0,0 → 1,177 |
/* |
* RAW demuxers |
* Copyright (c) 2001 Fabrice Bellard |
* Copyright (c) 2005 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 "internal.h" |
#include "avio_internal.h" |
#include "rawdec.h" |
#include "libavutil/opt.h" |
#include "libavutil/parseutils.h" |
#include "libavutil/pixdesc.h" |
#include "libavutil/avassert.h" |
|
#define RAW_PACKET_SIZE 1024 |
|
int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt) |
{ |
int ret, size; |
|
size = RAW_PACKET_SIZE; |
|
if (av_new_packet(pkt, size) < 0) |
return AVERROR(ENOMEM); |
|
pkt->pos= avio_tell(s->pb); |
pkt->stream_index = 0; |
ret = ffio_read_partial(s->pb, pkt->data, size); |
if (ret < 0) { |
av_free_packet(pkt); |
return ret; |
} |
av_shrink_packet(pkt, ret); |
return ret; |
} |
|
int ff_raw_audio_read_header(AVFormatContext *s) |
{ |
AVStream *st = avformat_new_stream(s, NULL); |
if (!st) |
return AVERROR(ENOMEM); |
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
st->codec->codec_id = s->iformat->raw_codec_id; |
st->need_parsing = AVSTREAM_PARSE_FULL_RAW; |
st->start_time = 0; |
/* the parameters will be extracted from the compressed bitstream */ |
|
return 0; |
} |
|
/* MPEG-1/H.263 input */ |
int ff_raw_video_read_header(AVFormatContext *s) |
{ |
AVStream *st; |
FFRawVideoDemuxerContext *s1 = s->priv_data; |
int ret = 0; |
|
|
st = avformat_new_stream(s, NULL); |
if (!st) { |
ret = AVERROR(ENOMEM); |
goto fail; |
} |
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
st->codec->codec_id = s->iformat->raw_codec_id; |
st->need_parsing = AVSTREAM_PARSE_FULL_RAW; |
|
st->codec->time_base = av_inv_q(s1->framerate); |
avpriv_set_pts_info(st, 64, 1, 1200000); |
|
fail: |
return ret; |
} |
|
static int ff_raw_data_read_header(AVFormatContext *s) |
{ |
AVStream *st = avformat_new_stream(s, NULL); |
if (!st) |
return AVERROR(ENOMEM); |
st->codec->codec_type = AVMEDIA_TYPE_DATA; |
st->codec->codec_id = s->iformat->raw_codec_id; |
st->start_time = 0; |
return 0; |
} |
|
/* Note: Do not forget to add new entries to the Makefile as well. */ |
|
#define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x) |
#define DEC AV_OPT_FLAG_DECODING_PARAM |
const AVOption ff_rawvideo_options[] = { |
{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC}, |
{ NULL }, |
}; |
|
#if CONFIG_DATA_DEMUXER |
AVInputFormat ff_data_demuxer = { |
.name = "data", |
.long_name = NULL_IF_CONFIG_SMALL("raw data"), |
.read_header = ff_raw_data_read_header, |
.read_packet = ff_raw_read_partial_packet, |
.raw_codec_id = AV_CODEC_ID_NONE, |
}; |
#endif |
|
#if CONFIG_LATM_DEMUXER |
AVInputFormat ff_latm_demuxer = { |
.name = "latm", |
.long_name = NULL_IF_CONFIG_SMALL("raw LOAS/LATM"), |
.read_header = ff_raw_audio_read_header, |
.read_packet = ff_raw_read_partial_packet, |
.flags = AVFMT_GENERIC_INDEX, |
.extensions = "latm", |
.raw_codec_id = AV_CODEC_ID_AAC_LATM, |
}; |
#endif |
|
#if CONFIG_MJPEG_DEMUXER |
FF_DEF_RAWVIDEO_DEMUXER(mjpeg, "raw MJPEG video", NULL, "mjpg,mjpeg,mpo", AV_CODEC_ID_MJPEG) |
#endif |
|
#if CONFIG_MLP_DEMUXER |
AVInputFormat ff_mlp_demuxer = { |
.name = "mlp", |
.long_name = NULL_IF_CONFIG_SMALL("raw MLP"), |
.read_header = ff_raw_audio_read_header, |
.read_packet = ff_raw_read_partial_packet, |
.flags = AVFMT_GENERIC_INDEX, |
.extensions = "mlp", |
.raw_codec_id = AV_CODEC_ID_MLP, |
}; |
#endif |
|
#if CONFIG_TRUEHD_DEMUXER |
AVInputFormat ff_truehd_demuxer = { |
.name = "truehd", |
.long_name = NULL_IF_CONFIG_SMALL("raw TrueHD"), |
.read_header = ff_raw_audio_read_header, |
.read_packet = ff_raw_read_partial_packet, |
.flags = AVFMT_GENERIC_INDEX, |
.extensions = "thd", |
.raw_codec_id = AV_CODEC_ID_TRUEHD, |
}; |
#endif |
|
#if CONFIG_SHORTEN_DEMUXER |
AVInputFormat ff_shorten_demuxer = { |
.name = "shn", |
.long_name = NULL_IF_CONFIG_SMALL("raw Shorten"), |
.read_header = ff_raw_audio_read_header, |
.read_packet = ff_raw_read_partial_packet, |
.flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK, |
.extensions = "shn", |
.raw_codec_id = AV_CODEC_ID_SHORTEN, |
}; |
#endif |
|
#if CONFIG_VC1_DEMUXER |
FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", AV_CODEC_ID_VC1) |
#endif |