#include <stdio.h>
#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <math.h>
/** Geometry struct.
*/
struct geometry_s
{
- int nw;
- int nh;
+ float position;
+ float mix;
+ int nw; // normalised width
+ int nh; // normalised height
+ int sw; // scaled width, not including consumer scale based upon w/nw
+ int sh; // scaled height, not including consumer scale based upon h/nh
float x;
float y;
float w;
float h;
- float mix;
+ 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.
{
geometry->x = defaults->x;
geometry->y = defaults->y;
- geometry->w = defaults->w;
- geometry->h = defaults->h;
+ geometry->w = geometry->sw = defaults->w;
+ geometry->h = geometry->sh = defaults->h;
+ geometry->distort = defaults->distort;
geometry->mix = defaults->mix;
+ defaults->next = geometry;
}
else
{
}
// 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 = parse_value( &ptr, nw, 'x', geometry->w );
- geometry->h = parse_value( &ptr, nh, ':', geometry->h );
+ 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 );
}
}
/** 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;
+
+ 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 )
+ 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;
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 int alignment_parse( char* align )
+{
+ int ret = 0;
+
+ if ( align == NULL );
+ else if ( isdigit( align[ 0 ] ) )
+ ret = atoi( align );
+ else if ( align[ 0 ] == 'c' || align[ 0 ] == 'm' )
+ ret = 1;
+ else if ( align[ 0 ] == 'r' || align[ 0 ] == 'b' )
+ ret = 2;
+
+ return ret;
+}
+
+/** Adjust position according to scaled size and alignment properties.
+*/
+
+static void alignment_calculate( struct geometry_s *geometry )
+{
+ geometry->x += ( geometry->w - geometry->sw ) * geometry->halign / 2;
+ geometry->y += ( geometry->h - geometry->sh ) * geometry->valign / 2;
}
/** Calculate the position for this frame.
mlt_position in = mlt_transition_get_in( this );
mlt_position out = mlt_transition_get_out( this );
- // Get the position of the frame
+ // Get the position
mlt_position position = mlt_frame_get_position( frame );
// Now do the calcs
return ( float )( position - in ) / ( float )( out - in + 1 );
}
+/** Calculate the field delta for this frame - position between two frames.
+*/
+
+static inline float delta_calculate( mlt_transition this, mlt_frame 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 position of the frame
+ mlt_position position = mlt_frame_get_position( frame );
+
+ // Now do the calcs
+ float x = ( float )( position - in ) / ( float )( out - in + 1 );
+ float y = ( float )( position + 1 - in ) / ( float )( out - in + 1 );
+
+ return ( y - x ) / 2.0;
+}
+
static int get_value( mlt_properties properties, char *preferred, char *fallback )
{
int value = mlt_properties_get_int( properties, preferred );
/** Composite function.
*/
-static int composite_yuv( uint8_t *p_dest, int width_dest, int height_dest, uint8_t *p_src, int width_src, int height_src, uint8_t *p_alpha, struct geometry_s geometry )
+static int composite_yuv( uint8_t *p_dest, int width_dest, int height_dest, int bpp, uint8_t *p_src, int width_src, int height_src, uint8_t *p_alpha, struct geometry_s geometry, int field )
{
int ret = 0;
int i, j;
int x_src = 0, y_src = 0;
- float weight = geometry.mix / 100;
- int x = ( geometry.x * width_dest ) / geometry.nw;
- int y = ( geometry.y * height_dest ) / geometry.nh;
- int stride_src = width_src * 2;
- int stride_dest = width_dest * 2;
+ int32_t weight = ( 1 << 16 ) * ( geometry.mix / 100 );
+ int stride_src = width_src * bpp;
+ int stride_dest = width_dest * bpp;
- x -= x % 2;
+ // Adjust to consumer scale
+ int x = geometry.x * width_dest / geometry.nw;
+ int y = geometry.y * height_dest / geometry.nh;
+
+ x &= 0xfffffffe;
+ width_src &= 0xfffffffe;
// optimization points - no work to do
if ( width_src <= 0 || height_src <= 0 )
height_src = height_dest - y;
// offset pointer into overlay buffer based on cropping
- p_src += x_src * 2 + y_src * stride_src;
+ p_src += x_src * bpp + y_src * stride_src;
- // offset pointer into frame buffer based upon positive, even coordinates only!
- p_dest += ( x < 0 ? 0 : x ) * 2 + ( y < 0 ? 0 : y ) * stride_dest;
+ // offset pointer into frame buffer based upon positive coordinates only!
+ p_dest += ( x < 0 ? 0 : x ) * bpp + ( y < 0 ? 0 : y ) * stride_dest;
// offset pointer into alpha channel based upon cropping
if ( p_alpha )
- p_alpha += x_src + y_src * stride_src / 2;
+ p_alpha += x_src + y_src * stride_src / bpp;
+
+ // Assuming lower field first
+ // Special care is taken to make sure the b_frame is aligned to the correct field.
