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 length
= mlt_geometry_get_length( geometry
);
80 if ( position
>= length
&& length
!= 0 )
82 int section
= position
/ length
;
83 position
-= section
* length
;
84 if ( section
% 2 == 1 )
85 position
= length
- position
;
88 // Fetch the key for the position
89 mlt_geometry_fetch( geometry
, &output
->item
, position
);
92 static mlt_geometry
transition_parse_keys( mlt_transition
this, int normalised_width
, int normalised_height
)
94 // Loop variable for property interrogation
97 // Get the properties of the transition
98 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
100 // Create an empty geometries object
101 mlt_geometry geometry
= mlt_geometry_init( );
103 // Get the in and out position
104 mlt_position in
= mlt_transition_get_in( this );
105 mlt_position out
= mlt_transition_get_out( this );
106 int length
= out
- in
+ 1;
108 // Get the new style geometry string
109 char *property
= mlt_properties_get( properties
, "geometry" );
111 // Allow a geometry repeat cycle
112 if ( mlt_properties_get_int( properties
, "cycle" ) )
113 length
= mlt_properties_get_int( properties
, "cycle" );
115 // Parse the geometry if we have one
116 mlt_geometry_parse( geometry
, property
, length
, normalised_width
, normalised_height
);
118 // Check if we're using the old style geometry
119 if ( property
== NULL
)
121 // DEPRECATED: Multiple keys for geometry information is inefficient and too rigid for
122 // practical use - while deprecated, it has been slightly extended too - keys can now
123 // be specified out of order, and can be blanked or NULL to simulate removal
125 // Structure to use for parsing and inserting
126 struct mlt_geometry_item_s item
;
128 // Parse the start property
130 if ( mlt_geometry_parse_item( geometry
, &item
, mlt_properties_get( properties
, "start" ) ) == 0 )
131 mlt_geometry_insert( geometry
, &item
);
133 // Parse the keys in between
134 for ( i
= 0; i
< mlt_properties_count( properties
); i
++ )
136 // Get the name of the property
137 char *name
= mlt_properties_get_name( properties
, i
);
139 // Check that it's valid
140 if ( !strncmp( name
, "key[", 4 ) )
142 // Get the value of the property
143 char *value
= mlt_properties_get_value( properties
, i
);
145 // Determine the frame number
146 item
.frame
= atoi( name
+ 4 );
148 // Parse and add to the list
149 if ( mlt_geometry_parse_item( geometry
, &item
, value
) == 0 )
150 mlt_geometry_insert( geometry
, &item
);
152 fprintf( stderr
, "Invalid Key - skipping %s = %s\n", name
, value
);
158 if ( mlt_geometry_parse_item( geometry
, &item
, mlt_properties_get( properties
, "end" ) ) == 0 )
159 mlt_geometry_insert( geometry
, &item
);
165 /** Adjust position according to scaled size and alignment properties.
168 static void alignment_calculate( struct geometry_s
*geometry
)
170 geometry
->item
.x
+= ( geometry
->item
.w
- geometry
->sw
) * geometry
->halign
/ 2;
171 geometry
->item
.y
+= ( geometry
->item
.h
- geometry
->sh
) * geometry
->valign
/ 2;
174 /** Calculate the position for this frame.
177 static int position_calculate( mlt_transition
this, mlt_position position
)
179 // Get the in and out position
180 mlt_position in
= mlt_transition_get_in( this );
183 return position
- in
;
186 /** Calculate the field delta for this frame - position between two frames.
189 static inline float delta_calculate( mlt_transition
this, mlt_frame frame
)
191 // Get the in and out position
192 mlt_position in
= mlt_transition_get_in( this );
193 mlt_position out
= mlt_transition_get_out( this );
194 float length
= out
- in
+ 1;
196 // Get the position of the frame
197 char *name
= mlt_properties_get( MLT_TRANSITION_PROPERTIES( this ), "_unique_id" );
198 mlt_position position
= mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame
), name
);
201 float x
= ( float )( position
- in
) / length
;
202 float y
= ( float )( position
+ 1 - in
) / length
;
204 return length
* ( y
- x
) / 2.0;
207 static int get_value( mlt_properties properties
, char *preferred
, char *fallback
)
209 int value
= mlt_properties_get_int( properties
, preferred
);
211 value
= mlt_properties_get_int( properties
, fallback
);
215 /** A linear threshold determination function.
