static int filter_get_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
{
// Get the filter
mlt_filter filter = mlt_frame_pop_service( frame );
// Get the properties
mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
// Get the image
int error = 0;
*format = mlt_image_rgb24a;
// Only process if we have no error and a valid colour space
if ( error == 0 )
{
mlt_service_lock( MLT_FILTER_SERVICE( filter ) );
mlt_producer producer = mlt_properties_get_data( properties, "producer", NULL );
mlt_transition transition = mlt_properties_get_data( properties, "transition", NULL );
mlt_frame a_frame = NULL;
mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE( filter ) );
if ( producer == NULL )
{
char *background = mlt_properties_get( properties, "background" );
producer = mlt_factory_producer( profile, NULL, background );
mlt_properties_set_data( properties, "producer", producer, 0, (mlt_destructor)mlt_producer_close, NULL );
}
if ( transition == NULL )
{
transition = mlt_factory_transition( profile, "qtblend", NULL );
mlt_properties_set_data( properties, "transition", transition, 0, (mlt_destructor)mlt_transition_close, NULL );
if ( transition )
mlt_properties_set_int( MLT_TRANSITION_PROPERTIES( transition ), "b_alpha", 1 );
}
if ( producer != NULL && transition != NULL )
{
mlt_position position = mlt_filter_get_position( filter, frame );
mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
mlt_position in = mlt_filter_get_in( filter );
mlt_position out = mlt_filter_get_out( filter );
double consumer_ar = mlt_profile_sar( profile );
mlt_transition_set_in_and_out( transition, in, out );
if ( out > 0 ) {
mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( producer ), "length", out - in + 1 );
mlt_producer_set_in_and_out( producer, in, out );
}
mlt_producer_seek( producer, in + position );
mlt_frame_set_position( frame, position );
mlt_properties_pass( MLT_PRODUCER_PROPERTIES( producer ), properties, "producer." );
mlt_properties_pass( MLT_TRANSITION_PROPERTIES( transition ), properties, "transition." );
mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer ), &a_frame, 0 );
mlt_frame_set_position( a_frame, in + position );
// Set the rescale interpolation to match the frame
mlt_properties_set( MLT_FRAME_PROPERTIES( a_frame ), "rescale.interp", mlt_properties_get( frame_properties, "rescale.interp" ) );
// Special case - aspect_ratio = 0
if ( mlt_frame_get_aspect_ratio( frame ) == 0 )
mlt_frame_set_aspect_ratio( frame, consumer_ar );
if ( mlt_frame_get_aspect_ratio( a_frame ) == 0 )
mlt_frame_set_aspect_ratio( a_frame, consumer_ar );
// Add the qtblend transition onto the frame stack
mlt_service_unlock( MLT_FILTER_SERVICE( filter ) );
mlt_transition_process( transition, a_frame, frame );
if ( mlt_properties_get_int( properties, "use_normalised" ) )
{
// Use the normalised width & height
mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE( filter ) );
*width = profile->width;
*height = profile->height;
}
mlt_frame_get_image( a_frame, image, format, width, height, writable );
mlt_properties_set_data( frame_properties, "affine_frame", a_frame, 0, (mlt_destructor)mlt_frame_close, NULL );
mlt_frame_set_image( frame, *image, *width * *height * 4, NULL );
//mlt_frame_set_alpha( frame, mlt_frame_get_alpha_mask( a_frame ), *width * *height, NULL );
}
else
{
mlt_service_unlock( MLT_FILTER_SERVICE( filter ) );
}
}
return error;
}
int main( int argc, char **argv )
{
char temp[ 132 ];
char *file1 = NULL;
char *file2 = NULL;
char *wipe = NULL;
mlt_factory_init( "../modules" );
if ( argc < 4 )
{
fprintf( stderr, "usage: luma file1.mpeg file2.mpeg wipe.pgm\n" );
return 1;
}
else
{
file1 = argv[ 1 ];
file2 = argv[ 2 ];
wipe = argv[ 3 ];
}
// Start the consumer...
