2 * transition_composite.c -- compose one image over another using alpha channel
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 "transition_composite.h"
22 #include <framework/mlt.h>
30 typedef void ( *composite_line_fn
)( uint8_t *dest
, uint8_t *src
, int width_src
, uint8_t *alpha
, int weight
, uint16_t *luma
, int softness
);
32 /* mmx function declarations */
34 void composite_line_yuv_mmx( uint8_t *dest
, uint8_t *src
, int width_src
, uint8_t *alpha
, int weight
, uint16_t *luma
, int softness
);
35 int composite_have_mmx( void );
43 struct mlt_geometry_item_s item
;
44 int nw
; // normalised width
45 int nh
; // normalised height
46 int sw
; // scaled width, not including consumer scale based upon w/nw
47 int sh
; // scaled height, not including consumer scale based upon h/nh
48 int halign
; // horizontal alignment: 0=left, 1=center, 2=right
49 int valign
; // vertical alignment: 0=top, 1=middle, 2=bottom
52 /** Parse the alignment properties into the geometry.
55 static int alignment_parse( char* align
)
60 else if ( isdigit( align
[ 0 ] ) )
62 else if ( align
[ 0 ] == 'c' || align
[ 0 ] == 'm' )
64 else if ( align
[ 0 ] == 'r' || align
[ 0 ] == 'b' )
70 /** Calculate real geometry.
73 static void geometry_calculate( mlt_transition
this, struct geometry_s
*output
, float position
)
75 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
76 mlt_geometry geometry
= mlt_properties_get_data( properties
, "geometries", NULL
);
77 int mirror_off
= mlt_properties_get_int( properties
, "mirror_off" );
78 int repeat_off
= mlt_properties_get_int( properties
, "repeat_off" );
79 int length
= mlt_geometry_get_length( geometry
);
82 if ( !repeat_off
&& position
>= length
&& length
!= 0 )
84 int section
= position
/ length
;
85 position
-= section
* length
;
86 if ( !mirror_off
&& section
% 2 == 1 )
87 position
= length
- position
;
90 // Fetch the key for the position
91 mlt_geometry_fetch( geometry
, &output
->item
, position
);
94 static mlt_geometry
transition_parse_keys( mlt_transition
this, int normalised_width
, int normalised_height
)
96 // Loop variable for property interrogation
99 // Get the properties of the transition
100 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
102 // Create an empty geometries object
103 mlt_geometry geometry
= mlt_geometry_init( );
105 // Get the in and out position
106 mlt_position in
= mlt_transition_get_in( this );
107 mlt_position out
= mlt_transition_get_out( this );
108 int length
= out
- in
+ 1;
109 double cycle
= mlt_properties_get_double( properties
, "cycle" );
111 // Get the new style geometry string
112 char *property
= mlt_properties_get( properties
, "geometry" );
114 // Allow a geometry repeat cycle
117 else if ( cycle
> 0 )
120 // Parse the geometry if we have one
121 mlt_geometry_parse( geometry
, property
, length
, normalised_width
, normalised_height
);
123 // Check if we're using the old style geometry
124 if ( property
== NULL
)
126 // DEPRECATED: Multiple keys for geometry information is inefficient and too rigid for
127 // practical use - while deprecated, it has been slightly extended too - keys can now
128 // be specified out of order, and can be blanked or NULL to simulate removal
130 // Structure to use for parsing and inserting
131 struct mlt_geometry_item_s item
;
133 // Parse the start property
135 if ( mlt_geometry_parse_item( geometry
, &item
, mlt_properties_get( properties
, "start" ) ) == 0 )
136 mlt_geometry_insert( geometry
, &item
);
138 // Parse the keys in between
139 for ( i
= 0; i
< mlt_properties_count( properties
); i
++ )
141 // Get the name of the property
142 char *name
= mlt_properties_get_name( properties
, i
);
144 // Check that it's valid
145 if ( !strncmp( name
, "key[", 4 ) )
147 // Get the value of the property
148 char *value
= mlt_properties_get_value( properties
, i
);
150 // Determine the frame number
151 item
.frame
= atoi( name
+ 4 );
153 // Parse and add to the list
154 if ( mlt_geometry_parse_item( geometry
, &item
, value
) == 0 )
155 mlt_geometry_insert( geometry
, &item
);
157 fprintf( stderr
, "Invalid Key - skipping %s = %s\n", name
, value
);
163 if ( mlt_geometry_parse_item( geometry
, &item
, mlt_properties_get( properties
, "end" ) ) == 0 )
164 mlt_geometry_insert( geometry
, &item
);
170 /** Adjust position according to scaled size and alignment properties.
