#include "mlt_producer.h"
#include "mlt_factory.h"
#include "mlt_frame.h"
+#include "mlt_parser.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
*/
static int producer_get_frame( mlt_service this, mlt_frame_ptr frame, int index );
+static void mlt_producer_property_changed( mlt_service owner, mlt_producer this, char *name );
+static void mlt_producer_service_changed( mlt_service owner, mlt_producer this );
/** Constructor
*/
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 );
+ mlt_properties_set_double( properties, "aspect_ratio", 59.0 / 54.0 );
}
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, "aspect_ratio", 10.0 / 11.0 );
}
mlt_properties_set_double( properties, "_speed", 1.0 );
mlt_properties_set_position( properties, "in", 0 );
// Override service get_frame
parent->get_frame = producer_get_frame;
+
+ mlt_events_listen( properties, this, "service-changed", ( mlt_listener )mlt_producer_service_changed );
+ mlt_events_listen( properties, this, "property-changed", ( mlt_listener )mlt_producer_property_changed );
+ mlt_events_register( properties, "producer-changed", NULL );
}
}
return error;
}
+/** Listener for property changes.
+*/
+
+static void mlt_producer_property_changed( mlt_service owner, mlt_producer this, char *name )
+{
+ if ( !strcmp( name, "in" ) || !strcmp( name, "out" ) || !strcmp( name, "length" ) )
+ mlt_events_fire( mlt_producer_properties( mlt_producer_cut_parent( this ) ), "producer-changed", NULL );
+}
+
+/** Listener for service changes.
+*/
+
+static void mlt_producer_service_changed( mlt_service owner, mlt_producer this )
+{
+ mlt_events_fire( mlt_producer_properties( mlt_producer_cut_parent( this ) ), "producer-changed", NULL );
+}
+
+/** Special case destructor
+*/
+
+static void mlt_cut_destroy( void *obj )
+{
+ mlt_producer this = obj;
+ this->close = NULL;
+ this->parent.close = NULL;
+ mlt_service_close( &this->parent );
+ free( this );
+}
+
/** Create a new producer.
*/
{
mlt_producer this = malloc( sizeof( struct mlt_producer_s ) );
mlt_producer_init( this, NULL );
+ this->close = mlt_cut_destroy;
return this;
}
+/** Determine if producer is a cut.
+*/
+
+int mlt_producer_is_cut( mlt_producer this )
+{
+ return mlt_properties_get_int( mlt_producer_properties( this ), "_cut" );
+}
+
+/** Determine if producer is a mix.
+*/
+
+int mlt_producer_is_mix( mlt_producer this )
+{
+ mlt_properties properties = this != NULL ? mlt_producer_properties( this ) : NULL;
+ mlt_tractor tractor = properties != NULL ? mlt_properties_get_data( properties, "mlt_mix", NULL ) : NULL;
+ return tractor != NULL;
+}
+
+/** Obtain the parent producer.
+*/
+
+mlt_producer mlt_producer_cut_parent( mlt_producer this )
+{
+ mlt_properties properties = mlt_producer_properties( this );
+ if ( mlt_producer_is_cut( this ) )
+ return mlt_properties_get_data( properties, "_cut_parent", NULL );
+ else
+ return this;
+}
+
+/** Create a cut of this producer
+*/
+
+mlt_producer mlt_producer_cut( mlt_producer this, int in, int out )
+{
+ mlt_producer result = mlt_producer_new( );
+ mlt_producer parent = mlt_producer_cut_parent( this );
+ mlt_properties properties = mlt_producer_properties( result );
+ mlt_properties parent_props = mlt_producer_properties( parent );
+
+ // Special case - allow for a cut of the entire producer (this will squeeze all other cuts to 0)
+ if ( in <= 0 )
+ in = 0;
+ if ( out >= mlt_producer_get_playtime( parent ) )
+ out = mlt_producer_get_playtime( parent ) - 1;
+
+ mlt_properties_inc_ref( parent_props );
+ mlt_properties_set_int( properties, "_cut", 1 );
+ mlt_properties_set_data( properties, "_cut_parent", parent, 0, ( mlt_destructor )mlt_producer_close, NULL );
+ mlt_properties_set_position( properties, "length", mlt_properties_get_position( parent_props, "length" ) );
+ mlt_properties_set_position( properties, "in", 0 );
+ mlt_properties_set_position( properties, "out", 0 );
+ mlt_producer_set_in_and_out( result, in, out );
+
+ return result;
+}
+
/** Get the parent service object.
