X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_producer.c;h=7edb53a4da27afa6b57761432ebbbad7b4163e37;hb=bf3264b9e340ba5c11cbf59835a8af3db94e0cc2;hp=bb6462c4c25478b5a2888d98353f6276f1a81ef9;hpb=f1a97a77d0847a3cb4230ecf9fd088d1613e6540;p=melted diff --git a/src/framework/mlt_producer.c b/src/framework/mlt_producer.c index bb6462c..7edb53a 100644 --- a/src/framework/mlt_producer.c +++ b/src/framework/mlt_producer.c @@ -3,25 +3,26 @@ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited * Author: Charles Yates * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. * - * This program is distributed in the hope that it will be useful, + * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "mlt_producer.h" #include "mlt_factory.h" #include "mlt_frame.h" +#include "mlt_parser.h" #include #include #include @@ -34,6 +35,13 @@ 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 ); +//#define _MLT_PRODUCER_CHECKS_ 1 + +#ifdef _MLT_PRODUCER_CHECKS_ +static int producers_created = 0; +static int producers_destroyed = 0; +#endif + /** Constructor */ @@ -45,6 +53,10 @@ int mlt_producer_init( mlt_producer this, void *child ) // Continue if no error if ( error == 0 ) { +#ifdef _MLT_PRODUCER_CHECKS_ + producers_created ++; +#endif + // Initialise the producer memset( this, 0, sizeof( struct mlt_producer_s ) ); @@ -68,7 +80,7 @@ int mlt_producer_init( mlt_producer this, void *child ) this->close_object = this; // Get the properties of the parent - mlt_properties properties = mlt_service_properties( parent ); + mlt_properties properties = MLT_SERVICE_PROPERTIES( parent ); // Set the default properties mlt_properties_set( properties, "mlt_type", "mlt_producer" ); @@ -77,12 +89,16 @@ int mlt_producer_init( mlt_producer this, void *child ) 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_int( properties, "frame_rate_num", 25 ); + mlt_properties_set_int( properties, "frame_rate_den", 1 ); + 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_int( properties, "frame_rate_num", 30000 ); + mlt_properties_set_int( properties, "frame_rate_den", 1001 ); + 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 ); @@ -109,7 +125,7 @@ int mlt_producer_init( mlt_producer this, void *child ) 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 ); + mlt_events_fire( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( this ) ), "producer-changed", NULL ); } /** Listener for service changes. @@ -117,7 +133,7 @@ static void mlt_producer_property_changed( mlt_service owner, mlt_producer this, 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 ); + mlt_events_fire( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( this ) ), "producer-changed", NULL ); } /** Create a new producer. @@ -135,7 +151,25 @@ mlt_producer mlt_producer_new( ) int mlt_producer_is_cut( mlt_producer this ) { - return mlt_properties_get_int( mlt_producer_properties( this ), "_cut" ); + 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; +} + +/** Determine if the producer is a blank [from a playlist]. +*/ + +int mlt_producer_is_blank( mlt_producer this ) +{ + return this == NULL || !strcmp( mlt_properties_get( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( this ) ), "resource" ), "blank" ); } /** Obtain the parent producer. @@ -143,7 +177,7 @@ int mlt_producer_is_cut( mlt_producer this ) mlt_producer mlt_producer_cut_parent( mlt_producer this ) { - mlt_properties properties = mlt_producer_properties( this ); + mlt_properties properties = MLT_PRODUCER_PROPERTIES( this ); if ( mlt_producer_is_cut( this ) ) return mlt_properties_get_data( properties, "_cut_parent", NULL ); else @@ -157,23 +191,29 @@ 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 ); + mlt_properties properties = MLT_PRODUCER_PROPERTIES( result ); + mlt_properties parent_props = MLT_PRODUCER_PROPERTIES( parent ); + mlt_events_block( MLT_PRODUCER_PROPERTIES( result ), MLT_PRODUCER_PROPERTIES( result ) ); // 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; + if ( ( out < 0 || out >= mlt_producer_get_length( parent ) ) && !mlt_producer_is_blank( this ) ) + out = mlt_producer_get_length( 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_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( parent_props, "aspect_ratio" ) ); mlt_producer_set_in_and_out( result, in, out ); + // Mini fezzik :-/ + mlt_filter filter = mlt_factory_filter( "data_feed", "attr_check" ); + mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "_fezzik", 1 ); + mlt_producer_attach( result, filter ); + mlt_filter_close( filter ); + return result; } @@ -190,7 +230,7 @@ mlt_service mlt_producer_service( mlt_producer this ) mlt_properties mlt_producer_properties( mlt_producer this ) { - return mlt_service_properties( &this->parent ); + return MLT_SERVICE_PROPERTIES( &this->parent ); } /** Seek to a specified position. @@ -199,34 +239,35 @@ mlt_properties mlt_producer_properties( mlt_producer this ) int mlt_producer_seek( mlt_producer this, mlt_position position ) { // Determine eof handling - mlt_properties properties = mlt_producer_properties( this ); + 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... + // Recursive behaviour for cuts - repositions parent and then repositions cut + // hence no return on this condition 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 ) + if ( position < 0 || mlt_producer_get_playtime( this ) == 0 ) { position = 0; } - else if ( use_points && !strcmp( eof, "pause" ) && position >= mlt_producer_get_playtime( this ) ) + else if ( use_points && ( eof == NULL || !