173 static void alignment_calculate( struct geometry_s
*geometry
)
175 geometry
->item
.x
+= ( geometry
->item
.w
- geometry
->sw
) * geometry
->halign
/ 2;
176 geometry
->item
.y
+= ( geometry
->item
.h
- geometry
->sh
) * geometry
->valign
/ 2;
179 /** Calculate the position for this frame.
182 static int position_calculate( mlt_transition
this, mlt_position position
)
184 // Get the in and out position
185 mlt_position in
= mlt_transition_get_in( this );
188 return position
- in
;
191 /** Calculate the field delta for this frame - position between two frames.
194 static inline float delta_calculate( mlt_transition
this, mlt_frame frame
)
196 // Get the in and out position
197 mlt_position in
= mlt_transition_get_in( this );
198 mlt_position out
= mlt_transition_get_out( this );
199 float length
= out
- in
+ 1;
201 // Get the position of the frame
202 char *name
= mlt_properties_get( MLT_TRANSITION_PROPERTIES( this ), "_unique_id" );
203 mlt_position position
= mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame
), name
);
206 float x
= ( float )( position
- in
) / length
;
207 float y
= ( float )( position
+ 1 - in
) / length
;
209 return length
* ( y
- x
) / 2.0;
212 static int get_value( mlt_properties properties
, char *preferred
, char *fallback
)
214 int value
= mlt_properties_get_int( properties
, preferred
);
216 value
= mlt_properties_get_int( properties
, fallback
);
220 /** A linear threshold determination function.
223 static inline int32_t linearstep( int32_t edge1
, int32_t edge2
, int32_t a
)
231 return ( ( a
- edge1
) << 16 ) / ( edge2
- edge1
);
234 /** A smoother, non-linear threshold determination function.
237 static inline int32_t smoothstep( int32_t edge1
, int32_t edge2
, uint32_t a
)
245 a
= ( ( a
- edge1
) << 16 ) / ( edge2
- edge1
);
247 return ( ( ( a
* a
) >> 16 ) * ( ( 3 << 16 ) - ( 2 * a
) ) ) >> 16;
250 /** Load the luma map from PGM stream.
253 static void luma_read_pgm( FILE *f
, uint16_t **map
, int *width
, int *height
)
255 uint8_t *data
= NULL
;
267 // get the magic code
268 if ( fgets( line
, 127, f
) == NULL
)
272 while ( sscanf( line
, " #%s", comment
) > 0 )
273 if ( fgets( line
, 127, f
) == NULL
)
276 if ( line
[0] != 'P' || line
[1] != '5' )
279 // skip white space and see if a new line must be fetched
280 for ( i
= 2; i
< 127 && line
[i
] != '\0' && isspace( line
[i
] ); i
++ );
281 if ( ( line
[i
] == '\0' || line
[i
] == '#' ) && fgets( line
, 127, f
) == NULL
)
285 while ( sscanf( line
, " #%s", comment
) > 0 )
286 if ( fgets( line
, 127, f
) == NULL
)
289 // get the dimensions
290 if ( line
[0] == 'P' )
291 i
= sscanf( line
, "P5 %d %d %d", width
, height
, &maxval
);
293 i
= sscanf( line
, "%d %d %d", width
, height
, &maxval
);
295 // get the height value, if not yet
298 if ( fgets( line
, 127, f
) == NULL
)
302 while ( sscanf( line
, " #%s", comment
) > 0 )
303 if ( fgets( line
, 127, f
) == NULL
)
306 i
= sscanf( line
, "%d", height
);
313 // get the maximum gray value, if not yet
316 if ( fgets( line
, 127, f
) == NULL
)
320 while ( sscanf( line
, " #%s", comment
) > 0 )
321 if ( fgets( line
, 127, f
) == NULL
)
324 i
= sscanf( line
, "%d", &maxval
);
329 // determine if this is one or two bytes per pixel
330 bpp
= maxval
> 255 ?
