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[melted] / src / modules / core / transition_luma.c
1 /*
2 * transition_luma.c -- a generic dissolve/wipe processor
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
5 *
6 * Adapted from Kino Plugin Timfx, which is
7 * Copyright (C) 2002 Timothy M. Shead <tshead@k-3d.com>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 #include <framework/mlt.h>
25
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <ctype.h>
29 #include <string.h>
30 #include <math.h>
31
32 /** Calculate the position for this frame.
33 */
34
35 static float position_calculate( mlt_transition this, mlt_frame frame )
36 {
37 // Get the in and out position
38 mlt_position in = mlt_transition_get_in( this );
39 mlt_position out = mlt_transition_get_out( this );
40
41 // Get the position of the frame
42 char *name = mlt_properties_get( MLT_TRANSITION_PROPERTIES( this ), "_unique_id" );
43 mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), name );
44
45 // Now do the calcs
46 return ( float )( position - in ) / ( float )( out - in + 1 );
47 }
48
49 /** Calculate the field delta for this frame - position between two frames.
50 */
51
52 static float delta_calculate( mlt_transition this, mlt_frame frame )
53 {
54 // Get the in and out position
55 mlt_position in = mlt_transition_get_in( this );
56 mlt_position out = mlt_transition_get_out( this );
57
58 // Get the position of the frame
59 mlt_position position = mlt_frame_get_position( frame );
60
61 // Now do the calcs
62 float x = ( float )( position - in ) / ( float )( out - in + 1 );
63 float y = ( float )( position + 1 - in ) / ( float )( out - in + 1 );
64
65 return ( y - x ) / 2.0;
66 }
67
68 static inline int dissolve_yuv( mlt_frame this, mlt_frame that, float weight, int width, int height )
69 {
70 int ret = 0;
71 int width_src = width, height_src = height;
72 mlt_image_format format = mlt_image_yuv422;
73 uint8_t *p_src, *p_dest;
74 uint8_t *p, *q;
75 uint8_t *limit;
76 uint8_t *alpha_src;
77 uint8_t *alpha_dst;
78
79 int32_t weigh = weight * ( 1 << 16 );
80 int32_t weigh_complement = ( 1 - weight ) * ( 1 << 16 );
81
82 if ( mlt_properties_get( &this->parent, "distort" ) )
83 mlt_properties_set( &that->parent, "distort", mlt_properties_get( &this->parent, "distort" ) );
84 mlt_properties_set_int( &that->parent, "consumer_deinterlace", mlt_properties_get_int( &this->parent, "consumer_deinterlace" ) );
85 mlt_frame_get_image( this, &p_dest, &format, &width, &height, 1 );
86 alpha_dst = mlt_frame_get_alpha_mask( this );
87 mlt_frame_get_image( that, &p_src, &format, &width_src, &height_src, 0 );
88 alpha_src = mlt_frame_get_alpha_mask( that );
89
90 // Pick the lesser of two evils ;-)
91 width_src = width_src > width ? width : width_src;
92 height_src = height_src > height ? height : height_src;
93
94 p = p_dest;
95 q = alpha_dst;
96 limit = p_dest + height_src * width_src * 2;
97
98 while ( p < limit )
99 {
100 *p_dest++ = ( *p_src++ * weigh + *p++ * weigh_complement ) >> 16;
101 *p_dest++ = ( *p_src++ * weigh + *p++ * weigh_complement ) >> 16;
102 *alpha_dst++ = ( *alpha_src++ * weigh + *q++ * weigh_complement ) >> 16;
103 }
104
105 return ret;
106 }
107
108 // image processing functions
109
110 static inline int32_t smoothstep( int32_t edge1, int32_t edge2, uint32_t a )
111 {
112 if ( a < edge1 )
113 return 0;
114
115 if ( a >= edge2 )
116 return 0x10000;
117
118 a = ( ( a - edge1 ) << 16 ) / ( edge2 - edge1 );
119
120 return ( ( ( a * a ) >> 16 ) * ( ( 3 << 16 ) - ( 2 * a ) ) ) >> 16;
121 }
122
123 /** powerful stuff
124
125 \param field_order -1 = progressive, 0 = lower field first, 1 = top field first
126 */
127 static void luma_composite( mlt_frame a_frame, mlt_frame b_frame, int luma_width, int luma_height,
128 uint16_t *luma_bitmap, float pos, float frame_delta, float softness, int field_order,
129 int *width, int *height )
130 {
131 int width_src = *width, height_src = *height;
132 int width_dest = *width, height_dest = *height;
133 mlt_image_format format_src = mlt_image_yuv422, format_dest = mlt_image_yuv422;
134 uint8_t *p_src, *p_dest;
135 int i, j;
136 int stride_src;
137 int stride_dest;
138 uint16_t weight = 0;
139
140 format_src = mlt_image_yuv422;
141 format_dest = mlt_image_yuv422;
142
143 if ( mlt_properties_get( &a_frame->parent, "distort" ) )
144 mlt_properties_set( &b_frame->parent, "distort", mlt_properties_get( &a_frame->parent, "distort" ) );
145 mlt_properties_set_int( &b_frame->parent, "consumer_deinterlace", mlt_properties_get_int( &a_frame->parent, "consumer_deinterlace" ) );
146 mlt_frame_get_image( a_frame, &p_dest, &format_dest, &width_dest, &height_dest, 1 );
147 mlt_frame_get_image( b_frame, &p_src, &format_src, &width_src, &height_src, 0 );
148
149 // Pick the lesser of two evils ;-)
150 width_src = width_src > width_dest ? width_dest : width_src;
151 height_src = height_src > height_dest ? height_dest : height_src;
152
153 stride_src = width_src * 2;
154 stride_dest = width_dest * 2;
155
156 // Offset the position based on which field we're looking at ...
