--- /dev/null
+/*
+ * transition_luma.c -- a generic dissolve/wipe processor
+ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Author: Dan Dennedy <dan@dennedy.org>
+ *
+ * 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 program 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.
+ *
+ * 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.
+ */
+
+#include "transition_luma.h"
+#include <framework/mlt_frame.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+/** Luma class.
+*/
+
+typedef struct
+{
+ struct mlt_transition_s parent;
+ char *filename;
+ int width;
+ int height;
+ double *bitmap;
+}
+transition_luma;
+
+
+// forward declarations
+static void transition_close( mlt_transition parent );
+
+
+// image processing functions
+
+static inline double smoothstep( double edge1, double edge2, double a )
+{
+ if ( a < edge1 )
+ return 0.0;
+
+ if ( a >= edge2 )
+ return 1.0;
+
+ a = ( a - edge1 ) / ( edge2 - edge1 );
+
+ return ( a * a * ( 3 - 2 * a ) );
+}
+
+/** powerful stuff
+
+ \param field_order -1 = progressive, 0 = lower field first, 1 = top field first
+*/
+static void luma_composite( mlt_frame this, mlt_frame b_frame, int luma_width, int luma_height,
+ double *luma_bitmap, double pos, double frame_delta, double softness, int field_order )
+{
+ int width_src, height_src;
+ int width_dest, height_dest;
+ mlt_image_format format_src, format_dest;
+ uint8_t *p_src, *p_dest;
+ int i, j;
+ int stride_src;
+ int stride_dest;
+ double weight = 0;
+ int field;
+
+ format_src = mlt_image_yuv422;
+ format_dest = mlt_image_yuv422;
+
+ mlt_frame_get_image( this, &p_dest, &format_dest, &width_dest, &height_dest, 1 /* writable */ );
+ mlt_frame_get_image( b_frame, &p_src, &format_src, &width_src, &height_src, 0 /* writable */ );
+
+ stride_src = width_src * 2;
+ stride_dest = width_dest * 2;
+
+ // composite using luma map
+ for ( field = 0; field < ( field_order < 0 ? 1 : 2 ); ++field )
+ {
+ // Offset the position based on which field we're looking at ...
+ double field_pos = pos + ( ( field_order == 0 ? 1 - field : field) * frame_delta * 0.5 );
+
+ // adjust the position for the softness level
+ field_pos *= ( 1.0 + softness );
+
+ for ( i = field; i < height_src; i += ( field_order < 0 ? 1 : 2 ) )
+ {
+ uint8_t *p = &p_src[ i * stride_src ];
+ uint8_t *q = &p_dest[ i * stride_dest ];
+ uint8_t *o = &p_dest[ i * stride_dest ];
+ double *l = &luma_bitmap[ i * luma_width ];
+
+ for ( j = 0; j < width_src; j ++ )
+ {
+ uint8_t y = *p ++;
+ uint8_t uv = *p ++;
+ weight = *l ++;
+ double value = smoothstep( weight, weight + softness, field_pos );
+
+ *o ++ = (uint8_t)( y * value + *q++ * ( 1 - value ) );
+ *o ++ = (uint8_t)( uv * value + *q++ * ( 1 - value ) );
+ }
+ }
+ }
+}
+
+/** Get the image.