*/
int mlt_producer_seek( mlt_producer this, mlt_position position )
{
// 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" );
+ mlt_properties properties = mlt_producer_properties( this );
+ char *eof = mlt_properties_get( properties, "eof" );
+ int use_points = 1 - mlt_properties_get_int( properties, "ignore_points" );
+
+ // Recursive behaviour for cuts...
+ if ( mlt_producer_is_cut( this ) )
+ mlt_producer_seek( mlt_producer_cut_parent( this ), position + mlt_producer_get_in( this ) );
// Check bounds
if ( position < 0 )
int mlt_producer_set_in_and_out( mlt_producer this, mlt_position in, mlt_position out )
{
+ mlt_properties properties = mlt_producer_properties( this );
+
// Correct ins and outs if necessary
if ( in < 0 )
in = 0;
}
// Set the values
- mlt_properties_set_position( mlt_producer_properties( this ), "in", in );
- mlt_properties_set_position( mlt_producer_properties( this ), "out", out );
+ mlt_events_block( properties, properties );
+ mlt_properties_set_position( properties, "in", in );
+ mlt_events_unblock( properties, properties );
+ mlt_properties_set_position( properties, "out", out );
return 0;
}
+/** Physically reduce the producer (typically a cut) to a 0 length.
+ Essentially, all 0 length cuts should be immediately removed by containers.
+*/
+
+int mlt_producer_clear( mlt_producer this )
+{
+ if ( this != NULL )
+ {
+ mlt_properties properties = mlt_producer_properties( this );
+ mlt_events_block( properties, properties );
+ mlt_properties_set_position( properties, "in", 0 );
+ mlt_events_unblock( properties, properties );
+ mlt_properties_set_position( properties, "out", -1 );
+ }
+ return 0;
+}
+
/** Get the in point.
*/
int result = 1;
mlt_producer this = service->child;
- // Determine eof handling
- char *eof = mlt_properties_get( mlt_producer_properties( this ), "eof" );
-
- // A properly instatiated producer will have a get_frame method...
- if ( this->get_frame == NULL || ( !strcmp( eof, "continue" ) && mlt_producer_position( this ) > mlt_producer_get_out( this ) ) )
+ if ( !mlt_producer_is_cut( this ) )
{
- // Generate a test frame
- *frame = mlt_frame_init( );
+ // Get the properties of this producer
+ mlt_properties properties = mlt_producer_properties( this );
+
+ // Determine eof handling
+ char *eof = mlt_properties_get( mlt_producer_properties( this ), "eof" );
- // Set the position
- result = mlt_frame_set_position( *frame, mlt_producer_position( this ) );
+ // Get the speed of the producer
+ double speed = mlt_producer_get_speed( 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 );
+ // We need to use the clone if it's specified
+ mlt_producer clone = mlt_properties_get_data( properties, "use_clone", NULL );
- // Calculate the next position
- mlt_producer_prepare_next( this );
+ // If no clone is specified, use this
+ clone = clone == NULL ? this : clone;
+
+ // A properly instatiated producer will have a get_frame method...
