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 program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * 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
;
54 static int producer_get_frame( mlt_producer parent
, mlt_frame_ptr frame
, int index
);
55 static void producer_close( mlt_producer parent
);
57 static int filter_files( const struct dirent
*de
)
59 if ( de
->d_name
[ 0 ] != '.' )
65 mlt_producer
producer_pixbuf_init( char *filename
)
67 producer_pixbuf
this = calloc( sizeof( struct producer_pixbuf_s
), 1 );
68 if ( this != NULL
&& mlt_producer_init( &this->parent
, this ) == 0 )
70 mlt_producer producer
= &this->parent
;
72 // Get the properties interface
73 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( &this->parent
);
75 // Callback registration
76 producer
->get_frame
= producer_get_frame
;
77 producer
->close
= ( mlt_destructor
)producer_close
;
79 // Set the default properties
80 mlt_properties_set( properties
, "resource", filename
);
81 mlt_properties_set_int( properties
, "ttl", 25 );
82 mlt_properties_set_int( properties
, "aspect_ratio", 1 );
83 mlt_properties_set_int( properties
, "progressive", 1 );
91 static void refresh_image( mlt_frame frame
, int width
, int height
)
94 GdkPixbuf
*pixbuf
= mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame
), "pixbuf", NULL
);
97 // Obtain properties of frame
98 mlt_properties properties
= MLT_FRAME_PROPERTIES( frame
);
100 // Obtain the producer for this frame
101 producer_pixbuf
this = mlt_properties_get_data( properties
, "producer_pixbuf", NULL
);
103 // Obtain the producer
104 mlt_producer producer
= &this->parent
;
106 // Obtain properties of producer
107 mlt_properties producer_props
= MLT_PRODUCER_PROPERTIES( producer
);
109 // Get the time to live for each frame
110 double ttl
= mlt_properties_get_int( producer_props
, "ttl" );
112 // Get the original position of this frame
113 mlt_position position
= mlt_properties_get_position( properties
, "pixbuf_position" );
116 int image_idx
= ( int )floor( ( double )position
/ ttl
) % this->count
;
118 pthread_mutex_lock( &fastmutex
);
120 // optimization for subsequent iterations on single picture
121 if ( width
!= 0 && this->image
!= NULL
&& image_idx
== this->image_idx
)
123 if ( width
!= this->width
|| height
!= this->height
)
125 pixbuf
= mlt_properties_get_data( producer_props
, "_pixbuf", NULL
);
126 mlt_pool_release( this->image
);
127 mlt_pool_release( this->alpha
);
132 else if ( pixbuf
== NULL
&& ( this->image
== NULL
|| image_idx
!= this->image_idx
) )
134 mlt_pool_release( this->image
);
135 mlt_pool_release( this->alpha
);
139 this->image_idx
= image_idx
;
140 pixbuf
= gdk_pixbuf_new_from_file( this->filenames
[ image_idx
], &error
);
142 if ( pixbuf
!= NULL
)
144 // Register this pixbuf for destruction and reuse
145 mlt_events_block( producer_props
, NULL
);
146 mlt_properties_set_data( producer_props
, "_pixbuf", pixbuf
, 0, ( mlt_destructor
)g_object_unref
, NULL
);
147 g_object_ref( pixbuf
);
148 mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame
), "pixbuf", pixbuf
, 0, ( mlt_destructor
)g_object_unref
, NULL
);
150 mlt_properties_set_int( producer_props
, "_real_width", gdk_pixbuf_get_width( pixbuf
) );
151 mlt_properties_set_int( producer_props
, "_real_height", gdk_pixbuf_get_height( pixbuf
) );
152 mlt_events_unblock( producer_props
, NULL
);
154 // Store the width/height of the pixbuf temporarily
155 this->width
= gdk_pixbuf_get_width( pixbuf
);
156 this->height
= gdk_pixbuf_get_height( pixbuf
);
160 // If we have a pixbuf
161 if ( pixbuf
&& width
> 0 )
163 char *interps
= mlt_properties_get( properties
, "rescale.interp" );
164 int interp
= GDK_INTERP_BILINEAR
;
166 if ( strcmp( interps
, "nearest" ) == 0 )
167 interp
= GDK_INTERP_NEAREST
;
168 else if ( strcmp( interps
, "tiles" ) == 0 )
169 interp
= GDK_INTERP_TILES
;
170 else if ( strcmp( interps
, "hyper" ) == 0 )
171 interp
