1/* 2 * RAW video demuxer 3 * Copyright (c) 2001 Fabrice Bellard 4 * 5 * This file is part of Libav. 6 * 7 * Libav is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * Libav is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with Libav; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "avformat.h" 23#include "rawdec.h" 24 25static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt) 26{ 27 int packet_size, ret, width, height; 28 AVStream *st = s->streams[0]; 29 30 width = st->codec->width; 31 height = st->codec->height; 32 33 packet_size = avpicture_get_size(st->codec->pix_fmt, width, height); 34 if (packet_size < 0) 35 return -1; 36 37 ret= av_get_packet(s->pb, pkt, packet_size); 38 pkt->pts= 39 pkt->dts= pkt->pos / packet_size; 40 41 pkt->stream_index = 0; 42 if (ret < 0) 43 return ret; 44 return 0; 45} 46 47#define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x) 48#define DEC AV_OPT_FLAG_DECODING_PARAM 49static const AVOption rawvideo_options[] = { 50 { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, 51 { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "yuv420p"}, 0, 0, DEC }, 52 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC }, 53 { NULL }, 54}; 55 56static const AVClass rawvideo_demuxer_class = { 57 .class_name = "rawvideo demuxer", 58 .item_name = av_default_item_name, 59 .option = rawvideo_options, 60 .version = LIBAVUTIL_VERSION_INT, 61}; 62 63AVInputFormat ff_rawvideo_demuxer = { 64 .name = "rawvideo", 65 .long_name = NULL_IF_CONFIG_SMALL("raw video format"), 66 .priv_data_size = sizeof(FFRawVideoDemuxerContext), 67 .read_header = ff_raw_read_header, 68 .read_packet = rawvideo_read_packet, 69 .flags= AVFMT_GENERIC_INDEX, 70 .extensions = "yuv,cif,qcif,rgb", 71 .value = CODEC_ID_RAWVIDEO, 72 .priv_class = &rawvideo_demuxer_class, 73}; 74