+ if ( this->get_frame == NULL || ( !strcmp( eof, "continue" ) && mlt_producer_position( this ) > mlt_producer_get_out( this ) ) )
+ {
+ // Generate a test frame
+ *frame = mlt_frame_init( );
+
+ // 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
+ {
+ // Get the frame from the implementation
+ result = this->get_frame( clone, frame, index );
+ }
+
+ // Copy the fps and speed of the producer onto the frame
+ properties = mlt_frame_properties( *frame );
+ mlt_properties_set_double( properties, "_speed", speed );
+ mlt_properties_set_double( properties, "fps", mlt_producer_get_fps( this ) );
+ 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 ) );
+ if ( mlt_properties_get_data( properties, "_producer", NULL ) == NULL )
+ mlt_properties_set_data( properties, "_producer", service, 0, NULL, NULL );
}
else
{
- // Get the frame from the implementation
- result = this->get_frame( this, frame, index );
+ // Get the parent of this cut
+ mlt_producer parent = mlt_producer_cut_parent( this );
+
+ // Get the properties of the parent
+ mlt_properties parent_properties = mlt_producer_properties( parent );
+
+ // Get the properties of the cut
+ mlt_properties properties = mlt_producer_properties( this );
+
+ // Determine the clone index
+ int clone_index = mlt_properties_get_int( properties, "_clone" );
+
+ // Determine the clone to use
+ mlt_producer clone = this;
+
+ if ( clone_index > 0 )
+ {
+ char key[ 25 ];
+ sprintf( key, "_clone.%d", clone_index - 1 );
+ clone = mlt_properties_get_data( mlt_producer_properties( mlt_producer_cut_parent( this ) ), key, NULL );
+ if ( clone == NULL ) fprintf( stderr, "requested clone doesn't exist %d\n", clone_index );
+ clone = clone == NULL ? this : clone;
+ }
+ else
+ {
+ clone = parent;
+ }
+
+ // We need to seek to the correct position in the clone
+ mlt_producer_seek( clone, mlt_producer_get_in( this ) + mlt_properties_get_int( properties, "_position" ) );
+
+ // Assign the clone property to the parent
+ mlt_properties_set_data( parent_properties, "use_clone", clone, 0, NULL, NULL );
+
+ // Now get the frame from the parents service
+ result = mlt_service_get_frame( mlt_producer_service( parent ), frame, index );
+
+ // We're done with the clone now
+ mlt_properties_set_data( parent_properties, "use_clone", NULL, 0, NULL, NULL );
+ }
+
+ return result;
+}
+
+/** Attach a filter.
+*/
+
+int mlt_producer_attach( mlt_producer this, mlt_filter filter )
+{
+ return mlt_service_attach( mlt_producer_service( this ), filter );
+}
+
+/** Detach a filter.
+*/
+
+int mlt_producer_detach( mlt_producer this, mlt_filter filter )
+{
+ return mlt_service_detach( mlt_producer_service( this ), filter );
+}
+
+/** Retrieve a filter.
+*/
+
+mlt_filter mlt_producer_filter( mlt_producer this, int index )
+{
+ return mlt_service_filter( mlt_producer_service( this ), index );
+}
+
+/** Clone this producer.
+*/
+
+static mlt_producer mlt_producer_clone( mlt_producer this )
+{
+ mlt_producer clone = NULL;
+ mlt_properties properties = mlt_producer_properties( this );
+ char *resource = mlt_properties_get( properties, "resource" );
+ char *service = mlt_properties_get( properties, "mlt_service" );
+
+ if ( service != NULL )
+ clone = mlt_factory_producer( service, resource );
+
+ if ( clone == NULL && resource != NULL )
+ clone = mlt_factory_producer( "fezzik", resource );
+
+ if ( clone != NULL )
+ mlt_properties_inherit( mlt_producer_properties( clone ), properties );
+
+ return clone;
+}
+
+/** Create clones.
