#include "config.h"
#include "mlt_producer.h"
+#include "mlt_factory.h"
#include "mlt_frame.h"
#include <stdio.h>
#include <string.h>
int mlt_producer_init( mlt_producer this, void *child )
{
- // Initialise the producer
- memset( this, 0, sizeof( struct mlt_producer_s ) );
-
- // Associate with the child
- this->child = child;
+ // Check that we haven't received NULL
+ int error = this == NULL;
- // Initialise the service
- if ( mlt_service_init( &this->parent, this ) == 0 )
+ // Continue if no error
+ if ( error == 0 )
{
- // The parent is the service
- mlt_service parent = &this->parent;
-
- // Get the properties of the parent
- mlt_properties properties = mlt_service_properties( parent );
-
- // Set the default properties
- mlt_properties_set( properties, "mlt_type", "mlt_producer" );
- mlt_properties_set_position( properties, "position", 0.0 );
- mlt_properties_set_double( properties, "frame", 0 );
- mlt_properties_set_double( properties, "fps", 25.0 );
- mlt_properties_set_double( properties, "speed", 1.0 );
- mlt_properties_set_position( properties, "in", 0 );
- mlt_properties_set_position( properties, "out", 1799999 );
- mlt_properties_set_position( properties, "length", 1800000 );
- mlt_properties_set_double( properties, "aspect_ratio", 4.0 / 3.0 );
- mlt_properties_set( properties, "eof", "pause" );
- mlt_properties_set( properties, "resource", "<producer>" );
-
- // Override service get_frame
- parent->get_frame = producer_get_frame;
+ // Initialise the producer
+ memset( this, 0, sizeof( struct mlt_producer_s ) );
+
+ // Associate with the child
+ this->child = child;
+
+ // Initialise the service
+ if ( mlt_service_init( &this->parent, this ) == 0 )
+ {
+ // Get the normalisation preference
+ char *normalisation = mlt_environment( "MLT_NORMALISATION" );
+
+ // The parent is the service
+ mlt_service parent = &this->parent;
+
+ // Define the parent close
+ parent->close = ( mlt_destructor )mlt_producer_close;
+ parent->close_object = this;
+
+ // For convenience, we'll assume the close_object is this
+ this->close_object = this;
+
+ // Get the properties of the parent
+ mlt_properties properties = mlt_service_properties( parent );
+
+ // Set the default properties
+ mlt_properties_set( properties, "mlt_type", "mlt_producer" );
+ mlt_properties_set_position( properties, "_position", 0.0 );
+ mlt_properties_set_double( properties, "_frame", 0 );
+ if ( normalisation == NULL || strcmp( normalisation, "NTSC" ) )
+ {
+ mlt_properties_set_double( properties, "fps", 25.0 );
+ mlt_properties_set_double( properties, "aspect_ratio", 72.0 / 79.0 );
+ }
+ else
+ {
+ mlt_properties_set_double( properties, "fps", 30000.0 / 1001.0 );
+ mlt_properties_set_double( properties, "aspect_ratio", 128.0 / 117.0 );
+ }
+ mlt_properties_set_double( properties, "_speed", 1.0 );
+ mlt_properties_set_position( properties, "in", 0 );
+ mlt_properties_set_position( properties, "out", 14999 );
+ mlt_properties_set_position( properties, "length", 15000 );
+ mlt_properties_set( properties, "eof", "pause" );
+ mlt_properties_set( properties, "resource", "<producer>" );
+
+ // Override service get_frame
+ parent->get_frame = producer_get_frame;
+ }
}
- return 0;
+ return error;
+}
+
+/** Create a new producer.
+*/
+
+mlt_producer mlt_producer_new( )
+{
+ mlt_producer this = malloc( sizeof( struct mlt_producer_s ) );
+ mlt_producer_init( this, NULL );
+ return this;
}
/** Get the parent service object.
mlt_service mlt_producer_service( mlt_producer this )
{
- return &this->parent;
+ return this != NULL ? &this->parent : NULL;
}
/** Get the producer properties.
{
// Determine eof handling
char *eof = mlt_properties_get( mlt_producer_properties( this ), "eof" );
+ int use_points = 1 - mlt_properties_get_int( mlt_producer_properties( this ), "ignore_points" );
// Check bounds
if ( position < 0 )
+ {
position = 0;
- else if ( !strcmp( eof, "pause" ) && position >= mlt_producer_get_playtime( this ) )
+ }
+ else if ( use_points && !strcmp( eof, "pause" ) && position >= mlt_producer_get_playtime( this ) )
+ {
+ mlt_producer_set_speed( this, 0 );
position = mlt_producer_get_playtime( this ) - 1;
+ }
+ else if ( use_points && !strcmp( eof, "loop" ) && position >= mlt_producer_get_playtime( this ) )
+ {
+ position = position % mlt_producer_get_playtime( this );
+ }
// Set the position
- mlt_properties_set_position( mlt_producer_properties( this ), "position", position );
+ mlt_properties_set_position( mlt_producer_properties( this ), "_position", position );
// Calculate the absolute frame
- mlt_properties_set_position( mlt_producer_properties( this ), "frame", mlt_producer_get_in( this ) + position );
+ mlt_properties_set_position( mlt_producer_properties( this ), "_frame", use_points * mlt_producer_get_in( this ) + position );
return 0;
}
mlt_position mlt_producer_position( mlt_producer this )
{
- return mlt_properties_get_position( mlt_producer_properties( this ), "position" );
+ return mlt_properties_get_position( mlt_producer_properties( this ), "_position" );
}
/** Get the current position (relative to start of producer).
mlt_position mlt_producer_frame( mlt_producer this )
{
- return mlt_properties_get_position( mlt_producer_properties( this ), "frame" );
+ return mlt_properties_get_position( mlt_producer_properties( this ), "_frame" );
}
/** Set the playing speed.
int mlt_producer_set_speed( mlt_producer this, double speed )
{
- return mlt_properties_set_double( mlt_producer_properties( this ), "speed", speed );
+ return mlt_properties_set_double( mlt_producer_properties( this ), "_speed", speed );
}
/** Get the playing speed.
double mlt_producer_get_speed( mlt_producer this )
{
- return mlt_properties_get_double( mlt_producer_properties( this ), "speed" );
+ return mlt_properties_get_double( mlt_producer_properties( this ), "_speed" );
}
/** Get the frames per second.
