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 "producer_pixbuf.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" );
113 int image_idx
= ( int )floor( ( double )position
/ ttl
) % this->count
;
116 char image_key
[ 10 ];
117 sprintf( image_key
, "%d", image_idx
);
119 pthread_mutex_lock( &fastmutex
);
121 // Check if the frame is already loaded
126 cache
= mlt_properties_new( );
127 mlt_properties_set_data( producer_props
, "_cache", cache
, 0, ( mlt_destructor
)mlt_properties_close
, NULL
);
130 mlt_frame cached
= mlt_properties_get_data( cache
, image_key
, NULL
);
134 this->image_idx
= image_idx
;
135 mlt_properties cached_props
= MLT_FRAME_PROPERTIES( cached
);
136 this->width
= mlt_properties_get_int( cached_props
, "width" );
137 this->height
= mlt_properties_get_int( cached_props
, "height" );
138 mlt_properties_set_int( producer_props
, "_real_width", mlt_properties_get_int( cached_props
, "real_width" ) );
139 mlt_properties_set_int( producer_props
, "_real_height", mlt_properties_get_int( cached_props
, "real_height" ) );
140 this->image
= mlt_properties_get_data( cached_props
, "image", NULL
);
141 this->alpha
= mlt_properties_get_data( cached_props
, "alpha", NULL
);
143 if ( width
!= 0 && ( width
!= this->width
|| height
!= this->height
) )
148 // optimization for subsequent iterations on single picture
149 if ( width
!= 0 && this->image
!= NULL
&& image_idx
== this->image_idx
)
151 if ( width
!= this->width
|| height
!= this->height
)
153 pixbuf
= mlt_properties_get_data( producer_props
, "_pixbuf", NULL
);
156 mlt_pool_release( this->image
);
157 mlt_pool_release( this->alpha
);
163 else if ( pixbuf
== NULL
&& ( this->image
== NULL
|| image_idx
!= this->image_idx
) )
167 mlt_pool_release( this->image
);
168 mlt_pool_release( this->alpha
);
173 this->image_idx
= image_idx
;
174 pixbuf
= gdk_pixbuf_new_from_file( mlt_properties_get_value( this->filenames
, image_idx
), &error
);
176 if ( pixbuf
!= NULL
)
178 // Register this pixbuf for destruction and reuse
179 mlt_events_block( producer_props
, NULL
);
180 mlt_properties_set_data( producer_props
, "_pixbuf", pixbuf
, 0, ( mlt_destructor
)g_object_unref
, NULL
);
181 g_object_ref( pixbuf
);
182 mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame
), "pixbuf", pixbuf
, 0, ( mlt_destructor
)g_object_unref
, NULL
);
184 mlt_properties_set_int( producer_props
, "_real_width", gdk_pixbuf_get_width( pixbuf
) );
185 mlt_properties_set_int( producer_props
, "_real_height", gdk_pixbuf_get_height( pixbuf
) );
186 mlt_events_unblock( producer_props
, NULL
);
188 // Store the width/height of the pixbuf temporarily
189 this->width
= gdk_pixbuf_get_width( pixbuf
);
190 this->height
= gdk_pixbuf_get_height( pixbuf
);
194 // If we have a pixbuf
195 if ( pixbuf
&& width
> 0 )
197 char *interps
= mlt_properties_get( properties
, "rescale.interp" );
198 int interp
= GDK_INTERP_BILINEAR
;
200 if ( strcmp( interps
, "nearest" ) == 0 )
201 interp
= GDK_INTERP_NEAREST
;
202 else if ( strcmp( interps
, "tiles" ) == 0 )
203 interp
= GDK_INTERP_TILES
;
204 else if ( strcmp( interps
, "hyper" ) == 0 )
205 interp
= GDK_INTERP_HYPER
;
207 // Note - the original pixbuf is already safe and ready for destruction
208 pixbuf
= gdk_pixbuf_scale_simple( pixbuf
, width
, height
, interp
);
210 // Store width and height
212 this->height
= height
;
214 // Allocate/define image
215 this->image
= mlt_pool_alloc( width
* ( height
+ 1 ) * 2 );
217 // Extract YUV422 and alpha
218 if ( gdk_pixbuf_get_has_alpha( pixbuf
) )
220 // Allocate the alpha mask
221 this->alpha
= mlt_pool_alloc( this->width
* this->height
);
224 mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf
),
225 this->width
, this->height
,
226 gdk_pixbuf_get_rowstride( pixbuf
),
227 this->image
, this->alpha
);
231 // No alpha to extract
232 mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf
),
233 this->width
, this->height
,
234 gdk_pixbuf_get_rowstride( pixbuf
),
238 // Finished with pixbuf now
239 g_object_unref( pixbuf
);
241 // Ensure we update the cache when we need to