+*/
+
+static void mlt_producer_set_clones( mlt_producer this, int clones )
+{
+ mlt_producer parent = mlt_producer_cut_parent( this );
+ mlt_properties properties = mlt_producer_properties( parent );
+ int existing = mlt_properties_get_int( properties, "_clones" );
+ int i = 0;
+ char key[ 25 ];
+
+ // If the number of existing clones is different, then create/remove as necessary
+ if ( existing != clones )
+ {
+ if ( existing < clones )
+ {
+ for ( i = existing; i < clones; i ++ )
+ {
+ mlt_producer clone = mlt_producer_clone( parent );
+ sprintf( key, "_clone.%d", i );
+ mlt_properties_set_data( properties, key, clone, 0, ( mlt_destructor )mlt_producer_close, NULL );
+ }
+ }
+ else
+ {
+ for ( i = clones; i < existing; i ++ )
+ {
+ sprintf( key, "_clone.%d", i );
+ mlt_properties_set_data( properties, key, NULL, 0, NULL, NULL );
+ }
+ }
}
- // 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_int( properties, "test_audio", mlt_frame_is_test_audio( *frame ) );
- mlt_properties_set_int( properties, "test_image", mlt_frame_is_test_card( *frame ) );
+ // Ensure all properties on the parent are passed to the clones
+ for ( i = 0; i < clones; i ++ )
+ {
+ mlt_producer clone = NULL;
+ sprintf( key, "_clone.%d", i );
+ clone = mlt_properties_get_data( properties, key, NULL );
+ if ( clone != NULL )
+ mlt_properties_pass( mlt_producer_properties( clone ), properties, "" );
+ }
+
+ // Update the number of clones on the properties
+ mlt_properties_set_int( properties, "_clones", clones );
+}
+
+/** Optimise for overlapping cuts from the same clip.
+*/
+typedef struct
+{
+ int multitrack;
+ int track;
+ int position;
+ int length;
+ int offset;
+}
+track_info;
+
+typedef struct
+{
+ mlt_producer cut;
+ int start;
+ int end;
+}
+clip_references;
+
+static int intersect( clip_references *a, clip_references *b )
+{
+ int diff = ( a->start - b->start ) + ( a->end - b->end );
+ return diff >= 0 && diff < ( a->end - a->start + 1 );
+}
+
+static int push( mlt_parser this, int multitrack, int track, int position )
+{
+ mlt_properties properties = mlt_parser_properties( this );
+ mlt_deque stack = mlt_properties_get_data( properties, "stack", NULL );
+ track_info *info = malloc( sizeof( track_info ) );
+ info->multitrack = multitrack;
+ info->track = track;
+ info->position = position;
+ info->length = 0;
+ info->offset = 0;
+ return mlt_deque_push_back( stack, info );
+}
+
+static track_info *pop( mlt_parser this )
+{
+ mlt_properties properties = mlt_parser_properties( this );
+ mlt_deque stack = mlt_properties_get_data( properties, "stack", NULL );
+ return mlt_deque_pop_back( stack );
+}
+
+static track_info *peek( mlt_parser this )
+{
+ mlt_properties properties = mlt_parser_properties( this );
+ mlt_deque stack = mlt_properties_get_data( properties, "stack", NULL );
+ return mlt_deque_peek_back( stack );
+}
+
+static int on_start_multitrack( mlt_parser this, mlt_multitrack object )
+{
+ track_info *info = peek( this );
+ return push( this, info->multitrack ++, info->track, info->position );
+}
+
+static int on_start_track( mlt_parser this )
+{
+ track_info *info = peek( this );
+ info->position -= info->offset;
+ info->length -= info->offset;
+ return push( this, info->multitrack, info->track ++, info->position );
+}
+
+static int on_start_producer( mlt_parser this, mlt_producer object )
+{
+ mlt_properties properties = mlt_parser_properties( this );
+ mlt_properties producers = mlt_properties_get_data( properties, "producers", NULL );
+ mlt_producer parent = mlt_producer_cut_parent( object );
+ if ( mlt_service_identify( ( mlt_service )mlt_producer_cut_parent( object ) ) == producer_type && mlt_producer_is_cut( object ) )
+ {
+ int ref_count = 0;
+ clip_references *old_refs = NULL;
