1 files changed, 113 insertions, 0 deletions
diff --git a/third_party/gsm/src/toast_audio.c b/third_party/gsm/src/toast_audio.c
new file mode 100644
index 00000000..f090f231
--- /dev/null
+++ b/third_party/gsm/src/toast_audio.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
+ * Universitaet Berlin.  See the accompanying file "COPYRIGHT" for
+ * details.  THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
+ */
+
+/* $Header: /tmp_amd/presto/export/kbs/jutta/src/gsm/RCS/toast_audio.c,v 1.6 1995/03/07 21:21:24 jutta Exp $ */
+
+#include	"toast.h"
+
+/*  toast_audio -- functions to manipulate SunOS audio files.
+ *
+ *  This is reverse engineered from our present soundfiles
+ *  and in no way portable, durable or aesthetically pleasing.
+ */
+
+extern FILE	* in, 	  * out;
+extern char	* inname;
+extern char	* progname;
+
+extern int	(*output) P((gsm_signal *)),
+		(*input ) P((gsm_signal *));
+
+extern int	alaw_input   P((gsm_signal *)),
+		ulaw_input   P((gsm_signal *)),
+		linear_input P((gsm_signal *));
+
+extern int	ulaw_output P((gsm_signal *));
+
+static int put_u32 P2((f, u), FILE * f, unsigned long u)
+{
+	/*  Write a 32-bit unsigned value msb first. 
+	 */
+	if (  putc( (char)((u>>24) & 0x0FF), f) == EOF
+	   || putc( (char)((u>>16) & 0x0FF), f) == EOF
+	   || putc( (char)((u>> 8) & 0x0FF), f) == EOF
+	   || putc( (char)( u      & 0x0FF), f) == EOF) return -1;
+
+	return 0;
+}
+
+static int get_u32 P2((f, up), FILE * f, unsigned long * up)
+{
+	/*  Read a 32-bit unsigned value msb first.
+	 */
+	int		i;
+	unsigned long 	u;
+
+	if (  				      (i = getc(f)) == EOF
+	   || ((u =        (unsigned char)i), (i = getc(f)) == EOF)
+	   || ((u = (u<<8)|(unsigned char)i), (i = getc(f)) == EOF)
+	   || ((u = (u<<8)|(unsigned char)i), (i = getc(f)) == EOF)) return -1;
+	*up = 	    (u<<8)|(unsigned char)i;
+	return 0;
+}
+
+int audio_init_input P0()
+{
+	unsigned long	len, enc;	/* unsigned 32 bits	*/
+
+	if (  fgetc(in) != '.' 
+	   || fgetc(in) != 's'
+	   || fgetc(in) != 'n'
+	   || fgetc(in) != 'd'
+	   || get_u32( in, &len )
+	   || get_u32( in, &enc )	/* skip this */
+	   || get_u32( in, &enc )) {
+		fprintf(stderr, 
+	"%s: bad (missing?) header in Sun audio file \"%s\";\n\
+	Try one of -u, -a, -l instead (%s -h for help).\n",
+			progname, inname ? inname : "stdin", progname);
+		return -1;
+	}
+
+	switch (enc) {
+	case 1:	input = ulaw_input;  	break;
+	case 2: input = alaw_input;  	break;
+	case 3: input = linear_input; 	break;
+	default:
+		fprintf(stderr,
+"%s: warning: file format #%lu for %s not implemented, defaulting to u-law.\n",
+			progname, enc, inname);
+		input = ulaw_input;
+		break;
+	}
+
+	while (len > 4*4)
+		if (getc(in) == EOF) {
+			fprintf(stderr, 
+			"%s: EOF in header of Sun audio file \"%s\";\n\
+			Try one of -u, -a, -l instead (%s -h for help).\n",
+				progname, inname ? inname : "stdin", progname);
+			return -1;
+		}
+		else len--;
+
+	return 0;
+}
+
+int audio_init_output P0()
+{
+	if (  fputs(".snd", out) == EOF
+	   || put_u32(out, 32)
+	   || put_u32(out, ~(unsigned long)0)
+	   || put_u32(out, 1)
+	   || put_u32(out, 8000)
+	   || put_u32(out, 1)
+	   || put_u32(out, 0)
+	   || put_u32(out, 0)) return -1;
+
+	return 0;
+}
+