2 : 1;
332 // allocate temporary storage for the raw data
333 data
= mlt_pool_alloc( *width
* *height
* bpp
);
338 if ( fread( data
, *width
* *height
* bpp
, 1, f
) != 1 )
341 // allocate the luma bitmap
342 *map
= p
= (uint16_t*)mlt_pool_alloc( *width
* *height
* sizeof( uint16_t ) );
346 // proces the raw data into the luma bitmap
347 for ( i
= 0; i
< *width
* *height
* bpp
; i
+= bpp
)
350 *p
++ = data
[ i
] << 8;
352 *p
++ = ( data
[ i
] << 8 ) + data
[ i
+ 1 ];
359 mlt_pool_release( data
);
362 /** Generate a luma map from any YUV image.
365 static void luma_read_yuv422( uint8_t *image
, uint16_t **map
, int width
, int height
)
369 // allocate the luma bitmap
370 uint16_t *p
= *map
= ( uint16_t* )mlt_pool_alloc( width
* height
* sizeof( uint16_t ) );
374 // proces the image data into the luma bitmap
375 for ( i
= 0; i
< width
* height
* 2; i
+= 2 )
376 *p
++ = ( image
[ i
] - 16 ) * 299; // 299 = 65535 / 219
380 /** Composite a source line over a destination line
384 void composite_line_yuv( uint8_t *dest
, uint8_t *src
, int width_src
, uint8_t *alpha
, int weight
, uint16_t *luma
, int softness
)
389 for ( j
= 0; j
< width_src
; j
++ )
391 a
= ( alpha
== NULL
) ?
255 : *alpha
++;
392 mix
= ( luma
== NULL
) ? weight
: smoothstep( luma
[ j
], luma
[ j
] + softness
, weight
+ softness
);
393 mix
= ( mix
* a
) >> 8;
394 *dest
= ( *src
++ * mix
+ *dest
* ( ( 1 << 16 ) - mix
) ) >> 16;
396 *dest
= ( *src
++ * mix
+ *dest
* ( ( 1 << 16 ) - mix
) ) >> 16;
401 /** Composite function.
404 static int composite_yuv( uint8_t *p_dest
, int width_dest
, int height_dest
, uint8_t *p_src
, int width_src
, int height_src
, uint8_t *p_alpha
, struct geometry_s geometry
, int field
, uint16_t *p_luma
, int32_t softness
, composite_line_fn line_fn
)
408 int x_src
= 0, y_src
= 0;
409 int32_t weight
= ( 1 << 16 ) * ( geometry
.item
.mix
/ 100 );
410 int step
= ( field
> -1 ) ?
2 : 1;
412 int stride_src
= width_src
* bpp
;
413 int stride_dest
= width_dest
* bpp
;
415 // Adjust to consumer scale
416 int x
= rint( 0.5 + geometry
.item
.x
* width_dest
/ geometry
.nw
);
417 int y
= rint( 0.5 + geometry
.item
.y
* height_dest
/ geometry
.nh
);
418 int x_uneven
= x
& 1;
420 // optimization points - no work to do
421 if ( width_src
<= 0 || height_src
<= 0 )
424 if ( ( x
< 0 && -x
>= width_src
) || ( y
< 0 && -y
>= height_src
) )
427 // crop overlay off the left edge of frame
435 // crop overlay beyond right edge of frame
436 if ( x
+ width_src
> width_dest
)
437 width_src
= width_dest
- x
;
439 // crop overlay off the top edge of the frame
447 // crop overlay below bottom edge of frame
448 if ( y
+ height_src
> height_dest
)
449 height_src
= height_dest
- y
;
451 // offset pointer into overlay buffer based on cropping
452 p_src
+= x_src
* bpp
+ y_src
* stride_src
;
454 // offset pointer into frame buffer based upon positive coordinates only!
455 p_dest
+= ( x
< 0 ?
0 : x
) * bpp
+ ( y
< 0 ?
0 : y
) * stride_dest
;
457 // offset pointer into alpha channel based upon cropping
459 p_alpha
+= x_src
+ y_src
* stride_src
/ bpp
;
461 // offset pointer into luma channel based upon cropping
463 p_luma
+= x_src
+ y_src
* stride_src
/ bpp
;
465 // Assuming lower field first
466 // Special care is taken to make sure the b_frame is aligned to the correct field.
467 // field 0 = lower field and y should be odd (y is 0-based).
468 // field 1 = upper field and y should be even.
