X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fmodules%2Fcore%2Ftransition_composite.c;h=d9c1bf40c3ff5deb62d2229d0ab45ba689426577;hb=d7ae73d25cf5a38a3a8153ae52409fcbef16bb22;hp=c2ba62dd862a08e761f2c8dca7b00622eb219066;hpb=7c518e80321a87a22d2e48835442c9f5b70dcd17;p=melted diff --git a/src/modules/core/transition_composite.c b/src/modules/core/transition_composite.c index c2ba62d..d9c1bf4 100644 --- a/src/modules/core/transition_composite.c +++ b/src/modules/core/transition_composite.c @@ -23,62 +23,691 @@ #include #include +#include +#include +#include -/** Composition class. +/** Geometry struct. */ -typedef struct +struct geometry_s { - struct mlt_transition_s parent; + 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; + 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. +*/ + +static float parse_value( char **ptr, int normalisation, char delim, float defaults ) +{ + float value = defaults; + + if ( *ptr != NULL && **ptr != '\0' ) + { + char *end = NULL; + value = strtod( *ptr, &end ); + if ( end != NULL ) + { + if ( *end == '%' ) + value = ( value / 100.0 ) * normalisation; + while ( *end == delim || *end == '%' ) + end ++; + } + *ptr = end; + } + + return value; } -transition_composite; -/** Get the image. +/** Parse a geometry property string with the syntax X,Y:WxH:MIX. Any value can be + expressed as a percentage by appending a % after the value, otherwise values are + assumed to be relative to the normalised dimensions of the consumer. +*/ + +static void geometry_parse( struct geometry_s *geometry, struct geometry_s *defaults, char *property, int nw, int nh ) +{ + // Assign normalised width and height + geometry->nw = nw; + geometry->nh = nh; + + // Assign from defaults if available + if ( defaults != NULL ) + { + geometry->x = defaults->x; + 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 + { + geometry->mix = 100; + } + + // Parse the geomtry string + 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 ); + } +} + +/** Calculate real geometry. +*/ + +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->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 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. */ -static int transition_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable ) +static float position_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 + 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 ); + if ( value == 0 ) + value = mlt_properties_get_int( properties, fallback ); + return value; +} + +/** Composite function. +*/ + +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; + int32_t weight = ( 1 << 16 ) * ( geometry.mix / 100 ); + int stride_src = width_src * bpp; + int stride_dest = width_dest * bpp; + + // 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 ) + return ret; + + if ( ( x < 0 && -x >= width_src ) || ( y < 0 && -y >= height_src ) ) + return ret; + + // crop overlay off the left edge of frame + if ( x < 0 ) + { + x_src = -x; + width_src -= x_src; + x = 0; + } + + // crop overlay beyond right edge of frame + else if ( x + width_src > width_dest ) + width_src = width_dest - x; + + // crop overlay off the top edge of the frame + if ( y < 0 ) + { + y_src = -y; + height_src -= y_src; + } + // crop overlay below bottom edge of frame + else if ( y + height_src > height_dest ) + height_src = height_dest - y; + + // offset pointer into overlay buffer based on cropping + p_src += x_src * bpp + y_src * stride_src; + + // 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 / 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 a; + 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 += step ) + { + p = p_src; + q = p_dest; + o = q; + z = p_alpha; + + for ( j = 0; j < width_src; j ++ ) + { + a = ( z == NULL ) ? 255 : *z ++; + 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 += alpha_stride; + } + + return ret; +} + + +/** Get the properly sized image from b_frame. +*/ + +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; + + // Get the properties objects + mlt_properties b_props = mlt_frame_properties( b_frame ); + mlt_properties properties = mlt_transition_properties( this ); + + if ( mlt_properties_get( properties, "distort" ) == NULL && geometry->distort == 0 ) + { + // 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 = 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 = scaled_height * normalised_width / scaled_width; + scaled_width = normalised_width; + } + if ( scaled_height > normalised_height ) + { + scaled_width = scaled_width * normalised_height / scaled_height; + scaled_height = normalised_height; + } + + // Now apply the fill + // TODO: Should combine fill/distort in one property + if ( mlt_properties_get( properties, "fill" ) != NULL ) + { + 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... + 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; + + // optimization points - no work to do + if ( *width <= 0 || *height <= 0 ) + return 1; + + if ( ( x < 0 && -x >= *width ) || ( y < 0 && -y >= *height ) ) + return 1; + + 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( this ); + 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. +*/ + +static int transition_get_image( mlt_frame a_frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable ) +{ // Get the b frame from the stack - mlt_frame b_frame = mlt_frame_pop_frame( this ); + 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 image from the a frame + mlt_frame_get_image( a_frame, image, format, width, height, 1 ); if ( b_frame != NULL ) { + // 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 ); - // Arbitrary composite defaults - int x = 0; - int y = 0; - double mix = 1.0; + // Get the properties from the transition + mlt_properties properties = mlt_transition_properties( this ); - // Override from b frame properties if provided - if ( mlt_properties_get( b_props, "x" ) != NULL ) - x = mlt_properties_get_int( b_props, "x" ); - if ( mlt_properties_get( b_props, "y" ) != NULL ) - y = mlt_properties_get_int( b_props, "y" ); - if ( mlt_properties_get( b_props, "mix" ) != NULL ) - mix = mlt_properties_get_double( b_props, "mix" ); + // Structures for geometry + struct geometry_s result; - // Composite the b_frame on the a_frame - mlt_frame_composite_yuv( this, b_frame, x, y, mix ); + // Calculate the position + float position = mlt_properties_get_double( b_props, "relative_position" ); + float delta = delta_calculate( this, a_frame ); - // 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 ); + // Do the calculation + struct geometry_s *start = composite_calculate( &result, this, a_frame, position ); - // Close the b_frame - mlt_frame_close( b_frame ); - } - else if ( a_props != NULL ) - { - // 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 ); + // 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" ) ); + + // Get the image from the b frame + uint8_t *image_b = NULL; + int width_b = *width; + int height_b = *height; + + 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 ); + 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 ); + } + } } return 0; @@ -89,35 +718,25 @@ static int transition_get_image( mlt_frame this, uint8_t **image, mlt_image_form 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_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 ); - - // Propogate the transition properties to the b frame - mlt_properties properties = mlt_transition_properties( this ); - mlt_properties b_props = mlt_frame_properties( b_frame ); - if ( mlt_properties_get( properties, "x" ) != NULL ) - mlt_properties_set_int( b_props, "x", mlt_properties_get_int( properties, "x" ) ); - if ( mlt_properties_get( properties, "y" ) != NULL ) - mlt_properties_set_int( b_props, "y", mlt_properties_get_int( properties, "y" ) ); - if ( mlt_properties_get( properties, "mix" ) != NULL ) - mlt_properties_set_double( b_props, "mix", mlt_properties_get_double( properties, "mix" ) ); - return a_frame; } /** Constructor for the filter. */ -mlt_transition transition_composite_init( void *arg ) +mlt_transition transition_composite_init( char *arg ) { - transition_composite *this = calloc( sizeof( transition_composite ), 1 ); - if ( this != NULL ) + mlt_transition this = calloc( sizeof( struct mlt_transition_s ), 1 ); + if ( this != NULL && mlt_transition_init( this, NULL ) == 0 ) { - mlt_transition transition = &this->parent; - mlt_transition_init( transition, this ); - transition->process = composite_process; - return &this->parent; + this->process = composite_process; + mlt_properties_set( mlt_transition_properties( this ), "start", arg != NULL ? arg : "85%,5%:10%x10%" ); } - return NULL; + return this; }