= GDK_INTERP_HYPER
;
173 // Note - the original pixbuf is already safe and ready for destruction
174 pixbuf
= gdk_pixbuf_scale_simple( pixbuf
, width
, height
, interp
);
176 // Store width and height
178 this->height
= height
;
180 // Allocate/define image
181 this->image
= mlt_pool_alloc( width
* ( height
+ 1 ) * 2 );
183 // Extract YUV422 and alpha
184 if ( gdk_pixbuf_get_has_alpha( pixbuf
) )
186 // Allocate the alpha mask
187 this->alpha
= mlt_pool_alloc( this->width
* this->height
);
190 mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf
),
191 this->width
, this->height
,
192 gdk_pixbuf_get_rowstride( pixbuf
),
193 this->image
, this->alpha
);
197 // No alpha to extract
198 mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf
),
199 this->width
, this->height
,
200 gdk_pixbuf_get_rowstride( pixbuf
),
204 // Finished with pixbuf now
205 g_object_unref( pixbuf
);
208 // Set width/height of frame
209 mlt_properties_set_int( properties
, "width", this->width
);
210 mlt_properties_set_int( properties
, "height", this->height
);
211 mlt_properties_set_int( properties
, "real_width", mlt_properties_get_int( producer_props
, "_real_width" ) );
212 mlt_properties_set_int( properties
, "real_height", mlt_properties_get_int( producer_props
, "_real_height" ) );
214 // pass the image data without destructor
215 mlt_properties_set_data( properties
, "image", this->image
, this->width
* ( this->height
+ 1 ) * 2, NULL
, NULL
);
216 mlt_properties_set_data( properties
, "alpha", this->alpha
, this->width
* this->height
, NULL
, NULL
);
218 pthread_mutex_unlock( &fastmutex
);
221 static int producer_get_image( mlt_frame frame
, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
223 // Obtain properties of frame
224 mlt_properties properties
= MLT_FRAME_PROPERTIES( frame
);
226 // We need to know the size of the image to clone it
231 uint8_t *alpha
= NULL
;
233 *width
= mlt_properties_get_int( properties
, "rescale_width" );
234 *height
= mlt_properties_get_int( properties
, "rescale_height" );
237 refresh_image( frame
, *width
, *height
);
240 *buffer
= mlt_properties_get_data( properties
, "image", &image_size
);
241 alpha
= mlt_properties_get_data( properties
, "alpha", &alpha_size
);
243 // Get width and height (may have changed during the refresh)
244 *width
= mlt_properties_get_int( properties
, "width" );
245 *height
= mlt_properties_get_int( properties
, "height" );
247 // NB: Cloning is necessary with this producer (due to processing of images ahead of use)
248 // The fault is not in the design of mlt, but in the implementation of the pixbuf producer...
249 if ( *buffer
!= NULL
)
251 // Clone the image and the alpha
252 uint8_t *image_copy
= mlt_pool_alloc( image_size
);
253 uint8_t *alpha_copy
= mlt_pool_alloc( alpha_size
);
255 memcpy( image_copy
, *buffer
, image_size
);
257 // Copy or default the alpha
259 memcpy( alpha_copy
, alpha
, alpha_size
);
261 memset( alpha_copy
, 255, alpha_size
);
263 // Now update properties so we free the copy after
264 mlt_properties_set_data( properties
, "image", image_copy
, image_size
, mlt_pool_release
, NULL
);
265 mlt_properties_set_data( properties
, "alpha", alpha_copy
, alpha_size
, mlt_pool_release
, NULL
);
267 // We're going to pass the copy on
268 *buffer
= image_copy
;
272 // TODO: Review all cases of invalid images
273 *buffer
= mlt_pool_alloc( 50 * 50 * 2 );
274 mlt_properties_set_data( properties
, "image", *buffer
, image_size
, mlt_pool_release
, NULL
);
282 static uint8_t *producer_get_alpha_mask( mlt_frame
this )
284 // Obtain properties of frame
285 mlt_properties properties
= MLT_FRAME_PROPERTIES( this );
287 // Return the alpha mask
288 return mlt_properties_get_data( properties
, "alpha", NULL
);
291 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
293 // Get the real structure for this producer
294 producer_pixbuf
this = producer
->child
;
296 // Fetch the producers properties