218 static inline int32_t linearstep( int32_t edge1
, int32_t edge2
, int32_t a
)
226 return ( ( a
- edge1
) << 16 ) / ( edge2
- edge1
);
229 /** A smoother, non-linear threshold determination function.
232 static inline int32_t smoothstep( int32_t edge1
, int32_t edge2
, uint32_t a
)
240 a
= ( ( a
- edge1
) << 16 ) / ( edge2
- edge1
);
242 return ( ( ( a
* a
) >> 16 ) * ( ( 3 << 16 ) - ( 2 * a
) ) ) >> 16;
245 /** Load the luma map from PGM stream.
248 static void luma_read_pgm( FILE *f
, uint16_t **map
, int *width
, int *height
)
250 uint8_t *data
= NULL
;
262 // get the magic code
263 if ( fgets( line
, 127, f
) == NULL
)
267 while ( sscanf( line
, " #%s", comment
) > 0 )
268 if ( fgets( line
, 127, f
) == NULL
)
271 if ( line
[0] != 'P' || line
[1] != '5' )
274 // skip white space and see if a new line must be fetched
275 for ( i
= 2; i
< 127 && line
[i
] != '\0' && isspace( line
[i
] ); i
++ );
276 if ( ( line
[i
] == '\0' || line
[i
] == '#' ) && fgets( line
, 127, f
) == NULL
)
280 while ( sscanf( line
, " #%s", comment
) > 0 )
281 if ( fgets( line
, 127, f
) == NULL
)
284 // get the dimensions
285 if ( line
[0] == 'P' )
286 i
= sscanf( line
, "P5 %d %d %d", width
, height
, &maxval
);
288 i
= sscanf( line
, "%d %d %d", width
, height
, &maxval
);
290 // get the height value, if not yet
293 if ( fgets( line
, 127, f
) == NULL
)
297 while ( sscanf( line
, " #%s", comment
) > 0 )
298 if ( fgets( line
, 127, f
) == NULL
)
301 i
= sscanf( line
, "%d", height
);
308 // get the maximum gray value, if not yet
311 if ( fgets( line
, 127, f
) == NULL
)
315 while ( sscanf( line
, " #%s", comment
) > 0 )
316 if ( fgets( line
, 127, f
) == NULL
)
319 i
= sscanf( line
, "%d", &maxval
);
324 // determine if this is one or two bytes per pixel
325 bpp
= maxval
> 255 ?
2 : 1;
327 // allocate temporary storage for the raw data
328 data
= mlt_pool_alloc( *width
* *height
* bpp
);
333 if ( fread( data
, *width
* *height
* bpp
, 1, f
) != 1 )
336 // allocate the luma bitmap
337 *map
= p
= (uint16_t*)mlt_pool_alloc( *width
* *height
* sizeof( uint16_t ) );
341 // proces the raw data into the luma bitmap
342 for ( i
= 0; i
< *width
* *height
* bpp
; i
+= bpp
)
345 *p
++ = data
[ i
] << 8;
347 *p
++ = ( data
[ i
] << 8 ) + data
[ i
+ 1 ];
354 mlt_pool_release( data
);
357 /** Generate a luma map from any YUV image.