+*/
+
+static int transition_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
+{
+ // Get the properties of the a frame
+ mlt_properties a_props = mlt_frame_properties( this );
+
+ // Get the b frame from the stack
+ mlt_frame b_frame = mlt_frame_pop_frame( this );
+
+ // Get the properties of the b frame
+ mlt_properties b_props = mlt_frame_properties( b_frame );
+
+ // Arbitrary composite defaults
+ static double previous_mix = 0;
+ double mix = 0;
+ int luma_width = 0;
+ int luma_height = 0;
+ double *luma_bitmap = NULL;
+ double luma_softness = 0;
+ int progressive = 0;
+ int top_field_first = 0;
+
+ // mix is the offset time value in the duration of the transition
+ // - also used as the mixing level for a dissolve
+ if ( mlt_properties_get( b_props, "mix" ) != NULL )
+ mix = mlt_properties_get_double( b_props, "mix" );
+
+ // (mix - previous_mix) is the animation delta, if backwards reset previous
+ if ( mix < previous_mix )
+ previous_mix = 0;
+
+ // Get the interlace and field properties of the frame
+ if ( mlt_properties_get( b_props, "progressive" ) != NULL )
+ progressive = mlt_properties_get_int( b_props, "progressive" );
+ if ( mlt_properties_get( b_props, "top_field_first" ) != NULL )
+ top_field_first = mlt_properties_get_int( b_props, "top_field_first" );
+
+ // Get the luma map parameters
+ if ( mlt_properties_get( b_props, "luma.width" ) != NULL )
+ luma_width = mlt_properties_get_int( b_props, "luma.width" );
+ if ( mlt_properties_get( b_props, "luma.height" ) != NULL )
+ luma_height = mlt_properties_get_int( b_props, "luma.height" );
+ if ( mlt_properties_get( b_props, "luma.softness" ) != NULL )
+ luma_softness = mlt_properties_get_double( b_props, "luma.softness" );
+ luma_bitmap = (double*) mlt_properties_get_data( b_props, "luma.bitmap", NULL );
+
+ if ( luma_width > 0 && luma_height > 0 && luma_bitmap != NULL )
+ // Composite the frames using a luma map
+ luma_composite( this, b_frame, luma_width, luma_height, luma_bitmap, mix, mix - previous_mix,
+ luma_softness, progressive > 0 ? -1 : top_field_first );
+ else
+ // Dissolve the frames using the time offset for mix value
+ mlt_frame_composite_yuv( this, b_frame, 0, 0, mix );
+
+ // Extract the a_frame image info
+ *width = mlt_properties_get_int( a_props, "width" );
+ *height = mlt_properties_get_int( a_props, "height" );
+ *image = mlt_properties_get_data( a_props, "image", NULL );
+
+ // Close the b_frame
+ mlt_frame_close( b_frame );
+
+ previous_mix = mix;
+
+ return 0;
+}
+
+
+/** Load the luma map from PGM stream.
+*/
+
+static void luma_read_pgm( FILE *f, double **map, int *width, int *height )
+{
+ uint8_t *data = NULL;
+ while (1)
+ {
+ char line[128];
+ int i = 2;
+ int maxval;
+ int bpp;
+ double *p;
+
+ line[127] = '\0';
+
+ // get the magic code
+ if ( fgets( line, 127, f ) == NULL )
+ break;
+ if ( line[0] != 'P' || line[1] != '5' )
+ break;
+
+ // skip white space and see if a new line must be fetched
+ for ( i = 2; i < 127 && line[i] != '\0' && isspace( line[i] ); i++ );
+ if ( line[i] == '\0' && fgets( line, 127, f ) == NULL )
+ break;
+
+ // get the dimensions
+ if ( line[0] == 'P' )
+ i = sscanf( line, "P5 %d %d %d", width, height, &maxval );
+ else
+ i = sscanf( line, "%d %d %d", width, height, &maxval );
+
+ // get the height value, if not yet
+ if ( i < 2 )
+ {
+ if ( fgets( line, 127, f ) == NULL )
+ break;
+ i = sscanf( line, "%d", height );
+ if ( i == 0 )
+ break;
+ else
+ i = 2;
+ }
+
+ // get the maximum gray value, if not yet
+ if ( i < 3 )
+ {
+ if ( fgets( line, 127, f ) == NULL )
+ break;
+ i = sscanf( line, "%d", &maxval );
+ if ( i == 0 )
+ break;
+ }
+
+ // determine if this is one or two bytes per pixel
+ bpp = maxval > 255 ? 2 : 1;
+ // allocate temporary storage for the raw data
+ data = malloc( *width * *height * bpp );
+ if ( data == NULL )
+ break;
+
+ // read the raw data
+ if ( fread( data, *width * *height * bpp, 1, f ) != 1 )
+ break;
+
+ // allocate the luma bitmap
+ *map = p = (double*) malloc( *width * *height * sizeof( double ) );
+ if ( *map == NULL )
+ break;
+
+ // proces the raw data into the luma bitmap
+ for ( i = 0; i < *width * *height * bpp; i += bpp )
+ {
+ if ( bpp == 1 )
+ *p++ = (double) data[ i ] / (double) maxval;
+ else
+ *p++ = (double) ( ( data[ i ] << 8 ) + data[ i+1 ] ) / (double) maxval;
+ }
+
+ break;
+ }
+
+ if ( data != NULL )
+ free( data );
+}
+
+
+/** Luma transition processing.
