diff options
Diffstat (limited to 'third_party/resample/sndlib-20/headers.c')
| -rw-r--r-- | third_party/resample/sndlib-20/headers.c | 5797 |
1 files changed, 5797 insertions, 0 deletions
diff --git a/third_party/resample/sndlib-20/headers.c b/third_party/resample/sndlib-20/headers.c new file mode 100644 index 00000000..676066a4 --- /dev/null +++ b/third_party/resample/sndlib-20/headers.c @@ -0,0 +1,5797 @@ +/* readers/writers for various sound file headers + * + * -------------------------------- + * int mus_header_read (const char *name) + * int mus_header_write (const char *name, int type, int in_srate, int in_chans, off_t loc, off_t size_in_samples, int format, const char *comment, int len) + * int mus_header_initialize (void) + * + * Once mus_header_read has been called, the data in it can be accessed through: + * + * off_t mus_header_samples (void) samples + * off_t mus_header_data_location (void) location of data (bytes) + * int mus_header_chans (void) channels + * int mus_header_srate (void) srate + * int mus_header_type (void) header type (i.e. aiff, wave, etc) (see sndlib.h) + * int mus_header_format (void) data format (see sndlib.h) + * off_t mus_header_comment_start (void) comment start location (if any) (bytes) + * off_t mus_header_comment_end (void) comment end location + * off_t mus_header_aux_comment_start (int n) if multiple comments, nth start location + * off_t mus_header_aux_comment_end (int n) if multiple comments, nth end location + * int mus_header_type_specifier (void) original (header-specific) type ID + * int mus_header_bits_per_sample (void) sample width in bits + * off_t mus_header_true_length (void) true (lseek) file length + * int mus_bytes_per_sample (int format) sample width in bytes + * bool mus_header_writable(int type, int format) can we write this header + * -------------------------------- + * + * "Linear" below means 2's complement integer. + * + * Currently supported read/write (in standard data formats): + * NeXT/Sun/DEC/AFsp + * AIFF/AIFC + * RIFF (microsoft wave) + * IRCAM (old style) + * NIST-sphere + * no header + * + * Currently supported read-only (in selected data formats): + * 8SVX (IFF), EBICSF, INRS, ESPS, SPPACK, ADC (OGI), AVR, VOC, CSL, snack "SMP", PVF, + * Sound Tools, Turtle Beach SMP, SoundFont 2.0, Sound Designer I, PSION alaw, MAUD, + * Gravis Ultrasound, Comdisco SPW, Goldwave sample, OMF, NVF, + * Sonic Foundry, SBStudio II, Delusion digital, Digiplayer ST3, Farandole Composer WaveSample, + * Ultratracker WaveSample, Sample Dump exchange, Yamaha SY85 and SY99 (buggy), Yamaha TX16W, + * Covox v8, AVI, Kurzweil 2000, Paris Ensoniq, Impulse tracker, Korg, Akai type 4, Maui, + * + * for a few of these I'm still trying to get documentation -- best sources of info + * are ftp.cwi.nl:pub/audio (info files), the AFsp sources, and the SOX sources. + * sox and gsm are at ftp.cwi.nl, AFsp is from kabal@Polaris.EE.McGill.CA (Peter Kabal) as + * ftp.TSP.EE.McGill.CA:/pub/AFsp/AFsp-V3R2.tar.Z. The Sound Designer formats are described + * in the "Developer Documentation" from Digidesign. Other useful sources can be found at + * ftp.x.org:/contrib/audio/nas, svr-ftp.eng.cam.ac.uk:/comp.speech/tools, and + * at http://www.wotsit.org. I put many of my test cases in + * ccrma-ftp.stanford.edu:/pub/Lisp/sf.tar.gz. The RIFF format is described in the + * Microsoft Multimedia Programmer's Reference Manual at ftp.microsoft.com:/SoftLib/MSLFILES/MDRK.EXE. + * AVI format is described in http://www.rahul.net/jfm/avi.html. + * + * For a lot of info and examples see http://www.TSP.ECE.McGill.CA/MMSP/Documents/AudioFormats/index.html + * + * The main problem with compressed sound files is that you can't do reliable + * random access to the data, can't easily read backwards, and most of the compression + * schemes are proprietary (and appalling), but to translate Mus10/Sam, HCOM, IEEE text, + * MIDI sample dumps, various adpcm cases, NIST shortpack files, and AVI see snd-trans.c + * in the sound editor (snd-8.tar.gz). + * + * If anyone has information on any other header or data formats, I would be most interested in it, + * but only if it can be included in this file. + * + * ivc format appears to have 16 bytes of header (-1 5 0 0 0 0 -> mulaw) followed by mulaw or alaw data + */ + +#include <mus-config.h> + +#if USE_SND + #include "snd.h" +#else + #if HAVE_RUBY && (!CLM) + #include "xen.h" + #endif +#endif + +#include <math.h> +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#if HAVE_STRING_H + #include <string.h> +#endif +#if (defined(HAVE_LIBC_H) && (!defined(HAVE_UNISTD_H))) + #include <libc.h> +#else + #if (!(defined(_MSC_VER))) + #include <unistd.h> + #endif +#endif + +#include "_sndlib.h" +#include "sndlib-strings.h" + +static bool hdrbuf_is_inited = false; + +#define HDRBUFSIZ 256 +static unsigned char *hdrbuf; +#define INITIAL_READ_SIZE 32 + +/* AIFF files can have any number of ANNO chunks, so we'll grab at least 4 of them */ +#define AUX_COMMENTS 4 +static off_t *aux_comment_start = NULL, *aux_comment_end = NULL; + +#define LOOPS 2 +static int *loop_modes = NULL, *loop_starts = NULL, *loop_ends = NULL; +static int markers = 0; +static int *marker_ids = NULL, *marker_positions = NULL; + +/* for CLM */ +void mus_reset_headers_c(void) +{ + hdrbuf_is_inited = false; + markers = 0; +} + +int mus_header_initialize(void) +{ + if (!hdrbuf_is_inited) + { + hdrbuf_is_inited = true; + hdrbuf = (unsigned char *)CALLOC(HDRBUFSIZ, sizeof(unsigned char)); + aux_comment_start = (off_t *)CALLOC(AUX_COMMENTS, sizeof(off_t)); + aux_comment_end = (off_t *)CALLOC(AUX_COMMENTS, sizeof(off_t)); + loop_modes = (int *)CALLOC(LOOPS, sizeof(int)); + loop_starts = (int *)CALLOC(LOOPS, sizeof(int)); + loop_ends = (int *)CALLOC(LOOPS, sizeof(int)); + if ((hdrbuf == NULL) || (aux_comment_start == NULL) || (aux_comment_end == NULL) || + (loop_modes == NULL) || (loop_starts == NULL) || (loop_ends == NULL)) + return(mus_error(MUS_MEMORY_ALLOCATION_FAILED, "mus_header_initialize: buffer allocation failed")); + } + return(MUS_NO_ERROR); +} + + +static const unsigned char I_DSND[4] = {'.','s','n','d'}; /* NeXT/Sun/Dec/SGI/AFsp first word */ +static const unsigned char I_FORM[4] = {'F','O','R','M'}; /* AIFF first word */ +static const unsigned char I_AIFF[4] = {'A','I','F','F'}; /* AIFF second word */ +static const unsigned char I_AIFC[4] = {'A','I','F','C'}; /* ditto but might be compressed data */ +static const unsigned char I_COMM[4] = {'C','O','M','M'}; +static const unsigned char I_COMT[4] = {'C','O','M','T'}; +static const unsigned char I_INFO[4] = {'I','N','F','O'}; +static const unsigned char I_INST[4] = {'I','N','S','T'}; +static const unsigned char I_inst[4] = {'i','n','s','t'}; /* RIFF wants lower case, just to be different */ +static const unsigned char I_MARK[4] = {'M','A','R','K'}; +static const unsigned char I_SSND[4] = {'S','S','N','D'}; +static const unsigned char I_FVER[4] = {'F','V','E','R'}; +static const unsigned char I_NONE[4] = {'N','O','N','E'}; +static const unsigned char I_ULAW[4] = {'U','L','A','W'}; /* AIFC compression types that we can handle */ +static const unsigned char I_ulaw[4] = {'u','l','a','w'}; /* or maybe it's lowercase (Apple) ... */ +static const unsigned char I_ima4[4] = {'i','m','a','4'}; /* AIFC IMA adpcm apparently */ +static const unsigned char I_raw_[4] = {'r','a','w',' '}; /* AIFC offset binary OS 8.5 (others are 'MAC3' 'MAC6' 'cdx4' 'cdx2' 'str4') */ +static const unsigned char I_sowt[4] = {'s','o','w','t'}; /* AIFC 16-bit little endian -- used by Mac when extracting CD tracks */ +static const unsigned char I_in32[4] = {'i','n','3','2'}; /* AIFC */ +static const unsigned char I_in24[4] = {'i','n','2','4'}; /* AIFC */ +static const unsigned char I_ni23[4] = {'n','i','2','3'}; /* AIFC */ +static const unsigned char I_fl32[4] = {'f','l','3','2'}; /* AIFC 32-bit float */ +static const unsigned char I_FL32[4] = {'F','L','3','2'}; /* AIFC 32-bit float (apparently used by CSound and SoundHack) */ +static const unsigned char I_fl64[4] = {'f','l','6','4'}; /* AIFC 64-bit float */ +static const unsigned char I_twos[4] = {'t','w','o','s'}; /* AIFC big endian? */ +static const unsigned char I_ALAW[4] = {'A','L','A','W'}; +static const unsigned char I_alaw[4] = {'a','l','a','w'}; /* apple */ +static const unsigned char I_APPL[4] = {'A','P','P','L'}; +static const unsigned char I_MUS_[4] = {'C','L','M',' '}; /* I hereby claim this AIFF chunk name */ +static const unsigned char I_RIFF[4] = {'R','I','F','F'}; /* RIFF first word */ +static const unsigned char I_RIFX[4] = {'R','I','F','X'}; /* RIFX first word (big-endian RIFF file) */ +static const unsigned char I_WAVE[4] = {'W','A','V','E'}; +static const unsigned char I_fmt_[4] = {'f','m','t',' '}; +static const unsigned char I_data[4] = {'d','a','t','a'}; +static const unsigned char I_fact[4] = {'f','a','c','t'}; /* used by compressed RIFF files */ +static const unsigned char I_clm_[4] = {'c','l','m',' '}; +static const unsigned char I_NIST[4] = {'N','I','S','T'}; /* first word of NIST SPHERE files */ +static const unsigned char I_8SVX[4] = {'8','S','V','X'}; /* AIFF other choice */ +static const unsigned char I_16SV[4] = {'1','6','S','V'}; /* hmmm... 16-bit 8svx? */ +static const unsigned char I_VOC0[4] = {'C','r','e','a'}; /* Actual text is "Creative Voice File" */ +static const unsigned char I_VOC1[4] = {'t','i','v','e'}; +static const unsigned char I_SOUN[4] = {'S','O','U','N'}; /* Sound Tools first word="SOUND" -- not unique as SMP files start with "SOUND SAMPLE" */ +static const unsigned char I_D_SA[4] = {'D',' ','S','A'}; +static const unsigned char I_MPLE[4] = {'M','P','L','E'}; +static const unsigned char I_BODY[4] = {'B','O','D','Y'}; /* next 4 for 8svx chunk names */ +static const unsigned char I_VHDR[4] = {'V','H','D','R'}; +static const unsigned char I_CHAN[4] = {'C','H','A','N'}; +static const unsigned char I_ANNO[4] = {'A','N','N','O'}; +static const unsigned char I_NAME[4] = {'N','A','M','E'}; +static const unsigned char I_AVR_[4] = {'2','B','I','T'}; /* first word of AVR files */ +static const unsigned char I_HCOM[4] = {'H','C','O','M'}; +static const unsigned char I_FSSD[4] = {'F','S','S','D'}; +static const unsigned char I_SPIB[4] = {'%','/','/','\n'}; /* first word of IEEE spib text sound files */ +static const unsigned char I_S___[4] = {'%','-','-','-'}; /* first word of other IEEE spib text sound files */ +static const unsigned char I_ALaw[4] = {'A','L','a','w'}; /* first word of PSION alaw files */ +static const unsigned char I_Soun[4] = {'S','o','u','n'}; /* second */ +static const unsigned char I_MAUD[4] = {'M','A','U','D'}; /* MAUD specialization of AIFF */ +static const unsigned char I_MHDR[4] = {'M','H','D','R'}; +static const unsigned char I_MDAT[4] = {'M','D','A','T'}; +static const unsigned char I_mdat[4] = {'m','d','a','t'}; /* quicktime */ +static const unsigned char I_MThd[4] = {'M','T','h','d'}; /* sigh -- the M word */ +static const unsigned char I_DECN[4] = {'.','s','d','\0'}; /* first word of DEC files (?) */ +static const unsigned char I_sfbk[4] = {'s','f','b','k'}; /* SoundFont 2.0 */ +static const unsigned char I_sdta[4] = {'s','d','t','a'}; +static const unsigned char I_shdr[4] = {'s','h','d','r'}; +static const unsigned char I_pdta[4] = {'p','d','t','a'}; +static const unsigned char I_LIST[4] = {'L','I','S','T'}; +static const unsigned char I_GF1P[4] = {'G','F','1','P'}; /* first word of Gravis Ultrsound patch files */ +static const unsigned char I_ATCH[4] = {'A','T','C','H'}; /* second word */ +static const unsigned char I_DSIG[4] = {'$','S','I','G'}; /* first word of Comdisco SPW file */ +static const unsigned char I_NAL_[4] = {'N','A','L','_'}; /* second word */ +static const unsigned char I_GOLD[4] = {'G','O','L','D'}; /* first word Goldwave(?) sample file */ +static const unsigned char I__WAV[4] = {' ','S','A','M'}; /* second word */ +static const unsigned char I_SRFS[4] = {'S','R','F','S'}; /* first word Sonic Resource Foundry file(?) */ +static const unsigned char I_Diam[4] = {'D','i','a','m'}; /* first word DiamondWare file */ +static const unsigned char I_ondW[4] = {'o','n','d','W'}; /* second word */ +static const unsigned char I_CSRE[4] = {'C','S','R','E'}; /* adf first word -- second starts with "40" */ +static const unsigned char I_SND_[4] = {'S','N','D',' '}; /* SBStudio II */ +static const unsigned char I_SNIN[4] = {'S','N','I','N'}; +static const unsigned char I_SNNA[4] = {'S','N','N','A'}; +static const unsigned char I_SNDT[4] = {'S','N','D','T'}; +static const unsigned char I_DDSF[4] = {'D','D','S','F'}; /* Delusion Digital Sound File */ +static const unsigned char I_FSMt[4] = {'F','S','M',(unsigned char)'\376'}; /* Farandole Composer WaveSample */ +static const unsigned char I_SDXc[4] = {'S','D','X',':'}; /* Sample dump exchange format */ +static const unsigned char I_UWFD[4] = {'U','W','F','D'}; /* Ultratracker Wavesample */ +static const unsigned char I_LM89[4] = {'L','M','8','9'}; /* Yamaha TX-16 */ +static const unsigned char I_SY80[4] = {'S','Y','8','0'}; /* Yamaha SY-99 */ +static const unsigned char I_SY85[4] = {'S','Y','8','5'}; /* Yamaha SY-85 */ +static const unsigned char I_SCRS[4] = {'S','C','R','S'}; /* Digiplayer ST3 */ +static const unsigned char I_covox[4] = {(unsigned char)'\377','\125',(unsigned char)'\377',(unsigned char)'\252'}; +/* static const unsigned char I_DSPL[4] = {'D','S','P','L'}; */ /* Digitracker SPL (now obsolete) */ +static const unsigned char I_AVI_[4] = {'A','V','I',' '}; /* RIFF AVI */ +static const unsigned char I_strf[4] = {'s','t','r','f'}; +static const unsigned char I_movi[4] = {'m','o','v','i'}; +static const unsigned char I_PRAM[4] = {'P','R','A','M'}; /* Kurzweil 2000 */ +static const unsigned char I_ones[4] = {(unsigned char)'\377',(unsigned char)'\377',(unsigned char)'\377',(unsigned char)'\377'}; +static const unsigned char I_zeros[4] = {'\0','\0','\0','\0'}; +static const unsigned char I_asf0[4] = {(unsigned char)'\321','\051',(unsigned char)'\342',(unsigned char)'\326'}; +static const unsigned char I_asf1[4] = {(unsigned char)'\332','\065',(unsigned char)'\321','\021'}; +static const unsigned char I_asf2[4] = {(unsigned char)'\220','\064','\000',(unsigned char)'\240'}; +static const unsigned char I_asf3[4] = {(unsigned char)'\311','\003','\111',(unsigned char)'\276'}; +static const unsigned char I__PAF[4] = {' ','p','a','f'}; /* Paris Ensoniq */ +static const unsigned char I_FAP_[4] = {'f','a','p',' '}; /* Paris Ensoniq */ +static const unsigned char I_DS16[4] = {'D','S','1','6'}; /* CSL */ +static const unsigned char I_HEDR[4] = {'H','E','D','R'}; +static const unsigned char I_HDR8[4] = {'H','D','R','8'}; +static const unsigned char I_SDA_[4] = {'S','D','A','_'}; +static const unsigned char I_SDAB[4] = {'S','D','A','B'}; +static const unsigned char I_SD_B[4] = {'S','D','_','B'}; +static const unsigned char I_NOTE[4] = {'N','O','T','E'}; +static const unsigned char I_file[4] = {'f','i','l','e'}; /* snack "SMP" */ +static const unsigned char I__sam[4] = {'=','s','a','m'}; +static const unsigned char I_SU7M[4] = {'S','U','7','M'}; +static const unsigned char I_SU7R[4] = {'S','U','7','R'}; +static const unsigned char I_PVF1[4] = {'P','V','F','1'}; /* portable voice format (mgetty) */ +static const unsigned char I_PVF2[4] = {'P','V','F','2'}; +static const unsigned char I_AUTH[4] = {'A','U','T','H'}; +static const unsigned char I_riff[4] = {'r','i','f','f'}; /* SoundForge */ +static const unsigned char I_TWIN[4] = {'T','W','I','N'}; /* TwinVQ */ +static const unsigned char I_IMPS[4] = {'I','M','P','S'}; /* Impulse Tracker */ +static const unsigned char I_SMP1[4] = {'S','M','P','1'}; /* Korg */ +static const unsigned char I_Maui[4] = {'M','a','u','i'}; /* Turtle Beach */ +static const unsigned char I_SDIF[4] = {'S','D','I','F'}; /* IRCAM sdif */ +static const unsigned char I_NVF_[4] = {'N','V','F',' '}; /* Nomad II Creative NVF */ +static const unsigned char I_VFMT[4] = {'V','F','M','T'}; /* Nomad II Creative NVF */ +static const unsigned char I_OggS[4] = {'O','g','g','S'}; /* Ogg-related files, apparently -- ogg123 has "vorbis" instead of "Speex" */ +static const unsigned char I_fLaC[4] = {'f','L','a','C'}; /* FLAC */ +static const unsigned char I_ajkg[4] = {'a','j','k','g'}; /* shorten */ +static const unsigned char I_TTA1[4] = {'T','T','A','1'}; /* ttaenc */ +static const unsigned char I_wvpk[4] = {'w','v','p','k'}; /* wavpack */ + +#define I_IRCAM_VAX 0x0001a364 +#define I_IRCAM_SUN 0x0002a364 +#define I_IRCAM_MIPS 0x0003a364 +#define I_IRCAM_NEXT 0x0004a364 + +#define NINRS 7 +static const unsigned int I_INRS[NINRS] = {0xcb460020, 0xd0465555, 0xfa460000, 0x1c470040, 0x3b470080, 0x7a470000, 0x9c470040}; + +static off_t data_location = 0; +static int srate = 0, chans = 0, header_type = MUS_UNSUPPORTED, data_format = MUS_UNKNOWN, original_data_format = 0; +static int type_specifier = 0, bits_per_sample = 0, block_align = 0, fact_samples = 0; +static off_t comment_start = 0, comment_end = 0; +static off_t true_file_length = 0, data_size = 0; +static int base_detune = 0, base_note = 0; +static bool little_endian = false; + +off_t mus_header_samples(void) {return(data_size);} +off_t mus_header_data_location(void) {return(data_location);} +int mus_header_chans(void) {return(chans);} +int mus_header_srate(void) {return(srate);} +int mus_header_type(void) {return(header_type);} +int mus_header_format(void) {return(data_format);} +off_t mus_header_comment_start(void) {return(comment_start);} +off_t mus_header_comment_end(void) {return(comment_end);} +off_t mus_header_aux_comment_start(int n) {if (aux_comment_start) return(aux_comment_start[n]); else return(-1);} +off_t mus_header_aux_comment_end(int n) {if (aux_comment_end) return(aux_comment_end[n]); else return(-1);} +int mus_header_type_specifier(void) {return(type_specifier);} +int mus_header_bits_per_sample(void) {return(bits_per_sample);} +int mus_header_fact_samples(void) {return(fact_samples);} +int mus_header_block_align(void) {return(block_align);} +off_t mus_header_true_length(void) {return(true_file_length);} +int mus_header_original_format(void) {return(original_data_format);} +int mus_header_loop_mode(int which) {if (loop_modes) return(loop_modes[which]); else return(-1);} +int mus_header_loop_start(int which) {if (loop_starts) return(loop_starts[which]); else return(-1);} +int mus_header_loop_end(int which) {if (loop_ends) return(loop_ends[which]); else return(-1);} +int mus_header_mark_position(int id) {int i; for (i = 0; i < markers; i++) {if (marker_ids[i] == id) return(marker_positions[i]);} return(-1);} +int mus_header_base_detune(void) {return(base_detune);} +int mus_header_base_note(void) {return(base_note);} + +int mus_bytes_per_sample(int format) +{ + switch (format) + { + case MUS_BYTE: return(1); break; + case MUS_BSHORT: return(2); break; + case MUS_UBYTE: return(1); break; + case MUS_MULAW: return(1); break; + case MUS_ALAW: return(1); break; + case MUS_BINT: return(4); break; + case MUS_BFLOAT: return(4); break; + case MUS_BFLOAT_UNSCALED: return(4); break; + case MUS_B24INT: return(3); break; + case MUS_BDOUBLE: return(8); break; + case MUS_BDOUBLE_UNSCALED: return(8); break; + case MUS_LSHORT: return(2); break; + case MUS_LINT: return(4); break; + case MUS_LFLOAT: return(4); break; + case MUS_LDOUBLE: return(8); break; + case MUS_LFLOAT_UNSCALED: return(4); break; + case MUS_LDOUBLE_UNSCALED: return(8); break; + case MUS_L24INT: return(3); break; + case MUS_UBSHORT: return(2); break; + case MUS_ULSHORT: return(2); break; + case MUS_BINTN: return(4); break; + case MUS_LINTN: return(4); break; + default: return(1); break; /* we divide by this number, so 0 is not safe */ + } +} + +off_t mus_samples_to_bytes (int format, off_t size) {return(size * (mus_bytes_per_sample(format)));} +off_t mus_bytes_to_samples (int format, off_t size) {return((off_t)(size / (mus_bytes_per_sample(format))));} + + +static bool equal_big_or_little_endian(const unsigned char *n1, const unsigned int n2) +{ + return((mus_char_to_ubint(n1) == n2) || (mus_char_to_ulint(n1) == n2)); +} + +static short big_or_little_endian_short(const unsigned char *n, bool little) +{ + if (little) return(mus_char_to_lshort(n)); + return(mus_char_to_bshort(n)); +} + +static int big_or_little_endian_int(const unsigned char *n, bool little) +{ + if (little) return(mus_char_to_lint(n)); + return(mus_char_to_bint(n)); +} + +static unsigned int big_or_little_endian_uint(const unsigned char *n, bool little) +{ + if (little) return(mus_char_to_ulint(n)); + return(mus_char_to_ubint(n)); +} + +static float big_or_little_endian_float(const unsigned char *n, bool little) +{ + if (little) return(mus_char_to_lfloat(n)); + return(mus_char_to_bfloat(n)); +} + +static bool match_four_chars(const unsigned char *head, const unsigned char *match) +{ + return((head[0] == match[0]) && + (head[1] == match[1]) && + (head[2] == match[2]) && + (head[3] == match[3])); +} + +static void write_four_chars(unsigned char *head, const unsigned char *match) +{ + head[0] = match[0]; + head[1] = match[1]; + head[2] = match[2]; + head[3] = match[3]; +} + +const char *mus_header_type_name(int type) +{ + switch (type) + { + case MUS_NEXT: return("Sun/Next"); break; + case MUS_AIFC: return("AIFC"); break; + case MUS_RIFF: return("RIFF"); break; + case MUS_BICSF: return("BICSF"); break; + case MUS_NIST: return("NIST"); break; + case MUS_INRS: return("INRS"); break; + case MUS_ESPS: return("ESPS"); break; + case MUS_SVX: return("SVX8"); break; + case MUS_VOC: return("VOC"); break; + case MUS_SNDT: return("SNDT"); break; + case MUS_RAW: return("raw (no header)"); break; + case MUS_SMP: return("SMP"); break; + case MUS_AVR: return("AVR"); break; + case MUS_IRCAM: return("IRCAM"); break; + case MUS_SD1: return("Sound Designer 1"); break; + case MUS_SPPACK: return("SPPACK"); break; + case MUS_MUS10: return("Mus10"); break; + case MUS_HCOM: return("HCOM"); break; + case MUS_PSION: return("PSION"); break; + case MUS_MAUD: return("MAUD"); break; + case MUS_IEEE: return("IEEE text"); break; + case MUS_MATLAB: return("Matlab"); break; + case MUS_ADC: return("ADC/OGI"); break; + case MUS_MIDI: return("MIDI"); break; + case MUS_SOUNDFONT: return("SoundFont"); break; + case MUS_GRAVIS: return("Gravis Ultrasound patch"); break; + case MUS_COMDISCO: return("Comdisco SPW signal"); break; + case MUS_GOLDWAVE: return("Goldwave sample"); break; + case MUS_SRFS: return("SRFS"); break; + case MUS_MIDI_SAMPLE_DUMP: return("MIDI sample dump"); break; + case MUS_DIAMONDWARE: return("DiamondWare"); break; + case MUS_ADF: return("CSRE adf"); break; + case MUS_SBSTUDIOII: return("SBStudioII"); break; + case MUS_DELUSION: return("Delusion"); break; + case MUS_FARANDOLE: return("Farandole"); break; + case MUS_SAMPLE_DUMP: return("Sample dump"); break; + case MUS_ULTRATRACKER: return("Ultratracker"); break; + case MUS_YAMAHA_TX16W: return("TX-16W"); break; + case MUS_YAMAHA_SY85: return("Sy-85"); break; + case MUS_YAMAHA_SY99: return("Sy-99"); break; + case MUS_KURZWEIL_2000: return("Kurzweil 2000"); break; + case MUS_KORG: return("Korg"); break; + case MUS_MAUI: return("Turtle Beach"); break; + case MUS_IMPULSETRACKER: return("Impulse Tracker"); break; + case MUS_AKAI4: return("AKAI 4"); break; + case MUS_DIGIPLAYER: return("Digiplayer ST3"); break; + case MUS_COVOX: return("Covox V8"); break; + case MUS_AVI: return("AVI"); break; + case MUS_OMF: return("OMF"); break; + case MUS_QUICKTIME: return("Quicktime"); break; + case MUS_ASF: return("asf"); break; + case MUS_AIFF: return("AIFF"); break; + case MUS_PAF: return("Ensoniq Paris"); break; + case MUS_CSL: return("CSL"); break; + case MUS_FILE_SAMP: return("snack SMP"); break; + case MUS_PVF: return("Portable Voice Format"); break; + case MUS_SOUNDFORGE: return("SoundForge"); break; + case MUS_TWINVQ: return("TwinVQ"); break; + case MUS_SDIF: return("IRCAM sdif"); break; + case MUS_NVF: return("Creative NVF"); break; + case MUS_OGG: return("Ogg Vorbis"); break; + case MUS_FLAC: return("Flac"); break; + case MUS_SPEEX: return("Speex"); break; + case MUS_MPEG: return("mpeg"); break; + case MUS_SHORTEN: return("shorten"); break; + case MUS_TTA: return("tta"); break; + case MUS_WAVPACK: return("wavpack"); break; + default: return("unsupported"); break; + } +} + +const char *mus_data_format_name(int format) +{ + switch (format) + { + case MUS_BSHORT: