Audio read ahead and fine tuning

[melted] / src / framework / mlt_consumer.c

diff --git a/src/framework/mlt_consumer.c b/src/framework/mlt_consumer.c
index 5f00b6c..aa95f91 100644 (file)
--- a/src/framework/mlt_consumer.c
+++ b/src/framework/mlt_consumer.c
@@ -238,8 +238,23 @@ static void *consumer_read_ahead_thread( void *arg )
        int width = mlt_properties_get_int( properties, "width" );
        int height = mlt_properties_get_int( properties, "height" );
 
+       // See if video is turned off
+       int video_off = mlt_properties_get_int( properties, "video_off" );
+
+       // Get the audio settings
+       mlt_audio_format afmt = mlt_audio_pcm;
+       int counter = 0;
+       double fps = mlt_properties_get_double( properties, "fps" );
+       int channels = mlt_properties_get_int( properties, "channels" );
+       int frequency = mlt_properties_get_int( properties, "frequency" );
+       int samples = 0;
+       int16_t *pcm = NULL;
+
+       // See if audio is turned off
+       int audio_off = mlt_properties_get_int( properties, "audio_off" );
+
        // Get the maximum size of the buffer
-       int buffer = mlt_properties_get_int( properties, "buffer" );
+       int buffer = mlt_properties_get_int( properties, "buffer" ) + 1;
 
        // General frame variable
        mlt_frame frame = NULL;
@@ -269,13 +284,14 @@ static void *consumer_read_ahead_thread( void *arg )
        while ( this->ahead )
        {
                // Put the current frame into the queue
+               time_difference( &ante );
                pthread_mutex_lock( &this->mutex );
                while( this->ahead && mlt_deque_count( this->queue ) >= buffer )
                        pthread_cond_wait( &this->cond, &this->mutex );
                mlt_deque_push_back( this->queue, frame );
                pthread_cond_broadcast( &this->cond );
                pthread_mutex_unlock( &this->mutex );
-               time_wait += time_difference( &ante );
+               time_wait = time_difference( &ante );
 
                // Get the next frame
                frame = mlt_consumer_get_frame( this );
@@ -290,15 +306,23 @@ static void *consumer_read_ahead_thread( void *arg )
                        skipped = 0;
                        time_frame = 0;
                        time_image = 0;
-                       time_wait = 0;
                        count = 1;
                }
 
+               // Always process audio
+               if ( !audio_off )
+               {
+                       samples = mlt_sample_calculator( fps, frequency, counter++ );
+                       mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
+                       frame->get_audio = NULL;
+               }
+
                // Get the image
-               if ( ( time_frame + time_image ) / count < ( 40000 - ( time_wait / count ) ) )
+               if ( ( time_frame + time_image ) / count < 40000 )
                {
                        // Get the image, mark as rendered and time it
-                       mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 );
+                       if ( !video_off )
+                               mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 );
                        mlt_properties_set_int( mlt_frame_properties( frame ), "rendered", 1 );
                        time_image += time_difference( &ante );
 
@@ -316,7 +340,6 @@ static void *consumer_read_ahead_thread( void *arg )
                                skipped = 0;
                                time_frame = 0;
                                time_image = 0;
-                               time_wait = 0;
                                count = 0;
                        }
                }
@@ -402,7 +425,7 @@ mlt_frame mlt_consumer_rt_frame( mlt_consumer this )
                        int buffer = mlt_properties_get_int( properties, "buffer" );
                        consumer_read_ahead_start( this );
                        if ( buffer > 1 )
-                               size = buffer / 2;
+                               size = buffer;
                }
        
                // Get frame from queue