--- /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 program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "producer_colour.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( 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 = producer_close;
+
+ // Set the default properties
+ if ( colour == NULL )
+ colour = "0x000000ff";
+ mlt_properties_set( properties, "resource", colour );
+
+ return producer;
+ }
+ free( producer );
+ return NULL;
+}
+
+rgba_color parse_color( char *color )
+{
+ rgba_color result = { 0xff, 0xff, 0xff, 0xff };
+
+ if ( !strncmp( color, "0x", 2 ) )
+ {
+ unsigned int temp = 0;
+ sscanf( color + 2, "%x", &temp );
+ result.r = ( temp >> 24 ) & 0xff;
+ result.g = ( temp >> 16 ) & 0xff;
+ result.b = ( temp >> 8 ) & 0xff;
+ result.a = ( temp ) & 0xff;
+ }
+ else 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" ) )
+ {
+ unsigned int temp = 0;
+ sscanf( color, "%d", &temp );
+ result.r = ( temp >> 24 ) & 0xff;
+ result.g = ( temp >> 16 ) & 0xff;
+ result.b = ( temp >> 8 ) & 0xff;
+ result.a = ( temp ) & 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 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" );
+
+ // See if we need to regenerate
+ if ( *width != current_width || *height != current_height )
+ {
+ fprintf( stderr, "%dx%d\n", *width, *height );
+ // 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 );
+
+ // Color the image
+ rgba_color color = parse_color( mlt_properties_get( producer_props, "resource" ) );
+ uint8_t y, u, v;
+ int i;
+ RGB2YUV( color.r, color.g, color.b, y, u, v );
+ color.r = y;
+ color.g = u;
+ color.b = y;
+ color.a = v;
+ for ( i = 0; i < size; i += 4 )
+ memcpy( &image[ i ], &color, 4 );
+ }
+
+ // Update the frame
+ mlt_properties_set_data( properties, "image", image, size, NULL, NULL );
+ mlt_properties_set_int( properties, "width", *width );
+ mlt_properties_set_int( properties, "height", *height );
+
+ // Clone if necessary
+ if ( writable )
+ {
+ // Clone our image
+ uint8_t *copy = mlt_pool_alloc( size );
+ memcpy( copy, image, size );
+
+ // We're going to pass the copy on
+ image = copy;
+
+ // Now update properties so we free the copy after
+ mlt_properties_set_data( properties, "image", copy, size, mlt_pool_release, NULL );
+ }
+
+ // 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( );
+
+ 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 );
+
+ // 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 / mlt / commitdiff