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
, uint8_t *full_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
, uint8_t *full_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;
398 if ( full_alpha
&& *full_alpha
== 0 ) { *full_alpha
= a
; }
403 /** Composite function.
406 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
, uint8_t *full_alpha
, struct geometry_s geometry
, int field
, uint16_t *p_luma
, int32_t softness
, composite_line_fn line_fn
)
410 int x_src
= 0, y_src
= 0;
411 int32_t weight
= ( 1 << 16 ) * ( geometry
.item
.mix
/ 100 );
412 int step
= ( field
> -1 ) ?
2 : 1;
414 int stride_src
= width_src
* bpp
;
415 int stride_dest
= width_dest
* bpp
;
417 // Adjust to consumer scale
418 int x
= rint( 0.5 + geometry
.item
.x
* width_dest
/ geometry
.nw
);
419 int y
= rint( 0.5 + geometry
.item
.y
* height_dest
/ geometry
.nh
);
420 int x_uneven
= x
& 1;
422 // optimization points - no work to do
423 if ( width_src
<= 0 || height_src
<= 0 )
426 if ( ( x
< 0 && -x
>= width_src
) || ( y
< 0 && -y
>= height_src
) )
429 // crop overlay off the left edge of frame
437 // crop overlay beyond right edge of frame
438 if ( x
+ width_src
> width_dest
)
439 width_src
= width_dest
- x
;
441 // crop overlay off the top edge of the frame
449 // crop overlay below bottom edge of frame
450 if ( y
+ height_src
> height_dest
)
451 height_src
= height_dest
- y
;
453 // offset pointer into overlay buffer based on cropping
454 p_src
+= x_src
* bpp
+ y_src
* stride_src
;
456 // offset pointer into frame buffer based upon positive coordinates only!
457 p_dest
+= ( x
< 0 ?
0 : x
) * bpp
+ ( y
< 0 ?
0 : y
) * stride_dest
;
459 // offset pointer into alpha channel based upon cropping
461 p_alpha
+= x_src
+ y_src
* stride_src
/ bpp
;
464 full_alpha
+= x
+ y
* stride_dest
/ bpp
;
466 // offset pointer into luma channel based upon cropping
468 p_luma
+= x_src
+ y_src
* stride_src
/ bpp
;
470 // Assuming lower field first
471 // Special care is taken to make sure the b_frame is aligned to the correct field.
472 // field 0 = lower field and y should be odd (y is 0-based).
473 // field 1 = upper field and y should be even.
474 if ( ( field
> -1 ) && ( y
% 2 == field
) )
476 if ( ( field
== 1 && y
< height_dest
- 1 ) || ( field
== 0 && y
== 0 ) )
477 p_dest
+= stride_dest
;
479 p_dest
-= stride_dest
;
482 // On the second field, use the other lines from b_frame
487 p_alpha
+= stride_src
/ bpp
;
489 full_alpha
+= stride_dest
/ bpp
;
495 int alpha_stride
= stride_src
/ bpp
;
496 int full_alpha_stride
= stride_dest
/ bpp
;
498 // Make sure than x and w are even
506 // now do the compositing only to cropped extents
507 if ( line_fn
!= NULL
)
509 for ( i
= 0; i
< height_src
; i
+= step
)
511 line_fn( p_dest
, p_src
, width_src
, p_alpha
, full_alpha
, weight
, p_luma
, softness
);
514 p_dest
+= stride_dest
;
516 p_alpha
+= alpha_stride
;
518 full_alpha
+= full_alpha_stride
;
520 p_luma
+= alpha_stride
;
525 for ( i
= 0; i
< height_src
; i
+= step
)
527 composite_line_yuv( p_dest
, p_src
, width_src
, p_alpha
, full_alpha
, weight
, p_luma
, softness
);
530 p_dest
+= stride_dest
;
532 p_alpha
+= alpha_stride
;
534 full_alpha
+= full_alpha_stride
;
536 p_luma
+= alpha_stride
;
544 /** Scale 16bit greyscale luma map using nearest neighbor.