360 static void luma_read_yuv422( uint8_t *image
, uint16_t **map
, int width
, int height
)
364 // allocate the luma bitmap
365 uint16_t *p
= *map
= ( uint16_t* )mlt_pool_alloc( width
* height
* sizeof( uint16_t ) );
369 // proces the image data into the luma bitmap
370 for ( i
= 0; i
< width
* height
* 2; i
+= 2 )
371 *p
++ = ( image
[ i
] - 16 ) * 299; // 299 = 65535 / 219
375 /** Composite a source line over a destination line
379 void composite_line_yuv( uint8_t *dest
, uint8_t *src
, int width_src
, uint8_t *alpha
, int weight
, uint16_t *luma
, int softness
)
384 for ( j
= 0; j
< width_src
; j
++ )
386 a
= ( alpha
== NULL
) ?
255 : *alpha
++;
387 mix
= ( luma
== NULL
) ? weight
: linearstep( luma
[ j
], luma
[ j
] + softness
, weight
);
388 mix
= ( mix
* ( a
+ 1 ) ) >> 8;
389 *dest
= ( *src
++ * mix
+ *dest
* ( ( 1 << 16 ) - mix
) ) >> 16;
391 *dest
= ( *src
++ * mix
+ *dest
* ( ( 1 << 16 ) - mix
) ) >> 16;
396 /** Composite function.
399 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
)
403 int x_src
= 0, y_src
= 0;
404 int32_t weight
= ( 1 << 16 ) * ( geometry
.item
.mix
/ 100 );
405 int step
= ( field
> -1 ) ?
2 : 1;
407 int stride_src
= width_src
* bpp
;
408 int stride_dest
= width_dest
* bpp
;
410 // Adjust to consumer scale
411 int x
= rint( 0.5 + geometry
.item
.x
* width_dest
/ geometry
.nw
);
412 int y
= rint( 0.5 + geometry
.item
.y
* height_dest
/ geometry
.nh
);
413 int x_uneven
= x
& 1;
415 // optimization points - no work to do
416 if ( width_src
<= 0 || height_src
<= 0 )
419 if ( ( x
< 0 && -x
>= width_src
) || ( y
< 0 && -y
>= height_src
) )
422 // crop overlay off the left edge of frame
430 // crop overlay beyond right edge of frame
431 if ( x
+ width_src
> width_dest
)
432 width_src
= width_dest
- x
;
434 // crop overlay off the top edge of the frame
442 // crop overlay below bottom edge of frame
443 if ( y
+ height_src
> height_dest
)
444 height_src
= height_dest
- y
;
446 // offset pointer into overlay buffer based on cropping
447 p_src
+= x_src
* bpp
+ y_src
* stride_src
;
449 // offset pointer into frame buffer based upon positive coordinates only!
450 p_dest
+= ( x
< 0 ?
0 : x
) * bpp
+ ( y
< 0 ?
0 : y
) * stride_dest
;
452 // offset pointer into alpha channel based upon cropping
454 p_alpha
+= x_src
+ y_src
* stride_src
/ bpp
;
456 // offset pointer into luma channel based upon cropping
458 p_luma
+= x_src
+ y_src
* stride_src
/ bpp
;
460 // Assuming lower field first
461 // Special care is taken to make sure the b_frame is aligned to the correct field.
462 // field 0 = lower field and y should be odd (y is 0-based).
463 // field 1 = upper field and y should be even.
464 if ( ( field
> -1 ) && ( y
% 2 == field
) )
466 if ( ( field
== 1 && y
< height_dest
- 1 ) || ( field
== 0 && y
== 0 ) )
467 p_dest
+= stride_dest
;
469 p_dest
-= stride_dest
;
472 // On the second field, use the other lines from b_frame
477 p_alpha
+= stride_src
/ bpp
;
483 int alpha_stride
= stride_src
/ bpp
;
485 // Make sure than x and w are even
492 // now do the compositing only to cropped extents
493 if ( line_fn
!= NULL
)
495 for ( i
= 0; i
< height_src
; i
+= step
)
497 line_fn( p_dest
, p_src
, width_src
, p_alpha
, weight
, p_luma
, softness
);
500 p_dest
+= stride_dest
;
502 p_alpha
+= alpha_stride
;
504 p_luma
+= alpha_stride
;
509 for ( i
= 0; i
< height_src
; i
+= step
)
511 composite_line_yuv( p_dest
, p_src
, width_src
, p_alpha
, weight
, p_luma
, softness
);
514 p_dest
+= stride_dest
;
516 p_alpha
+= alpha_stride
;
518 p_luma
+= alpha_stride
;
526 /** Scale 16bit greyscale luma map using nearest neighbor.
