diff options
author | Benny Prijono <bennylp@teluu.com> | 2008-03-17 14:07:53 +0000 |
---|---|---|
committer | Benny Prijono <bennylp@teluu.com> | 2008-03-17 14:07:53 +0000 |
commit | e14e1fddbedf8c03df686ecd7c7af0c0ca0f52c6 (patch) | |
tree | 8ae1ae5d648b62b7fe49cd738e1103e91ac5b310 /pjmedia/src/pjmedia-codec/g722/g722_enc.c | |
parent | 685aef52bcf830cb591798cd0814dd4a10605497 (diff) |
Ticket #507: committed and tested g722 patch on Windows
git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@1870 74dad513-b988-da41-8d7b-12977e46ad98
Diffstat (limited to 'pjmedia/src/pjmedia-codec/g722/g722_enc.c')
-rw-r--r-- | pjmedia/src/pjmedia-codec/g722/g722_enc.c | 575 |
1 files changed, 575 insertions, 0 deletions
diff --git a/pjmedia/src/pjmedia-codec/g722/g722_enc.c b/pjmedia/src/pjmedia-codec/g722/g722_enc.c new file mode 100644 index 00000000..e71aad1b --- /dev/null +++ b/pjmedia/src/pjmedia-codec/g722/g722_enc.c @@ -0,0 +1,575 @@ +/* $Id$ */ +/* + * Copyright (C)2003-2008 Benny Prijono <benny@prijono.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +/* + * Based on implementation found in Carnegie Mellon Speech Group Software + * depository (ftp://ftp.cs.cmu.edu/project/fgdata/index.html). No copyright + * was claimed in the original source codes. + */ +#include <pjmedia/errno.h> +#include <pj/assert.h> +#include <pj/pool.h> + +#include "g722_enc.h" + +#if defined(PJMEDIA_HAS_G722_CODEC) && (PJMEDIA_HAS_G722_CODEC != 0) + +#define SATURATE(v, max, min) \ + if (v>max) v = max; \ + else if (v<min) v = min + +/* QMF tap coefficients */ +const int g722_qmf_coeff[24] = { + 3, -11, -11, 53, 12, -156, + 32, 362, -210, -805, 951, 3876, + 3876, 951, -805, -210, 362, 32, + -156, 12, 53, -11, -11, 3 +}; + + +static int block1l (int xl, int sl, int detl) +{ + int il ; + + int i, el, sil, mil, wd, wd1, hdu ; + + static const int q6[32] = { + 0, 35, 72, 110, 150, 190, 233, 276, 323, + 370, 422, 473, 530, 587, 650, 714, 786, + 858, 940, 1023, 1121, 1219, 1339, 1458, + 1612, 1765, 1980, 2195, 2557, 2919, 0, 0 + }; + + static const int iln[32] = { + 0, 63, 62, 31, 30, 29, 28, 27, 26, 25, + 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, + 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 0 + }; + + static const int ilp[32] = { + 0, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, + 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, + 40, 39, 38, 37, 36, 35, 34, 33, 32, 0 + }; + + /* SUBTRA */ + + el = xl - sl ; + SATURATE(el, 32767, -32768); + + /* QUANTL */ + + sil = el >> 15 ; + if (sil == 0 ) wd = el ; + else wd = 32767 - el & 32767 ; + + mil = 1 ; + + for (i = 1; i < 30; i++) { + hdu = (q6[i] << 3) * detl; + wd1 = (hdu >> 15) ; + if (wd >= wd1) mil = (i + 1) ; + else break ; + } + + if (sil == -1 ) il = iln[mil] ; + else il = ilp[mil] ; + + return (il) ; +} + +static int block2l (int il, int detl) +{ + int dlt; + int ril, wd2 ; + static const int qm4[16] = { + 0, -20456, -12896, -8968, + -6288, -4240, -2584, -1200, + 20456, 12896, 8968, 6288, + 4240, 2584, 1200, 0 + }; + + /* INVQAL */ + ril = il >> 2 ; + wd2 = qm4[ril] ; + dlt = (detl * wd2) >> 15 ; + + return (dlt) ; +} + +static int block3l (g722_enc_t *enc, int il) +{ + int detl; + int ril, il4, wd, wd1, wd2, wd3, nbpl, depl ; + static int const wl[8] = { + -60, -30, 58, 172, 334, 538, 1198, 3042 + } ; + static int const rl42[16] = { + 0, 7, 6, 5, 4, 3, 2, 1, 7, 6, 5, 4, 3, 2, 1, 0 + }; + static const int ilb[32] = { + 2048, 2093, 2139, 2186, 2233, 2282, 2332, + 2383, 2435, 2489, 2543, 2599, 2656, 2714, + 2774, 2834, 2896, 2960, 3025, 3091, 3158, + 3228, 3298, 3371, 3444, 3520, 3597, 3676, + 3756, 3838, 3922, 4008 + }; + + /* LOGSCL */ + + ril = il >> 2 ; + il4 = rl42[ril] ; + + wd = (enc->nbl * 32512) >> 15 ; + nbpl = wd + wl[il4] ; + + if (nbpl < 0) nbpl = 0 ; + if (nbpl > 18432) nbpl = 18432 ; + + /* SCALEL */ + + wd1 = (nbpl >> 6) & 31 ; + wd2 = nbpl >> 11 ; + if ((8 - wd2) < 0) wd3 = ilb[wd1] << (wd2 - 8) ; + else wd3 = ilb[wd1] >> (8 - wd2) ; + depl = wd3 << 2 ; + + /* DELAYA */ + enc->nbl = nbpl ; + + /* DELAYL */ + detl = depl ; + +#ifdef DEBUG_VERBOSE + printf ("BLOCK3L il=%4d, ril=%4d, il4=%4d, nbl=%4d, wd=%4d, nbpl=%4d\n", + il, ril, il4, enc->nbl, wd, nbpl) ; + printf ("wd1=%4d, wd2=%4d, wd3=%4d, depl=%4d, detl=%4d\n", + wd1, wd2, wd3, depl, detl) ; +#endif + + return (detl) ; +} + +static int block4l (g722_enc_t *enc, int dl) +{ + int sl = enc->slow; + int i ; + int wd, wd1, wd2, wd3, wd4, wd5 /*, wd6 */; + + enc->dlt[0] = dl; + + /* RECONS */ + + enc->rlt[0] = sl + enc->dlt[0] ; + SATURATE(enc->rlt[0], 32767, -32768); + + /* PARREC */ + + enc->plt[0] = enc->dlt[0] + enc->szl ; + SATURATE(enc->plt[0], 32767, -32768); + + /* UPPOL2 */ + + enc->sgl[0] = enc->plt[0] >> 15 ; + enc->sgl[1] = enc->plt[1] >> 15 ; + enc->sgl[2] = enc->plt[2] >> 15 ; + + wd1 = enc->al[1] << 2; + SATURATE(wd1, 32767, -32768); + + if ( enc->sgl[0] == enc->sgl[1] ) wd2 = - wd1 ; + else wd2 = wd1 ; + if ( wd2 > 32767 ) wd2 = 32767; + + wd2 = wd2 >> 7 ; + + if ( enc->sgl[0] == enc->sgl[2] ) wd3 = 128 ; + else wd3 = - 128 ; + + wd4 = wd2 + wd3 ; + wd5 = (enc->al[2] * 32512) >> 15 ; + + enc->apl[2] = wd4 + wd5 ; + SATURATE(enc->apl[2], 12288, -12288); + + /* UPPOL1 */ + + enc->sgl[0] = enc->plt[0] >> 15 ; + enc->sgl[1] = enc->plt[1] >> 15 ; + + if ( enc->sgl[0] == enc->sgl[1] ) wd1 = 192 ; + else wd1 = - 192 ; + + wd2 = (enc->al[1] * 32640) >> 15 ; + + enc->apl[1] = wd1 + wd2 ; + SATURATE(enc->apl[1], 32767, -32768); + + wd3 = (15360 - enc->apl[2]) ; + SATURATE(wd3, 32767, -32768); + + if ( enc->apl[1] > wd3) enc->apl[1] = wd3 ; + if ( enc->apl[1] < -wd3) enc->apl[1] = -wd3 ; + + /* UPZERO */ + + if ( enc->dlt[0] == 0 ) wd1 = 0 ; + else wd1 = 128 ; + + enc->sgl[0] = enc->dlt[0] >> 15 ; + + for ( i = 1; i < 7; i++ ) { + enc->sgl[i] = enc->dlt[i] >> 15 ; + if ( enc->sgl[i] == enc->sgl[0] ) wd2 = wd1 ; + else wd2 = - wd1 ; + wd3 = (enc->bl[i] * 32640) >> 15 ; + enc->bpl[i] = wd2 + wd3 ; + SATURATE(enc->bpl[i], 32767, -32768); + } + + /* DELAYA */ + + for ( i = 6; i > 0; i-- ) { + enc->dlt[i] = enc->dlt[i-1] ; + enc->bl[i] = enc->bpl[i] ; + } + + for ( i = 2; i > 0; i-- ) { + enc->rlt[i] = enc->rlt[i-1] ; + enc->plt[i] = enc->plt[i-1] ; + enc->al[i] = enc->apl[i] ; + } + + /* FILTEP */ + + wd1 = enc->rlt[1] + enc->rlt[1]; + SATURATE(wd1, 32767, -32768); + wd1 = ( enc->al[1] * wd1 ) >> 15 ; + + wd2 = enc->rlt[2] + enc->rlt[2]; + SATURATE(wd2, 32767, -32768); + wd2 = ( enc->al[2] * wd2 ) >> 15 ; + + enc->spl = wd1 + wd2 ; + SATURATE(enc->spl, 32767, -32768); + + /* FILTEZ */ + + enc->szl = 0 ; + for (i=6; i>0; i--) { + wd = enc->dlt[i] + enc->dlt[i]; + SATURATE(wd, 32767, -32768); + enc->szl += (enc->bl[i] * wd) >> 15 ; + SATURATE(enc->szl, 32767, -32768); + } + + /* PREDIC */ + + sl = enc->spl + enc->szl ; + SATURATE(sl, 32767, -32768); + + return (sl) ; +} + +static int block1h (int xh, int sh, int deth) +{ + int ih ; + + int eh, sih, mih, wd, wd1, hdu ; + + static const int ihn[3] = { 0, 1, 0 } ; + static const int ihp[3] = { 0, 3, 2 } ; + + /* SUBTRA */ + + eh = xh - sh ; + SATURATE(eh, 32767, -32768); + + /* QUANTH */ + + sih = eh >> 15 ; + if (sih == 0 ) wd = eh ; + else wd = 32767 - eh & 32767 ; + + hdu = (564 << 3) * deth; + wd1 = (hdu >> 15) ; + if (wd >= wd1) mih = 2 ; + else mih = 1 ; + + if (sih == -1 ) ih = ihn[mih] ; + else ih = ihp[mih] ; + + return (ih) ; +} + +static int block2h (int ih, int deth) +{ + int dh ; + int wd2 ; + static const int qm2[4] = {-7408, -1616, 7408, 1616}; + + /* INVQAH */ + + wd2 = qm2[ih] ; + dh = (deth * wd2) >> 15 ; + + return (dh) ; +} + +static int block3h (g722_enc_t *enc, int ih) +{ + int deth ; + int ih2, wd, wd1, wd2, wd3, nbph, deph ; + static const int wh[3] = {0, -214, 