242 update_cache
= use_cache
;
245 // Set width/height of frame
246 mlt_properties_set_int( properties
, "width", this->width
);
247 mlt_properties_set_int( properties
, "height", this->height
);
248 mlt_properties_set_int( properties
, "real_width", mlt_properties_get_int( producer_props
, "_real_width" ) );
249 mlt_properties_set_int( properties
, "real_height", mlt_properties_get_int( producer_props
, "_real_height" ) );
251 // pass the image data without destructor
252 mlt_properties_set_data( properties
, "image", this->image
, this->width
* ( this->height
+ 1 ) * 2, NULL
, NULL
);
253 mlt_properties_set_data( properties
, "alpha", this->alpha
, this->width
* this->height
, NULL
, NULL
);
257 mlt_frame cached
= mlt_frame_init( );
258 mlt_properties cached_props
= MLT_FRAME_PROPERTIES( cached
);
259 mlt_properties_set_int( cached_props
, "width", this->width
);
260 mlt_properties_set_int( cached_props
, "height", this->height
);
261 mlt_properties_set_int( cached_props
, "real_width", mlt_properties_get_int( producer_props
, "_real_width" ) );
262 mlt_properties_set_int( cached_props
, "real_height", mlt_properties_get_int( producer_props
, "_real_height" ) );
263 mlt_properties_set_data( cached_props
, "image", this->image
, this->width
* ( this->height
+ 1 ) * 2, mlt_pool_release
, NULL
);
264 mlt_properties_set_data( cached_props
, "alpha", this->alpha
, this->width
* this->height
, mlt_pool_release
, NULL
);
265 mlt_properties_set_data( cache
, image_key
, cached
, 0, ( mlt_destructor
)mlt_frame_close
, NULL
);
268 pthread_mutex_unlock( &fastmutex
);
271 static int producer_get_image( mlt_frame frame
, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
273 // Obtain properties of frame
274 mlt_properties properties
= MLT_FRAME_PROPERTIES( frame
);
276 // We need to know the size of the image to clone it
281 uint8_t *alpha
= NULL
;
283 *width
= mlt_properties_get_int( properties
, "rescale_width" );
284 *height
= mlt_properties_get_int( properties
, "rescale_height" );
287 refresh_image( frame
, *width
, *height
);
290 *buffer
= mlt_properties_get_data( properties
, "image", &image_size
);
291 alpha
= mlt_properties_get_data( properties
, "alpha", &alpha_size
);
293 // Get width and height (may have changed during the refresh)
294 *width
= mlt_properties_get_int( properties
, "width" );
295 *height
= mlt_properties_get_int( properties
, "height" );
297 // NB: Cloning is necessary with this producer (due to processing of images ahead of use)
298 // The fault is not in the design of mlt, but in the implementation of the pixbuf producer...
299 if ( *buffer
!= NULL
)
301 if ( *format
== mlt_image_yuv422
|| *format
== mlt_image_yuv420p
)
303 // Clone the image and the alpha
304 uint8_t *image_copy
= mlt_pool_alloc( image_size
);
305 uint8_t *alpha_copy
= mlt_pool_alloc( alpha_size
);
307 memcpy( image_copy
, *buffer
, image_size
);
309 // Copy or default the alpha
311 memcpy( alpha_copy
, alpha
, alpha_size
);
313 memset( alpha_copy
, 255, alpha_size
);
315 // Now update properties so we free the copy after
316 mlt_properties_set_data( properties
, "image", image_copy
, image_size
, mlt_pool_release
, NULL
);
317 mlt_properties_set_data( properties
, "alpha", alpha_copy
, alpha_size
, mlt_pool_release
, NULL
);
319 // We're going to pass the copy on
320 *buffer
= image_copy
;
322 else if ( *format
== mlt_image_rgb24a
)
324 // Clone the image and the alpha
325 image_size
= *width
* ( *height
+ 1 ) * 4;
326 alpha_size
= *width
* ( *height
+ 1 );
327 uint8_t *image_copy
= mlt_pool_alloc( image_size
);
328 uint8_t *alpha_copy
= mlt_pool_alloc( alpha_size
);
330 mlt_convert_yuv422_to_rgb24a(*buffer
, image_copy
, (*width
)*(*height
));
332 // Now update properties so we free the copy after
333 mlt_properties_set_data( properties
, "image", image_copy
, image_size
, mlt_pool_release
, NULL
);
334 mlt_properties_set_data( properties
, "alpha", alpha_copy
, alpha_size
, mlt_pool_release
, NULL
);
336 // We're going to pass the copy on
337 *buffer
= image_copy
;
