static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
static int mlt_playlist_unmix( mlt_playlist self, int clip );
static int mlt_playlist_resize_mix( mlt_playlist self, int clip, int in, int out );
+static void mlt_playlist_next( mlt_listener listener, mlt_properties owner, mlt_service self, void **args );
/** Construct a playlist.
*
mlt_playlist mlt_playlist_init( )
{
- mlt_playlist self = calloc( sizeof( struct mlt_playlist_s ), 1 );
+ mlt_playlist self = calloc( 1, sizeof( struct mlt_playlist_s ) );
if ( self != NULL )
{
mlt_producer producer = &self->parent;
// Construct the producer
- mlt_producer_init( producer, self );
+ if ( mlt_producer_init( producer, self ) != 0 ) goto error1;
// Override the producer get_frame
producer->get_frame = producer_get_frame;
producer->close_object = self;
// Initialise blank
- mlt_producer_init( &self->blank, NULL );
+ if ( mlt_producer_init( &self->blank, NULL ) != 0 ) goto error1;
mlt_properties_set( MLT_PRODUCER_PROPERTIES( &self->blank ), "mlt_service", "blank" );
mlt_properties_set( MLT_PRODUCER_PROPERTIES( &self->blank ), "resource", "blank" );
mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( self ), "length", 0 );
self->size = 10;
- self->list = malloc( self->size * sizeof( playlist_entry * ) );
+ self->list = calloc( self->size, sizeof( playlist_entry * ) );
+ if ( self->list == NULL ) goto error2;
+
+ mlt_events_register( MLT_PLAYLIST_PROPERTIES( self ), "playlist-next", (mlt_transmitter) mlt_playlist_next );
}
return self;
+error2:
+ free( self->list );
+error1:
+ free( self );
+ return NULL;
+}
+
+/** Construct a playlist with a profile.
+ *
+ * Sets the resource property to "<playlist>".
+ * Set the mlt_type to property to "mlt_producer".
+ * \public \memberof mlt_playlist_s
+ * \param profile the profile to use with the profile
+ * \return a new playlist
+ */
+
+mlt_playlist mlt_playlist_new( mlt_profile profile )
+{
+ mlt_playlist self = mlt_playlist_init();
+ if ( self )
+ mlt_properties_set_data( MLT_PLAYLIST_PROPERTIES( self ), "_profile", profile, 0, NULL, NULL );
+ return self;
}
/** Get the producer associated to this playlist.
}
// Create the entry
- self->list[ self->count ] = calloc( sizeof( playlist_entry ), 1 );
+ self->list[ self->count ] = calloc( 1, sizeof( playlist_entry ) );
if ( self->list[ self->count ] != NULL )
{
self->list[ self->count ]->producer = producer;
return producer;
}
+/** The transmitter for the producer-next event
+ *
+ * Invokes the listener.
+ *
+ * \private \memberof mlt_playlist_s
+ * \param listener a function pointer that will be invoked
+ * \param owner the events object that will be passed to \p listener
+ * \param self a service that will be passed to \p listener
+ * \param args an array of pointers.
+ */
+
+static void mlt_playlist_next( mlt_listener listener, mlt_properties owner, mlt_service self, void **args )
+{
+ if ( listener )
+ listener( owner, self, args[ 0 ] );
+}
+
+
/** Seek in the virtual playlist.
*
* This gets the producer at the current position and seeks on the producer
producer = &self->blank;
}
+ // Determine if we have moved to the next entry in the playlist.
+ if ( original == total - 2 )
+ mlt_events_fire( properties, "playlist-next", i, NULL );
+
return MLT_PRODUCER_SERVICE( producer );
}
*
* \public \memberof mlt_playlist_s
* \param self a playlist
- * \param length the ending time of the blank entry, not its duration
+ * \param out the ending time of the blank entry, not its duration
* \return true if there was an error
*/
-int mlt_playlist_blank( mlt_playlist self, mlt_position length )
+int mlt_playlist_blank( mlt_playlist self, mlt_position out )
{
// Append to the virtual list
- if (length >= 0)
- return mlt_playlist_virtual_append( self, &self->blank, 0, length );
+ if ( out >= 0 )
+ return mlt_playlist_virtual_append( self, &self->blank, 0, out );
+ else
+ return 1;
+}
+
+/** Append a blank item to the playlist with duration as a time string.