+ clip_references *refs = NULL;
+ char key[ 50 ];
+ int count = 0;
+ track_info *info = peek( this );
+ sprintf( key, "%p", parent );
+ mlt_properties_get_data( producers, key, &count );
+ mlt_properties_set_data( producers, key, parent, ++ count, NULL, NULL );
+ old_refs = mlt_properties_get_data( properties, key, &ref_count );
+ refs = malloc( ( ref_count + 1 ) * sizeof( clip_references ) );
+ if ( old_refs != NULL )
+ memcpy( refs, old_refs, ref_count * sizeof( clip_references ) );
+ mlt_properties_set_int( mlt_producer_properties( object ), "_clone", -1 );
+ refs[ ref_count ].cut = object;
+ refs[ ref_count ].start = info->position;
+ refs[ ref_count ].end = info->position + mlt_producer_get_playtime( object ) - 1;
+ mlt_properties_set_data( properties, key, refs, ++ ref_count, free, NULL );
+ info->position += mlt_producer_get_playtime( object );
+ info->length += mlt_producer_get_playtime( object );
+ }
+ return 0;
+}
+
+static int on_end_track( mlt_parser this )
+{
+ track_info *track = pop( this );
+ track_info *multi = peek( this );
+ multi->length += track->length;
+ multi->position += track->length;
+ multi->offset = track->length;
+ free( track );
return 0;
}
+static int on_end_multitrack( mlt_parser this, mlt_multitrack object )
+{
+ track_info *multi = pop( this );
+ track_info *track = peek( this );
+ track->position += multi->length;
+ track->length += multi->length;
+ free( multi );
+ return 0;
+}
+
+int mlt_producer_optimise( mlt_producer this )
+{
+ int error = 1;
+ mlt_parser parser = mlt_parser_new( );
+ if ( parser != NULL )
+ {
+ int i = 0, j = 0, k = 0;
+ mlt_properties properties = mlt_parser_properties( parser );
+ mlt_properties producers = mlt_properties_new( );
+ mlt_deque stack = mlt_deque_init( );
+ mlt_properties_set_data( properties, "producers", producers, 0, ( mlt_destructor )mlt_properties_close, NULL );
+ mlt_properties_set_data( properties, "stack", stack, 0, ( mlt_destructor )mlt_deque_close, NULL );
+ parser->on_start_producer = on_start_producer;
+ parser->on_start_track = on_start_track;
+ parser->on_end_track = on_end_track;
+ parser->on_start_multitrack = on_start_multitrack;
+ parser->on_end_multitrack = on_end_multitrack;
+ push( parser, 0, 0, 0 );
+ mlt_parser_start( parser, mlt_producer_service( this ) );
+ free( pop( parser ) );
+ for ( k = 0; k < mlt_properties_count( producers ); k ++ )
+ {
+ char *name = mlt_properties_get_name( producers, k );
+ int count = 0;
+ int clones = 0;
+ int max_clones = 0;
+ mlt_producer producer = mlt_properties_get_data( producers, name, &count );
+ if ( producer != NULL && count > 1 )
+ {
+ clip_references *refs = mlt_properties_get_data( properties, name, &count );
+ for ( i = 0; i < count; i ++ )
+ {
+ clones = 0;
+ for ( j = i + 1; j < count; j ++ )
+ {
+ if ( intersect( &refs[ i ], &refs[ j ] ) )
+ {
+ clones ++;
+ mlt_properties_set_int( mlt_producer_properties( refs[ j ].cut ), "_clone", clones );
+ }
+ }
+ if ( clones > max_clones )
+ max_clones = clones;
+ }
+
+ for ( i = 0; i < count; i ++ )
+ {
+ mlt_producer cut = refs[ i ].cut;
+ if ( mlt_properties_get_int( mlt_producer_properties( cut ), "_clone" ) == -1 )
+ mlt_properties_set_int( mlt_producer_properties( cut ), "_clone", 0 );
+ }
+
+ mlt_producer_set_clones( producer, max_clones );
+ }
+ else if ( producer != NULL )
+ {
+ clip_references *refs = mlt_properties_get_data( properties, name, &count );
+ for ( i = 0; i < count; i ++ )
+ {
+ mlt_producer cut = refs[ i ].cut;
+ mlt_properties_set_int( mlt_producer_properties( cut ), "_clone", 0 );
+ }
+ mlt_producer_set_clones( producer, 0 );
+ }
+ }
+ mlt_parser_close( parser );
+ }
+ return error;
+}
+
/** Close the producer.
*/
projects / mlt / blobdiff