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FFmpeg/libavformat/rawdec.c
Michael Niedermayer a369a6b858 Merge remote-tracking branch 'qatar/master'
* qatar/master: (29 commits)
  fate: add golomb-test
  golomb-test: K&R formatting cosmetics
  h264: Split h264-test off into a separate file - golomb-test.c.
  h264-test: cleanup: drop timer invocations, commented out code and other cruft
  h264-test: Remove unused DSP and AVCodec contexts and related init calls.
  adpcm: Add missing stdint.h #include to fix standalone header compilation.
  lavf: add functions for accessing the fourcc<->CodecID mapping tables.
  lavc: set AVCodecContext.codec in avcodec_get_context_defaults3().
  lavc: make avcodec_close() work properly on unopened codecs.
  lavc: add avcodec_is_open().
  lavf: rename AVInputFormat.value to raw_codec_id.
  lavf: remove the pointless value field from flv and iv8
  lavc/lavf: remove unnecessary symbols from the symbol version script.
  lavc: reorder AVCodec fields.
  lavf: reorder AVInput/OutputFormat fields.
  mp3dec: Fix a heap-buffer-overflow
  adpcmenc: remove some unneeded casts
  adpcmenc: use int16_t and uint8_t instead of short and unsigned char.
  adpcmenc: fix adpcm_ms extradata allocation
  adpcmenc: return proper AVERROR codes instead of -1
  ...

Conflicts:
	doc/APIchanges
	libavcodec/Makefile
	libavcodec/adpcmenc.c
	libavcodec/avcodec.h
	libavcodec/h264.c
	libavcodec/libavcodec.v
	libavcodec/mpc7.c
	libavcodec/mpegaudiodec.c
	libavcodec/options.c
	libavformat/Makefile
	libavformat/avformat.h
	libavformat/flvdec.c
	libavformat/libavformat.v

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-02-01 02:36:09 +01:00

250 lines
7.5 KiB
C

/*
* 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"
/* raw input */
int ff_raw_read_header(AVFormatContext *s)
{
AVStream *st;
enum CodecID id;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
id = s->iformat->raw_codec_id;
if (id == CODEC_ID_RAWVIDEO) {
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
} else {
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
}
st->codec->codec_id = id;
switch(st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO: {
RawAudioDemuxerContext *s1 = s->priv_data;
st->codec->channels = 1;
if (id == CODEC_ID_ADPCM_G722)
st->codec->sample_rate = 16000;
if (s1 && s1->sample_rate)
st->codec->sample_rate = s1->sample_rate;
if (st->codec->sample_rate <= 0) {
av_log(s, AV_LOG_WARNING, "Invalid sample rate %d specified using default of 44100\n",
st->codec->sample_rate);
st->codec->sample_rate= 44100;
}
if (s1 && s1->channels)
st->codec->channels = s1->channels;
st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
assert(st->codec->bits_per_coded_sample > 0);
st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
break;
}
case AVMEDIA_TYPE_VIDEO: {
FFRawVideoDemuxerContext *s1 = s->priv_data;
int width = 0, height = 0, ret = 0;
enum PixelFormat pix_fmt;
AVRational framerate;
if (s1->video_size && (ret = av_parse_video_size(&width, &height, s1->video_size)) < 0) {
av_log(s, AV_LOG_ERROR, "Couldn't parse video size.\n");
goto fail;
}
if ((pix_fmt = av_get_pix_fmt(s1->pixel_format)) == PIX_FMT_NONE) {
av_log(s, AV_LOG_ERROR, "No such pixel format: %s.\n", s1->pixel_format);
ret = AVERROR(EINVAL);
goto fail;
}
if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
goto fail;
}
avpriv_set_pts_info(st, 64, framerate.den, framerate.num);
st->codec->width = width;
st->codec->height = height;
st->codec->pix_fmt = pix_fmt;
fail:
return ret;
}
default:
return -1;
}
return 0;
}
#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;
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;
AVRational framerate;
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;
if ((ret = av_parse_video_rate(&framerate, s1->framerate)) < 0) {
av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s1->framerate);
goto fail;
}
st->codec->time_base = (AVRational){framerate.den, framerate.num};
avpriv_set_pts_info(st, 64, 1, 1200000);
fail:
return ret;
}
/* 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_STRING, {.str = "25"}, 0, 0, DEC},
{ NULL },
};
#if CONFIG_G722_DEMUXER
AVInputFormat ff_g722_demuxer = {
.name = "g722",
.long_name = NULL_IF_CONFIG_SMALL("raw G.722"),
.read_header = ff_raw_read_header,
.read_packet = ff_raw_read_partial_packet,
.flags= AVFMT_GENERIC_INDEX,
.extensions = "g722,722",
.raw_codec_id = CODEC_ID_ADPCM_G722,
};
#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 = CODEC_ID_AAC_LATM,
};
#endif
#if CONFIG_MJPEG_DEMUXER
FF_DEF_RAWVIDEO_DEMUXER(mjpeg, "raw MJPEG video", NULL, "mjpg,mjpeg,mpo", 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 = 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 = 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 = CODEC_ID_SHORTEN,
};
#endif
#if CONFIG_VC1_DEMUXER
FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", CODEC_ID_VC1)
#endif