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some bugfixes, filter_shape producer, pixbuf takes svg xml, fezzik can take a service...
[melted] / src / modules / gtk2 / producer_pixbuf.c
1 /*
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>
5 *
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.
10 *
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.
15 *
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.
19 */
20
21 #include "producer_pixbuf.h"
22 #include <framework/mlt_frame.h>
23 #include <gdk-pixbuf/gdk-pixbuf.h>
24
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <math.h>
29 #include <sys/types.h>
30 #include <sys/stat.h>
31 #include <unistd.h>
32 #include <dirent.h>
33
34 typedef struct producer_pixbuf_s *producer_pixbuf;
35
36 struct producer_pixbuf_s
37 {
38 struct mlt_producer_s parent;
39
40 // File name list
41 char **filenames;
42 int count;
43 int image_idx;
44
45 int width;
46 int height;
47 uint8_t *image;
48 uint8_t *alpha;
49 };
50
51 static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
52 static void producer_close( mlt_producer parent );
53
54 static int filter_files( const struct dirent *de )
55 {
56 if ( de->d_name[ 0 ] != '.' )
57 return 1;
58 else
59 return 0;
60 }
61
62 mlt_producer producer_pixbuf_init( char *filename )
63 {
64 producer_pixbuf this = calloc( sizeof( struct producer_pixbuf_s ), 1 );
65 if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
66 {
67 mlt_producer producer = &this->parent;
68
69 // Get the properties interface
70 mlt_properties properties = mlt_producer_properties( &this->parent );
71
72 // Callback registration
73 producer->get_frame = producer_get_frame;
74 producer->close = producer_close;
75
76 // Set the default properties
77 mlt_properties_set( properties, "resource", filename );
78 mlt_properties_set_int( properties, "ttl", 25 );
79
80 // Initialise gobject types
81 g_type_init();
82
83 return producer;
84 }
85 free( this );
86 return NULL;
87 }
88
89 static void refresh_image( mlt_frame frame, int width, int height )
90 {
91 // Pixbuf
92 GdkPixbuf *pixbuf = NULL;
93 GError *error = NULL;
94
95 // Obtain properties of frame
96 mlt_properties properties = mlt_frame_properties( frame );
97
98 // Obtain the producer for this frame
99 producer_pixbuf this = mlt_properties_get_data( properties, "producer_pixbuf", NULL );
100
101 // Obtain the producer
102 mlt_producer producer = &this->parent;
103
104 // Obtain properties of producer
105 mlt_properties producer_props = mlt_producer_properties( producer );
106
107 // Get the time to live for each frame
108 double ttl = mlt_properties_get_int( producer_props, "ttl" );
109
110 // Get the original position of this frame
111 mlt_position position = mlt_properties_get_position( properties, "pixbuf_position" );
112
113 // Image index
114 int image_idx = ( int )floor( ( double )position / ttl ) % this->count;
115
116 // optimization for subsequent iterations on single picture
117 if ( width != 0 && this->image != NULL && image_idx == this->image_idx )
118 {
119 if ( width != this->width || height != this->height )
120 {
121 pixbuf = mlt_properties_get_data( producer_props, "pixbuf", NULL );
122 mlt_pool_release( this->image );
123 mlt_pool_release( this->alpha );
124 this->image = NULL;
125 this->alpha = NULL;
126 }
127 }
128 else if ( this->image == NULL || image_idx != this->image_idx )
129 {
130 mlt_pool_release( this->image );
131 mlt_pool_release( this->alpha );
132 this->image = NULL;
133 this->alpha = NULL;
134
135 this->image_idx = image_idx;
136 pixbuf = gdk_pixbuf_new_from_file( this->filenames[ image_idx ], &error );
137
138 if ( pixbuf != NULL )
139 {
140 // Register this pixbuf for destruction and reuse
