2 * producer_pixbuf.c -- raster image loader based upon gdk-pixbuf
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <framework/mlt_producer.h>
22 #include <framework/mlt_frame.h>
23 #include <gdk-pixbuf/gdk-pixbuf.h>
30 #include <sys/types.h>
35 static pthread_mutex_t fastmutex
= PTHREAD_MUTEX_INITIALIZER
;
37 typedef struct producer_pixbuf_s
*producer_pixbuf
;
39 struct producer_pixbuf_s
41 struct mlt_producer_s parent
;
44 mlt_properties filenames
;
54 static int producer_get_frame( mlt_producer parent
, mlt_frame_ptr frame
, int index
);
55 static void producer_close( mlt_producer parent
);
57 mlt_producer
producer_pixbuf_init( char *filename
)
59 producer_pixbuf
this = calloc( sizeof( struct producer_pixbuf_s
), 1 );
60 if ( this != NULL
&& mlt_producer_init( &this->parent
, this ) == 0 )
62 mlt_producer producer
= &this->parent
;
64 // Get the properties interface
65 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( &this->parent
);
67 // Callback registration
68 producer
->get_frame
= producer_get_frame
;
69 producer
->close
= ( mlt_destructor
)producer_close
;
71 // Set the default properties
72 mlt_properties_set( properties
, "resource", filename
);
73 mlt_properties_set_int( properties
, "ttl", 25 );
74 mlt_properties_set_int( properties
, "aspect_ratio", 1 );
75 mlt_properties_set_int( properties
, "progressive", 1 );
83 static void refresh_image( mlt_frame frame
, int width
, int height
)
86 GdkPixbuf
*pixbuf
= mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame
), "pixbuf", NULL
);
89 // Obtain properties of frame
90 mlt_properties properties
= MLT_FRAME_PROPERTIES( frame
);
92 // Obtain the producer for this frame
93 producer_pixbuf
this = mlt_properties_get_data( properties
, "producer_pixbuf", NULL
);
95 // Obtain the producer
96 mlt_producer producer
= &this->parent
;
98 // Obtain properties of producer
99 mlt_properties producer_props
= MLT_PRODUCER_PROPERTIES( producer
);
101 // Obtain the cache flag and structure
102 int use_cache
= mlt_properties_get_int( producer_props
, "cache" );
103 mlt_properties cache
= mlt_properties_get_data( producer_props
, "_cache", NULL
);
104 int update_cache
= 0;
106 // Get the time to live for each frame
107 double ttl
= mlt_properties_get_int( producer_props
, "ttl" );
109 // Get the original position of this frame
110 mlt_position position
= mlt_properties_get_position( properties
, "pixbuf_position" );
111 position
+= mlt_producer_get_in( producer
);
114 int image_idx
= ( int )floor( ( double )position
/ ttl
) % this->count
;
117 char image_key
[ 10 ];
118 sprintf( image_key
, "%d", image_idx
);
120 pthread_mutex_lock( &fastmutex
);
122 // Check if the frame is already loaded
127 cache
= mlt_properties_new( );
128 mlt_properties_set_data( producer_props
, "_cache", cache
, 0, ( mlt_destructor
)mlt_properties_close
, NULL
);
131 mlt_frame cached
= mlt_properties_get_data( cache
, image_key
, NULL
);
135 this->image_idx
= image_idx
;
136 mlt_properties cached_props
= MLT_FRAME_PROPERTIES( cached
);
137 this->width
= mlt_properties_get_int( cached_props
, "width" );
138 this->height
= mlt_properties_get_int( cached_props
, "height" );
139 mlt_properties_set_int( producer_props
, "_real_width", mlt_properties_get_int( cached_props
, "real_width" ) );
140 mlt_properties_set_int( producer_props
, "_real_height", mlt_properties_get_int( cached_props
, "real_height" ) );
141 this->image
= mlt_properties_get_data( cached_props
, "image", NULL
);
142 this->alpha
= mlt_properties_get_data( cached_props
, "alpha", NULL
);
144 if ( width
!= 0 && ( width
!= this->width
|| height
!= this->height
) )