+*/
+
+static mlt_frame transition_process( mlt_transition transition, mlt_frame a_frame, mlt_frame b_frame )
+{
+ transition_luma *this = (transition_luma*) transition->child;
+
+ // Get the properties of the transition
+ mlt_properties properties = mlt_transition_properties( transition );
+
+ // Get the properties of the b frame
+ mlt_properties b_props = mlt_frame_properties( b_frame );
+
+ // If the filename property changed, reload the map
+ char *luma_file = mlt_properties_get( properties, "filename" );
+ if ( luma_file != NULL && luma_file != this->filename )
+ {
+ int width = mlt_properties_get_int( b_props, "width" );
+ int height = mlt_properties_get_int( b_props, "height" );
+ char command[ 512 ];
+ char *ext = strrchr( luma_file, '.' );
+ FILE *pipe;
+
+ command[ 511 ] = '\0';
+ this->filename = luma_file;
+ snprintf( command, 511, "anytopnm %s | pnmscale -width %d -height %d", luma_file, width, height );
+ pipe = popen( command, "r" );
+ if ( pipe != NULL )
+ {
+ luma_read_pgm( pipe, &this->bitmap, &this->width, &this->height );
+ pclose( pipe );
+ }
+
+ }
+
+ // Determine the time position of this frame in the transition duration
+ mlt_timecode in = mlt_transition_get_in( transition );
+ mlt_timecode out = mlt_transition_get_out( transition );
+ mlt_timecode time = mlt_frame_get_timecode( b_frame );
+ double pos = ( time - in ) / ( out - in );
+
+ // Set the b frame properties
+ mlt_properties_set_double( b_props, "mix", pos );
+ mlt_properties_set_int( b_props, "luma.width", this->width );
+ mlt_properties_set_int( b_props, "luma.height", this->height );
+ mlt_properties_set_data( b_props, "luma.bitmap", this->bitmap, 0, NULL, NULL );
+ if ( mlt_properties_get( properties, "softness" ) != NULL )
+ mlt_properties_set_double( b_props, "luma.softness", mlt_properties_get_double( properties, "softness" ) );
+
+ mlt_frame_push_get_image( a_frame, transition_get_image );
+ mlt_frame_push_frame( a_frame, b_frame );
+ return a_frame;
+}
+
+/** Constructor for the filter.
+*/
+
+mlt_transition transition_luma_init( char *lumafile )
+{
+ transition_luma *this = calloc( sizeof( transition_luma ), 1 );
+ if ( this != NULL )
+ {
+ mlt_transition transition = &this->parent;
+ mlt_transition_init( transition, this );
+ transition->process = transition_process;
+ transition->close = transition_close;
+
+ if ( lumafile != NULL )
+ mlt_properties_set( mlt_transition_properties( transition ), "filename", lumafile );
+
+ return &this->parent;
+ }
+ return NULL;
+}
+
+/** Close the transition.
+*/
+
+static void transition_close( mlt_transition parent )
+{
+ transition_luma *this = (transition_luma*) parent->child;
+
+ if ( this->bitmap )
+ free( this->bitmap );
+
+ parent->close = NULL;
+ mlt_transition_close( parent );
+ free( this );
+}
+
--- /dev/null
+/*
+ * transition_luma.h -- a generic dissolve/wipe processor
+ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Author: Dan Dennedy <dan@dennedy.org>
+ *
+ * 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 program 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.
+ *
+ * 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.
+ */
+
+#ifndef _TRANSITION_LUMA_H_
+#define _TRANSITION_LUMA_H_
+
+#include <framework/mlt_transition.h>
+
+extern mlt_transition transition_luma_init( char *lumafile );
+
+#endif
--- /dev/null
+/*
+ * transition_luma.c -- a generic dissolve/wipe processor
+ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Author: Dan Dennedy <dan@dennedy.org>
+ *
+ * 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 program 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.
