+++ /dev/null
-/*
- * producer_colour.c -- raster image loader based upon gdk-pixbuf
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Dan Dennedy <dan@dennedy.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <framework/mlt_producer.h>
-#include <framework/mlt_frame.h>
-#include <framework/mlt_pool.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-
-typedef struct
-{
- uint8_t r, g, b, a;
-} rgba_color;
-
-static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
-static void producer_close( mlt_producer parent );
-
-mlt_producer producer_colour_init( mlt_profile profile, mlt_service_type type, const char *id, char *colour )
-{
- mlt_producer producer = calloc( 1, sizeof( struct mlt_producer_s ) );
- if ( producer != NULL && mlt_producer_init( producer, NULL ) == 0 )
- {
- // Get the properties interface
- mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
-
- // Callback registration
- producer->get_frame = producer_get_frame;
- producer->close = ( mlt_destructor )producer_close;
-
- // Set the default properties
- mlt_properties_set( properties, "resource", colour == NULL ? "0x000000ff" : colour );
- mlt_properties_set( properties, "_resource", "" );
- mlt_properties_set_double( properties, "aspect_ratio", 0 );
-
- return producer;
- }
- free( producer );
- return NULL;
-}
-
-rgba_color parse_color( char *color, unsigned int color_int )
-{
- rgba_color result = { 0xff, 0xff, 0xff, 0xff };
-
- if ( !strcmp( color, "red" ) )
- {
- result.r = 0xff;
- result.g = 0x00;
- result.b = 0x00;
- }
- else if ( !strcmp( color, "green" ) )
- {
- result.r = 0x00;
- result.g = 0xff;
- result.b = 0x00;
- }
- else if ( !strcmp( color, "blue" ) )
- {
- result.r = 0x00;
- result.g = 0x00;
- result.b = 0xff;
- }
- else if ( strcmp( color, "white" ) )
- {
- result.r = ( color_int >> 24 ) & 0xff;
- result.g = ( color_int >> 16 ) & 0xff;
- result.b = ( color_int >> 8 ) & 0xff;
- result.a = ( color_int ) & 0xff;
- }
-
- return result;
-}
-
-static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
-{
- // May need to know the size of the image to clone it
- int size = 0;
-
- // Obtain properties of frame
- mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
-
- // Obtain the producer for this frame
- mlt_producer producer = mlt_properties_get_data( properties, "producer_colour", NULL );
-
- // Obtain properties of producer
- mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
-
- // Get the current and previous colour strings
- char *now = mlt_properties_get( producer_props, "resource" );
- char *then = mlt_properties_get( producer_props, "_resource" );
-
- // Get the current image and dimensions cached in the producer
- uint8_t *image = mlt_properties_get_data( producer_props, "image", &size );
- int current_width = mlt_properties_get_int( producer_props, "_width" );
- int current_height = mlt_properties_get_int( producer_props, "_height" );
-
- // Parse the colour
- if ( now && strchr( now, '/' ) )
- {
- now = strrchr( now, '/' ) + 1;
- mlt_properties_set( producer_props, "resource", now );
- }
- rgba_color color = parse_color( now, mlt_properties_get_int( producer_props, "resource" ) );
-
- // See if we need to regenerate
- if ( strcmp( now, then ) || *width != current_width || *height != current_height )
- {
- // Color the image
- uint8_t y, u, v;
- int i = *height;
- int j = 0;
- int uneven = *width % 2;
- int count = ( *width - uneven ) / 2;
- uint8_t *p = NULL;
-
- // Allocate the image
- size = *width * *height * 2;
- image = mlt_pool_alloc( size );
-
- // Update the producer
- mlt_properties_set_data( producer_props, "image", image, size, mlt_pool_release, NULL );
- mlt_properties_set_int( producer_props, "_width", *width );
- mlt_properties_set_int( producer_props, "_height", *height );
- mlt_properties_set( producer_props, "_resource", now );
-
- RGB2YUV( color.r, color.g, color.b, y, u, v );
-
- p = image;
-
- while ( i -- )
- {
- j = count;
- while ( j -- )
- {
- *p ++ = y;
- *p ++ = u;
- *p ++ = y;
- *p ++ = v;
- }
- if ( uneven )
- {
- *p ++ = y;
- *p ++ = u;
- }
- }
- }
-
- // Update the frame
- mlt_properties_set_int( properties, "width", *width );
- mlt_properties_set_int( properties, "height", *height );
-
- // Clone if necessary (deemed always necessary)
- if ( 1 )
- {
- // Create the alpha channel
- uint8_t *alpha = mlt_pool_alloc( size >> 1 );
-
- // Clone our image
- uint8_t *copy = mlt_pool_alloc( size );
- memcpy( copy, image, size );
-
- // We're going to pass the copy on
- image = copy;
-
- // Initialise the alpha
- if ( alpha )
- memset( alpha, color.a, size >> 1 );
-
- // Now update properties so we free the copy after
- mlt_properties_set_data( properties, "image", copy, size, mlt_pool_release, NULL );
- mlt_properties_set_data( properties, "alpha", alpha, size >> 1, mlt_pool_release, NULL );
- mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( producer_props, "aspect_ratio" ) );
- }
-
- // Pass on the image
- *buffer = image;
- *format = mlt_image_yuv422;
-
- return 0;
-}
-
-static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
-{
- // Generate a frame
- *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
-
- if ( *frame != NULL )
- {
- // Obtain properties of frame and producer
- mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
-
- // Obtain properties of producer
- mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
-
- // Set the producer on the frame properties
- mlt_properties_set_data( properties, "producer_colour", producer, 0, NULL, NULL );
-
- // Update timecode on the frame we're creating
- mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
-
- // Set producer-specific frame properties
- mlt_properties_set_int( properties, "progressive", 1 );
- mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( producer_props, "aspect_ratio" ) );
-
- // colour is an alias for resource
- if ( mlt_properties_get( producer_props, "colour" ) != NULL )
- mlt_properties_set( producer_props, "resource", mlt_properties_get( producer_props, "colour" ) );
-
- // Push the get_image method
- mlt_frame_push_get_image( *frame, producer_get_image );
- }
-
- // Calculate the next timecode
- mlt_producer_prepare_next( producer );
-
- return 0;
-}
-
-static void producer_close( mlt_producer producer )
-{
- producer->close = NULL;
- mlt_producer_close( producer );
- free( producer );
-}
projects / melted / blobdiff