548 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
)
551 register int x_step
= ( src_width
<< 16 ) / dest_width
;
552 register int y_step
= ( src_height
<< 16 ) / dest_height
;
553 register int x
, y
= 0;
555 for ( i
= 0; i
< dest_height
; i
++ )
557 const uint16_t *src
= src_buf
+ ( y
>> 16 ) * src_width
;
560 for ( j
= 0; j
< dest_width
; j
++ )
562 *dest_buf
++ = src
[ x
>> 16 ] ^ invert
;
569 static uint16_t* get_luma( mlt_properties properties
, int width
, int height
)
571 // The cached luma map information
572 int luma_width
= mlt_properties_get_int( properties
, "_luma.width" );
573 int luma_height
= mlt_properties_get_int( properties
, "_luma.height" );
574 uint16_t *luma_bitmap
= mlt_properties_get_data( properties
, "_luma.bitmap", NULL
);
575 int invert
= mlt_properties_get_int( properties
, "luma_invert" );
577 // If the filename property changed, reload the map
578 char *resource
= mlt_properties_get( properties
, "luma" );
582 if ( luma_width
== 0 || luma_height
== 0 )
585 luma_height
= height
;
588 if ( resource
!= NULL
&& strchr( resource
, '%' ) )
590 // TODO: Clean up quick and dirty compressed/existence check
592 sprintf( temp
, "%s/lumas/%s/%s", mlt_factory_prefix( ), mlt_environment( "MLT_NORMALISATION" ), strchr( resource
, '%' ) + 1 );
593 test
= fopen( temp
, "r" );
595 strcat( temp
, ".png" );
601 if ( resource
!= NULL
&& ( luma_bitmap
== NULL
|| luma_width
!= width
|| luma_height
!= height
) )
603 uint16_t *orig_bitmap
= mlt_properties_get_data( properties
, "_luma.orig_bitmap", NULL
);
604 luma_width
= mlt_properties_get_int( properties
, "_luma.orig_width" );
605 luma_height
= mlt_properties_get_int( properties
, "_luma.orig_height" );
607 // Load the original luma once
608 if ( orig_bitmap
== NULL
)
610 char *extension
= strrchr( resource
, '.' );
612 // See if it is a PGM
613 if ( extension
!= NULL
&& strcmp( extension
, ".pgm" ) == 0 )
616 FILE *f
= fopen( resource
, "r" );
620 luma_read_pgm( f
, &orig_bitmap
, &luma_width
, &luma_height
);
623 // Remember the original size for subsequent scaling
624 mlt_properties_set_data( properties
, "_luma.orig_bitmap", orig_bitmap
, luma_width
* luma_height
* 2, mlt_pool_release
, NULL
);
625 mlt_properties_set_int( properties
, "_luma.orig_width", luma_width
);
626 mlt_properties_set_int( properties
, "_luma.orig_height", luma_height
);
631 // Get the factory producer service
632 char *factory
= mlt_properties_get( properties
, "factory" );
634 // Create the producer
635 mlt_producer producer
= mlt_factory_producer( factory
, resource
);
638 if ( producer
!= NULL
)
640 // Get the producer properties
641 mlt_properties producer_properties
= MLT_PRODUCER_PROPERTIES( producer
);
643 // Ensure that we loop
644 mlt_properties_set( producer_properties
, "eof", "loop" );
646 // Now pass all producer. properties on the transition down
647 mlt_properties_pass( producer_properties
, properties
, "luma." );
649 // We will get the alpha frame from the producer
650 mlt_frame luma_frame
= NULL
;
652 // Get the luma frame
653 if ( mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer
), &luma_frame
, 0 ) == 0 )
656 mlt_image_format luma_format
= mlt_image_yuv422
;
658 // Get image from the luma producer
659 mlt_properties_set( MLT_FRAME_PROPERTIES( luma_frame
), "rescale.interp", "none" );
660 mlt_frame_get_image( luma_frame
, &luma_image
, &luma_format
, &luma_width
, &luma_height
, 0 );
662 // Generate the luma map
663 if ( luma_image
!= NULL
&& luma_format
== mlt_image_yuv422
)
664 luma_read_yuv422( luma_image
, &orig_bitmap
, luma_width
, luma_height
);
666 // Remember the original size for subsequent scaling
667 mlt_properties_set_data( properties
, "_luma.orig_bitmap", orig_bitmap
, luma_width
* luma_height
* 2, mlt_pool_release
, NULL
);
668 mlt_properties_set_int( properties
, "_luma.orig_width", luma_width
);
669 mlt_properties_set_int( properties
, "_luma.orig_height", luma_height
);
671 // Cleanup the luma frame
672 mlt_frame_close( luma_frame
);
675 // Cleanup the luma producer
676 mlt_producer_close( producer
);
681 luma_bitmap
= mlt_pool_alloc( width
* height
* sizeof( uint16_t ) );
682 scale_luma( luma_bitmap
, width
, height
, orig_bitmap
, luma_width
, luma_height
, invert
* ( ( 1 << 16 ) - 1 ) );
684 // Remember the scaled luma size to prevent unnecessary scaling
685 mlt_properties_set_int( properties
, "_luma.width", width
);
686 mlt_properties_set_int( properties
, "_luma.height", height
);
687 mlt_properties_set_data( properties
, "_luma.bitmap", luma_bitmap
, width
* height
* 2, mlt_pool_release
, NULL
);
692 /** Get the properly sized image from b_frame.