469 if ( ( field
> -1 ) && ( y
% 2 == field
) )
471 if ( ( field
== 1 && y
< height_dest
- 1 ) || ( field
== 0 && y
== 0 ) )
472 p_dest
+= stride_dest
;
474 p_dest
-= stride_dest
;
477 // On the second field, use the other lines from b_frame
482 p_alpha
+= stride_src
/ bpp
;
488 int alpha_stride
= stride_src
/ bpp
;
490 // Make sure than x and w are even
497 // now do the compositing only to cropped extents
498 if ( line_fn
!= NULL
)
500 for ( i
= 0; i
< height_src
; i
+= step
)
502 line_fn( p_dest
, p_src
, width_src
, p_alpha
, weight
, p_luma
, softness
);
505 p_dest
+= stride_dest
;
507 p_alpha
+= alpha_stride
;
509 p_luma
+= alpha_stride
;
514 for ( i
= 0; i
< height_src
; i
+= step
)
516 composite_line_yuv( p_dest
, p_src
, width_src
, p_alpha
, weight
, p_luma
, softness
);
519 p_dest
+= stride_dest
;
521 p_alpha
+= alpha_stride
;
523 p_luma
+= alpha_stride
;
531 /** Scale 16bit greyscale luma map using nearest neighbor.
535 scale_luma ( uint16_t *dest_buf
, int dest_width
, int dest_height
, const uint16_t *src_buf
, int src_width
, int src_height
, int invert
)
538 register int x_step
= ( src_width
<< 16 ) / dest_width
;
539 register int y_step
= ( src_height
<< 16 ) / dest_height
;
540 register int x
, y
= 0;
542 for ( i
= 0; i
< dest_height
; i
++ )
544 const uint16_t *src
= src_buf
+ ( y
>> 16 ) * src_width
;
547 for ( j
= 0; j
< dest_width
; j
++ )
549 *dest_buf
++ = src
[ x
>> 16 ] ^ invert
;
556 static uint16_t* get_luma( mlt_properties properties
, int width
, int height
)
558 // The cached luma map information
559 int luma_width
= mlt_properties_get_int( properties
, "_luma.width" );
560 int luma_height
= mlt_properties_get_int( properties
, "_luma.height" );
561 uint16_t *luma_bitmap
= mlt_properties_get_data( properties
, "_luma.bitmap", NULL
);
562 int invert
= mlt_properties_get_int( properties
, "luma_invert" );
564 // If the filename property changed, reload the map
565 char *resource
= mlt_properties_get( properties
, "luma" );
569 if ( resource
!= NULL
&& strchr( resource
, '%' ) )
571 sprintf( temp
, "%s/lumas/%s/%s", mlt_factory_prefix( ), mlt_environment( "MLT_NORMALISATION" ), strchr( resource
, '%' ) + 1 );
575 if ( resource
!= NULL
&& ( luma_bitmap
== NULL
|| luma_width
!= width
|| luma_height
!= height
) )
577 uint16_t *orig_bitmap
= mlt_properties_get_data( properties
, "_luma.orig_bitmap", NULL
);
578 luma_width
= mlt_properties_get_int( properties
, "_luma.orig_width" );
579 luma_height
= mlt_properties_get_int( properties
, "_luma.orig_height" );
581 // Load the original luma once
582 if ( orig_bitmap
== NULL
)
584 char *extension
= extension
= strrchr( resource
, '.' );
586 // See if it is a PGM
587 if ( extension
!= NULL
&& strcmp( extension
, ".pgm" ) == 0 )
590 FILE *f
= fopen( resource
, "r" );
594 luma_read_pgm( f
, &orig_bitmap
, &luma_width
, &luma_height
);
597 // Remember the original size for subsequent scaling
598 mlt_properties_set_data( properties
, "_luma.orig_bitmap", orig_bitmap
, luma_width
* luma_height
* 2, mlt_pool_release
, NULL
);
599 mlt_properties_set_int( properties
, "_luma.orig_width", luma_width
);
600 mlt_properties_set_int( properties
, "_luma.orig_height", luma_height
);
605 // Get the factory producer service
606 char *factory
= mlt_properties_get( properties
, "factory" );
608 // Create the producer
609 mlt_producer producer
= mlt_factory_producer( factory
, resource
);
612 if ( producer
!= NULL
)
614 // Get the producer properties
615 mlt_properties producer_properties
= MLT_PRODUCER_PROPERTIES( producer
);
617 // Ensure that we loop
618 mlt_properties_set( producer_properties
, "eof", "loop" );
620 // Now pass all producer. properties on the transition down
621 mlt_properties_pass( producer_properties
, properties
, "luma." );
623 // We will get the alpha frame from the producer
624 mlt_frame luma_frame
= NULL
;
626 // Get the luma frame