+ *
+ * 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.
+ */
+
+#include "transition_luma.h"
+#include <framework/mlt_frame.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+/** Luma class.
+*/
+
+typedef struct
+{
+ struct mlt_transition_s parent;
+ char *filename;
+ int width;
+ int height;
+ double *bitmap;
+}
+transition_luma;
+
+
+// forward declarations
+static void transition_close( mlt_transition parent );
+
+
+// image processing functions
+
+static inline double smoothstep( double edge1, double edge2, double a )
+{
+ if ( a < edge1 )
+ return 0.0;
+
+ if ( a >= edge2 )
+ return 1.0;
+
+ a = ( a - edge1 ) / ( edge2 - edge1 );
+
+ return ( a * a * ( 3 - 2 * a ) );
+}
+
+/** powerful stuff
+
+ \param field_order -1 = progressive, 0 = lower field first, 1 = top field first
+*/
+static void luma_composite( mlt_frame this, mlt_frame b_frame, int luma_width, int luma_height,
+ double *luma_bitmap, double pos, double frame_delta, double softness, int field_order )
+{
+ int width_src, height_src;
+ int width_dest, height_dest;
+ mlt_image_format format_src, format_dest;
+ uint8_t *p_src, *p_dest;
+ int i, j;
+ int stride_src;
+ int stride_dest;
+ double weight = 0;
+ int field;
+
+ format_src = mlt_image_yuv422;
+ format_dest = mlt_image_yuv422;
+
+ mlt_frame_get_image( this, &p_dest, &format_dest, &width_dest, &height_dest, 1 /* writable */ );
+ mlt_frame_get_image( b_frame, &p_src, &format_src, &width_src, &height_src, 0 /* writable */ );
+
+ stride_src = width_src * 2;
+ stride_dest = width_dest * 2;
+
+ // composite using luma map
+ for ( field = 0; field < ( field_order < 0 ? 1 : 2 ); ++field )
+ {
+ // Offset the position based on which field we're looking at ...
+ double field_pos = pos + ( ( field_order == 0 ? 1 - field : field) * frame_delta * 0.5 );
+
+ // adjust the position for the softness level
+ field_pos *= ( 1.0 + softness );
+
+ for ( i = field; i < height_src; i += ( field_order < 0 ? 1 : 2 ) )
+ {
+ uint8_t *p = &p_src[ i * stride_src ];
+ uint8_t *q = &p_dest[ i * stride_dest ];
+ uint8_t *o = &p_dest[ i * stride_dest ];
+ double *l = &luma_bitmap[ i * luma_width ];
+
+ for ( j = 0; j < width_src; j ++ )
+ {
+ uint8_t y = *p ++;
+ uint8_t uv = *p ++;
+ weight = *l ++;
+ double value = smoothstep( weight, weight + softness, field_pos );
+
+ *o ++ = (uint8_t)( y * value + *q++ * ( 1 - value ) );
+ *o ++ = (uint8_t)( uv * value + *q++ * ( 1 - value ) );
+ }
+ }
+ }
+}
+
+/** Get the image.