return("big endian short (16 bits)"); break; + case MUS_MULAW: return("mulaw (8 bits)"); break; + case MUS_BYTE: return("signed byte (8 bits)"); break; + case MUS_BFLOAT: return("big endian float (32 bits)"); break; + case MUS_BFLOAT_UNSCALED: return("big endian float (32 bits, unscaled)"); break; + case MUS_BINT: return("big endian int (32 bits)"); break; + case MUS_ALAW: return("alaw (8 bits)"); break; + case MUS_UBYTE: return("unsigned byte (8 bits)"); break; + case MUS_B24INT: return("big endian int (24 bits)"); break; + case MUS_BDOUBLE: return("big endian double (64 bits)"); break; + case MUS_BDOUBLE_UNSCALED: return("big endian double (64 bits, unscaled)"); break; + case MUS_LSHORT: return("little endian short (16 bits)"); break; + case MUS_LINT: return("little endian int (32 bits)"); break; + case MUS_LFLOAT: return("little endian float (32 bits)"); break; + case MUS_LDOUBLE: return("little endian double (64 bits)"); break; + case MUS_LFLOAT_UNSCALED: return("little endian float (32 bits, unscaled)"); break; + case MUS_LDOUBLE_UNSCALED: return("little endian double (64 bits, unscaled)"); break; + case MUS_UBSHORT: return("unsigned big endian short (16 bits)"); break; + case MUS_ULSHORT: return("unsigned little endian short (16 bits)"); break; + case MUS_L24INT: return("little endian int (24 bits)"); break; + case MUS_BINTN: return("normalized big endian int (32 bits)"); break; + case MUS_LINTN: return("normalized little endian int (32 bits)"); break; + default: return("unknown"); break; + } +} + +const char *mus_data_format_short_name(int format) +{ + switch (format) + { + case MUS_BSHORT: return("short int"); break; + case MUS_MULAW: return("mulaw"); break; + case MUS_BYTE: return("signed byte"); break; + case MUS_BFLOAT: return("float"); break; + case MUS_BFLOAT_UNSCALED: return("float unscaled)"); break; + case MUS_BINT: return("int"); break; + case MUS_ALAW: return("alaw"); break; + case MUS_UBYTE: return("unsigned byte"); break; + case MUS_B24INT: return("24-bit int"); break; + case MUS_BDOUBLE: return("double"); break; + case MUS_BDOUBLE_UNSCALED: return("double unscaled"); break; + case MUS_LSHORT: return("short int"); break; + case MUS_LINT: return("int"); break; + case MUS_LFLOAT: return("float"); break; + case MUS_LDOUBLE: return("double"); break; + case MUS_LFLOAT_UNSCALED: return("float unscaled"); break; + case MUS_LDOUBLE_UNSCALED: return("double unscaled"); break; + case MUS_UBSHORT: return("unsigned short"); break; + case MUS_ULSHORT: return("unsigned short"); break; + case MUS_L24INT: return("24-bit int"); break; + case MUS_BINTN: return("normalized int"); break; + case MUS_LINTN: return("normalized int"); break; + default: return("unknown"); break; + } +} + +#if HAVE_RUBY + #define TO_LANG(Str) strdup(xen_scheme_constant_to_ruby(Str)) +#else + #define TO_LANG(Str) Str +#endif + +char *mus_header_type_to_string(int type) +{ + switch (type) + { + case MUS_NEXT: return(TO_LANG(S_mus_next)); + case MUS_AIFF: return(TO_LANG(S_mus_aiff)); + case MUS_AIFC: return(TO_LANG(S_mus_aifc)); + case MUS_RIFF: return(TO_LANG(S_mus_riff)); + case MUS_NIST: return(TO_LANG(S_mus_nist)); + case MUS_IRCAM: return(TO_LANG(S_mus_ircam)); + case MUS_RAW: return(TO_LANG(S_mus_raw)); + case MUS_BICSF: return(TO_LANG(S_mus_bicsf)); + case MUS_VOC: return(TO_LANG(S_mus_voc)); + case MUS_SVX: return(TO_LANG(S_mus_svx)); + case MUS_SOUNDFONT: return(TO_LANG(S_mus_soundfont)); + } + return(NULL); +} + +char *mus_data_format_to_string(int format) +{ + switch (format) + { + case MUS_BSHORT: return(TO_LANG(S_mus_bshort)); + case MUS_LSHORT: return(TO_LANG(S_mus_lshort)); + case MUS_MULAW: return(TO_LANG(S_mus_mulaw)); + case MUS_ALAW: return(TO_LANG(S_mus_alaw)); + case MUS_BYTE: return(TO_LANG(S_mus_byte)); + case MUS_UBYTE: return(TO_LANG(S_mus_ubyte)); + case MUS_BFLOAT: return(TO_LANG(S_mus_bfloat)); + case MUS_LFLOAT: return(TO_LANG(S_mus_lfloat)); + case MUS_BINT: return(TO_LANG(S_mus_bint)); + case MUS_LINT: return(TO_LANG(S_mus_lint)); + case MUS_BINTN: return(TO_LANG(S_mus_bintn)); + case MUS_LINTN: return(TO_LANG(S_mus_lintn)); + case MUS_B24INT: return(TO_LANG(S_mus_b24int)); + case MUS_L24INT: return(TO_LANG(S_mus_l24int)); + case MUS_BDOUBLE: return(TO_LANG(S_mus_bdouble)); + case MUS_LDOUBLE: return(TO_LANG(S_mus_ldouble)); + case MUS_UBSHORT: return(TO_LANG(S_mus_ubshort)); + case MUS_ULSHORT: return(TO_LANG(S_mus_ulshort)); + case MUS_BDOUBLE_UNSCALED: return(TO_LANG(S_mus_bdouble_unscaled)); + case MUS_LDOUBLE_UNSCALED: return(TO_LANG(S_mus_ldouble_unscaled)); + case MUS_BFLOAT_UNSCALED: return(TO_LANG(S_mus_bfloat_unscaled)); + case MUS_LFLOAT_UNSCALED: return(TO_LANG(S_mus_lfloat_unscaled)); + } + return(NULL); +} + +static const char *any_data_format_name(int sndlib_format) +{ + if (MUS_DATA_FORMAT_OK(sndlib_format)) + return(mus_data_format_name(sndlib_format)); + else return(mus_header_original_format_name(mus_header_original_format(), + mus_header_type())); +} + +#define SEEK_FILE_LENGTH(File) lseek(File, 0L, SEEK_END) +static int read_bicsf_header(const char *filename, int chan); + + +/* ------------------------------------ NeXT (or Sun) -------------------------------- + * + * 0: ".snd" + * 4: data_location (bytes) (not necessarily word aligned on Sun) + * 8: data_size (bytes) -- sometimes incorrect ("advisory") + * 12: data format indicator -- see below + * 16: srate (int) + * 20: chans + * 24: comment start + * + * in an AFsp file, the first 4 bytes of the comment are "AFsp", + * for bicsf, the integer at 28 is 107364 or 107415 + * + * on NeXTStep, always big-endian. ".snd"==0x2e736e64 on big-endian machines. + * + * formats are: + * 0 unspecified, 1 mulaw_8, 2 linear_8, 3 linear_16, 4 linear_24, 5 linear_32, 6 float, + * 7 double, 8 indirect, 9 nested, 10 dsp_core, 11 dsp_data_8, 12 dsp_data_16, 13 dsp_data_24, + * 14 dsp_data_32, 16 display, 17 mulaw_squelch, 18 emphasized, 19 compressed, 20 compressed_emphasized + * 21 dsp_commands, 22 dsp_commands_samples, 23 adpcm_g721, 24 adpcm_g722, 25 adpcm_g723, + * 26 adpcm_g723_5, 27 alaw_8, 28 aes, 29 delat_mulaw_8 + * internal Snd(lib)-only formats: + * 30: mus_lint, 31: mus_lfloat, + * 32: mus_bintn, 33: mus_lintn, + * 34: mus_ldouble and others... (added by me for Snd internal use) + */ + +/* according to the file /usr/share/magic, the DECN versions were little endian */ + +static int read_next_header(const char *filename, int chan) +{ + int maybe_bicsf, err = MUS_NO_ERROR, i; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); + data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + if (data_location < 24) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data location: " OFF_TD "?", filename, data_location)); + data_size = mus_char_to_bint((unsigned char *)(hdrbuf + 8)); + /* can be bogus -- fixup if possible */ + true_file_length = SEEK_FILE_LENGTH(chan); + if ((data_size <= 24) || (data_size > true_file_length)) + data_size = (true_file_length - data_location); + else + { + if (true_file_length > (off_t)(1 << 31)) + data_size = true_file_length - data_location; /* assume size field overflowed 32 bits */ + } + original_data_format = mus_char_to_bint((unsigned char *)(hdrbuf + 12)); + switch (original_data_format) + { + case 1: data_format = MUS_MULAW; break; + case 2: data_format = MUS_BYTE; break; /* some sound files assume MUS_UBYTE here! (NAS from 1994 X11R6 contrib) */ + case 3: data_format = MUS_BSHORT; break; + case 4: data_format = MUS_B24INT; break; + case 5: data_format = MUS_BINT; break; + case 6: data_format = MUS_BFLOAT; break; + case 7: data_format = MUS_BDOUBLE; break; + case 18: data_format = MUS_BSHORT; break; /* "emphasized": Xavier Serra's de-emphasis filter: y(n) = x(n) + .9 y(n-1) */ + case 27: data_format = MUS_ALAW; break; + case 30: data_format = MUS_LINT; break; /* from here on, for Snd's internal benefit -- these are probably not used elsewhere */ + case 31: data_format = MUS_LFLOAT; break; + case 32: data_format = MUS_BINTN; break; + case 33: data_format = MUS_LINTN; break; + case 34: data_format = MUS_LDOUBLE; break; + case 35: data_format = MUS_ULSHORT; break; + case 36: data_format = MUS_UBSHORT; break; + case 37: data_format = MUS_LFLOAT_UNSCALED; break; + case 38: data_format = MUS_BFLOAT_UNSCALED; break; + case 39: data_format = MUS_LDOUBLE_UNSCALED; break; + case 40: data_format = MUS_BDOUBLE_UNSCALED; break; + case 41: data_format = MUS_LSHORT; break; + case 42: data_format = MUS_L24INT; break; + case 43: data_format = MUS_UBYTE; break; + default: data_format = MUS_UNKNOWN; break; + } + srate = mus_char_to_bint((unsigned char *)(hdrbuf + 16)); + chans = mus_char_to_bint((unsigned char *)(hdrbuf + 20)); + comment_start = 0; + comment_end = 0; + for (i = 24; i < data_location - 1; i++) + if (hdrbuf[i] == '\0') + break; + else + { + if (hdrbuf[i] != ' ') + { + comment_start = i; + comment_end = data_location - 1; + break; + } + } + if (comment_end < comment_start) comment_end = comment_start; + maybe_bicsf = mus_char_to_bint((unsigned char *)(hdrbuf + 28)); + if (maybe_bicsf == 107364) err = read_bicsf_header(filename, chan); + data_size = mus_bytes_to_samples(data_format, data_size); + return(err); +} + +static int sndlib_format_to_next(int format) +{ + switch (format) + { + case MUS_MULAW: return(1); break; + case MUS_BYTE: return(2); break; + case MUS_BSHORT: return(3); break; + case MUS_B24INT: return(4); break; + case MUS_BINT: return(5); break; + case MUS_BFLOAT: return(6); break; + case MUS_BDOUBLE: return(7); break; + case MUS_ALAW: return(27); break; + case MUS_LINT: return(30); break; /* see above */ + case MUS_LFLOAT: return(31); break; + case MUS_BINTN: return(32); break; + case MUS_LINTN: return(33); break; + case MUS_LDOUBLE: return(34); break; + case MUS_ULSHORT: return(35); break; + case MUS_UBSHORT: return(36); break; + case MUS_LFLOAT_UNSCALED: return(37); break; + case MUS_BFLOAT_UNSCALED: return(38); break; + case MUS_LDOUBLE_UNSCALED: return(39); break; + case MUS_BDOUBLE_UNSCALED: return(40); break; + case MUS_LSHORT: return(41); break; + case MUS_L24INT: return(42); break; + case MUS_UBYTE: return(43); break; + default: + return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "Next header: can't write data format: %d (%s)", + format, + any_data_format_name(format))); + break; + } +} + +#if MUS_DEBUGGING + #define CHK_WRITE(Fd, Buf, Len) \ + do { size_t bytes = 0; \ + if (((Len) > 0) && ((bytes = write(Fd, Buf, Len)) == 0)) \ + fprintf(stderr, "%s[%d]: header write error (wrote: %d != requested: %d)", c__FUNCTION__, __LINE__, (int)bytes, (int)(Len)); \ + } while (0) + #define CHK_READ(Fd, Buf, Len) \ + do { size_t bytes = 0; \ + if (((Len) > 0) && ((bytes = read(Fd, Buf, (Len))) == 0)) \ + fprintf(stderr, "%s[%d]: header read error (read %d != requested %d)", c__FUNCTION__, __LINE__, (int)bytes, (int)(Len)); \ + } while (0) +#else + #define CHK_WRITE(Fd, Buf, Len) do {if (((Len) > 0) && (write(Fd, Buf, Len) == 0)) fprintf(stderr, "header write error");} while (0) + #define CHK_READ(Fd, Buf, Len) do {if (((Len) > 0) && (read(Fd, Buf, Len) == 0)) fprintf(stderr, "header read error");} while (0) +#endif + +static void write_next_comment(int fd, const char *comment, int len, int loc) +{ + if (len > 0) + CHK_WRITE(fd, (unsigned char *)comment, len); + len = loc - (len + 24); + if (len > 0) + { + unsigned char *combuf; + combuf = (unsigned char *)CALLOC(len, sizeof(char)); + CHK_WRITE(fd, combuf, len); + FREE(combuf); + } +} + +int mus_header_write_next_header(int chan, int wsrate, int wchans, int loc, int siz, int format, const char *comment, int len) +{ + int i, j; + write_four_chars((unsigned char *)hdrbuf, I_DSND); /* ".snd" */ + i = len / 4; + j = 24 + (4 * (i + 1)); + if (loc < j) loc = j; + mus_bint_to_char((unsigned char *)(hdrbuf + 4), loc); + mus_bint_to_char((unsigned char *)(hdrbuf + 8), siz); + mus_bint_to_char((unsigned char *)(hdrbuf + 12), sndlib_format_to_next(format)); + mus_bint_to_char((unsigned char *)(hdrbuf + 16), wsrate); + mus_bint_to_char((unsigned char *)(hdrbuf + 20), wchans); + CHK_WRITE(chan, hdrbuf, 24); + write_next_comment(chan, comment, len, loc); + data_location = loc; + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ AIFF ------------------------------------ + * + * 0: "FORM" + * 4: size (bytes) + * 8: "AIFF" or "AIFC" -- the latter includes compressed formats (list extended for 8.5 Sound.h) + * + * Thereafter the file is organized into "chunks", each chunk being + * a 4-byte identifer followed by an int (4-bytes) giving the chunk size + * not including the 8-byte header. AIFF data is signed. If the chunk + * size is odd, an extra (unaccounted-for) null byte is added at the end. + * + * The chunks we want are "COMM", "SSND", and "APPL". + * + * COMM: 0: chans + * 2: frames + * 6: bits per sample + * 8: srate as 80-bit IEEE float + * then if AIFC (not AIFF), 4 bytes giving compression id ("NONE"=not compressed) + * followed by Pascal string giving long name of compression type + * + * SSND: 0: data location (offset within SSND chunk) + * + * Other chunks include: ANNO: a comment, INST: loop control, MARK: marker, MIDI: midi, + * COMT: comment (max 65536 chars), NAME: sound name, AUTH: author's name + * (c), AESD: recording data, APPL: application specific stuff + * "MARK" size short-#marks {marks} -- latter are short-ID long-position pstring-name. + * "INST" size chars[baseNote detune lowNote highNote lowVelocity HighVelocity] short-gain loops[sustain release] + * loop: short-playMode marker-begin marker-end (signed?) shorts) + * playMode: 0 no loop, 1 forward loop, 2 forward/backward loop + * chars are MIDI data (detune is in cents) + * "MIDI" size MIDI-data... + * "AESD" size AES Channel Status Data (24 bytes as specified by AES) + * see "AES: Guidelines for the use of the AES3 interface" + * byte 0: bit 0: 0 = consumer, 1 = pro + * bit 1: 0 = audio, 1 = non-audio + * bits 2:4: emphasis: 0:none, 4:none, 6:CD, 7:CCITT J17 + * bits 6:7: srate: 00 = 48KHz, 01 = 48, 10 = 44.1, 11 = 32 + * byte 1: bits 0:3: chans: 2:mono, else stereo + * byte 2 for word size stuff (always ends up 16-bit): bits 3-5 = sample length where 4 = 16-bit + * byte 3: multi-channels modes, 4: AES sync ref, 5:unused, 6-9:ASCII source ID, 10-13:ASCII destination ID + * byte 14-17:local sample addr, 18-21:time of day addr, then CRC checks + * "APPL" size signature data + * "COMT" size short-#comments {comments} -- the latter are long-time marker short-text-length char-text + * time is in seconds since 1-Jan-1904 + * "NAME"/"AUTH"/"(c) "/"ANNO" size char-name + * "FVER" size(4) AIFC-format-version -- currently always 0xA2805140 + * "SAXL" -- a desperate kludge to get around Apple's own compression schemes! + * + * always big-endian + * There was also (briefly) an AIFS file, now deprecated. + */ + +/* ieee-80 conversions -- design by committee! */ +/* this code taken from CSound sources -- apparently originally written by Malcolm Slaney at Apple */ + +#define ULPOW2TO31 ((unsigned int)0x80000000) +#define DPOW2TO31 ((double)2147483648.0) /* 2^31 */ + +static double myUlongToDouble(unsigned int ul) +{ + double val; + if(ul & ULPOW2TO31) val = DPOW2TO31 + (ul & (~ULPOW2TO31)); + else val = ul; + return val; +} + +static unsigned int myDoubleToUlong(double val) +{ + unsigned int ul; + if(val < DPOW2TO31) ul = (unsigned int)val; + else ul = ULPOW2TO31 | (unsigned int)(val-DPOW2TO31); + return ul; +} + +static double ieee_80_to_double(unsigned char *p) +{ + unsigned char sign; + short lexp = 0; + unsigned int mant1 = 0; + unsigned int mant0 = 0; + lexp = *p++; lexp <<= 8; lexp |= *p++; sign = (lexp & 0x8000) ? 1 : 0; lexp &= 0x7FFF; + mant1 = *p++; mant1 <<= 8; mant1 |= *p++; mant1 <<= 8; mant1 |= *p++; mant1 <<= 8; mant1 |= *p++; + mant0 = *p++; mant0 <<= 8; mant0 |= *p++; mant0 <<= 8; mant0 |= *p++; mant0 <<= 8; mant0 |= *p++; + if(mant1 == 0 && mant0 == 0 && lexp == 0 && sign == 0) + return 0.0; + else + { + double val; + val = myUlongToDouble(mant0) * pow(2.0, -63.0); + val += myUlongToDouble(mant1) * pow(2.0, -31.0); + val *= pow(2.0, ((double) lexp) - 16383.0); + return sign ? -val : val; + } +} + +static void double_to_ieee_80(double val, unsigned char *p) +{ + short lexp = 0; + unsigned char sign = 0; + unsigned int mant1 = 0; + unsigned int mant0 = 0; + if(val < 0.0) { sign = 1; val = -val; } + if(val != 0.0) /* val identically zero -> all elements zero */ + { + lexp = (short)(log(val) / log(2.0) + 16383.0); + val *= pow(2.0, 31.0 + 16383.0 - (double)lexp); + mant1 = myDoubleToUlong(val); + val -= myUlongToDouble(mant1); + val *= pow(2.0, 32.0); + mant0 = myDoubleToUlong(val); + } + *p++ = ((sign << 7) | (lexp >> 8)); *p++ = 0xFF & lexp; + *p++ = 0xFF & (mant1 >> 24); *p++ = 0xFF & (mant1 >> 16); *p++ = 0xFF & (mant1 >> 8); *p++ = 0xFF & (mant1); + *p++ = 0xFF & (mant0 >> 24); *p++ = 0xFF & (mant0 >> 16); *p++ = 0xFF & (mant0 >> 8); *p++ = 0xFF & (mant0); +} + + +static off_t update_form_size, update_frames_location, update_ssnd_location; + +static int seek_and_read(int chan, unsigned char *buf, off_t offset, int nbytes) +{ + if (offset < 0) return(-1); + lseek(chan, offset, SEEK_SET); + return(read(chan, buf, nbytes)); +} + +static int read_aiff_marker(int m, unsigned char *buf) +{ + int psize; + marker_ids[m] = mus_char_to_bshort((unsigned char *)buf); + marker_positions[m] = mus_char_to_bint((unsigned char *)(buf + 2)); + psize = (int)buf[6] + 1; + if (psize & 1) psize++; + return(psize+6); +} + +static int read_aiff_header(const char *filename, int chan, int overall_offset) +{ + /* we know we have checked for FORM xxxx AIFF|AIFC when we arrive here */ + /* as far as I can tell, the COMM block has the header data we seek, and the SSND block has the sound data */ + int chunksize, chunkloc, i, j, ssnd_bytes = 0; + bool happy, got_comm = false; + off_t offset; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8 + overall_offset)); + update_ssnd_location = 0; + chunkloc = 12 + overall_offset; + offset = 0; + for (i = 0; i < AUX_COMMENTS; i++) aux_comment_start[i] = 0; + data_format = MUS_BSHORT; + srate = 0; + chans = 0; + happy = true; + true_file_length = SEEK_FILE_LENGTH(chan); + update_form_size = mus_char_to_bint((unsigned char *)(hdrbuf + 4 + overall_offset)); /* should be file-size-8 unless there are multiple forms */ + while (happy) + { + offset += chunkloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0) + { + if ((got_comm) && (data_location > 0)) + { + mus_print("%s, aiff header: chunks confused at " OFF_TD "; will try to continue", filename, offset); + break; + } + return(mus_error(MUS_HEADER_READ_FAILED, "%s, aiff header: chunks confused at " OFF_TD , filename, offset)); + } + chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + if ((chunksize == 0) && /* can be empty data chunk */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + /* fprintf(stderr,"chunk: %c%c%c%c for %d\n", hdrbuf[0], hdrbuf[1], hdrbuf[2], hdrbuf[3], chunksize); */ + if (match_four_chars((unsigned char *)hdrbuf, I_COMM)) + { + int frames; + got_comm = true; + chans = mus_char_to_bshort((unsigned char *)(hdrbuf + 8)); + frames = mus_char_to_ubint((unsigned char *)(hdrbuf + 10)); /* was bint 27-Jul-01 */ + update_frames_location = 10 + offset; + original_data_format = mus_char_to_bshort((unsigned char *)(hdrbuf + 14)); + if ((original_data_format % 8) != 0) + { + /* weird sizes are legal -- + * these samples are left-justified (and zero padded on the right), so + * we can handle any bit size by rounding up to the nearest byte. + */ + original_data_format = 8 * (1 + (original_data_format >> 3)); + } + if (original_data_format == 8) data_format = MUS_BYTE; + else if (original_data_format == 16) data_format = MUS_BSHORT; + else if (original_data_format == 24) data_format = MUS_B24INT; + else if (original_data_format == 32) data_format = MUS_BINT; + else if (original_data_format == 64) data_format = MUS_BDOUBLE; + else return(mus_error(MUS_HEADER_READ_FAILED, "%s: bits per sample: %d?", filename, mus_char_to_bshort((unsigned char *)(hdrbuf + 14)))); + srate = (int)ieee_80_to_double((unsigned char *)(hdrbuf + 16)); + /* if AIFC, compression type over-rides (possibly bogus) original_data_format */ + if (type_specifier == mus_char_to_uninterpreted_int((unsigned const char *)I_AIFC)) + { + /* some aifc files assume the compression field is a new and very weird chunk!! -- surely a bug? */ + /* AIFF spec says COMM size is always 18, but this is amended in the newer AIFC spec */ + if (chunksize == 18) chunksize += (5 + ((int)hdrbuf[30])); /* 5 = chunk header length in this case */ + if ((!(match_four_chars((unsigned char *)(hdrbuf + 26), I_NONE))) && + (!(match_four_chars((unsigned char *)(hdrbuf + 26), I_twos)))) + { + original_data_format = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 26)); + if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_ALAW)) || + (match_four_chars((unsigned char *)(hdrbuf + 26), I_alaw))) + data_format = MUS_ALAW; + else + { + if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_ULAW)) || + (match_four_chars((unsigned char *)(hdrbuf + 26), I_ulaw))) + data_format = MUS_MULAW; + else + { + if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_sowt)) || + (match_four_chars((unsigned char *)(hdrbuf + 26), I_ni23))) + { + /* Sound.h sez sowt is just 16-bit format */ + if (data_format == MUS_BSHORT) data_format = MUS_LSHORT; + else if (data_format == MUS_B24INT) data_format = MUS_L24INT; + else if (data_format == MUS_BINT) data_format = MUS_LINT; + } + else + { + if (match_four_chars((unsigned char *)(hdrbuf + 26), I_raw_)) + { + if (data_format == MUS_BYTE) data_format = MUS_UBYTE; + else if (data_format == MUS_BSHORT) data_format = MUS_UBSHORT; + } + else + { + if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_fl32)) || + (match_four_chars((unsigned char *)(hdrbuf + 26), I_FL32))) + data_format = MUS_BFLOAT; + else + { + if (match_four_chars((unsigned char *)(hdrbuf + 26), I_fl64)) + data_format = MUS_BDOUBLE; + else + { + if (match_four_chars((unsigned char *)(hdrbuf + 26), I_ima4)) + { + block_align = 34; + original_data_format = MUS_AIFF_IMA_ADPCM; + } + else + { + if (match_four_chars((unsigned char *)(hdrbuf + 26), I_in32)) + data_format = MUS_BINT; + else + { + if (match_four_chars((unsigned char *)(hdrbuf + 26), I_in24)) + data_format = MUS_B24INT; + else + { + /* others from Sound.h: + 0x6D730002, -- Microsoft ADPCM - ACM code 2 + 0x6D730011, -- DVI/Intel IMA ADPCM - ACM code 17 + 'MAC3' -- MACE 3:1 + 'MAC6' -- MACE 6:1 + 'cdx4' -- CD/XA 4:1 + 'cdx2' -- CD/XA 2:1 + 'dvca' -- DV Audio + 'QDMC' -- QDesign music + 'QDM2' -- QDesign2 music + 'Qclp' -- QUALCOMM PureVoice + 0x6D730055 -- MPEG Layer 3, CBR only (pre QT4.1) + '.mp3' -- MPEG Layer 3, CBR & VBR (QT4.1 and later) + */ + data_format = MUS_UNKNOWN; + } + } + } + } + } + } + } + } + } + } + } + data_size = (frames * mus_bytes_per_sample(data_format) * chans); + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_SSND)) + { + if (data_location != 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: two SSND chunks found", filename)); + update_ssnd_location = offset + 4; + data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 8)) + offset + 16; /* Baroque! */ + /* offset is where the hdrbuf is positioned in the file, the sound data offset itself is at loc+8 and the */ + /* 0-based location of the sound data is at the end of the chunk = 16 (8 = header+4 = offset+4 = blocksize) */ + /* the next int can be the block size if the data is block-aligned */ + /* only one SSND per AIFF is allowed */ + if (chunksize == 0) break; /* this may happen while pre-reading an in-progress output file for updating */ + ssnd_bytes = offset + chunksize - data_location + 8; + } + else + { + if ((match_four_chars((unsigned char *)hdrbuf, I_ANNO)) || + (match_four_chars((unsigned char *)hdrbuf, I_COMT)) || + (match_four_chars((unsigned char *)hdrbuf, I_NAME)) || + (match_four_chars((unsigned char *)hdrbuf, I_AUTH))) + { + j = 0; + for (i = 0; i < AUX_COMMENTS; i++) + if (aux_comment_start[i] == 0) + { + j = i; + break; + } + if (j >= AUX_COMMENTS) + { + mus_print("read_aiff_header: ran out of auxiliary comment space"); + j = 0; + } + aux_comment_start[j] = offset + 8; + if (match_four_chars((unsigned char *)hdrbuf, I_COMT)) + aux_comment_start[j] += 8; /* skip time stamp and markerId (not ID, I assume!) */ + aux_comment_end[j] = offset + 7 + chunksize; + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_APPL)) + { + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_MUS_)) + { + /* my own chunk has the arbitrary length comment I use (actually the ASCII */ + /* representation of a lisp program evaluated in the CLM package) to handle mix et al. */ + /* It is nothing more than the actual string -- remember to pad to even length here. */ + comment_start = offset + 12; + comment_end = comment_start + chunksize - 5; + } + else + { + if ((match_four_chars((unsigned char *)(hdrbuf + 8), I_SU7M)) || + (match_four_chars((unsigned char *)(hdrbuf + 8), I_SU7R))) + { + mus_print("this is an SU700 ssp file?"); + data_location = 512; + chans = 1; + /* actually SU7M and SU7R point to 2 chan data as separate chunks */ + } + } + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_INST)) + { + base_note = hdrbuf[8]; + base_detune = hdrbuf[9]; + loop_modes[0] = mus_char_to_bshort((unsigned char *)(hdrbuf + 16)); + loop_starts[0] = mus_char_to_bshort((unsigned char *)(hdrbuf + 18)); + loop_ends[0] = mus_char_to_bshort((unsigned char *)(hdrbuf + 20)); + loop_modes[1] = mus_char_to_bshort((unsigned char *)(hdrbuf + 22)); + loop_starts[1] = mus_char_to_bshort((unsigned char *)(hdrbuf + 24)); + loop_ends[1] = mus_char_to_bshort((unsigned char *)(hdrbuf + 26)); + /* these are mark numbers */ + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_MARK)) + { + int num_marks, m, moff, msize; + /* unsigned short #marks, each mark: id pos name (pstring damn it) */ + num_marks = mus_char_to_ubshort((unsigned char *)(hdrbuf + 8)); + if (num_marks > markers) + { + if (markers > 0) + { + if (marker_ids) FREE(marker_ids); + if (marker_positions) FREE(marker_positions); + } + markers = num_marks; + marker_ids = (int *)CALLOC(markers, sizeof(int)); + marker_positions = (int *)CALLOC(markers, sizeof(int)); + } + moff = 10; + for (m = 0; m < num_marks; m++) + { + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset + moff, 8) > 0) + { + msize = read_aiff_marker(m, (unsigned char *)hdrbuf); + moff += msize; + } + } + } + } + } + } + } + } + chunkloc = (8 + chunksize); + if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */ + if ((offset + chunkloc) >= update_form_size) happy = false; + } + if (!got_comm) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no COMM chunk", filename)); + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no SSND (data) chunk", filename)); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + if ((data_size > ssnd_bytes) && (data_format != MUS_UNKNOWN)) + data_size = ssnd_bytes; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + +static int sndlib_format_to_aiff_bits(int format) +{ + switch (format) + { + case MUS_BSHORT: case MUS_LSHORT: case MUS_UBSHORT: case MUS_ULSHORT: return(16); break; + case MUS_B24INT: case MUS_L24INT: return(24); break; + case MUS_BINT: case MUS_LINT: case MUS_BFLOAT: case MUS_LFLOAT: return(32); break; + case MUS_BDOUBLE: case MUS_LDOUBLE: return(64); break; + case MUS_BYTE: case MUS_UBYTE: case MUS_MULAW: case MUS_ALAW: return(8); break; + default: + return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "aiff header: can't write data format: %d (%s)", + format, + any_data_format_name(format))); + break; + } +} + +static const char *sndlib_format_to_aifc_name(int format) +{ + switch (format) + { + case MUS_BSHORT: case MUS_B24INT: case MUS_BINT: case MUS_BYTE: return((const char *)I_NONE); break; /* use in24 and in32? */ + case MUS_LSHORT: case MUS_L24INT: case MUS_LINT: return((const char *)I_sowt); break; /* should this use ni23? */ + case MUS_BFLOAT: return((const char *)I_fl32); break; + case MUS_BDOUBLE: return((const char *)I_fl64); break; + case MUS_UBYTE: case MUS_UBSHORT: return((const char *)I_raw_); break; + case MUS_MULAW: return((const char *)I_ulaw); break; + case MUS_ALAW: return((const char *)I_alaw); break; + default: return((const char *)I_NONE); break; + } +} + +static int write_aif_header(int chan, int wsrate, int wchans, int siz, int format, const char *comment, int len, bool aifc_header) +{ + /* we write the simplest possible AIFC header: AIFC | COMM | APPL-MUS_ if needed | SSND eof. */ + /* the assumption being that we're going to be appending sound data once the header is out */ + /* INST and MARK chunks added Jul-95 for various programs that expect them (MixView). */ + int i, j, lenhdr, lenloop, curend, extra; /* set aifc to 0 to get old-style AIFF header */ + char *str; + lenhdr = 0; + extra = 0; + curend = 0; + lenloop = 38; + if ((loop_modes[0] != 0) || (loop_modes[1] != 0)) lenloop = 42 + 28; + if (len != 0) + { + lenhdr = 12; + if ((len % 4) != 0) + extra = (4 - (len % 4)); + } + write_four_chars((unsigned char *)hdrbuf, I_FORM); + if (aifc_header) + mus_bint_to_char((unsigned char *)(hdrbuf + 4), len + 30 + 16 + lenloop + siz + lenhdr + extra + 12 + 10); + else mus_bint_to_char((unsigned char *)(hdrbuf + 4), len + 30 + 16 + lenloop + siz + lenhdr + extra); + /* + * comment length + 4 for AIFF 18+8 for I_COMM info + 16 for I_SSND info + 38 for INST and MARK + + * siz for data + 12 for comment header if any + padding == total size - 8 (i.e. FORM header). + * INST+MARK (38) added 3-Jul-95 for Notam software compatibility + */ + if (aifc_header) + { + write_four_chars((unsigned char *)(hdrbuf + 8), I_AIFC); + CHK_WRITE(chan, hdrbuf, 12); + curend = 12; + write_four_chars((unsigned char *)hdrbuf, I_FVER); + mus_bint_to_char((unsigned char *)(hdrbuf + 4), 4); + mus_bint_to_char((unsigned char *)(hdrbuf + 8), 0xA2805140); + } + else write_four_chars((unsigned char *)(hdrbuf + 8), I_AIFF); + write_four_chars((unsigned char *)(hdrbuf + 12), I_COMM); + if (aifc_header) + mus_bint_to_char((unsigned char *)(hdrbuf + 16), 18 + 10); + else mus_bint_to_char((unsigned char *)(hdrbuf + 16), 18); + mus_bshort_to_char((unsigned char *)(hdrbuf + 20), (short)wchans); + if (wchans > 0) + mus_bint_to_char((unsigned char *)(hdrbuf + 22), siz / (wchans * mus_bytes_per_sample(format))); + mus_bshort_to_char((unsigned char *)(hdrbuf + 26), sndlib_format_to_aiff_bits(format)); + double_to_ieee_80((double)wsrate, (unsigned char *)(hdrbuf + 28)); + if (aifc_header) + { + str = (char *)sndlib_format_to_aifc_name(format); + write_four_chars((unsigned char *)(hdrbuf + 38), (const unsigned char *)str); + (*(unsigned char *)(hdrbuf + 42)) = 4; /* final pad null not accounted-for */ + write_four_chars((unsigned char *)(hdrbuf + 43), (const unsigned char *)str); + (*(unsigned char *)(hdrbuf + 47)) = 0; + i = 48; + } + else i = 38; + if (len != 0) + { + if (aifc_header) + { + write_four_chars((unsigned char *)(hdrbuf + 48), I_APPL); + mus_bint_to_char((unsigned char *)(hdrbuf + 52), len + 4 + extra); + write_four_chars((unsigned char *)(hdrbuf + 56), I_MUS_); + i = 60; + } + else + { + write_four_chars((unsigned char *)(hdrbuf + 38), I_APPL); + mus_bint_to_char((unsigned char *)(hdrbuf + 42), len + 4 + extra); + write_four_chars((unsigned char *)(hdrbuf + 46), I_MUS_); + i = 50; + } + for (j = 0; j < len; j++) + { + if (i == HDRBUFSIZ) + { + curend += HDRBUFSIZ; + CHK_WRITE(chan, hdrbuf, HDRBUFSIZ); + i = 0; + } + hdrbuf[i] = comment[j]; + i++; + } + if (extra != 0) + { + if ((i + extra) > HDRBUFSIZ) + { + curend += i; + CHK_WRITE(chan, hdrbuf, i); + i = 0; + } + for (j = 0; j < extra; j++) + { + hdrbuf[i] = 0; + i++; + } + } + } + curend += i; + CHK_WRITE(chan, hdrbuf, i); + if ((loop_modes[0] == 0) && (loop_modes[1] == 0)) + { + write_four_chars((unsigned char *)hdrbuf, I_MARK); /* SoundHack includes a blank MARK chunk for some reason */ + mus_bint_to_char((unsigned char *)(hdrbuf + 4), 2); + mus_bshort_to_char((unsigned char *)(hdrbuf + 8), 0); + write_four_chars((unsigned char *)(hdrbuf + 10), I_INST); + mus_bint_to_char((unsigned char *)(hdrbuf + 14), 20); + mus_bint_to_char((unsigned char *)(hdrbuf + 18), 0x3c00007f); /* base-note = middle C, detune = 0, lownote = 0, highnote = 0x7f */ + mus_bint_to_char((unsigned char *)(hdrbuf + 22), 0x017f0000); /* lowvelocity = 1, highvelocity = 0x7f, gain = 0 */ + mus_bint_to_char((unsigned char *)(hdrbuf + 26), 0); /* no loops */ + mus_bint_to_char((unsigned char *)(hdrbuf + 30), 0); + mus_bint_to_char((unsigned char *)(hdrbuf + 34), 0); + CHK_WRITE(chan, hdrbuf, 38); + curend += 38; + } + else + { + write_four_chars((unsigned char *)hdrbuf, I_MARK); + mus_bint_to_char((unsigned char *)(hdrbuf + 4), 8 * 4 + 2); /* 2 for mark#, then 2:id + 4:pos + 2:pstr */ + /* loop_info: 0..3 are markers positions (ids 1..4) */ + mus_bshort_to_char((unsigned char *)(hdrbuf + 8), 4); + for (j = 0; j < 4; j++) + { + mus_bshort_to_char((unsigned char *)(hdrbuf + 10 + 8 * j), j + 1); + switch (j) + { + case 0: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_starts[0]); break; + case 1: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_ends[0]); break; + case 2: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_starts[1]); break; + case 3: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_ends[1]); break; + } + mus_bshort_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 6), 0); + } + CHK_WRITE(chan, hdrbuf, 42); + curend += 42; + write_four_chars((unsigned char *)hdrbuf, I_INST); + mus_bint_to_char((unsigned char *)(hdrbuf + 4), 20); + mus_bint_to_char((unsigned char *)(hdrbuf + 8), 0x3c00007f); + mus_bint_to_char((unsigned char *)(hdrbuf + 12), 0x017f0000); + hdrbuf[8] = (unsigned char)(base_note); + hdrbuf[9] = (unsigned char)(base_detune); + mus_bshort_to_char((unsigned char *)(hdrbuf + 16), loop_modes[0]); + mus_bshort_to_char((unsigned char *)(hdrbuf + 18), 1); + mus_bshort_to_char((unsigned char *)(hdrbuf + 20), 2); + mus_bshort_to_char((unsigned char *)(hdrbuf + 22), loop_modes[1]); + mus_bshort_to_char((unsigned char *)(hdrbuf + 24), 3); + mus_bshort_to_char((unsigned char *)(hdrbuf + 26), 4); + CHK_WRITE(chan, hdrbuf, 28); + curend += 28; + } + write_four_chars((unsigned char *)(hdrbuf), I_SSND); + mus_bint_to_char((unsigned char *)(hdrbuf + 4), siz + 8); + mus_bint_to_char((unsigned char *)(hdrbuf + 8), 0); /* "offset" */ + mus_bint_to_char((unsigned char *)(hdrbuf + 12), 0); /* "blocksize " */ + CHK_WRITE(chan, hdrbuf, 16); + data_location = 16 + curend; + return(MUS_NO_ERROR); +} + +char *mus_header_aiff_aux_comment(const char *name, off_t *starts, off_t *ends) +{ + /* AIFC: look for aux comments (ANNO chunks) */ + char *sc = NULL; + if ((starts) && (starts[0] != 0)) + { + off_t full_len; + int fd, i; + fd = mus_file_open_read(name); + if (fd == -1) return(NULL); + full_len = 0; + for (i = 0; i < AUX_COMMENTS; i++) + if ((starts[i] > 0) && + (starts[i] < ends[i])) + full_len += (ends[i] - starts[i] + 3); + if (full_len > 0) + { + off_t sc_len; + sc = (char *)CALLOC(full_len, sizeof(char)); + sc_len = 0; + for (i = 0; i < AUX_COMMENTS; i++) + { + off_t start, end, len; + start = starts[i]; + end = ends[i]; + if ((start > 0) && (start < end)) + { + int j; + len = end - start + 1; + lseek(fd, start, SEEK_SET); + CHK_READ(fd, (char *)(sc + sc_len), len); + for (j = 0; j < len; j++) + if (sc[j + sc_len] == 0) + sc[j + sc_len] = ' '; + sc_len += len; + sc[sc_len++] = '\n'; + } + } + } + CLOSE(fd, name); + } + return(sc); +} + +/* ------------------------------------ RIFF (wave) ------------------------------------ + * + * see ftp.microsoft.com:/SoftLib/MSLFILES/MDRK.EXE (also MMSYSTEM.H and MMREG.H) + * ftp://ftp.isi.edu/in-notes/rfc2361.txt + * + * 0: "RIFF" (little-endian) or "RIFX" (big-endian) + * 4: size + * 8: "WAVE" ("RMID" = midi data, others are AVI, CPPO, ACON, DLS? etc) + * AVI chunk can include audio data + * + * rest very similar to AIFF (odd-sized chunks are padded) + * + * fmt 0: format code (see below) + * 2: chans + * 4: srate (long) + * 8: average rate "for buffer estimation" + * 12: alignment "block size" + * 14: data size (bits per sample) (PCM only) + * 16: count (bytes) of extra info in the header (i.e. trailing info added to this basic header) + * 20: samples per block (short) in dvi_adpcm + * + * formats are: 0: unknown, 1: PCM, 2: ADPCM, 3: IEEE float, 4: VSELP, 5: IBM_CVSD, 6: alaw, 7: mulaw + * 0x10: OKI_ADPCM, 0x11: DVI_ADPCM, 0x12: MediaSpace_ADPCM, + * 0x13: Sierra_ADPCM, 0x14: G723_ADPCM, 0x15: DIGISTD, 0x16: DIGIFIX, 0x17: Dialogic ADPCM, + * 0x18: Mediavision ADPCM, 0x19: HP cu codec, + * 0x20: Yamaha_ADPCM, 0x21: SONARC, 0x22: DSPGroup_TrueSpeech + * 0x23: EchoSC1, 0x24: AudioFile_AF36, 0x25: APTX, 0x26: AudioFile_AF10 + * 0x27: prosody 1612, 0x28: lrc, + * 0x30: Dolby_Ac2, 0x31: GSM610, 0x32: MSN audio codec, 0x33: Antext_ADPCM, 0x34: Control_res_vqlpc, + * 0x35: DIGIREAL, 0x36: DIGIADPCM, 0x37: Control_res_cr10, 0x38: NMS_VBXADPCM, 0x39:Roland rdac, + * 0x3a: echo sc3, 0x3b: Rockwell adpcm, 0x3c: Rockwell digitalk codec, 0x3d: Xebec, + * 0x40: G721_ADPCM, 0x41: G728 CELP, 0x42: MS G723, 0x50: MPEG, + * 0x52: RT24, 0x53: PAC, 0x55: Mpeg layer 3, 0x59: Lucent G723, 0x60: Cirrus, + * 0x61: ESS Tech pcm, 0x62: voxware (obsolete), 0x63: canopus atrac, + * 0x64: G726, 0x65: G722, 0x66: DSAT, 0x67: DSAT display, + * 0x69: voxware (obsolete), 0x70: voxware ac8 (obsolete), 0x71: voxware ac10 (obsolete), + * 0x72: voxware ac16 (obsolete), 0x73: voxware ac20 (obsolete), 0x74: voxware rt24, + * 0x75: voxware rt29, 0x76: voxware rt29hw (obsolete), 0x77: voxware vr12 (obsolete), + * 0x78: voxware vr18 (obsolete), 0x79: voxware tq40 (obsolete), + * 0x80: softsound, 0x81: voxware tq60 (obsolete), 0x82: MS RT24, 0x83: G729A, + * 0x84: MVI_MVI2, 0x85: DF G726, 0x86: DF GSM610, 0x88: isaudio, 0x89: onlive, + * 0x91: sbc24, 0x92: dolby ac3 spdif, 0x97: zyxel adpcm, 0x98: philips lpcbb, + * 0x99: packed, 0x100: rhetorex adpcm, + * 0x101: Irat, 0x102: IBM_alaw?, 0x103: IBM_ADPCM?, + * 0x111: vivo G723, 0x112: vivo siren, 0x123: digital g273 + * 0x200: Creative_ADPCM, 0x202: Creative fastspeech 8, 0x203: Creative fastspeech 10, + * 0x220: quarterdeck, 0x300: FM_TOWNS_SND, 0x400: BTV digital, 0x680: VME vmpcm, + * 0x1000: OLIGSM, 0x1001: OLIADPCM, 0x1002: OLICELP, 0x1003: OLISBC, 0x1004: OLIOPR + * 0x1100: LH codec, 0x1400: Norris, 0x1401: isaudio, 0x1500: Soundspace musicompression, 0x2000: DVM + * (see http://www.microsoft.com/asf/resources/draft-ietf-fleischman-codec-subtree-00.txt) + * and new: 0xFFFE: wave_format_extensible: bits/sample, mapping, 16 byte guid, 1st 2 bytes are code as above + * + * RIFF and LIST chunks have nested chunks. Registered chunk names include: + * LIST with subchunks, one of which can be: + * INFO itself containing: + * IARL: archival location, IART: artist, ICMS: commissioned, ICMT: comment, ICOP: copyright, ICRD: creation date, + * ICRP: uh...cropped, IDIM: dimensions, IDPI: dpi, IENG: engineer, IGNR: genre, IKEY: keywords, ILGT: lightness, + * IMED: medium, INAM: name, IPLT: palette, IPRD: product, ISBJ: subject, ISFT: software, ISHP: sharpness, + * ISRC: source, ISRF: source form, ITCH: technician, ISMP: SMPTE time code, IDIT: digitization time + * + * data chunk has the samples + * other (currently ignored) chunks are wavl = waveform data, fact, cues of some sort, slnt = silence, + * plst = playlist, adtl = associated data list, labl = cue label, note = cue comments, + * ltxt = text associated with data segment (cue), file, DISP = displayable object, + * JUNK = outdated info, PAD = padding, etc + * fact chunk generally has number of samples (used in compressed files) + */ + +static int wave_to_sndlib_format(int osf, int bps, bool little) +{ + switch (osf) + { + case 1: + switch (bps) + { + case 8: return(MUS_UBYTE); break; + case 16: if (little) return(MUS_LSHORT); else return(MUS_BSHORT); break; + case 32: if (little) return(MUS_LINT); else return(MUS_BINT); break; + case 24: if (little) return(MUS_L24INT); else return(MUS_B24INT); break; + default: return(MUS_UBYTE); break; + } + break; + case 3: + if (little) + { + if (bps == 64) + return(MUS_LDOUBLE); + else return(MUS_LFLOAT); + } + else + { + if (bps == 64) + return(MUS_BDOUBLE); + else return(MUS_BFLOAT); + } + break; + case 6: if (bps == 8) return(MUS_ALAW); break; + case 7: if (bps == 8) return(MUS_MULAW); break; + /* IBM mulaw follows G711 specs like other versions (this info direct from IBM) */ + case 0x101: return(MUS_MULAW); break; + case 0x102: return(MUS_ALAW); break; + } + return(MUS_UNKNOWN); +} + +static int read_riff_header(const char *filename, int chan) +{ + /* we know we have checked for RIFF xxxx WAVE when we arrive here */ + int chunksize, chunkloc, i; + bool little, got_fmt = false; + off_t offset; + little = true; + if (match_four_chars((unsigned char *)hdrbuf, I_RIFX)) little = false; /* big-endian data in this case, but I've never seen one */ + little_endian = little; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8)); + chunkloc = 12; + offset = 0; + data_format = MUS_UNKNOWN; + srate = 0; + chans = 0; + fact_samples = 0; + bits_per_sample = 0; + for (i = 0; i < AUX_COMMENTS; i++) aux_comment_start[i] = 0; + true_file_length = SEEK_FILE_LENGTH(chan); + update_form_size = big_or_little_endian_int((unsigned char *)(hdrbuf + 4), little); + while (true) + { + offset += chunkloc; + if (offset >= true_file_length) break; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 64) <= 0) break; + chunksize = big_or_little_endian_int((unsigned char *)(hdrbuf + 4), little); + if ((chunksize == 0) && /* can be empty data chunk */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + if (match_four_chars((unsigned char *)hdrbuf, I_fmt_)) + { + /* + * 8: short format code --1 = PCM for example + * 10: short chans --1 + * 12: long rate --48000 (0xbb80) + * 16: long ave rate --65655 (0x10077) + * 20: short align --2 + * 22: short data size (bits) --16 + * 24: bytes of extra + * ... some extra data dependent on format + * + * R I F F # # # # W A V E f m t sp + * 5249 4646 f851 0500 5741 5645 666d 7420 + * e40f 0000 0100 0100 80bb 0000 0077 0100 + * 0200 1000 0000 0000 0000 0000 0000 0000 + * + * #x000551f8 = 348664 = size in bytes - 8 + * #x00000fe4 = 4068 [fmt_ chunk size?] + */ + got_fmt = true; + original_data_format = big_or_little_endian_short((unsigned char *)(hdrbuf + 8), little); + chans = big_or_little_endian_short((unsigned char *)(hdrbuf + 10), little); + srate = big_or_little_endian_int((unsigned char *)(hdrbuf + 12), little); + update_frames_location = 12 + offset; + block_align = big_or_little_endian_short((unsigned char *)(hdrbuf + 20), little); + bits_per_sample = big_or_little_endian_short((unsigned char *)(hdrbuf + 22), little); + if (original_data_format == -2) /* 0xFFFE = "extensible" : short size=22, short bits, long chanmap, short format */ + original_data_format = big_or_little_endian_short((unsigned char *)(hdrbuf + 24 + 8), little); + data_format = wave_to_sndlib_format(original_data_format, bits_per_sample, little); + } + else + { + if ((match_four_chars((unsigned char *)hdrbuf, I_data)) && (data_location == 0)) + { + update_ssnd_location = offset + 4; + data_location = offset + 8; + data_size = big_or_little_endian_uint((unsigned char *)(hdrbuf + 4), little); /* was int 27-Jul-01 */ + if (chunksize == 0) break; /* see aiff comment */ + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_fact)) + { + fact_samples = big_or_little_endian_int((unsigned char *)(hdrbuf + 8), little); + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_inst)) + { + base_note = hdrbuf[8]; + base_detune = hdrbuf[9]; + /* rest is gain low-note high-note low-velocity high-velocity */ + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_clm_)) + { + comment_start = offset + 8; + comment_end = comment_start + chunksize - 1; /* end of comment not start of next chunk */ + } + else + { + if ((match_four_chars((unsigned char *)hdrbuf, I_LIST)) && + (match_four_chars((unsigned char *)(hdrbuf + 8), I_INFO))) + { + aux_comment_start[0] = offset + 8; + aux_comment_end[0] = offset + 8 + chunksize - 1; + } + } + } + } + } + } + chunkloc = (8 + chunksize); + if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */ + } + if (!got_fmt) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no fmt chunk?", filename)); + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no data chunk?", filename)); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + +static int write_riff_header(int chan, int wsrate, int wchans, int siz, int format, const char *comment, int len) +{ + int i, j, lenhdr, extra; + off_t offset, curend; + lenhdr = 0; + extra = 0; + if (len != 0) + { + lenhdr = 12; + if ((len % 4) != 0) + extra = (4 - (len % 4)); + } + write_four_chars((unsigned char *)hdrbuf, I_RIFF); + mus_lint_to_char((unsigned char *)(hdrbuf + 4), len + 36 + siz + lenhdr + extra); + write_four_chars((unsigned char *)(hdrbuf + 8), I_WAVE); + write_four_chars((unsigned char *)(hdrbuf + 12), I_fmt_); + mus_lint_to_char((unsigned char *)(hdrbuf + 16), 24 - 8); + switch (format) + { + case MUS_MULAW: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 7); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 8); + break; + case MUS_ALAW: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 6); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 8); + break; + case MUS_UBYTE: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 8); + break; + case MUS_LSHORT: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 16); + break; + case MUS_L24INT: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 24); + break; + case MUS_LINT: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 32); + break; + case MUS_LFLOAT: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 3); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 32); + break; + case MUS_LDOUBLE: + mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 3); + mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 64); + break; + default: + return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "riff header: can't write data format: %d (%s)", + format, + any_data_format_name(format))); + break; + } + mus_lshort_to_char((unsigned char *)(hdrbuf + 22), (short)wchans); + mus_lint_to_char((unsigned char *)(hdrbuf + 24), wsrate); + mus_lint_to_char((unsigned char *)(hdrbuf + 28), wsrate * wchans * mus_bytes_per_sample(format)); /* added chans 10-Mar-99 */ + mus_lshort_to_char((unsigned char *)(hdrbuf + 32), (short)(wchans * mus_bytes_per_sample(format))); + + offset = 36; + i = 36; + curend = 0; + if (len != 0) + { + offset += len + 12; + write_four_chars((unsigned char *)(hdrbuf + 36), I_clm_); + mus_lint_to_char((unsigned char *)(hdrbuf + 40), len + extra); + i = 44; + for (j = 0; j < len; j++) + { + if (i == HDRBUFSIZ) + { + curend += HDRBUFSIZ; + CHK_WRITE(chan, hdrbuf, HDRBUFSIZ); + i = 0; + } + hdrbuf[i] = comment[j]; + i++; + } + if (extra != 0) + { + if ((i + extra) > HDRBUFSIZ) + { + curend += i; + CHK_WRITE(chan, hdrbuf, i); + i = 0; + } + for (j = 0; j < extra; j++) + { + hdrbuf[i] = 0; + i++; + } + } + } + curend += i; + CHK_WRITE(chan, hdrbuf, i); + write_four_chars((unsigned char *)hdrbuf, I_data); + mus_lint_to_char((unsigned char *)(hdrbuf + 4), siz); + data_location = 8 + curend; + CHK_WRITE(chan, hdrbuf, 8); + return(MUS_NO_ERROR); +} + +char *mus_header_riff_aux_comment(const char *name, off_t *starts, off_t *ends) +{ + char *sc = NULL, *auxcom; + if ((starts) && (starts[0] != 0)) + { + int len, j, fd, k, m; + off_t i, end; + /* found a LIST+INFO chunk (and no other comment) */ + fd = mus_file_open_read(name); + if (fd == -1) return(NULL); + i = starts[0]; + end = ends[0]; + sc = (char *)CALLOC(end - i + 2, sizeof(char)); + j = 0; + k = 4; + lseek(fd, i, SEEK_SET); + auxcom = (char *)CALLOC(end - i + 2, sizeof(char)); + CHK_READ(fd, auxcom, end - i + 1); + CLOSE(fd, name); + i += 4; + while (i < end) + { + for (m = 0; m < 4; m++) sc[j++] = auxcom[k++]; + len = mus_char_to_lint((unsigned char *)(auxcom + k)); + if ((len <= 0) || (len > end)) break; + sc[j++] = ':'; + sc[j++] = ' '; + k += 4; + for (m = 0; m < len; m++) + if (auxcom[k] != 0) + sc[j++] = auxcom[k++]; + else k++; + sc[j++] ='\n'; + if (len & 1) + { + len++; + k++; + } + i += (len + 8); + } + FREE(auxcom); + } + return(sc); +} + + +/* soundforge -- just a quick hack until I get better documentation */ +static long little_long_long(unsigned char *buf) +{ + return(mus_char_to_lint((unsigned char *)(buf))); +} + +static int read_soundforge_header(const char *filename, int chan) +{ + /* like RIFF but lowercase and 64-bit vals */ + int chunksize, chunkloc, i, off; + off_t offset; + chunkloc = 12 * 2 + 16; + offset = 0; + data_format = MUS_UNKNOWN; + srate = 0; + chans = 0; + fact_samples = 0; + bits_per_sample = 0; + for (i = 0; i < AUX_COMMENTS; i++) aux_comment_start[i] = 0; + true_file_length = SEEK_FILE_LENGTH(chan); + update_form_size = little_long_long((unsigned char *)(hdrbuf + 4 * 2)); + while (true) + { + offset += chunkloc; + if (offset >= true_file_length) break; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 64) <= 0) break; + chunksize = little_long_long((unsigned char *)(hdrbuf + 16)); + if ((chunksize == 0) && /* can be empty data chunk? */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + if (match_four_chars((unsigned char *)hdrbuf, I_fmt_)) + { + off = 16; + original_data_format = mus_char_to_lshort((unsigned char *)(hdrbuf + 8 + off)); + chans = mus_char_to_lshort((unsigned char *)(hdrbuf + 10 + off)); + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 12 + off)); + block_align = mus_char_to_lshort((unsigned char *)(hdrbuf + 20 + off)); + bits_per_sample = mus_char_to_lshort((unsigned char *)(hdrbuf + 22 + off)); + data_format = wave_to_sndlib_format(original_data_format, bits_per_sample, true); + } + else + { + if ((match_four_chars((unsigned char *)hdrbuf, I_data)) && (data_location == 0)) + { + data_location = offset + 16 + 8; + data_size = mus_char_to_ulint((unsigned char *)(hdrbuf + 16)); + if (chunksize == 0) break; /* see aiff comment */ + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_fact)) + { + fact_samples = mus_char_to_lint((unsigned char *)(hdrbuf + 8)); + } + } + } + chunkloc = (8 + chunksize); + chunkloc -= 8; + if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */ + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no data chunk?", filename)); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ AVI ------------------------------------ + * actually a video format, but it sometimes contains embedded 'wave' data + * + * RIFF xxx AVI + * <various LISTs> + * LIST xxxx hdr1 LIST strl(?) strh | strf | strn etc + * strf is the WAVE header starting with the sound format + * LIST xxxx movi ##db|##wb -- wb subblocks have the audio data (these need to be collected as a single stream) + * there are many complications that we make no effort to handle here + * + * described in http://www.rahul.net/jfm/avi.html + */ + +static int read_avi_header(const char *filename, int chan) +{ + /* we know we have checked for RIFF xxxx AVI when we arrive here */ + int chunksize, chunkloc, cksize, bits; + bool happy; + off_t ckoff, cktotal, offset; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8)); + chunkloc = 12; + offset = 0; + data_format = MUS_UNKNOWN; + srate = 0; + chans = 1; + happy = true; + true_file_length = SEEK_FILE_LENGTH(chan); + while (happy) + { + offset += chunkloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s avi header: chunks confused at " OFF_TD, filename, offset)); + chunksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + if ((chunksize == 0) && /* can be empty data chunk? */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + if (match_four_chars((unsigned char *)hdrbuf, I_LIST)) + { + ckoff = offset + 12; + cktotal = 12; + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_movi)) + { + while (cktotal < chunksize) + { + lseek(chan, ckoff, SEEK_SET); + CHK_READ(chan, hdrbuf, 8); + cksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + if ((hdrbuf[2] == 'w') && (hdrbuf[3] == 'b')) + { + data_location = ckoff; + if (srate != 0) happy = false; + break; + } + ckoff += (8 + cksize); + cktotal += (8 + cksize); + } + } + else + { + while (cktotal < chunksize) + { + lseek(chan, ckoff, SEEK_SET); + CHK_READ(chan, hdrbuf, 8); + cksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + ckoff += (8 + cksize); + cktotal += (8 + cksize); + if (match_four_chars((unsigned char *)hdrbuf, I_LIST)) + { + off_t cksizer, ckoffr, cktotalr, rdsize; + ckoffr = ckoff + 12; + cktotalr = 12; + while (cktotalr < cksize) + { + lseek(chan, ckoffr, SEEK_SET); + CHK_READ(chan, hdrbuf, 8); + cksizer = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + ckoffr += (8 + cksizer); + cktotalr += (8 + cksizer); + if (match_four_chars((unsigned char *)hdrbuf, I_strf)) + { + if (cksizer < HDRBUFSIZ) + rdsize = cksizer; + else rdsize = HDRBUFSIZ; + CHK_READ(chan, hdrbuf, rdsize); + original_data_format = mus_char_to_lshort((unsigned char *)hdrbuf); + chans = mus_char_to_lshort((unsigned char *)(hdrbuf + 2)); + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + /* block_align = mus_char_to_lshort((unsigned char *)(hdrbuf + 12)); */ + bits = mus_char_to_lshort((unsigned char *)(hdrbuf + 14)); + /* only 16 bit linear little endian for now */ + if ((bits == 16) && (original_data_format == 1)) + data_format = MUS_LSHORT; + if (data_location != 0) happy = false; + break; + } + } + } + } + } + } + chunkloc = (8 + chunksize); + if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */ + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no movi chunk?", filename)); + if (data_location > true_file_length) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ SoundFont 2.0 ------------------------------------ + * + * Emu's SoundFont(tm) format uses RIFF -- at ftp.creaf.com:/pub/emu/sf2_00a.ps) + * + * RIFF xxxx sfbk followed by + * LIST xxxx INFO chunk (nothing of interest -- icmt subchunk might have comments) + * LIST xxxx sdta chunk = data + * smpl chunk (16 bit linear little-endian) + * LIST xxxx pdta list chunk + * shdr subchunk has srate at 40 (int), samples at 28 + * + * http://smurf.sourceforge.net/sfont_intro.php + * http://www.hammersound.net/ + */ + +static int soundfont_entries = 0; +static int *soundfont_starts = NULL, *soundfont_ends = NULL, *soundfont_loop_starts = NULL, *soundfont_loop_ends = NULL; +static int soundfont_size = 0; +static char **soundfont_names = NULL; + +static void soundfont_entry(const char *name, int start, int end, int loop_start, int loop_end) +{ + if (soundfont_entries == soundfont_size) + { + int i; + if (soundfont_size == 0) + { + soundfont_size = 8; + soundfont_starts = (int *)CALLOC(soundfont_size, sizeof(int)); + soundfont_ends = (int *)CALLOC(soundfont_size, sizeof(int)); + soundfont_loop_starts = (int *)CALLOC(soundfont_size, sizeof(int)); + soundfont_loop_ends = (int *)CALLOC(soundfont_size, sizeof(int)); + soundfont_names = (char **)CALLOC(soundfont_size, sizeof(char *)); + } + else + { + soundfont_size += 8; + soundfont_starts = (int *)REALLOC(soundfont_starts, soundfont_size * sizeof(int)); + soundfont_ends = (int *)REALLOC(soundfont_ends, soundfont_size * sizeof(int)); + soundfont_loop_starts = (int *)REALLOC(soundfont_loop_starts, soundfont_size * sizeof(int)); + soundfont_loop_ends = (int *)REALLOC(soundfont_loop_ends, soundfont_size * sizeof(int)); + soundfont_names = (char **)REALLOC(soundfont_names, soundfont_size * sizeof(char *)); + } + for (i = soundfont_entries; i < soundfont_size; i++) soundfont_names[i] = NULL; + } + if (soundfont_names[soundfont_entries] == NULL) soundfont_names[soundfont_entries] = (char *)CALLOC(20, sizeof(char)); + strcpy(soundfont_names[soundfont_entries], name); + soundfont_starts[soundfont_entries] = start; + soundfont_ends[soundfont_entries] = end; + soundfont_loop_starts[soundfont_entries] = loop_start; + soundfont_loop_ends[soundfont_entries] = loop_end; + soundfont_entries++; +} + +int mus_header_sf2_entries(void) {return(soundfont_entries);} +char *mus_header_sf2_name(int n) {return(soundfont_names[n]);} +int mus_header_sf2_start(int n) {return(soundfont_starts[n]);} +int mus_header_sf2_end(int n) {return(soundfont_ends[n]);} +int mus_header_sf2_loop_start(int n) {return(soundfont_loop_starts[n]);} +int mus_header_sf2_loop_end(int n) {return(soundfont_loop_ends[n]);} + +static int read_soundfont_header(const char *filename, int chan) +{ + /* we know we have checked for RIFF xxxx sfbk when we arrive here */ + int chunksize, chunkloc, type, cksize, i, this_end, last_end; + off_t ckoff, offset; + bool happy; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8)); + chunkloc = 12; + offset = 0; + soundfont_entries = 0; + data_format = MUS_LSHORT; + srate = 0; + chans = 1; + happy = true; + last_end = 0; + true_file_length = SEEK_FILE_LENGTH(chan); + while (happy) + { + offset += chunkloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s soundfont header: chunks confused at " OFF_TD, filename, offset)); + chunksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + if ((chunksize == 0) && /* can be empty data chunk? */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + if (match_four_chars((unsigned char *)hdrbuf, I_LIST)) + { + /* everything is squirreled away in LIST chunks in this format */ + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_pdta)) + { + /* go searching for I_shdr -- headers this complicated should be illegal. */ + ckoff = offset + 12; + lseek(chan, ckoff, SEEK_SET); + while (srate == 0) + { + size_t bytes; + bytes = read(chan, hdrbuf, 8); + if (bytes == 0) + { + happy = false; + break; + } + i = 0; + cksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + ckoff += (8 + cksize); + /* here we need to jump over subchunks! -- 4-Aug-97 */ + if (match_four_chars((unsigned char *)hdrbuf, I_shdr)) + { + /* each sound: + * 0: name + * 20: start (in samples from start of bank) + * 24: end + * 28: loop start (also relative to start of bank) + * 32: loop end + * 36: sample rate + * 40: pitch (60 = middle C) + * 41: detune (cents) + * 42: link (to other channel if any?) + * 44: type (1 = mono, 2 = mono right, 4 = mono left, others (0x8000) apparently for ROM presets?) + */ + while (i < cksize) + { + CHK_READ(chan, hdrbuf, 46); + i += 46; + type = mus_char_to_lshort((unsigned char *)(hdrbuf + 44)); + if ((type == 1) && + (mus_char_to_lint((unsigned char *)(hdrbuf + 24)) > 0)) + { + if (srate == 0) + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 36)); + soundfont_entry((char *)(hdrbuf), + mus_char_to_lint((unsigned char *)(hdrbuf + 20)), + this_end = mus_char_to_lint((unsigned char *)(hdrbuf + 24)), + mus_char_to_lint((unsigned char *)(hdrbuf + 28)), + mus_char_to_lint((unsigned char *)(hdrbuf + 32))); + if (this_end > last_end) last_end = this_end; + } + } + happy = (data_location == 0); + } + else + { + if (ckoff >= offset + 8 + chunksize) + break; + lseek(chan, ckoff, SEEK_SET); + } + } + } + else + { + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_sdta)) + { + /* assume smpl follows + subchunk size */ + /* Convert 1.4 appears to create a separate smpl chunk */ + data_location = offset + 20; /* LIST xxxx sdta smpl xxxx ... */ + happy = (srate == 0); + } + } + } + chunkloc = (8 + chunksize); + if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */ + } + if (srate == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: srate == 0", filename)); + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no sdta chunk?", filename)); + if (last_end > 0) + data_size = last_end; /* samples already */ + else data_size = (true_file_length - data_location) / 2; + return(MUS_NO_ERROR); +} + + + + +/* ------------------------------------ NIST ------------------------------------ + * + * code available in ogitools-v1.0.tar.gz at svr-ftp.eng.cam.ac.uk:comp.speech/sources + * + * 0: "NIST_1A" + * 8: data_location as ASCII representation of integer (apparently always " 1024") + * 16: start of complicated header -- see below for details + * + * The most recent version of the SPHERE package is available + * via anonymous ftp from jaguar.ncsl.nist.gov [129.6.48.157] in the pub directory + * in compressed tar form as "sphere-v.tar.Z" (where "v" is the version + * code 2.6a last I looked). shortpack is also at this site. + * + * here's an example: + * + * NIST_1A + * 1024 + * database_id -s5 TIMIT + * database_version -s3 1.0 + * utterance_id -s8 aks0_sa1 + * channel_count -i 1 + * sample_count -i 63488 + * sample_rate -i 16000 + * sample_min -i -6967 + * sample_max -i 7710 + * sample_n_bytes -i 2 + * sample_byte_format -s2 01 + * sample_sig_bits -i 16 + * end_head + * + * the sample_byte_format can be "10"=big-endian or "01"=little-endian, or "shortpack-v0"=compressed via shortpack + * other formats are wavpack and shorten. + * + * another field is 'sample_coding' which can be pcm (i.e. linear), 'pcm, embedded-shorten-v1.09', mu-law, alaw, ulaw, pculaw etc -- + * so unpredictable as to be totally useless. This means we sometimes try to decode shorten-encoded files because + * we ignore this field. And worse, there's a 'channels_interleaved' field that (apparently) can be false. Tough. + */ + +#define MAX_FIELD_LENGTH 80 + +static int decode_nist_value(char *str, int base, int end) +{ + /* can be -i -r or -snnn where nnn = ascii rep of integer = len of string (!) */ + /* we'll deal only with integer fields (and well-behaved string fields) */ + int i, j; + char value[MAX_FIELD_LENGTH]; + memset((void *)value, 0, MAX_FIELD_LENGTH); + i = base; + while ((i < end) && (i < MAX_FIELD_LENGTH) && (str[i] != '-')) i++; /* look for -i or whatever */ + while ((i < end) && (i < MAX_FIELD_LENGTH) && (str[i] != ' ')) i++; /* look for space after it */ + i++; + if (i >= MAX_FIELD_LENGTH) return(0); + for (j = 0; i < end; j++, i++) + value[j] = str[i]; + value[j] = 0; + if (value[0] =='s') return(MUS_NIST_SHORTPACK); + sscanf(value, "%d", &i); + return(i); +} + +static int read_nist_header(const char *filename, int chan) +{ + char str[MAX_FIELD_LENGTH], name[MAX_FIELD_LENGTH]; + bool happy = true; + off_t curbase; + int k, hend, j, n, nm, samples, bytes, byte_format, idata_location = 0; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); /* the actual id is "NIST_1A" */ + memset((void *)str, 0, MAX_FIELD_LENGTH); + memset((void *)name, 0, MAX_FIELD_LENGTH); + for (k = 8; k < 16; k++) + str[k - 8] = hdrbuf[k]; + sscanf(str, "%d", &idata_location); /* always "1024" */ + if (idata_location != 1024) + return(mus_error(MUS_HEADER_READ_FAILED, "%s NIST data location: %d?", filename, idata_location)); + data_location = 1024; + n = 16; + hend = INITIAL_READ_SIZE; + k = 0; + curbase = 0; + samples = 0; + bytes = 0; + srate = 0; + chans = 0; + comment_start = 16; + comment_end = 16; + byte_format = 10; + for (j = 0; j < MAX_FIELD_LENGTH; j++) + str[j] =' '; + while (happy) + { + /* much as in xIFF files, march through the file looking for the data we're after */ + /* in this case we munch a character at a time... */ + str[k] = hdrbuf[n]; + if ((((str[k] == '\0') || (str[k] == '\n')) || ((curbase + n + 1) >= data_location)) || (k == 79)) + { + /* got a complete record (assuming no embedded newlines, of course) */ + /* now look for a record we care about and decode it */ + nm = 0; + while ((nm < MAX_FIELD_LENGTH) && (str[nm] != ' ') && (str[nm] != '\0') && (str[nm] != '\n')) + { + name[nm] = str[nm]; + nm++; + } + if (nm >= MAX_FIELD_LENGTH) + { + header_type = MUS_RAW; + data_format = MUS_UNKNOWN; + return(mus_error(MUS_UNSUPPORTED_HEADER_TYPE, "%s nist header: unreadable field (length = %d)?", filename, nm)); + } + name[nm] = 0; + if (strcmp(name, "sample_rate") == 0) srate = decode_nist_value(str, nm, k); else + if (strcmp(name, "channel_count") == 0) chans = decode_nist_value(str, nm, k); else + if (strcmp(name, "end_head") == 0) {happy = false; comment_end = curbase + n - 9;} else + if (strcmp(name, "sample_count") == 0) samples = decode_nist_value(str, nm, k); else + if ((bytes == 0) && (strcmp(name, "sample_n_bytes") == 0)) bytes = decode_nist_value(str, nm, k); else + if ((bytes == 0) && (strcmp(name, "sample_sig_bits") == 0)) {bytes = decode_nist_value(str, nm, k); bytes = (bytes >> 3);} else + if (strcmp(name, "sample_byte_format") == 0) byte_format = decode_nist_value(str, nm, k); + for (j = 0; j <= k; j++) str[j] =' '; + k = 0; + if ((curbase + n + 1) > 1024) happy = false; + } + else + k++; + n++; + if (n >= hend) + { + int read_bytes; + curbase += hend; + n = 0; + read_bytes = read(chan, hdrbuf, HDRBUFSIZ); + if (read_bytes < HDRBUFSIZ) + return(mus_error(MUS_HEADER_READ_FAILED, "%s NIST header truncated?", filename)); + hend = HDRBUFSIZ; + } + } + data_size = samples * bytes; + if (byte_format == MUS_NIST_SHORTPACK) + { + data_format = MUS_UNKNOWN; + original_data_format = MUS_NIST_SHORTPACK; + } + else + { + switch (bytes) + { + case 1: data_format = MUS_MULAW; break; + case 2: + if (byte_format == 10) + data_format = MUS_BSHORT; + else data_format = MUS_LSHORT; + break; + case 3: + if (byte_format == 10) + data_format = MUS_B24INT; + else data_format = MUS_L24INT; + break; + case 4: + if (byte_format == 10) + data_format = MUS_BINT; + else data_format = MUS_LINT; + break; + default: data_format = MUS_BYTE; break; + } + } + true_file_length = SEEK_FILE_LENGTH(chan); + if ((data_size > true_file_length) && (original_data_format != MUS_NIST_SHORTPACK)) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + +static int write_nist_header(int chan, int wsrate, int wchans, int siz, int format) +{ + char *header; + int datum; + datum = mus_bytes_per_sample(format); + header = (char *)CALLOC(1024, sizeof(char)); + sprintf(header, "NIST_1A\n 1024\nchannel_count -i %d\nsample_rate -i %d\nsample_n_bytes -i %d\nsample_byte_format -s2 %s\nsample_sig_bits -i %d\nsample_count -i %d\nend_head\n", + wchans, wsrate, datum, + ((format == MUS_BSHORT) || (format == MUS_B24INT) || (format == MUS_BINT)) ? "10" : "01", + datum * 8, siz / datum); + CHK_WRITE(chan, (unsigned char *)header, 1024); + data_location = 1024; + FREE(header); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ BICSF ------------------------------------ + * (actually, this is EBICSF and the old BICSF is called IRCAM below) + * + * 0-28: NeXT-compatible header, read by read_next_header above. + * 28: bicsf magic number (107364 or trouble) + * 32: srate as a 32-bit float + * 36: chans + * 40: data format indicator (2 = 16-bit linear, 4 = 32-bit float) + * 44: begin chunks, if any + * + * followed by AIFF-style chunked header info with chunks like: + * + * COMM size comment + * MAXA size {max amps (up to 4)} (frame offsets) time-tag unix msec counter + * CUE, PRNT, ENV etc + * + * except in Paul Lansky's "hybrid" headers, according to MixViews. + */ + +static int read_bicsf_header(const char *filename, int chan) +{ + int chunksize, chunkname, offset, chunkloc; + bool happy; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 28)); + header_type = MUS_BICSF; + data_location = 1024; + if (data_size == 0) data_size = (true_file_length - data_location); + lseek(chan, 40, SEEK_SET); + CHK_READ(chan, hdrbuf, HDRBUFSIZ); + original_data_format = mus_char_to_bint((unsigned char *)hdrbuf); + switch (original_data_format) + { + case 2: data_format = MUS_BSHORT; break; + case 4: data_format = MUS_BFLOAT; break; + case 8: data_format = MUS_BDOUBLE; break; + default: break; + } + + /* now check for a COMM chunk, setting the comment pointers */ + chunkloc = 4; /* next header + magic number, srate, chans, packing, then chunks, I think */ + offset = 40; + happy = true; + while (happy) + { + if (((offset + chunkloc) >= data_location) || + ((offset + chunkloc) < 40)) + happy = false; + else + { + offset += chunkloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s bicsf header: chunks confused at %d", filename, offset)); + chunkname = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); + chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + if (match_four_chars((unsigned char *)hdrbuf, I_COMM)) + { + comment_start = 8 + offset; + comment_end = comment_start + chunksize -1; + happy = false; + } + else + { + if ((chunkname == 0) || (chunksize <= 0)) + happy = false; + } + chunkloc = (8 + chunksize); + } + } + return(MUS_NO_ERROR); + /* from here we fall back into read_next_header */ +} + + + +/* ------------------------------------ IRCAM ------------------------------------ + * read/write CLM (old-style BICSF) -- added write option for Sun port 12-Dec-94 + * + * 0: 0x1a364 or variations thereof -- byte order gives big/little_endian decision, + * ^ digit gives machine info, according to AFsp sources -- see IRCAM ints above + * 4: srate as a 32-bit float + * 8: chans + * 12: data format indicator (2 = 16-bit linear, 4 = 32-bit float) + * according to new Sox (version 11), these packing modes are now bytes/sample in low short, code in high + * so 1 = char, 0x10001 = alaw, 0x20001 = mulaw, 2 = short, 3 = 24bit?, 0x40004 = long, 4 = float (AFsp sez 4 can also be double) + * 16: comment start -- how to tell if it's a real comment? + * apparently these are separated as short code, short blocksize, then data + * codes: 0 = end, 1 = maxamp, 2 = comment, 3 = pvdata, 4 = audioencode and codemax?? + * 1024: data start + * + * apparently the byte order depends on the machine. + * and yet... convert 1.4 makes a .sf file with little endian header, the VAX id, and big endian data? + * Csound also uses the VAX magic number with little-endian unscaled floats! Argh. + * even worse, Paul Lansky plops some version of this at the end of a NeXT header! Complete chaos... + */ + +static int read_ircam_header(const char *filename, int chan) +{ + short bcode, bloc, bsize; + int offset; + bool little, happy; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); + if ((mus_char_to_lint((unsigned char *)hdrbuf) == I_IRCAM_VAX) || + (mus_char_to_lint((unsigned char *)hdrbuf) == I_IRCAM_MIPS)) + little = true; + else little = false; + little_endian = little; + data_location = 1024; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - 1024); + original_data_format = big_or_little_endian_int((unsigned char *)(hdrbuf + 12), little); + data_format = MUS_UNKNOWN; + if (original_data_format == 2) + { + if (little) + data_format = MUS_LSHORT; + else data_format = MUS_BSHORT; + } + else if (original_data_format == 4) + { + if (little) + { + if (mus_char_to_lint((unsigned char *)hdrbuf) == I_IRCAM_VAX) + data_format = MUS_LFLOAT_UNSCALED; /* Csound and MixViews */ + else data_format = MUS_LFLOAT; + } + else data_format = MUS_BFLOAT; + } + else if (original_data_format == 0x40004) + { + if (little) data_format = MUS_LINT; + else data_format = MUS_BINT; + } + else if (original_data_format == 0x10001) data_format = MUS_ALAW; + else if (original_data_format == 0x20001) data_format = MUS_MULAW; + else if (original_data_format == 1) data_format = MUS_BYTE; + else if (original_data_format == 3) + { + if (little) data_format = MUS_L24INT; + else data_format = MUS_B24INT; + } + else if (original_data_format == 8) + { + if (little) data_format = MUS_LDOUBLE; + else data_format = MUS_BDOUBLE; + } + srate = (int)big_or_little_endian_float((unsigned char *)(hdrbuf + 4), little); + chans = big_or_little_endian_int((unsigned char *)(hdrbuf + 8), little); + bloc = 16; + happy = true; + offset = 0; + while (happy) + { + offset += bloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s ircam header: chunks confused at %d", filename, offset)); + bcode = big_or_little_endian_short((unsigned char *)hdrbuf, little); + bsize = big_or_little_endian_short((unsigned char *)(hdrbuf + 2), little); + if (bcode == 2) + { + happy = false; + comment_start = 4 + offset; + comment_end = comment_start + bsize - 1; /* was -5? */ + } + bloc = bsize; + if ((bsize <= 0) || (bcode <= 0) || ((offset + bloc) > 1023)) happy = false; + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + +static int sndlib_format_to_ircam(int format) +{ + switch (format) + { + case MUS_MULAW: return(0x20001); break; + case MUS_ALAW: return(0x10001); break; + case MUS_BSHORT: return(2); break; + case MUS_BINT: return(0x40004); break; + case MUS_BFLOAT: return(4); break; + default: + return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "IRCAM header unsupported data format: %d (%s)", format, any_data_format_name(format))); + break; + } +} + +static void write_ircam_comment(int fd, const char *comment, int len) +{ + if (len > 0) + { + mus_bshort_to_char((unsigned char *)hdrbuf, 2); + mus_bshort_to_char((unsigned char *)(hdrbuf + 2), (short)len); + CHK_WRITE(fd, hdrbuf, 4); + CHK_WRITE(fd, (unsigned char *)comment, len); + } + else + { + mus_bint_to_char((unsigned char *)hdrbuf, 0); + CHK_WRITE(fd, hdrbuf, 4); + } + len = 1024 - (len + 20); + if (len > 0) + { + unsigned char *combuf; + combuf = (unsigned char *)CALLOC(len, sizeof(char)); + CHK_WRITE(fd, combuf, len); + FREE(combuf); + } +} + +static int write_ircam_header(int chan, int wsrate, int wchans, int format, const