+ *
+ * \public \memberof mlt_playlist_s
+ * \param self a playlist
+ * \param length the duration of the blank entry as a time string
+ * \return true if there was an error
+ */
+
+int mlt_playlist_blank_time( mlt_playlist self, const char* length )
+{
+ if ( self && length )
+ {
+ mlt_properties properties = MLT_PLAYLIST_PROPERTIES( self );
+ mlt_properties_set( properties , "_blank_time", length );
+ mlt_position duration = mlt_properties_get_position( properties, "_blank_time" );
+ return mlt_playlist_blank( self, duration - 1 );
+ }
else
return 1;
}
// Get the clip info
mlt_playlist_get_clip_info( self, &where_info, where );
- // Make sure the clip to be removed is valid and correct if necessary
- if ( where < 0 )
- where = 0;
- if ( where >= self->count )
- where = self->count - 1;
-
// Reorganise the list
for ( i = where + 1; i < self->count; i ++ )
self->list[ i - 1 ] = self->list[ i ];
if ( error == 0 )
{
int i = clip;
- mlt_playlist new_clip = mlt_playlist_init( );
+ mlt_playlist new_clip = mlt_playlist_new( mlt_service_profile( MLT_PLAYLIST_SERVICE(self) ) );
mlt_events_block( MLT_PLAYLIST_PROPERTIES( self ), self );
if ( clip + count >= self->count )
count = self->count - clip - 1;
/** Mix consecutive clips for a specified length and apply transition if specified.
*
+ * This version of the mix function does not utilize any frames beyond the out of
+ * clip A or before the in point of clip B. It takes the frames needed for the length
+ * of the transition by adjusting the duration of both clips - the out point for clip A
+ * and the in point for clip B.
* \public \memberof mlt_playlist_s
* \param self a playlist
* \param clip the index of the playlist entry
mlt_producer track_a = NULL;
mlt_producer track_b = NULL;
mlt_tractor tractor = mlt_tractor_new( );
+
+ mlt_service_set_profile( MLT_TRACTOR_SERVICE( tractor ),
+ mlt_service_profile( MLT_PLAYLIST_SERVICE( self ) ) );
+ mlt_properties_set_lcnumeric( MLT_TRACTOR_PROPERTIES( tractor ),
+ mlt_properties_get_lcnumeric( MLT_PLAYLIST_PROPERTIES( self ) ) );
mlt_events_block( MLT_PLAYLIST_PROPERTIES( self ), self );
// Check length is valid for both clips and resize if necessary.
return error;
}
+/** Mix consecutive clips for a specified length.
+ *
+ * This version of the mix function maintains the out point of the clip A by occupying the
+ * beginning of clip B before its current in point. Therefore, it ends up adjusting the in
+ * point and duration of clip B without affecting the duration of clip A.
+ * Also, therefore, there must be enough frames after the out point of clip A.
+ * \public \memberof mlt_playlist_s
+ * \param self a playlist
+ * \param clip the index of the playlist entry
+ * \param length the number of frames over which to create the mix
+ * \return true if there was an error
+ */
+
+int mlt_playlist_mix_in( mlt_playlist self, int clip, int length )
+{
+ int error = ( clip < 0 || clip + 1 >= self->count );
+ if ( error == 0 )
+ {
+ playlist_entry *clip_a = self->list[ clip ];
+ playlist_entry *clip_b = self->list[ clip + 1 ];
+ mlt_producer track_a = NULL;
+ mlt_producer track_b = NULL;
+ mlt_tractor tractor = mlt_tractor_new( );
+
+ mlt_service_set_profile( MLT_TRACTOR_SERVICE( tractor ),
+ mlt_service_profile( MLT_PLAYLIST_SERVICE( self ) ) );
+ mlt_properties_set_lcnumeric( MLT_TRACTOR_PROPERTIES( tractor ),
+ mlt_properties_get_lcnumeric( MLT_PLAYLIST_PROPERTIES( self ) ) );
+ mlt_events_block( MLT_PLAYLIST_PROPERTIES( self ), self );
+
+ // Check length is valid for both clips and resize if necessary.
