mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-24 03:39:45 +00:00
6f69f7a8bf
* commit '9200514ad8717c63f82101dc394f4378854325bf':
lavf: replace AVStream.codec with AVStream.codecpar
This has been a HUGE effort from:
- Derek Buitenhuis <derek.buitenhuis@gmail.com>
- Hendrik Leppkes <h.leppkes@gmail.com>
- wm4 <nfxjfg@googlemail.com>
- Clément Bœsch <clement@stupeflix.com>
- James Almer <jamrial@gmail.com>
- Michael Niedermayer <michael@niedermayer.cc>
- Rostislav Pehlivanov <atomnuker@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/*
|
|
* XVAG demuxer
|
|
* Copyright (c) 2015 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 "libavutil/bswap.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
|
|
static int xvag_probe(AVProbeData *p)
|
|
{
|
|
if (memcmp(p->buf, "XVAG", 4) ||
|
|
memcmp(p->buf+32, "fmat", 4))
|
|
return 0;
|
|
|
|
return AVPROBE_SCORE_MAX;
|
|
}
|
|
|
|
static int xvag_read_header(AVFormatContext *s)
|
|
{
|
|
unsigned offset, big_endian, codec;
|
|
AVStream *st;
|
|
|
|
avio_skip(s->pb, 4);
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
|
|
offset = avio_rl32(s->pb);
|
|
big_endian = offset > av_bswap32(offset);
|
|
if (big_endian) {
|
|
offset = av_bswap32(offset);
|
|
avio_skip(s->pb, 28);
|
|
codec = avio_rb32(s->pb);
|
|
st->codecpar->channels = avio_rb32(s->pb);
|
|
avio_skip(s->pb, 4);
|
|
st->duration = avio_rb32(s->pb);
|
|
avio_skip(s->pb, 8);
|
|
st->codecpar->sample_rate = avio_rb32(s->pb);
|
|
} else {
|
|
avio_skip(s->pb, 28);
|
|
codec = avio_rl32(s->pb);
|
|
st->codecpar->channels = avio_rl32(s->pb);
|
|
avio_skip(s->pb, 4);
|
|
st->duration = avio_rl32(s->pb);
|
|
avio_skip(s->pb, 8);
|
|
st->codecpar->sample_rate = avio_rl32(s->pb);
|
|
}
|
|
|
|
if (st->codecpar->sample_rate <= 0)
|
|
return AVERROR_INVALIDDATA;
|
|
if (st->codecpar->channels <= 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
switch (codec) {
|
|
case 0x1c:
|
|
st->codecpar->codec_id = AV_CODEC_ID_ADPCM_PSX;
|
|
st->codecpar->block_align = 16 * st->codecpar->channels;
|
|
break;
|
|
default:
|
|
avpriv_request_sample(s, "codec %X", codec);
|
|
return AVERROR_PATCHWELCOME;
|
|
};
|
|
|
|
avio_skip(s->pb, offset - avio_tell(s->pb));
|
|
|
|
if (avio_rb16(s->pb) == 0xFFFB) {
|
|
st->codecpar->codec_id = AV_CODEC_ID_MP3;
|
|
st->codecpar->block_align = 0x1000;
|
|
st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
|
|
}
|
|
|
|
avio_skip(s->pb, -2);
|
|
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xvag_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
AVCodecParameters *par = s->streams[0]->codecpar;
|
|
|
|
return av_get_packet(s->pb, pkt, par->block_align);
|
|
}
|
|
|
|
AVInputFormat ff_xvag_demuxer = {
|
|
.name = "xvag",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Sony PS3 XVAG"),
|
|
.read_probe = xvag_probe,
|
|
.read_header = xvag_read_header,
|
|
.read_packet = xvag_read_packet,
|
|
.extensions = "xvag",
|
|
};
|