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587 lines
18 KiB
587 lines
18 KiB
/*
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* transition_luma.c -- a generic dissolve/wipe processor
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Dan Dennedy <dan@dennedy.org>
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*
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* Adapted from Kino Plugin Timfx, which is
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* Copyright (C) 2002 Timothy M. Shead <tshead@k-3d.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "transition_luma.h"
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#include <framework/mlt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <math.h>
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/** Calculate the position for this frame.
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*/
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static float position_calculate( mlt_transition this, mlt_frame frame )
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{
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// Get the in and out position
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mlt_position in = mlt_transition_get_in( this );
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mlt_position out = mlt_transition_get_out( this );
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// Get the position of the frame
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char *name = mlt_properties_get( MLT_TRANSITION_PROPERTIES( this ), "_unique_id" );
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mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), name );
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// Now do the calcs
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return ( float )( position - in ) / ( float )( out - in + 1 );
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}
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/** Calculate the field delta for this frame - position between two frames.
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*/
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static float delta_calculate( mlt_transition this, mlt_frame frame )
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{
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// Get the in and out position
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mlt_position in = mlt_transition_get_in( this );
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mlt_position out = mlt_transition_get_out( this );
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// Get the position of the frame
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mlt_position position = mlt_frame_get_position( frame );
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// Now do the calcs
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float x = ( float )( position - in ) / ( float )( out - in + 1 );
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float y = ( float )( position + 1 - in ) / ( float )( out - in + 1 );
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return ( y - x ) / 2.0;
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}
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static inline int dissolve_yuv( mlt_frame this, mlt_frame that, float weight, int width, int height )
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{
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int ret = 0;
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int width_src = width, height_src = height;
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mlt_image_format format = mlt_image_yuv422;
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uint8_t *p_src, *p_dest;
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uint8_t *p, *q;
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uint8_t *limit;
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uint8_t *alpha_src;
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uint8_t *alpha_dst;
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int32_t weigh = weight * ( 1 << 16 );
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int32_t weigh_complement = ( 1 - weight ) * ( 1 << 16 );
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if ( mlt_properties_get( &this->parent, "distort" ) )
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mlt_properties_set( &that->parent, "distort", mlt_properties_get( &this->parent, "distort" ) );
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mlt_properties_set_int( &that->parent, "consumer_deinterlace", mlt_properties_get_int( &this->parent, "consumer_deinterlace" ) );
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mlt_frame_get_image( this, &p_dest, &format, &width, &height, 1 );
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alpha_dst = mlt_frame_get_alpha_mask( this );
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mlt_frame_get_image( that, &p_src, &format, &width_src, &height_src, 0 );
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alpha_src = mlt_frame_get_alpha_mask( that );
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// Pick the lesser of two evils ;-)
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width_src = width_src > width ? width : width_src;
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height_src = height_src > height ? height : height_src;
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p = p_dest;
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q = alpha_dst;
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limit = p_dest + height_src * width_src * 2;
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while ( p < limit )
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{
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*p_dest++ = ( *p_src++ * weigh + *p++ * weigh_complement ) >> 16;
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*p_dest++ = ( *p_src++ * weigh + *p++ * weigh_complement ) >> 16;
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*alpha_dst++ = ( *alpha_src++ * weigh + *q++ * weigh_complement ) >> 16;
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}
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return ret;
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}
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// image processing functions
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static inline int32_t smoothstep( int32_t edge1, int32_t edge2, uint32_t a )
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{
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if ( a < edge1 )
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return 0;
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if ( a >= edge2 )
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return 0x10000;
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a = ( ( a - edge1 ) << 16 ) / ( edge2 - edge1 );
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return ( ( ( a * a ) >> 16 ) * ( ( 3 << 16 ) - ( 2 * a ) ) ) >> 16;
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}
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/** powerful stuff
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\param field_order -1 = progressive, 0 = lower field first, 1 = top field first
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*/
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static void luma_composite( mlt_frame a_frame, mlt_frame b_frame, int luma_width, int luma_height,
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uint16_t *luma_bitmap, float pos, float frame_delta, float softness, int field_order,
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int *width, int *height )
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{
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int width_src = *width, height_src = *height;
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int width_dest = *width, height_dest = *height;
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mlt_image_format format_src = mlt_image_yuv422, format_dest = mlt_image_yuv422;
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uint8_t *p_src, *p_dest;
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int i, j;
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int stride_src;
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int stride_dest;
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uint16_t weight = 0;
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format_src = mlt_image_yuv422;
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format_dest = mlt_image_yuv422;
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if ( mlt_properties_get( &a_frame->parent, "distort" ) )
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mlt_properties_set( &b_frame->parent, "distort", mlt_properties_get( &a_frame->parent, "distort" ) );
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mlt_properties_set_int( &b_frame->parent, "consumer_deinterlace", mlt_properties_get_int( &a_frame->parent, "consumer_deinterlace" ) );
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mlt_frame_get_image( a_frame, &p_dest, &format_dest, &width_dest, &height_dest, 1 );
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mlt_frame_get_image( b_frame, &p_src, &format_src, &width_src, &height_src, 0 );
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// Pick the lesser of two evils ;-)
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width_src = width_src > width_dest ? width_dest : width_src;
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height_src = height_src > height_dest ? height_dest : height_src;
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stride_src = width_src * 2;
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stride_dest = width_dest * 2;
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// Offset the position based on which field we're looking at ...