// Set the position
result = mlt_frame_set_position( *frame, mlt_producer_position( this ) );
+ // Mark as a test card
+ mlt_properties_set_int( mlt_frame_properties( *frame ), "test_image", 1 );
+ mlt_properties_set_int( mlt_frame_properties( *frame ), "test_audio", 1 );
+
// Calculate the next position
mlt_producer_prepare_next( this );
}
else
{
+ mlt_properties properties = mlt_producer_properties( this );
+ mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL );
+ int count = mlt_properties_get_int( properties, "_filter_count" );
+ int i;
+
// Get the frame from the implementation
result = this->get_frame( this, frame, index );
+
+ // Process the frame with the attached filters
+ for ( i = 0; i < count; i ++ )
+ if ( filters[ i ] != NULL )
+ mlt_filter_process( filters[ i ], *frame );
}
// Copy the fps and speed of the producer onto the frame
mlt_properties properties = mlt_frame_properties( *frame );
mlt_properties_set_double( properties, "fps", mlt_producer_get_fps( this ) );
double speed = mlt_producer_get_speed( this );
- mlt_properties_set_double( properties, "speed", speed );
+ mlt_properties_set_double( properties, "_speed", speed );
+ mlt_properties_set_int( properties, "test_audio", mlt_frame_is_test_audio( *frame ) );
+ mlt_properties_set_int( properties, "test_image", mlt_frame_is_test_card( *frame ) );
return 0;
}
+/** Attach a filter.
+*/
+
+int mlt_producer_attach( mlt_producer this, mlt_filter filter )
+{
+ int error = this == NULL || filter == NULL;
+ if ( error == 0 )
+ {
+ int i = 0;
+ int size = 0;
+ mlt_properties properties = mlt_producer_properties( this );
+ mlt_filter *filters = mlt_properties_get_data( properties, "_filters", &size );
+ int count = mlt_properties_get_int( properties, "_filter_count" );
+
+ for ( i = 0; error == 0 && i < count; i ++ )
+ if ( filters[ i ] == filter )
+ error = 1;
+
+ if ( error == 0 )
+ {
+ if ( count == size )
+ {
+ size += 10;
+ filters = realloc( filters, size * sizeof( mlt_filter ) );
+ mlt_properties_set_data( properties, "_filters", filters, size, NULL, NULL );
+ }
+
+ if ( filters != NULL )
+ {
+ mlt_properties_inc_ref( mlt_filter_properties( filter ) );
+ filters[ count ++ ] = filter;
+ mlt_properties_set_int( properties, "_filter_count", count );
+ }
+ else
+ {
+ error = 2;
+ }
+ }
+ }
+ return error;
+}
+
+/** Detach a filter.
+*/
+
+int mlt_producer_detach( mlt_producer this, mlt_filter filter )
+{
+ int error = this == NULL || filter == NULL;
+ if ( error == 0 )
+ {
+ int i = 0;
+ int size = 0;
+ mlt_properties properties = mlt_producer_properties( this );
+ mlt_filter *filters = mlt_properties_get_data( properties, "_filters", &size );
+ int count = mlt_properties_get_int( properties, "_filter_count" );
+
+ for ( i = 0; i < count; i ++ )
+ if ( filters[ i ] == filter )
+ break;
+
+ if ( i < count )
+ {
+ mlt_filter filter = filters[ i ];
+ filters[ i ] = NULL;
+ for ( i ++ ; i < count; i ++ )
+ filters[ i - 1 ] = filters[ i ];
+ mlt_properties_set_int( properties, "_filter_count", -- count );
+ mlt_filter_close( filter );
+ }
+ }
+ return error;
+}
+
+/** Retrieve a filter.
+*/
+
+mlt_filter mlt_producer_filter( mlt_producer this, int index )
+{
+ mlt_filter filter = NULL;
+ if ( this != NULL )
+ {
+ mlt_properties properties = mlt_producer_properties( this );
+ mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL );
+ int count = mlt_properties_get_int( properties, "_filter_count" );
+ if ( index >= 0 && index < count )
+ filter = filters[ index ];
+ }
+ return filter;
+}
+
/** Close the producer.
*/
void mlt_producer_close( mlt_producer this )
{
- if ( this->close != NULL )
- this->close( this );
- else
- mlt_service_close( &this->parent );
+ if ( this != NULL && mlt_properties_dec_ref( mlt_producer_properties( this ) ) <= 0 )
+ {
+ mlt_properties properties = mlt_producer_properties( this );
+ mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL );
+ int count = mlt_properties_get_int( properties, "_filter_count" );
+
+ while( count -- )
+ mlt_producer_detach( this, filters[ 0 ] );
+
+ this->parent.close = NULL;
+
+ if ( this->close != NULL )
+ this->close( this->close_object );
+ else
+ mlt_service_close( &this->parent );
+ }
}
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