add Marcel's original, unmodified sbcdec/enc clients to sbc

1 files changed, 194 insertions, 1 deletions

diff --git a/sbc/sbcdec.c b/sbc/sbcdec.c
index 208cdfd8..0617fe04 100644
--- a/sbc/sbcdec.c
+++ b/sbc/sbcdec.c
@@ -1,6 +1,6 @@
 /*
  *
- *  Bluetooth low-complexity, subband codec (SBC) library
+ *  Bluetooth low-complexity, subband codec (SBC) decoder
  *
  *  Copyright (C) 2004-2007  Marcel Holtmann <marcel@holtmann.org>
  *
@@ -25,9 +25,202 @@
 #include <config.h>
 #endif
 
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/soundcard.h>
+
 #include "sbc.h"
 
+#define BUF_SIZE 8192
+
+static void decode(char *filename, char *audiodevice, int tofile)
+{
+	unsigned char buf[BUF_SIZE], *stream;
+	struct stat st;
+	off_t filesize;
+	sbc_t sbc;
+	int fd, ad, pos, streamlen, framelen, count, format = AFMT_S16_BE;
+
+	if (stat(filename, &st) < 0) {
+		fprintf(stderr, "Can't get size of file %s: %s\n",
+						filename, strerror(errno));
+		return;
+	}
+
+	filesize = st.st_size;
+	stream = malloc(st.st_size);
+
+	if (!stream) {
+		fprintf(stderr, "Can't allocate memory for %s: %s\n",
+						filename, strerror(errno));
+		return;
+	}
+
+	fd = open(filename, O_RDONLY);
+	if (fd < 0) {
+		fprintf(stderr, "Can't open file %s: %s\n",
+						filename, strerror(errno));
+		goto free;
+	}
+
+	if (read(fd, stream, st.st_size) != st.st_size) {
+		fprintf(stderr, "Can't read content of %s: %s\n",
+						filename, strerror(errno));
+		close(fd);
+		goto free;
+	}
+
+	close(fd);
+
+	pos = 0;
+	streamlen = st.st_size;
+
+	ad = open(audiodevice, O_WRONLY | (tofile ? (O_CREAT | O_TRUNC) : 0), tofile ? 0644 : 0);
+	if (ad < 0) {
+		fprintf(stderr, "Can't open audio device %s: %s\n",
+						audiodevice, strerror(errno));
+		goto free;
+	}
+
+	sbc_init(&sbc, 0L);
+
+	framelen = sbc_decode(&sbc, stream, streamlen);
+	printf("%d Hz, %d channels\n", sbc.rate, sbc.channels);
+	if (!tofile) {
+		if (ioctl(ad, SNDCTL_DSP_SETFMT, &format) < 0) {
+			fprintf(stderr, "Can't set audio format on %s: %s\n",
+							audiodevice, strerror(errno));
+			goto close;
+		}
+		if (ioctl(ad, SNDCTL_DSP_CHANNELS, &sbc.channels) < 0) {
+			fprintf(stderr, "Can't set number of channels on %s: %s\n",
+							audiodevice, strerror(errno));
+			goto close;
+		}
+
+		if (ioctl(ad, SNDCTL_DSP_SPEED, &sbc.rate) < 0) {
+			fprintf(stderr, "Can't set audio rate on %s: %s\n",
+							audiodevice, strerror(errno));
+			goto close;
+		}
+	}
+
+	count = 0;
+	while (framelen > 0) {
+		// we have completed an sbc_decode at this point
+		// sbc.len is the length of the frame we just decoded
+		// count is the number of decoded bytes yet to be written
+
+		if (count + sbc.len > BUF_SIZE) {
+			// buffer is too full to stuff decoded audio in
+			// so it must be written to the device
+			write(ad, buf, count);
+			count = 0;
+		}
+
+		// sanity check
+		if(count + sbc.len > BUF_SIZE) {
+			fprintf(stderr, "buffer size of %d is too small for decoded data (%d)\n", BUF_SIZE, sbc.len + count);
+			exit(1);
+		}
+
+		// move the latest decoded data into buf and increase the count
+		memcpy(buf + count, sbc.data, sbc.len);
+		count += sbc.len;
+
+		// push the pointer in the file forward to the next bit to be decoded
+		// tell the decoder to decode up to the remaining length of the file (!)
+		pos += framelen;
+		framelen = sbc_decode(&sbc, stream + pos, streamlen - pos);
+	}
+
+	if (count > 0)
+		write(ad, buf, count);
+
+close:
+	sbc_finish(&sbc);
+
+	close(ad);
+
+free:
+	free(stream);
+}
+
+static void usage(void)
+{
+	printf("SBC decoder utility ver %s\n", VERSION);
+	printf("Copyright (c) 2004  Marcel Holtmann\n\n");
+
+	printf("Usage:\n"
+		"\tsbcdec [options] file(s)\n"
+		"\n");
+
+	printf("Options:\n"
+		"\t-h, --help           Display help\n"
+		"\t-d, --device <dsp>   Sound device\n"
+		"\t-v, --verbose        Verbose mode\n"
+		"\t-f, --file           Decode to a file\n"
+		"\n");
+}
+
+static struct option main_options[] = {
+	{ "help",	0, 0, 'h' },
+	{ "device",	1, 0, 'd' },
+	{ "verbose",	0, 0, 'v' },
+	{ "file",	1, 0, 'f' },
+	{ 0, 0, 0, 0 }
+};
+
 int main(int argc, char *argv[])
 {
+	char *device = NULL;
+	char *file = NULL;
+	int i, opt, verbose = 0, tofile = 0;
+
+	while ((opt = getopt_long(argc, argv, "+hd:vf:", main_options, NULL)) != -1) {
+		switch(opt) {
+		case 'h':
+			usage();
+			exit(0);
+
+		case 'd':
+			device = strdup(optarg);
+			break;
+
+		case 'v':
+			verbose = 1;
+			break;
+		case 'f' :
+			file = strdup(optarg);
+			tofile = 1;
+			break;
+
+		default:
+			exit(1);
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+	optind = 0;
+
+	if (argc < 1) {
+		usage();
+		exit(1);
+	}
+
+	for (i = 0; i < argc; i++)
+		decode(argv[i], device ? device : file ? file : "/dev/dsp", tofile);
+
+	if (device)
+		free(device);
+
 	return 0;
 }