* TTA demuxer
* Copyright (c) 2006 Alex Beregszaszi
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
+#include "id3v1.h"
+#include "libavutil/dict.h"
typedef struct {
int totalframes, currentframe;
static int tta_probe(AVProbeData *p)
{
const uint8_t *d = p->buf;
+
if (d[0] == 'T' && d[1] == 'T' && d[2] == 'A' && d[3] == '1')
return 80;
return 0;
TTAContext *c = s->priv_data;
AVStream *st;
int i, channels, bps, samplerate, datalen, framelen;
- uint64_t framepos;
+ uint64_t framepos, start_offset;
+
+ if (!av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX))
+ ff_id3v1_read(s);
- if (get_le32(s->pb) != ff_get_fourcc("TTA1"))
+ start_offset = avio_tell(s->pb);
+ if (avio_rl32(s->pb) != AV_RL32("TTA1"))
return -1; // not tta file
- url_fskip(s->pb, 2); // FIXME: flags
- channels = get_le16(s->pb);
- bps = get_le16(s->pb);
- samplerate = get_le32(s->pb);
+ avio_skip(s->pb, 2); // FIXME: flags
+ channels = avio_rl16(s->pb);
+ bps = avio_rl16(s->pb);
+ samplerate = avio_rl32(s->pb);
if(samplerate <= 0 || samplerate > 1000000){
av_log(s, AV_LOG_ERROR, "nonsense samplerate\n");
return -1;
}
- datalen = get_le32(s->pb);
+ datalen = avio_rl32(s->pb);
if(datalen < 0){
av_log(s, AV_LOG_ERROR, "nonsense datalen\n");
return -1;
}
- url_fskip(s->pb, 4); // header crc
+ avio_skip(s->pb, 4); // header crc
framelen = samplerate*256/245;
c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
st->start_time = 0;
st->duration = datalen;
- framepos = url_ftell(s->pb) + 4*c->totalframes + 4;
+ framepos = avio_tell(s->pb) + 4*c->totalframes + 4;
for (i = 0; i < c->totalframes; i++) {
- uint32_t size = get_le32(s->pb);
+ uint32_t size = avio_rl32(s->pb);
av_add_index_entry(st, framepos, i*framelen, size, 0, AVINDEX_KEYFRAME);
framepos += size;
}
- url_fskip(s->pb, 4); // seektable crc
+ avio_skip(s->pb, 4); // seektable crc
- st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_TTA;
st->codec->channels = channels;
st->codec->sample_rate = samplerate;
- st->codec->bits_per_sample = bps;
+ st->codec->bits_per_coded_sample = bps;
- st->codec->extradata_size = url_ftell(s->pb);
+ st->codec->extradata_size = avio_tell(s->pb) - start_offset;
if(st->codec->extradata_size+FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){
- //this check is redundant as get_buffer should fail
+ //this check is redundant as avio_read should fail
av_log(s, AV_LOG_ERROR, "extradata_size too large\n");
return -1;
}
st->codec->extradata = av_mallocz(st->codec->extradata_size+FF_INPUT_BUFFER_PADDING_SIZE);
- url_fseek(s->pb, 0, SEEK_SET);
- get_buffer(s->pb, st->codec->extradata, st->codec->extradata_size);
+ avio_seek(s->pb, start_offset, SEEK_SET);
+ avio_read(s->pb, st->codec->extradata, st->codec->extradata_size);
return 0;
}
return -1;
c->currentframe = index;
- url_fseek(s->pb, st->index_entries[index].pos, SEEK_SET);
+ avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET);
return 0;
}
-AVInputFormat tta_demuxer = {
+AVInputFormat ff_tta_demuxer = {
"tta",
NULL_IF_CONFIG_SMALL("True Audio"),
sizeof(TTAContext),