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