343 // TODO: Review all cases of invalid images
344 *buffer
= mlt_pool_alloc( 50 * 50 * 2 );
345 mlt_properties_set_data( properties
, "image", *buffer
, image_size
, mlt_pool_release
, NULL
);
353 static uint8_t *producer_get_alpha_mask( mlt_frame
this )
355 // Obtain properties of frame
356 mlt_properties properties
= MLT_FRAME_PROPERTIES( this );
358 // Return the alpha mask
359 return mlt_properties_get_data( properties
, "alpha", NULL
);
362 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
364 // Get the real structure for this producer
365 producer_pixbuf
this = producer
->child
;
367 // Fetch the producers properties
368 mlt_properties producer_properties
= MLT_PRODUCER_PROPERTIES( producer
);
370 if ( this->filenames
== NULL
&& mlt_properties_get( producer_properties
, "resource" ) != NULL
)
372 char *filename
= mlt_properties_get( producer_properties
, "resource" );
373 this->filenames
= mlt_properties_new( );
376 if ( strstr( filename
, "<svg" ) )
378 // Generate a temporary file for the svg
379 char fullname
[ 1024 ] = "/tmp/mlt.XXXXXX";
380 int fd
= mkstemp( fullname
);
384 // Write the svg into the temp file
385 ssize_t remaining_bytes
;
386 char *xml
= filename
;
388 // Strip leading crap
389 while ( xml
[0] != '<' )
392 remaining_bytes
= strlen( xml
);
393 while ( remaining_bytes
> 0 )
394 remaining_bytes
-= write( fd
, xml
+ strlen( xml
) - remaining_bytes
, remaining_bytes
);
397 mlt_properties_set( this->filenames
, "0", fullname
);
399 // Teehe - when the producer closes, delete the temp file and the space allo
400 mlt_properties_set_data( producer_properties
, "__temporary_file__", fullname
, 0, ( mlt_destructor
)unlink
, NULL
);
404 else if ( strchr( filename
, '%' ) != NULL
)
406 // handle picture sequences
407 int i
= mlt_properties_get_int( producer_properties
, "begin" );
416 snprintf( full
, 1023, filename
, i
++ );
417 if ( stat( full
, &buf
) == 0 )
419 sprintf( key
, "%d", keyvalue
++ );
420 mlt_properties_set( this->filenames
, "0", full
);
429 else if ( strstr( filename
, "/.all." ) != NULL
)
431 char wildcard
[ 1024 ];
432 char *dir_name
= strdup( filename
);
433 char *extension
= strrchr( dir_name
, '.' );
435 *( strstr( dir_name
, "/.all." ) + 1 ) = '\0';
436 sprintf( wildcard
, "*%s", extension
);
438 mlt_properties_dir_list( this->filenames
, dir_name
, wildcard
, 1 );
444 mlt_properties_set( this->filenames
, "0", filename
);
447 this->count
= mlt_properties_count( this->filenames
);
451 *frame
= mlt_frame_init( );
453 if ( *frame
!= NULL
&& this->count
> 0 )
455 // Obtain properties of frame and producer
456 mlt_properties properties
= MLT_FRAME_PROPERTIES( *frame
);
458 // Set the producer on the frame properties
459 mlt_properties_set_data( properties
, "producer_pixbuf", this, 0, NULL
, NULL
);
461 // Update timecode on the frame we're creating
462 mlt_frame_set_position( *frame
, mlt_producer_position( producer
) );
464 // Ensure that we have a way to obtain the position in the get_image
465 mlt_properties_set_position( properties
, "pixbuf_position", mlt_producer_position( producer
) );
468 refresh_image( *frame
, 0, 0 );
470 // Set producer-specific frame properties
471 mlt_properties_set_int( properties
, "progressive", mlt_properties_get_int( producer_properties
, "progressive" ) );
472 mlt_properties_set_double( properties
, "aspect_ratio", mlt_properties_get_double( producer_properties
, "aspect_ratio" ) );
474 // Set alpha call back
475 ( *frame
)->get_alpha_mask
= producer_get_alpha_mask
;
477 // Push the get_image method
478 mlt_frame_push_get_image( *frame
, producer_get_image
);
481 // Calculate the next timecode
482 mlt_producer_prepare_next( producer
);
487 static void producer_close( mlt_producer parent
)
489 producer_pixbuf
this = parent
->child
;
490 if ( !mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( parent
), "cache" ) )
492 mlt_pool_release( this->image
);
493 mlt_pool_release( this->alpha
);
495 parent
->close
= NULL
;
496 mlt_producer_close( parent
);
497 mlt_properties_close( this->filenames
);