/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

### File Specific:
   main-programmer: David Hasenfratz, Stephan Lienhard
   co-programmer:
*/



/* this is for debug output. It just says, that all calls to PRINT() belong to the DEBUG_MODULE_MEDIA module
   For more information refere to https://www.orxonox.net/cgi-bin/trac.cgi/wiki/DebugOutput
*/
#define DEBUG_MODULE_MEDIA


/* include your own header */
#include "media_container.h"

/* header for debug output */
#include "debug.h"


/**
 * Default constructor
 */
MediaContainer::MediaContainer(const char* filename)
{
  /* set the class id for the base object */
  this->setClassID(CL_MEDIA_CONTAINER, "MediaContainer");

  /* register all formats and codecs */
  av_register_all();

  current_frame = 0;
  num_frames = 0;

  if (filename != NULL)
    this->loadMedia(filename);

}

/**
 * Default destructor
 */
MediaContainer::~MediaContainer()
{

  /* Free the frame */
  av_free(frame);

  /* Close the codec */
  avcodec_close(codec_context);

  /* Close the video file */
  av_close_input_file(format_context);

}

/*GLuint MediaContainer::getFrame(int frame_number)
{

}

GLuint MediaContainer::getNextFrame()
{

}*/

SDL_Surface* MediaContainer::getFrame(int frame_number)
{
  SDL_Surface* frame;


  return frame;
}

SDL_Surface* MediaContainer::getNextFrame()
{
  current_frame++;
  return this->getFrame(current_frame);
}

void MediaContainer::loadMedia(const char* filename)
{
  /* Open video file */
  if (av_open_input_file(&format_context, filename, NULL, 0, NULL) !=0 )
    PRINTF(1)("Could not open %s\n", filename);

  /* Retrieve stream information */
  if (av_find_stream_info(format_context) < 0)
    PRINTF(1)("Could not find stream information in %s\n", filename); 

  // Dump information about file onto standard error
  //dump_format(pFormatCtx, 0, argv[1], false);

  /* Find the first video stream and take it */
  video_stream = -1;
  for(int i = 0; i < format_context->nb_streams; i++)
  {
    // NOTE: different code for the 0.4.9-pre1 release of ffmpeg (tardis)
    // if(format_context->streams[i]->codec.codec_type == CODEC_TYPE_VIDEO)		
    if(format_context->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO)
    {
      video_stream = i;
      break;
    }
  }
  
  if(video_stream == -1)
    PRINTF(1)("Could not find a video stream in %s\n", filename);

  /* Get a pointer to the codec context for the video stream */
  // NOTE: different code for the 0.4.9-pre1 release of ffmpeg (tardis)
  // codec_context = &format_context->streams[video_stream]->codec;
  codec_context = format_context->streams[video_stream]->codec;

  /* Find the decoder for the video stream */
  codec = avcodec_find_decoder(codec_context->codec_id);
  if (codec == NULL)
    PRINTF(1)("Could not find codec\n");

  /* Open codec */
  if (avcodec_open(codec_context, codec) < 0)
    PRINTF(1)("Could not open codec\n");	

}

int MediaContainer::getHeight()
{

}

int MediaContainer::getWidth()
{

}

int MediaContainer::getFrameRate()
{

}

void MediaContainer::getStream(/* stream */)
{

}