char *comment, int len) +{ + mus_bint_to_char((unsigned char *)hdrbuf, 0x2a364); /* SUN id */ + mus_bfloat_to_char((unsigned char *)(hdrbuf + 4), (float)wsrate); + mus_bint_to_char((unsigned char *)(hdrbuf + 8), wchans); + mus_bint_to_char((unsigned char *)(hdrbuf + 12), sndlib_format_to_ircam(format)); + CHK_WRITE(chan, hdrbuf, 16); + data_location = 1024; + write_ircam_comment(chan, comment, len); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ 8SVX ------------------------------------- + * (also known as IFF) + * + * very similar to AIFF: + * "BODY" => [4] samples [n] data + * "VHDR" => srate (short) + * "CHAN" => chans + * "ANNO" and "NAME" + * + * big_endian throughout + */ + +static int read_8svx_header(const char *filename, int chan, bool bytewise) +{ + int chunksize, offset, chunkloc; + bool happy; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); + chunkloc = 12; + offset = 0; + if (bytewise) data_format = MUS_BYTE; else data_format = MUS_BSHORT; + srate = 0; + chans = 1; + happy = true; + true_file_length = SEEK_FILE_LENGTH(chan); + update_form_size = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + while (happy) + { + offset += chunkloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s 8svx header: chunks confused at %d", filename, offset)); + chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + if ((chunksize == 0) && /* can be empty data chunk? */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + if (match_four_chars((unsigned char *)hdrbuf, I_CHAN)) + { + chans = mus_char_to_bint((unsigned char *)(hdrbuf + 8)); + chans = (chans & 0x01) + + ((chans & 0x02) >> 1) + + ((chans & 0x04) >> 2) + + ((chans & 0x08) >> 3); + /* what in heaven's name is this? Each bit corresponds to a channel? */ + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_VHDR)) + { + /* num_samples (int) at hdrbuf + 8 */ + srate = mus_char_to_ubshort((unsigned char *)(hdrbuf + 20)); + original_data_format = hdrbuf[23]; + if (original_data_format != 0) + data_format = MUS_UNKNOWN; + } + else + { + if ((match_four_chars((unsigned char *)hdrbuf, I_ANNO)) || + (match_four_chars((unsigned char *)hdrbuf, I_NAME))) + { + comment_start = offset + 8; + comment_end = comment_start + chunksize - 1; + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_BODY)) + { + data_size = chunksize; + data_location = offset + 12; + happy = false; + } + } + } + } + chunkloc = (8 + chunksize); + if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */ + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no BODY chunk?", filename)); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ VOC -------------------------------------- + * + * 0: "Creative Voice File" followed by a couple ctrl-Z ('32) (swapped data) + * 20: header end (short) {8svx, 26 = data_offset, 0x10a = version, ((~version + 0x1234) & 0xffff) = 0x1129} + * [20]: first block: + * block code, 1 = data, 0 = end, 9 = data_16 (2 = continue, 3 = silence, 4 = marker, 5 = text, 6 = loop, 7 = loop-end, 8 = extended) + * block len as 24 bit int(?) + * if data, then rate code (byte), then data (assuming 8-bit unsigned, mono) + * if data_16, long srate, byte: data size (8 or 16), byte chans + * if text, ascii text (a comment) + * if extended (8) precedes 1 (data): 8 4 then time constant (short), byte: packing code (0), byte chans (0 = mono) + * + * apparently always little_endian + * updated extensively 29-Aug-95 from sox10 voc.c + */ + +static int read_voc_header(const char *filename, int chan) +{ + off_t curbase; + int type, len, voc_extended, bits, code; + bool happy; + data_format = MUS_UBYTE; + chans = 1; + happy = true; + voc_extended = 0; + true_file_length = SEEK_FILE_LENGTH(chan); + curbase = mus_char_to_lshort((unsigned char *)(hdrbuf + 20)); + if (true_file_length < curbase) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: block location " OFF_TD " > file length: " OFF_TD, filename, curbase, true_file_length)); + lseek(chan, curbase, SEEK_SET); + CHK_READ(chan, hdrbuf, HDRBUFSIZ); + while (happy) + { + type = (int)(hdrbuf[0]); + len = (((int)hdrbuf[3]) << 16) + (((int)hdrbuf[2]) << 8) + (((int)hdrbuf[1])); + if (type == 1) /* voc_data */ + { + data_size = len - 1; /* was -3 */ + data_location = curbase + 6; + if (voc_extended == 0) + { + srate = (int)(1000000.0 / (256 - ((int)(hdrbuf[4] & 0xff)))); + original_data_format = hdrbuf[5]; + if (hdrbuf[5] == 0) + data_format = MUS_UBYTE; + else data_format = MUS_UNKNOWN; + } + happy = false; + } + else + { + if (type == 9) /* voc_data_16 */ + { + data_size = len - 1; /* was -3 */ + data_location = curbase + 6; + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + bits = ((int)hdrbuf[8]); + if (bits == 8) + { + code = mus_char_to_lshort((unsigned char *)(hdrbuf + 10)); + if (code == 6) + data_format = MUS_ALAW; + else + if (code == 7) + data_format = MUS_MULAW; + else data_format = MUS_UBYTE; + } + else + if (bits == 16) + data_format = MUS_LSHORT; + else data_format = MUS_UNKNOWN; + chans = (int)hdrbuf[9]; + if (chans == 0) chans = 1; + happy = false; + } + else + { + if (((len + curbase) < true_file_length) && (type != 0)) + { + if (type == 5) /* voc_text */ + { + comment_start = curbase + 4; + comment_end = comment_start + len - 1; + } + else + { + if (type == 8) /* voc_extended */ + { + srate = (256000000 / (65536 - mus_char_to_lshort((unsigned char *)(hdrbuf + 4)))); + if ((int)(hdrbuf[7]) == 0) chans = 1; else chans = 2; + if ((int)(hdrbuf[6]) != 0) data_format = MUS_UNKNOWN; + } + /* I'd add loop support here if I had any example sound files to test with */ + } + if (seek_and_read(chan, (unsigned char *)hdrbuf, curbase + len + 4, HDRBUFSIZ) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s voc header: ran off end of file", filename)); + curbase += len; + } + else happy = false; + } + } + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no data(type 1 or 9) chunk?", filename)); + if ((data_size > true_file_length) || (data_size < (off_t)(true_file_length / 10))) /* some VOC files seem to have completely bogus lengths */ + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ TwinVQ ------------------------------------ + * + * from Audio Tools Library (atl.zip) at http://jfaul.de/atl. + * a chunked header for proprietary (and apparently obsolete?) compressed data + * + * 0: "TWIN" + * 4: version id (string) + * 12: header size ["cardinal" -> bint] + * common chunk header (4 of ID, bint size) + * 24: channels (bint: 0=mono 1=stereo) + * bitrate (bint) + * 32: srate (bint khz 11, 22, 44 else *1000) + * security (bint 0) + * filesize (bint bytes) + * possible chunks: NAME COMT AUTH (c) FILE ALBM DATA + */ + +/* Monkey files start with "MAC ", but this is yet another compression-oriented format, I think (APE?) */ + +static int read_twinvq_header(const char *filename, int chan) +{ + data_format = MUS_UNKNOWN; + data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 12)) + 16 + 8; + chans = 1 + mus_char_to_bint((unsigned char *)(hdrbuf + 24)); + srate = mus_char_to_bint((unsigned char *)(hdrbuf + 32)); + if (srate == 11) srate = 11025; else + if (srate == 22) srate = 22050; else + if (srate == 44) srate = 44100; else + srate *= 1000; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + return(MUS_NO_ERROR); +} + + +static int read_sdif_header(const char *filename, int chan) +{ + /* yeah, right! */ + return(MUS_UNSUPPORTED); +} + +static int read_nvf_header(const char *filename, int chan) +{ + /* info from nvftools by Tom Mander: */ + /* + Numbers stored little-endian. + + bytes 0-3: "NVF " magic number + bytes 4-7: 0x00000001 NVF version number? + bytes 8-11: 0x00000020 size of rest of header + bytes 12-15: "VFMT" VFMT chunk h + bytes 16-19: 0x00000001 VFMT version number? + bytes 20-23: 0x00000014 size of reset of VFMT header + bytes 24-27: 0x00007D00 32000 bit/s bitrate + bytes 28-29: 0x0001 channels + bytes 30-31: 0x0000 unknown + bytes 32-35: 0x00001F40 8000kHz sample rate + bytes 36-39: 0x00003E80 16000 + bytes 40-41: 0x0002 width in bytes of uncompressed data? + bytes 42-43: 0x0010 width in bits of compressed data? + + The rest of the data is G.721 data nibble packing big-endian, 4bits per + sample (nibble) single channel at 32kbit. When the Nomad records an NVF + file it does it in 92 sample (46 byte) frames or 0.0115sec. + */ + if (mus_char_to_lint((unsigned char *)(hdrbuf + 4)) != 1) return(mus_error(MUS_HEADER_READ_FAILED, "%s: NVF[4] != 1", filename)); + if (!(match_four_chars((unsigned char *)(hdrbuf + 12), I_VFMT))) return(mus_error(MUS_HEADER_READ_FAILED, "%s: no VFMT chunk", filename)); + data_format = MUS_UNKNOWN; /* g721 --translate elsewhere */ + chans = 1; + srate = 8000; + data_location = 44; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location) * 2; /* 4 bit samps? */ + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ ADC ------------------------------------ + * also known as OGI format + * TIMIT format is identical except it omits the data format field (header size claims to be bytes) + * + * from ad.h and other files, ogitools-v1.0.tar.gz + * we'll look for the big/little endian sequence (short) 8 1 1-or-2 given big/little decision + * + * 0: header size in shorts (8 = 16 bytes) (OGI says this is in bytes) + * 2: version (1) + * 4: chans + * 6: rate (srate = 4000000/rate) + * 8: samples (int) -- seems to be off by 2 -- are they counting ints here? + * 12: data format (0 = big-endian) + * 16: data start +*/ + +static int read_adc_header(const char *filename, int chan) +{ + bool little; + little = (mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 12)) != 0); /* 0 = big endian */ + data_location = 16; + if (little) data_format = MUS_LSHORT; else data_format = MUS_BSHORT; + chans = big_or_little_endian_short((unsigned char *)(hdrbuf + 4), little); + srate = 4000000 / big_or_little_endian_short((unsigned char *)(hdrbuf + 6), little); + data_size = 2 * big_or_little_endian_int((unsigned char *)(hdrbuf + 8), little); + comment_start = 0; + comment_end = 0; + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ AVR -------------------------------------- + * + * 0: "2BIT" + * 4: sample name (null padded ASCII) + * 12: chans (short) (0 = mono, -1 = stereo) + * 14: sample size (8 or 16 bit) (short) (value is 8, 12, or 16) + * 16: sample format (signed or unsigned) (short) (0 = unsigned, -1 = signed) + * 18: loop (on/off), 20: midi (-1 = no MIDI) + * 22: srate + * avr.txt has: + * 22: Replay speed 0 = 5.485 Khz, 1 = 8.084 Khz, 2 = 10.971 Khz, 3 = 16.168 Khz, 4 = 21.942 Khz, 5 = 32.336 Khz, 6 = 43.885 Khz, 7 = 47.261 Khz + * 23: sample rate in Hertz (as a 3 byte quantity??) + * 26: length in samples + * 30: loop beg, 34: loop end, 38: midi (keyboard split), 40: compression, 42: nada ("reserved"), 44: name + * 64: comment (limited to 64 bytes) + * 128: data start + * + * the Atari .avr files appear to be 8000 Hz, mono, 8-bit linear unsigned data with an unknown header of 128 words + * apparently there was a change in format sometime in the 90's. + * + * The actual avr files I've found on the net are either garbled, or + * something is wrong with this definition (taken from CMJ and www.wotsit.org's avr.txt). + * SGI dmconvert assumes big-endian here -- this is an Atari format, so it's probably safe to assume big-endian. + */ + +static int read_avr_header(const char *filename, int chan) +{ + int dsize, dsigned, i; + chans = mus_char_to_bshort((unsigned char *)(hdrbuf + 12)); + if (chans == 0) chans = 1; else if (chans == -1) chans = 2; else return(mus_error(MUS_HEADER_READ_FAILED, "%s chans: %d", filename, chans)); + data_location = 128; + data_size = mus_char_to_bint((unsigned char *)(hdrbuf + 26)); + srate = mus_char_to_ubshort((unsigned char *)(hdrbuf + 24)); + dsize = mus_char_to_bshort((unsigned char *)(hdrbuf + 14)); + dsigned = mus_char_to_bshort((unsigned char *)(hdrbuf + 16)); + if (dsize == 16) + { + if (dsigned == 0) + data_format = MUS_UBSHORT; + else data_format = MUS_BSHORT; + } + else + { + if (dsize == 8) + { + if (dsigned == 0) + data_format = MUS_UBYTE; + else data_format = MUS_BYTE; + } + else return(mus_error(MUS_HEADER_READ_FAILED, "%s: unknown data format", filename)); + } + if (seek_and_read(chan, (unsigned char *)hdrbuf, 64, 64) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s avr header: ran off end of file", filename)); + comment_start = 64; + i = 0; + while ((i < 64) && (hdrbuf[i] != 0)) i++; + comment_end = 64 + (i - 1); + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + + +/* ------------------------------------ SNDT ------------------------------------- + * + * this taken from sndrtool.c (sox-10): (modified 6-Feb-98) + * 0: "SOUND" (or off by two throughout if not "0x1a"?) + * 5: 0x1a + * 6-7: 0 + * 8-11: nsamps (at 12) + * 12-15: 0 + * 16-19: nsamps + * 20-21: srate (little endian short) (at 22) + * 22-23: 0 + * 24-25: 10 + * 26-27: 4 + * 28-> : <filename> "- File created by Sound Exchange" + * .->95: 0 ? + */ + +/* similar is Sounder format: + * 0: 0 + * 2: short srate (little endian) + * 4: 10 + * 6: 4 + * then data + * but this format can't be distinguished from a raw sound file + */ + +static int read_sndt_header(const char *filename, int chan) +{ + if (hdrbuf[4] != 'D') return(mus_error(MUS_HEADER_READ_FAILED, "%s: SNDT[4] != 'D'", filename)); + data_format = MUS_UBYTE; + chans = 1; + srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 20)); + data_location = 126; + data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8)); + if (data_size < 0) data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 10)); + if (srate <= 1) srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 22)); + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Covox v8 ------------------------------------- + * + * 0: 377 125 377 252 377 125 377 252 x x 0's to 16 + * then 8-bit unsigned data + */ + +static int read_covox_header(const char *filename, int chan) +{ + data_format = MUS_UBYTE; + chans = 1; + data_location = 16; + srate = 8000; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ SMP ------------------------------------- + * + * 0: "SOUND SAMPLE DATA " + * 18: "2.1 " + * 22-81: comment + * 82-111: sample name + * header 112 bytes + * long samples (bytes = samples*2) + * then data start + * data + * always little endian + */ + +static int read_smp_header(const char *filename, int chan) +{ + data_format = MUS_LSHORT; + chans = 1; + comment_start = 22; + comment_end = 81; + data_location = 116; + lseek(chan, 112, SEEK_SET); + if (read(chan, hdrbuf, 4) != 4) return(mus_error(MUS_HEADER_READ_FAILED, "%s: SMP header truncated?", filename)); + data_size = (mus_char_to_lint((unsigned char *)hdrbuf)); + data_format = MUS_LSHORT; /* just a guess */ + srate = 8000; /* docs mention an srate floating around at the end of the file, but I can't find it in any example */ + true_file_length = SEEK_FILE_LENGTH(chan); + if ((data_size * 2) > true_file_length) + { + data_size = (true_file_length - data_location) / 2; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ SPPACK ------------------------------------- + * + * from AF docs: + * Bytes Type Contents + * 0 160 char Text strings (2 * 80) + * 160 80 char Command line + * 240 2 int Domain (1-time, 2-freq, 3-qfreq) + * 242 2 int Frame size + * 244 4 float Sampling frequency + * 252 2 int File identifier (i.e. #o100 #o303) + * 254 2 int Data type (0xfc0e = sampled data file) + * 256 2 int Resolution (in bits 8, 16) + * 258 2 int Companding flag + * 272 240 char Text strings (3 * 80) + * 512 ... -- Audio data + * + * at least one program is writing these headers using little endian data... + */ + +static int read_sppack_header(const char *filename, int chan) +{ + int typ, bits; + data_location = 512; + chans = 1; + lseek(chan, 240, SEEK_SET); + if (read(chan, hdrbuf, 22) != 22) return(mus_error(MUS_HEADER_READ_FAILED, "%s SPPACK header truncated?", filename)); + typ = mus_char_to_bshort((unsigned char *)hdrbuf); + data_format = MUS_UNKNOWN; + if (typ == 1) + { + if (((hdrbuf[254]) == 252) && ((hdrbuf[255]) == 14)) /* #xfc and #x0e */ + { + float sr; + typ = mus_char_to_bshort((unsigned char *)(hdrbuf + 18)); + bits = mus_char_to_bshort((unsigned char *)(hdrbuf + 16)); + sr = mus_char_to_bfloat((unsigned char *)(hdrbuf + 4)); + srate = (int)sr; + switch (typ) + { + case 1: if (bits == 16) data_format = MUS_BSHORT; else data_format = MUS_BYTE; break; + case 2: data_format = MUS_ALAW; break; + case 3: data_format = MUS_MULAW; break; + default: data_format = MUS_UNKNOWN; break; + } + data_size = SEEK_FILE_LENGTH(chan); + data_size = mus_bytes_to_samples(data_format, data_size - 512); + comment_start = 0; + comment_end = 0; + } + } + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + if (data_size > mus_bytes_to_samples(data_format, true_file_length)) + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ ESPS (Entropic Signal Processing System) ------------------------------------- + * + * specs at ftp.entropic.com (also known as "SD" format) + * from AFgetInfoES.c: + * + * Bytes Type Contents + * 8 -> 11 -- Header size (bytes) + * 12 -> 15 int Sampled data record size + * 16 -> 19 int File identifier: 0x00006a1a or 0x1a6a0000 + * 40 -> 65 char File creation date + * 124 -> 127 int Number of samples + * 132 -> 135 int Number of doubles in a data record + * 136 -> 139 int Number of floats in a data record + * 140 -> 143 int Number of longs in a data record + * 144 -> 147 int Number of shorts in a data record + * 148 -> 151 int Number of chars in a data record + * 160 -> 167 char User name + * 333 -> H-1 -- "Generic" header items, including "record_freq" {followed by a "double8"=64-bit ?} + * H -> ... -- Audio data + */ + +static int read_esps_header(const char *filename, int chan) +{ + char str[80]; + bool happy = true; + off_t curbase, hend; + int k, j, n, chars, floats, shorts, doubles, bytes; + bool little; + little = (hdrbuf[18] == 0); + if (little) + data_location = mus_char_to_lint((unsigned char *)(hdrbuf + 8)); + else data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 8)); + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 8000; + chans = 1; + lseek(chan, 132, SEEK_SET); + CHK_READ(chan, hdrbuf, HDRBUFSIZ); + if (little) + { + doubles = mus_char_to_lint((unsigned char *)hdrbuf); + floats = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + shorts = mus_char_to_lint((unsigned char *)(hdrbuf + 12)); + chars = mus_char_to_lint((unsigned char *)(hdrbuf + 16)); + } + else + { + doubles = mus_char_to_bint((unsigned char *)hdrbuf); + floats = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + shorts = mus_char_to_bint((unsigned char *)(hdrbuf + 12)); + chars = mus_char_to_bint((unsigned char *)(hdrbuf + 16)); + } + if (shorts != 0) + { + data_format = ((little) ? MUS_LSHORT : MUS_BSHORT); + chans = shorts; + } + else + { + if (doubles != 0) + { + data_format = ((little) ? MUS_LDOUBLE_UNSCALED : MUS_BDOUBLE_UNSCALED); + chans = doubles; + } + else + { + if (floats != 0) + { + data_format = ((little) ? MUS_LFLOAT_UNSCALED : MUS_BFLOAT_UNSCALED); + chans = floats; + } + else + { + if (chars != 0) + { + data_format = MUS_BYTE; /* ?? */ + chans = chars; + } + } + } + } + /* search for "record_freq" to get srate */ + lseek(chan, 333, SEEK_SET); + CHK_READ(chan, hdrbuf, HDRBUFSIZ); + curbase = 333; + hend = curbase + HDRBUFSIZ; + k = 0; + n = 0; + for (j = 0; j < 80; j++) str[j] =' '; + while (happy) + { + str[k] = hdrbuf[n]; + if ((str[k] == 'q') || (str[k] == 3) || ((curbase + n + 1) >= data_location) || (k == 78)) + { /* 3 = C-C marks end of record (?) */ + str[k + 1] = 0; + if (strcmp(str, "record_freq") == 0) + { + if (seek_and_read(chan, (unsigned char *)hdrbuf, curbase + n, 32) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s esps header: ran off end of file", filename)); + n = 0; + if (little) + srate = (int)mus_char_to_ldouble((unsigned char *)(hdrbuf + 8)); + else srate = (int)mus_char_to_bdouble((unsigned char *)(hdrbuf + 8)); + happy = false; + } + if ((curbase + n + 1) >= data_location) happy = false; + k = 0; + } + else + k++; + n++; + if (n >= hend) + { + curbase += hend; + n = 0; + bytes = read(chan, hdrbuf, HDRBUFSIZ); + if (bytes != HDRBUFSIZ) break; + hend = HDRBUFSIZ; + } + } + if (srate == 0) srate = 8000; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ INRS ------------------------------------- + * + * from AFgetInfoIN.c: + * + * INRS-Telecommunications audio file: + * Bytes Type Contents + * 0 -> 3 float Sampling Frequency (VAX float format) + * 6 -> 25 char Creation time (e.g. Jun 12 16:52:50 1990) + * 26 -> 29 int Number of speech samples in the file (? -- old INRS files omit this) + * The data in an INRS-Telecommunications audio file is in 16-bit integer (little-endian) + * format. Header is always 512 bytes. Always mono. + * + */ + +static int inrs_srates[NINRS] = {6500, 6667, 8000, 10000, 12000, 16000, 20000}; + +static int read_inrs_header(const char *filename, int chan, int loc) +{ + true_file_length = SEEK_FILE_LENGTH(chan); + comment_start = 6; + comment_end = 25; + data_format = MUS_LSHORT; + srate = loc; + chans = 1; + data_location = 512; + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ MAUD ------------------------------------- + * + * very similar to AIFF: + * "MHDR" => 4: chunksize (32) + * 8: samples + * 12: bits + * 14: ditto + * 16: clock freq + * 20: clock div (srate = freq/div) + * 22: chan info (0 = mono, 1 = stereo) + * 24: ditto(?!) + * 26: format (0 = unsigned 8 or signed 16 (see bits), 2 = alaw, 3 = mulaw) + * 28-40: unused + * "MDAT" => data + * "ANNO" => comment + */ + +static int read_maud_header(const char *filename, int chan) +{ + int chunksize, offset, chunkloc; + bool happy; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); + chunkloc = 12; + offset = 0; + data_format = MUS_BYTE; + srate = 0; + chans = 1; + happy = true; + update_form_size = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + while (happy) + { + offset += chunkloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s maud header: chunks confused at %d", filename, offset)); + chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + if ((chunksize == 0) && /* can be empty data chunk? */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + if (match_four_chars((unsigned char *)hdrbuf, I_MHDR)) + { + int num, den; + data_size = mus_char_to_bint((unsigned char *)(hdrbuf + 8)); + num = mus_char_to_bint((unsigned char *)(hdrbuf + 16)); + den = mus_char_to_bshort((unsigned char *)(hdrbuf + 20)); + if (den == 0) den = 1; + srate = (int)(num / den); + num = mus_char_to_bshort((unsigned char *)(hdrbuf + 12)); + den = mus_char_to_bshort((unsigned char *)(hdrbuf + 26)); + if (num == 8) + { + switch (den) + { + case 0: data_format = MUS_UBYTE; break; + case 2: data_format = MUS_ALAW; break; + case 3: data_format = MUS_MULAW; break; + default: data_format = MUS_UNKNOWN; break; + } + } + else data_format = MUS_BSHORT; + num = mus_char_to_bshort((unsigned char *)(hdrbuf + 22)); + if (num == 0) chans = 1; else chans = 2; + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_ANNO)) + { + comment_start = offset + 8; + comment_end = comment_start + chunksize - 1; + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_MDAT)) + { + data_location = offset + 12; + happy = false; + } + } + } + chunkloc = (8 + chunksize); + if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */ + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no MDAT chunk?", filename)); + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ CSL ------------------------------------- + * + * "Computerized Speech Labs -- this info taken from wavesurfer/snack + * + * very similar to AIFF: + * 0: FORM + * 4: DS16 (kinda weird) + * 8: size (int le) + * 12: chunks + * HEDR or HDR8 + * 4: size (int) + * samp: short, chans: 1 at 36 if not (int) -1, chans: 2? + * srate at 28 (le int?) + * other chunks: SD_B, SDA_ SDAB with data bytes as data followed by data + */ + +static int read_csl_header(const char *filename, int chan) +{ + int chunksize, offset, chunkloc; + bool happy; + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); + chunkloc = 12; + offset = 0; + data_format = MUS_LSHORT; + srate = 0; + chans = 1; + happy = true; + update_form_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8)); + while (happy) + { + offset += chunkloc; + if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 64) <= 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s