141 mlt_properties_set_data( producer_props, "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
142
143 mlt_properties_set_int( producer_props, "real_width", gdk_pixbuf_get_width( pixbuf ) );
144 mlt_properties_set_int( producer_props, "real_height", gdk_pixbuf_get_height( pixbuf ) );
145
146 // Store the width/height of the pixbuf temporarily
147 this->width = gdk_pixbuf_get_width( pixbuf );
148 this->height = gdk_pixbuf_get_height( pixbuf );
149 }
150 }
151
152 // If we have a pixbuf
153 if ( pixbuf && width > 0 )
154 {
155 char *interps = mlt_properties_get( properties, "rescale.interp" );
156 int interp = GDK_INTERP_BILINEAR;
157
158 if ( strcmp( interps, "nearest" ) == 0 )
159 interp = GDK_INTERP_NEAREST;
160 else if ( strcmp( interps, "tiles" ) == 0 )
161 interp = GDK_INTERP_TILES;
162 else if ( strcmp( interps, "hyper" ) == 0 )
163 interp = GDK_INTERP_HYPER;
164
165 // Note - the original pixbuf is already safe and ready for destruction
166 pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
167
168 // Store width and height
169 this->width = width;
170 this->height = height;
171
172 // Allocate/define image
173 this->image = mlt_pool_alloc( width * ( height + 1 ) * 2 );
174
175 // Extract YUV422 and alpha
176 if ( gdk_pixbuf_get_has_alpha( pixbuf ) )
177 {
178 // Allocate the alpha mask
179 this->alpha = mlt_pool_alloc( this->width * this->height );
180
181 // Convert the image
182 mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
183 this->width, this->height,
184 gdk_pixbuf_get_rowstride( pixbuf ),
185 this->image, this->alpha );
186 }
187 else
188 {
189 // No alpha to extract
190 mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
191 this->width, this->height,
192 gdk_pixbuf_get_rowstride( pixbuf ),
193 this->image );
194 }
195
196 // Finished with pixbuf now
197 g_object_unref( pixbuf );
198 }
199
200 // Set width/height of frame
201 mlt_properties_set_int( properties, "width", this->width );
202 mlt_properties_set_int( properties, "height", this->height );
203 mlt_properties_set_int( properties, "real_width", mlt_properties_get_int( producer_props, "real_width" ) );
204 mlt_properties_set_int( properties, "real_height", mlt_properties_get_int( producer_props, "real_height" ) );
205
206 // pass the image data without destructor
207 mlt_properties_set_data( properties, "image", this->image, this->width * ( this->height + 1 ) * 2, NULL, NULL );
208 mlt_properties_set_data( properties, "alpha", this->alpha, this->width * this->height, NULL, NULL );
209 }
210
211 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
212 {
213 // Obtain properties of frame
214 mlt_properties properties = mlt_frame_properties( frame );
215
216 *width = mlt_properties_get_int( properties, "rescale_width" );
217 *height = mlt_properties_get_int( properties, "rescale_height" );
218
219 // Refresh the image
220 refresh_image( frame, *width, *height );
221
222 // Determine format
223 //mlt_producer this = mlt_properties_get_data( properties, "producer_pixbuf", NULL );
224 //*format = ( mlt_properties_get_int( mlt_producer_properties( this ), "bpp" ) == 4 ) ? mlt_image_rgb24a : mlt_image_rgb24;
225
226 // May need to know the size of the image to clone it
227 int size = 0;
228
229 // Get the image
230 uint8_t *image = mlt_properties_get_data( properties, "image", &size );
231
232 // Get width and height
233 *width = mlt_properties_get_int( properties, "width" );
234 *height = mlt_properties_get_int( properties, "height" );
235
236 // Clone if necessary
237 // NB: Cloning is necessary with this producer (due to processing of images ahead of use)
238 // The fault is not in the design of mlt, but in the implementation of pixbuf...
