+++ /dev/null
-/*
- * producer_pixbuf.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_cache.h>
-#include <gdk-pixbuf/gdk-pixbuf.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <math.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <dirent.h>
-
-static pthread_mutex_t g_mutex = PTHREAD_MUTEX_INITIALIZER;
-
-typedef struct producer_pixbuf_s *producer_pixbuf;
-
-struct producer_pixbuf_s
-{
- struct mlt_producer_s parent;
-
- // File name list
- mlt_properties filenames;
- int count;
- int image_idx;
-
- int width;
- int height;
- uint8_t *image;
- uint8_t *alpha;
- mlt_cache_item image_cache;
- mlt_cache_item alpha_cache;
- pthread_mutex_t mutex;
-};
-
-static void load_filenames( producer_pixbuf this, mlt_properties producer_properties );
-static void refresh_image( producer_pixbuf this, mlt_frame frame, int width, int height );
-static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
-static void producer_close( mlt_producer parent );
-
-mlt_producer producer_pixbuf_init( char *filename )
-{
- producer_pixbuf this = calloc( sizeof( struct producer_pixbuf_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 );
-
- // Validate the resource
- if ( filename )
- load_filenames( this, properties );
- if ( this->count )
- {
- mlt_frame frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
- if ( frame )
- {
- mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
- pthread_mutex_init( &this->mutex, NULL );
- mlt_properties_set_data( frame_properties, "producer_pixbuf", this, 0, NULL, NULL );
- mlt_frame_set_position( frame, mlt_producer_position( producer ) );
- mlt_properties_set_position( frame_properties, "pixbuf_position", mlt_producer_position( producer ) );
- refresh_image( this, frame, 0, 0 );
- mlt_frame_close( frame );
- }
- }
- if ( this->width == 0 )
- {
- producer_close( producer );
- producer = NULL;
- }
- return producer;
- }
- free( this );
- return NULL;
-}
-
-static void load_filenames( producer_pixbuf this, mlt_properties producer_properties )
-{
- 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, key, 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 );
-}
-
-static void refresh_image( producer_pixbuf this, mlt_frame frame, int width, int height )
-{
- // Obtain properties of frame
- mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
-
- // Obtain the producer
- mlt_producer producer = &this->parent;
-
- // 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;
-
- // restore GdkPixbuf
- pthread_mutex_lock( &this->mutex );
- mlt_cache_item pixbuf_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.pixbuf" );
- GdkPixbuf *pixbuf = mlt_cache_item_data( pixbuf_cache, NULL );
- GError *error = NULL;
-
- // restore scaled image
- this->image_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.image" );
- this->image = mlt_cache_item_data( this->image_cache, NULL );
-
- // restore alpha channel
- this->alpha_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.alpha" );
- this->alpha = mlt_cache_item_data( this->alpha_cache, NULL );
-
- // Check if user wants us to reload the image
- if ( mlt_properties_get_int( producer_props, "force_reload" ) )
- {
- pixbuf = NULL;
- this->image = NULL;
- mlt_properties_set_int( producer_props, "force_reload", 0 );
- }
-
- // Get the time to live for each frame
- double ttl = mlt_properties_get_int( producer_props, "ttl" );
-
- // Get the original position of this frame
- mlt_position position = mlt_properties_get_position( properties, "pixbuf_position" );
- position += mlt_producer_get_in( producer );
-
- // 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( &g_mutex );
-
- // 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 && ( image_idx != this->image_idx || width != this->width || height != this->height ) )
- this->image = NULL;
- if ( image_idx != this->image_idx )
- pixbuf = NULL;
- if ( pixbuf == NULL && ( width == 0 || this->image == NULL ) )
- {
- this->image = NULL;
- this->image_idx = image_idx;
- pixbuf = gdk_pixbuf_new_from_file( mlt_properties_get_value( this->filenames, image_idx ), &error );
-
- if ( pixbuf )
- {
- // Register this pixbuf for destruction and reuse
- mlt_cache_item_close( pixbuf_cache );
- mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "pixbuf.pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref );
- pixbuf_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.pixbuf" );
-
- mlt_events_block( producer_props, NULL );
- mlt_properties_set_int( producer_props, "_real_width", gdk_pixbuf_get_width( pixbuf ) );
- mlt_properties_set_int( producer_props, "_real_height", gdk_pixbuf_get_height( pixbuf ) );
- mlt_events_unblock( producer_props, NULL );
-
- // Store the width/height of the pixbuf temporarily
- this->width = gdk_pixbuf_get_width( pixbuf );
- this->height = gdk_pixbuf_get_height( pixbuf );
- }
- }
-
- // If we have a pixbuf and we need an image
- if ( pixbuf && width > 0 && this->image == NULL )
- {