627 if ( mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer
), &luma_frame
, 0 ) == 0 )
630 mlt_image_format luma_format
= mlt_image_yuv422
;
632 // Get image from the luma producer
633 mlt_properties_set( MLT_FRAME_PROPERTIES( luma_frame
), "rescale.interp", "none" );
634 mlt_frame_get_image( luma_frame
, &luma_image
, &luma_format
, &luma_width
, &luma_height
, 0 );
636 // Generate the luma map
637 if ( luma_image
!= NULL
&& luma_format
== mlt_image_yuv422
)
638 luma_read_yuv422( luma_image
, &orig_bitmap
, luma_width
, luma_height
);
640 // Remember the original size for subsequent scaling
641 mlt_properties_set_data( properties
, "_luma.orig_bitmap", orig_bitmap
, luma_width
* luma_height
* 2, mlt_pool_release
, NULL
);
642 mlt_properties_set_int( properties
, "_luma.orig_width", luma_width
);
643 mlt_properties_set_int( properties
, "_luma.orig_height", luma_height
);
645 // Cleanup the luma frame
646 mlt_frame_close( luma_frame
);
649 // Cleanup the luma producer
650 mlt_producer_close( producer
);
655 luma_bitmap
= mlt_pool_alloc( width
* height
* sizeof( uint16_t ) );
656 scale_luma( luma_bitmap
, width
, height
, orig_bitmap
, luma_width
, luma_height
, invert
* ( ( 1 << 16 ) - 1 ) );
658 // Remember the scaled luma size to prevent unnecessary scaling
659 mlt_properties_set_int( properties
, "_luma.width", width
);
660 mlt_properties_set_int( properties
, "_luma.height", height
);
661 mlt_properties_set_data( properties
, "_luma.bitmap", luma_bitmap
, width
* height
* 2, mlt_pool_release
, NULL
);
666 /** Get the properly sized image from b_frame.
669 static int get_b_frame_image( mlt_transition
this, mlt_frame b_frame
, uint8_t **image
, int *width
, int *height
, struct geometry_s
*geometry
)
672 mlt_image_format format
= mlt_image_yuv422
;
674 // Get the properties objects
675 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
676 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
678 if ( mlt_properties_get_int( properties
, "distort" ) == 0 && mlt_properties_get_int( b_props
, "distort" ) == 0 && geometry
->item
.distort
== 0 )
680 // Adjust b_frame pixel aspect
681 int normalised_width
= geometry
->item
.w
;
682 int normalised_height
= geometry
->item
.h
;
683 int real_width
= get_value( b_props
, "real_width", "width" );
684 int real_height
= get_value( b_props
, "real_height", "height" );
685 double input_ar
= mlt_frame_get_aspect_ratio( b_frame
);
686 double output_ar
= mlt_properties_get_double( b_props
, "consumer_aspect_ratio" );
687 int scaled_width
= input_ar
/ output_ar
* real_width
;
688 int scaled_height
= real_height
;
690 // Now ensure that our images fit in the normalised frame
691 if ( scaled_width
> normalised_width
)
693 scaled_height
= scaled_height
* normalised_width
/ scaled_width
;
694 scaled_width
= normalised_width
;
696 if ( scaled_height
> normalised_height
)
698 scaled_width
= scaled_width
* normalised_height
/ scaled_height
;
699 scaled_height
= normalised_height
;
702 // Honour the fill request - this will scale the image to fill width or height while maintaining a/r
703 // ????: Shouln't this be the default behaviour?
704 if ( mlt_properties_get_int( properties
, "fill" ) )
706 if ( scaled_height
< normalised_height
&& scaled_width
* normalised_height
/ scaled_height
< normalised_width
)
708 scaled_width
= scaled_width
* normalised_height
/ scaled_height
;
709 scaled_height
= normalised_height
;
711 else if ( scaled_width
< normalised_width
&& scaled_height
* normalised_width
/ scaled_width
< normalised_height
)
713 scaled_height
= scaled_height
* normalised_width
/ scaled_width
;
714 scaled_width
= normalised_width
;
718 // Save the new scaled dimensions
719 geometry
->sw
= scaled_width
;
720 geometry
->sh
= scaled_height
;
724 geometry
->sw
= geometry
->item
.w
;
725 geometry
->sh
= geometry
->item
.h
;
728 // We want to ensure that we bypass resize now...
