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 static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
35 static void producer_close( mlt_producer parent );
43 static int filter_files( const struct dirent *de )
45 if ( de->d_name[ 0 ] != '.' )
52 mlt_producer producer_pixbuf_init( const char *filename )
54 producer_pixbuf this = calloc( sizeof( struct producer_pixbuf_s ), 1 );
55 if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
57 mlt_producer producer = &this->parent;
59 producer->get_frame = producer_get_frame;
60 producer->close = producer_close;
62 // Get the properties interface
63 mlt_properties properties = mlt_producer_properties( &this->parent );
65 // Set the default properties
66 mlt_properties_set_int( properties, "video_standard", mlt_video_standard_pal );
67 mlt_properties_set_double( properties, "ttl", 5 );
70 if ( strchr( filename, '%' ) != NULL )
72 // handle picture sequences
80 snprintf( full, 1023, filename, i ++ );
81 if ( stat( full, &buf ) == 0 )
83 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
84 this->filenames[ this->count ++ ] = strdup( full );
93 else if ( strstr( filename, "/.all." ) != NULL )
95 char *dir_name = strdup( filename );
96 char *extension = strrchr( filename, '.' );
97 *( strstr( dir_name, "/.all." ) + 1 ) = '\0';
98 char fullname[ 1024 ];
99 strcpy( fullname, dir_name );
100 struct dirent **de = NULL;
101 int n = scandir( fullname, &de, filter_files, alphasort );
105 for (i = 0; i < n; i++ )
107 snprintf( fullname, 1023, "%s%s", dir_name, de[i]->d_name );
109 if ( lstat( fullname, &info ) == 0 &&
110 ( S_ISREG( info.st_mode ) || ( strstr( fullname, extension ) && info.st_mode | S_IXUSR ) ) )
112 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
113 this->filenames[ this->count ++ ] = strdup( fullname );
123 this->filenames = realloc( this->filenames, sizeof( char * ) * ( this->count + 1 ) );
124 this->filenames[ this->count ++ ] = strdup( filename );
127 // Initialise gobject types
136 static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
138 // Obtain properties of frame
139 mlt_properties properties = mlt_frame_properties( this );
141 // May need to know the size of the image to clone it
145 uint8_t *image = mlt_properties_get_data( properties, "image", &size );
147 // Get width and height
148 *width = mlt_properties_get_int( properties, "width" );
149 *height = mlt_properties_get_int( properties, "height" );
151 // Clone if necessary
152 // NB: Cloning is necessary with this producer (due to processing of images ahead of use)
153 // The fault is not in the design of mlt, but in the implementation of pixbuf...
156 size = *width * *height * 2;
159 uint8_t *copy = malloc( size );
160 memcpy( copy, image, size );
162 // We're going to pass the copy on
165 // Now update properties so we free the copy after
166 mlt_properties_set_data( properties, "image", copy, size, free, NULL );
175 static uint8_t *producer_get_alpha_mask( mlt_frame this )
177 // Obtain properties of frame
178 mlt_properties properties = mlt_frame_properties( this );
180 // Return the alpha mask
181 return mlt_properties_get_data( properties, "alpha", NULL );
184 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
186 producer_pixbuf this = producer->child;
187 GdkPixbuf *pixbuf = NULL;
188 GError *error = NULL;
191 *frame = mlt_frame_init( );
193 // Obtain properties of frame
194 mlt_properties properties = mlt_frame_properties( *frame );
196 // Get the time to live for each frame
197 double ttl = mlt_properties_get_double( mlt_producer_properties( producer ), "ttl" );
200 int image_idx = ( int )floor( mlt_producer_position( producer ) / ttl ) % this->count;
202 // Update timecode on the frame we're creating
203 mlt_frame_set_timecode( *frame, mlt_producer_position( producer ) );
205 // optimization for subsequent iterations on single picture
206 if ( this->image != NULL && image_idx == this->image_idx )
209 mlt_properties_set_int( properties, "width", this->width );
210 mlt_properties_set_int( properties, "height", this->height );
212 // if picture sequence pass the image and alpha data without destructor
213 mlt_properties_set_data( properties, "image", this->image, 0, NULL, NULL );
214 mlt_properties_set_data( properties, "alpha", this->alpha, 0, NULL, NULL );
216 // Set alpha mask call back
217 ( *frame )->get_alpha_mask = producer_get_alpha_mask;
219 // Stack the get image callback
220 mlt_frame_push_get_image( *frame, producer_get_image );
226 this->image_idx = image_idx;
227 pixbuf = gdk_pixbuf_new_from_file( this->filenames[ image_idx ], &error );
230 // If we have a pixbuf
233 // Scale to adjust for sample aspect ratio
234 if ( mlt_properties_get_int( properties, "video_standard" ) == mlt_video_standard_pal )
236 GdkPixbuf *temp = pixbuf;
237 GdkPixbuf *scaled = gdk_pixbuf_scale_simple( pixbuf,
238 (gint) ( (float) gdk_pixbuf_get_width( pixbuf ) * 54.0/59.0),
239 gdk_pixbuf_get_height( pixbuf ), GDK_INTERP_HYPER );
241 g_object_unref( temp );
245 GdkPixbuf *temp = pixbuf;
246 GdkPixbuf *scaled = gdk_pixbuf_scale_simple( pixbuf,
247 (gint) ( (float) gdk_pixbuf_get_width( pixbuf ) * 11.0/10.0 ),
248 gdk_pixbuf_get_height( pixbuf ), GDK_INTERP_HYPER );
250 g_object_unref( temp );
253 // Store width and height
254 this->width = gdk_pixbuf_get_width( pixbuf );
255 this->height = gdk_pixbuf_get_height( pixbuf );
256 this->width -= this->width % 4;
257 this->height -= this->height % 2;
259 // Allocate/define image and alpha
260 uint8_t *image = malloc( this->width * this->height * 2 );
261 uint8_t *alpha = NULL;
263 // Extract YUV422 and alpha
264 if ( gdk_pixbuf_get_has_alpha( pixbuf ) )
266 // Allocate the alpha mask
267 alpha = malloc( this->width * this->height );
270 mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
271 this->width, this->height,
272 gdk_pixbuf_get_rowstride( pixbuf ),
277 // No alpha to extract
278 mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
279 this->width, this->height,
280 gdk_pixbuf_get_rowstride( pixbuf ),
284 // Finished with pixbuf now
285 g_object_unref( pixbuf );
287 // Set width/height of frame
288 mlt_properties_set_int( properties, "width", this->width );
289 mlt_properties_set_int( properties, "height", this->height );
291 // Pass alpha and image on properties with or without destructor
295 // pass the image and alpha data without destructor
296 mlt_properties_set_data( properties, "image", image, 0, NULL, NULL );
297 mlt_properties_set_data( properties, "alpha", alpha, 0, NULL, NULL );
299 // Set alpha call back
300 ( *frame )->get_alpha_mask = producer_get_alpha_mask;
302 // Push the get_image method
303 mlt_frame_push_get_image( *frame, producer_get_image );
306 // Calculate the next timecode
307 mlt_producer_prepare_next( producer );
312 static void producer_close( mlt_producer parent )
314 producer_pixbuf this = parent->child;
319 parent->close = NULL;
320 mlt_producer_close( parent );