/*
  * a64 muxer
  * Copyright (c) 2009 Tobias Bindhammer
  *
  * 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 "libavcodec/avcodec.h"
 #include "libavcodec/bytestream.h"
 #include "avformat.h"

 #include "rawenc.h"

 static int a64_write_header(AVFormatContext *s)

 {

     AVCodecParameters *par = s->streams[0]->codecpar;

     uint8_t header[5] = {
         0x00, //load
         0x40, //address
         0x00, //mode
         0x00, //charset_lifetime (multi only)
         0x00  //fps in 50/fps;
     };

     if (par->extradata_size < 4) {

         av_log(s, AV_LOG_ERROR, "Missing extradata\n");

         return AVERROR_INVALIDDATA;

     }
 

     switch (par->codec_id) {

     case AV_CODEC_ID_A64_MULTI:

         header[2] = 0x00;

         header[3] = AV_RB32(par->extradata+0);

         header[4] = 2;
         break;

     case AV_CODEC_ID_A64_MULTI5:

         header[2] = 0x01;

         header[3] = AV_RB32(par->extradata+0);

         header[4] = 3;
         break;
     default:

         return AVERROR_INVALIDDATA;

     }

     avio_write(s->pb, header, 2);

     return 0;
 }
 

 AVOutputFormat ff_a64_muxer = {

     .name           = "a64",
     .long_name      = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
     .extensions     = "a64, A64",

     .video_codec    = AV_CODEC_ID_A64_MULTI,

     .write_header   = a64_write_header,

     .write_packet   = ff_raw_write_packet,

 };