+*/
+
+static int transition_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
+{
+ // Get the properties of the a frame
+ mlt_properties a_props = mlt_frame_properties( this );
+
+ // Get the b frame from the stack
+ mlt_frame b_frame = mlt_frame_pop_frame( this );
+
+ // Get the properties of the b frame
+ mlt_properties b_props = mlt_frame_properties( b_frame );
+
+ // Arbitrary composite defaults
+ static double previous_mix = 0;
+ double mix = 0;
+ int luma_width = 0;
+ int luma_height = 0;
+ double *luma_bitmap = NULL;
+ double luma_softness = 0;
+ int progressive = 0;
+ int top_field_first = 0;
+
+ // mix is the offset time value in the duration of the transition
+ // - also used as the mixing level for a dissolve
+ if ( mlt_properties_get( b_props, "mix" ) != NULL )
+ mix = mlt_properties_get_double( b_props, "mix" );
+
+ // (mix - previous_mix) is the animation delta, if backwards reset previous
+ if ( mix < previous_mix )
+ previous_mix = 0;
+
+ // Get the interlace and field properties of the frame
+ if ( mlt_properties_get( b_props, "progressive" ) != NULL )
+ progressive = mlt_properties_get_int( b_props, "progressive" );
+ if ( mlt_properties_get( b_props, "top_field_first" ) != NULL )
+ top_field_first = mlt_properties_get_int( b_props, "top_field_first" );
+
+ // Get the luma map parameters
+ if ( mlt_properties_get( b_props, "luma.width" ) != NULL )
+ luma_width = mlt_properties_get_int( b_props, "luma.width" );
+ if ( mlt_properties_get( b_props, "luma.height" ) != NULL )
+ luma_height = mlt_properties_get_int( b_props, "luma.height" );
+ if ( mlt_properties_get( b_props, "luma.softness" ) != NULL )
+ luma_softness = mlt_properties_get_double( b_props, "luma.softness" );
+ luma_bitmap = (double*) mlt_properties_get_data( b_props, "luma.bitmap", NULL );
+
+ if ( luma_width > 0 && luma_height > 0 && luma_bitmap != NULL )
+ // Composite the frames using a luma map
+ luma_composite( this, b_frame, luma_width, luma_height, luma_bitmap, mix, mix - previous_mix,
+ luma_softness, progressive > 0 ? -1 : top_field_first );
+ else
+ // Dissolve the frames using the time offset for mix value
+ mlt_frame_composite_yuv( this, b_frame, 0, 0, mix );
+
+ // Extract the a_frame image info
+ *width = mlt_properties_get_int( a_props, "width" );
+ *height = mlt_properties_get_int( a_props, "height" );
+ *image = mlt_properties_get_data( a_props, "image", NULL );
+
+ // Close the b_frame
+ mlt_frame_close( b_frame );
+
+ previous_mix = mix;
+
+ return 0;
+}
+
+
+/** Load the luma map from PGM stream.
+*/
+
+static void luma_read_pgm( FILE *f, double **map, int *width, int *height )
+{
+ uint8_t *data = NULL;
+ while (1)
+ {
+ char line[128];
+ int i = 2;
+ int maxval;
+ int bpp;
+ double *p;
+
+ line[127] = '\0';
+
+ // get the magic code
+ if ( fgets( line, 127, f ) == NULL )
+ break;
+ if ( line[0] != 'P' || line[1] != '5' )
+ break;
+
+ // skip white space and see if a new line must be fetched
+ for ( i = 2; i < 127 && line[i] != '\0' && isspace( line[i] ); i++ );
+ if ( line[i] == '\0' && fgets( line, 127, f ) == NULL )
+ break;
+
+ // get the dimensions
+ if ( line[0] == 'P' )
+ i = sscanf( line, "P5 %d %d %d", width, height, &maxval );
+ else
+ i = sscanf( line, "%d %d %d", width, height, &maxval );
+
+ // get the height value, if not yet
+ if ( i < 2 )
+ {
+ if ( fgets( line, 127, f ) == NULL )
+ break;
+ i = sscanf( line, "%d", height );
+ if ( i == 0 )
+ break;
+ else
+ i = 2;
+ }
+
+ // get the maximum gray value, if not yet
+ if ( i < 3 )
+ {
+ if ( fgets( line, 127, f ) == NULL )
+ break;
+ i = sscanf( line, "%d", &maxval );
+ if ( i == 0 )
+ break;
+ }
+
+ // determine if this is one or two bytes per pixel
+ bpp = maxval > 255 ? 2 : 1;
+ // allocate temporary storage for the raw data
+ data = malloc( *width * *height * bpp );
+ if ( data == NULL )
+ break;
+
+ // read the raw data
+ if ( fread( data, *width * *height * bpp, 1, f ) != 1 )
+ break;
+
+ // allocate the luma bitmap
+ *map = p = (double*) malloc( *width * *height * sizeof( double ) );
+ if ( *map == NULL )
+ break;
+
+ // proces the raw data into the luma bitmap
+ for ( i = 0; i < *width * *height * bpp; i += bpp )
+ {
+ if ( bpp == 1 )
+ *p++ = (double) data[ i ] / (double) maxval;
+ else
+ *p++ = (double) ( ( data[ i ] << 8 ) + data[ i+1 ] ) / (double) maxval;
+ }
+
+ break;
+ }
+
+ if ( data != NULL )
+ free( data );
+}
+
+
+/** Luma transition processing.