csl header: chunks confused at %d", filename, offset)); + chunksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + if ((chunksize == 0) && /* can be empty data chunk? */ + (hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0)) + break; + if ((match_four_chars((unsigned char *)hdrbuf, I_HEDR)) || + (match_four_chars((unsigned char *)hdrbuf, I_HDR8))) + { + /* 8..20: date as ascii */ + /* 32: data length (int) in bytes */ + if ((mus_char_to_lshort((unsigned char *)(hdrbuf + 36)) != -1) && /* these are maxamps, -1=none */ + (mus_char_to_lshort((unsigned char *)(hdrbuf + 38)) != -1)) + chans = 2; + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 28)); + } + else + { + if (match_four_chars((unsigned char *)hdrbuf, I_NOTE)) + { + comment_start = offset + 8; + comment_end = comment_start + chunksize - 1; + } + else + { + if ((match_four_chars((unsigned char *)hdrbuf, I_SDA_)) || + (match_four_chars((unsigned char *)hdrbuf, I_SDAB)) || + (match_four_chars((unsigned char *)hdrbuf, I_SD_B))) + { + data_location = offset + 8; + data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 4)); + happy = false; + } + } + } + chunkloc = (8 + chunksize); + if (chunksize & 1) chunkloc++; + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no SDxx chunk?", filename)); + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ snack SMP ------------------------------------- + * + * there's apparently yet another "smp" format (from nist??) + * file = samp + * sftot = 22050 + * msb = last + * nchans = 1 + * preemph = none + * born = snack + * msb = last here -> little endian? + * data at 1024 + */ + +static int read_file_samp_header(const char *filename, int chan) +{ + int i = 0; + char *locbuf; + data_location = 1024; + chans = 1; + srate = 8000; + data_format = MUS_LSHORT; + lseek(chan, 10, SEEK_SET); + locbuf = (char *)CALLOC(1024, sizeof(char)); + CHK_READ(chan, locbuf, 1024); + while (i < 1024) + { + if (strncmp((char *)(locbuf + i), "sftot", 5) == 0) + sscanf((const char *)(&locbuf[i + 6]), "%d", &srate); + if (strncmp((char *)(locbuf + i), "nchans", 6) == 0) + sscanf((const char *)(&locbuf[i + 7]), "%d", &chans); + if (strncmp((char *)(locbuf + i), "msb", 3) == 0) + if (strncmp((char *)(locbuf + i + 4), "first", 5) == 0) + data_format = MUS_BSHORT; + while ((i < 1024) && (locbuf[i] != 10) && (locbuf[i] != 0)) i++; + i++; + } + FREE(locbuf); + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Sound Designer I ------------------------------------- + * + * complicated and defined in terms of Pascal records, so the following is a stab in the dark: + * + * 0: 1336 (i.e. header size) + * 764: comment (str255) + * 1020: sample rate (long) + * 1028: data size (short) + * 1030: a code string describing the data type (i.e. "linear") (str32) + * 1064: user comment (str255) + * + * file type: 'SFIL' + * + * always big_endian + */ + +static int read_sd1_header(const char *filename, int chan) +{ + int n; + chans = 1; + data_location = 1336; + lseek(chan, 1020, SEEK_SET); + if (read(chan, hdrbuf, 64) != 64) return(mus_error(MUS_HEADER_READ_FAILED, "%s Sound Designer I header truncated?", filename)); + srate = mus_char_to_bint((unsigned char *)hdrbuf); + n = mus_char_to_bshort((unsigned char *)(hdrbuf + 8)); + if (n == 16) + data_format = MUS_BSHORT; + else data_format = MUS_BYTE; + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + n = ((unsigned char)hdrbuf[44]); + if (n != 0) + { + comment_start = 1064; + comment_end = comment_start + n - 1; + } + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ PSION alaw ------------------------------------- + * + * 0: "ALawSoundFile**" + * 16: version + * 18: length (bytes) + * 22: padding + * 24: repeats + * 26-32: nada + * 32: data + * + * always mono 8-bit alaw 8000 Hz. All the examples on the psion net site appear to be little endian. + */ + +static int read_psion_header(const char *filename, int chan) +{ + if ((hdrbuf[13] != '*') || (hdrbuf[14] != '*')) return(mus_error(MUS_HEADER_READ_FAILED, "%s: PSION[13, 14] != '*'", filename)); + chans = 1; + data_location = 32; + srate = 8000; + data_format = MUS_ALAW; + data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 18)); /* always little-endian? */ + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ Gravis Ultrasound Patch ------------------------------------- + * + * http://www.gravis.com/Public/sdk/PATCHKIT.ZIP + * + * header [128], instruments [62], layers [49], waveheaders (nested) + * always little endian, actual files don't match exactly with any documentation + * + * Header block: + * 0: "GF1PATCH100" or "GF1PATCH110" + * 12: "ID#000002" + * 22: comment (copyright notice) (60 bytes ASCIZ) + * 82: number of instruments + * 83: number of voices + * 84: wave channels + * 85: number of waves + * 87: vol + * 89: size? + * 93: reserved (36? bytes) + * + * Instrument block: + * 0: id + * 2: name (16 bytes) + * 18: size + * 22: number of layers + * 23: reserved (40? bytes) + * + * Layer block: + * 0: "previous" + * 1: id + * 2: size + * 6: number of wave samples + * 10: reserved (40? bytes) + * + * Wave block: + * 0: name (7 bytes ASCIZ) + * 7: "fractions" + * 8: data size of wave sample + * 12: loop start + * 16: loop end + * 20: sample rate + * 22: low freq + * 26: high freq + * 30: root freq + * 34: tune + * 36: balance + * 37: envelope data (6+6 bytes I think) + * 49: tremolo and vibrato data (6 bytes) + * 55: mode bit 0: 8/16, 1: signed/unsigned + * 56: scale freq + * 58: scale factor + * 60: reserved (36 bytes) + * followed by data presumably + */ + +static int read_gravis_header(const char *filename, int chan) +{ + int mode; + lseek(chan, 0, SEEK_SET); + if (read(chan, hdrbuf, 128) != 128) return(mus_error(MUS_HEADER_READ_FAILED, "%s PAT header truncated?", filename)); + chans = hdrbuf[84]; + if (chans == 0) chans = 1; + comment_start = 22; + comment_end = 81; + lseek(chan, 239, SEEK_SET); /* try to jump to wave sample block (128+62+49) */ + CHK_READ(chan, hdrbuf, 128); + srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 20)); + data_size = mus_char_to_ulshort((unsigned char *)(hdrbuf + 8)); + mode = hdrbuf[55]; + if (mode & 1) + { + if (mode & 2) + data_format = MUS_ULSHORT; + else data_format = MUS_LSHORT; + } + else + { + if (mode & 2) + data_format = MUS_UBYTE; + else data_format = MUS_BYTE; + } + data_location = 337; + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ Goldwave ------------------------------------- + * + * http://web.cs.mun.ca/~chris3/goldwave/goldwave.html + */ + +static int read_goldwave_header(const char *filename, int chan) +{ + chans = 1; + data_location = 28; + data_format = MUS_LSHORT; + data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 22)); + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + if ((data_size <= 24) || (data_size > true_file_length)) + data_size = (true_file_length - data_location) / 2; + else data_size /= 2; + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 18)); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Sonic Resource Foundry ------------------------------------- + * + * more reverse engineering... + * http://www.sfoundry.com/ + */ + +static int read_srfs_header(const char *filename, int chan) +{ + chans = 1; /* might be short at header[4] */ + data_location = 32; + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = (true_file_length - data_location) / 2; + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 6)); + data_format = MUS_LSHORT; + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Quicktime ------------------------------------- + * + * infinitely complicated -- see Quicktime File Format doc from Apple. + * there's no relation between this document and actual files -- a bizarre joke? + */ + +static int read_qt_header(const char *filename, int chan) +{ + chans = 1; + data_location = 12; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 11025; /* ?? */ + data_format = MUS_UBYTE; + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ SBStudioII ------------------------------------- + * + * from a file created by Convert 1.4 + * 0: SND <space> + * 8: file size - 8 + * SNNA SNIN SNDT blocks: + * + * built in blocks, other names are SNIN, SNDT + * need to scan for SNDT, block length, data + * SNNA len name + * supposedly ends with END (but my examples don't) + * SNIN: + * num (2), reserved (2), tuning (1), vol (2), type (2) bit 0: 1 = PCM, bit 1: 1 = 16, 0 = 8 (then loop data) + * info from Pac.txt (pac.zip) at http://www.wotsit.org/music.htm + */ + +static int read_sbstudio_header(const char *filename, int chan) +{ + int i, tmp; + bool happy; + unsigned char *bp; + lseek(chan, 0, SEEK_SET); + CHK_READ(chan, hdrbuf, HDRBUFSIZ); + chans = 1; + srate = 8000; /* no sampling rate field in this header */ + data_format = MUS_UNKNOWN; + true_file_length = SEEK_FILE_LENGTH(chan); + happy = true; + i = 8; + bp = (unsigned char *)(hdrbuf + 8); + while (happy) + { + if (match_four_chars(bp, I_SNDT)) + { + data_size = mus_char_to_lint((unsigned char *)(bp + 4)); + data_location = i + 8; + happy = false; + } + else + { + if (match_four_chars(bp, I_SNIN)) + { + tmp = mus_char_to_lshort((unsigned char *)(bp + 15)); + if ((tmp & 1) == 0) + data_format = MUS_UNKNOWN; + else + { + if ((tmp & 2) == 0) + data_format = MUS_BYTE; + else data_format = MUS_LSHORT; + } + i += 26; + bp += 26; + } + else + { + if (match_four_chars(bp, I_SNNA)) + { + tmp = mus_char_to_lint((unsigned char *)(bp + 4)); + i += tmp; + bp += tmp; + } + else + { + i++; + bp++; + } + } + } + if (i >= HDRBUFSIZ) + { + data_format = MUS_UNKNOWN; + happy = false; + } + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no SNDT chunk?", filename)); + if ((data_size == 0) || (data_format == MUS_UNKNOWN)) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data size or format bogus", filename)); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Delusion Sound ------------------------------------- + * + * more reverse engineering... + * from a file created by Convert 1.4 + * 0: DDSF + * 5: name (text) + * 55: data + * probaby similar to DMF format described in Dmf-form.txt but I don't see any other block names in the data + */ + +static int read_delusion_header(const char *filename, int chan) +{ + if ((hdrbuf[4] != 1) || (hdrbuf[5] > 128) || (hdrbuf[6] > 128) || (hdrbuf[7] > 128)) + return(mus_error(MUS_HEADER_READ_FAILED, "%s DDSF name bogus", filename)); + chans = 1; + data_location = 55; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 8000; + data_format = MUS_LSHORT; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ Farandole Composer WaveSample ------------------------------------- + * + * 0: FSM 254 + * libmodplug load_far.cpp uses: #define FARFILEMAGIC 0xFE524146 ("FAR="?) + * 4: name (text) (32 bytes) + * 36: 10, 13, 26 or something like that + * 39: len? + * 40: volume + * 41: looping data + * 49: type (0 = 8-bit, else 16) + * 50: loop mode + * 51: data + * described in Fsm.txt and Far-form.txt http://www.wotsit.org/music.htm + */ + +static int read_farandole_header(const char *filename, int chan) +{ + chans = 1; + data_location = 51; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 8000; + if (hdrbuf[49] == 0) + data_format = MUS_BYTE; + else data_format = MUS_LSHORT; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ Yamaha TX-16W ------------------------------------- + * + * ftp://ftp.t0.or.at/pub/sound/tx16w/samples.yamaha + * ftp://ftp.t0.or.at/pub/sound/tx16w/faq/tx16w.tec + * http://www.t0.or.at/~mpakesch/tx16w/ + * + * from tx16w.c sox 12.15: (7-Oct-98) (Mark Lakata and Leigh Smith) + * char filetype[6] "LM8953" + * nulls[10], + * dummy_aeg[6] + * format 0x49 = looped, 0xC9 = non-looped + * sample_rate 1 = 33 kHz, 2 = 50 kHz, 3 = 16 kHz + * atc_length[3] if sample rate 0, [2]&0xfe = 6: 33kHz, 0x10:50, 0xf6: 16, depending on [5] but to heck with it + * rpt_length[3] (these are for looped samples, attack and loop lengths) + * unused[2] + */ + +static int read_tx16w_header(const char *filename, int chan) +{ + if ((hdrbuf[4] != '5') || (hdrbuf[5] != '3')) return(mus_error(MUS_HEADER_READ_FAILED, "%s TX16 magic number bogus", filename)); + chans = 1; + data_location = 32; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 16000; + if (hdrbuf[23] == 1) srate = 33000; + else if (hdrbuf[23] == 2) srate = 50000; + else if (hdrbuf[23] == 3) srate = 16000; + else if (hdrbuf[23] == 0) + { + if ((hdrbuf[26] & 0xFE) == 6) srate = 33000; + else if ((hdrbuf[26] & 0xFE) == 0x10) srate = 50000; + else if ((hdrbuf[26] & 0xFE) == 0xf6) srate = 16000; + } + original_data_format = MUS_UNKNOWN; + data_format = MUS_UNKNOWN; + data_size = (off_t)((double)data_size / 1.5); + if (hdrbuf[22] == 0x49) + { + loop_modes[0] = 1; + loop_starts[0] = ((hdrbuf[26] & 1) << 16) + (hdrbuf[25] << 8) + hdrbuf[24]; + loop_ends[0] = loop_starts[0] + ((hdrbuf[29] & 1) << 16) + (hdrbuf[28] << 8) + hdrbuf[27]; + } + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Yamaha SY-85 and SY-99 ------------------------------------- + * + * more reverse engineering... + * 0: SY85 (SY80 is SY-99) SY85ALL SY80 SYALL + * 5: name ("WAVE1") + * (26 int len) + * (33: comment or prompt?) + * data in 16-bit little endian (?) + */ + +static int read_sy85_header(const char *filename, int chan) +{ + if ((hdrbuf[4] != ' ') && (hdrbuf[4] != 'A')) return(mus_error(MUS_HEADER_READ_FAILED, "%s: unknown magic number", filename)); + chans = 1; + data_location = 1024; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 8000; /* unknown */ + data_format = MUS_BSHORT; /* not right */ + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Kurzweil 2000 ------------------------------------- + * + * "PRAM" then header len as big endian int?? + * from krz2tx.c (Mark Lakata) + */ +static int read_kurzweil_2000_header(const char *filename, int chan) +{ + chans = 1; + data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 4)); + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 44100; /* unknown */ + data_format = MUS_BSHORT; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Korg ------------------------------------- + * + * "SMP1" -- guessing on the rest + */ +static int read_korg_header(const char *filename, int chan) +{ + chans = 1; + data_location = 70; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = mus_char_to_bint((unsigned char *)(hdrbuf + 48)); + data_format = MUS_BSHORT; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Maui ------------------------------------- + * + * "Maui" -- guessing on the rest + */ +static int read_maui_header(const char *filename, int chan) +{ + lseek(chan, 420, SEEK_SET); + if (read(chan, hdrbuf, 64) != 64) return(mus_error(MUS_HEADER_READ_FAILED, "%s truncated maui header?", filename)); + chans = 1; + data_location = 776; + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8)); + if ((data_size * 2) > true_file_length) + data_size = (true_file_length - data_location) / 2; + srate = mus_char_to_lint((unsigned char *)(hdrbuf)); + data_format = MUS_LSHORT; + return(MUS_NO_ERROR); +} + +/* ------------------------------------ Impulse Tracker ------------------------------------- + * + * data from its2raw.c by Ben Collver + * 0: IMPS + * 4: filename (12 bytes) + * 17: global vol + * 18: flags (1: 16-bit or 8(0), 2: stereo or mono(0) + * 19: default vol + * 20: sample name (26 bytes) + * 46: convert + * 47: default pan + * 48: length (samps) + * 52: loop start + * 56: loop end + * 60: srate + * 64: sustain loop start + * 68: sustain loop end + * 72: data location + * 76: vib speed + * 77: vib depth + * 78: vib wave + * 79: vib rate + */ +static int read_impulsetracker_header(const char *filename, int chan) +{ + if (hdrbuf[18] & 4) chans = 2; else chans = 1; + if (hdrbuf[18] & 2) data_format = MUS_LSHORT; else data_format = MUS_BYTE; + data_location = mus_char_to_lint((unsigned char *)(hdrbuf + 72)); + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = (true_file_length - data_location); + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 60)); + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + +#if 0 +/* ------------------------------------ AKAI 3? ------------------------------------- + */ +static int read_akai3_header(const char *filename, int chan) +{ + chans = 1; + data_location = 192; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + if (hdrbuf[1] == 0) srate = 22050; else srate = 44100; + data_format = MUS_LSHORT; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} +#endif + + +/* ------------------------------------ AKAI 4 ------------------------------------- + * + * 1, 4, info from Paul Kellet -- lost the url ("MPC-2000") + */ +static int read_akai4_header(const char *filename, int chan) +{ + chans = hdrbuf[21] + 1; + data_location = 42; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 40)); + data_format = MUS_LSHORT; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ PVF (portable voice format) ------------------------------------- + * + * info from mgetty-voice-1.1.22/voice/libpvf/lib.c + * this is a modem-related interchange format + * + * PVF1\n + * 1 11025 32\n + * then data + * PVF1 = binary data, PVF2 = ascii + * chans | srate | sample size + */ + +static int read_pvf_header(const char *filename, int chan) +{ + char *buf; + int bits, i; + if (hdrbuf[4] != '\n') return(mus_error(MUS_HEADER_READ_FAILED, "PVF header messed up")); + type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); + buf = (char *)(hdrbuf + 5); + sscanf(buf, "%d %d %d", &chans, &srate, &bits); + if (chans < 1) chans = 1; + if (srate < 0) srate = 8000; + if (bits < 8) bits = 8; + for (i = 6; i < INITIAL_READ_SIZE; i++) + if (hdrbuf[i] == '\n') + { + data_location = i + 1; + break; + } + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s PVF header bad data location", filename)); + if (match_four_chars((unsigned char *)hdrbuf, I_PVF2)) + { + data_format = MUS_UNKNOWN; /* ascii text */ + return(mus_error(MUS_HEADER_READ_FAILED, "%s PVF header unknown data format", filename)); + } + /* big endian data -- they're using htonl etc */ + if (bits == 8) + data_format = MUS_BYTE; + else + if (bits == 16) + data_format = MUS_BSHORT; + else data_format = MUS_BINT; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Ultratracker WaveSample ------------------------------------- + * + * 0..31: name (32 = ctrl-Z?) + * 33: PMUWFD (but docs say this is "dos name" -- perhaps we can't recognize this header type reliably) + * 44: 4 ints giving loop and size data + * 60: vol + * 61: "bidi" 0|8|24->8 bit else 16 -- but actual example has 0 with 16-bit + * 62: finetune + * 64: data (or 68?) + * described in Ult-form.txt http://www.wotsit.org/music.htm + */ + +static int read_ultratracker_header(const char *filename, int chan) +{ + chans = 1; + data_location = 64; + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + data_size = (true_file_length - data_location); + srate = 8000; + data_format = MUS_LSHORT; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ Sample dump exchange ------------------------------------- + * + * 0: SDX: + * sdx2tx.c (Mark Lakata) reads from 4 for 26 (^z), then + * version (1) + * comment as pascal-style string (byte len, bytes chars) + * then 23 bytes: + * 0: packing (0 = pcm) + * 1: midi channel + * 2 + 256*[3]: sample number + * 4: sample format (15: 16 bit unsigned(?), 8: 8bit unsigned(?) + * 5: sample rate (big int?) + * 9: sample length + * 13: loop start + * 17: loop end + * 21: loop type + * 22: reserved + */ + +static int read_sample_dump_header(const char *filename, int chan) +{ + int i, len; + for (i = 4; i < HDRBUFSIZ; i++) if (hdrbuf[i] == 26) break; + len = hdrbuf[i + 2]; + if (len > 0) + { + comment_start = i + 3; + comment_end = i + 3 + len; + } + seek_and_read(chan, (unsigned char *)hdrbuf, i + 3 + len, HDRBUFSIZ); + srate = mus_char_to_lint((unsigned char *)(hdrbuf + 5)); + loop_modes[0] = 0; + if (hdrbuf[21] == 0) + { + loop_modes[0] = 1; + loop_starts[0] = mus_char_to_lint((unsigned char *)(hdrbuf + 13)); + loop_ends[0] = mus_char_to_lint((unsigned char *)(hdrbuf + 17)); + } + /* data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 9)); */ + if ((srate < 100) || (srate > 100000)) srate = 8000; + chans = 1; + data_location = i + 3 + len + 23; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + if (hdrbuf[0] == 0) + data_format = MUS_ULSHORT; + else data_format = MUS_UNKNOWN; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Digiplayer ST3 ------------------------------------- + * + * 0: 1 (use 'SCRS' at 76) + * 1: name + * 13: nada + * 14: "paragraph" offset of sample data + * 16: length in bytes (looks like #samples in the actual files...) + * 20: loop start + * 24: loop end + * 28: vol + * 29: ? + * 30: 0 = unpacked, 1 = DP30ADPCM + * 31: bits: 0 = loop, 1 = stereo (chans not interleaved!), 2 = 16-bit samples (little endian) + * 32: freq + * 36: nada + * 40: nada + * 42: 512 + * 44: date? + * 48: sample name (28 char ASCIZ) + * 76: 'SCRS' + * 80: data starts + * + * info from http://www.wotsit.org/ S3m-form.txt + */ + +static int read_digiplayer_header(const char *filename, int chan) +{ + chans = 1; + data_location = 80; + true_file_length = SEEK_FILE_LENGTH(chan); + data_size = (true_file_length - data_location); + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + srate = 8000; + data_format = MUS_ULSHORT; + if (hdrbuf[30] & 2) chans = 2; + if (hdrbuf[30] & 1) + data_format = MUS_UNKNOWN; + else + { + if (hdrbuf[30] & 4) data_format = MUS_UBYTE; /* may be backwards -- using Convert 1.4 output here */ + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ CSRE adf ------------------------------------- + * + * Info from Stuart Rosen + * + * 0-7: CSRE40 + * 8: samples in file (long) + * 12: center line(?) (long) + * 16: start channel(?) (unsigned) + * 18: bits -- 12 or 16 (unsigned) -- is 12 bit sample file packed? + * 20: number system (0 = signed, 1 = unsigned) + * 22: srate in kHz (float) + * 26: peak sample in file (long) (can be 0) + * 30-511: comment possibly + * + * probably always little-endian (S.R. reads each sample using sizeof(int) -> 16 bits I think) + * if 12-bit unsigned we need to handle the offset somewhere + */ + +static int read_adf_header(const char *filename, int chan) +{ + int bits, numsys; + lseek(chan, 0, SEEK_SET); + if ((hdrbuf[4] != '4') || (hdrbuf[5] != '0')) return(mus_error(MUS_HEADER_READ_FAILED, "%s csre header bad magic number", filename)); + if (read(chan, hdrbuf, 30) != 30) return(mus_error(MUS_HEADER_READ_FAILED, "%s csre header truncated?", filename)); + chans = 1; + numsys = mus_char_to_ulshort((unsigned char *)(hdrbuf + 20)); + bits = mus_char_to_ulshort((unsigned char *)(hdrbuf + 18)); + if ((bits == 16) || (bits == 12)) + { + if (numsys == 0) + data_format = MUS_LSHORT; + else data_format = MUS_ULSHORT; + } + else data_format = MUS_UNKNOWN; + srate = (int)(1000 * mus_char_to_lfloat((unsigned char *)(hdrbuf + 22))); + data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8)); + data_location = 512; + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + if (data_size > mus_bytes_to_samples(data_format, true_file_length - data_location)) + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ Diamondware ------------------------------------- + * + * info from Keith Weiner at DiamondWare (www.dw.com): + * + * 0-22: DWD Header Byte "DiamondWare Digitized\n\0" + * 23: 1A (EOF to abort printing of file) + * 24: Major version number + * 25: Minor version number + * 26-29: Unique sound ID (checksum XOR timestamp) + * 30: Reserved + * 31: Compression type (0 = none) + * 32-33: Sampling rate (in Hz) + * 34: Number of channels (1 = mono, 2 = stereo) (interleaved) + * 35: Number of bits per sample (8, 16) (all data signed) + * 36-37: Absolute value of largest sample in file + * 38-41: length of data section (in bytes) + * 42-45: # samples (16-bit stereo is 4 bytes/sample) + * 46-49: Offset of data from start of file (in bytes) + * 50-53: Reserved for future expansion (markers) + * 54-55: Padding + * 56:offset -- additional text: field = value + * suggested fields: TITLE, ORGARTIST, GENRE, KEYWORDS, ORGMEDIUM, EDITOR, DIGITIZER, COMMENT, SUBJECT, COPYRIGHT, SOFTWARE, CREATEDATE + * + * since this is all Windows/DOS oriented, I'll assume little-endian byte order. + */ + +static int read_diamondware_header(const char *filename, int chan) +{ + lseek(chan, 0, SEEK_SET); + if (read(chan, hdrbuf, 64) != 64) return(mus_error(MUS_HEADER_READ_FAILED, "%s