530 scale_luma ( uint16_t *dest_buf
, int dest_width
, int dest_height
, const uint16_t *src_buf
, int src_width
, int src_height
)
533 register int x_step
= ( src_width
<< 16 ) / dest_width
;
534 register int y_step
= ( src_height
<< 16 ) / dest_height
;
535 register int x
, y
= 0;
537 for ( i
= 0; i
< dest_height
; i
++ )
539 const uint16_t *src
= src_buf
+ ( y
>> 16 ) * src_width
;
542 for ( j
= 0; j
< dest_width
; j
++ )
544 *dest_buf
++ = src
[ x
>> 16 ];
551 static uint16_t* get_luma( mlt_properties properties
, int width
, int height
)
553 // The cached luma map information
554 int luma_width
= mlt_properties_get_int( properties
, "_luma.width" );
555 int luma_height
= mlt_properties_get_int( properties
, "_luma.height" );
556 uint16_t *luma_bitmap
= mlt_properties_get_data( properties
, "_luma.bitmap", NULL
);
558 // If the filename property changed, reload the map
559 char *resource
= mlt_properties_get( properties
, "luma" );
563 if ( resource
!= NULL
&& strchr( resource
, '%' ) )
565 sprintf( temp
, "%s/lumas/%s/%s", mlt_factory_prefix( ), mlt_environment( "MLT_NORMALISATION" ), strchr( resource
, '%' ) + 1 );
569 if ( resource
!= NULL
&& ( luma_bitmap
== NULL
|| luma_width
!= width
|| luma_height
!= height
) )
571 uint16_t *orig_bitmap
= mlt_properties_get_data( properties
, "_luma.orig_bitmap", NULL
);
572 luma_width
= mlt_properties_get_int( properties
, "_luma.orig_width" );
573 luma_height
= mlt_properties_get_int( properties
, "_luma.orig_height" );
575 // Load the original luma once
576 if ( orig_bitmap
== NULL
)
578 char *extension
= extension
= strrchr( resource
, '.' );
580 // See if it is a PGM
581 if ( extension
!= NULL
&& strcmp( extension
, ".pgm" ) == 0 )
584 FILE *f
= fopen( resource
, "r" );
588 luma_read_pgm( f
, &orig_bitmap
, &luma_width
, &luma_height
);
591 // Remember the original size for subsequent scaling
592 mlt_properties_set_data( properties
, "_luma.orig_bitmap", orig_bitmap
, luma_width
* luma_height
* 2, mlt_pool_release
, NULL
);
593 mlt_properties_set_int( properties
, "_luma.orig_width", luma_width
);
594 mlt_properties_set_int( properties
, "_luma.orig_height", luma_height
);
599 // Get the factory producer service
600 char *factory
= mlt_properties_get( properties
, "factory" );
602 // Create the producer
603 mlt_producer producer
= mlt_factory_producer( factory
, resource
);
606 if ( producer
!= NULL
)
608 // Get the producer properties
609 mlt_properties producer_properties
= MLT_PRODUCER_PROPERTIES( producer
);
611 // Ensure that we loop
612 mlt_properties_set( producer_properties
, "eof", "loop" );
614 // Now pass all producer. properties on the transition down
615 mlt_properties_pass( producer_properties
, properties
, "luma." );
617 // We will get the alpha frame from the producer
618 mlt_frame luma_frame
= NULL
;
620 // Get the luma frame
621 if ( mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer
), &luma_frame
, 0 ) == 0 )
624 mlt_image_format luma_format
= mlt_image_yuv422
;
626 // Get image from the luma producer
627 mlt_properties_set( MLT_FRAME_PROPERTIES( luma_frame
), "rescale.interp", "none" );
628 mlt_frame_get_image( luma_frame
, &luma_image
, &luma_format
, &luma_width
, &luma_height
, 0 );
630 // Generate the luma map
631 if ( luma_image
!= NULL
&& luma_format
== mlt_image_yuv422
)
632 luma_read_yuv422( luma_image
