void sound_free( void ) {
int i;
for( i = 0 ; i < NUM_SOUNDS ; i++ ) {
if( sounds[i] ) {
Mix_FreeChunk( sounds[i] );
sounds[i] = NULL;
}
}
sound_close_mixer();
}
int video_open( const char *filename ) {
int i = -1;
format_context = NULL;
video_codec_context = NULL;
video_stream = -1;
video_clock = 0;
audio_codec_context = NULL;
audio_stream = -1;
audio_buffer_size = 0;
audio_buffer_index = 0;
audio_packet_size = 0;
audio_packet_data = NULL;
if( !filename )
return -1;
if( av_open_input_file( &format_context, filename, NULL, 0, NULL ) != 0 ) {
fprintf( stderr, "Warning: Error opening video file '%s'\n", filename );
return -1;
}
if( av_find_stream_info( format_context ) < 0 ) {
fprintf( stderr, "Warning: Error reading stream info from '%s'\n", filename );
return -1;
}
for( i = 0 ; i < format_context->nb_streams ; i++ ) {
if( format_context->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO ) {
video_stream = i;
video_codec_context = format_context->streams[video_stream]->codec;
}
else if( format_context->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO ) {
audio_stream = i;
audio_codec_context = format_context->streams[audio_stream]->codec;
}
}
if( !video_codec_context ) {
fprintf( stderr, "Warning: Couldn't find video stream in '%s'\n", filename );
return -1;
}
video_codec_context->release_buffer = video_release_buffer;
video_codec = avcodec_find_decoder( video_codec_context->codec_id );
if( !video_codec ) {
fprintf( stderr, "Warning: Video codec in video '%s' not supported\n", filename );
return -1;
}
if( avcodec_open( video_codec_context, video_codec ) != 0 ) {
fprintf( stderr, "Warning: Couldn't open video codec '%s' for '%s'\n", video_codec->name, filename );
return -1;
}
else {
int bytes = avpicture_get_size( CONV_FORMAT, VIDEO_SIZE, VIDEO_SIZE );
video_buffer = (uint8_t*)av_malloc( bytes *sizeof(uint8_t) );
}
if( !video_buffer ) {
fprintf( stderr, "Warning: Couldn't allocate buffer for video '%s'\n", filename );
return -1;
}
avpicture_fill( (AVPicture*)conv_frame, video_buffer, CONV_FORMAT, VIDEO_SIZE, VIDEO_SIZE );
if( audio_codec_context ) {
audio_codec = avcodec_find_decoder( audio_codec_context->codec_id );
if( !audio_codec ) {
fprintf( stderr, "Warning: Audio codec in video '%s' not supported\n", filename );
audio_codec_context = NULL;
}
else {
if( avcodec_open( audio_codec_context, audio_codec ) != 0 ) {
fprintf( stderr, "Warning: Couldn't open audio codec '%s' for '%s'\n", audio_codec->name, filename );
audio_codec_context = NULL;
}
else {
SDL_AudioSpec desired;
desired.freq = audio_codec_context->sample_rate;
desired.format = AUDIO_S16SYS;
desired.channels = audio_codec_context->channels;
desired.silence = 0;
desired.samples = SAMPLES;
desired.callback = video_audio_callback;
desired.userdata = audio_codec_context;
sound_close_mixer();
if( SDL_OpenAudio( &desired, &audio_spec ) < 0 ) {
fprintf( stderr, "Warning: Couldn't open audio for video: %s\n", SDL_GetError() );
audio_codec_context = NULL;
}
else {
packet_queue_flush( &audio_queue );
audio_open = 1;
audio_running = 1;
SDL_PauseAudio( 0 );
}
}
}
}
texture = ogl_create_empty_texture();
if( !texture )
return -1;
texture->width = video_codec_context->width;
texture->height = video_codec_context->height;
got_texture = 0;
stop = 0;
reader_thread = SDL_CreateThread( video_reader_thread, NULL );
if( !reader_thread ) {
fprintf( stderr, "Warning: Couldn't start video reader thread\n" );
return -1;
}
return 0;
}