695 static int get_b_frame_image( mlt_transition
this, mlt_frame b_frame
, uint8_t **image
, int *width
, int *height
, struct geometry_s
*geometry
)
698 mlt_image_format format
= mlt_image_yuv422
;
700 // Get the properties objects
701 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
702 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
704 if ( mlt_properties_get_int( properties
, "distort" ) == 0 && mlt_properties_get_int( b_props
, "distort" ) == 0 && geometry
->item
.distort
== 0 )
706 // Adjust b_frame pixel aspect
707 int normalised_width
= geometry
->item
.w
;
708 int normalised_height
= geometry
->item
.h
;
709 int real_width
= get_value( b_props
, "real_width", "width" );
710 int real_height
= get_value( b_props
, "real_height", "height" );
711 double input_ar
= mlt_frame_get_aspect_ratio( b_frame
);
712 double output_ar
= mlt_properties_get_double( b_props
, "consumer_aspect_ratio" );
713 int scaled_width
= input_ar
/ output_ar
* real_width
;
714 int scaled_height
= real_height
;
716 // Now ensure that our images fit in the normalised frame
717 if ( scaled_width
> normalised_width
)
719 scaled_height
= scaled_height
* normalised_width
/ scaled_width
;
720 scaled_width
= normalised_width
;
722 if ( scaled_height
> normalised_height
)
724 scaled_width
= scaled_width
* normalised_height
/ scaled_height
;
725 scaled_height
= normalised_height
;
728 // Honour the fill request - this will scale the image to fill width or height while maintaining a/r
729 // ????: Shouln't this be the default behaviour?
730 if ( mlt_properties_get_int( properties
, "fill" ) )
732 if ( scaled_height
< normalised_height
&& scaled_width
* normalised_height
/ scaled_height
< normalised_width
)
734 scaled_width
= scaled_width
* normalised_height
/ scaled_height
;
735 scaled_height
= normalised_height
;
737 else if ( scaled_width
< normalised_width
&& scaled_height
* normalised_width
/ scaled_width
< normalised_height
)
739 scaled_height
= scaled_height
* normalised_width
/ scaled_width
;
740 scaled_width
= normalised_width
;
744 // Save the new scaled dimensions
745 geometry
->sw
= scaled_width
;
746 geometry
->sh
= scaled_height
;
750 geometry
->sw
= geometry
->item
.w
;
751 geometry
->sh
= geometry
->item
.h
;
754 // We want to ensure that we bypass resize now...
