X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_producer.c;h=9ae6d798b568951dc9e4ae5c07ce76d4a3528878;hb=0942454258a07166839a999c71b6fa35785ac70a;hp=f4e5bd591f86333027db308d0e13f1853cf55938;hpb=1d46befd8150131541aa98e93573d5d6e54e9c3a;p=melted diff --git a/src/framework/mlt_producer.c b/src/framework/mlt_producer.c index f4e5bd5..9ae6d79 100644 --- a/src/framework/mlt_producer.c +++ b/src/framework/mlt_producer.c @@ -36,38 +36,46 @@ static int producer_get_frame( mlt_service this, mlt_frame_ptr frame, int index 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, "log_id", "multitrack" ); - - // 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 ) + { + // 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", "" ); + + // Override service get_frame + parent->get_frame = producer_get_frame; + } } - return 0; + return error; } /** Get the parent service object. @@ -91,17 +99,20 @@ mlt_properties mlt_producer_properties( mlt_producer this ) int mlt_producer_seek( mlt_producer this, mlt_position position ) { + // Determine eof handling + char *eof = mlt_properties_get( mlt_producer_properties( this ), "eof" ); + // Check bounds if ( position < 0 ) position = 0; - else if ( position > mlt_producer_get_playtime( this ) ) + else if ( !strcmp( eof, "pause" ) && position >= mlt_producer_get_playtime( this ) ) position = mlt_producer_get_playtime( this ) - 1; // 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", mlt_producer_get_in( this ) + position ); return 0; } @@ -111,7 +122,7 @@ 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). @@ -119,7 +130,7 @@ mlt_position mlt_producer_position( mlt_producer this ) mlt_position mlt_producer_frame( mlt_producer this ) { - return mlt_properties_get_double( mlt_producer_properties( this ), "frame" ); + return mlt_properties_get_position( mlt_producer_properties( this ), "_frame" ); } /** Set the playing speed. @@ -127,7 +138,7 @@ 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. @@ -135,7 +146,7 @@ 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. @@ -214,7 +225,7 @@ mlt_position mlt_producer_get_length( mlt_producer this ) void mlt_producer_prepare_next( mlt_producer this ) { - mlt_producer_seek( this, mlt_producer_frame( this ) + mlt_producer_get_speed( this ) ); + mlt_producer_seek( this, mlt_producer_position( this ) + mlt_producer_get_speed( this ) ); } /** Get a frame. @@ -225,13 +236,13 @@ static int producer_get_frame( mlt_service service, mlt_frame_ptr frame, int ind 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 ) - { - // Get the frame from the implementation - result = this->get_frame( this, frame, index ); - } - else +//fprintf( stderr, "PRODUCER get_frame %p eof %s pos %lld out %lld\n", +//this->get_frame, eof, mlt_producer_position( this ), mlt_producer_get_out( this ) ); + 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( ); @@ -242,12 +253,17 @@ static int producer_get_frame( mlt_service service, mlt_frame_ptr frame, int ind // Calculate the next position mlt_producer_prepare_next( this ); } + else + { + // Get the frame from the implementation + result = this->get_frame( this, frame, index ); + } // 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 ); return 0; }