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authorTim Redfern <tim@eclectronics.org>2013-09-05 17:55:35 +0100
committerTim Redfern <tim@eclectronics.org>2013-09-05 17:55:35 +0100
commit741fb4b9e135cfb161a749db88713229038577bb (patch)
tree08bc9925659cbcac45162bacf31dc6336d4f60b4 /ffmpeg1/libavformat/takdec.c
parenta2e1bf3495b7bfefdaedb8fc737e969ab06df079 (diff)
making act segmenter
Diffstat (limited to 'ffmpeg1/libavformat/takdec.c')
-rw-r--r--ffmpeg1/libavformat/takdec.c185
1 files changed, 0 insertions, 185 deletions
diff --git a/ffmpeg1/libavformat/takdec.c b/ffmpeg1/libavformat/takdec.c
deleted file mode 100644
index 377c10c..0000000
--- a/ffmpeg1/libavformat/takdec.c
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
- * Raw TAK demuxer
- * Copyright (c) 2012 Paul B Mahol
- *
- * 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 "libavcodec/tak.h"
-#include "avformat.h"
-#include "internal.h"
-#include "rawdec.h"
-#include "apetag.h"
-
-typedef struct TAKDemuxContext {
- int mlast_frame;
- int64_t data_end;
-} TAKDemuxContext;
-
-static int tak_probe(AVProbeData *p)
-{
- if (!memcmp(p->buf, "tBaK", 4))
- return AVPROBE_SCORE_MAX / 2;
- return 0;
-}
-
-static int tak_read_header(AVFormatContext *s)
-{
- TAKDemuxContext *tc = s->priv_data;
- AVIOContext *pb = s->pb;
- GetBitContext gb;
- AVStream *st;
- uint8_t *buffer = NULL;
- int ret;
-
- st = avformat_new_stream(s, 0);
- if (!st)
- return AVERROR(ENOMEM);
-
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = AV_CODEC_ID_TAK;
- st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
-
- tc->mlast_frame = 0;
- if (avio_rl32(pb) != MKTAG('t', 'B', 'a', 'K')) {
- avio_seek(pb, -4, SEEK_CUR);
- return 0;
- }
-
- while (!url_feof(pb)) {
- enum TAKMetaDataType type;
- int size;
-
- type = avio_r8(pb) & 0x7f;
- size = avio_rl24(pb);
-
- switch (type) {
- case TAK_METADATA_STREAMINFO:
- case TAK_METADATA_LAST_FRAME:
- case TAK_METADATA_ENCODER:
- buffer = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!buffer)
- return AVERROR(ENOMEM);
-
- if (avio_read(pb, buffer, size) != size) {
- av_freep(&buffer);
- return AVERROR(EIO);
- }
-
- init_get_bits(&gb, buffer, size * 8);
- break;
- case TAK_METADATA_MD5: {
- uint8_t md5[16];
- int i;
-
- if (size != 19)
- return AVERROR_INVALIDDATA;
- avio_read(pb, md5, 16);
- avio_skip(pb, 3);
- av_log(s, AV_LOG_VERBOSE, "MD5=");
- for (i = 0; i < 16; i++)
- av_log(s, AV_LOG_VERBOSE, "%02x", md5[i]);
- av_log(s, AV_LOG_VERBOSE, "\n");
- break;
- }
- case TAK_METADATA_END: {
- int64_t curpos = avio_tell(pb);
-
- if (pb->seekable) {
- ff_ape_parse_tag(s);
- avio_seek(pb, curpos, SEEK_SET);
- }
-
- tc->data_end += curpos;
- return 0;
- }
- default:
- ret = avio_skip(pb, size);
- if (ret < 0)
- return ret;
- }
-
- if (type == TAK_METADATA_STREAMINFO) {
- TAKStreamInfo ti;
-
- avpriv_tak_parse_streaminfo(&gb, &ti);
- if (ti.samples > 0)
- st->duration = ti.samples;
- st->codec->bits_per_coded_sample = ti.bps;
- if (ti.ch_layout)
- st->codec->channel_layout = ti.ch_layout;
- st->codec->sample_rate = ti.sample_rate;
- st->codec->channels = ti.channels;
- st->start_time = 0;
- avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
- st->codec->extradata = buffer;
- st->codec->extradata_size = size;
- buffer = NULL;
- } else if (type == TAK_METADATA_LAST_FRAME) {
- if (size != 11)
- return AVERROR_INVALIDDATA;
- tc->mlast_frame = 1;
- tc->data_end = get_bits64(&gb, TAK_LAST_FRAME_POS_BITS) +
- get_bits(&gb, TAK_LAST_FRAME_SIZE_BITS);
- av_freep(&buffer);
- } else if (type == TAK_METADATA_ENCODER) {
- av_log(s, AV_LOG_VERBOSE, "encoder version: %0X\n",
- get_bits_long(&gb, TAK_ENCODER_VERSION_BITS));
- av_freep(&buffer);
- }
- }
-
- return AVERROR_EOF;
-}
-
-static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- TAKDemuxContext *tc = s->priv_data;
- int ret;
-
- if (tc->mlast_frame) {
- AVIOContext *pb = s->pb;
- int64_t size, left;
-
- left = tc->data_end - avio_tell(s->pb);
- size = FFMIN(left, 1024);
- if (size <= 0)
- return AVERROR_EOF;
-
- ret = av_get_packet(pb, pkt, size);
- if (ret < 0)
- return ret;
-
- pkt->stream_index = 0;
- } else {
- ret = ff_raw_read_partial_packet(s, pkt);
- }
-
- return ret;
-}
-
-AVInputFormat ff_tak_demuxer = {
- .name = "tak",
- .long_name = NULL_IF_CONFIG_SMALL("raw TAK"),
- .priv_data_size = sizeof(TAKDemuxContext),
- .read_probe = tak_probe,
- .read_header = tak_read_header,
- .read_packet = raw_read_packet,
- .flags = AVFMT_GENERIC_INDEX,
- .extensions = "tak",
- .raw_codec_id = AV_CODEC_ID_TAK,
-};