, &orig_bitmap
, luma_width
, luma_height
);
634 // Remember the original size for subsequent scaling
635 mlt_properties_set_data( properties
, "_luma.orig_bitmap", orig_bitmap
, luma_width
* luma_height
* 2, mlt_pool_release
, NULL
);
636 mlt_properties_set_int( properties
, "_luma.orig_width", luma_width
);
637 mlt_properties_set_int( properties
, "_luma.orig_height", luma_height
);
639 // Cleanup the luma frame
640 mlt_frame_close( luma_frame
);
643 // Cleanup the luma producer
644 mlt_producer_close( producer
);
649 luma_bitmap
= mlt_pool_alloc( width
* height
* sizeof( uint16_t ) );
650 scale_luma( luma_bitmap
, width
, height
, orig_bitmap
, luma_width
, luma_height
);
652 // Remember the scaled luma size to prevent unnecessary scaling
653 mlt_properties_set_int( properties
, "_luma.width", width
);
654 mlt_properties_set_int( properties
, "_luma.height", height
);
655 mlt_properties_set_data( properties
, "_luma.bitmap", luma_bitmap
, width
* height
* 2, mlt_pool_release
, NULL
);
660 /** Get the properly sized image from b_frame.
663 static int get_b_frame_image( mlt_transition
this, mlt_frame b_frame
, uint8_t **image
, int *width
, int *height
, struct geometry_s
*geometry
)
666 mlt_image_format format
= mlt_image_yuv422
;
668 // Get the properties objects
669 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
670 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
672 if ( mlt_properties_get_int( properties
, "distort" ) == 0 && mlt_properties_get_int( b_props
, "distort" ) == 0 && geometry
->item
.distort
== 0 )
674 // Adjust b_frame pixel aspect
675 int normalised_width
= geometry
->item
.w
;
676 int normalised_height
= geometry
->item
.h
;
677 int real_width
= get_value( b_props
, "real_width", "width" );
678 int real_height
= get_value( b_props
, "real_height", "height" );
679 double input_ar
= mlt_frame_get_aspect_ratio( b_frame
);
680 double output_ar
= mlt_properties_get_double( b_props
, "consumer_aspect_ratio" );
681 int scaled_width
= input_ar
/ output_ar
* real_width
;
682 int scaled_height
= real_height
;
684 // Now ensure that our images fit in the normalised frame
685 if ( scaled_width
> normalised_width
)
687 scaled_height
= scaled_height
* normalised_width
/ scaled_width
;
688 scaled_width
= normalised_width
;
690 if ( scaled_height
> normalised_height
)
692 scaled_width
= scaled_width
* normalised_height
/ scaled_height
;
693 scaled_height
= normalised_height
;
696 // Honour the fill request - this will scale the image to fill width or height while maintaining a/r
697 // ????: Shouln't this be the default behaviour?
698 if ( mlt_properties_get_int( properties
, "fill" ) )
700 if ( scaled_height
< normalised_height
&& scaled_width
* normalised_height
/ scaled_height
< normalised_width
)
702 scaled_width
= scaled_width
* normalised_height
/ scaled_height
;
703 scaled_height
= normalised_height
;
705 else if ( scaled_width
< normalised_width
&& scaled_height
* normalised_width
/ scaled_width
< normalised_height
)
707 scaled_height
= scaled_height
* normalised_width
/ scaled_width
;
708 scaled_width
= normalised_width
;
712 // Save the new scaled dimensions
713 geometry
->sw
= scaled_width
;
714 geometry
->sh
= scaled_height
;
718 geometry
->sw
= geometry
->item
.w
;
719 geometry
->sh
= geometry
->item
.h
;
722 // We want to ensure that we bypass resize now...