729 mlt_properties_set_int( b_props
, "distort", 1 );
731 // Take into consideration alignment for optimisation
732 if ( !mlt_properties_get_int( properties
, "titles" ) )
733 alignment_calculate( geometry
);
735 // Adjust to consumer scale
736 *width
= geometry
->sw
* *width
/ geometry
->nw
;
737 *height
= geometry
->sh
* *height
/ geometry
->nh
;
739 ret
= mlt_frame_get_image( b_frame
, image
, &format
, width
, height
, 1 );
745 static mlt_geometry
composite_calculate( mlt_transition
this, struct geometry_s
*result
, mlt_frame a_frame
, float position
)
747 // Get the properties from the transition
748 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
750 // Get the properties from the frame
751 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
753 // Structures for geometry
754 mlt_geometry start
= mlt_properties_get_data( properties
, "geometries", NULL
);
756 // Obtain the normalised width and height from the a_frame
757 int normalised_width
= mlt_properties_get_int( a_props
, "normalised_width" );
758 int normalised_height
= mlt_properties_get_int( a_props
, "normalised_height" );
760 // Now parse the geometries
763 // Parse the transitions properties
764 start
= transition_parse_keys( this, normalised_width
, normalised_height
);
766 // Assign to properties to ensure we get destroyed
767 mlt_properties_set_data( properties
, "geometries", start
, 0, ( mlt_destructor
)mlt_geometry_close
, NULL
);
771 int length
= mlt_transition_get_out( this ) - mlt_transition_get_in( this ) + 1;
772 double cycle
= mlt_properties_get_double( properties
, "cycle" );
775 else if ( cycle
> 0 )
777 mlt_geometry_refresh( start
, mlt_properties_get( properties
, "geometry" ), length
, normalised_width
, normalised_height
);
780 // Do the calculation
781 geometry_calculate( this, result
, position
);
783 // Assign normalised info
784 result
->nw
= normalised_width
;
785 result
->nh
= normalised_height
;
787 // Now parse the alignment
788 result
->halign
= alignment_parse( mlt_properties_get( properties
, "halign" ) );
789 result
->valign
= alignment_parse( mlt_properties_get( properties
, "valign" ) );
794 static inline void inline_memcpy( uint8_t *dest
, uint8_t *src
, int length
)
796 uint8_t *end
= src
+ length
;
804 mlt_frame
composite_copy_region( mlt_transition
this, mlt_frame a_frame
, mlt_position frame_position
)
806 // Create a frame to return
807 mlt_frame b_frame
= mlt_frame_init( );
809 // Get the properties of the a frame
810 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
812 // Get the properties of the b frame
813 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
816 int position
= position_calculate( this, frame_position
);
819 uint8_t *dest
= NULL
;
821 // Get the image and dimensions
822 uint8_t *image
= mlt_properties_get_data( a_props
, "image", NULL
);
823 int width
= mlt_properties_get_int( a_props
, "width" );
824 int height
= mlt_properties_get_int( a_props
, "height" );
826 // Pointers for copy operation
838 // Will need to know region to copy
839 struct geometry_s result
;
841 float delta
= delta_calculate( this, a_frame
);
843 // Calculate the region now
844 composite_calculate( this, &result
, a_frame
, position
+ delta
/ 2 );
846 // Need to scale down to actual dimensions
847 x
= rint( 0.5 + result
.item
.x
* width
/ result
.nw
);
848 y
= rint( 0.5 + result
.item
.y
* height
/ result
.nh
);
849 w
= rint( 0.5 + result
.item
.w
* width
/ result
.nw
);
850 h
= rint( 0.5 + result
.item
.h
* height
/ result
.nh
);
852 // Make sure that x and w are even
868 // Now we need to create a new destination image
869 dest
= mlt_pool_alloc( w
* h
* 2 );
871 // Assign to the new frame
872 mlt_properties_set_data( b_props
, "image", dest
, w
* h
* 2, mlt_pool_release
, NULL
);
873 mlt_properties_set_int( b_props
, "width", w
);
874 mlt_properties_set_int( b_props
, "height", h
);
883 if ( y
+ h
> height