149 // optimization for subsequent iterations on single picture
150 if ( width
!= 0 && this->image
!= NULL
&& image_idx
== this->image_idx
)
152 if ( width
!= this->width
|| height
!= this->height
)
154 pixbuf
= mlt_properties_get_data( producer_props
, "_pixbuf", NULL
);
157 mlt_pool_release( this->image
);
158 mlt_pool_release( this->alpha
);
164 else if ( pixbuf
== NULL
&& ( this->image
== NULL
|| image_idx
!= this->image_idx
) )
168 mlt_pool_release( this->image
);
169 mlt_pool_release( this->alpha
);
174 this->image_idx
= image_idx
;
175 pixbuf
= gdk_pixbuf_new_from_file( mlt_properties_get_value( this->filenames
, image_idx
), &error
);
177 if ( pixbuf
!= NULL
)
179 // Register this pixbuf for destruction and reuse
180 mlt_events_block( producer_props
, NULL
);
181 mlt_properties_set_data( producer_props
, "_pixbuf", pixbuf
, 0, ( mlt_destructor
)g_object_unref
, NULL
);
182 g_object_ref( pixbuf
);
183 mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame
), "pixbuf", pixbuf
, 0, ( mlt_destructor
)g_object_unref
, NULL
);
185 mlt_properties_set_int( producer_props
, "_real_width", gdk_pixbuf_get_width( pixbuf
) );
186 mlt_properties_set_int( producer_props
, "_real_height", gdk_pixbuf_get_height( pixbuf
) );
187 mlt_events_unblock( producer_props
, NULL
);
189 // Store the width/height of the pixbuf temporarily
190 this->width
= gdk_pixbuf_get_width( pixbuf
);
191 this->height
= gdk_pixbuf_get_height( pixbuf
);
195 // If we have a pixbuf
196 if ( pixbuf
&& width
> 0 )
198 char *interps
= mlt_properties_get( properties
, "rescale.interp" );
199 int interp
= GDK_INTERP_BILINEAR
;
201 if ( strcmp( interps
, "nearest" ) == 0 )
202 interp
= GDK_INTERP_NEAREST
;
203 else if ( strcmp( interps
, "tiles" ) == 0 )
204 interp
= GDK_INTERP_TILES
;
205 else if ( strcmp( interps
, "hyper" ) == 0 )
206 interp
= GDK_INTERP_HYPER
;
208 // Note - the original pixbuf is already safe and ready for destruction
209 pixbuf
= gdk_pixbuf_scale_simple( pixbuf
, width
, height
, interp
);
211 // Store width and height
213 this->height
= height
;
215 // Allocate/define image
216 this->image
= mlt_pool_alloc( width
* ( height
+ 1 ) * 2 );
218 // Extract YUV422 and alpha
219 if ( gdk_pixbuf_get_has_alpha( pixbuf
) )
221 // Allocate the alpha mask
222 this->alpha
= mlt_pool_alloc( this->width
* this->height
);
225 mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf
),
226 this->width
, this->height
,
227 gdk_pixbuf_get_rowstride( pixbuf
),
228 this->image
, this->alpha
);
232 // No alpha to extract
233 mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf
),
234 this->width
, this->height
,
235 gdk_pixbuf_get_rowstride( pixbuf
),
239 // Finished with pixbuf now
240 g_object_unref( pixbuf
);
242 // Ensure we update the cache when we need to
243 update_cache
= use_cache
;
246 // Set width/height of frame
247 mlt_properties_set_int( properties
, "width", this->width
);
248 mlt_properties_set_int( properties
, "height", this->height
);
249 mlt_properties_set_int( properties
, "real_width", mlt_properties_get_int( producer_props
, "_real_width" ) );
250 mlt_properties_set_int( properties
, "real_height", mlt_properties_get_int( producer_props
, "_real_height" ) );
252 // pass the image data without destructor
253 mlt_properties_set_data( properties
, "image", this->image
, this->width
* ( this->height
+ 1 ) * 2, NULL
, NULL
);
254 mlt_properties_set_data( properties
, "alpha", this->alpha
, this->width
* this->height
, NULL
, NULL
);
258 mlt_frame cached
= mlt_frame_init( MLT_PRODUCER_SERVICE( producer
) );
259 mlt_properties cached_props
= MLT_FRAME_PROPERTIES( cached
);
260 mlt_properties_set_int( cached_props