297 mlt_properties producer_properties
= MLT_PRODUCER_PROPERTIES( producer
);
299 if ( this->count
== 0 && mlt_properties_get( producer_properties
, "resource" ) != NULL
)
301 char *filename
= mlt_properties_get( producer_properties
, "resource" );
304 if ( strstr( filename
, "<svg" ) )
306 // Generate a temporary file for the svg
307 char fullname
[ 1024 ] = "/tmp/mlt.XXXXXX";
308 int fd
= mkstemp( fullname
);
312 // Write the svg into the temp file
313 ssize_t remaining_bytes
;
314 char *xml
= filename
;
316 // Strip leading crap
317 while ( xml
[0] != '<' )
320 remaining_bytes
= strlen( xml
);
321 while ( remaining_bytes
> 0 )
322 remaining_bytes
-= write( fd
, xml
+ strlen( xml
) - remaining_bytes
, remaining_bytes
);
325 this->filenames
= realloc( this->filenames
, sizeof( char * ) * ( this->count
+ 1 ) );
326 this->filenames
[ this->count
++ ] = strdup( fullname
);
328 // Teehe - when the producer closes, delete the temp file and the space allo
329 mlt_properties_set_data( producer_properties
, "__temporary_file__", this->filenames
[ this->count
- 1 ], 0, ( mlt_destructor
)unlink
, NULL
);
333 else if ( strchr( filename
, '%' ) != NULL
)
335 // handle picture sequences
336 int i
= mlt_properties_get_int( producer_properties
, "begin" );
343 snprintf( full
, 1023, filename
, i
++ );
344 if ( stat( full
, &buf
) == 0 )
346 this->filenames
= realloc( this->filenames
, sizeof( char * ) * ( this->count
+ 1 ) );
347 this->filenames
[ this->count
++ ] = strdup( full
);
356 else if ( strstr( filename
, "/.all." ) != NULL
)
358 char *dir_name
= strdup( filename
);
359 char *extension
= strrchr( filename
, '.' );
360 *( strstr( dir_name
, "/.all." ) + 1 ) = '\0';
361 char fullname
[ 1024 ];
362 strcpy( fullname
, dir_name
);
363 struct dirent
**de
= NULL
;
364 int n
= scandir( fullname
, &de
, filter_files
, alphasort
);
368 for (i
= 0; i
< n
; i
++ )
370 snprintf( fullname
, 1023, "%s%s", dir_name
, de
[i
]->d_name
);
372 if ( strstr( fullname
, extension
) && lstat( fullname
, &info
) == 0 &&
373 ( S_ISREG( info
.st_mode
) || info
.st_mode
| S_IXUSR
) )
375 this->filenames
= realloc( this->filenames
, sizeof( char * ) * ( this->count
+ 1 ) );
376 this->filenames
[ this->count
++ ] = strdup( fullname
);
386 this->filenames
= realloc( this->filenames
, sizeof( char * ) * ( this->count
+ 1 ) );
387 this->filenames
[ this->count
++ ] = strdup( filename
);
392 *frame
= mlt_frame_init( );
394 if ( *frame
!= NULL
&& this->count
> 0 )
396 // Obtain properties of frame and producer
397 mlt_properties properties
= MLT_FRAME_PROPERTIES( *frame
);
399 // Set the producer on the frame properties
400 mlt_properties_set_data( properties
, "producer_pixbuf", this, 0, NULL
, NULL
);
402 // Update timecode on the frame we're creating
403 mlt_frame_set_position( *frame
, mlt_producer_position( producer
) );
405 // Ensure that we have a way to obtain the position in the get_image
406 mlt_properties_set_position( properties
, "pixbuf_position", mlt_producer_position( producer
) );
409 refresh_image( *frame
, 0, 0 );
411 // Set producer-specific frame properties
412 mlt_properties_set_int( properties
, "progressive", mlt_properties_get_int( producer_properties
, "progressive" ) );
413 mlt_properties_set_double( properties
, "aspect_ratio", mlt_properties_get_double( producer_properties
, "aspect_ratio" ) );
415 // Set alpha call back
416 ( *frame
)->get_alpha_mask
= producer_get_alpha_mask
;
418 // Push the get_image method
419 mlt_frame_push_get_image( *frame
, producer_get_image
);
422 // Calculate the next timecode
423 mlt_producer_prepare_next( producer
);
428 static void producer_close( mlt_producer parent
)
430 producer_pixbuf
this = parent
->child
;
431 mlt_pool_release( this->image
);
432 parent
->close
= NULL
;
433 mlt_producer_close( parent
);
434 while ( this->count
-- )
435 free( this->filenames
[ this->count
] );
436 free( this->filenames
);