+*/
+
+static mlt_frame transition_process( mlt_transition transition, mlt_frame a_frame, mlt_frame b_frame )
+{
+ transition_luma *this = (transition_luma*) transition->child;
+
+ // Get the properties of the transition
+ mlt_properties properties = mlt_transition_properties( transition );
+
+ // Get the properties of the b frame
+ mlt_properties b_props = mlt_frame_properties( b_frame );
+
+ // If the filename property changed, reload the map
+ char *luma_file = mlt_properties_get( properties, "filename" );
+ if ( luma_file != NULL && luma_file != this->filename )
+ {
+ int width = mlt_properties_get_int( b_props, "width" );
+ int height = mlt_properties_get_int( b_props, "height" );
+ char command[ 512 ];
+ char *ext = strrchr( luma_file, '.' );
+ FILE *pipe;
+
+ command[ 511 ] = '\0';
+ this->filename = luma_file;
+ snprintf( command, 511, "anytopnm %s | pnmscale -width %d -height %d", luma_file, width, height );
+ pipe = popen( command, "r" );
+ if ( pipe != NULL )
+ {
+ luma_read_pgm( pipe, &this->bitmap, &this->width, &this->height );
+ pclose( pipe );
+ }
+
+ }
+
+ // Determine the time position of this frame in the transition duration
+ mlt_timecode in = mlt_transition_get_in( transition );
+ mlt_timecode out = mlt_transition_get_out( transition );
+ mlt_timecode time = mlt_frame_get_timecode( b_frame );
+ double pos = ( time - in ) / ( out - in );
+
+ // Set the b frame properties
+ mlt_properties_set_double( b_props, "mix", pos );
+ mlt_properties_set_int( b_props, "luma.width", this->width );
+ mlt_properties_set_int( b_props, "luma.height", this->height );
+ mlt_properties_set_data( b_props, "luma.bitmap", this->bitmap, 0, NULL, NULL );
+ if ( mlt_properties_get( properties, "softness" ) != NULL )
+ mlt_properties_set_double( b_props, "luma.softness", mlt_properties_get_double( properties, "softness" ) );
+
+ mlt_frame_push_get_image( a_frame, transition_get_image );
+ mlt_frame_push_frame( a_frame, b_frame );
+ return a_frame;
+}
+
+/** Constructor for the filter.
+*/
+
+mlt_transition transition_luma_init( char *lumafile )
+{
+ transition_luma *this = calloc( sizeof( transition_luma ), 1 );
+ if ( this != NULL )
+ {
+ mlt_transition transition = &this->parent;
+ mlt_transition_init( transition, this );
+ transition->process = transition_process;
+ transition->close = transition_close;
+
+ if ( lumafile != NULL )
+ mlt_properties_set( mlt_transition_properties( transition ), "filename", lumafile );
+
+ return &this->parent;
+ }
+ return NULL;
+}
+
+/** Close the transition.
+*/
+
+static void transition_close( mlt_transition parent )
+{
+ transition_luma *this = (transition_luma*) parent->child;
+
+ if ( this->bitmap )
+ free( this->bitmap );
+
+ parent->close = NULL;
+ mlt_transition_close( parent );
+ free( this );
+}
+
--- /dev/null
+/*
+ * transition_luma.h -- a generic dissolve/wipe processor
+ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Author: Dan Dennedy <dan@dennedy.org>
+ *
+ * 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 program 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.
+ *
+ * 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.
+ */
+
+#ifndef _TRANSITION_LUMA_H_
+#define _TRANSITION_LUMA_H_
+
+#include <framework/mlt_transition.h>
+
+extern mlt_transition transition_luma_init( char *lumafile );
+
+#endif
projects / mlt / commitdiff