157 int32_t field_pos[ 2 ];
158 field_pos[ 0 ] = ( pos + ( ( field_order == 0 ? 1 : 0 ) * frame_delta * 0.5 ) ) * ( 1 << 16 ) * ( 1.0 + softness );
159 field_pos[ 1 ] = ( pos + ( ( field_order == 0 ? 0 : 1 ) * frame_delta * 0.5 ) ) * ( 1 << 16 ) * ( 1.0 + softness );
160
161 register uint8_t *p;
162 register uint8_t *q;
163 register uint8_t *o;
164 uint16_t *l;
165
166 uint32_t value;
167
168 int32_t x_diff = ( luma_width << 16 ) / *width;
169 int32_t y_diff = ( luma_height << 16 ) / *height;
170 int32_t x_offset = 0;
171 int32_t y_offset = 0;
172 uint8_t *p_row;
173 uint8_t *q_row;
174
175 int32_t i_softness = softness * ( 1 << 16 );
176
177 int field_count = field_order < 0 ? 1 : 2;
178 int field_stride_src = field_count * stride_src;
179 int field_stride_dest = field_count * stride_dest;
180 int field = 0;
181
182 // composite using luma map
183 while ( field < field_count )
184 {
185 p_row = p_src + field * stride_src;
186 q_row = p_dest + field * stride_dest;
187 y_offset = field << 16;
188 i = field;
189
190 while ( i < height_src )
191 {
192 p = p_row;
193 q = q_row;
194 o = q;
195 l = luma_bitmap + ( y_offset >> 16 ) * ( luma_width * field_count );
196 x_offset = 0;
197 j = width_src;
198
199 while( j -- )
200 {
201 weight = l[ x_offset >> 16 ];
202 value = smoothstep( weight, i_softness + weight, field_pos[ field ] );
203 *o ++ = ( *p ++ * value + *q++ * ( ( 1 << 16 ) - value ) ) >> 16;
204 *o ++ = ( *p ++ * value + *q++ * ( ( 1 << 16 ) - value ) ) >> 16;
205 x_offset += x_diff;
206 }
207
208 y_offset += y_diff;
209 i += field_count;
210 p_row += field_stride_src;
211 q_row += field_stride_dest;
212 }
213
214 field ++;
215 }
216 }
217
218 /** Load the luma map from PGM stream.