723 mlt_properties_set_int( b_props
, "distort", 1 );
725 // Take into consideration alignment for optimisation
726 if ( !mlt_properties_get_int( properties
, "titles" ) )
727 alignment_calculate( geometry
);
729 // Adjust to consumer scale
730 int x
= geometry
->item
.x
* *width
/ geometry
->nw
;
731 int y
= geometry
->item
.y
* *height
/ geometry
->nh
;
732 *width
= geometry
->sw
* *width
/ geometry
->nw
;
733 *height
= geometry
->sh
* *height
/ geometry
->nh
;
737 // optimization points - no work to do
738 if ( *width
< 1 || *height
< 1 )
741 if ( ( x
< 0 && -x
>= *width
) || ( y
< 0 && -y
>= *height
) )
744 ret
= mlt_frame_get_image( b_frame
, image
, &format
, width
, height
, 1 );
750 static mlt_geometry
composite_calculate( mlt_transition
this, struct geometry_s
*result
, mlt_frame a_frame
, float position
)
752 // Get the properties from the transition
753 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
755 // Get the properties from the frame
756 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
758 // Structures for geometry
759 mlt_geometry start
= mlt_properties_get_data( properties
, "geometries", NULL
);
761 // Obtain the normalised width and height from the a_frame
762 int normalised_width
= mlt_properties_get_int( a_props
, "normalised_width" );
763 int normalised_height
= mlt_properties_get_int( a_props
, "normalised_height" );
765 // Now parse the geometries
768 // Parse the transitions properties
769 start
= transition_parse_keys( this, normalised_width
, normalised_height
);
771 // Assign to properties to ensure we get destroyed
772 mlt_properties_set_data( properties
, "geometries", start
, 0, ( mlt_destructor
)mlt_geometry_close
, NULL
);
776 int length
= mlt_transition_get_out( this ) - mlt_transition_get_in( this ) + 1;
777 if ( mlt_properties_get_int( properties
, "cycle" ) )
778 length
= mlt_properties_get_int( properties
, "cycle" );
779 mlt_geometry_refresh( start
, mlt_properties_get( properties
, "geometry" ), length
, normalised_width
, normalised_height
);
782 // Do the calculation
783 geometry_calculate( this, result
, position
);
785 // Assign normalised info
786 result
->nw
= normalised_width
;
787 result
->nh
= normalised_height
;
789 // Now parse the alignment
790 result
->halign
= alignment_parse( mlt_properties_get( properties
, "halign" ) );
791 result
->valign
= alignment_parse( mlt_properties_get( properties
, "valign" ) );
796 static inline void inline_memcpy( uint8_t *dest
, uint8_t *src
, int length
)
798 uint8_t *end
= src
+ length
;
806 mlt_frame
composite_copy_region( mlt_transition
this, mlt_frame a_frame
, mlt_position frame_position
)
808 // Create a frame to return
809 mlt_frame b_frame
= mlt_frame_init( );
811 // Get the properties of the a frame
812 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
814 // Get the properties of the b frame
815 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
818 int position
= position_calculate( this, frame_position
);
821 uint8_t *dest
= NULL
;
823 // Get the image and dimensions
824 uint8_t *image
= mlt_properties_get_data( a_props
, "image", NULL
);
825 int width
= mlt_properties_get_int( a_props
, "width" );
826 int height
= mlt_properties_get_int( a_props
, "height" );
828 // Pointers for copy operation
840 // Will need to know region to copy
841 struct geometry_s result
;
843 float delta
= delta_calculate( this, a_frame
);
845 // Calculate the region now
846 composite_calculate( this, &result
, a_frame
, position
+ delta
/ 2 );
848 // Need to scale down to actual dimensions
849 x
= rint( 0.5 + result
.item