798} ; + static const int rh2[4] = {2, 1, 2, 1} ; + static const int ilb[32] = { + 2048, 2093, 2139, 2186, 2233, 2282, 2332, + 2383, 2435, 2489, 2543, 2599, 2656, 2714, + 2774, 2834, 2896, 2960, 3025, 3091, 3158, + 3228, 3298, 3371, 3444, 3520, 3597, 3676, + 3756, 3838, 3922, 4008 + }; + + /* LOGSCH */ + + ih2 = rh2[ih] ; + wd = (enc->nbh * 32512) >> 15 ; + nbph = wd + wh[ih2] ; + + if (nbph < 0) nbph = 0 ; + if (nbph > 22528) nbph = 22528 ; + + /* SCALEH */ + + wd1 = (nbph >> 6) & 31 ; + wd2 = nbph >> 11 ; + if ((10-wd2) < 0) wd3 = ilb[wd1] << (wd2-10) ; + else wd3 = ilb[wd1] >> (10-wd2) ; + deph = wd3 << 2 ; + + /* DELAYA */ + enc->nbh = nbph ; + /* DELAYH */ + deth = deph ; + + return (deth) ; +} + +static int block4h (g722_enc_t *enc, int d) +{ + int sh = enc->shigh; + int i ; + int wd, wd1, wd2, wd3, wd4, wd5 /*, wd6 */; + + enc->dh[0] = d; + + /* RECONS */ + + enc->rh[0] = sh + enc->dh[0] ; + SATURATE(enc->rh[0], 32767, -32768); + + /* PARREC */ + + enc->ph[0] = enc->dh[0] + enc->szh ; + SATURATE(enc->ph[0], 32767, -32768); + + /* UPPOL2 */ + + enc->sgh[0] = enc->ph[0] >> 15 ; + enc->sgh[1] = enc->ph[1] >> 15 ; + enc->sgh[2] = enc->ph[2] >> 15 ; + + wd1 = enc->ah[1] << 2; + SATURATE(wd1, 32767, -32768); + + if ( enc->sgh[0] == enc->sgh[1] ) wd2 = - wd1 ; + else wd2 = wd1 ; + if ( wd2 > 32767 ) wd2 = 32767; + + wd2 = wd2 >> 7 ; + + if ( enc->sgh[0] == enc->sgh[2] ) wd3 = 128 ; + else wd3 = - 128 ; + + wd4 = wd2 + wd3 ; + wd5 = (enc->ah[2] * 32512) >> 15 ; + + enc->aph[2] = wd4 + wd5 ; + SATURATE(enc->aph[2], 12288, -12288); + + /* UPPOL1 */ + + enc->sgh[0] = enc->ph[0] >> 15 ; + enc->sgh[1] = enc->ph[1] >> 15 ; + + if ( enc->sgh[0] == enc->sgh[1] ) wd1 = 192 ; + else wd1 = - 192 ; + + wd2 = (enc->ah[1] * 32640) >> 15 ; + + enc->aph[1] = wd1 + wd2 ; + SATURATE(enc->aph[1], 32767, -32768); + + wd3 = (15360 - enc->aph[2]) ; + SATURATE(wd3, 32767, -32768); + + if ( enc->aph[1] > wd3) enc->aph[1] = wd3 ; + else if ( enc->aph[1] < -wd3) enc->aph[1] = -wd3 ; + + /* UPZERO */ + + if ( enc->dh[0] == 0 ) wd1 = 0 ; + else wd1 = 128 ; + + enc->sgh[0] = enc->dh[0] >> 15 ; + + for ( i = 1; i < 7; i++ ) { + enc->sgh[i] = enc->dh[i] >> 15 ; + if ( enc->sgh[i] == enc->sgh[0] ) wd2 = wd1 ; + else wd2 = - wd1 ; + wd3 = (enc->bh[i] * 32640) >> 15 ; + enc->bph[i] = wd2 + wd3 ; + SATURATE(enc->bph[i], 32767, -32768); + } + + /* DELAYA */ + for ( i = 6; i > 0; i-- ) { + enc->dh[i] = enc->dh[i-1] ; + enc->bh[i] = enc->bph[i] ; + } + + for ( i = 2; i > 0; i-- ) { + enc->rh[i] = enc->rh[i-1] ; + enc->ph[i] = enc->ph[i-1] ; + enc->ah[i] = enc->aph[i] ; + } + + /* FILTEP */ + + wd1 = enc->rh[1] + enc->rh[1]; + SATURATE(wd1, 32767, -32768); + wd1 = ( enc->ah[1] * wd1 ) >> 15 ; + + wd2 = enc->rh[2] + enc->rh[2]; + SATURATE(wd2, 32767, -32768); + wd2 = ( enc->ah[2] * wd2 ) >> 15 ; + + enc->sph = wd1 + wd2 ; + SATURATE(enc->sph, 32767, -32768); + + /* FILTEZ */ + + enc->szh = 0 ; + for (i=6; i>0; i--) { + wd = enc->dh[i] + enc->dh[i]; + SATURATE(wd, 32767, -32768); + enc->szh += (enc->bh[i] * wd) >> 15 ; + SATURATE(enc->szh, 32767, -32768); + } + + /* PREDIC */ + + sh = enc->sph + enc->szh ; + SATURATE(sh, 32767, -32768); + + return (sh) ; +} + +/* PROCESS PCM THROUGH THE QMF FILTER */ +static void tx_qmf(g722_enc_t *enc, int pcm1, int pcm2, int *lo, int *hi) +{ + int sumodd, sumeven; + int i; + + pj_memmove(&enc->x[2], enc->x, 22 * sizeof(enc->x[0])); + enc->x[1] = pcm1; + enc->x[0] = pcm2; + + sumodd = 0; + for (i=1; i<24; i+=2) sumodd += enc->x[i] * g722_qmf_coeff[i]; + + sumeven = 0; + for (i=0; i<24; i+=2) sumeven += enc->x[i] * g722_qmf_coeff[i]; + + *lo = (sumeven + sumodd) >> 13 ; + *hi = (sumeven - sumodd) >> 13 ; + + SATURATE(*lo, 16383, -16384); + SATURATE(*hi, 16383, -16383); +} + + +PJ_DEF(pj_status_t) g722_enc_init(g722_enc_t *enc) +{ + PJ_ASSERT_RETURN(enc, PJ_EINVAL); + + pj_bzero(enc, sizeof(g722_enc_t)); + + enc->detlow = 32; + enc->dethigh = 8; + + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) g722_enc_encode( g722_enc_t *enc, + pj_int16_t in[], + pj_size_t nsamples, + void *out, + pj_size_t *out_size) +{ + unsigned i; + int xlow, ilow, dlowt; + int xhigh, ihigh, dhigh; + pj_uint8_t *out_ = (pj_uint8_t*) out; + + PJ_ASSERT_RETURN(enc && in && nsamples && out && out_size, PJ_EINVAL); + PJ_ASSERT_RETURN(nsamples % 2 == 0, PJ_EINVAL); + PJ_ASSERT_RETURN(*out_size >= (nsamples >> 1), PJ_ETOOSMALL); + + for(i = 0; i < nsamples; i += 2) { + tx_qmf(enc, in[i], in[i+1], &xlow, &xhigh); + + /* low band encoder */ + ilow = block1l (xlow, enc->slow, enc->detlow) ; + dlowt = block2l (ilow, enc->detlow) ; + enc->detlow = block3l (enc, ilow) ; + enc->slow = block4l (enc, dlowt) ; + + /* high band encoder */ + ihigh = block1h (xhigh, enc->shigh, enc->dethigh) ; + dhigh = block2h (ihigh, enc->dethigh) ; + enc->dethigh = block3h (enc, ihigh) ; + enc->shigh = block4h (enc, dhigh) ; + + /* bits mix low & high adpcm */ + out_[i/2] = (pj_uint8_t)((ihigh << 6) | ilow); + } + + *out_size = nsamples >> 1; + + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) g722_enc_deinit(g722_enc_t *enc) +{ + pj_bzero(enc, sizeof(g722_enc_t)); + + return PJ_SUCCESS; +} + +#endif |