--- /dev/null
+/*
+ * producer_image.c -- a QT/QImage based producer for MLT
+ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Author: Dan Dennedy <dan@dennedy.org>
+ * Charles Yates <charles.yates@gmail.com>
+ *
+ * NB: This module is designed to be functionally equivalent to the
+ * gtk2 image loading module so it can be used as replacement.
+ *
+ * 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_qimage.h"
+#include "qimage_wrapper.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
+static void producer_close( mlt_producer parent );
+
+mlt_producer producer_qimage_init( char *filename )
+{
+ producer_qimage this = calloc( sizeof( struct producer_qimage_s ), 1 );
+ if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
+ {
+ mlt_producer producer = &this->parent;
+
+ // Get the properties interface
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( &this->parent );
+
+ // Callback registration
+ producer->get_frame = producer_get_frame;
+ producer->close = ( mlt_destructor )producer_close;
+
+ // Set the default properties
+ mlt_properties_set( properties, "resource", filename );
+ mlt_properties_set_int( properties, "ttl", 25 );
+ mlt_properties_set_int( properties, "aspect_ratio", 1 );
+ mlt_properties_set_int( properties, "progressive", 1 );
+
+ return producer;
+ }
+ free( this );
+ return NULL;
+}
+
+static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
+{
+ // Obtain properties of frame
+ mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
+
+ // We need to know the size of the image to clone it
+ int image_size = 0;
+ int alpha_size = 0;
+
+ // Alpha channel
+ uint8_t *alpha = NULL;
+
+ *width = mlt_properties_get_int( properties, "rescale_width" );
+ *height = mlt_properties_get_int( properties, "rescale_height" );
+
+ // Refresh the image
+ refresh_qimage( frame, *width, *height );
+
+ // Get the image
+ *buffer = mlt_properties_get_data( properties, "image", &image_size );
+ alpha = mlt_properties_get_data( properties, "alpha", &alpha_size );
+
+ // Get width and height (may have changed during the refresh)
+ *width = mlt_properties_get_int( properties, "width" );
+ *height = mlt_properties_get_int( properties, "height" );
+
+ // NB: Cloning is necessary with this producer (due to processing of images ahead of use)
+ // The fault is not in the design of mlt, but in the implementation of the qimage producer...
+ if ( *buffer != NULL )
+ {
+ // Clone the image and the alpha
+ uint8_t *image_copy = mlt_pool_alloc( image_size );
+ uint8_t *alpha_copy = mlt_pool_alloc( alpha_size );
+
+ memcpy( image_copy, *buffer, image_size );
+
+ // Copy or default the alpha
+ if ( alpha != NULL )
+ memcpy( alpha_copy, alpha, alpha_size );
+ else
+ memset( alpha_copy, 255, alpha_size );
+
+ // Now update properties so we free the copy after
+ mlt_properties_set_data( properties, "image", image_copy, image_size, mlt_pool_release, NULL );
+ mlt_properties_set_data( properties, "alpha", alpha_copy, alpha_size, mlt_pool_release, NULL );
+
+ // We're going to pass the copy on
+ *buffer = image_copy;
+ }
+ else
+ {
+ // TODO: Review all cases of invalid images
+ *buffer = mlt_pool_alloc( 50 * 50 * 2 );
+ mlt_properties_set_data( properties, "image", *buffer, image_size, mlt_pool_release, NULL );
+ *width = 50;
+ *height = 50;
+ }
+
+ return 0;
+}
+
+static uint8_t *producer_get_alpha_mask( mlt_frame this )
+{
+ // Obtain properties of frame
+ mlt_properties properties = MLT_FRAME_PROPERTIES( this );
+
+ // Return the alpha mask
+ return mlt_properties_get_data( properties, "alpha", NULL );
