From 2cee5c4008cbbd4a12b2b85db3adc06717f22f67 Mon Sep 17 00:00:00 2001 From: lilo_booter Date: Wed, 25 Feb 2004 15:01:58 +0000 Subject: [PATCH] composite key frames git-svn-id: https://mlt.svn.sourceforge.net/svnroot/mlt/trunk/mlt@169 d19143bc-622f-0410-bfdd-b5b2a6649095 --- src/modules/core/transition_composite.c | 162 ++++++++++++++++++++++++++----- 1 files changed, 138 insertions(+), 24 deletions(-) diff --git a/src/modules/core/transition_composite.c b/src/modules/core/transition_composite.c index e8f1235..4bd3d41 100644 --- a/src/modules/core/transition_composite.c +++ b/src/modules/core/transition_composite.c @@ -31,6 +31,7 @@ struct geometry_s { + float position; float mix; int nw; // normalised width int nh; // normalised height @@ -42,6 +43,8 @@ struct geometry_s float h; int halign; // horizontal alignment: 0=left, 1=center, 2=right int valign; // vertical alignment: 0=top, 1=middle, 2=bottom + int distort; + struct geometry_s *next; }; /** Parse a value from a geometry string. @@ -75,8 +78,6 @@ static float parse_value( char **ptr, int normalisation, char delim, float defau static void geometry_parse( struct geometry_s *geometry, struct geometry_s *defaults, char *property, int nw, int nh ) { - memset( geometry, 0, sizeof( struct geometry_s ) ); - // Assign normalised width and height geometry->nw = nw; geometry->nh = nh; @@ -88,7 +89,9 @@ static void geometry_parse( struct geometry_s *geometry, struct geometry_s *defa geometry->y = defaults->y; geometry->w = geometry->sw = defaults->w; geometry->h = geometry->sh = defaults->h; + geometry->distort = defaults->distort; geometry->mix = defaults->mix; + defaults->next = geometry; } else { @@ -96,13 +99,20 @@ static void geometry_parse( struct geometry_s *geometry, struct geometry_s *defa } // Parse the geomtry string - if ( property != NULL ) + if ( property != NULL && strcmp( property, "" ) ) { char *ptr = property; geometry->x = parse_value( &ptr, nw, ',', geometry->x ); geometry->y = parse_value( &ptr, nh, ':', geometry->y ); geometry->w = geometry->sw = parse_value( &ptr, nw, 'x', geometry->w ); geometry->h = geometry->sh = parse_value( &ptr, nh, ':', geometry->h ); + if ( *ptr == '!' ) + { + geometry->distort = 1; + ptr ++; + if ( *ptr == ':' ) + ptr ++; + } geometry->mix = parse_value( &ptr, 100, ' ', geometry->mix ); } } @@ -110,8 +120,22 @@ static void geometry_parse( struct geometry_s *geometry, struct geometry_s *defa /** Calculate real geometry. */ -static void geometry_calculate( struct geometry_s *output, struct geometry_s *in, struct geometry_s *out, float position ) +static void geometry_calculate( struct geometry_s *output, struct geometry_s *in, float position ) { + // Search in for position + struct geometry_s *out = in->next; + + while ( out->next != NULL ) + { + if ( position >= in->position && position < out->position ) + break; + + in = out; + out = in->next; + } + + position = ( position - in->position ) / ( out->position - in->position ); + // Calculate this frames geometry output->nw = in->nw; output->nh = in->nh; @@ -120,8 +144,7 @@ static void geometry_calculate( struct geometry_s *output, struct geometry_s *in output->w = in->w + ( out->w - in->w ) * position; output->h = in->h + ( out->h - in->h ) * position; output->mix = in->mix + ( out->mix - in->mix ) * position; - if ( output->mix > 100 ) - fprintf( stderr, "%f = %f + ( %f - %f ) * %f\n", output->mix, in->mix, out->mix, in->mix, position ); + output->distort = in->distort; } /** Parse the alignment properties into the geometry. @@ -203,8 +226,6 @@ static int composite_yuv( uint8_t *p_dest, int width_dest, int height_dest, int int i, j; int x_src = 0, y_src = 0; int32_t weight = ( 1 << 16 ) * ( geometry.mix / 100 ); - if ( geometry.mix > 100 ) - fprintf( stderr, "%f %d\n", geometry.mix, weight ); int stride_src = width_src * bpp; int stride_dest = width_dest * bpp; @@ -331,7 +352,7 @@ static int get_b_frame_image( mlt_transition this, mlt_frame b_frame, uint8_t ** mlt_properties b_props = mlt_frame_properties( b_frame ); mlt_properties properties = mlt_transition_properties( this ); - if ( mlt_properties_get( properties, "distort" ) == NULL ) + if ( mlt_properties_get( properties, "distort" ) == NULL && geometry->distort == 0 ) { // Adjust b_frame pixel aspect int normalised_width = geometry->w; @@ -398,6 +419,98 @@ static uint8_t *transition_get_alpha_mask( mlt_frame this ) return mlt_properties_get_data( properties, "alpha", NULL ); } +void transition_destroy_keys( void *arg ) +{ + struct geometry_s *ptr = arg; + struct geometry_s *next = NULL; + + while ( ptr != NULL ) + { + next = ptr->next; + free( ptr ); + ptr = next; + } +} + +static struct geometry_s *transition_parse_keys( mlt_transition this, int normalised_width, int normalised_height ) +{ + // Loop variable for property interrogation + int i = 0; + + // Get the properties of the transition + mlt_properties properties = mlt_transition_properties( this ); + + // Get the in and out position + mlt_position in = mlt_transition_get_in( this ); + mlt_position out = mlt_transition_get_out( this ); + + // Create the start + struct geometry_s *start = calloc( 1, sizeof( struct geometry_s ) ); + + // Create the end (we always need two entries) + struct geometry_s *end = calloc( 1, sizeof( struct geometry_s ) ); + + // Pointer + struct geometry_s *ptr = start; + + // Parse the start property + geometry_parse( start, NULL, mlt_properties_get( properties, "start" ), normalised_width, normalised_height ); + + // Parse the keys in between + for ( i = 0; i < mlt_properties_count( properties ); i ++ ) + { + // Get the name of the property + char *name = mlt_properties_get_name( properties, i ); + + // Check that it's valid + if ( !strncmp( name, "key[", 4 ) ) + { + // Get the value of the property + char *value = mlt_properties_get_value( properties, i ); + + // Determine the frame number + int frame = atoi( name + 4 ); + + // Determine the position + float position = 0; + + if ( frame >= 0 && frame < ( out - in ) ) + position = ( float )frame / ( float )( out - in + 1 ); + else if ( frame < 0 && - frame < ( out - in ) ) + position = ( float )( out - in + frame ) / ( float )( out - in + 1 ); + + // For now, we'll exclude all keys received out of order + if ( position > ptr->position ) + { + // Create a new geometry + struct geometry_s *temp = calloc( 1, sizeof( struct geometry_s ) ); + + // Parse and add to the list + geometry_parse( temp, ptr, value, normalised_width, normalised_height ); + + // Assign the position + temp->position = position; + + // Allow the next to be appended after this one + ptr = temp; + } + else + { + fprintf( stderr, "Key out of order - skipping %s\n", name ); + } + } + } + + // Parse the end + geometry_parse( end, ptr, mlt_properties_get( properties, "end" ), normalised_width, normalised_height ); + end->position = ( float )( out - in ) / ( float )( out - in + 1 ); + + // Assign to properties to ensure we get destroyed + mlt_properties_set_data( properties, "geometries", start, 0, transition_destroy_keys, NULL ); + + return start; +} + /** Get the image. */ @@ -428,24 +541,22 @@ static int transition_get_image( mlt_frame a_frame, uint8_t **image, mlt_image_f // Structures for geometry struct geometry_s result; - struct geometry_s start; - struct geometry_s end; + struct geometry_s *start = mlt_properties_get_data( properties, "geometries", NULL ); // Calculate the position float position = mlt_properties_get_double( b_props, "relative_position" ); float delta = delta_calculate( this, a_frame ); - // Obtain the normalised width and height from the a_frame - int normalised_width = mlt_properties_get_int( a_props, "normalised_width" ); - int normalised_height = mlt_properties_get_int( a_props, "normalised_height" ); - // Now parse the geometries - geometry_parse( &start, NULL, mlt_properties_get( properties, "start" ), normalised_width, normalised_height ); - geometry_parse( &end, &start, mlt_properties_get( properties, "end" ), normalised_width, normalised_height ); + if ( start == NULL ) + { + // Obtain the normalised width and height from the a_frame + int normalised_width = mlt_properties_get_int( a_props, "normalised_width" ); + int normalised_height = mlt_properties_get_int( a_props, "normalised_height" ); - // Now parse the alignment - result.halign = alignment_parse( mlt_properties_get( properties, "halign" ) ); - result.valign = alignment_parse( mlt_properties_get( properties, "valign" ) ); + // Parse the transitions properties + start = transition_parse_keys( this, normalised_width, normalised_height ); + } // Since we are the consumer of the b_frame, we must pass along these // consumer properties from the a_frame @@ -453,7 +564,11 @@ static int transition_get_image( mlt_frame a_frame, uint8_t **image, mlt_image_f mlt_properties_set_double( b_props, "consumer_scale", mlt_properties_get_double( a_props, "consumer_scale" ) ); // Do the calculation - geometry_calculate( &result, &start, &end, position ); + geometry_calculate( &result, start, position ); + + // Now parse the alignment + result.halign = alignment_parse( mlt_properties_get( properties, "halign" ) ); + result.valign = alignment_parse( mlt_properties_get( properties, "valign" ) ); // Get the image from the b frame uint8_t *image_b; @@ -476,8 +591,8 @@ static int transition_get_image( mlt_frame a_frame, uint8_t **image, mlt_image_f // Assume lower field (0) first float field_position = position + field * delta; - // Do the calculation - geometry_calculate( &result, &start, &end, field_position ); + // Do the calculation if we need to + geometry_calculate( &result, start, field_position ); // Align alignment_calculate( &result ); @@ -514,7 +629,6 @@ mlt_transition transition_composite_init( char *arg ) { this->process = composite_process; mlt_properties_set( mlt_transition_properties( this ), "start", arg != NULL ? arg : "85%,5%:10%x10%" ); - mlt_properties_set( mlt_transition_properties( this ), "end", "" ); } return this; } -- 1.7.4.4