yading@11: /* yading@11: * RAW demuxers yading@11: * Copyright (c) 2001 Fabrice Bellard yading@11: * Copyright (c) 2005 Alex Beregszaszi yading@11: * yading@11: * This file is part of FFmpeg. yading@11: * yading@11: * FFmpeg is free software; you can redistribute it and/or yading@11: * modify it under the terms of the GNU Lesser General Public yading@11: * License as published by the Free Software Foundation; either yading@11: * version 2.1 of the License, or (at your option) any later version. yading@11: * yading@11: * FFmpeg is distributed in the hope that it will be useful, yading@11: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@11: * Lesser General Public License for more details. yading@11: * yading@11: * You should have received a copy of the GNU Lesser General Public yading@11: * License along with FFmpeg; if not, write to the Free Software yading@11: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@11: */ yading@11: yading@11: #include "avformat.h" yading@11: #include "internal.h" yading@11: #include "avio_internal.h" yading@11: #include "rawdec.h" yading@11: #include "libavutil/opt.h" yading@11: #include "libavutil/parseutils.h" yading@11: #include "libavutil/pixdesc.h" yading@11: #include "libavutil/avassert.h" yading@11: yading@11: #define RAW_PACKET_SIZE 1024 yading@11: yading@11: int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt) yading@11: { yading@11: int ret, size; yading@11: yading@11: size = RAW_PACKET_SIZE; yading@11: yading@11: if (av_new_packet(pkt, size) < 0) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: pkt->pos= avio_tell(s->pb); yading@11: pkt->stream_index = 0; yading@11: ret = ffio_read_partial(s->pb, pkt->data, size); yading@11: if (ret < 0) { yading@11: av_free_packet(pkt); yading@11: return ret; yading@11: } yading@11: av_shrink_packet(pkt, ret); yading@11: return ret; yading@11: } yading@11: yading@11: int ff_raw_audio_read_header(AVFormatContext *s) yading@11: { yading@11: AVStream *st = avformat_new_stream(s, NULL); yading@11: if (!st) yading@11: return AVERROR(ENOMEM); yading@11: st->codec->codec_type = AVMEDIA_TYPE_AUDIO; yading@11: st->codec->codec_id = s->iformat->raw_codec_id; yading@11: st->need_parsing = AVSTREAM_PARSE_FULL_RAW; yading@11: st->start_time = 0; yading@11: /* the parameters will be extracted from the compressed bitstream */ yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: /* MPEG-1/H.263 input */ yading@11: int ff_raw_video_read_header(AVFormatContext *s) yading@11: { yading@11: AVStream *st; yading@11: FFRawVideoDemuxerContext *s1 = s->priv_data; yading@11: int ret = 0; yading@11: yading@11: yading@11: st = avformat_new_stream(s, NULL); yading@11: if (!st) { yading@11: ret = AVERROR(ENOMEM); yading@11: goto fail; yading@11: } yading@11: yading@11: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; yading@11: st->codec->codec_id = s->iformat->raw_codec_id; yading@11: st->need_parsing = AVSTREAM_PARSE_FULL_RAW; yading@11: yading@11: st->codec->time_base = av_inv_q(s1->framerate); yading@11: avpriv_set_pts_info(st, 64, 1, 1200000); yading@11: yading@11: fail: yading@11: return ret; yading@11: } yading@11: yading@11: /* Note: Do not forget to add new entries to the Makefile as well. */ yading@11: yading@11: #define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x) yading@11: #define DEC AV_OPT_FLAG_DECODING_PARAM yading@11: const AVOption ff_rawvideo_options[] = { yading@11: { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC}, yading@11: { NULL }, yading@11: }; yading@11: yading@11: #if CONFIG_LATM_DEMUXER yading@11: AVInputFormat ff_latm_demuxer = { yading@11: .name = "latm", yading@11: .long_name = NULL_IF_CONFIG_SMALL("raw LOAS/LATM"), yading@11: .read_header = ff_raw_audio_read_header, yading@11: .read_packet = ff_raw_read_partial_packet, yading@11: .flags = AVFMT_GENERIC_INDEX, yading@11: .extensions = "latm", yading@11: .raw_codec_id = AV_CODEC_ID_AAC_LATM, yading@11: }; yading@11: #endif yading@11: yading@11: #if CONFIG_MJPEG_DEMUXER yading@11: FF_DEF_RAWVIDEO_DEMUXER(mjpeg, "raw MJPEG video", NULL, "mjpg,mjpeg,mpo", AV_CODEC_ID_MJPEG) yading@11: #endif yading@11: yading@11: #if CONFIG_MLP_DEMUXER yading@11: AVInputFormat ff_mlp_demuxer = { yading@11: .name = "mlp", yading@11: .long_name = NULL_IF_CONFIG_SMALL("raw MLP"), yading@11: .read_header = ff_raw_audio_read_header, yading@11: .read_packet = ff_raw_read_partial_packet, yading@11: .flags = AVFMT_GENERIC_INDEX, yading@11: .extensions = "mlp", yading@11: .raw_codec_id = AV_CODEC_ID_MLP, yading@11: }; yading@11: #endif yading@11: yading@11: #if CONFIG_TRUEHD_DEMUXER yading@11: AVInputFormat ff_truehd_demuxer = { yading@11: .name = "truehd", yading@11: .long_name = NULL_IF_CONFIG_SMALL("raw TrueHD"), yading@11: .read_header = ff_raw_audio_read_header, yading@11: .read_packet = ff_raw_read_partial_packet, yading@11: .flags = AVFMT_GENERIC_INDEX, yading@11: .extensions = "thd", yading@11: .raw_codec_id = AV_CODEC_ID_TRUEHD, yading@11: }; yading@11: #endif yading@11: yading@11: #if CONFIG_SHORTEN_DEMUXER yading@11: AVInputFormat ff_shorten_demuxer = { yading@11: .name = "shn", yading@11: .long_name = NULL_IF_CONFIG_SMALL("raw Shorten"), yading@11: .read_header = ff_raw_audio_read_header, yading@11: .read_packet = ff_raw_read_partial_packet, yading@11: .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK, yading@11: .extensions = "shn", yading@11: .raw_codec_id = AV_CODEC_ID_SHORTEN, yading@11: }; yading@11: #endif yading@11: yading@11: #if CONFIG_VC1_DEMUXER yading@11: FF_DEF_RAWVIDEO_DEMUXER(vc1, "raw VC-1", NULL, "vc1", AV_CODEC_ID_VC1) yading@11: #endif