+ // field 0 = lower field and y should be odd (y is 0-based).
+ // field 1 = upper field and y should be even.
+ if ( ( field > -1 ) && ( y % 2 == field ) )
+ {
+ //fprintf( stderr, "field %d y %d\n", field, y );
+ if ( ( field == 1 && y < height_dest - 1 ) || ( field == 0 && y == 0 ) )
+ p_dest += stride_dest;
+ else
+ p_dest -= stride_dest;
+ }
+
+ // On the second field, use the other lines from b_frame
+ if ( field == 1 )
+ {
+ p_src += stride_src;
+ if ( p_alpha )
+ p_alpha += stride_src / bpp;
+ height_src--;
+ }
uint8_t *p = p_src;
uint8_t *q = p_dest;
uint8_t *o = p_dest;
uint8_t *z = p_alpha;
- uint8_t Y;
- uint8_t UV;
uint8_t a;
- float value;
+ int32_t value;
+ int step = ( field > -1 ) ? 2 : 1;
+
+ stride_src = stride_src * step;
+ int alpha_stride = stride_src / bpp;
+ stride_dest = stride_dest * step;
// now do the compositing only to cropped extents
- for ( i = 0; i < height_src; i++ )
+ for ( i = 0; i < height_src; i += step )
{
p = p_src;
q = p_dest;
- o = p_dest;
+ o = q;
z = p_alpha;
for ( j = 0; j < width_src; j ++ )
{
- Y = *p ++;
- UV = *p ++;
a = ( z == NULL ) ? 255 : *z ++;
- value = ( weight * ( float ) a / 255.0 );
- *o ++ = (uint8_t)( Y * value + *q++ * ( 1 - value ) );
- *o ++ = (uint8_t)( UV * value + *q++ * ( 1 - value ) );
+ value = ( weight * ( a + 1 ) ) >> 8;
+ *o ++ = ( *p++ * value + *q++ * ( ( 1 << 16 ) - value ) ) >> 16;
+ *o ++ = ( *p++ * value + *q++ * ( ( 1 << 16 ) - value ) ) >> 16;
}
p_src += stride_src;
p_dest += stride_dest;
if ( p_alpha )
- p_alpha += stride_src / 2;
+ p_alpha += alpha_stride;
}
return ret;
/** Get the properly sized image from b_frame.
*/
-static int get_b_frame_image( mlt_frame b_frame, uint8_t **image, int *width, int *height, struct geometry_s *geometry )
+static int get_b_frame_image( mlt_transition this, mlt_frame b_frame, uint8_t **image, int *width, int *height, struct geometry_s *geometry )
{
int ret = 0;
mlt_image_format format = mlt_image_yuv422;
- // Compute the dimensioning rectangle
+ // Get the properties objects
mlt_properties b_props = mlt_frame_properties( b_frame );
- mlt_transition this = mlt_properties_get_data( b_props, "transition_composite", NULL );
mlt_properties properties = mlt_transition_properties( this );
- if ( mlt_properties_get( properties, "distort" ) == NULL )
+ if ( mlt_properties_get( properties, "distort" ) == NULL && geometry->distort == 0 )
{
- // Now do additional calcs based on real_width/height etc
- //int normalised_width = mlt_properties_get_int( b_props, "normalised_width" );
- //int normalised_height = mlt_properties_get_int( b_props, "normalised_height" );
+ // Adjust b_frame pixel aspect
int normalised_width = geometry->w;
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 = ( input_ar > output_ar ? input_ar / output_ar : output_ar / input_ar ) * real_width;
- int scaled_height = ( input_ar > output_ar ? input_ar / output_ar : output_ar / input_ar ) * real_height;
+ 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;
}
- // Special case
- if ( scaled_height == normalised_height )
- scaled_width = normalised_width;
-
- // 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 )
{
- // TODO: Should take into account requested alignment here...
- // Assume centred alignment for now
-
- geometry->x = geometry->x + ( geometry->w - scaled_width ) / 2;
- geometry->y = geometry->y + ( geometry->h - scaled_height ) / 2;
- geometry->w = scaled_width;
- geometry->h = scaled_height;
- mlt_properties_set( b_props, "distort", "true" );
- }
- else
- {
- mlt_properties_set( b_props, "distort", "true" );
+ 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
{
- // We want to ensure that we bypass resize now...
- mlt_properties_set( b_props, "distort", "true" );
+ geometry->sw = geometry->w;
+ geometry->sh = geometry->h;
}
- int x = ( geometry->x * *width ) / geometry->nw;
- int y = ( geometry->y * *height ) / geometry->nh;
- *width = ( geometry->w * *width ) / geometry->nw;
- *height = ( geometry->h * *height ) / geometry->nh;
+ // We want to ensure that we bypass resize now...