219 */
220
221 static void luma_read_pgm( FILE *f, uint16_t **map, int *width, int *height )
222 {
223 uint8_t *data = NULL;
224 while (1)
225 {
226 char line[128];
227 char comment[128];
228 int i = 2;
229 int maxval;
230 int bpp;
231 uint16_t *p;
232
233 line[127] = '\0';
234
235 // get the magic code
236 if ( fgets( line, 127, f ) == NULL )
237 break;
238
239 // skip comments
240 while ( sscanf( line, " #%s", comment ) > 0 )
241 if ( fgets( line, 127, f ) == NULL )
242 break;
243
244 if ( line[0] != 'P' || line[1] != '5' )
245 break;
246
247 // skip white space and see if a new line must be fetched
248 for ( i = 2; i < 127 && line[i] != '\0' && isspace( line[i] ); i++ );
249 if ( ( line[i] == '\0' || line[i] == '#' ) && fgets( line, 127, f ) == NULL )
250 break;
251
252 // skip comments
253 while ( sscanf( line, " #%s", comment ) > 0 )
254 if ( fgets( line, 127, f ) == NULL )
255 break;
256
257 // get the dimensions
258 if ( line[0] == 'P' )
259 i = sscanf( line, "P5 %d %d %d", width, height, &maxval );
260 else
261 i = sscanf( line, "%d %d %d", width, height, &maxval );
262
263 // get the height value, if not yet
264 if ( i < 2 )
265 {
266 if ( fgets( line, 127, f ) == NULL )
267 break;
268
269 // skip comments
270 while ( sscanf( line, " #%s", comment ) > 0 )
271 if ( fgets( line, 127, f ) == NULL )
272 break;
273
274 i = sscanf( line, "%d", height );
275 if ( i == 0 )
276 break;
277 else
278 i = 2;
279 }
280
281 // get the maximum gray value, if not yet
282 if ( i < 3 )
283 {
284 if ( fgets( line, 127, f ) == NULL )
285 break;
286
287 // skip comments
288 while ( sscanf( line, " #%s", comment ) > 0 )
289 if ( fgets( line, 127, f ) == NULL )
290 break;
291
292 i = sscanf( line, "%d", &maxval );
293 if ( i == 0 )
294 break;
295 }
296
297 // determine if this is one or two bytes per pixel
298 bpp = maxval > 255 ? 2 : 1;
299
300 // allocate temporary storage for the raw data
301 data = mlt_pool_alloc( *width * *height * bpp );
302 if ( data == NULL )
303 break;
304
305 // read the raw data
306 if ( fread( data, *width * *height * bpp, 1, f ) != 1 )
307 break;
308
309 // allocate the luma bitmap
310 *map = p = (uint16_t*)mlt_pool_alloc( *width * *height * sizeof( uint16_t ) );
311 if ( *map == NULL )
312 break;
313
314 // proces the raw data into the luma bitmap
315 for ( i = 0; i < *width * *height * bpp; i += bpp )
316 {
317 if ( bpp == 1 )
318 *p++ = data[ i ] << 8;
319 else
320 *p++ = ( data[ i ] << 8 ) + data[ i+1 ];
321 }
322
323 break;
324 }
325
326 if ( data != NULL )
327 mlt_pool_release( data );
328 }
329
330 /** Generate a luma map from an RGB image.
331 */
332
333 static void luma_read_yuv422( uint8_t *image, uint16_t **map, int width, int height )
334 {
335 int i;
336 int size = width * height * 2;
337
338 // allocate the luma bitmap
339 uint16_t *p = *map = ( uint16_t* )mlt_pool_alloc( width * height * sizeof( uint16_t ) );
340 if ( *map == NULL )
341 return;
342
343 // proces the image data into the luma bitmap
344 for ( i = 0; i < size; i += 2 )
345 *p++ = ( image[ i ] - 16 ) * 299; // 299 = 65535 / 219
346 }
347
348 /** Generate a luma map from a YUV image.
349 */
350 static void luma_read_rgb24( uint8_t *image, uint16_t **map, int width, int height )
351 {
352 }
353
354 /** Get the image.