+ int max_size = ( clip_a->frame_out + 1 ) > clip_b->frame_count ? ( clip_a->frame_out + 1 ) : clip_b->frame_count;
+ length = length > max_size ? max_size : length;
+
+ // Create the a and b tracks/cuts if necessary - note that no cuts are required if the length matches
+ if ( length != clip_a->frame_out + 1 )
+ track_a = mlt_producer_cut( clip_a->producer, clip_a->frame_out + 1, clip_a->frame_out + length );
+ else
+ track_a = clip_a->producer;
+
+ if ( length != clip_b->frame_count )
+ track_b = mlt_producer_cut( clip_b->producer, clip_b->frame_in, clip_b->frame_in + length - 1 );
+ else
+ track_b = clip_b->producer;
+
+ // Set the tracks on the tractor
+ mlt_tractor_set_track( tractor, track_a, 0 );
+ mlt_tractor_set_track( tractor, track_b, 1 );
+
+ // Insert the mix object into the playlist
+ mlt_playlist_insert( self, MLT_TRACTOR_PRODUCER( tractor ), clip + 1, -1, -1 );
+ mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mlt_mix", tractor, 0, NULL, NULL );
+
+ // Close our references to the tracks if we created new cuts above (the tracks can still be used here)
+ if ( track_a != clip_a->producer )
+ mlt_producer_close( track_a );
+ if ( track_b != clip_b->producer )
+ mlt_producer_close( track_b );
+
+ // Check if we have anything left on the right hand clip
+ if ( track_b == clip_b->producer )
+ {
+ clip_b->preservation_hack = 1;
+ mlt_playlist_remove( self, clip + 2 );
+ }
+ else if ( clip_b->frame_out - clip_b->frame_in >= length )
+ {
+ mlt_playlist_resize_clip( self, clip + 2, clip_b->frame_in + length, clip_b->frame_out );
+ mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_b->producer ), "mix_in", tractor, 0, NULL, NULL );
+ mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mix_out", clip_b->producer, 0, NULL, NULL );
+ }
+ else
+ {
+ mlt_producer_clear( clip_b->producer );
+ mlt_playlist_remove( self, clip + 2 );
+ }
+
+ // Check if we have anything left on the left hand clip
+ if ( track_a == clip_a->producer )
+ {
+ clip_a->preservation_hack = 1;
+ mlt_playlist_remove( self, clip );
+ }
+ else if ( clip_a->frame_out - clip_a->frame_in > 0 )
+ {
+ mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_a->producer ), "mix_out", tractor, 0, NULL, NULL );
+ mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mix_in", clip_a->producer, 0, NULL, NULL );
+ }
+ else
+ {
+ mlt_producer_clear( clip_a->producer );
+ mlt_playlist_remove( self, clip );
+ }
+
+ // Unblock and force a fire off of change events to listeners
+ mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( self ), self );
+ mlt_playlist_virtual_refresh( self );
+ mlt_tractor_close( tractor );
+ }
+ return error;
+}
+
+/** Mix consecutive clips for a specified length.
+ *
+ * This version of the mix function maintains the in point of the B clip by occupying the
+ * end of clip A before its current out point. Therefore, it ends up adjusting the out
+ * point and duration of clip A without affecting the duration or starting frame of clip B.
+ * Also, therefore, there must be enough frames before the in point of clip B.
+ * \public \memberof mlt_playlist_s
+ * \param self a playlist
+ * \param clip the index of the playlist entry
+ * \param length the number of frames over which to create the mix
+ * \return true if there was an error
+ */
+
+int mlt_playlist_mix_out( mlt_playlist self, int clip, int length )
+{
+ int error = ( clip < 0 || clip + 1 >= self->count );
+ if ( error == 0 )
+ {
+ playlist_entry *clip_a = self->list[ clip ];
+ playlist_entry *clip_b = self->list[ clip + 1 ];
+ mlt_producer track_a = NULL;
+ mlt_producer track_b = NULL;
+ mlt_tractor tractor = mlt_tractor_new( );
+
+ mlt_service_set_profile( MLT_TRACTOR_SERVICE( tractor ),
+ mlt_service_profile( MLT_PLAYLIST_SERVICE( self ) ) );
+ mlt_properties_set_lcnumeric( MLT_TRACTOR_PROPERTIES( tractor ),
+ mlt_properties_get_lcnumeric( MLT_PLAYLIST_PROPERTIES( self ) ) );
+ mlt_events_block( MLT_PLAYLIST_PROPERTIES( self ), self );
+
+ // Check length is valid for both clips and resize if necessary.