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 ); + position = (int)position % (int)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", use_points * 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; } @@ -236,7 +277,7 @@ int mlt_producer_seek( mlt_producer this, mlt_position position ) 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). @@ -244,7 +285,7 @@ mlt_position mlt_producer_position( mlt_producer this ) 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. @@ -252,7 +293,7 @@ mlt_position mlt_producer_frame( mlt_producer this ) 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. @@ -260,7 +301,7 @@ int mlt_producer_set_speed( mlt_producer this, double 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. @@ -268,7 +309,7 @@ double mlt_producer_get_speed( mlt_producer this ) double mlt_producer_get_fps( mlt_producer this ) { - return mlt_properties_get_double( mlt_producer_properties( this ), "fps" ); + return mlt_properties_get_double( MLT_PRODUCER_PROPERTIES( this ), "fps" ); } /** Set the in and out points. @@ -276,18 +317,20 @@ double mlt_producer_get_fps( mlt_producer this ) int mlt_producer_set_in_and_out( mlt_producer this, mlt_position in, mlt_position out ) { - mlt_properties properties = mlt_producer_properties( this ); + mlt_properties properties = MLT_PRODUCER_PROPERTIES( this ); // Correct ins and outs if necessary if ( in < 0 ) in = 0; - else if ( in > mlt_producer_get_length( this ) ) - in = mlt_producer_get_length( this ); + else if ( in >= mlt_producer_get_length( this ) ) + in = mlt_producer_get_length( this ) - 1; if ( out < 0 ) out = 0; - else if ( out > mlt_producer_get_length( this ) ) - out = mlt_producer_get_length( this ); + else if ( out >= mlt_producer_get_length( this ) && !mlt_producer_is_blank( this ) ) + out = mlt_producer_get_length( this ) - 1; + else if ( out >= mlt_producer_get_length( this ) && mlt_producer_is_blank( this ) ) + mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( this ), "length", out + 1 ); // Swap ins and outs if wrong if ( out < in ) @@ -314,7 +357,7 @@ int mlt_producer_clear( mlt_producer this ) { if ( this != NULL ) { - mlt_properties properties = mlt_producer_properties( this ); + mlt_properties properties = MLT_PRODUCER_PROPERTIES( this ); mlt_events_block( properties, properties ); mlt_properties_set_position( properties, "in", 0 ); mlt_events_unblock( properties, properties ); @@ -328,7 +371,7 @@ int mlt_producer_clear( mlt_producer this ) mlt_position mlt_producer_get_in( mlt_producer this ) { - return mlt_properties_get_position( mlt_producer_properties( this ), "in" ); + return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "in" ); } /** Get the out point. @@ -336,7 +379,7 @@ mlt_position mlt_producer_get_in( mlt_producer this ) mlt_position mlt_producer_get_out( mlt_producer this ) { - return mlt_properties_get_position( mlt_producer_properties( this ), "out" ); + return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "out" ); } /** Get the total play time. @@ -352,7 +395,7 @@ mlt_position mlt_producer_get_playtime( mlt_producer this ) mlt_position mlt_producer_get_length( mlt_producer this ) { - return mlt_properties_get_position( mlt_producer_properties( this ), "length" ); + return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "length" ); } /** Prepare for next frame. @@ -360,7 +403,8 @@ mlt_position mlt_producer_get_length( mlt_producer this ) void mlt_producer_prepare_next( mlt_producer this ) { - mlt_producer_seek( this, mlt_producer_position( this ) + mlt_producer_get_speed( this ) ); + if ( mlt_producer_get_speed( this ) != 0 ) + mlt_producer_seek( this, mlt_producer_position( this ) + mlt_producer_get_speed( this ) ); } /** Get a frame. @@ -369,12 +413,24 @@ void mlt_producer_prepare_next( mlt_producer this ) static int producer_get_frame( mlt_service service, mlt_frame_ptr frame, int index ) { int result = 1; - mlt_producer this = service->child; + mlt_producer this = service != NULL ? service->child : NULL; - if ( !mlt_producer_is_cut( this ) ) + if ( this != NULL && !mlt_producer_is_cut( this ) ) { + // 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" ); + char *eof = mlt_properties_get( MLT_PRODUCER_PROPERTIES( this ), "eof" ); + + // Get the speed of the producer + double speed = mlt_producer_get_speed( this ); + + // We need to use the clone if it's specified + mlt_producer clone = mlt_properties_get_data( properties, "use_clone", NULL ); + + // 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 ) ) ) @@ -386,8 +442,8 @@ static int producer_get_frame( mlt_service service, mlt_frame_ptr frame, int ind 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 ); + 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 ); @@ -395,26 +451,92 @@ static int producer_get_frame( mlt_service service, mlt_frame_ptr frame, int ind else { // Get the frame from the implementation - result = this->get_frame( this, frame, index ); + result = this->get_frame( clone, frame, index ); } // Copy the fps and speed of the producer onto the frame - mlt_properties properties = mlt_frame_properties( *frame ); - double speed = mlt_producer_get_speed( this ); + 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 + else if ( this != NULL ) { - mlt_properties properties = mlt_producer_properties( this ); - mlt_producer_seek( this, mlt_properties_get_int( properties, "_position" ) ); - result = producer_get_frame( mlt_producer_service( mlt_producer_cut_parent( this ) ), frame, index ); + // Get the speed of the cut double speed = mlt_producer_get_speed( this ); - mlt_properties_set_double( mlt_frame_properties( *frame ), "_speed", speed ); + + // 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 ); + + // This is useful and required by always_active transitions to determine in/out points of the cut + if ( mlt_properties_get_data( MLT_FRAME_PROPERTIES( *frame ), "_producer", NULL ) == MLT_PRODUCER_SERVICE( parent ) ) + mlt_properties_set_data( MLT_FRAME_PROPERTIES( *frame ), "_producer", this, 0, NULL, NULL ); + + mlt_properties_set_double( MLT_FRAME_PROPERTIES( *frame ), "_speed", speed ); mlt_producer_prepare_next( this ); } + else + { + *frame = mlt_frame_init( ); + result = 0; + } + + // Pass on all meta properties from the producer/cut on to the frame + if ( *frame != NULL && this != NULL ) + { + int i = 0; + mlt_properties p_props = MLT_PRODUCER_PROPERTIES( this ); + mlt_properties f_props = MLT_FRAME_PROPERTIES( *frame ); + int count = mlt_properties_count( p_props ); + for ( i = 0; i < count; i ++ ) + { + char *name = mlt_properties_get_name( p_props, i ); + if ( !strncmp( name, "meta.", 5 ) ) + mlt_properties_set( f_props, name, mlt_properties_get( p_props, name ) ); + else if ( !strncmp( name, "set.", 4 ) ) + mlt_properties_set( f_props, name + 4, mlt_properties_get( p_props, name ) ); + } + } return result; } @@ -424,7 +546,7 @@ static int producer_get_frame( mlt_service service, mlt_frame_ptr frame, int ind int mlt_producer_attach( mlt_producer this, mlt_filter filter ) { - return mlt_service_attach( mlt_producer_service( this ), filter ); + return mlt_service_attach( MLT_PRODUCER_SERVICE( this ), filter ); } /** Detach a filter. @@ -432,7 +554,7 @@ int mlt_producer_attach( mlt_producer this, mlt_filter filter ) int mlt_producer_detach( mlt_producer this, mlt_filter filter ) { - return mlt_service_detach( mlt_producer_service( this ), filter ); + return mlt_service_detach( MLT_PRODUCER_SERVICE( this ), filter ); } /** Retrieve a filter. @@ -440,7 +562,270 @@ int mlt_producer_detach( mlt_producer this, mlt_filter filter ) mlt_filter mlt_producer_filter( mlt_producer this, int index ) { - return mlt_service_filter( mlt_producer_service( this ), 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" ); + + mlt_events_block( mlt_factory_event_object( ), mlt_factory_event_object( ) ); + + 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 ); + + mlt_events_unblock( mlt_factory_event_object( ), mlt_factory_event_object( ) ); + + 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 ); + } + } + } + + // 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. @@ -448,13 +833,35 @@ mlt_filter mlt_producer_filter( mlt_producer this, int index ) void mlt_producer_close( mlt_producer this ) { - if ( this != NULL && mlt_properties_dec_ref( mlt_producer_properties( this ) ) <= 0 ) + if ( this != NULL && mlt_properties_dec_ref( MLT_PRODUCER_PROPERTIES( this ) ) <= 0 ) { this->parent.close = NULL; if ( this->close != NULL ) + { this->close( this->close_object ); + } else + { + int destroy = mlt_producer_is_cut( this ); + +#if _MLT_PRODUCER_CHECKS_ == 1 + // Show debug info + mlt_properties_debug( MLT_PRODUCER_PROPERTIES( this ), "Producer closing", stderr ); +#endif + +#ifdef _MLT_PRODUCER_CHECKS_ + // Increment destroyed count + producers_destroyed ++; + + // Show current stats - these should match when the app is closed + fprintf( stderr, "Producers created %d, destroyed %d\n", producers_created, producers_destroyed ); +#endif + mlt_service_close( &this->parent ); + + if ( destroy ) + free( this ); + } } }