truncated diamondware header?", filename)); + chans = hdrbuf[34]; + if (hdrbuf[31] == 0) + { + if (hdrbuf[35] == 8) data_format = MUS_BYTE; + else data_format = MUS_LSHORT; + } + else + { + data_format = MUS_UNKNOWN; + return(mus_error(MUS_HEADER_READ_FAILED, "%s unknown data format", filename)); + } + srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 32)); + data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 38)); + data_location = mus_char_to_lint((unsigned char *)(hdrbuf + 46)); + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + if (data_size > true_file_length - data_location) + data_size = true_file_length - data_location; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + +/* ------------------------------------ Ensoniq Paris ------------------------------------- + * _paf -> Ensoniq Paris? (this info from libaudiofile) + * 0 paf (or fap) + * 4 version (0) + * 8 endianess (0 = big) + * 12 rate (unsigned int) + * 16 format (0: 16-bit linear, 24-bit linear) + * 20 channels + * 24 source (an encoded comment) + * 2048 data (24 bit files are compressed) + */ + +static int read_paf_header(const char *filename, int chan) +{ + int form; + bool little = false; + lseek(chan, 0, SEEK_SET); + if (read(chan, hdrbuf, 32) != 32) return(mus_error(MUS_HEADER_READ_FAILED, "%s PAF header truncated?", filename)); + data_format = MUS_UNKNOWN; + if (mus_char_to_bint((unsigned char *)(hdrbuf + 8))) little = true; + if (little) + { + srate = mus_char_to_ulint((unsigned char *)(hdrbuf + 12)); + form = mus_char_to_ulint((unsigned char *)(hdrbuf + 16)); + if (form == 0) data_format = MUS_LSHORT; + if (form == 2) data_format = MUS_BYTE; + chans = mus_char_to_ulint((unsigned char *)(hdrbuf + 20)); + } + else + { + srate = mus_char_to_ubint((unsigned char *)(hdrbuf + 12)); + form = mus_char_to_ubint((unsigned char *)(hdrbuf + 16)); + if (form == 0) data_format = MUS_BSHORT; + if (form == 2) data_format = MUS_BYTE; + chans = mus_char_to_ubint((unsigned char *)(hdrbuf + 20)); + } + data_location = 2048; + true_file_length = SEEK_FILE_LENGTH(chan); + if (true_file_length < data_location) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length)); + if (data_format != MUS_UNKNOWN) + data_size = mus_bytes_to_samples(data_format, true_file_length - 2048); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ Comdisco SPW ------------------------------------- + * info from AFsp libtsp/AF/nucleus/AFgetSWpar.c + * + * header is text as in NIST: + * + * $SIGNAL_FILE 9\n (12 chars) + * $USER_COMMENT + * <comment line(s)> + * $COMMON_INFO + * SPW Version = 3.10 + * System Type = <machine> (e.g. "sun4", "hp700") + * Sampling Frequency = <Sfreq> (e.g. "8000") + * Starting Time = 0 + * $DATA_INFO + * Number of points = <Nsamp> (e.g. "2000") + * Signal Type = <type> ("Double", "Float", "Fixed-point", "Integer", "Logical") + * Fixed Point Format = <16, 0, t> <16, 16, t> <8, 8, t> <8, 0, t> (optional) + * Complex Format = Real_Imag (optional) + * $DATA <data_type> ("ASCII", "BINARY") + * + * the fixed point <n, m, b> is decoded as n = number of bits total per sample, m = integer bits, b = t: signed, u: unsigned + * if $DATA ASCII, data is ascii text as in IEEE text files. + * There are other complications as well. We'll just hack up a stop-gap until someone complains. + */ + +static int read_comdisco_header(const char *filename, int chan) +{ + /* need to grab a line at a time, call strcmp over and over. This is very tedious. */ + char *line = NULL; + int i, j, k, m, n, curend, offset, len, type, d_size = 0; + bool happy = true, little, commenting; + k = 15; + line = (char *)CALLOC(256, sizeof(char)); + little = false; + offset = 0; + type = 0; + srate = 0; + curend = INITIAL_READ_SIZE; + commenting = false; + while (happy) + { + for (i = 0; i < 256; i++) + { + if (k == curend) + { + offset += curend; + if (read(chan, hdrbuf, HDRBUFSIZ) != HDRBUFSIZ) + { + FREE(line); + return(mus_error(MUS_HEADER_READ_FAILED, "%s comdisco header truncated?", filename)); + } + k = 0; + curend = HDRBUFSIZ; + } + if (hdrbuf[k] == '\n') + { + k++; + break; + } + line[i] = hdrbuf[k++]; + } + line[i] = '\0'; + if ((strcmp(line, "$DATA BINARY") == 0) || + (strcmp(line, "$DATA ASCII") == 0)) + { + happy = false; + data_location = offset + k; + } + if (strcmp(line, "$USER_COMMENT") == 0) + { + comment_start = offset + k; + commenting = true; + } + else + { + if (commenting) + { + if (line[0] == '$') + { + comment_end = offset + k - 2 - strlen(line); + commenting = false; + } + } + } + if (line[0] != '$') + { + char portion[32]; + char value[32]; + len = strlen(line); + for (j = 0; j < 8; j++) + portion[j] = line[j]; + portion[8] ='\0'; + for (j = 8; j < len; j++) + if (line[j] == '=') + break; + for (n = 0, m = j + 2; m < len; m++, n++) + value[n] = line[m]; + value[n] ='\0'; + if (strcmp(portion, "Sampling") == 0) sscanf(value, "%d", &srate); else + if (strcmp(portion, "Number o") == 0) sscanf(value, "%d", &d_size); else + if (strcmp(portion, "Signal T") == 0) {if (value[1] == 'o') type = 2; else if (value[1] == 'l') type = 1;} else + if (strcmp(portion, "Fixed Po") == 0) {if (value[1] == '8') type = 3;} + } + } + /* now clean up this mess */ + if (data_location == 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: no $DATA BINARY field?", filename)); + if (srate == 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: srate == 0", filename)); + chans = 1; + if (d_size != 0) data_size = (off_t)d_size; + switch (type) + { + case 0: if (little) data_format = MUS_LSHORT; else data_format = MUS_BSHORT; break; + case 1: if (little) data_format = MUS_LFLOAT; else data_format = MUS_BFLOAT; break; + case 2: if (little) data_format = MUS_LDOUBLE; else data_format = MUS_BDOUBLE; break; + case 3: data_format = MUS_BYTE; break; + } + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > mus_bytes_to_samples(data_format, true_file_length - data_location)) + data_size = mus_bytes_to_samples(data_format, true_file_length - data_location); + FREE(line); + return(MUS_NO_ERROR); +} + + +/* ------------------------------------ MS ASF ------------------------------------- + * + * asf format is described at http://www.microsoft.com/asf/specs.htm + * http://www.microsoft.com/asf/spec3/ASF0198ps.exe + * + * this header is completely insane + */ + +static int read_asf_header(const char *filename, int chan) +{ + /* a chunked data format, so not really acceptable here or elsewhere -- needs to be unchunked */ + int len, ilen = 0, i, j, bits = 0; + bool asf_huge = false, present; + /* apparently "huge" has some meaning in Windoze C */ + len = mus_char_to_lint((unsigned char *)(hdrbuf + 16)); /* actually 64 bits */ + i = (128+64) / 8; + srate = 0; + chans = 0; + while (i < len) + { + seek_and_read(chan, (unsigned char *)hdrbuf, i, HDRBUFSIZ); + if ((unsigned int)(hdrbuf[1]) == 0x29) + switch (hdrbuf[0]) + { + case 0xd0: + asf_huge = (hdrbuf[((128+64+128+64+64+64+64+32)/8)] & 2); + break; + case 0xd4: + present = ((hdrbuf[16+8+16+8+8+ 4+4+4+4+ 4+4] >> 3) & 0x3); + if (present) + j = 16+8+16+8+8+ 4+4+4+4+ 4+4+ 4+ (4+4+4) + 2; + else j = 16+8+16+8+8+ 4+4+4+4+ 4+4+ 4+ 2; + srate = mus_char_to_lint((unsigned char *)(hdrbuf + j+11+36)); + bits = mus_char_to_lint((unsigned char *)(hdrbuf + j+11+32)); + chans = mus_char_to_ulshort((unsigned char *)(hdrbuf + j+65)); + original_data_format = mus_char_to_lint((unsigned char *)(hdrbuf + j+11)); + break; + default: break; + } + ilen = mus_char_to_lint((unsigned char *)(hdrbuf + 16)); + if (ilen <= 0) break; + if ((chans > 0) && (srate > 0)) break; + i += ilen; + } + i = len; + seek_and_read(chan, (unsigned char *)hdrbuf, i, HDRBUFSIZ); + data_format = MUS_UNKNOWN; + if (((unsigned int)(hdrbuf[1]) == 0x29) && ((unsigned int)(hdrbuf[0]) == 0xd2)) + { + int a_huge = 2; + ilen = mus_char_to_lint((unsigned char *)(hdrbuf + 16)); + if (asf_huge) a_huge = 4; + data_location = i + 20 + a_huge + 2+4+3+1; + if (bits == 0) bits = 8; + data_format = wave_to_sndlib_format(original_data_format, bits, true); + } + else return(mus_error(MUS_HEADER_READ_FAILED, "%s: unknown data format", filename)); + data_size = ilen - data_location; + true_file_length = SEEK_FILE_LENGTH(chan); + if (data_size > true_file_length) + { + data_size = true_file_length - data_location; + if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size)); + } + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + + + +/* ------------------------------------ no header ------------------------------------- */ + +static int header_raw_srate = 44100; +static int header_raw_chans = 2; +static int header_raw_format = MUS_BSHORT; + +static int read_no_header(const char *filename, int chan) +{ + srate = header_raw_srate; + chans = header_raw_chans; + data_format = header_raw_format; + data_location = 0; + data_size = SEEK_FILE_LENGTH(chan); + true_file_length = data_size; + data_size = mus_bytes_to_samples(data_format, data_size); + return(MUS_NO_ERROR); +} + +void mus_header_set_raw_defaults(int sr, int chn, int frm) +{ + if (sr > 0) header_raw_srate = sr; + if (chn > 0) header_raw_chans = chn; + if (MUS_DATA_FORMAT_OK(frm)) header_raw_format = frm; +} + +void mus_header_raw_defaults(int *sr, int *chn, int *frm) +{ + (*sr) = header_raw_srate; + (*chn) = header_raw_chans; + (*frm) = header_raw_format; +} + + +/* ------------------------------------ all together now ------------------------------------ */ + +static int mus_header_read_1(const char *filename, int chan) +{ + /* returns 0 on success (at least to the extent that we can report the header type), -1 for error */ + int i, loc = 0, bytes; + bool happy; + header_type = MUS_UNSUPPORTED; + data_format = MUS_UNKNOWN; + comment_start = 0; + comment_end = 0; + data_size = 0; + data_location = 0; + if (loop_modes) + { + loop_modes[0] = 0; + loop_modes[1] = 0; + } + bytes = read(chan, hdrbuf, INITIAL_READ_SIZE); + /* if it's a 0 length file we need to get out */ + if (bytes < 0) + return(mus_error(MUS_HEADER_READ_FAILED, "%s: %s", filename, (errno) ? STRERROR(errno) : "bytes read < 0?")); + if (bytes == 0) + { + header_type = MUS_RAW; + srate = header_raw_srate; + chans = header_raw_chans; + data_format = header_raw_format; + data_location = 0; + true_file_length = 0; + return(MUS_NO_ERROR); + } + if (bytes < 4) + { + header_type = MUS_RAW; + return(read_no_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_DSND)) || + (match_four_chars((unsigned char *)hdrbuf, I_DECN))) + { + if (bytes < 24) + return(mus_error(MUS_HEADER_READ_FAILED, "%s NeXT header truncated? found only %d bytes", filename, bytes)); + header_type = MUS_NEXT; + return(read_next_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_FORM)) + { + /* next 4 bytes are apparently the file size or something equally useless */ + if (bytes < 12) + return(mus_error(MUS_HEADER_READ_FAILED, "%s AIFF header truncated? found only %d bytes", filename, bytes)); + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_AIFF)) + { + header_type = MUS_AIFF; + return(read_aiff_header(filename, chan, 0)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_AIFC)) + { + header_type = MUS_AIFC; + return(read_aiff_header(filename, chan, 0)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_8SVX)) + { + header_type = MUS_SVX; + return(read_8svx_header(filename, chan, true)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_16SV)) + { + header_type = MUS_SVX; + return(read_8svx_header(filename, chan, false)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_MAUD)) + { + header_type = MUS_MAUD; + return(read_maud_header(filename, chan)); + } + /* apparently SAMP here -> sampled audio data (?) */ + + if (match_four_chars((unsigned char *)(hdrbuf + 4), I_DS16)) + { + header_type = MUS_CSL; + return(read_csl_header(filename, chan)); + } + return(mus_error(MUS_HEADER_READ_FAILED, "%s: unrecognized \"FORM\" (i.e. AIFF) header", filename)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_RIFF)) || + (match_four_chars((unsigned char *)hdrbuf, I_RIFX))) + { + if (bytes < 12) + return(mus_error(MUS_HEADER_READ_FAILED, "%s RIFF header truncated? found only %d bytes", filename, bytes)); + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_WAVE)) + { + header_type = MUS_RIFF; + return(read_riff_header(filename, chan)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_sfbk)) + { + header_type = MUS_SOUNDFONT; + return(read_soundfont_header(filename, chan)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 8), I_AVI_)) + { + header_type = MUS_AVI; + return(read_avi_header(filename, chan)); + } + return(mus_error(MUS_HEADER_READ_FAILED, "%s: unrecognized \"RIFF\" (i.e. 'wave') header", filename)); + } + if ((equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_VAX)) || + (equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_SUN)) || + (equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_MIPS)) || + (equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_NEXT))) + { + if (bytes < 24) + return(mus_error(MUS_HEADER_READ_FAILED, "%s IRCAM header truncated? found only %d bytes", filename, bytes)); + header_type = MUS_IRCAM; + return(read_ircam_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_NIST)) + { + header_type = MUS_NIST; + return(read_nist_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SOUN)) + { + if ((match_four_chars((unsigned char *)(hdrbuf + 4), I_D_SA)) && + (match_four_chars((unsigned char *)(hdrbuf + 8), I_MPLE))) + { + header_type = MUS_SMP; + return(read_smp_header(filename, chan)); + } + else + { + header_type = MUS_SNDT; + return(read_sndt_header(filename, chan)); + } + } + if ((match_four_chars((unsigned char *)hdrbuf, I_VOC0)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I_VOC1))) + { + if (bytes < 24) + return(mus_error(MUS_HEADER_READ_FAILED, "%s VOC header truncated? found only %d bytes", filename, bytes)); + header_type = MUS_VOC; + return(read_voc_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_AVR_)) + { + header_type = MUS_AVR; + return(read_avr_header(filename, chan)); + } + if (mus_char_to_bshort((unsigned char *)hdrbuf) == 1336) + { + header_type = MUS_SD1; + return(read_sd1_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_ALaw)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I_Soun))) + { + header_type = MUS_PSION; + return(read_psion_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_GF1P)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I_ATCH))) + { + header_type = MUS_GRAVIS; + return(read_gravis_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_DSIG)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I_NAL_))) + { + header_type = MUS_COMDISCO; + return(read_comdisco_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_GOLD)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I__WAV))) + { + header_type = MUS_GOLDWAVE; + return(read_goldwave_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_Diam)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I_ondW))) + { + header_type = MUS_DIAMONDWARE; + return(read_diamondware_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SRFS)) + { + header_type = MUS_SRFS; + return(read_srfs_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_CSRE)) + { + header_type = MUS_ADF; + return(read_adf_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_fLaC)) + { + header_type = MUS_FLAC; + return(MUS_NO_ERROR); + } + if (match_four_chars((unsigned char *)hdrbuf, I_OggS)) + { + if ((hdrbuf[29] == 'v') && (hdrbuf[30] == 'o') && (hdrbuf[31] == 'r')) + header_type = MUS_OGG; + else + { + if ((hdrbuf[28] == 'S') && (hdrbuf[29] == 'p') && (hdrbuf[30] == 'e')) + header_type = MUS_SPEEX; + } + return(MUS_NO_ERROR); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_file)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I__sam))) + { + header_type = MUS_FILE_SAMP; + return(read_file_samp_header(filename, chan)); + } + if ((hdrbuf[0] == 0xf0) && (hdrbuf[1] == 0x7e) && (hdrbuf[3] == 0x01)) + { + header_type = MUS_MIDI_SAMPLE_DUMP; + chans = 1; + srate = (int)(1.0e9 / (float)((hdrbuf[7] + (hdrbuf[8] << 7) + (hdrbuf[9] << 14)))); + data_size = (hdrbuf[10] + (hdrbuf[11] << 7) + (hdrbuf[12] << 14)); + /* since this file type has embedded blocks, we have to translate it elsewhere */ + return(MUS_NO_ERROR); + } + /* no recognized magic number at start -- poke around in possible header for other types */ + /* ESPS is either 0x00006a1a or 0x1a6a0000 at byte 16 */ + if (equal_big_or_little_endian((unsigned char *)(hdrbuf + 16), 0x00006a1a)) + { + header_type = MUS_ESPS; + return(read_esps_header(filename, chan)); + } + lseek(chan, 0, SEEK_SET); + CHK_READ(chan, hdrbuf, 256); + if ((hdrbuf[252] == 64) && (hdrbuf[253] == 195)) /* #o100 and #o303 */ + { + header_type = MUS_SPPACK; + return(read_sppack_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)(hdrbuf + 65), I_FSSD)) && + (match_four_chars((unsigned char *)(hdrbuf + 128), I_HCOM))) + { + header_type = MUS_HCOM; + return(MUS_NO_ERROR); + } + happy = false; + for (i = 0; i < NINRS; i++) + { + if (equal_big_or_little_endian((unsigned char *)hdrbuf, I_INRS[i])) + { + happy = true; + loc = inrs_srates[i]; + } + } + if (happy) + { + header_type = MUS_INRS; + return(read_inrs_header(filename, chan, loc)); + } + if (mus_char_to_ubint((unsigned char *)hdrbuf) == 0xAAAAAAAA) + { + header_type = MUS_MUS10; + return(MUS_NO_ERROR); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_SPIB)) || + (match_four_chars((unsigned char *)hdrbuf, I_S___))) + { + header_type = MUS_IEEE; + return(MUS_NO_ERROR); + } + if (match_four_chars((unsigned char *)hdrbuf, I_riff)) + { + header_type = MUS_SOUNDFORGE; + return(read_soundforge_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I_PVF1)) || + (match_four_chars((unsigned char *)hdrbuf, I_PVF2))) + { + header_type = MUS_PVF; + return(read_pvf_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_MThd)) + { + header_type = MUS_MIDI; + return(MUS_ERROR); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SND_)) + { + header_type = MUS_SBSTUDIOII; + return(read_sbstudio_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_FSMt)) + { + header_type = MUS_FARANDOLE; + return(read_farandole_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SDXc)) + { + header_type = MUS_SAMPLE_DUMP; + return(read_sample_dump_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_DDSF)) + { + header_type = MUS_DELUSION; + return(read_delusion_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_LM89)) + { + header_type = MUS_YAMAHA_TX16W; + return(read_tx16w_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SY85)) + { + header_type = MUS_YAMAHA_SY85; + return(read_sy85_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SY80)) + { + header_type = MUS_YAMAHA_SY99; + return(read_sy85_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_PRAM)) + { + header_type = MUS_KURZWEIL_2000; + return(read_kurzweil_2000_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SMP1)) + { + header_type = MUS_KORG; + return(read_korg_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_Maui)) + { + header_type = MUS_MAUI; + return(read_maui_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_IMPS)) + { + header_type = MUS_IMPULSETRACKER; + return(read_impulsetracker_header(filename, chan)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 35), I_UWFD)) + { + header_type = MUS_ULTRATRACKER; + return(read_ultratracker_header(filename, chan)); + } + if (match_four_chars((unsigned char *)(hdrbuf + 76), I_SCRS)) + { + header_type = MUS_DIGIPLAYER; + return(read_digiplayer_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_covox)) + { + header_type = MUS_COVOX; + return(read_covox_header(filename, chan)); + } + if ((match_four_chars((unsigned char *)hdrbuf, I__PAF)) || + (match_four_chars((unsigned char *)hdrbuf, I_FAP_))) + { + header_type = MUS_PAF; + return(read_paf_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_TWIN)) + { + header_type = MUS_TWINVQ; + return(read_twinvq_header(filename, chan)); + } +#if MUS_LITTLE_ENDIAN + if (mus_char_to_uninterpreted_int((unsigned char *)hdrbuf) == 0x01000800) +#else + if (mus_char_to_uninterpreted_int((unsigned char *)hdrbuf) == 0x00080001) +#endif + { + header_type = MUS_ADC; + return(read_adc_header(filename, chan)); + } + + if ((match_four_chars((unsigned char *)hdrbuf, I_ones)) && + (match_four_chars((unsigned char *)(hdrbuf + 12), I_FORM))) + { + /* possibly an OMF file with an embedded AIFF data file -- this is just a guess... */ + header_type = MUS_OMF; + return(read_aiff_header(filename, chan, 12)); + /* another (apparently) along these lines is TOC */ + } + + if ((match_four_chars((unsigned char *)hdrbuf, I_zeros)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I_mdat))) + { + /* possibly quicktime?? */ + header_type = MUS_QUICKTIME; + return(read_qt_header(filename, chan)); + } + if ((hdrbuf[0] == 1) && (hdrbuf[1] == 4)) /* name follows --check? */ + { + header_type = MUS_AKAI4; + return(read_akai4_header(filename, chan)); + } +#if 0 + if ((hdrbuf[0] == 3) && (hdrbuf[16] == 128)) + { + header_type = MUS_AKAI4; + return(read_akai3_header(filename, chan)); + } +#endif + if ((match_four_chars((unsigned char *)hdrbuf, I_asf0)) && + (match_four_chars((unsigned char *)(hdrbuf + 4), I_asf1)) && + (match_four_chars((unsigned char *)(hdrbuf + 8), I_asf2)) && + (match_four_chars((unsigned char *)(hdrbuf + 12), I_asf3))) + { + header_type = MUS_ASF; + return(read_asf_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_SDIF)) + { + header_type = MUS_SDIF; + return(read_sdif_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_NVF_)) + { + header_type = MUS_NVF; + return(read_nvf_header(filename, chan)); + } + if (match_four_chars((unsigned char *)hdrbuf, I_ajkg)) + { + header_type = MUS_SHORTEN; + return(MUS_NO_ERROR); + } + if (match_four_chars((unsigned char *)hdrbuf, I_TTA1)) + { + header_type = MUS_TTA; + return(MUS_NO_ERROR); + } + if (match_four_chars((unsigned char *)hdrbuf, I_wvpk)) + { + header_type = MUS_WAVPACK; + return(MUS_NO_ERROR); + } + + header_type = MUS_RAW; + return(read_no_header(filename, chan)); +} + +static int local_error_type = MUS_NO_ERROR; +static char *local_error_msg = NULL; +static mus_error_handler_t *old_error_handler; + +static void local_mus_error(int type, char *msg) +{ + local_error_type = type; + if (local_error_msg) + free(local_error_msg); + if (msg) + local_error_msg = strdup(msg); + else local_error_msg = NULL; +} + +int mus_header_read(const char *name) +{ + int chan, err = 0; + chan = mus_file_open_read(name); + if (chan == -1) + return(mus_error(MUS_CANT_OPEN_FILE, "can't open %s: %s", name, STRERROR(errno))); + old_error_handler = mus_error_set_handler(local_mus_error); + err = mus_header_read_1(name, chan); + mus_error_set_handler(old_error_handler); + CLOSE(chan, name); + if (err != MUS_NO_ERROR) + return(mus_error(local_error_type, local_error_msg)); /* pass error info on up the chain now that we've cleaned up the open file descriptor */ + return(err); +} + +static mus_header_write_hook_t *mus_header_write_hook = NULL; + +mus_header_write_hook_t *mus_header_write_set_hook(mus_header_write_hook_t *new_hook) +{ + mus_header_write_hook_t *old_hook; + old_hook = mus_header_write_hook; + mus_header_write_hook = new_hook; + return(old_hook); +} + +int mus_header_write(const char *name, int type, int in_srate, int in_chans, off_t loc, off_t size_in_samples, int format, const char *comment, int len) +{ + /* the "loc" arg is a mistake -- just always set it to 0 */ + int chan, err = MUS_NO_ERROR; + off_t siz; + chan = mus_file_create(name); + if (chan == -1) + return(mus_error(MUS_CANT_OPEN_FILE, "can't write %s: %s", name, STRERROR(errno))); + if (mus_header_write_hook) + (*mus_header_write_hook)(name); + siz = mus_samples_to_bytes(format, size_in_samples); + /* no mus_error calls within any of the write functions */ + switch (type) + { + case MUS_NEXT: err = mus_header_write_next_header(chan, in_srate, in_chans, loc, siz, format, comment, len); break; + case MUS_AIFC: err = write_aif_header(chan, in_srate, in_chans, siz, format, comment, len, true); break; + case MUS_AIFF: err = write_aif_header(chan, in_srate, in_chans, siz, format, comment, len, false); break; + case MUS_RIFF: err = write_riff_header(chan, in_srate, in_chans, siz, format, comment, len); break; + case MUS_IRCAM: err = write_ircam_header(chan, in_srate, in_chans, format, comment, len); break; + case