int audio_avail;
pthread_mutex_t audio_mutex;
pthread_cond_t audio_cond;
+ pthread_mutex_t video_mutex;
+ pthread_cond_t video_cond;
int window_width;
int window_height;
float aspect_ratio;
// This is the initialisation of the consumer
pthread_mutex_init( &this->audio_mutex, NULL );
pthread_cond_init( &this->audio_cond, NULL);
+ pthread_mutex_init( &this->video_mutex, NULL );
+ pthread_cond_init( &this->video_cond, NULL);
// Default scaler (for now we'll use nearest)
mlt_properties_set( this->properties, "rescale", "nearest" );
SDL_DisplayYUVOverlay( this->sdl_overlay, &this->sdl_screen->clip_rect );
}
}
-
}
return 0;
}
+static void *video_thread( void *arg )
+{
+ // Identify the arg
+ consumer_sdl this = arg;
+
+ // Obtain time of thread start
+ struct timeval now;
+ int64_t start = 0;
+ int64_t elapsed = 0;
+ struct timespec tm;
+ mlt_frame next = NULL;
+ mlt_properties properties = NULL;
+ double speed = 0;
+ int skipped = 0;
+
+ // Get the current time
+ gettimeofday( &now, NULL );
+
+ // Determine start time
+ start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
+
+ while ( this->running )
+ {
+ // Pop the next frame
+ pthread_mutex_lock( &this->video_mutex );
+ while ( ( next = mlt_deque_pop_front( this->queue ) ) == NULL && this->running )
+ pthread_cond_wait( &this->video_cond, &this->video_mutex );
+ pthread_mutex_unlock( &this->video_mutex );
+
+ // Get the properties
+ properties = mlt_frame_properties( next );
+
+ // Get the speed of the frame
+ speed = mlt_properties_get_double( properties, "_speed" );
+
+ // Get the current time
+ gettimeofday( &now, NULL );
+
+ // Get the elapsed time
+ elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
+
+ // See if we have to delay the display of the current frame
+ if ( mlt_properties_get_int( properties, "rendered" ) == 1 && this->running )
+ {
+ // Obtain the scheduled playout time
+ mlt_position scheduled = mlt_properties_get_position( properties, "playtime" );
+
+ // Determine the difference between the elapsed time and the scheduled playout time
+ mlt_position difference = scheduled - elapsed;
+
+ // Smooth playback a bit
+ if ( difference > 20000 && speed == 1.0 )
+ {
+ tm.tv_sec = difference / 1000000;
+ tm.tv_nsec = ( difference % 1000000 ) * 500;
+ nanosleep( &tm, NULL );
+ }
+
+ // Show current frame if not too old
+ if ( difference > -10000 || speed != 1.0 || mlt_deque_count( this->queue ) < 2 )
+ consumer_play_video( this, next );
+ else
+ skipped ++;
+
+ // If the queue is empty, recalculate start to allow build up again
+ if ( mlt_deque_count( this->queue ) == 0 )
+ {
+ gettimeofday( &now, NULL );
+ start = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - scheduled + 20000;
+ }
+ }
+
+ // This frame can now be closed
+ mlt_frame_close( next );
+ }
+
+ return NULL;
+}
+
/** Threaded wrapper for pipe.
*/
// Get the consumer
mlt_consumer consumer = &this->parent;
+ // Video thread
+ pthread_t thread;
+
// internal intialization
int init_audio = 1;
-
- // Obtain time of thread start
- struct timeval now;
- int64_t start = 0;
- int64_t elapsed = 0;
- int duration = 0;
- int64_t playtime = 0;
- struct timespec tm;
- mlt_frame next = NULL;
+ int init_video = 1;
mlt_frame frame = NULL;
mlt_properties properties = NULL;
+ int duration = 0;
+ int64_t playtime = 0;
if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_NOPARACHUTE ) < 0 )
{
init_audio = consumer_play_audio( this, frame, init_audio, &duration );
// Determine the start time now
- if ( this->playing && start == 0 )
+ if ( this->playing && init_video )
{
- // Get the current time
- gettimeofday( &now, NULL );
+ // Create the video thread
+ pthread_create( &thread, NULL, video_thread, this );
- // Determine start time
- start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
+ // Video doesn't need to be initialised any more
+ init_video = 0;
}
// Set playtime for this frame
mlt_properties_set_position( properties, "playtime", playtime );
// Push this frame to the back of the queue
+ pthread_mutex_lock( &this->video_mutex );
mlt_deque_push_back( this->queue, frame );
+ pthread_cond_broadcast( &this->video_cond );
+ pthread_mutex_unlock( &this->video_mutex );
// Calculate the next playtime
playtime += ( duration * 1000 );
}
+ }
- // Pop the next frame
- next = mlt_deque_pop_front( this->queue );
-
- while ( next != NULL && this->playing )
- {
- // Get the properties
- properties = mlt_frame_properties( next );
-
- // Get the current time
- gettimeofday( &now, NULL );
-
- // Get the elapsed time
- elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
-
- // See if we have to delay the display of the current frame
- if ( mlt_properties_get_int( properties, "rendered" ) == 1 )
- {
- // Obtain the scheduled playout time
- mlt_position scheduled = mlt_properties_get_position( properties, "playtime" );
-
- // Determine the difference between the elapsed time and the scheduled playout time
- mlt_position difference = scheduled - elapsed;
-
- // If the frame is quite some way in the future, go get another
- if ( difference >= 30000 && mlt_deque_count( this->queue ) < 10 )
- break;
-
- // Smooth playback a bit
- if ( difference > 20000 && mlt_properties_get_double( properties, "_speed" ) == 1.0 )
- {
- tm.tv_sec = difference / 1000000;
- tm.tv_nsec = ( difference % 1000000 ) * 1000;
- nanosleep( &tm, NULL );
- }
-
- // Show current frame if not too old
- if ( difference > -10000 || mlt_properties_get_double( properties, "_speed" ) != 1.0 )
- consumer_play_video( this, next );
- else
- start = start - difference;
- }
-
- // This is an unrendered frame - just close it
- mlt_frame_close( next );
-
- // Pop the next frame
- next = mlt_deque_pop_front( this->queue );
- }
-
- if ( next != NULL )
- mlt_deque_push_front( this->queue, next );
+ // Kill the video thread
+ if ( init_video == 0 )
+ {
+ pthread_mutex_lock( &this->video_mutex );
+ pthread_cond_broadcast( &this->video_cond );
+ pthread_mutex_unlock( &this->video_mutex );
+ pthread_join( thread, NULL );
}
// internal cleanup
projects / mlt / commitdiff