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>
29 #include <sys/types.h>
34 typedef struct producer_pixbuf_s *producer_pixbuf;
36 struct producer_pixbuf_s
38 struct mlt_producer_s parent;
51 static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
52 static void producer_close( mlt_producer parent );
54 static int filter_files( const struct dirent *de )
56 if ( de->d_name[ 0 ] != '.' )
62 mlt_producer producer_pixbuf_init( char *filename )
64 producer_pixbuf this = calloc( sizeof( struct producer_pixbuf_s ), 1 );
65 if ( filename != NULL && this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
67 mlt_producer producer = &this->parent;
69 // Get the properties interface
70 mlt_properties properties = mlt_producer_properties( &this->parent );
72 // Callback registration
73 producer->get_frame = producer_get_frame;
74 producer->close = producer_close;
76 // Set the default properties
77 mlt_properties_set( properties, "resource", filename );
78 mlt_properties_set_int( properties, "ttl", 25 );
81 if ( strchr( filename, '%' ) != NULL )
83 // handle picture sequences
91 snprintf( full, 1023, filename, i ++ );
92 if ( stat( full, &buf ) == 0 )
94 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
95 this->filenames[ this->count ++ ] = strdup( full );
103 mlt_properties_set_position( properties, "out", this->count * 250 );
105 else if ( strstr( filename, "/.all." ) != NULL )
107 char *dir_name = strdup( filename );
108 char *extension = strrchr( filename, '.' );
109 *( strstr( dir_name, "/.all." ) + 1 ) = '\0';
110 char fullname[ 1024 ];
111 strcpy( fullname, dir_name );
112 struct dirent **de = NULL;
113 int n = scandir( fullname, &de, filter_files, alphasort );
117 for (i = 0; i < n; i++ )
119 snprintf( fullname, 1023, "%s%s", dir_name, de[i]->d_name );
121 if ( lstat( fullname, &info ) == 0 &&
122 ( S_ISREG( info.st_mode ) || ( strstr( fullname, extension ) && info.st_mode | S_IXUSR ) ) )
124 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
125 this->filenames[ this->count ++ ] = strdup( fullname );
135 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
136 this->filenames[ this->count ++ ] = strdup( filename );
137 mlt_properties_set_position( properties, "out", 250 );
140 // Initialise gobject types
149 static void refresh_image( mlt_frame frame, int width, int height )
152 GdkPixbuf *pixbuf = NULL;
153 GError *error = NULL;
155 // Obtain properties of frame
156 mlt_properties properties = mlt_frame_properties( frame );
158 // Obtain the producer for this frame
159 producer_pixbuf this = mlt_properties_get_data( properties, "producer_pixbuf", NULL );
161 // Obtain the producer
162 mlt_producer producer = &this->parent;
164 // Obtain properties of producer
165 mlt_properties producer_props = mlt_producer_properties( producer );
167 // Get the time to live for each frame
168 double ttl = mlt_properties_get_int( producer_props, "ttl" );
170 // Get the original position of this frame
171 mlt_position position = mlt_properties_get_position( properties, "pixbuf_position" );
174 int image_idx = ( int )floor( ( double )position / ttl ) % this->count;
176 // optimization for subsequent iterations on single picture
177 if ( width != 0 && this->image != NULL && image_idx == this->image_idx )
179 if ( width != this->width || height != this->height )
181 pixbuf = mlt_properties_get_data( producer_props, "pixbuf", NULL );
182 mlt_pool_release( this->image );
183 mlt_pool_release( this->alpha );
188 else if ( this->image == NULL || image_idx != this->image_idx )
190 mlt_pool_release( this->image );
191 mlt_pool_release( this->alpha );
195 this->image_idx = image_idx;
196 pixbuf = gdk_pixbuf_new_from_file( this->filenames[ image_idx ], &error );
198 if ( pixbuf != NULL )
200 // Register this pixbuf for destruction and reuse
201 mlt_properties_set_data( producer_props, "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
203 mlt_properties_set_int( producer_props, "real_width", gdk_pixbuf_get_width( pixbuf ) );
204 mlt_properties_set_int( producer_props, "real_height", gdk_pixbuf_get_height( pixbuf ) );
206 // Store the width/height of the pixbuf temporarily
207 this->width = gdk_pixbuf_get_width( pixbuf );
208 this->height = gdk_pixbuf_get_height( pixbuf );
212 // If we have a pixbuf
213 if ( pixbuf && width > 0 )
215 char *interps = mlt_properties_get( properties, "rescale.interp" );
216 int interp = GDK_INTERP_BILINEAR;
218 if ( strcmp( interps, "nearest" ) == 0 )
219 interp = GDK_INTERP_NEAREST;