MUS_NIST: err = write_nist_header(chan, in_srate, in_chans, siz, format); break; + case MUS_RAW: + data_location = 0; + data_size = mus_bytes_to_samples(format, siz); + srate = in_srate; + chans = in_chans; + header_type = MUS_RAW; + data_format = format; + break; + default: + CLOSE(chan, name); + return(mus_error(MUS_UNSUPPORTED_HEADER_TYPE, "can't write %s header for %s", mus_header_type_name(type), name)); + break; + } + CLOSE(chan, name); + return(err); +} + +int mus_header_change_data_size(const char *filename, int type, off_t size) /* in bytes */ +{ + /* the read header at sample update (sound-close) time could be avoided if the + * ssnd_location (etc) were saved and passed in -- perhaps an added optimized + * header change data size? Means saving the relevant data, and exporting it + * from headers.c. Can we guarantee consistency here? + */ + int chan, err = MUS_NO_ERROR; + switch (type) + { + case MUS_AIFF: + case MUS_AIFC: + case MUS_NIST: + case MUS_RIFF: + err = mus_header_read(filename); + break; + default: + break; + } + if (err == MUS_ERROR) return(err); + chan = mus_file_reopen_write(filename); + if (chan == -1) return(mus_error(MUS_HEADER_WRITE_FAILED, "%s: %s", filename, STRERROR(errno))); + switch (type) + { + case MUS_NEXT: + lseek(chan, 8L, SEEK_SET); + mus_bint_to_char((unsigned char *)(hdrbuf + 0), (int)size); + CHK_WRITE(chan, hdrbuf, 4); + break; + case MUS_AIFC: + case MUS_AIFF: + /* we apparently have to make sure the form size and the data size are correct + * assumed here that we'll only be updating our own AIFF files + * There are 3 such locations -- the 2nd word of the file which is the overall form size, + * the frames variable in the COMM chunk, and the chunk-size variable in the SSND chunk + * an unexpected hassle for CLM is that we can open/close the output file many times if running mix, + * so we have to update the various size fields taking into account the old size + */ + + /* read sets current update_form_size, data_size, data_format, update_frames_location, update_ssnd_location */ + + lseek(chan, 4L, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, (int)size + update_form_size - mus_samples_to_bytes(data_format, data_size)); + /* cancel old data_size from previous possible write */ + CHK_WRITE(chan, hdrbuf, 4); + lseek(chan, update_frames_location, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, (int)size / (chans * mus_bytes_per_sample(data_format))); + CHK_WRITE(chan, hdrbuf, 4); + lseek(chan, update_ssnd_location, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, (int)size + 8); + CHK_WRITE(chan, hdrbuf, 4); + break; + case MUS_RIFF: + + /* read sets current update_form_size, data_format, data_size, update_ssnd_location */ + + lseek(chan, 4L, SEEK_SET); + mus_lint_to_char((unsigned char *)hdrbuf, (int)size + update_form_size - mus_samples_to_bytes(data_format, data_size)); + CHK_WRITE(chan, hdrbuf, 4); + lseek(chan, update_ssnd_location, SEEK_SET); + mus_lint_to_char((unsigned char *)hdrbuf, (int)size); + CHK_WRITE(chan, hdrbuf, 4); + break; + case MUS_IRCAM: + case MUS_RAW: + /* size is implicit in file size */ + break; + case MUS_NIST: + + /* read sets current srate, chans, data_format */ + + lseek(chan, 0L, SEEK_SET); + write_nist_header(chan, mus_header_srate(), mus_header_chans(), size, mus_header_format()); + break; + default: + CLOSE(chan, filename); + return(mus_error(MUS_UNSUPPORTED_HEADER_TYPE, "mus_header_change_data_size: can't update %s headers", mus_header_type_name(type))); + break; + } + CLOSE(chan, filename); + return(err); +} + +int mus_header_change_chans(const char *filename, int type, int new_chans) +{ + int err = MUS_NO_ERROR, fd; + off_t new_frames; + switch (type) + { + case MUS_AIFF: + case MUS_AIFC: + case MUS_NIST: + case MUS_RIFF: + err = mus_header_read(filename); + break; + default: + break; + } + if (err == MUS_ERROR) return(err); + fd = mus_file_reopen_write(filename); + if (fd == -1) + return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_chans for %s failed: %s", filename, STRERROR(errno))); + switch (type) + { + case MUS_NEXT: + lseek(fd, 20L, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, new_chans); + CHK_WRITE(fd, hdrbuf, 4); + break; + case MUS_IRCAM: + lseek(fd, 8L, SEEK_SET); + if (little_endian) + mus_lint_to_char((unsigned char *)hdrbuf, new_chans); + else mus_bint_to_char((unsigned char *)hdrbuf, new_chans); + CHK_WRITE(fd, hdrbuf, 4); + break; + case MUS_NIST: + lseek(fd, 0L, SEEK_SET); + write_nist_header(fd, srate, new_chans, mus_bytes_per_sample(data_format) * data_size, data_format); + /* header size is always 1024, so this is safe */ + break; + case MUS_AIFF: case MUS_AIFC: + lseek(fd, update_frames_location - 2, SEEK_SET); + new_frames = data_size / new_chans; + mus_bshort_to_char((unsigned char *)hdrbuf, new_chans); + mus_bint_to_char((unsigned char *)(hdrbuf + 2), new_frames); + CHK_WRITE(fd, hdrbuf, 6); + break; + case MUS_RIFF: + lseek(fd, update_frames_location - 2, SEEK_SET); + if (little_endian) + mus_lshort_to_char((unsigned char *)hdrbuf, new_chans); + else mus_bshort_to_char((unsigned char *)hdrbuf, new_chans); + CHK_WRITE(fd, hdrbuf, 2); + break; + } + CLOSE(fd, filename); + return(err); +} + +int mus_header_change_srate(const char *filename, int type, int new_srate) +{ + int err = MUS_NO_ERROR, fd; + switch (type) + { + case MUS_AIFF: + case MUS_AIFC: + case MUS_NIST: + case MUS_RIFF: + err = mus_header_read(filename); + break; + default: + break; + } + if (err == MUS_ERROR) return(err); + fd = mus_file_reopen_write(filename); + if (fd == -1) + return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_srate for %s failed: %s", filename, STRERROR(errno))); + switch (type) + { + case MUS_NEXT: + lseek(fd, 16L, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, new_srate); + CHK_WRITE(fd, hdrbuf, 4); + break; + case MUS_IRCAM: + lseek(fd, 4L, SEEK_SET); + if (little_endian) + mus_lfloat_to_char((unsigned char *)hdrbuf, (float)new_srate); + else mus_bfloat_to_char((unsigned char *)hdrbuf, (float)new_srate); + CHK_WRITE(fd, hdrbuf, 4); + break; + case MUS_NIST: + lseek(fd, 0L, SEEK_SET); + write_nist_header(fd, new_srate, chans, mus_bytes_per_sample(data_format) * data_size, data_format); + break; + case MUS_AIFF: + case MUS_AIFC: + lseek(fd, update_frames_location + 6, SEEK_SET); + double_to_ieee_80((double)new_srate, (unsigned char *)hdrbuf); + CHK_WRITE(fd, hdrbuf, 10); + break; + case MUS_RIFF: + lseek(fd, update_frames_location, SEEK_SET); + if (little_endian) + mus_lint_to_char((unsigned char *)hdrbuf, new_srate); + else mus_bint_to_char((unsigned char *)hdrbuf, new_srate); + CHK_WRITE(fd, hdrbuf, 4); + break; + } + CLOSE(fd, filename); + return(err); +} + +int mus_header_change_type(const char *filename, int new_type, int new_format) +{ + int err = MUS_NO_ERROR; + /* open temp, write header, copy data, replace original with temp */ + err = mus_header_read(filename); + if (err == MUS_NO_ERROR) + { + if (header_type != new_type) + { + int ofd, ifd, nbytes; + off_t loc, len = 0; + char *buf = NULL; + char *new_file, *comment = NULL; + new_file = (char *)CALLOC(strlen(filename) + 5, sizeof(char)); + sprintf(new_file, "%s.tmp", filename); + loc = mus_header_data_location(); + if (new_type != MUS_RAW) + { + if (comment_end > comment_start) + { + len = comment_end - comment_start + 1; + comment = (char *)CALLOC(len + 1, sizeof(char)); + ifd = mus_file_open_read(filename); + lseek(ifd, comment_start, SEEK_SET); + CHK_READ(ifd, (unsigned char *)comment, len); + CLOSE(ifd, filename); + } + data_size = data_size * mus_bytes_per_sample(data_format) / mus_bytes_per_sample(new_format); + mus_header_write(new_file, new_type, srate, chans, loc, data_size, new_format, comment, len); + } + else mus_file_create(new_file); + ifd = mus_file_open_read(filename); + lseek(ifd, loc, SEEK_SET); + ofd = mus_file_reopen_write(new_file); + lseek(ofd, 0L, SEEK_END); + buf = (char *)CALLOC(8192, sizeof(char)); + while ((nbytes = read(ifd, buf, 8192))) CHK_WRITE(ofd, buf, nbytes); + CLOSE(ifd, filename); + CLOSE(ofd, new_file); + FREE(buf); + if (comment) FREE(comment); + rename(new_file, filename); + FREE(new_file); + } + } + return(err); +} + +int mus_header_change_format(const char *filename, int type, int new_format) +{ + int err = MUS_NO_ERROR, fd; + off_t old_bytes; + switch (type) + { + case MUS_AIFF: + case MUS_AIFC: + case MUS_NIST: + case MUS_RIFF: + err = mus_header_read(filename); + break; + default: + break; + } + if (err == MUS_ERROR) return(err); + fd = mus_file_reopen_write(filename); + if (fd == -1) + return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_format for %s failed: %s", filename, STRERROR(errno))); + switch (type) + { + case MUS_NEXT: + lseek(fd, 12L, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, sndlib_format_to_next(new_format)); + CHK_WRITE(fd, hdrbuf, 4); + break; + case MUS_IRCAM: + lseek(fd, 12L, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, sndlib_format_to_ircam(new_format)); + CHK_WRITE(fd, hdrbuf, 4); + break; + case MUS_NIST: + lseek(fd, 0L, SEEK_SET); + write_nist_header(fd, srate, chans, mus_bytes_per_sample(data_format) * data_size, new_format); + break; + case MUS_AIFF: + case MUS_AIFC: + old_bytes = data_size * mus_bytes_per_sample(data_format); + lseek(fd, update_frames_location, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, old_bytes / (chans * mus_bytes_per_sample(new_format))); + mus_bshort_to_char((unsigned char *)(hdrbuf + 4), sndlib_format_to_aiff_bits(new_format)); + CHK_WRITE(fd, hdrbuf, 6); + if (header_type == MUS_AIFC) + { + const char *str; + str = sndlib_format_to_aifc_name(new_format); + lseek(fd, update_frames_location + 16, SEEK_SET); + write_four_chars((unsigned char *)(hdrbuf + 0), (const unsigned char *)str); + (*(unsigned char *)(hdrbuf + 4)) = 4; /* final pad null not accounted-for */ + write_four_chars((unsigned char *)(hdrbuf + 5), (const unsigned char *)str); + (*(unsigned char *)(hdrbuf + 9)) = 0; + CHK_WRITE(fd, hdrbuf, 10); + } + break; + case MUS_RIFF: + lseek(fd, update_frames_location + 24, SEEK_SET); + if (little_endian) + mus_lshort_to_char((unsigned char *)hdrbuf, sndlib_format_to_aiff_bits(new_format)); + else mus_bshort_to_char((unsigned char *)hdrbuf, sndlib_format_to_aiff_bits(new_format)); + CHK_WRITE(fd, hdrbuf, 2); + lseek(fd, update_frames_location + 10, SEEK_SET); + switch (new_format) + { + case MUS_MULAW: + new_format = 7; + break; + case MUS_ALAW: + new_format = 6; + break; + case MUS_UBYTE: + case MUS_LSHORT: case MUS_L24INT: case MUS_LINT: + case MUS_BSHORT: case MUS_B24INT: case MUS_BINT: + new_format = 1; + break; + case MUS_LFLOAT: case MUS_LDOUBLE: + case MUS_BFLOAT: case MUS_BDOUBLE: + new_format = 3; + break; + } + if (little_endian) + mus_lshort_to_char((unsigned char *)hdrbuf, new_format); + else mus_bshort_to_char((unsigned char *)hdrbuf, new_format); + CHK_WRITE(fd, hdrbuf, 2); + break; + } + CLOSE(fd, filename); + return(err); +} + +int mus_header_change_location(const char *filename, int type, off_t new_location) +{ + /* only Next/Sun changeable in this regard */ + int err = MUS_NO_ERROR, fd; + fd = mus_file_reopen_write(filename); + if (fd == -1) + return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_location for %s failed: %s", filename, STRERROR(errno))); + if (type == MUS_NEXT) + { + lseek(fd, 4L, SEEK_SET); + mus_bint_to_char((unsigned char *)hdrbuf, new_location); + CHK_WRITE(fd, hdrbuf, 4); + } + CLOSE(fd, filename); + return(err); +} + +int mus_header_change_comment(const char *filename, int type, char *new_comment) +{ + int err = MUS_NO_ERROR, fd, len = 0; + bool need_ripple = false; + err = mus_header_read(filename); + if (err == MUS_NO_ERROR) + { + switch (type) + { + case MUS_IRCAM: + fd = mus_file_reopen_write(filename); + lseek(fd, 16L, SEEK_SET); + if (new_comment) len = strlen(new_comment); + write_ircam_comment(fd, new_comment, len); + CLOSE(fd, filename); + break; + case MUS_NEXT: + fd = mus_file_reopen_write(filename); + lseek(fd, 24L, SEEK_SET); + if (new_comment == NULL) + write_next_comment(fd, new_comment, 0, data_location); /* erase old possibly */ + else + { + if ((comment_start != comment_end) && + ((int)(data_location - 24) >= (int)strlen(new_comment))) + write_next_comment(fd, new_comment, strlen(new_comment), data_location); /* there's room to overwrite old comment */ + else need_ripple = true; + } + CLOSE(fd, filename); + break; + default: + need_ripple = true; + break; + } + if (need_ripple) + { + /* open temp, write header, copy data, replace original with temp */ + char *new_file; + int ofd, ifd; + off_t loc; + int nbytes; + char *buf = NULL; + new_file = (char *)CALLOC(strlen(filename) + 5, sizeof(char)); + sprintf(new_file, "%s.tmp", filename); + loc = mus_header_data_location(); + mus_header_write(new_file, header_type, srate, chans, loc, data_size, data_format, new_comment, (new_comment) ? strlen(new_comment) : 0); + ifd = mus_file_open_read(filename); + lseek(ifd, loc, SEEK_SET); + ofd = mus_file_reopen_write(new_file); + lseek(ofd, 0L, SEEK_END); + buf = (char *)CALLOC(8192, sizeof(char)); + while ((nbytes = read(ifd, buf, 8192))) CHK_WRITE(ofd, buf, nbytes); + CLOSE(ifd, filename); + CLOSE(ofd, new_file); + FREE(buf); + rename(new_file, filename); + FREE(new_file); + } + } + return(err); +} + +bool mus_header_writable(int type, int format) /* -2 to ignore format for this call */ +{ + switch (type) + { + case MUS_NEXT: + if (format == MUS_UNKNOWN) return(false); + return(true); + break; + case MUS_NIST: + if (format == -2) return(true); + switch (format) + { + case MUS_BYTE: case MUS_BSHORT: case MUS_B24INT: case MUS_BINT: + case MUS_LSHORT: case MUS_L24INT: case MUS_LINT: + return(true); break; + default: + return(false); break; + } + break; + case MUS_AIFC: + if (format == -2) return(true); + switch (format) + { + case MUS_BSHORT: case MUS_B24INT: case MUS_BINT: + case MUS_BYTE: case MUS_MULAW: case MUS_ALAW: + case MUS_BFLOAT: case MUS_BDOUBLE: case MUS_UBYTE: case MUS_UBSHORT: + case MUS_LSHORT: case MUS_L24INT: case MUS_LINT: + return(true); + break; + default: + return(false); + break; + } + break; + case MUS_AIFF: + if (format == -2) return(true); + switch (format) + { + case MUS_BSHORT: case MUS_B24INT: case MUS_BINT: case MUS_BYTE: + return(true); + break; + default: + return(false); + break; + } + break; + case MUS_RIFF: + if (format == -2) return(true); + switch (format) + { + case MUS_MULAW: case MUS_ALAW: case MUS_UBYTE: case MUS_LFLOAT: + case MUS_LSHORT: case MUS_L24INT: case MUS_LINT: case MUS_LDOUBLE: + return(true); + break; + default: + return(false); + break; + } + break; + case MUS_IRCAM: + if (format == -2) return(true); + switch (format) + { + case MUS_MULAW: case MUS_ALAW: case MUS_BSHORT: case MUS_BINT: case MUS_BFLOAT: + return(true); + break; + default: + return(false); + break; + } + break; + case MUS_RAW: + return(true); + break; + default: return(false); break; + } + return(false); +} + +static char aifc_format[5]; + +/* try to give some info on data formats that aren't supported by sndlib */ +const char *mus_header_original_format_name(int format, int type) +{ + switch (type) + { + case MUS_NEXT: + switch (format) + { + case 0: return("unspecified"); break; case 8: return("indirect"); break; case 9: return("nested"); break; + case 10: return("dsp_core"); break; case 11: return("dsp_data_8"); break; case 12: return("dsp_data_16"); break; + case 13: return("dsp_data_24"); break; case 14: return("dsp_data_32"); break; case 16: return("display"); break; + case 17: return("mulaw_squelch"); break; case 18: return("emphasized"); break; case 19: return("compressed"); break; + case 20: return("compressed_emphasized"); break; case 21: return("dsp_commands"); break; case 22: return("dsp_commands_samples"); break; + case 23: return("adpcm_g721"); break; case 24: return("adpcm_g722"); break; case 25: return("adpcm_g723"); break; + case 26: return("adpcm_g723_5"); break; case 28: return("aes"); break; case 29: return("delat_mulaw_8"); break; + } + break; + case MUS_AIFC: + aifc_format[4] = 0; +#if MUS_LITTLE_ENDIAN + sprintf(aifc_format, "%c%c%c%c", format & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff); +#else + sprintf(aifc_format, "%c%c%c%c", (format >> 24) & 0xff, (format >> 16) & 0xff, (format >> 8) & 0xff, format & 0xff); +#endif + return(aifc_format); + break; + case MUS_PVF: + if (type_specifier == mus_char_to_uninterpreted_int((unsigned const char *)I_PVF2)) + return("ascii text"); + break; + case MUS_RIFF: + switch (format) + { + case 2: return("ADPCM"); break; case 4: return("VSELP"); break; case 5: return("IBM_CVSD"); break; + case 0x10: return("OKI_ADPCM"); break; case 0x11: return("DVI_ADPCM"); break; case 0x12: return("MediaSpace_ADPCM"); break; + case 0x13: return("Sierra_ADPCM"); break; case 0x14: return("G723_ADPCM"); break; case 0x15: return("DIGISTD"); break; + case 0x16: return("DIGIFIX"); break; case 0x17: return("Dialogic ADPCM"); break; case 0x18: return("Mediavision ADPCM"); break; + case 0x19: return("HP cu codec"); break; case 0x20: return("Yamaha_ADPCM"); break; case 0x21: return("SONARC"); break; + case 0x22: return("DSPGroup_TrueSpeech"); break; case 0x23: return("EchoSC1"); break; case 0x24: return("AudioFile_AF36"); break; + case 0x25: return("APTX"); break; case 0x26: return("AudioFile_AF10"); break; case 0x27: return("prosody 1612"); break; + case 0x28: return("lrc"); break; case 0x30: return("Dolby_Ac2"); break; case 0x31: return("GSM610"); break; + case 0x32: return("MSN audio codec"); break; case 0x33: return("Antext_ADPCM"); break; case 0x34: return("Control_res_vqlpc"); break; + case 0x35: return("DIGIREAL"); break; case 0x36: return("DIGIADPCM"); break; case 0x37: return("Control_res_cr10"); break; + case 0x38: return("NMS_VBXADPCM"); break; case 0x39: return("oland rdac"); break; case 0x3a: return("echo sc3"); break; + case 0x3b: return("Rockwell adpcm"); break; case 0x3c: return("Rockwell digitalk codec"); break; case 0x3d: return("Xebec"); break; + case 0x40: return("G721_ADPCM"); break; case 0x41: return("G728 CELP"); break; case 0x42: return("MS G723"); break; + case 0x50: return("MPEG"); break; case 0x52: return("RT24"); break; case 0x53: return("PAC"); break; + case 0x55: return("Mpeg layer 3"); break; case 0x59: return("Lucent G723"); break; case 0x60: return("Cirrus"); break; + case 0x61: return("ESS Tech pcm"); break; case 0x62: return("voxware "); break; case 0x63: return("canopus atrac"); break; + case 0x64: return("G726"); break; case 0x65: return("G722"); break; case 0x66: return("DSAT"); break; + case 0x67: return("DSAT display"); break; case 0x69: return("voxware "); break; case 0x70: return("voxware ac8 "); break; + case 0x71: return("voxware ac10 "); break; case 0x72: return("voxware ac16"); break; case 0x73: return("voxware ac20"); break; + case 0x74: return("voxware rt24"); break; case 0x75: return("voxware rt29"); break; case 0x76: return("voxware rt29hw"); break; + case 0x77: return("voxware vr12 "); break; case 0x78: return("voxware vr18"); break; case 0x79: return("voxware tq40"); break; + case 0x80: return("softsound"); break; case 0x81: return("voxware tq60 "); break; case 0x82: return("MS RT24"); break; + case 0x83: return("G729A"); break; case 0x84: return("MVI_MVI2"); break; case 0x85: return("DF G726"); break; + case 0x86: return("DF GSM610"); break; case 0x88: return("isaudio"); break; case 0x89: return("onlive"); break; + case 0x91: return("sbc24"); break; case 0x92: return("dolby ac3 spdif"); break; case 0x97: return("zyxel adpcm"); break; + case 0x98: return("philips lpcbb"); break; case 0x99: return("packed"); break; case 0x100: return("rhetorex adpcm"); break; + case 0x101: return("Irat"); break; case 0x102: return("IBM_alaw?"); break; case 0x103: return("IBM_ADPCM?"); break; + case 0x111: return("vivo G723"); break; case 0x112: return("vivo siren"); break; case 0x123: return("digital g273"); break; + case 0x200: return("Creative_ADPCM"); break; case 0x202: return("Creative fastspeech 8"); break; + case 0x203: return("Creative fastspeech 10"); break; + case 0x220: return("quarterdeck"); break; case 0x300: return("FM_TOWNS_SND"); break; case 0x400: return("BTV digital"); break; + case 0x680: return("VME vmpcm"); break; case 0x1000: return("OLIGSM"); break; case 0x1001: return("OLIADPCM"); break; + case 0x1002: return("OLICELP"); break; case 0x1003: return("OLISBC"); break; case 0x1004: return("OLIOPR"); break; + case 0x1100: return("LH codec"); break; case 0x1400: return("Norris"); break; case 0x1401: return("isaudio"); break; + case 0x1500: return("Soundspace musicompression"); break; case 0x2000: return("DVM"); break; + } + break; + } + return("unknown"); /* NULL here isn't safe -- Sun segfaults */ +} + +bool mus_header_no_header(const char *filename) +{ + int chan, bytes; + bool ok = false; + chan = mus_file_open_read(filename); + if (chan == -1) + return(mus_error(MUS_CANT_OPEN_FILE, "mus_header: can't open %s: %s", filename, STRERROR(errno))); + bytes = read(chan, hdrbuf, INITIAL_READ_SIZE); + CLOSE(chan, filename); + if (bytes > 4) + ok = ((match_four_chars((unsigned char *)hdrbuf, I_DSND)) || + (match_four_chars((unsigned char *)hdrbuf, I_DECN)) || + (match_four_chars((unsigned char *)hdrbuf, I_FORM)) || + (match_four_chars((unsigned char *)hdrbuf, I_RIFF)) || + (match_four_chars((unsigned char *)hdrbuf, I_RIFX)) || + (equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_VAX)) || + (equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_SUN)) || + (equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_MIPS)) || + (equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_NEXT)) || + (match_four_chars((unsigned char *)hdrbuf, I_NIST)) || + (match_four_chars((unsigned char *)hdrbuf, I_SOUN)) || + (match_four_chars((unsigned char *)hdrbuf, I_VOC0)) || + (match_four_chars((unsigned char *)hdrbuf, I_AVR_)) || + (mus_char_to_bshort((unsigned char *)hdrbuf) == 1336) || + (match_four_chars((unsigned char *)hdrbuf, I_ALaw)) || + (match_four_chars((unsigned char *)hdrbuf, I_GF1P)) || + (match_four_chars((unsigned char *)hdrbuf, I_DSIG)) || + (match_four_chars((unsigned char *)hdrbuf, I_GOLD)) || + (match_four_chars((unsigned char *)hdrbuf, I_Diam)) || + (match_four_chars((unsigned char *)hdrbuf, I_SRFS)) || + (match_four_chars((unsigned char *)hdrbuf, I_CSRE)) || + (match_four_chars((unsigned char *)hdrbuf, I_file)) || + ((hdrbuf[0] == 0xf0) && (hdrbuf[1] == 0x7e) && (hdrbuf[3] == 0x01)) || + (equal_big_or_little_endian((unsigned char *)(hdrbuf + 16), 0x00006a1a)) || + (match_four_chars((unsigned char *)hdrbuf, I_SPIB)) || + (match_four_chars((unsigned char *)hdrbuf, I_S___)) || + (match_four_chars((unsigned char *)hdrbuf, I_riff)) || + (match_four_chars((unsigned char *)hdrbuf, I_PVF1)) || + (match_four_chars((unsigned char *)hdrbuf, I_PVF2)) || + (match_four_chars((unsigned char *)hdrbuf, I_MThd)) || + (match_four_chars((unsigned char *)hdrbuf, I_SND_)) || + (match_four_chars((unsigned char *)hdrbuf, I_FSMt)) || + (match_four_chars((unsigned char *)hdrbuf, I_DDSF)) || + (match_four_chars((unsigned char *)hdrbuf, I_LM89)) || + (match_four_chars((unsigned char *)hdrbuf, I_SY85)) || + (match_four_chars((unsigned char *)hdrbuf, I_SY80)) || + (match_four_chars((unsigned char *)hdrbuf, I_PRAM)) || + (match_four_chars((unsigned char *)(hdrbuf + 35), I_UWFD)) || + (match_four_chars((unsigned char *)(hdrbuf + 76), I_SCRS)) || + (match_four_chars((unsigned char *)hdrbuf, I_covox)) || + (match_four_chars((unsigned char *)hdrbuf, I__PAF)) || + (match_four_chars((unsigned char *)hdrbuf, I_FAP_)) || + (match_four_chars((unsigned char *)hdrbuf, I_TWIN)) || + (match_four_chars((unsigned char *)hdrbuf, I_IMPS)) || + (match_four_chars((unsigned char *)hdrbuf, I_SMP1)) || + (match_four_chars((unsigned char *)hdrbuf, I_Maui)) || + (match_four_chars((unsigned char *)hdrbuf, I_SDIF)) || + (match_four_chars((unsigned char *)hdrbuf, I_ajkg)) || + (match_four_chars((unsigned char *)hdrbuf, I_NVF_))); + return(!ok); +} + +void mus_header_set_aiff_loop_info(int *data) +{ + /* include modes */ + if (data) + { + loop_starts[0] = data[0]; + loop_ends[0] = data[1]; + loop_starts[1] = data[2]; + loop_ends[1] = data[3]; + base_note = data[4]; + base_detune = data[5]; + loop_modes[0] = data[6]; + loop_modes[1] = data[7]; + } + else + { + loop_modes[0] = 0; + loop_modes[1] = 0; + } +} |