)
884 h
-= ( y
+ h
- height
);
893 if ( w
> 0 && h
> 0 )
895 // Copy the region of the image
896 p
= image
+ y
* ss
+ x
* 2;
900 inline_memcpy( dest
, p
, w
* 2 );
906 // Assign this position to the b frame
907 mlt_frame_set_position( b_frame
, frame_position
);
908 mlt_properties_set_int( b_props
, "distort", 1 );
917 static int transition_get_image( mlt_frame a_frame
, uint8_t **image
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
919 // Get the b frame from the stack
920 mlt_frame b_frame
= mlt_frame_pop_frame( a_frame
);
922 // Get the transition from the a frame
923 mlt_transition
this = mlt_frame_pop_service( a_frame
);
926 int out
= mlt_frame_pop_service_int( a_frame
);
927 int in
= mlt_frame_pop_service_int( a_frame
);
929 // Get the properties from the transition
930 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
932 // TODO: clean up always_active behaviour
933 if ( mlt_properties_get_int( properties
, "always_active" ) )
935 mlt_events_block( properties
, properties
);
936 mlt_properties_set_int( properties
, "in", in
);
937 mlt_properties_set_int( properties
, "out", out
);
938 mlt_events_unblock( properties
, properties
);
941 // This compositer is yuv422 only
942 *format
= mlt_image_yuv422
;
944 if ( b_frame
!= NULL
)
946 // Get the properties of the a frame
947 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
949 // Get the properties of the b frame
950 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
952 // Structures for geometry
953 struct geometry_s result
;
955 // Calculate the position
956 float position
= mlt_properties_get_double( b_props
, "relative_position" );
957 float delta
= delta_calculate( this, a_frame
);
959 // Get the image from the b frame
960 uint8_t *image_b
= NULL
;
961 int width_b
= *width
;
962 int height_b
= *height
;
964 // Do the calculation
965 composite_calculate( this, &result
, a_frame
, position
);
967 // Since we are the consumer of the b_frame, we must pass along these
968 // consumer properties from the a_frame
969 mlt_properties_set_double( b_props
, "consumer_deinterlace", mlt_properties_get_double( a_props
, "consumer_deinterlace" ) );
970 mlt_properties_set_double( b_props
, "consumer_aspect_ratio", mlt_properties_get_double( a_props
, "consumer_aspect_ratio" ) );
971 mlt_properties_set_int( b_props
, "normalised_width", mlt_properties_get_double( a_props
, "normalised_width" ) );
972 mlt_properties_set_int( b_props
, "normalised_height", mlt_properties_get_double( a_props
, "normalised_height" ) );
974 // TODO: Dangerous/temporary optimisation - if nothing to do, then do nothing
975 if ( mlt_properties_get_int( properties
, "no_alpha" ) &&
976 result
.item
.x
== 0 && result
.item
.y
== 0 && result
.item
.w
== *width
&& result
.item
.h
== *height
&& result
.item
.mix
== 100 )
978 mlt_frame_get_image( b_frame
, image
, format
, width
, height
, 1 );
979 if ( !mlt_frame_is_test_card( a_frame
) )
980 mlt_frame_replace_image( a_frame
, *image
, *format
, *width
, *height
);
984 // Get the image from the a frame
985 mlt_frame_get_image( a_frame
, image
, format
, width
, height
, 1 );
987 // Optimisation - no compositing required
988 if ( result
.item
.mix
== 0 || ( result
.item
.w
== 0 && result
.item
.h
== 0 ) )
991 // Need to keep the width/height of the a_frame on the b_frame for titling
992 if ( mlt_properties_get( a_props
, "dest_width" ) == NULL
)
994 mlt_properties_set_int( a_props
, "dest_width", *width
);
995 mlt_properties_set_int( a_props
, "dest_height", *height
);
996 mlt_properties_set_int( b_props
, "dest_width", *width
);
997 mlt_properties_set_int( b_props
, "dest_height", *height
);
1001 mlt_properties_set_int( b_props
, "dest_width", mlt_properties_get_int( a_props
, "dest_width" ) );
1002 mlt_properties_set_int( b_props
, "dest_height", mlt_properties_get_int( a_props
, "dest_height" ) );
1005 // Special case for titling...