355 */
356
357 static int transition_get_image( mlt_frame a_frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
358 {
359 // Get the b frame from the stack
360 mlt_frame b_frame = mlt_frame_pop_frame( a_frame );
361
362 // Get the transition object
363 mlt_transition transition = mlt_frame_pop_service( a_frame );
364
365 // Get the properties of the transition
366 mlt_properties properties = MLT_TRANSITION_PROPERTIES( transition );
367
368 // Get the properties of the a frame
369 mlt_properties a_props = MLT_FRAME_PROPERTIES( a_frame );
370
371 // Get the properties of the b frame
372 mlt_properties b_props = MLT_FRAME_PROPERTIES( b_frame );
373
374 // This compositer is yuv422 only
375 *format = mlt_image_yuv422;
376
377 // The cached luma map information
378 int luma_width = mlt_properties_get_int( properties, "width" );
379 int luma_height = mlt_properties_get_int( properties, "height" );
380 uint16_t *luma_bitmap = mlt_properties_get_data( properties, "bitmap", NULL );
381 char *current_resource = mlt_properties_get( properties, "_resource" );
382
383 // If the filename property changed, reload the map
384 char *resource = mlt_properties_get( properties, "resource" );
385
386 // Correct width/height if not specified
387 if ( luma_width == 0 || luma_height == 0 )
388 {
389 luma_width = mlt_properties_get_int( a_props, "width" );
390 luma_height = mlt_properties_get_int( a_props, "height" );
391 }
392
393 if ( resource != current_resource )
394 {
395 char temp[ 512 ];
396 char *extension = strrchr( resource, '.' );
397
398 if ( strchr( resource, '%' ) )
399 {
400 FILE *test;
401 sprintf( temp, "%s/lumas/%s/%s", mlt_environment( "MLT_DATA" ), mlt_environment( "MLT_NORMALISATION" ), strchr( resource, '%' ) + 1 );
402 test = fopen( temp, "r" );
403 if ( test == NULL )
404 strcat( temp, ".png" );
405 else
406 fclose( test );
407 resource = temp;
408 extension = strrchr( resource, '.' );
409 }
410
411 // See if it is a PGM
412 if ( extension != NULL && strcmp( extension, ".pgm" ) == 0 )
413 {
414 // Open PGM
415 FILE *f = fopen( resource, "r" );
416 if ( f != NULL )
417 {
418 // Load from PGM
419 luma_read_pgm( f, &luma_bitmap, &luma_width, &luma_height );
420 fclose( f );
421
422 // Set the transition properties
423 mlt_properties_set_int( properties, "width", luma_width );
424 mlt_properties_set_int( properties, "height", luma_height );
425 mlt_properties_set( properties, "_resource", resource );
426 mlt_properties_set_data( properties, "bitmap", luma_bitmap, luma_width * luma_height * 2, mlt_pool_release, NULL );
427 }
428 }
429 else if (!*resource)
430 {
431 luma_bitmap = NULL;
432 mlt_properties_set( properties, "_resource", NULL );
433 mlt_properties_set_data( properties, "bitmap", luma_bitmap, 0, mlt_pool_release, NULL );
434 }
435 else
436 {
437 // Get the factory producer service
438 char *factory = mlt_properties_get( properties, "factory" );
439
440 // Create the producer
441 mlt_profile profile = mlt_service_profile( MLT_TRANSITION_SERVICE( transition ) );
442 mlt_producer producer = mlt_factory_producer( profile, factory, resource );
443
444 // If we have one
445 if ( producer != NULL )
446 {
447 // Get the producer properties
448 mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( producer );
449
450 // Ensure that we loop
451 mlt_properties_set( producer_properties, "eof", "loop" );
452
453 // Now pass all producer. properties on the transition down
454 mlt_properties_pass( producer_properties, properties, "producer." );
455
456 // We will get the alpha frame from the producer
457 mlt_frame luma_frame = NULL;
458
459 // Get the luma frame
460 if ( mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer ), &luma_frame, 0 ) == 0 )
461 {
462 uint8_t *luma_image = NULL;
463 mlt_image_format luma_format = mlt_image_yuv422;
464
465 // Get image from the luma producer
466 mlt_properties_set( MLT_FRAME_PROPERTIES( luma_frame ), "rescale.interp", "nearest" );
467 mlt_frame_get_image( luma_frame, &luma_image, &luma_format, &luma_width, &luma_height, 0 );
468
469 // Generate the luma map
470 if ( luma_image != NULL && luma_format == mlt_image_yuv422 )
471 luma_read_yuv422( luma_image, &luma_bitmap, luma_width, luma_height );
472
473 else if ( luma_image != NULL && luma_format == mlt_image_rgb24 )
474 luma_read_rgb24( luma_image, &luma_bitmap, luma_width, luma_height );
475
476 // Set the transition properties
477 mlt_properties_set_int( properties, "width", luma_width );
478 mlt_properties_set_int( properties, "height", luma_height );
479 mlt_properties_set( properties, "_resource", resource);
480 mlt_properties_set_data( properties, "bitmap", luma_bitmap, luma_width * luma_height * 2, mlt_pool_release, NULL );