755 mlt_properties_set_int( b_props
, "distort", 1 );
757 // Take into consideration alignment for optimisation
758 if ( !mlt_properties_get_int( properties
, "titles" ) )
759 alignment_calculate( geometry
);
761 // Adjust to consumer scale
762 *width
= geometry
->sw
* *width
/ geometry
->nw
;
763 *height
= geometry
->sh
* *height
/ geometry
->nh
;
765 ret
= mlt_frame_get_image( b_frame
, image
, &format
, width
, height
, 1 );
767 return ret
&& image
!= NULL
;
771 static mlt_geometry
composite_calculate( mlt_transition
this, struct geometry_s
*result
, mlt_frame a_frame
, float position
)
773 // Get the properties from the transition
774 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
776 // Get the properties from the frame
777 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
779 // Structures for geometry
780 mlt_geometry start
= mlt_properties_get_data( properties
, "geometries", NULL
);
782 // Obtain the normalised width and height from the a_frame
783 int normalised_width
= mlt_properties_get_int( a_props
, "normalised_width" );
784 int normalised_height
= mlt_properties_get_int( a_props
, "normalised_height" );
786 // Now parse the geometries
789 // Parse the transitions properties
790 start
= transition_parse_keys( this, normalised_width
, normalised_height
);
792 // Assign to properties to ensure we get destroyed
793 mlt_properties_set_data( properties
, "geometries", start
, 0, ( mlt_destructor
)mlt_geometry_close
, NULL
);
797 int length
= mlt_transition_get_out( this ) - mlt_transition_get_in( this ) + 1;
798 double cycle
= mlt_properties_get_double( properties
, "cycle" );
801 else if ( cycle
> 0 )
803 mlt_geometry_refresh( start
, mlt_properties_get( properties
, "geometry" ), length
, normalised_width
, normalised_height
);
806 // Do the calculation
807 geometry_calculate( this, result
, position
);
809 // Assign normalised info
810 result
->nw
= normalised_width
;
811 result
->nh
= normalised_height
;
813 // Now parse the alignment
814 result
->halign
= alignment_parse( mlt_properties_get( properties
, "halign" ) );
815 result
->valign
= alignment_parse( mlt_properties_get( properties
, "valign" ) );
820 static inline void inline_memcpy( uint8_t *dest
, uint8_t *src
, int length
)
822 uint8_t *end
= src
+ length
;
830 mlt_frame
composite_copy_region( mlt_transition
this, mlt_frame a_frame
, mlt_position frame_position
)
832 // Create a frame to return
833 mlt_frame b_frame
= mlt_frame_init( );
835 // Get the properties of the a frame
836 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
838 // Get the properties of the b frame
839 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
842 int position
= position_calculate( this, frame_position
);
845 uint8_t *dest
= NULL
;
847 // Get the image and dimensions
848 uint8_t *image
= mlt_properties_get_data( a_props
, "image", NULL
);
849 int width
= mlt_properties_get_int( a_props
, "width" );
850 int height
= mlt_properties_get_int( a_props
, "height" );
852 // Pointers for copy operation
864 // Will need to know region to copy
865 struct geometry_s result
;
867 float delta
= delta_calculate( this, a_frame
);
869 // Calculate the region now
870 composite_calculate( this, &result
, a_frame
, position
+ delta
/ 2 );
872 // Need to scale down to actual dimensions
873 x
= rint( 0.5 + result
.item
.x
* width
/ result
.nw
);
874 y
= rint( 0.5 + result
.item
.y
* height
/ result
.nh
);
875 w
= rint( 0.5 + result
.item
.w
* width
/ result
.nw
);
876 h
= rint( 0.5 + result
.item
.h
* height
/ result
.nh
);
878 // Make sure that x and w are even
894 // Now we need to create a new destination image
895 dest
= mlt_pool_alloc( w
* h
* 2 );
897 // Assign to the new frame
898 mlt_properties_set_data( b_props
, "image", dest
, w
* h
* 2, mlt_pool_release
, NULL
);
899 mlt_properties_set_int( b_props
, "width", w
);
900 mlt_properties_set_int( b_props
, "height", h
);
909 if ( y
+ h
> height
)
910 h
-= ( y
+ h
- height
);
919 if ( w
> 0 && h
> 0 )
921 // Copy the region of the image
922 p
= image
+ y
* ss
+ x
* 2;
926 inline_memcpy( dest
, p
, w
* 2 );
932 // Assign this position to the b frame
933 mlt_frame_set_position( b_frame
, frame_position
);
934 mlt_properties_set_int( b_props
, "distort", 1 );
943 static int transition_get_image( mlt_frame a_frame
, uint8_t **image
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
945 // Get the b frame from the stack
946 mlt_frame b_frame
= mlt_frame_pop_frame( a_frame
);
948 // Get the transition from the a frame
949 mlt_transition
this = mlt_frame_pop_service( a_frame
);
952 int out
= mlt_frame_pop_service_int( a_frame