239 //if ( writable )
240 {
241 // Clone our image
242 uint8_t *copy = mlt_pool_alloc( size );
243 memcpy( copy, image, size );
244
245 // We're going to pass the copy on
246 image = copy;
247
248 // Now update properties so we free the copy after
249 mlt_properties_set_data( properties, "image", copy, size, mlt_pool_release, NULL );
250 }
251
252 // Pass on the image
253 *buffer = image;
254
255 return 0;
256 }
257
258 static uint8_t *producer_get_alpha_mask( mlt_frame this )
259 {
260 // Obtain properties of frame
261 mlt_properties properties = mlt_frame_properties( this );
262
263 // Return the alpha mask
264 return mlt_properties_get_data( properties, "alpha", NULL );
265 }
266
267 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
268 {
269 // Get the real structure for this producer
270 producer_pixbuf this = producer->child;
271
272 if ( this->count == 0 && mlt_properties_get( mlt_producer_properties( producer ), "resource" ) != NULL )
273 {
274 mlt_properties properties = mlt_producer_properties( producer );
275 char *filename = mlt_properties_get( properties, "resource" );
276
277 // Obtain filenames
278 if ( strchr( filename, '%' ) != NULL )
279 {
280 // handle picture sequences
281 int i = 0;
282 int gap = 0;
283 char full[1024];
284
285 while ( gap < 100 )
286 {
287 struct stat buf;
288 snprintf( full, 1023, filename, i ++ );
289 if ( stat( full, &buf ) == 0 )
290 {
291 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
292 this->filenames[ this->count ++ ] = strdup( full );
293 gap = 0;
294 }
295 else
296 {
297 gap ++;
298 }
299 }
300 mlt_properties_set_position( properties, "out", this->count * 250 );
301 }
302 else if ( strstr( filename, "/.all." ) != NULL )
303 {
304 char *dir_name = strdup( filename );
305 char *extension = strrchr( filename, '.' );
306 *( strstr( dir_name, "/.all." ) + 1 ) = '\0';
307 char fullname[ 1024 ];
308 strcpy( fullname, dir_name );
309 struct dirent **de = NULL;
310 int n = scandir( fullname, &de, filter_files, alphasort );
311 int i;
312 struct stat info;
313
314 for (i = 0; i < n; i++ )
315 {
316 snprintf( fullname, 1023, "%s%s", dir_name, de[i]->d_name );
317
318 if ( lstat( fullname, &info ) == 0 &&
319 ( S_ISREG( info.st_mode ) || ( strstr( fullname, extension ) && info.st_mode | S_IXUSR ) ) )
320 {
321 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
322 this->filenames[ this->count ++ ] = strdup( fullname );
323 }
324 free( de[ i ] );
325 }
326
327 free( de );
328 free( dir_name );
329 }
330 else if ( strstr( filename, "<svg" ) )
331 {
332 // Generate a temporary file for the svg
333 char fullname[ 1024 ] = "/tmp/mlt.XXXXXX";
334 int fd = mkstemp( fullname );
335
336 if ( fd > -1 )
337 {
338 // Write the svg into the temp file
339 ssize_t remaining_bytes = strlen( filename );
340 while ( remaining_bytes > 0 )
341 remaining_bytes -= write( fd, filename + strlen( filename ) - remaining_bytes, remaining_bytes );
342 close( fd );
343
344 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
345 this->filenames[ this->count ++ ] = strdup( fullname );
346
347 mlt_properties_set_position( properties, "out", 250 );
348
349 // Teehe - when the producer closes, delete the temp file and the space allo
350 mlt_properties_set_data( properties, "__temporary_file__", this->filenames[ this->count - 1 ], 0, ( mlt_destructor )unlink, NULL );
351 }
352 }
353 else
354 {
355 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
356 this->filenames[ this->count ++ ] = strdup( filename );
357 mlt_properties_set_position( properties, "out", 250 );
358 }
359 }
360
361 // Generate a frame
362 *frame = mlt_frame_init( );
363
364 if ( *frame != NULL && this->count > 0 )
365 {
366 // Obtain properties of frame and producer
367 mlt_properties properties = mlt_frame_properties( *frame );
368
369 // Set the producer on the frame properties
370 mlt_properties_set_data( properties, "producer_pixbuf", this, 0, NULL, NULL );
371
372 // Update timecode on the frame we're creating
373 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
374
375 // Ensure that we have a way to obtain the position in the get_image
376 mlt_properties_set_position( properties, "pixbuf_position", mlt_producer_position( producer ) );
377
378 // Refresh the image
379 refresh_image( *frame, 0, 0 );
380
381 // Set producer-specific frame properties
382 mlt_properties_set_int( properties, "progressive", 1 );
383 mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( properties, "real_width" )/mlt_properties_get_double( properties, "real_height" ) );
384
385 // Set alpha call back
386 ( *frame )->get_alpha_mask = producer_get_alpha_mask;
387
388 // Push the get_image method
389 mlt_frame_push_get_image( *frame, producer_get_image );
390 }
391
392 // Calculate the next timecode
393 mlt_producer_prepare_next( producer );
394
395 return 0;
396 }
397
398 static void producer_close( mlt_producer parent )
399 {
400 producer_pixbuf this = parent->child;
401 mlt_pool_release( this->image );
402 parent->close = NULL;
403 mlt_producer_close( parent );
404 while ( *this->filenames )
405 {
406 free( *this->filenames );
407 this->filenames++;
408 }
409 free( this );
410 }
411
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