#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include <sys/time.h>
/** Public final methods
*/
mlt_properties properties = mlt_service_properties( &this->parent );
// Get the normalisation preference
- char *normalisation = getenv( "MLT_NORMALISATION" );
+ char *normalisation = mlt_environment( "MLT_NORMALISATION" );
// Deal with normalisation
if ( normalisation == NULL || strcmp( normalisation, "NTSC" ) )
mlt_properties_set_int( properties, "width", 720 );
mlt_properties_set_int( properties, "height", 576 );
mlt_properties_set_int( properties, "progressive", 0 );
+ mlt_properties_set_double( properties, "aspect_ratio", 128.0 / 117.0 );
}
else
{
mlt_properties_set_int( properties, "width", 720 );
mlt_properties_set_int( properties, "height", 480 );
mlt_properties_set_int( properties, "progressive", 0 );
+ mlt_properties_set_double( properties, "aspect_ratio", 72.0 / 79.0 );
}
- mlt_properties_set_double( properties, "aspect_ratio", 4.0 / 3.0 );
// Default rescaler for all consumers
mlt_properties_set( properties, "rescale", "bilinear" );
+
+ // Default read ahead buffer size
+ mlt_properties_set_int( properties, "buffer", 25 );
+
+ // Default audio frequency and channels
+ mlt_properties_set_int( properties, "frequency", 48000 );
+ mlt_properties_set_int( properties, "channels", 2 );
+
+ // Default of all consumers is real time
+ mlt_properties_set_int( properties, "real_time", 1 );
+
+ // Hmm - default all consumers to yuv422 :-/
+ this->format = mlt_image_yuv422;
}
return error;
}
+/** Create a new consumer.
+*/
+
+mlt_consumer mlt_consumer_new( )
+{
+ // Create the memory for the structure
+ mlt_consumer this = malloc( sizeof( struct mlt_consumer_s ) );
+
+ // Initialise it
+ if ( this != NULL )
+ mlt_consumer_init( this, NULL );
+
+ // Return it
+ return this;
+}
+
/** Get the parent service object.
*/
system( mlt_properties_get( properties, "ante" ) );
}
}
+ else
+ {
+ // Allow the hash table to speed things up
+ mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL );
+ }
// Start the service
if ( this->start != NULL )
// Get the frame properties
mlt_properties frame_properties = mlt_frame_properties( frame );
- // Attach the test frame producer to it.
+ // Get the test card producer
mlt_producer test_card = mlt_properties_get_data( properties, "test_card_producer", NULL );
- mlt_properties_set_data( frame_properties, "test_card_producer", test_card, 0, NULL, NULL );
+
+ // Attach the test frame producer to it.
+ if ( test_card != NULL )
+ mlt_properties_set_data( frame_properties, "test_card_producer", test_card, 0, NULL, NULL );
// Attach the rescale property
- if ( mlt_properties_get( properties, "rescale" ) != NULL )
- mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale" ) );
+ mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale" ) );
- // TODO: Aspect ratio and other jiggery pokery
+ // Aspect ratio and other jiggery pokery
mlt_properties_set_double( frame_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "aspect_ratio" ) );
mlt_properties_set_int( frame_properties, "consumer_progressive", mlt_properties_get_int( properties, "progressive" ) );
-
+ mlt_properties_set_int( frame_properties, "consumer_deinterlace", mlt_properties_get_int( properties, "deinterlace" ) );
}
// Return the frame
return frame;
}
+static inline long time_difference( struct timeval *time1 )
+{
+ struct timeval time2;
+ time2.tv_sec = time1->tv_sec;
+ time2.tv_usec = time1->tv_usec;
+ gettimeofday( time1, NULL );
+ return time1->tv_sec * 1000000 + time1->tv_usec - time2.tv_sec * 1000000 - time2.tv_usec;
+}
+
+static void *consumer_read_ahead_thread( void *arg )
+{
+ // The argument is the consumer
+ mlt_consumer this = arg;
+
+ // Get the properties of the consumer
+ mlt_properties properties = mlt_consumer_properties( this );
+
+ // Get the width and height
+ int width = mlt_properties_get_int( properties, "width" );
+ int height = mlt_properties_get_int( properties, "height" );
+
+ // Get the maximum size of the buffer
+ int buffer = mlt_properties_get_int( properties, "buffer" );
+
+ // General frame variable
