X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_producer.c;h=c07b2b2f8c30c51b026cc738f057719cbd3f7757;hb=80761e7906f1694821044eefb3164b7f07c776e2;hp=991c698767f9328c41dd7dea13226a60dbcb93e3;hpb=0cf7dff156fe3c541eb5d668e317cc73b008c7b0;p=melted diff --git a/src/framework/mlt_producer.c b/src/framework/mlt_producer.c index 991c698..c07b2b2 100644 --- a/src/framework/mlt_producer.c +++ b/src/framework/mlt_producer.c @@ -20,6 +20,7 @@ #include "config.h" #include "mlt_producer.h" +#include "mlt_factory.h" #include "mlt_frame.h" #include #include @@ -36,123 +37,139 @@ 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_timecode( properties, "position", 0.0 ); - mlt_properties_set_double( properties, "frame", 1 ); - mlt_properties_set_double( properties, "fps", 25.0 ); - mlt_properties_set_double( properties, "speed", 1.0 ); - mlt_properties_set_timecode( properties, "in", 0.0 ); - mlt_properties_set_timecode( properties, "out", 36000.0 ); - mlt_properties_set_timecode( properties, "playtime", 36000.0 ); - mlt_properties_set_timecode( properties, "length", 36000.0 ); - mlt_properties_set_int( properties, "known_length", 1 ); - mlt_properties_set_double( properties, "aspect_ratio", 4.0 / 3.0 ); - - // 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 ) + { + // Get the normalisation preference + char *normalisation = mlt_environment( "MLT_NORMALISATION" ); + + // The parent is the service + mlt_service parent = &this->parent; + + // Define the parent close + parent->close = ( mlt_destructor )mlt_producer_close; + parent->close_object = this; + + // For convenience, we'll assume the close_object is this + this->close_object = this; + + // 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 ); + 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 ); + } + 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, "_speed", 1.0 ); + mlt_properties_set_position( properties, "in", 0 ); + mlt_properties_set_position( properties, "out", 14999 ); + mlt_properties_set_position( properties, "length", 15000 ); + 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. +/** Create a new producer. */ -mlt_service mlt_producer_service( mlt_producer this ) +mlt_producer mlt_producer_new( ) { - return &this->parent; + mlt_producer this = malloc( sizeof( struct mlt_producer_s ) ); + mlt_producer_init( this, NULL ); + return this; } -/** Get the producer properties. +/** Get the parent service object. */ -mlt_properties mlt_producer_properties( mlt_producer this ) +mlt_service mlt_producer_service( mlt_producer this ) { - return mlt_service_properties( &this->parent ); + return this != NULL ? &this->parent : NULL; } -/** Seek to a specified time code. +/** Get the producer properties. */ -int mlt_producer_seek( mlt_producer this, mlt_timecode timecode ) +mlt_properties mlt_producer_properties( mlt_producer this ) { - // Check bounds - if ( timecode < 0 ) - timecode = 0; - if ( timecode > mlt_producer_get_playtime( this ) ) - timecode = mlt_producer_get_playtime( this ); - - // Set the position - mlt_properties_set_timecode( mlt_producer_properties( this ), "position", timecode ); - - // Calculate the absolute frame - double frame = ( mlt_producer_get_in( this ) + timecode ) * mlt_producer_get_fps( this ); - mlt_properties_set_double( mlt_producer_properties( this ), "frame", floor( frame + 0.5 ) ); - - return 0; + return mlt_service_properties( &this->parent ); } -/** Seek to a specified absolute frame. +/** Seek to a specified position. */ -int mlt_producer_seek_frame( mlt_producer this, uint64_t frame ) +int mlt_producer_seek( mlt_producer this, mlt_position position ) { - // Calculate the time code - double timecode = ( frame / mlt_producer_get_fps( this ) ) - mlt_producer_get_in( this ); + // 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" ); - // If timecode is invalid, then seek on time - if ( timecode < 0 ) + // Check bounds + if ( position < 0 ) { - // Seek to the in point - mlt_producer_seek( this, 0 ); + position = 0; } - else if ( timecode > mlt_producer_get_playtime( this ) ) + else if ( use_points && !strcmp( eof, "pause" ) && position >= mlt_producer_get_playtime( this ) ) { - // Seek to the out point - mlt_producer_seek( this, mlt_producer_get_playtime( this ) ); + mlt_producer_set_speed( this, 0 ); + position = mlt_producer_get_playtime( this ) - 1; } - else + else if ( use_points && !strcmp( eof, "loop" ) && position >= mlt_producer_get_playtime( this ) ) { - // Set the position - mlt_properties_set_timecode( mlt_producer_properties( this ), "position", timecode ); - - // Set the absolute frame - mlt_properties_set_double( mlt_producer_properties( this ), "frame", frame ); + position = position % mlt_producer_get_playtime( this ); } + // Set the 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 ); + return 0; } -/** Get the current time code. +/** Get the current position (relative to in point). */ -mlt_timecode mlt_producer_position( mlt_producer this ) +mlt_position mlt_producer_position( mlt_producer this ) { - return mlt_properties_get_timecode( mlt_producer_properties( this ), "position" ); + return mlt_properties_get_position( mlt_producer_properties( this ), "_position" ); } -/** Get the current frame. +/** Get the current position (relative to start of producer). */ -uint64_t mlt_producer_frame( 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. @@ -160,7 +177,7 @@ uint64_t 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. @@ -168,7 +185,7 @@ 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. @@ -182,33 +199,30 @@ double mlt_producer_get_fps( mlt_producer this ) /** Set the in and out points. */ -int mlt_producer_set_in_and_out( mlt_producer this, mlt_timecode in, mlt_timecode out ) +int mlt_producer_set_in_and_out( mlt_producer this, mlt_position in, mlt_position out ) { // Correct ins and outs if necessary if ( in < 0 ) in = 0; - if ( in > mlt_producer_get_length( this ) ) + else if ( in > mlt_producer_get_length( this ) ) in = mlt_producer_get_length( this ); + if ( out < 0 ) out = 0; - if ( out > mlt_producer_get_length( this ) ) + else if ( out > mlt_producer_get_length( this ) ) out = mlt_producer_get_length( this ); // Swap ins and outs if wrong if ( out < in ) { - mlt_timecode t = in; + mlt_position t = in; in = out; out = t; } // Set the values - mlt_properties_set_timecode( mlt_producer_properties( this ), "in", in ); - mlt_properties_set_timecode( mlt_producer_properties( this ), "out", out ); - mlt_properties_set_timecode( mlt_producer_properties( this ), "playtime", out - in ); - - // Seek to the in point - mlt_producer_seek( this, 0 ); + mlt_properties_set_position( mlt_producer_properties( this ), "in", in ); + mlt_properties_set_position( mlt_producer_properties( this ), "out", out ); return 0; } @@ -216,33 +230,33 @@ int mlt_producer_set_in_and_out( mlt_producer this, mlt_timecode in, mlt_timecod /** Get the in point. */ -mlt_timecode mlt_producer_get_in( mlt_producer this ) +mlt_position mlt_producer_get_in( mlt_producer this ) { - return mlt_properties_get_timecode( mlt_producer_properties( this ), "in" ); + return mlt_properties_get_position( mlt_producer_properties( this ), "in" ); } /** Get the out point. */ -mlt_timecode mlt_producer_get_out( mlt_producer this ) +mlt_position mlt_producer_get_out( mlt_producer this ) { - return mlt_properties_get_timecode( mlt_producer_properties( this ), "out" ); + return mlt_properties_get_position( mlt_producer_properties( this ), "out" ); } /** Get the total play time. */ -mlt_timecode mlt_producer_get_playtime( mlt_producer this ) +mlt_position mlt_producer_get_playtime( mlt_producer this ) { - return mlt_properties_get_timecode( mlt_producer_properties( this ), "playtime" ); + return mlt_producer_get_out( this ) - mlt_producer_get_in( this ) + 1; } /** Get the total length of the producer. */ -mlt_timecode mlt_producer_get_length( mlt_producer this ) +mlt_position mlt_producer_get_length( mlt_producer this ) { - return mlt_properties_get_timecode( mlt_producer_properties( this ), "length" ); + return mlt_properties_get_position( mlt_producer_properties( this ), "length" ); } /** Prepare for next frame. @@ -250,7 +264,7 @@ mlt_timecode mlt_producer_get_length( mlt_producer this ) void mlt_producer_prepare_next( mlt_producer this ) { - mlt_producer_seek_frame( 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. @@ -261,38 +275,161 @@ 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 + 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 timecode - result = mlt_frame_set_timecode( *frame, mlt_producer_position( this ) ); + // 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 timecode + // Calculate the next position mlt_producer_prepare_next( this ); } + else + { + mlt_properties properties = mlt_producer_properties( this ); + mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL ); + int count = mlt_properties_get_int( properties, "_filter_count" ); + int i; + + // Get the frame from the implementation + result = this->get_frame( this, frame, index ); + + // Process the frame with the attached filters + for ( i = 0; i < count; i ++ ) + if ( filters[ i ] != NULL ) + mlt_filter_process( filters[ i ], *frame ); + } - // Copy the fps of the producer onto the frame + // 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 ) ); return 0; } +/** Attach a filter. +*/ + +int mlt_producer_attach( mlt_producer this, mlt_filter filter ) +{ + int error = this == NULL || filter == NULL; + if ( error == 0 ) + { + int i = 0; + int size = 0; + mlt_properties properties = mlt_producer_properties( this ); + mlt_filter *filters = mlt_properties_get_data( properties, "_filters", &size ); + int count = mlt_properties_get_int( properties, "_filter_count" ); + + for ( i = 0; error == 0 && i < count; i ++ ) + if ( filters[ i ] == filter ) + error = 1; + + if ( error == 0 ) + { + if ( count == size ) + { + size += 10; + filters = realloc( filters, size * sizeof( mlt_filter ) ); + mlt_properties_set_data( properties, "_filters", filters, size, NULL, NULL ); + } + + if ( filters != NULL ) + { + mlt_properties_inc_ref( mlt_filter_properties( filter ) ); + filters[ count ++ ] = filter; + mlt_properties_set_int( properties, "_filter_count", count ); + } + else + { + error = 2; + } + } + } + return error; +} + +/** Detach a filter. +*/ + +int mlt_producer_detach( mlt_producer this, mlt_filter filter ) +{ + int error = this == NULL || filter == NULL; + if ( error == 0 ) + { + int i = 0; + int size = 0; + mlt_properties properties = mlt_producer_properties( this ); + mlt_filter *filters = mlt_properties_get_data( properties, "_filters", &size ); + int count = mlt_properties_get_int( properties, "_filter_count" ); + + for ( i = 0; i < count; i ++ ) + if ( filters[ i ] == filter ) + break; + + if ( i < count ) + { + mlt_filter filter = filters[ i ]; + filters[ i ] = NULL; + for ( i ++ ; i < count; i ++ ) + filters[ i - 1 ] = filters[ i ]; + mlt_properties_set_int( properties, "_filter_count", -- count ); + mlt_filter_close( filter ); + } + } + return error; +} + +/** Retrieve a filter. +*/ + +mlt_filter mlt_producer_filter( mlt_producer this, int index ) +{ + mlt_filter filter = NULL; + if ( this != NULL ) + { + mlt_properties properties = mlt_producer_properties( this ); + mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL ); + int count = mlt_properties_get_int( properties, "_filter_count" ); + if ( index >= 0 && index < count ) + filter = filters[ index ]; + } + return filter; +} + /** Close the producer. */ void mlt_producer_close( mlt_producer this ) { - if ( this->close != NULL ) - this->close( this ); - else - mlt_service_close( &this->parent ); + if ( this != NULL && mlt_properties_dec_ref( mlt_producer_properties( this ) ) <= 0 ) + { + mlt_properties properties = mlt_producer_properties( this ); + mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL ); + int count = mlt_properties_get_int( properties, "_filter_count" ); + + while( count -- ) + mlt_producer_detach( this, filters[ 0 ] ); + + this->parent.close = NULL; + + if ( this->close != NULL ) + this->close( this->close_object ); + else + mlt_service_close( &this->parent ); + } }