+}
+
+static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
+{
+ // Get the real structure for this producer
+ producer_qimage this = producer->child;
+
+ // Fetch the producers properties
+ mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( producer );
+
+ if ( this->filenames == NULL && mlt_properties_get( producer_properties, "resource" ) != NULL )
+ {
+ char *filename = mlt_properties_get( producer_properties, "resource" );
+ this->filenames = mlt_properties_new( );
+
+ // Read xml string
+ if ( strstr( filename, "<svg" ) )
+ {
+ // Generate a temporary file for the svg
+ char fullname[ 1024 ] = "/tmp/mlt.XXXXXX";
+ int fd = mkstemp( fullname );
+
+ if ( fd > -1 )
+ {
+ // Write the svg into the temp file
+ ssize_t remaining_bytes;
+ char *xml = filename;
+
+ // Strip leading crap
+ while ( xml[0] != '<' )
+ xml++;
+
+ remaining_bytes = strlen( xml );
+ while ( remaining_bytes > 0 )
+ remaining_bytes -= write( fd, xml + strlen( xml ) - remaining_bytes, remaining_bytes );
+ close( fd );
+
+ mlt_properties_set( this->filenames, "0", fullname );
+
+ // Teehe - when the producer closes, delete the temp file and the space allo
+ mlt_properties_set_data( producer_properties, "__temporary_file__", fullname, 0, ( mlt_destructor )unlink, NULL );
+ }
+ }
+ // Obtain filenames
+ else if ( strchr( filename, '%' ) != NULL )
+ {
+ // handle picture sequences
+ int i = mlt_properties_get_int( producer_properties, "begin" );
+ int gap = 0;
+ char full[1024];
+ int keyvalue = 0;
+ char key[ 50 ];
+
+ while ( gap < 100 )
+ {
+ struct stat buf;
+ snprintf( full, 1023, filename, i ++ );
+ if ( stat( full, &buf ) == 0 )
+ {
+ sprintf( key, "%d", keyvalue ++ );
+ mlt_properties_set( this->filenames, "0", full );
+ gap = 0;
+ }
+ else
+ {
+ gap ++;
+ }
+ }
+ }
+ else if ( strstr( filename, "/.all." ) != NULL )
+ {
+ char wildcard[ 1024 ];
+ char *dir_name = strdup( filename );
+ char *extension = strrchr( dir_name, '.' );
+
+ *( strstr( dir_name, "/.all." ) + 1 ) = '\0';
+ sprintf( wildcard, "*%s", extension );
+
+ mlt_properties_dir_list( this->filenames, dir_name, wildcard, 1 );
+
+ free( dir_name );
+ }
+ else
+ {
+ mlt_properties_set( this->filenames, "0", filename );
+ }
+
+ this->count = mlt_properties_count( this->filenames );
+ }
+
+ // Generate a frame
+ *frame = mlt_frame_init( );
+
+ if ( *frame != NULL && this->count > 0 )
+ {
+ // Obtain properties of frame and producer
+ mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
+
+ // Set the producer on the frame properties
+ mlt_properties_set_data( properties, "producer_qimage", this, 0, NULL, NULL );
+
+ // Update timecode on the frame we're creating
+ mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
+
+ // Ensure that we have a way to obtain the position in the get_image
+ mlt_properties_set_position( properties, "qimage_position", mlt_producer_position( producer ) );
+
+ // Refresh the image
+ refresh_qimage( *frame, 0, 0 );
+
+ // Set producer-specific frame properties
+ mlt_properties_set_int( properties, "progressive", mlt_properties_get_int( producer_properties, "progressive" ) );
+ mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( producer_properties, "aspect_ratio" ) );
+
+ // Set alpha call back
+ ( *frame )->get_alpha_mask = producer_get_alpha_mask;
+
+ // 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 parent )
+{
+ producer_qimage this = parent->child;
+ parent->close = NULL;
+ mlt_producer_close( parent );
+ mlt_properties_close( this->filenames );
+ free( this );
+}
projects / melted / blobdiff