);
953 int in
= mlt_frame_pop_service_int( a_frame
);
955 // Get the properties from the transition
956 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
958 // TODO: clean up always_active behaviour
959 if ( mlt_properties_get_int( properties
, "always_active" ) )
961 mlt_events_block( properties
, properties
);
962 mlt_properties_set_int( properties
, "in", in
);
963 mlt_properties_set_int( properties
, "out", out
);
964 mlt_events_unblock( properties
, properties
);
967 // This compositer is yuv422 only
968 *format
= mlt_image_yuv422
;
970 if ( b_frame
!= NULL
)
972 // Get the properties of the a frame
973 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
975 // Get the properties of the b frame
976 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
978 // Structures for geometry
979 struct geometry_s result
;
981 // Calculate the position
982 float position
= mlt_properties_get_double( b_props
, "relative_position" );
983 float delta
= delta_calculate( this, a_frame
);
985 // Get the image from the b frame
986 uint8_t *image_b
= NULL
;
987 int width_b
= *width
;
988 int height_b
= *height
;
990 // Do the calculation
991 composite_calculate( this, &result
, a_frame
, position
);
993 // Since we are the consumer of the b_frame, we must pass along these
994 // consumer properties from the a_frame
995 mlt_properties_set_double( b_props
, "consumer_deinterlace", mlt_properties_get_double( a_props
, "consumer_deinterlace" ) );
996 mlt_properties_set_double( b_props
, "consumer_aspect_ratio", mlt_properties_get_double( a_props
, "consumer_aspect_ratio" ) );
997 mlt_properties_set_int( b_props
, "normalised_width", mlt_properties_get_double( a_props
, "normalised_width" ) );
998 mlt_properties_set_int( b_props
, "normalised_height", mlt_properties_get_double( a_props
, "normalised_height" ) );
1000 // TODO: Dangerous/temporary optimisation - if nothing to do, then do nothing
1001 if ( mlt_properties_get_int( properties
, "no_alpha" ) &&
1002 result
.item
.x
== 0 && result
.item
.y
== 0 && result
.item
.w
== *width
&& result
.item
.h
== *height
&& result
.item
.mix
== 100 )
1004 mlt_frame_get_image( b_frame
, image
, format
, width
, height
, 1 );
1005 if ( !mlt_frame_is_test_card( a_frame
) )
1006 mlt_frame_replace_image( a_frame
, *image
, *format
, *width
, *height
);
1010 // Get the image from the a frame
1011 mlt_frame_get_image( a_frame
, image
, format
, width
, height
, 1 );
1013 // Optimisation - no compositing required
1014 if ( result
.item
.mix
== 0 || ( result
.item
.w
== 0 && result
.item
.h
== 0 ) )
1017 // Need to keep the width/height of the a_frame on the b_frame for titling
1018 if ( mlt_properties_get( a_props
, "dest_width" ) == NULL
)
1020 mlt_properties_set_int( a_props
, "dest_width", *width
);
1021 mlt_properties_set_int( a_props
, "dest_height", *height
);
1022 mlt_properties_set_int( b_props
, "dest_width", *width
);
1023 mlt_properties_set_int( b_props
, "dest_height", *height
);
1027 mlt_properties_set_int( b_props
, "dest_width", mlt_properties_get_int( a_props
, "dest_width" ) );
1028 mlt_properties_set_int( b_props
, "dest_height", mlt_properties_get_int( a_props
, "dest_height" ) );
1031 // Special case for titling...
1032 if ( mlt_properties_get_int( properties
, "titles" ) )
1034 if ( mlt_properties_get( b_props
, "rescale.interp" ) == NULL
)
1035 mlt_properties_set( b_props
, "rescale.interp", "hyper" );
1036 width_b
= mlt_properties_get_int( a_props
, "dest_width" );
1037 height_b
= mlt_properties_get_int( a_props
, "dest_height" );
1040 if ( get_b_frame_image( this, b_frame
, &image_b
, &width_b
, &height_b
, &result
) == 0 )
1042 uint8_t *dest
= *image
;
1043 uint8_t *src
= image_b
;
1044 uint8_t *alpha
= mlt_frame_get_alpha_mask( b_frame
);
1045 uint8_t *full_alpha
= mlt_frame_get_alpha_mask( a_frame
);
1047 mlt_properties_get_int( a_props
, "consumer_deinterlace" ) ||
1048 mlt_properties_get_int( properties
, "progressive" );
1051 int32_t luma_softness
= mlt_properties_get_double( properties
, "softness" ) * ( 1 << 16 );
1052 uint16_t *luma_bitmap
= get_luma( properties
, width_b
, height_b
);
1053 //composite_line_fn line_fn = mlt_properties_get_int( properties, "_MMX" ) ? composite_line_yuv_mmx : NULL;
1054 composite_line_fn line_fn
= NULL
;
1056 if ( full_alpha
== NULL
)
1058 full_alpha
= mlt_pool_alloc( *width
* *height
);
1059 memset( full_alpha
, 255, *width
* *height
);
1060 a_frame
->get_alpha_mask
= NULL
;
1061 mlt_properties_set_data( a_props
, "alpha", full_alpha
, 0, mlt_pool_release
, NULL
);
1064 for ( field
= 0; field
< ( progressive ?
