/*
  * id RoQ (.roq) File muxer
  * Copyright (c) 2007 Vitor Sessak
  *
  * 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 "rawenc.h"

 
 
 static int roq_write_header(struct AVFormatContext *s)
 {

     uint8_t header[] = {
         0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, /* fps: */ 0x1E, 0x00

     };

     int n;
 
 // set the actual fps
     for(n=0;n<s->nb_streams;n++) {

         if (s->streams[n]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {

             unsigned int fps;
 

             if (s->streams[n]->avg_frame_rate.den != 1) {
                 av_log(s, AV_LOG_ERROR, "Frame rate must be integer\n");

                 return AVERROR(EINVAL);
             }
 

             if ((fps=s->streams[n]->avg_frame_rate.num) > 255) {
                 av_log(s, AV_LOG_ERROR, "Frame rate may not exceed 255fps\n");

                 return AVERROR(EINVAL);
             }
 
             if (fps != 30) {

                 av_log(s, AV_LOG_WARNING, "For vintage compatibility fps must be 30\n");

             }
 
             header[6] = fps;
             break;
         }
     }

     avio_write(s->pb, header, 8);

     avio_flush(s->pb);

 
     return 0;
 }
 

 AVOutputFormat ff_roq_muxer = {

     .name         = "roq",

     .long_name    = NULL_IF_CONFIG_SMALL("raw id RoQ"),

     .extensions   = "roq",

     .audio_codec  = AV_CODEC_ID_ROQ_DPCM,
     .video_codec  = AV_CODEC_ID_ROQ,

     .write_header = roq_write_header,
     .write_packet = ff_raw_write_packet,

 };