| /* |
| * 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, AVFormatParameters *ap) |
| { |
| AVStream *st; |
| enum CodecID id; |
| |
| st = avformat_new_stream(s, NULL); |
| if (!st) |
| return AVERROR(ENOMEM); |
| |
| id = s->iformat->value; |
| 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, |
| AVFormatParameters *ap) |
| { |
| 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->value; |
| 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, |
| AVFormatParameters *ap) |
| { |
| 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->value; |
| 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", |
| .value = 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", |
| .value = 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", |
| .value = 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", |
| .value = 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", |
| .value = CODEC_ID_SHORTEN, |
| }; |
| #endif |
| |
| #if CONFIG_VC1_DEMUXER |
| FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", CODEC_ID_VC1) |
| #endif |