+ mlt_frame frame = NULL;
+ uint8_t *image = NULL;
+
+ // Time structures
+ struct timeval ante;
+
+ // Average time for get_frame and get_image
+ int count = 1;
+ int skipped = 0;
+ int64_t time_wait = 0;
+ int64_t time_frame = 0;
+ int64_t time_image = 0;
+
+ // Get the first frame
+ frame = mlt_consumer_get_frame( this );
+
+ // Get the image of the first frame
+ mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 );
+ mlt_properties_set_int( mlt_frame_properties( frame ), "rendered", 1 );
+
+ // Get the starting time (can ignore the times above)
+ gettimeofday( &ante, NULL );
+
+ // Continue to read ahead
+ while ( this->ahead )
+ {
+ // Put the current frame into the queue
+ 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 );
+
+ // Get the next frame
+ frame = mlt_consumer_get_frame( this );
+ time_frame += time_difference( &ante );
+
+ // Increment the count
+ count ++;
+
+ // Get the image
+ if ( ( time_frame + time_image ) / count < ( 40000 - ( time_wait / count ) ) )
+ {
+ // Get the image, mark as rendered and time it
+ 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 );
+
+ // Reset the skipped count
+ skipped = 0;
+ }
+ else
+ {
+ // Increment the number of sequentially skipped frames
+ skipped ++;
+
+ // If we've reached an unacceptable level, reset everything
+ if ( skipped > 10 )
+ {
+ skipped = 0;
+ time_frame = 0;
+ time_image = 0;
+ time_wait = 0;
+ count = 0;
+ }
+ }
+ }
+
+ // Remove the last frame
+ mlt_frame_close( frame );
+
+ return NULL;
+}
+
+static void consumer_read_ahead_start( mlt_consumer this )
+{
+ // We're running now
+ this->ahead = 1;
+
+ // Create the frame queue
+ this->queue = mlt_deque_init( );
+
+ // Create the mutex
+ pthread_mutex_init( &this->mutex, NULL );
+
+ // Create the condition
+ pthread_cond_init( &this->cond, NULL );
+
+ // Create the read ahead
+ pthread_create( &this->ahead_thread, NULL, consumer_read_ahead_thread, this );
+
+}
+
+static void consumer_read_ahead_stop( mlt_consumer this )
+{
+ // Make sure we're running
+ if ( this->ahead )
+ {
+ // Inform thread to stop
+ this->ahead = 0;
+
+ // Broadcast to the condition in case it's waiting
+ pthread_mutex_lock( &this->mutex );
+ pthread_cond_broadcast( &this->cond );
+ pthread_mutex_unlock( &this->mutex );
+
+ // Join the thread
+ pthread_join( this->ahead_thread, NULL );
+
+ // Destroy the mutex
+ pthread_mutex_destroy( &this->mutex );
+
+ // Destroy the condition
+ pthread_cond_destroy( &this->cond );
+
+ // Wipe the queue
+ while ( mlt_deque_count( this->queue ) )
+ mlt_frame_close( mlt_deque_pop_back( this->queue ) );
+ }
+}
+
+mlt_frame mlt_consumer_rt_frame( mlt_consumer this )
+{
+ // Frame to return
+ mlt_frame frame = NULL;
+
+ // Get the properties
+ mlt_properties properties = mlt_consumer_properties( this );
+
+ // Check if the user has requested real time or not
+ if ( mlt_properties_get_int( properties, "real_time" ) )
+ {
+ int size = 1;
+
+ // Is the read ahead running?
+ if ( this->ahead == 0 )
+ {
+ int buffer = mlt_properties_get_int( properties, "buffer" );
+ consumer_read_ahead_start( this );
+ if ( buffer > 1 )
+ size = buffer / 2;
+ }
+
+ // Get frame from queue
+ pthread_mutex_lock( &this->mutex );
+ while( this->ahead && mlt_deque_count( this->queue ) < size )
+ pthread_cond_wait( &this->cond, &this->mutex );
+ frame = mlt_deque_pop_front( this->queue );
+ pthread_cond_broadcast( &this->cond );
+ pthread_mutex_unlock( &this->mutex );
+ }
+ else
+ {
+ // Get the frame in non real time
+ frame = mlt_consumer_get_frame( this );
+
+ // This isn't true, but from the consumers perspective it is
+ mlt_properties_set_int( mlt_frame_properties( frame ), "rendered", 1 );
+ }
+
+ return frame;
+}
+
/** Stop the consumer.
*/
if ( this->stop != NULL )
this->stop( this );
+ // Check if the user has requested real time or not and stop if necessary
+ if ( mlt_properties_get_int( properties, "real_time" ) )
+ consumer_read_ahead_stop( this );
+
// Kill the test card
mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL );
else
mlt_service_close( &this->parent );
}
-
projects / mlt / blobdiff