1006 if ( mlt_properties_get_int( properties
, "titles" ) )
1008 if ( mlt_properties_get( b_props
, "rescale.interp" ) == NULL
)
1009 mlt_properties_set( b_props
, "rescale.interp", "hyper" );
1010 width_b
= mlt_properties_get_int( a_props
, "dest_width" );
1011 height_b
= mlt_properties_get_int( a_props
, "dest_height" );
1014 if ( get_b_frame_image( this, b_frame
, &image_b
, &width_b
, &height_b
, &result
) == 0 )
1016 uint8_t *dest
= *image
;
1017 uint8_t *src
= image_b
;
1018 uint8_t *alpha
= mlt_frame_get_alpha_mask( b_frame
);
1020 mlt_properties_get_int( a_props
, "consumer_deinterlace" ) ||
1021 mlt_properties_get_int( properties
, "progressive" );
1024 int32_t luma_softness
= mlt_properties_get_double( properties
, "softness" ) * ( 1 << 16 );
1025 uint16_t *luma_bitmap
= get_luma( properties
, width_b
, height_b
);
1026 //composite_line_fn line_fn = mlt_properties_get_int( properties, "_MMX" ) ? composite_line_yuv_mmx : NULL;
1027 composite_line_fn line_fn
= NULL
;
1029 for ( field
= 0; field
< ( progressive ?
1 : 2 ); field
++ )
1031 // Assume lower field (0) first
1032 float field_position
= position
+ field
* delta
;
1034 // Do the calculation if we need to
1035 composite_calculate( this, &result
, a_frame
, field_position
);
1037 if ( mlt_properties_get_int( properties
, "titles" ) )
1039 result
.item
.w
= *width
* ( result
.item
.w
/ result
.nw
);
1040 result
.nw
= result
.item
.w
;
1041 result
.item
.h
= *height
* ( result
.item
.h
/ result
.nh
);
1042 result
.nh
= *height
;
1043 result
.sw
= width_b
;
1044 result
.sh
= height_b
;
1048 alignment_calculate( &result
);
1050 // Composite the b_frame on the a_frame
1051 composite_yuv( dest
, *width
, *height
, src
, width_b
, height_b
, alpha
, result
, progressive ?
-1 : field
, luma_bitmap
, luma_softness
, line_fn
);
1057 mlt_frame_get_image( a_frame
, image
, format
, width
, height
, 1 );
1063 /** Composition transition processing.
1066 static mlt_frame
composite_process( mlt_transition
this, mlt_frame a_frame
, mlt_frame b_frame
)
1068 // Get a unique name to store the frame position
1069 char *name
= mlt_properties_get( MLT_TRANSITION_PROPERTIES( this ), "_unique_id" );
1071 // UGH - this is a TODO - find a more reliable means of obtaining in/out for the always_active case
1072 if ( mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "always_active" ) == 0 )
1074 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "in" ) );
1075 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "out" ) );
1077 // Assign the current position to the name
1078 mlt_properties_set_position( MLT_FRAME_PROPERTIES( a_frame
), name
, mlt_frame_get_position( a_frame
) );
1080 // Propogate the transition properties to the b frame
1081 mlt_properties_set_double( MLT_FRAME_PROPERTIES( b_frame
), "relative_position", position_calculate( this, mlt_frame_get_position( a_frame
) ) );
1085 mlt_properties props
= mlt_properties_get_data( MLT_FRAME_PROPERTIES( b_frame
), "_producer", NULL
);
1086 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( props
, "in" ) );
1087 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( props
, "out" ) );
1088 mlt_properties_set_int( MLT_FRAME_PROPERTIES( b_frame
), "relative_position", mlt_properties_get_int( props
, "_frame" ) );
1090 // Assign the current position to the name
1091 mlt_properties_set_position( MLT_FRAME_PROPERTIES( a_frame
), name
, mlt_properties_get_position( MLT_FRAME_PROPERTIES( b_frame
), "relative_position" ) );
1094 mlt_frame_push_service( a_frame
, this );
1095 mlt_frame_push_frame( a_frame
, b_frame
);
1096 mlt_frame_push_get_image( a_frame
, transition_get_image
);
1100 /** Constructor for the filter.
1103 mlt_transition
transition_composite_init( char *arg
)
1105 mlt_transition
this = calloc( sizeof( struct mlt_transition_s
), 1 );
1106 if ( this != NULL
&& mlt_transition_init( this, NULL
) == 0 )
1108 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
1110 this->process
= composite_process
;
1112 // Default starting motion and zoom
1113 mlt_properties_set( properties
, "start", arg
!= NULL ? arg
: "0,0:100%x100%" );
1116 mlt_properties_set( properties
, "factory", "fezzik" );
1118 // Inform apps and framework that this is a video only transition
1119 mlt_properties_set_int( properties
, "_transition_type", 1 );
1122 //mlt_properties_set_int( properties, "_MMX", composite_have_mmx() );