220 else if ( strcmp( interps, "tiles" ) == 0 )
221 interp = GDK_INTERP_TILES;
222 else if ( strcmp( interps, "hyper" ) == 0 )
223 interp = GDK_INTERP_HYPER;
225 // Note - the original pixbuf is already safe and ready for destruction
226 pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
228 // Store width and height
230 this->height = height;
232 // Allocate/define image
233 this->image = mlt_pool_alloc( width * ( height + 1 ) * 2 );
235 // Extract YUV422 and alpha
236 if ( gdk_pixbuf_get_has_alpha( pixbuf ) )
238 // Allocate the alpha mask
239 this->alpha = mlt_pool_alloc( this->width * this->height );
242 mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
243 this->width, this->height,
244 gdk_pixbuf_get_rowstride( pixbuf ),
245 this->image, this->alpha );
249 // No alpha to extract
250 mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
251 this->width, this->height,
252 gdk_pixbuf_get_rowstride( pixbuf ),
256 // Finished with pixbuf now
257 g_object_unref( pixbuf );
260 // Set width/height of frame
261 mlt_properties_set_int( properties, "width", this->width );
262 mlt_properties_set_int( properties, "height", this->height );
263 mlt_properties_set_int( properties, "real_width", mlt_properties_get_int( producer_props, "real_width" ) );
264 mlt_properties_set_int( properties, "real_height", mlt_properties_get_int( producer_props, "real_height" ) );
266 // pass the image data without destructor
267 mlt_properties_set_data( properties, "image", this->image, this->width * ( this->height + 1 ) * 2, NULL, NULL );
268 mlt_properties_set_data( properties, "alpha", this->alpha, this->width * this->height, NULL, NULL );
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 *width = mlt_properties_get_int( properties, "rescale_width" );
277 *height = mlt_properties_get_int( properties, "rescale_height" );
280 refresh_image( frame, *width, *height );
283 //mlt_producer this = mlt_properties_get_data( properties, "producer_pixbuf", NULL );
284 //*format = ( mlt_properties_get_int( mlt_producer_properties( this ), "bpp" ) == 4 ) ? mlt_image_rgb24a : mlt_image_rgb24;
286 // May need to know the size of the image to clone it
290 uint8_t *image = mlt_properties_get_data( properties, "image", &size );
292 // Get width and height
293 *width = mlt_properties_get_int( properties, "width" );
294 *height = mlt_properties_get_int( properties, "height" );
296 // Clone if necessary
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 pixbuf...
302 uint8_t *copy = mlt_pool_alloc( size );
303 memcpy( copy, image, size );
305 // We're going to pass the copy on
308 // Now update properties so we free the copy after
309 mlt_properties_set_data( properties, "image", copy, size, mlt_pool_release, NULL );
318 static uint8_t *producer_get_alpha_mask( mlt_frame this )
320 // Obtain properties of frame
321 mlt_properties properties = mlt_frame_properties( this );
323 // Return the alpha mask
324 return mlt_properties_get_data( properties, "alpha", NULL );
327 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
329 // Get the real structure for this producer
330 producer_pixbuf this = producer->child;
333 *frame = mlt_frame_init( );
335 if ( *frame != NULL && this->count > 0 )
337 // Obtain properties of frame and producer
338 mlt_properties properties = mlt_frame_properties( *frame );
340 // Set the producer on the frame properties
341 mlt_properties_set_data( properties, "producer_pixbuf", this, 0, NULL, NULL );
343 // Update timecode on the frame we're creating
344 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
346 // Ensure that we have a way to obtain the position in the get_image
347 mlt_properties_set_position( properties, "pixbuf_position", mlt_producer_position( producer ) );
350 refresh_image( *frame, 0, 0 );
352 // Set producer-specific frame properties
353 mlt_properties_set_int( properties, "progressive", 1 );
354 mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( properties, "real_width" )/mlt_properties_get_double( properties, "real_height" ) );
356 // Set alpha call back
357 ( *frame )->get_alpha_mask = producer_get_alpha_mask;
359 // Push the get_image method
360 mlt_frame_push_get_image( *frame, producer_get_image );
363 // Calculate the next timecode
364 mlt_producer_prepare_next( producer );
369 static void producer_close( mlt_producer parent )
371 producer_pixbuf this = parent->child;
372 mlt_pool_release( this->image );
373 parent->close = NULL;
374 mlt_producer_close( parent );