-
/*
* producer_pixbuf.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 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 program is distributed in the hope that it will be useful,
+ * 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 General Public License for more details.
+ * 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 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.
+ * 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 "producer_pixbuf.h"
// Obtain properties of producer
mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
+ // Obtain the cache flag and structure
+ int use_cache = mlt_properties_get_int( producer_props, "cache" );
+ mlt_properties cache = mlt_properties_get_data( producer_props, "_cache", NULL );
+ int update_cache = 0;
+
// Get the time to live for each frame
double ttl = mlt_properties_get_int( producer_props, "ttl" );
// Image index
int image_idx = ( int )floor( ( double )position / ttl ) % this->count;
+ // Key for the cache
+ char image_key[ 10 ];
+ sprintf( image_key, "%d", image_idx );
+
pthread_mutex_lock( &fastmutex );
+ // Check if the frame is already loaded
+ if ( use_cache )
+ {
+ if ( cache == NULL )
+ {
+ cache = mlt_properties_new( );
+ mlt_properties_set_data( producer_props, "_cache", cache, 0, ( mlt_destructor )mlt_properties_close, NULL );
+ }
+
+ mlt_frame cached = mlt_properties_get_data( cache, image_key, NULL );
+
+ if ( cached )
+ {
+ this->image_idx = image_idx;
+ mlt_properties cached_props = MLT_FRAME_PROPERTIES( cached );
+ this->width = mlt_properties_get_int( cached_props, "width" );
+ this->height = mlt_properties_get_int( cached_props, "height" );
+ mlt_properties_set_int( producer_props, "_real_width", mlt_properties_get_int( cached_props, "real_width" ) );
+ mlt_properties_set_int( producer_props, "_real_height", mlt_properties_get_int( cached_props, "real_height" ) );
+ this->image = mlt_properties_get_data( cached_props, "image", NULL );
+ this->alpha = mlt_properties_get_data( cached_props, "alpha", NULL );
+
+ if ( width != 0 && ( width != this->width || height != this->height ) )
+ this->image = NULL;
+ }
+ }
+
// optimization for subsequent iterations on single picture
if ( width != 0 && this->image != NULL && image_idx == this->image_idx )
{
if ( width != this->width || height != this->height )
{
pixbuf = mlt_properties_get_data( producer_props, "_pixbuf", NULL );
- mlt_pool_release( this->image );
- mlt_pool_release( this->alpha );
+ if ( !use_cache )
+ {
+ mlt_pool_release( this->image );
+ mlt_pool_release( this->alpha );
+ }
this->image = NULL;
this->alpha = NULL;
}
}
else if ( pixbuf == NULL && ( this->image == NULL || image_idx != this->image_idx ) )
{
- mlt_pool_release( this->image );
- mlt_pool_release( this->alpha );
+ if ( !use_cache )
+ {
+ mlt_pool_release( this->image );
+ mlt_pool_release( this->alpha );
+ }
this->image = NULL;
this->alpha = NULL;
// Finished with pixbuf now
g_object_unref( pixbuf );
+
+ // Ensure we update the cache when we need to
+ update_cache = use_cache;
}
// Set width/height of frame
mlt_properties_set_data( properties, "image", this->image, this->width * ( this->height + 1 ) * 2, NULL, NULL );
mlt_properties_set_data( properties, "alpha", this->alpha, this->width * this->height, NULL, NULL );
+ if ( update_cache )
+ {
+ mlt_frame cached = mlt_frame_init( );
+ mlt_properties cached_props = MLT_FRAME_PROPERTIES( cached );
+ mlt_properties_set_int( cached_props, "width", this->width );
+ mlt_properties_set_int( cached_props, "height", this->height );
+ mlt_properties_set_int( cached_props, "real_width", mlt_properties_get_int( producer_props, "_real_width" ) );
+ mlt_properties_set_int( cached_props, "real_height", mlt_properties_get_int( producer_props, "_real_height" ) );
+ mlt_properties_set_data( cached_props, "image", this->image, this->width * ( this->height + 1 ) * 2, mlt_pool_release, NULL );
+ mlt_properties_set_data( cached_props, "alpha", this->alpha, this->width * this->height, mlt_pool_release, NULL );
+ mlt_properties_set_data( cache, image_key, cached, 0, ( mlt_destructor )mlt_frame_close, NULL );
+ }
+
pthread_mutex_unlock( &fastmutex );
}
static void producer_close( mlt_producer parent )
{
producer_pixbuf this = parent->child;
- mlt_pool_release( this->image );
- mlt_pool_release( this->alpha );
+ if ( !mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( parent ), "cache" ) )
+ {
+ mlt_pool_release( this->image );
+ mlt_pool_release( this->alpha );
+ }
parent->close = NULL;
mlt_producer_close( parent );
mlt_properties_close( this->filenames );
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