Data feed and show filters

[melted] / src / modules / core / producer_noise.c

diff --git a/src/modules/core/producer_noise.c b/src/modules/core/producer_noise.c
index 9afe385..54d0474 100644 (file)
--- a/src/modules/core/producer_noise.c
+++ b/src/modules/core/producer_noise.c
@@ -42,6 +42,7 @@ static unsigned inline int fast_rand( )
 
 // Foward declarations
 static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index );
+static void producer_close( mlt_producer this );
 
 /** Initialise.
 */
@@ -54,8 +55,12 @@ mlt_producer producer_noise_init( void *arg )
        // Initialise the producer
        if ( this != NULL )
        {
+               // Synthetic - aspect ratio of 1
+               mlt_properties_set_double( mlt_producer_properties( this ), "aspect_ratio", 1 );
+
                // Callback registration
                this->get_frame = producer_get_frame;
+               this->close = ( mlt_destructor )producer_close;
        }
 
        return this;
@@ -124,7 +129,7 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form
        {
                int16_t *p = *buffer + size / 2;
                while ( p != *buffer ) 
-                       *( -- p ) = fast_rand( ) & 0xff;
+                       *( -- p ) = fast_rand( ) & 0x0f00;
        }
 
        // Set the buffer for destruction
@@ -144,8 +149,14 @@ static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index
                // Obtain properties of frame
                mlt_properties properties = mlt_frame_properties( *frame );
 
+               // Obtain properties of producer
+               mlt_properties producer_props = mlt_producer_properties( this );
+
+               // Determine if we're producing PAL or NTSC
+               int is_pal = mlt_properties_get_double( producer_props, "fps" ) == 25.0;
+
                // Aspect ratio is 1?
-               mlt_properties_set_double( properties, "aspect_ratio", 1.0 );
+               mlt_properties_set_double( properties, "aspect_ratio", is_pal ? 128.0/117.0 : 72.0/79.0 );
 
                // Set producer-specific frame properties
                mlt_properties_set_int( properties, "progressive", 1 );
@@ -166,4 +177,10 @@ static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index
        return 0;
 }
 
+static void producer_close( mlt_producer this )
+{
+       this->close = NULL;
+       mlt_producer_close( this );
+       free( this );
+}