/*
  * RAW video demuxer
  * Copyright (c) 2001 Fabrice Bellard
  *
  * 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 "rawdec.h"

 
 static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
     int packet_size, ret, width, height;
     AVStream *st = s->streams[0];
 
     width = st->codec->width;
     height = st->codec->height;
 
     packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
     if (packet_size < 0)
         return -1;
 
     ret= av_get_packet(s->pb, pkt, packet_size);
     pkt->pts=
     pkt->dts= pkt->pos / packet_size;
 
     pkt->stream_index = 0;
     if (ret < 0)
         return ret;
     return 0;
 }
 

 #define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x)
 #define DEC AV_OPT_FLAG_DECODING_PARAM
 static const AVOption rawvideo_options[] = {

     { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
     { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "yuv420p"}, 0, 0, DEC },
     { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },

     { NULL },
 };
 
 static const AVClass rawvideo_demuxer_class = {
     .class_name = "rawvideo demuxer",
     .item_name  = av_default_item_name,
     .option     = rawvideo_options,
     .version    = LIBAVUTIL_VERSION_INT,
 };
 

 AVInputFormat ff_rawvideo_demuxer = {

     .name           = "rawvideo",

     .long_name      = NULL_IF_CONFIG_SMALL("raw video"),

     .priv_data_size = sizeof(FFRawVideoDemuxerContext),
     .read_header    = ff_raw_read_header,
     .read_packet    = rawvideo_read_packet,

     .flags          = AVFMT_GENERIC_INDEX,
     .extensions     = "yuv,cif,qcif,rgb",

     .raw_codec_id   = AV_CODEC_ID_RAWVIDEO,

     .priv_class     = &rawvideo_demuxer_class,

 };