.x
* width
/ result
.nw
);
850 y
= rint( 0.5 + result
.item
.y
* height
/ result
.nh
);
851 w
= rint( 0.5 + result
.item
.w
* width
/ result
.nw
);
852 h
= rint( 0.5 + result
.item
.h
* height
/ result
.nh
);
854 // Make sure that x and w are even
870 // Now we need to create a new destination image
871 dest
= mlt_pool_alloc( w
* h
* 2 );
873 // Assign to the new frame
874 mlt_properties_set_data( b_props
, "image", dest
, w
* h
* 2, mlt_pool_release
, NULL
);
875 mlt_properties_set_int( b_props
, "width", w
);
876 mlt_properties_set_int( b_props
, "height", h
);
885 if ( y
+ h
> height
)
886 h
-= ( y
+ h
- height
);
895 if ( w
> 0 && h
> 0 )
897 // Copy the region of the image
898 p
= image
+ y
* ss
+ x
* 2;
902 inline_memcpy( dest
, p
, w
* 2 );
908 // Assign this position to the b frame
909 mlt_frame_set_position( b_frame
, frame_position
);
910 mlt_properties_set_int( b_props
, "distort", 1 );
919 static int transition_get_image( mlt_frame a_frame
, uint8_t **image
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
921 // Get the b frame from the stack
922 mlt_frame b_frame
= mlt_frame_pop_frame( a_frame
);
924 // Get the transition from the a frame
925 mlt_transition
this = mlt_frame_pop_service( a_frame
);
927 // This compositer is yuv422 only
928 *format
= mlt_image_yuv422
;
930 // Get the image from the a frame
931 mlt_frame_get_image( a_frame
, image
, format
, width
, height
, 1 );
933 // Get the properties from the transition
934 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
936 if ( b_frame
!= NULL
)
938 // Get the properties of the a frame
939 mlt_properties a_props
= MLT_FRAME_PROPERTIES( a_frame
);
941 // Get the properties of the b frame
942 mlt_properties b_props
= MLT_FRAME_PROPERTIES( b_frame
);
944 // Structures for geometry
945 struct geometry_s result
;
947 // Calculate the position
948 float position
= mlt_properties_get_double( b_props
, "relative_position" );
949 float delta
= delta_calculate( this, a_frame
);
951 // Get the image from the b frame
952 uint8_t *image_b
= NULL
;
953 int width_b
= *width
;
954 int height_b
= *height
;
956 // Do the calculation
957 composite_calculate( this, &result
, a_frame
, position
);
959 // Optimisation - no compositing required
960 if ( result
.item
.mix
== 0 || ( result
.item
.w
== 0 && result
.item
.h
== 0 ) )
963 // Need to keep the width/height of the a_frame on the b_frame for titling
964 if ( mlt_properties_get( a_props
, "dest_width" ) == NULL
)
966 mlt_properties_set_int( a_props
, "dest_width", *width
);
967 mlt_properties_set_int( a_props
, "dest_height", *height
);
968 mlt_properties_set_int( b_props
, "dest_width", *width
);
969 mlt_properties_set_int( b_props
, "dest_height", *height
);
973 mlt_properties_set_int( b_props
, "dest_width", mlt_properties_get_int( a_props
, "dest_width" ) );
974 mlt_properties_set_int( b_props
, "dest_height", mlt_properties_get_int( a_props
, "dest_height" ) );
977 // Since we are the consumer of the b_frame, we must pass along these
978 // consumer properties from the a_frame
979 mlt_properties_set_double( b_props
, "consumer_deinterlace", mlt_properties_get_double( a_props
, "consumer_deinterlace" ) );
980 mlt_properties_set_double( b_props
, "consumer_aspect_ratio", mlt_properties_get_double( a_props
, "consumer_aspect_ratio" ) );
981 mlt_properties_set_int( b_props
, "normalised_width", mlt_properties_get_double( a_props
, "normalised_width" ) );
982 mlt_properties_set_int( b_props
, "normalised_height", mlt_properties_get_double( a_props
, "normalised_height" ) );
984 // Special case for titling...