1 : 2 ); field
++ )
1066 // Assume lower field (0) first
1067 float field_position
= position
+ field
* delta
;
1069 // Do the calculation if we need to
1070 composite_calculate( this, &result
, a_frame
, field_position
);
1072 if ( mlt_properties_get_int( properties
, "titles" ) )
1074 result
.item
.w
= *width
* ( result
.item
.w
/ result
.nw
);
1075 result
.nw
= result
.item
.w
;
1076 result
.item
.h
= *height
* ( result
.item
.h
/ result
.nh
);
1077 result
.nh
= *height
;
1078 result
.sw
= width_b
;
1079 result
.sh
= height_b
;
1083 alignment_calculate( &result
);
1085 // Composite the b_frame on the a_frame
1086 composite_yuv( dest
, *width
, *height
, src
, width_b
, height_b
, alpha
, full_alpha
, result
, progressive ?
-1 : field
, luma_bitmap
, luma_softness
, line_fn
);
1092 mlt_frame_get_image( a_frame
, image
, format
, width
, height
, 1 );
1098 /** Composition transition processing.
1101 static mlt_frame
composite_process( mlt_transition
this, mlt_frame a_frame
, mlt_frame b_frame
)
1103 // Get a unique name to store the frame position
1104 char *name
= mlt_properties_get( MLT_TRANSITION_PROPERTIES( this ), "_unique_id" );
1106 // UGH - this is a TODO - find a more reliable means of obtaining in/out for the always_active case
1107 if ( mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "always_active" ) == 0 )
1109 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "in" ) );
1110 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "out" ) );
1112 // Assign the current position to the name
1113 mlt_properties_set_position( MLT_FRAME_PROPERTIES( a_frame
), name
, mlt_frame_get_position( a_frame
) );
1115 // Propogate the transition properties to the b frame
1116 mlt_properties_set_double( MLT_FRAME_PROPERTIES( b_frame
), "relative_position", position_calculate( this, mlt_frame_get_position( a_frame
) ) );
1120 mlt_properties props
= mlt_properties_get_data( MLT_FRAME_PROPERTIES( b_frame
), "_producer", NULL
);
1121 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( props
, "in" ) );
1122 mlt_frame_push_service_int( a_frame
, mlt_properties_get_int( props
, "out" ) );
1123 mlt_properties_set_int( MLT_FRAME_PROPERTIES( b_frame
), "relative_position", mlt_properties_get_int( props
, "_frame" ) - mlt_properties_get_int( props
, "in" ) );
1125 // Assign the current position to the name
1126 mlt_properties_set_position( MLT_FRAME_PROPERTIES( a_frame
), name
, mlt_properties_get_position( MLT_FRAME_PROPERTIES( b_frame
), "relative_position" ) );
1129 mlt_frame_push_service( a_frame
, this );
1130 mlt_frame_push_frame( a_frame
, b_frame
);
1131 mlt_frame_push_get_image( a_frame
, transition_get_image
);
1135 /** Constructor for the filter.
1138 mlt_transition
transition_composite_init( char *arg
)
1140 mlt_transition
this = calloc( sizeof( struct mlt_transition_s
), 1 );
1141 if ( this != NULL
&& mlt_transition_init( this, NULL
) == 0 )
1143 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
1145 this->process
= composite_process
;
1147 // Default starting motion and zoom
1148 mlt_properties_set( properties
, "start", arg
!= NULL ? arg
: "0,0:100%x100%" );
1151 mlt_properties_set( properties
, "factory", "fezzik" );
1153 // Inform apps and framework that this is a video only transition
1154 mlt_properties_set_int( properties
, "_transition_type", 1 );
1157 //mlt_properties_set_int( properties, "_MMX", composite_have_mmx() );