, "width", this->width
);
261 mlt_properties_set_int( cached_props
, "height", this->height
);
262 mlt_properties_set_int( cached_props
, "real_width", mlt_properties_get_int( producer_props
, "_real_width" ) );
263 mlt_properties_set_int( cached_props
, "real_height", mlt_properties_get_int( producer_props
, "_real_height" ) );
264 mlt_properties_set_data( cached_props
, "image", this->image
, this->width
* ( this->height
+ 1 ) * 2, mlt_pool_release
, NULL
);
265 mlt_properties_set_data( cached_props
, "alpha", this->alpha
, this->width
* this->height
, mlt_pool_release
, NULL
);
266 mlt_properties_set_data( cache
, image_key
, cached
, 0, ( mlt_destructor
)mlt_frame_close
, NULL
);
269 pthread_mutex_unlock( &fastmutex
);
272 static int producer_get_image( mlt_frame frame
, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
274 // Obtain properties of frame
275 mlt_properties properties
= MLT_FRAME_PROPERTIES( frame
);
277 // We need to know the size of the image to clone it
282 uint8_t *alpha
= NULL
;
284 *width
= mlt_properties_get_int( properties
, "rescale_width" );
285 *height
= mlt_properties_get_int( properties
, "rescale_height" );
288 refresh_image( frame
, *width
, *height
);
291 *buffer
= mlt_properties_get_data( properties
, "image", &image_size
);
292 alpha
= mlt_properties_get_data( properties
, "alpha", &alpha_size
);
294 // Get width and height (may have changed during the refresh)
295 *width
= mlt_properties_get_int( properties
, "width" );
296 *height
= mlt_properties_get_int( properties
, "height" );
298 // NB: Cloning is necessary with this producer (due to processing of images ahead of use)
299 // The fault is not in the design of mlt, but in the implementation of the pixbuf producer...
300 if ( *buffer
!= NULL
)
302 if ( *format
== mlt_image_yuv422
|| *format
== mlt_image_yuv420p
)
304 // Clone the image and the alpha
305 uint8_t *image_copy
= mlt_pool_alloc( image_size
);
306 uint8_t *alpha_copy
= mlt_pool_alloc( alpha_size
);
308 memcpy( image_copy
, *buffer
, image_size
);
310 // Copy or default the alpha
312 memcpy( alpha_copy
, alpha
, alpha_size
);
314 memset( alpha_copy
, 255, alpha_size
);
316 // Now update properties so we free the copy after
317 mlt_properties_set_data( properties
, "image", image_copy
, image_size
, mlt_pool_release
, NULL
);
318 mlt_properties_set_data( properties
, "alpha", alpha_copy
, alpha_size
, mlt_pool_release
, NULL
);
320 // We're going to pass the copy on
321 *buffer
= image_copy
;
323 else if ( *format
== mlt_image_rgb24a
)
325 // Clone the image and the alpha
326 image_size
= *width
* ( *height
+ 1 ) * 4;
327 alpha_size
= *width
* ( *height
+ 1 );
328 uint8_t *image_copy
= mlt_pool_alloc( image_size
);
329 uint8_t *alpha_copy
= mlt_pool_alloc( alpha_size
);
331 mlt_convert_yuv422_to_rgb24a(*buffer
, image_copy
, (*width
)*(*height
));
333 // Now update properties so we free the copy after
334 mlt_properties_set_data( properties
, "image", image_copy
, image_size
, mlt_pool_release
, NULL
);
335 mlt_properties_set_data( properties
, "alpha", alpha_copy
, alpha_size
, mlt_pool_release
, NULL
);
337 // We're going to pass the copy on
338 *buffer
= image_copy
;
344 // TODO: Review all cases of invalid images
345 *buffer
= mlt_pool_alloc( 50 * 50 * 2 );
346 mlt_properties_set_data( properties
, "image", *buffer
, image_size
, mlt_pool_release
, NULL
);
354 static uint8_t *producer_get_alpha_mask( mlt_frame
this )
356 // Obtain properties of frame
357 mlt_properties properties
= MLT_FRAME_PROPERTIES( this );
359 // Return the alpha mask
360 return mlt_properties_get_data( properties
, "alpha", NULL