985 if ( mlt_properties_get_int( properties
, "titles" ) )
987 if ( mlt_properties_get( b_props
, "rescale.interp" ) == NULL
)
988 mlt_properties_set( b_props
, "rescale.interp", "hyper" );
989 width_b
= mlt_properties_get_int( a_props
, "dest_width" );
990 height_b
= mlt_properties_get_int( a_props
, "dest_height" );
993 if ( get_b_frame_image( this, b_frame
, &image_b
, &width_b
, &height_b
, &result
) == 0 )
995 uint8_t *dest
= *image
;
996 uint8_t *src
= image_b
;
997 uint8_t *alpha
= mlt_frame_get_alpha_mask( b_frame
);
999 mlt_properties_get_int( a_props
, "consumer_deinterlace" ) ||
1000 mlt_properties_get_int( properties
, "progressive" );
1003 int32_t luma_softness
= mlt_properties_get_double( properties
, "softness" ) * ( 1 << 16 );
1004 uint16_t *luma_bitmap
= get_luma( properties
, width_b
, height_b
);
1005 //composite_line_fn line_fn = mlt_properties_get_int( properties, "_MMX" ) ? composite_line_yuv_mmx : NULL;
1006 composite_line_fn line_fn
= NULL
;
1008 for ( field
= 0; field
< ( progressive ?
1 : 2 ); field
++ )
1010 // Assume lower field (0) first
1011 float field_position
= position
+ field
* delta
;
1013 // Do the calculation if we need to
1014 composite_calculate( this, &result
, a_frame
, field_position
);
1016 if ( mlt_properties_get_int( properties
, "titles" ) )
1018 result
.nw
= result
.item
.w
= *width
;
1019 result
.nh
= result
.item
.h
= *height
;
1020 result
.sw
= width_b
;
1021 result
.sh
= height_b
;
1025 alignment_calculate( &result
);
1027 // Composite the b_frame on the a_frame
1028 composite_yuv( dest
, *width
, *height
, src
, width_b
, height_b
, alpha
, result
, progressive ?
-1 : field
, luma_bitmap
, luma_softness
, line_fn
);
1036 /** Composition transition processing.
1039 static mlt_frame
composite_process( mlt_transition
this, mlt_frame a_frame
, mlt_frame b_frame
)
1041 // Get a unique name to store the frame position
1042 char *name
= mlt_properties_get( MLT_TRANSITION_PROPERTIES( this ), "_unique_id" );
1044 // Assign the current position to the name
1045 mlt_properties_set_position( MLT_FRAME_PROPERTIES( a_frame
), name
, mlt_frame_get_position( a_frame
) );
1047 // Propogate the transition properties to the b frame
1048 mlt_properties_set_double( MLT_FRAME_PROPERTIES( b_frame
), "relative_position", position_calculate( this, mlt_frame_get_position( a_frame
) ) );
1050 mlt_frame_push_service( a_frame
, this );
1051 mlt_frame_push_frame( a_frame
, b_frame
);
1052 mlt_frame_push_get_image( a_frame
, transition_get_image
);
1056 /** Constructor for the filter.
1059 mlt_transition
transition_composite_init( char *arg
)
1061 mlt_transition
this = calloc( sizeof( struct mlt_transition_s
), 1 );
1062 if ( this != NULL
&& mlt_transition_init( this, NULL
) == 0 )
1064 mlt_properties properties
= MLT_TRANSITION_PROPERTIES( this );
1066 this->process
= composite_process
;
1068 // Default starting motion and zoom
1069 mlt_properties_set( properties
, "start", arg
!= NULL ? arg
: "85%,5%:10%x10%" );
1072 mlt_properties_set( properties
, "factory", "fezzik" );
1075 //mlt_properties_set_int( properties, "_MMX", composite_have_mmx() );