#include <stdlib.h>
#include <ctype.h>
#include <string.h>
+#include <math.h>
/** Geometry struct.
*/
// Search in for position
struct geometry_s *out = in->next;
+ if ( position >= 1.0 )
+ {
+ int section = floor( position );
+ position -= section;
+ if ( section % 2 == 1 )
+ position = 1.0 - position;
+ }
+
while ( out->next != NULL )
{
if ( position >= in->position && position < out->position )
// Calculate this frames geometry
output->nw = in->nw;
output->nh = in->nh;
- output->x = in->x + ( out->x - in->x ) * position + 0.5;
- output->y = in->y + ( out->y - in->y ) * position + 0.5;
+ output->x = in->x + ( out->x - in->x ) * position;
+ output->y = in->y + ( out->y - in->y ) * position;
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;
output->distort = in->distort;
+
+ output->x = ( int )floor( output->x ) & 0xfffffffe;
+ output->w = ( int )floor( output->w ) & 0xfffffffe;
+ output->sw &= 0xfffffffe;
+}
+
+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 );
+ if ( out > 0 )
+ end->position = ( float )( out - in ) / ( float )( out - in + 1 );
+ else
+ end->position = 1;
+
+ // Assign to properties to ensure we get destroyed
+ mlt_properties_set_data( properties, "geometries", start, 0, transition_destroy_keys, NULL );
+
+ return start;
}
/** Parse the alignment properties into the geometry.
static void alignment_calculate( struct geometry_s *geometry )
{
- geometry->x += ( geometry->w - geometry->sw ) * geometry->halign / 2 + 0.5;
- geometry->y += ( geometry->h - geometry->sh ) * geometry->valign / 2 + 0.5;
+ geometry->x += ( geometry->w - geometry->sw ) * geometry->halign / 2;
+ geometry->y += ( geometry->h - geometry->sh ) * geometry->valign / 2;
}
/** Calculate the position for this frame.
*/
-static inline float position_calculate( mlt_transition this, mlt_frame frame )
+static float position_calculate( mlt_transition this, mlt_frame frame )
{
// Get the in and out position
mlt_position in = mlt_transition_get_in( this );
int stride_dest = width_dest * bpp;
// Adjust to consumer scale
- int x = geometry.x * width_dest / geometry.nw + 0.5;
- int y = geometry.y * height_dest / geometry.nh + 0.5;
+ int x = geometry.x * width_dest / geometry.nw;
+ int y = geometry.y * height_dest / geometry.nh;
+
+ x &= 0xfffffffe;
+ width_src &= 0xfffffffe;
- if ( bpp == 2 )
- x -= x % 2;
-
// optimization points - no work to do
if ( width_src <= 0 || height_src <= 0 )
return ret;
int ret = 0;
mlt_image_format format = mlt_image_yuv422;
- // Initialise the scaled dimensions from the computed
- geometry->sw = geometry->w;
- geometry->sh = geometry->h;
-
- // Compute the dimensioning rectangle
+ // Get the properties objects
mlt_properties b_props = mlt_frame_properties( b_frame );
mlt_properties properties = mlt_transition_properties( this );
int normalised_height = geometry->h;
int real_width = get_value( b_props, "real_width", "width" );
int real_height = get_value( b_props, "real_height", "height" );
+ double input_ar = mlt_frame_get_aspect_ratio( b_frame );
+ double output_ar = mlt_properties_get_double( b_props, "consumer_aspect_ratio" );
int scaled_width = real_width;
int scaled_height = real_height;
+ double output_sar = ( double ) geometry->nw / geometry->nh / output_ar;
+ // If the output is fat pixels (NTSC) then stretch our input horizontally
+ // derived from: output_sar / input_sar * real_width
+ scaled_width = output_sar * real_height * input_ar;
+
// Now ensure that our images fit in the normalised frame
if ( scaled_width > normalised_width )
{
scaled_height = normalised_height;
}
- // Now we need to align to the geometry
- if ( scaled_width <= geometry->w && scaled_height <= geometry->h )
+ // Now apply the fill
+ // TODO: Should combine fill/distort in one property
+ if ( mlt_properties_get( properties, "fill" ) != NULL )
{
- // Save the new scaled dimensions
- geometry->sw = scaled_width;
- geometry->sh = scaled_height;
+ scaled_width = ( geometry->w / scaled_width ) * scaled_width;
+ scaled_height = ( geometry->h / scaled_height ) * scaled_height;
}
+
+ // Save the new scaled dimensions
+ geometry->sw = scaled_width;
+ geometry->sh = scaled_height;
+ }
+ else
+ {
+ geometry->sw = geometry->w;
+ geometry->sh = geometry->h;
}
// We want to ensure that we bypass resize now...
