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Diffstat (limited to 'contrib/ffmpeg/libavformat/tta.c')
-rw-r--r--contrib/ffmpeg/libavformat/tta.c149
1 files changed, 0 insertions, 149 deletions
diff --git a/contrib/ffmpeg/libavformat/tta.c b/contrib/ffmpeg/libavformat/tta.c
deleted file mode 100644
index 2cd0101f1..000000000
--- a/contrib/ffmpeg/libavformat/tta.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * TTA demuxer
- * Copyright (c) 2006 Alex Beregszaszi
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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,
- * 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
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include "avformat.h"
-#include "bitstream.h"
-
-typedef struct {
- int totalframes, currentframe;
-} TTAContext;
-
-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;
-}
-
-static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
-{
- TTAContext *c = s->priv_data;
- AVStream *st;
- int i, channels, bps, samplerate, datalen, framelen;
- uint64_t framepos;
-
- if (get_le32(s->pb) != ff_get_fourcc("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);
- if(samplerate <= 0 || samplerate > 1000000){
- av_log(s, AV_LOG_ERROR, "nonsense samplerate\n");
- return -1;
- }
-
- datalen = get_le32(s->pb);
- if(datalen < 0){
- av_log(s, AV_LOG_ERROR, "nonsense datalen\n");
- return -1;
- }
-
- url_fskip(s->pb, 4); // header crc
-
- framelen = samplerate*256/245;
- c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
- c->currentframe = 0;
-
- if(c->totalframes >= UINT_MAX/sizeof(uint32_t)){
- av_log(s, AV_LOG_ERROR, "totalframes too large\n");
- return -1;
- }
-
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR(ENOMEM);
-
- av_set_pts_info(st, 64, 1, samplerate);
- st->start_time = 0;
- st->duration = datalen;
-
- framepos = url_ftell(s->pb) + 4*c->totalframes + 4;
-
- for (i = 0; i < c->totalframes; i++) {
- uint32_t size = get_le32(s->pb);
- av_add_index_entry(st, framepos, i*framelen, size, 0, AVINDEX_KEYFRAME);
- framepos += size;
- }
- url_fskip(s->pb, 4); // seektable crc
-
- st->codec->codec_type = CODEC_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->extradata_size = url_ftell(s->pb);
- if(st->codec->extradata_size+FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){
- //this check is redundant as get_buffer 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);
-
- return 0;
-}
-
-static int tta_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- TTAContext *c = s->priv_data;
- AVStream *st = s->streams[0];
- int size, ret;
-
- // FIXME!
- if (c->currentframe > c->totalframes)
- return -1;
-
- size = st->index_entries[c->currentframe].size;
-
- ret = av_get_packet(s->pb, pkt, size);
- pkt->dts = st->index_entries[c->currentframe++].timestamp;
- return ret;
-}
-
-static int tta_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
-{
- TTAContext *c = s->priv_data;
- AVStream *st = s->streams[stream_index];
- int index = av_index_search_timestamp(st, timestamp, flags);
- if (index < 0)
- return -1;
-
- c->currentframe = index;
- url_fseek(s->pb, st->index_entries[index].pos, SEEK_SET);
-
- return 0;
-}
-
-AVInputFormat tta_demuxer = {
- "tta",
- "true-audio",
- sizeof(TTAContext),
- tta_probe,
- tta_read_header,
- tta_read_packet,
- NULL,
- tta_read_seek,
- .extensions = "tta",
-};