481
482 // Cleanup the luma frame
483 mlt_frame_close( luma_frame );
484 }
485
486 // Cleanup the luma producer
487 mlt_producer_close( producer );
488 }
489 }
490 }
491
492 // Arbitrary composite defaults
493 float mix = position_calculate( transition, a_frame );
494 float frame_delta = delta_calculate( transition, a_frame );
495
496 float luma_softness = mlt_properties_get_double( properties, "softness" );
497 int progressive =
498 mlt_properties_get_int( a_props, "consumer_deinterlace" ) ||
499 mlt_properties_get_int( properties, "progressive" ) ||
500 mlt_properties_get_int( b_props, "luma.progressive" );
501 int top_field_first = mlt_properties_get_int( b_props, "top_field_first" );
502 int reverse = mlt_properties_get_int( properties, "reverse" );
503 int invert = mlt_properties_get_int( properties, "invert" );
504
505 if ( mlt_properties_get( a_props, "rescale.interp" ) == NULL || !strcmp( mlt_properties_get( a_props, "rescale.interp" ), "none" ) )
506 mlt_properties_set( a_props, "rescale.interp", "nearest" );
507
508 // Since we are the consumer of the b_frame, we must pass along this
509 // consumer property from the a_frame
510 if ( mlt_properties_get_double( a_props, "aspect_ratio" ) == 0.0 )
511 mlt_properties_set_double( a_props, "aspect_ratio", mlt_properties_get_double( a_props, "consumer_aspect_ratio" ) );
512 if ( mlt_properties_get_double( b_props, "aspect_ratio" ) == 0.0 )
513 mlt_properties_set_double( b_props, "aspect_ratio", mlt_properties_get_double( a_props, "consumer_aspect_ratio" ) );
514 mlt_properties_set_double( b_props, "consumer_aspect_ratio", mlt_properties_get_double( a_props, "consumer_aspect_ratio" ) );
515
516 // Honour the reverse here
517 if ( mix >= 1.0 )
518 mix -= floor( mix );
519
520 mix = reverse || invert ? 1 - mix : mix;
521 frame_delta *= reverse || invert ? -1.0 : 1.0;
522
523 // Ensure we get scaling on the b_frame
524 if ( mlt_properties_get( b_props, "rescale.interp" ) == NULL || !strcmp( mlt_properties_get( b_props, "rescale.interp" ), "none" ) )
525 mlt_properties_set( b_props, "rescale.interp", "nearest" );
526
527 if ( mlt_properties_get( properties, "fixed" ) )
528 mix = mlt_properties_get_double( properties, "fixed" );
529
530
531 if ( luma_width > 0 && luma_height > 0 && luma_bitmap != NULL )
532 // Composite the frames using a luma map
533 luma_composite( !invert ? a_frame : b_frame, !invert ? b_frame : a_frame, luma_width, luma_height, luma_bitmap, mix, frame_delta,
534 luma_softness, progressive ? -1 : top_field_first, width, height );
535 else
536 // Dissolve the frames using the time offset for mix value
537 dissolve_yuv( a_frame, b_frame, mix, *width, *height );
538
539
540 // Extract the a_frame image info
541 *width = mlt_properties_get_int( !invert ? a_props : b_props, "width" );
542 *height = mlt_properties_get_int( !invert ? a_props : b_props, "height" );
543 *image = mlt_properties_get_data( !invert ? a_props : b_props, "image", NULL );
544
545 return 0;
546 }
547
548
549 /** Luma transition processing.
550 */
551
552 static mlt_frame transition_process( mlt_transition transition, mlt_frame a_frame, mlt_frame b_frame )
553 {
554 // Get a unique name to store the frame position
555 char *name = mlt_properties_get( MLT_TRANSITION_PROPERTIES( transition ), "_unique_id" );
556
557 // Assign the current position to the name
558 mlt_properties_set_position( MLT_FRAME_PROPERTIES( a_frame ), name, mlt_frame_get_position( a_frame ) );
559
560 // Push the transition on to the frame
561 mlt_frame_push_service( a_frame, transition );
562
563 // Push the b_frame on to the stack
564 mlt_frame_push_frame( a_frame, b_frame );
565
566 // Push the transition method
567 mlt_frame_push_get_image( a_frame, transition_get_image );
568
569 return a_frame;
570 }
571
572 /** Constructor for the filter.
573 */
574
575 mlt_transition transition_luma_init( mlt_profile profile, mlt_service_type type, const char *id, char *lumafile )
576 {
577 mlt_transition transition = mlt_transition_new( );
578 if ( transition != NULL )
579 {
580 // Set the methods
581 transition->process = transition_process;
582
583 // Default factory
584 mlt_properties_set( MLT_TRANSITION_PROPERTIES( transition ), "factory", "fezzik" );
585
586 // Set the main property
587 mlt_properties_set( MLT_TRANSITION_PROPERTIES( transition ), "resource", lumafile );
588
589 // Inform apps and framework that this is a video only transition
590 mlt_properties_set_int( MLT_TRANSITION_PROPERTIES( transition ), "_transition_type", 1 );
591
592 return transition;
593 }
594 return NULL;
595 }
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