+ mlt_properties_set( b_props, "distort", "true" );
+
+ // Take into consideration alignment for optimisation
+ alignment_calculate( geometry );
+
+ // Adjust to consumer scale
+ 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;
x -= x % 2;
if ( ( x < 0 && -x >= *width ) || ( y < 0 && -y >= *height ) )
return 1;
- ret = mlt_frame_get_image( b_frame, image, &format, width, height, 1 /* writable */ );
+ ret = mlt_frame_get_image( b_frame, image, &format, width, height, 1 );
return ret;
}
+struct geometry_s *composite_calculate( struct geometry_s *result, mlt_transition this, mlt_frame a_frame, float position )
+{
+ // Get the properties from the transition
+ mlt_properties properties = mlt_transition_properties( this );
+
+ // 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 );
+
+ // 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
+ 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;
+}
+
+mlt_frame composite_copy_region( mlt_transition this, mlt_frame a_frame )
+{
+ // Create a frame to return
+ mlt_frame b_frame = mlt_frame_init( );
+
+ // Get the properties of the a frame
+ mlt_properties a_props = mlt_frame_properties( a_frame );
+
+ // Get the properties of the b frame
+ mlt_properties b_props = mlt_frame_properties( b_frame );
+
+ // Get the position
+ float position = position_calculate( this, a_frame );
+
+ // Destination image
+ uint8_t *dest = NULL;
+
+ // 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" );
+
+ // Pointers for copy operation
+ uint8_t *p;
+ uint8_t *q;
+ uint8_t *r;
+
+ // Corrdinates
+ int w = 0;
+ int h = 0;
+ int x = 0;
+ int y = 0;
+
+ // Will need to know region to copy
+ struct geometry_s result;
+
+ // Calculate the region now
+ composite_calculate( &result, this, a_frame, position );
+
+ // 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;
+
+ x &= 0xfffffffe;
+ w &= 0xfffffffe;
+
+ // Now we need to create a new destination image
+ dest = mlt_pool_alloc( w * h * 2 );
+
+ // Copy the region of the image
+ p = image + y * width * 2 + x * 2;
+ q = dest;
+ r = dest + w * h * 2;
+
+ while ( q < r )
+ {
+ memcpy( q, p, w * 2 );
+ q += w * 2;
+ p += width * 2;
+ }
+
+ // 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 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 );
+ // 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 properties of the b frame
mlt_properties b_props = mlt_frame_properties( b_frame );
- // Get the transition from the b frame
- mlt_transition this = mlt_properties_get_data( b_props, "transition_composite", NULL );
-
// Get the properties from the transition
mlt_properties properties = mlt_transition_properties( this );
// Structures for geometry
struct geometry_s result;
- struct geometry_s start;
- struct geometry_s end;
// Calculate the position
- float position = position_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 );
+ float position = mlt_properties_get_double( b_props, "relative_position" );
+ float delta = delta_calculate( this, a_frame );
// Do the calculation
- geometry_calculate( &result, &start, &end, position );
+ 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_scale", mlt_properties_get_double( a_props, "consumer_scale" ) );
// Get the image from the b frame
- uint8_t *image_b;
+ uint8_t *image_b = NULL;
int width_b = *width;
int height_b = *height;
- if ( get_b_frame_image( b_frame, &image_b, &width_b, &height_b, &result ) == 0 )
+
+ if ( get_b_frame_image( this, b_frame, &image_b, &width_b, &height_b, &result ) == 0 )
{
+ uint8_t *dest = *image;
+ uint8_t *src = image_b;
+ int bpp = 2;
uint8_t *alpha = mlt_frame_get_alpha_mask( b_frame );
-
- // Composite the b_frame on the a_frame
- composite_yuv( *image, *width, *height, image_b, width_b, height_b, alpha, result );
+ int progressive = mlt_properties_get_int( a_props, "progressive" ) ||
+ mlt_properties_get_int( a_props, "consumer_progressive" ) ||
+ mlt_properties_get_int( properties, "progressive" );
+ int field;
+
+ for ( field = 0; field < ( progressive ? 1 : 2 ); field++ )
+ {
+ // Assume lower field (0) first
+ float field_position = position + field * delta;
+
+ // Do the calculation if we need to
+ geometry_calculate( &result, start, field_position );
+
+ // Align
+ alignment_calculate( &result );
+
+ // Composite the b_frame on the a_frame
+ composite_yuv( dest, *width, *height, bpp, src, width_b, height_b, alpha, result, progressive ? -1 : field );
+ }
}
}
static mlt_frame composite_process( mlt_transition this, mlt_frame a_frame, mlt_frame b_frame )
{
// Propogate the transition properties to the b frame
- mlt_properties b_props = mlt_frame_properties( b_frame );
- mlt_properties_set_data( b_props, "transition_composite", this, 0, NULL, NULL );
+ mlt_properties_set_double( mlt_frame_properties( b_frame ), "relative_position", position_calculate( this, a_frame ) );
+ mlt_frame_push_service( a_frame, this );
mlt_frame_push_get_image( a_frame, transition_get_image );
mlt_frame_push_frame( a_frame, b_frame );
return a_frame;
{
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;
}
projects / melted / blobdiff