# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1671000317 0
# Node ID 578fdedf432734c02b016a32c17c37694e7e9280
# Parent  c1dc094f08218223ada12be105e0b6c46628bd61
pcm16-wav2raw utility written

diff -r c1dc094f0821 -r 578fdedf4327 .hgignore
--- a/.hgignore	Wed Dec 14 06:19:03 2022 +0000
+++ b/.hgignore	Wed Dec 14 06:45:17 2022 +0000
@@ -31,5 +31,6 @@
 ^miscutil/gsm-efr2amr$
 ^miscutil/gsmrec-dump$
 ^miscutil/pcm16-raw2wav$
+^miscutil/pcm16-wav2raw$
 
 ^pcap/rtp-gsmfr-extr$
diff -r c1dc094f0821 -r 578fdedf4327 miscutil/Makefile
--- a/miscutil/Makefile	Wed Dec 14 06:19:03 2022 +0000
+++ b/miscutil/Makefile	Wed Dec 14 06:45:17 2022 +0000
@@ -1,6 +1,6 @@
 CC=	gcc
 CFLAGS=	-O2
-PROGS=	gsm-amr2efr gsm-efr2amr gsmrec-dump pcm16-raw2wav
+PROGS=	gsm-amr2efr gsm-efr2amr gsmrec-dump pcm16-raw2wav pcm16-wav2raw
 LIBEFR=	../libgsmefr/libgsmefr.a
 LIBTEST=../libtest/libtest.a
 INSTBIN=/opt/freecalypso/bin
@@ -22,6 +22,9 @@
 pcm16-raw2wav:	raw2wav.o ${LIBTEST}
 	${CC} ${CFLAGS} -o $@ raw2wav.o ${LIBTEST}
 
+pcm16-wav2raw:	wav2raw.o ${LIBTEST}
+	${CC} ${CFLAGS} -o $@ wav2raw.o ${LIBTEST}
+
 install:
 	mkdir -p ${INSTBIN}
 	install -c ${PROGS} ${INSTBIN}
diff -r c1dc094f0821 -r 578fdedf4327 miscutil/wav2raw.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/miscutil/wav2raw.c	Wed Dec 14 06:45:17 2022 +0000
@@ -0,0 +1,67 @@
+/*
+ * This program reads a 16-bit linear PCM speech recording in WAV format
+ * and converts it to raw format, either BE or LE.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include "../libtest/wavreader.h"
+#include "../libtest/wavrdhelp.h"
+
+main(argc, argv)
+	char **argv;
+{
+	int big_endian;
+	void *wav;
+	FILE *outf;
+	int16_t pcm[160], samp;
+	uint8_t bytes[320], *dp;
+	int cc, rc, i;
+
+	if (argc != 4) {
+usage:		fprintf(stderr, "usage: %s input.wav output.raw be|le\n",
+			argv[0]);
+		exit(1);
+	}
+	if (!strcmp(argv[3], "be"))
+		big_endian = 1;
+	else if (!strcmp(argv[3], "le"))
+		big_endian = 0;
+	else
+		goto usage;
+	wav = wav_read_open(argv[1]);
+	if (!wav) {
+		perror(argv[1]);
+		exit(1);
+	}
+	rc = wavrd_check_header(wav, argv[1]);
+	if (rc < 0)
+		exit(1);	/* error msg already printed */
+	outf = fopen(argv[2], "w");
+	if (!outf) {
+		perror(argv[2]);
+		exit(1);
+	}
+	for (;;) {
+		cc = wavrd_get_pcm_block(wav, pcm);
+		if (!cc)
+			break;
+		dp = bytes;
+		for (i = 0; i < cc; i++) {
+			samp = pcm[i];
+			if (big_endian) {
+				*dp++ = (samp >> 8) & 0xFF;
+				*dp++ = samp & 0xFF;
+			} else {
+				*dp++ = samp & 0xFF;
+				*dp++ = (samp >> 8) & 0xFF;
+			}
+		}
+		fwrite(bytes, 2, cc, outf);
+	}
+	fclose(outf);
+	exit(0);
+}