);
363 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
365 // Get the real structure for this producer
366 producer_pixbuf
this = producer
->child
;
368 // Fetch the producers properties
369 mlt_properties producer_properties
= MLT_PRODUCER_PROPERTIES( producer
);
371 if ( this->filenames
== NULL
&& mlt_properties_get( producer_properties
, "resource" ) != NULL
)
373 char *filename
= mlt_properties_get( producer_properties
, "resource" );
374 this->filenames
= mlt_properties_new( );
377 if ( strstr( filename
, "<svg" ) )
379 // Generate a temporary file for the svg
380 char fullname
[ 1024 ] = "/tmp/mlt.XXXXXX";
381 int fd
= mkstemp( fullname
);
385 // Write the svg into the temp file
386 ssize_t remaining_bytes
;
387 char *xml
= filename
;
389 // Strip leading crap
390 while ( xml
[0] != '<' )
393 remaining_bytes
= strlen( xml
);
394 while ( remaining_bytes
> 0 )
395 remaining_bytes
-= write( fd
, xml
+ strlen( xml
) - remaining_bytes
, remaining_bytes
);
398 mlt_properties_set( this->filenames
, "0", fullname
);
400 // Teehe - when the producer closes, delete the temp file and the space allo
401 mlt_properties_set_data( producer_properties
, "__temporary_file__", fullname
, 0, ( mlt_destructor
)unlink
, NULL
);
405 else if ( strchr( filename
, '%' ) != NULL
)
407 // handle picture sequences
408 int i
= mlt_properties_get_int( producer_properties
, "begin" );
417 snprintf( full
, 1023, filename
, i
++ );
418 if ( stat( full
, &buf
) == 0 )
420 sprintf( key
, "%d", keyvalue
++ );
421 mlt_properties_set( this->filenames
, key
, full
);
430 else if ( strstr( filename
, "/.all." ) != NULL
)
432 char wildcard
[ 1024 ];
433 char *dir_name
= strdup( filename
);
434 char *extension
= strrchr( dir_name
, '.' );
436 *( strstr( dir_name
, "/.all." ) + 1 ) = '\0';
437 sprintf( wildcard
, "*%s", extension
);
439 mlt_properties_dir_list( this->filenames
, dir_name
, wildcard
, 1 );
445 mlt_properties_set( this->filenames
, "0", filename
);
448 this->count
= mlt_properties_count( this->filenames
);
452 *frame
= mlt_frame_init( MLT_PRODUCER_SERVICE( producer
) );
454 if ( *frame
!= NULL
&& this->count
> 0 )
456 // Obtain properties of frame and producer
457 mlt_properties properties
= MLT_FRAME_PROPERTIES( *frame
);
459 // Set the producer on the frame properties
460 mlt_properties_set_data( properties
, "producer_pixbuf", this, 0, NULL
, NULL
);
462 // Update timecode on the frame we're creating
463 mlt_frame_set_position( *frame
, mlt_producer_position( producer
) );
465 // Ensure that we have a way to obtain the position in the get_image
466 mlt_properties_set_position( properties
, "pixbuf_position", mlt_producer_position( producer
) );
469 refresh_image( *frame
, 0, 0 );
471 // Set producer-specific frame properties
472 mlt_properties_set_int( properties
, "progressive", mlt_properties_get_int( producer_properties
, "progressive" ) );
473 mlt_properties_set_double( properties
, "aspect_ratio", mlt_properties_get_double( producer_properties
, "aspect_ratio" ) );
475 // Set alpha call back
476 ( *frame
)->get_alpha_mask
= producer_get_alpha_mask
;
478 // Push the get_image method
479 mlt_frame_push_get_image( *frame
, producer_get_image
);
482 // Calculate the next timecode
483 mlt_producer_prepare_next( producer
);
488 static void producer_close( mlt_producer parent
)
490 producer_pixbuf
this = parent
->child
;
491 if ( !mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( parent
), "cache" ) )
493 mlt_pool_release( this->image
);
494 mlt_pool_release( this->alpha
);
496 parent
->close
= NULL
;
497 mlt_producer_close( parent
);
498 mlt_properties_close( this->filenames
);