/* 
 * Copyright (C) 2000-2001 the xine project
 * 
 * This file is part of xine, a unix video player.
 * 
 * xine 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 of the License, or
 * (at your option) any later version.
 * 
 * xine 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 *
 * $Id: video_decoder.c,v 1.25 2001/06/17 19:14:26 guenter Exp $
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "xine_internal.h"

void *video_decoder_loop (void *this_gen) {

  buf_element_t   *buf;
  xine_t          *this = (xine_t *) this_gen;
  int              running = 1;
  int              streamtype;
  video_decoder_t *decoder;

  while (running) {

    /* printf ("video_decoder: getting buffer...\n"); */

    buf = this->video_fifo->get (this->video_fifo);
    if (buf->input_pos)
      this->cur_input_pos = buf->input_pos;

    /* printf ("video_decoder: got buffer %d\n", buf->type); */

    /* 
     * Call update status callback function if
     * there is a video decoder initialized, like
     *  in mpeg1/2 playback.
     */
    /*
      if(this->cur_video_decoder_plugin != NULL) {
      if(this->status == XINE_PLAY)
      this->status_callback (this->status);
      }
    */
    
    switch (buf->type) {
    case BUF_CONTROL_START:

      if (this->cur_video_decoder_plugin) {
	this->cur_video_decoder_plugin->close (this->cur_video_decoder_plugin);
	this->cur_video_decoder_plugin = NULL;
      }

      pthread_mutex_lock (&this->xine_lock);
      this->video_finished = 0;
      pthread_mutex_unlock (&this->xine_lock);

      break;

    case BUF_VIDEO_MPEG:
    case BUF_VIDEO_AVI:

      /*
      printf ("video_decoder: got package %d, decoder_info[0]:%d\n", 
	      buf, buf->decoder_info[0]);
	      */

      streamtype = (buf->type>>16) & 0xFF;

      decoder = this->video_decoder_plugins [streamtype];

      if (decoder) {

	if (this->cur_video_decoder_plugin != decoder) {

	  if (this->cur_video_decoder_plugin) 
	    this->cur_video_decoder_plugin->close (this->cur_video_decoder_plugin);

	  this->cur_video_decoder_plugin = decoder;
	  this->cur_video_decoder_plugin->init (this->cur_video_decoder_plugin, this->video_out);

	}
	
	decoder->decode_data (this->cur_video_decoder_plugin, buf); 
      }

      break;

    case BUF_CONTROL_END:

      if (this->cur_video_decoder_plugin) {
	this->cur_video_decoder_plugin->close (this->cur_video_decoder_plugin);
	this->cur_video_decoder_plugin = NULL;
      }

      pthread_mutex_lock (&this->xine_lock);
      
      if (!this->video_finished && (buf->decoder_info[0]==0)) {

	this->video_finished = 1;
	
	if (this->audio_finished) {
	  pthread_mutex_unlock (&this->xine_lock);
	  xine_notify_stream_finished (this);
	} else
	  pthread_mutex_unlock (&this->xine_lock);
      } else
	pthread_mutex_unlock (&this->xine_lock);

      break;

    case BUF_CONTROL_QUIT:
      if (this->cur_video_decoder_plugin) {
	this->cur_video_decoder_plugin->close (this->cur_video_decoder_plugin);
	this->cur_video_decoder_plugin = NULL;
      }
      running = 0;
      break;

    }

    buf->free_buffer (buf);
  }

  pthread_exit(NULL);
}

void video_decoder_init (xine_t *this) {

  this->video_fifo = fifo_buffer_new (1500, 4096);

  pthread_create (&this->video_thread, NULL, video_decoder_loop, this) ;
}

void video_decoder_shutdown (xine_t *this) {

  buf_element_t *buf;
  void          *p;

  this->video_fifo->clear(this->video_fifo);

  buf = this->video_fifo->buffer_pool_alloc (this->video_fifo);
  buf->type = BUF_CONTROL_QUIT;
  this->video_fifo->put (this->video_fifo, buf);

  pthread_join (this->video_thread, &p);

  this->video_out->exit (this->video_out);
}