- char *interps = mlt_properties_get( properties, "rescale.interp" );
- int interp = GDK_INTERP_BILINEAR;
-
- if ( strcmp( interps, "nearest" ) == 0 )
- interp = GDK_INTERP_NEAREST;
- else if ( strcmp( interps, "tiles" ) == 0 )
- interp = GDK_INTERP_TILES;
- else if ( strcmp( interps, "hyper" ) == 0 )
- interp = GDK_INTERP_HYPER;
-
- // Note - the original pixbuf is already safe and ready for destruction
- pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
-
- // Store width and height
- this->width = width;
- this->height = height;
-
- // Allocate/define image
- this->image = mlt_pool_alloc( width * ( height + 1 ) * 2 );
- if ( !use_cache )
- mlt_cache_item_close( this->image_cache );
- mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "pixbuf.image", this->image, width * ( height + 1 ) * 2, mlt_pool_release );
- this->image_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.image" );
-
- // Extract YUV422 and alpha
- if ( gdk_pixbuf_get_has_alpha( pixbuf ) )
- {
- // Allocate the alpha mask
- this->alpha = mlt_pool_alloc( this->width * this->height );
- if ( !use_cache )
- mlt_cache_item_close( this->alpha_cache );
- mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "pixbuf.alpha", this->alpha, width * height, mlt_pool_release );
- this->alpha_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.alpha" );
-
- // Convert the image
- mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
- this->width, this->height,
- gdk_pixbuf_get_rowstride( pixbuf ),
- this->image, this->alpha );
- }
- else
- {
- // No alpha to extract
- mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
- this->width, this->height,
- gdk_pixbuf_get_rowstride( pixbuf ),
- this->image );
- }
-
- // Finished with pixbuf now
- g_object_unref( pixbuf );
-
- // Ensure we update the cache when we need to
- update_cache = use_cache;
- }
-
- // release references no longer needed
- mlt_cache_item_close( pixbuf_cache );
- if ( width == 0 )
- {
- pthread_mutex_unlock( &this->mutex );
- mlt_cache_item_close( this->image_cache );
- mlt_cache_item_close( this->alpha_cache );
- }
-
- // Set width/height of frame
- mlt_properties_set_int( properties, "width", this->width );
- mlt_properties_set_int( properties, "height", this->height );
- mlt_properties_set_int( properties, "real_width", mlt_properties_get_int( producer_props, "_real_width" ) );
- mlt_properties_set_int( properties, "real_height", mlt_properties_get_int( producer_props, "_real_height" ) );
-
- if ( update_cache )
- {
- mlt_frame cached = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
- 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( &g_mutex );
-}
-
-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 );
-
- // Obtain the producer for this frame
- producer_pixbuf this = mlt_properties_get_data( properties, "producer_pixbuf", NULL );
-
- *width = mlt_properties_get_int( properties, "rescale_width" );
- *height = mlt_properties_get_int( properties, "rescale_height" );
-
- // Refresh the image
- refresh_image( this, frame, *width, *height );
-
- // Get the image size
- int image_size = this->width * ( this->height + 1 ) * 2;
- int alpha_size = this->width * this->height;
-
- // 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 pixbuf producer...
- if ( this->image )
- {
- if ( *format == mlt_image_yuv422 || *format == mlt_image_yuv420p )
- {
- // 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, this->image, image_size );
-
- // Copy or default the alpha
- if ( this->alpha != NULL )
- memcpy( alpha_copy, this->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 if ( *format == mlt_image_rgb24a )
- {
- // Clone the image and the alpha
- image_size = *width * ( *height + 1 ) * 4;
- alpha_size = *width * ( *height + 1 );
- uint8_t *image_copy = mlt_pool_alloc( image_size );
- uint8_t *alpha_copy = mlt_pool_alloc( alpha_size );
-
- mlt_convert_yuv422_to_rgb24a( this->image, image_copy, (*width)*(*height) );
-
- // 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;
- }
-
- // Release references and locks
- pthread_mutex_unlock( &this->mutex );
- mlt_cache_item_close( this->image_cache );
- mlt_cache_item_close( this->alpha_cache );
-
- 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_pixbuf 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 )
- load_filenames( this, producer_properties );
-
- // Generate a frame
- *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
-
- 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_pixbuf", 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, "pixbuf_position", mlt_producer_position( producer ) );
-
- // Refresh the image
- refresh_image( this, *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_pixbuf this = parent->child;
- pthread_mutex_destroy( &this->mutex );
- parent->close = NULL;
- mlt_producer_close( parent );
- mlt_properties_close( this->filenames );
- free( this );
-}
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