mlt_consumer consumer = mlt_factory_consumer( "bluefish", "NTSC" );
// Create the producer(s)
mlt_producer dv1 = mlt_factory_producer( "mcmpeg", file1 );
mlt_producer dv2 = mlt_factory_producer( "mcmpeg", file2 );
mlt_playlist playlist1 = mlt_playlist_init();
mlt_playlist_append_io( playlist1, dv1, 0.0, 5.0 );
mlt_playlist playlist2 = mlt_playlist_init();
mlt_playlist_blank( playlist2, 2.9 );
mlt_playlist_append( playlist2, dv2 );
// Register producers(s) with a multitrack object
mlt_multitrack multitrack = mlt_multitrack_init( );
mlt_multitrack_connect( multitrack, mlt_playlist_producer( playlist1 ), 0 );
mlt_multitrack_connect( multitrack, mlt_playlist_producer( playlist2 ), 1 );
// Define a transition
mlt_transition transition = mlt_factory_transition( "luma", wipe );
mlt_properties_set( mlt_transition_properties( transition ), "filename", wipe );
mlt_properties_set_double( mlt_transition_properties( transition ), "softness", 0.1 );
mlt_transition_connect( transition, mlt_multitrack_service( multitrack ), 0, 1 );
mlt_transition_set_in_and_out( transition, 3.0, 5.0 );
// Buy a tractor and connect it to the filter
mlt_tractor tractor = mlt_tractor_init( );
mlt_tractor_connect( tractor, mlt_transition_service( transition ) );
// Connect the tractor to the consumer
mlt_consumer_connect( consumer, mlt_tractor_service( tractor ) );
// Do stuff until we're told otherwise...
fprintf( stderr, "Press return to continue\n" );
fgets( temp, 132, stdin );
// Close everything...
mlt_consumer_close( consumer );
mlt_tractor_close( tractor );
mlt_transition_close( transition );
mlt_multitrack_close( multitrack );
mlt_playlist_close( playlist1 );
mlt_playlist_close( playlist2 );
mlt_producer_close( dv1 );
mlt_producer_close( dv2 );
return 0;
}
int main( int argc, char **argv )
{
char temp[ 132 ];
char *file1 = NULL;
char *text = NULL;
mlt_factory_init( "../modules" );
if ( argc < 3 )
{
fprintf( stderr, "usage: pango file.mpeg text_to_display\n" );
return 1;
}
else
{
file1 = argv[ 1 ];
text = argv[ 2 ];
}
// Start the consumer...
mlt_consumer consumer = mlt_factory_consumer( "bluefish", "NTSC" );
// Create the producer(s)
mlt_playlist pl1 = mlt_playlist_init();
mlt_producer dv1 = mlt_factory_producer( "mcmpeg", file1 );
mlt_playlist_append( pl1, dv1 );
mlt_playlist pl2 = mlt_playlist_init();
mlt_producer title = mlt_factory_producer( "pango", NULL ); //"<span font_desc=\"Sans Bold 36\">Mutton <span font_desc=\"Luxi Serif Bold Oblique 36\">Lettuce</span> Tomato</span>" );
mlt_playlist_append( pl2, title );
mlt_properties_set( mlt_producer_properties( title ), "family", "Sans" );
mlt_properties_set( mlt_producer_properties( title ), "size", "36" );
mlt_properties_set( mlt_producer_properties( title ), "weight", "700" );
mlt_properties_set( mlt_producer_properties( title ), "text", text );
mlt_properties_set_int( mlt_producer_properties( title ), "bgcolor", 0x0000007f );
mlt_properties_set_int( mlt_producer_properties( title ), "pad", 8 );
mlt_properties_set_int( mlt_producer_properties( title ), "align", 1 );
mlt_properties_set_int( mlt_producer_properties( title ), "x", 200 );
mlt_properties_set_int( mlt_producer_properties( title ), "y", 40 );
mlt_properties_set_double( mlt_producer_properties( title ), "mix", 0.8 );
// Register producers(s) with a multitrack object
mlt_multitrack multitrack = mlt_multitrack_init( );
mlt_multitrack_connect( multitrack, mlt_playlist_producer( pl1 ), 0 );
mlt_multitrack_connect( multitrack, mlt_playlist_producer( pl2 ), 1 );
// Define a transition
mlt_transition transition = mlt_factory_transition( "composite", NULL );
mlt_transition_connect( transition, mlt_multitrack_service( multitrack ), 0, 1 );
mlt_transition_set_in_and_out( transition, 0.0, 9999.0 );
// Buy a tractor and connect it to the filter
mlt_tractor tractor = mlt_tractor_init( );
mlt_tractor_connect( tractor, mlt_transition_service( transition ) );
// Connect the tractor to the consumer
mlt_consumer_connect( consumer, mlt_tractor_service( tractor ) );
// Do stuff until we're told otherwise...
fprintf( stderr, "Press return to continue\n" );
fgets( temp, 132, stdin );
// Close everything...
mlt_consumer_close( consumer );
mlt_tractor_close( tractor );
mlt_transition_close( transition );
mlt_multitrack_close( multitrack );
mlt_playlist_close( pl1 );
mlt_playlist_close( pl2 );
mlt_producer_close( dv1 );
mlt_producer_close( title );
return 0;
}
