X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_service.c;h=b1f5c25dd1c4342d3e848c489cd2f9e2e5a1e221;hb=de477d594bdd9c5d9ee2d3441cd0ccf49ab52feb;hp=7a66a577e417b40224d71bd2ce121080a9ddb26e;hpb=52c1bb26fcbb895824cd9237c228ea4834ce1433;p=melted diff --git a/src/framework/mlt_service.c b/src/framework/mlt_service.c index 7a66a57..b1f5c25 100644 --- a/src/framework/mlt_service.c +++ b/src/framework/mlt_service.c @@ -20,6 +20,7 @@ #include "config.h" #include "mlt_service.h" +#include "mlt_filter.h" #include "mlt_frame.h" #include #include @@ -44,6 +45,9 @@ typedef struct int count; mlt_service *in; mlt_service out; + int filter_count; + int filter_size; + mlt_filter *filters; } mlt_service_base; @@ -53,6 +57,7 @@ mlt_service_base; static void mlt_service_disconnect( mlt_service this ); static void mlt_service_connect( mlt_service this, mlt_service that ); static int service_get_frame( mlt_service this, mlt_frame_ptr frame, int index ); +static void mlt_service_property_changed( mlt_listener, mlt_properties owner, mlt_service this, void **args ); /** Constructor */ @@ -79,11 +84,56 @@ int mlt_service_init( mlt_service this, void *child ) { this->parent.close = ( mlt_destructor )mlt_service_close; this->parent.close_object = this; + + mlt_events_init( &this->parent ); + mlt_events_register( &this->parent, "service-changed", NULL ); + mlt_events_register( &this->parent, "property-changed", ( mlt_transmitter )mlt_service_property_changed ); } return error; } +static void mlt_service_property_changed( mlt_listener listener, mlt_properties owner, mlt_service this, void **args ) +{ + if ( listener != NULL ) + listener( owner, this, ( char * )args[ 0 ] ); +} + +mlt_service_type mlt_service_identify( mlt_service this ) +{ + mlt_service_type type = invalid_type; + if ( this != NULL ) + { + mlt_properties properties = mlt_service_properties( this ); + char *mlt_type = mlt_properties_get( properties, "mlt_type" ); + char *resource = mlt_properties_get( properties, "resource" ); + if ( mlt_type == NULL ) + type = unknown_type; + else if ( !strcmp( mlt_type, "producer" ) ) + type = producer_type; + else if ( !strcmp( mlt_type, "mlt_producer" ) ) + { + if ( resource == NULL || !strcmp( resource, "" ) ) + type = producer_type; + else if ( !strcmp( resource, "" ) ) + type = playlist_type; + else if ( !strcmp( resource, "" ) ) + type = tractor_type; + else if ( !strcmp( resource, "" ) ) + type = multitrack_type; + } + else if ( !strcmp( mlt_type, "filter" ) ) + type = filter_type; + else if ( !strcmp( mlt_type, "transition" ) ) + type = transition_type; + else if ( !strcmp( mlt_type, "consumer" ) ) + type = consumer_type; + else + type = unknown_type; + } + return type; +} + /** Connect a producer service. Returns: > 0 warning, == 0 success, < 0 serious error 1 = this service does not accept input @@ -245,17 +295,160 @@ mlt_properties mlt_service_properties( mlt_service self ) return self != NULL ? &self->parent : NULL; } +/** Recursively apply attached filters +*/ + +void mlt_service_apply_filters( mlt_service this, mlt_frame frame, int index ) +{ + int i; + mlt_properties frame_properties = mlt_frame_properties( frame ); + mlt_properties service_properties = mlt_service_properties( this ); + mlt_service_base *base = this->local; + mlt_position position = mlt_frame_get_position( frame ); + mlt_position this_in = mlt_properties_get_position( service_properties, "in" ); + mlt_position this_out = mlt_properties_get_position( service_properties, "out" ); + + if ( index == 0 || mlt_properties_get_int( service_properties, "_filter_private" ) == 0 ) + { + // Process the frame with the attached filters + for ( i = 0; i < base->filter_count; i ++ ) + { + if ( base->filters[ i ] != NULL ) + { + mlt_position in = mlt_filter_get_in( base->filters[ i ] ); + mlt_position out = mlt_filter_get_out( base->filters[ i ] ); + if ( ( in == 0 && out == 0 ) || ( position >= in && ( position <= out || out == 0 ) ) ) + { + mlt_properties_set_position( frame_properties, "in", in == 0 ? this_in : in ); + mlt_properties_set_position( frame_properties, "out", out == 0 ? this_out : out ); + mlt_filter_process( base->filters[ i ], frame ); + mlt_service_apply_filters( mlt_filter_service( base->filters[ i ] ), frame, index + 1 ); + } + } + } + } +} + /** Obtain a frame. */ int mlt_service_get_frame( mlt_service this, mlt_frame_ptr frame, int index ) { - if ( this != NULL ) - return this->get_frame( this, frame, index ); + if ( this != NULL && this->get_frame != NULL ) + { + int result = 0; + mlt_properties properties = mlt_service_properties( this ); + mlt_position in = mlt_properties_get_position( properties, "in" ); + mlt_position out = mlt_properties_get_position( properties, "out" ); + result = this->get_frame( this, frame, index ); + if ( result == 0 ) + { + if ( in >=0 && out > 0 ) + { + properties = mlt_frame_properties( *frame ); + mlt_properties_set_position( properties, "in", in ); + mlt_properties_set_position( properties, "out", out ); + } + mlt_service_apply_filters( this, *frame, 1 ); + } + return result; + } *frame = mlt_frame_init( ); return 0; } +static void mlt_service_filter_changed( mlt_service owner, mlt_service this ) +{ + mlt_events_fire( mlt_service_properties( this ), "service-changed", NULL ); +} + +/** Attach a filter. +*/ + +int mlt_service_attach( mlt_service this, mlt_filter filter ) +{ + int error = this == NULL || filter == NULL; + if ( error == 0 ) + { + int i = 0; + mlt_properties properties = mlt_service_properties( this ); + mlt_service_base *base = this->local; + + for ( i = 0; error == 0 && i < base->filter_count; i ++ ) + if ( base->filters[ i ] == filter ) + error = 1; + + if ( error == 0 ) + { + if ( base->filter_count == base->filter_size ) + { + base->filter_size += 10; + base->filters = realloc( base->filters, base->filter_size * sizeof( mlt_filter ) ); + } + + if ( base->filters != NULL ) + { + mlt_properties props = mlt_filter_properties( filter ); + mlt_properties_inc_ref( mlt_filter_properties( filter ) ); + base->filters[ base->filter_count ++ ] = filter; + mlt_events_fire( properties, "service-changed", NULL ); + mlt_events_listen( props, this, "service-changed", ( mlt_listener )mlt_service_filter_changed ); + mlt_events_listen( props, this, "property-changed", ( mlt_listener )mlt_service_filter_changed ); + } + else + { + error = 2; + } + } + } + return error; +} + +/** Detach a filter. +*/ + +int mlt_service_detach( mlt_service this, mlt_filter filter ) +{ + int error = this == NULL || filter == NULL; + if ( error == 0 ) + { + int i = 0; + mlt_service_base *base = this->local; + mlt_properties properties = mlt_service_properties( this ); + + for ( i = 0; i < base->filter_count; i ++ ) + if ( base->filters[ i ] == filter ) + break; + + if ( i < base->filter_count ) + { + base->filters[ i ] = NULL; + for ( i ++ ; i < base->filter_count; i ++ ) + base->filters[ i - 1 ] = base->filters[ i ]; + base->filter_count --; + mlt_events_disconnect( mlt_filter_properties( filter ), this ); + mlt_filter_close( filter ); + mlt_events_fire( properties, "service-changed", NULL ); + } + } + return error; +} + +/** Retrieve a filter. +*/ + +mlt_filter mlt_service_filter( mlt_service this, int index ) +{ + mlt_filter filter = NULL; + if ( this != NULL ) + { + mlt_service_base *base = this->local; + if ( index >= 0 && index < base->filter_count ) + filter = base->filters[ index ]; + } + return filter; +} + /** Close the service. */ @@ -271,12 +464,17 @@ void mlt_service_close( mlt_service this ) { mlt_service_base *base = this->local; int i = 0; + int count = base->filter_count; + mlt_events_block( mlt_service_properties( this ), this ); + while( count -- ) + mlt_service_detach( this, base->filters[ 0 ] ); + free( base->filters ); for ( i = 0; i < base->count; i ++ ) if ( base->in[ i ] != NULL ) mlt_service_close( base->in[ i ] ); + this->parent.close = NULL; free( base->in ); free( base ); - this->parent.close = NULL; mlt_properties_close( &this->parent ); } }