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/*
* decode_ogg.c
*
* Copyright (C) Tilmann Bitterberg
*
* This file is part of transcode, a video stream processing tool
*
* transcode 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, or (at your option)
* any later version.
*
* transcode 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdint.h>
#include "transcode.h"
#include "libtc/libtc.h"
#include "tcinfo.h"
#include "ioaux.h"
#include "tc.h"
#if (HAVE_OGG && HAVE_VORBIS)
#include <vorbis/vorbisfile.h>
#define TC_OGG_BUF_SIZE 8192
/* ------------------------------------------------------------
*
* decoder thread
*
* ------------------------------------------------------------*/
static int decode_ogg_file(int fdin, int fdout, int verbose)
{
FILE *in = NULL;
OggVorbis_File vf;
uint8_t buf[TC_OGG_BUF_SIZE];
unsigned int written = 0;
ogg_int64_t length = 0;
#if 0
ogg_int64_t done = 0;
#endif
int ret, bs = 0, size = 0, bits = 16, r = 0;
int seekable = 0, endian = 0, sign = 1;
#if 0
int percent = 0;
#endif
in = fdopen(fdin, "rb");
ret = ov_open(in, &vf, NULL, 0);
if (ret < 0) {
tc_log_error(__FILE__, "Failed to open input as vorbis");
fclose(in);
return 1;
}
if (ov_seekable(&vf)) {
seekable = 1;
length = ov_pcm_total(&vf, 0);
size = bits/8 * ov_info(&vf, 0)->channels;
}
while ((r = ov_read(&vf, buf, TC_OGG_BUF_SIZE,
endian, bits/8, sign, &bs)) != 0) {
if (bs != 0) {
tc_log_error(__FILE__, "Only one logical bitstream currently supported");
break;
}
if (r < 0 && verbose) {
tc_log_warn(__FILE__, "hole in data");
continue;
}
ret = tc_pwrite(fdout, buf, r);
if (ret != r) {
tc_log_perror(__FILE__, "Error writing to file");
ov_clear(&vf);
return 1;
}
written += ret;
#if 0
if(verbose && seekable) {
done += ret/size;
if((double)done/(double)length * 200. > (double)percent) {
percent = (double)done/(double)length *200;
fprintf(stderr, "\r[%5.1f%%]", (double)percent/2.);
}
}
#endif
}
ov_clear(&vf);
return 0;
}
#endif // HAVE_OGG
void decode_ogg(decode_t *decode)
{
#if (HAVE_OGG && HAVE_VORBIS)
decode_ogg_file(decode->fd_in, decode->fd_out, decode->verbose);
import_exit(0);
#else
tc_log_error(__FILE__, "no support for VORBIS decoding configured - exit.");
import_exit(1);
#endif
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/
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