+ int max_size = clip_a->frame_count > clip_b->frame_in ? clip_a->frame_count : clip_b->frame_in;
+ length = length > max_size ? max_size : length;
+
+ // Create the a and b tracks/cuts if necessary - note that no cuts are required if the length matches
+ if ( length != clip_a->frame_count )
+ track_a = mlt_producer_cut( clip_a->producer, clip_a->frame_out - length + 1, clip_a->frame_out );
+ else
+ track_a = clip_a->producer;
+
+ if ( length != clip_b->frame_in )
+ track_b = mlt_producer_cut( clip_b->producer, clip_b->frame_in - length + 1, clip_b->frame_in );
+ else
+ track_b = clip_b->producer;
+
+ // Set the tracks on the tractor
+ mlt_tractor_set_track( tractor, track_a, 0 );
+ mlt_tractor_set_track( tractor, track_b, 1 );
+
+ // Insert the mix object into the playlist
+ mlt_playlist_insert( self, MLT_TRACTOR_PRODUCER( tractor ), clip + 1, -1, -1 );
+ mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mlt_mix", tractor, 0, NULL, NULL );
+
+ // Close our references to the tracks if we created new cuts above (the tracks can still be used here)
+ if ( track_a != clip_a->producer )
+ mlt_producer_close( track_a );
+ if ( track_b != clip_b->producer )
+ mlt_producer_close( track_b );
+
+ // Check if we have anything left on the right hand clip
+ if ( track_b == clip_b->producer )
+ {
+ clip_b->preservation_hack = 1;
+ mlt_playlist_remove( self, clip + 2 );
+ }
+ else if ( clip_b->frame_out - clip_b->frame_in > 0 )
+ {
+ mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_b->producer ), "mix_in", tractor, 0, NULL, NULL );
+ mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mix_out", clip_b->producer, 0, NULL, NULL );
+ }
+ else
+ {
+ mlt_producer_clear( clip_b->producer );
+ mlt_playlist_remove( self, clip + 2 );
+ }
+
+ // Check if we have anything left on the left hand clip
+ if ( track_a == clip_a->producer )
+ {
+ clip_a->preservation_hack = 1;
+ mlt_playlist_remove( self, clip );
+ }
+ else if ( clip_a->frame_out - clip_a->frame_in >= length )
+ {
+ mlt_playlist_resize_clip( self, clip, clip_a->frame_in, clip_a->frame_out - length );
+ mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_a->producer ), "mix_out", tractor, 0, NULL, NULL );
+ mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mix_in", clip_a->producer, 0, NULL, NULL );
+ }
+ else
+ {
+ mlt_producer_clear( clip_a->producer );
+ mlt_playlist_remove( self, clip );
+ }
+
+ // Unblock and force a fire off of change events to listeners
+ mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( self ), self );
+ mlt_playlist_virtual_refresh( self );
+ mlt_tractor_close( tractor );
+ }
+ return error;
+}
+
/** Add a transition to an existing mix.
*
* \public \memberof mlt_playlist_s
* \public \memberof mlt_playlist_s
* \param self a playlist
* \param clip the index of the playlist entry
- * \return true if there was an error
+ * \return true if \p clip is a "blank" producer
*/
int mlt_playlist_is_blank( mlt_playlist self, int clip )
* \public \memberof mlt_playlist_s
* \param self a playlist
* \param clip the index of the new blank section
- * \param length the ending time of the new blank section (duration - 1)
+ * \param out the ending time of the new blank section (duration - 1)
*/
-void mlt_playlist_insert_blank( mlt_playlist self, int clip, int length )
+void mlt_playlist_insert_blank( mlt_playlist self, int clip, int out )
{
- if ( self != NULL && length >= 0 )
+ if ( self != NULL && out >= 0 )
{
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( self );
mlt_events_block( properties, properties );
- mlt_playlist_blank( self, length );
+ mlt_playlist_blank( self, out );
mlt_playlist_move( self, self->count - 1, clip );
mlt_events_unblock( properties, properties );
mlt_playlist_virtual_refresh( self );
projects / mlt / blobdiff