alignment_calculate( geometry );
// Adjust to consumer scale
- int x = geometry->x * *width / geometry->nw + 0.5;
- int y = geometry->y * *height / geometry->nh + 0.5;
+ int x = geometry->x * *width / geometry->nw;
+ int y = geometry->y * *height / geometry->nh;
*width = geometry->sw * *width / geometry->nw;
*height = geometry->sh * *height / geometry->nh;
}
-static uint8_t *transition_get_alpha_mask( mlt_frame this )
+struct geometry_s *composite_calculate( struct geometry_s *result, mlt_transition this, mlt_frame a_frame, float position )
{
- // Obtain properties of frame
- mlt_properties properties = mlt_frame_properties( this );
-
- // Return the alpha mask
- return mlt_properties_get_data( properties, "alpha", NULL );
-}
+ // Get the properties from the transition
+ mlt_properties properties = mlt_transition_properties( this );
-void transition_destroy_keys( void *arg )
-{
- struct geometry_s *ptr = arg;
- struct geometry_s *next = NULL;
+ // Get the properties from the frame
+ mlt_properties a_props = mlt_frame_properties( a_frame );
+
+ // Structures for geometry
+ struct geometry_s *start = mlt_properties_get_data( properties, "geometries", NULL );
- while ( ptr != NULL )
+ // Now parse the geometries
+ if ( start == NULL )
{
- next = ptr->next;
- free( ptr );
- ptr = next;
+ // 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" );
+
+ // Parse the transitions properties
+ start = transition_parse_keys( this, normalised_width, normalised_height );
}
+
+ // Do the calculation
+ 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" ) );
+
+ return start;
}
-static struct geometry_s *transition_parse_keys( mlt_transition this, int normalised_width, int normalised_height )
+mlt_frame composite_copy_region( mlt_transition this, mlt_frame a_frame )
{
- // Loop variable for property interrogation
- int i = 0;
+ // Create a frame to return
+ mlt_frame b_frame = mlt_frame_init( );
- // Get the properties of the transition
- mlt_properties properties = mlt_transition_properties( this );
+ // Get the properties of the a frame
+ mlt_properties a_props = mlt_frame_properties( a_frame );
- // Get the in and out position
- mlt_position in = mlt_transition_get_in( this );
- mlt_position out = mlt_transition_get_out( this );
+ // Get the properties of the b frame
+ mlt_properties b_props = mlt_frame_properties( b_frame );
- // Create the start
- struct geometry_s *start = calloc( 1, sizeof( struct geometry_s ) );
+ // Get the position
+ float position = position_calculate( this, a_frame );
- // Create the end (we always need two entries)
- struct geometry_s *end = calloc( 1, sizeof( struct geometry_s ) );
+ // Destination image
+ uint8_t *dest = NULL;
- // Pointer
- struct geometry_s *ptr = start;
+ // Get the image and dimensions
+ uint8_t *image = mlt_properties_get_data( a_props, "image", NULL );
+ int width = mlt_properties_get_int( a_props, "width" );
+ int height = mlt_properties_get_int( a_props, "height" );
- // Parse the start property
- geometry_parse( start, NULL, mlt_properties_get( properties, "start" ), normalised_width, normalised_height );
+ // Pointers for copy operation
+ uint8_t *p;
+ uint8_t *q;
+ uint8_t *r;
- // 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 );
+ // Corrdinates
+ int w = 0;
+ int h = 0;
+ int x = 0;
+ int y = 0;
- // Check that it's valid
- if ( !strncmp( name, "key[", 4 ) )
- {
- // Get the value of the property
- char *value = mlt_properties_get_value( properties, i );
+ // Will need to know region to copy
+ struct geometry_s result;
- // Determine the frame number
- int frame = atoi( name + 4 );
+ // Calculate the region now
+ composite_calculate( &result, this, a_frame, position );
- // 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 );
+ // Need to scale down to actual dimensions
+ x = result.x * width / result.nw ;
+ y = result.y * height / result.nh;
+ w = result.w * width / result.nw;
+ h = result.h * height / result.nh;
- // 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 ) );
+ x &= 0xfffffffe;
+ w &= 0xfffffffe;
- // Parse and add to the list
- geometry_parse( temp, ptr, value, normalised_width, normalised_height );
+ // Now we need to create a new destination image
+ dest = mlt_pool_alloc( w * h * 2 );
- // Assign the position
- temp->position = position;
+ // Copy the region of the image
+ p = image + y * width * 2 + x * 2;
+ q = dest;
+ r = dest + w * h * 2;
- // Allow the next to be appended after this one
- ptr = temp;
- }
- else
- {
- fprintf( stderr, "Key out of order - skipping %s\n", name );
- }
- }
+ while ( q < r )
+ {
+ memcpy( q, p, w * 2 );
+ q += w * 2;
+ p += width * 2;
}
-
- // 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 );
+ // Assign to the new frame
+ mlt_properties_set_data( b_props, "image", dest, w * h * 2, mlt_pool_release, NULL );
+ mlt_properties_set_int( b_props, "width", w );
+ mlt_properties_set_int( b_props, "height", h );
- return start;
+ // Return the frame
+ return b_frame;
}
/** Get the image.
// Get the b frame from the stack
mlt_frame b_frame = mlt_frame_pop_frame( a_frame );
- // This compositer is yuv422 only
- *format = mlt_image_yuv422;
-
// Get the transition from the a frame
mlt_transition this = mlt_frame_pop_service( a_frame );
+ // This compositer is yuv422 only
+ *format = mlt_image_yuv422;
+
// Get the image from the a frame
mlt_frame_get_image( a_frame, image, format, width, height, 1 );
// Structures for geometry
struct geometry_s result;
- 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 );
- // Now parse the geometries
- 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" );
-
- // Parse the transitions properties
- start = transition_parse_keys( this, normalised_width, normalised_height );
- }
+ // Do the calculation
+ struct geometry_s *start = composite_calculate( &result, this, a_frame, position );
// Since we are the consumer of the b_frame, we must pass along these
// consumer properties from the a_frame
mlt_properties_set_double( b_props, "consumer_aspect_ratio", mlt_properties_get_double( a_props, "consumer_aspect_ratio" ) );
mlt_properties_set_double( b_props, "consumer_scale", mlt_properties_get_double( a_props, "consumer_scale" ) );
- // Do the calculation
- 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;
+ uint8_t *image_b = NULL;
int width_b = *width;
int height_b = *height;
projects / melted / blobdiff