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int32_t field_pos[ 2 ];
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field_pos[ 0 ] = ( pos + ( ( field_order == 0 ? 1 : 0 ) * frame_delta * 0.5 ) ) * ( 1 << 16 ) * ( 1.0 + softness );
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field_pos[ 1 ] = ( pos + ( ( field_order == 0 ? 0 : 1 ) * frame_delta * 0.5 ) ) * ( 1 << 16 ) * ( 1.0 + softness );
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register uint8_t *p;
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register uint8_t *q;
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register uint8_t *o;
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uint16_t *l;
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uint32_t value;
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int32_t x_diff = ( luma_width << 16 ) / *width;
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int32_t y_diff = ( luma_height << 16 ) / *height;
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int32_t x_offset = 0;
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int32_t y_offset = 0;
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uint8_t *p_row;
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uint8_t *q_row;
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int32_t i_softness = softness * ( 1 << 16 );
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int field_count = field_order < 0 ? 1 : 2;
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int field_stride_src = field_count * stride_src;
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int field_stride_dest = field_count * stride_dest;
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int field = 0;
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// composite using luma map
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while ( field < field_count )
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{
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p_row = p_src + field * stride_src;
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q_row = p_dest + field * stride_dest;
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y_offset = field << 16;
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i = field;
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while ( i < height_src )
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{
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p = p_row;
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q = q_row;
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o = q;
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l = luma_bitmap + ( y_offset >> 16 ) * ( luma_width * field_count );
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x_offset = 0;
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j = width_src;
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while( j -- )
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{
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weight = l[ x_offset >> 16 ];
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value = smoothstep( weight, i_softness + weight, field_pos[ field ] );
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*o ++ = ( *p ++ * value + *q++ * ( ( 1 << 16 ) - value ) ) >> 16;
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*o ++ = ( *p ++ * value + *q++ * ( ( 1 << 16 ) - value ) ) >> 16;
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x_offset += x_diff;
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}
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y_offset += y_diff;
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i += field_count;
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p_row += field_stride_src;
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q_row += field_stride_dest;
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}
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field ++;
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}
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}
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/** Load the luma map from PGM stream.
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*/
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static void luma_read_pgm( FILE *f, uint16_t **map, int *width, int *height )
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{
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uint8_t *data = NULL;
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while (1)
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{
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char line[128];
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char comment[128];
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int i = 2;
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int maxval;
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int bpp;
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uint16_t *p;
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line[127] = '\0';
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// get the magic code
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if ( fgets( line, 127, f ) == NULL )
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break;
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// skip comments
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while ( sscanf( line, " #%s", comment ) > 0 )
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if ( fgets( line, 127, f ) == NULL )
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break;
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if ( line[0] != 'P' || line[1] != '5' )
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break;
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// skip white space and see if a new line must be fetched
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for ( i = 2; i < 127 && line[i] != '\0' && isspace( line[i] ); i++ );
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if ( ( line[i] == '\0' || line[i] == '#' ) && fgets( line, 127, f ) == NULL )
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break;
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// skip comments
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while ( sscanf( line, " #%s", comment ) > 0 )
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if ( fgets( line, 127, f ) == NULL )
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break;
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// get the dimensions
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if ( line[0] == 'P' )
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i = sscanf( line, "P5 %d %d %d", width, height, &maxval );
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else
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i = sscanf( line, "%d %d %d", width, height, &maxval );
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// get the height value, if not yet
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if ( i < 2 )
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{
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if ( fgets( line, 127, f ) == NULL )
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break;
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// skip comments
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while ( sscanf( line, " #%s", comment ) > 0 )
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if ( fgets( line, 127, f ) == NULL )
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break;
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i = sscanf( line, "%d", height );
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if ( i == 0 )
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break;
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else
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i = 2;
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}
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// get the maximum gray value, if not yet
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if ( i < 3 )
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{
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if ( fgets( line, 127, f ) == NULL )
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break;
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// skip comments
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while ( sscanf( line, " #%s", comment ) > 0 )
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if ( fgets( line, 127, f ) == NULL )
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break;
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i = sscanf( line, "%d", &maxval );
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if ( i == 0 )
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break;
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}
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// determine if this is one or two bytes per pixel
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bpp = maxval > 255 ? 2 : 1;
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// allocate temporary storage for the raw data
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data = mlt_pool_alloc( *width * *height * bpp );
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if ( data == NULL )
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break;
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// read the raw data
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if ( fread( data, *width * *height * bpp, 1, f ) != 1 )
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break;
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// allocate the luma bitmap
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*map = p = (uint16_t*)mlt_pool_alloc( *width * *height * sizeof( uint16_t ) );
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if ( *map == NULL )
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break;
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// proces the raw data into the luma bitmap
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for ( i = 0; i < *width * *height * bpp; i += bpp )
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{
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if ( bpp == 1 )
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*p++ = data[ i ] << 8;
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else
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*p++ = ( data[ i ] << 8 ) + data[ i+1 ];
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}
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break;
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}
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if ( data != NULL )
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mlt_pool_release( data );
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}
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/** Generate a luma map from an RGB image.
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*/
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static void luma_read_yuv422( uint8_t *image, uint16_t **map, int width, int height )
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{
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int i;
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int size = width * height * 2;
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// allocate the luma bitmap
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uint16_t *p = *map = ( uint16_t* )mlt_pool_alloc( width * height * sizeof( uint16_t ) );
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if ( *map == NULL )
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return;
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// proces the image data into the luma bitmap
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for ( i = 0; i < size; i += 2 )
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*p++ = ( image[ i ] - 16 ) * 299; // 299 = 65535 / 219
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}
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/** Generate a luma map from a YUV image.
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*/
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static void luma_read_rgb24( uint8_t *image, uint16_t **map, int width, int height )
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{
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}
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/** Get the image.
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*/
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static int transition_get_image( mlt_frame a_frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
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{
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// Get the b frame from the stack
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mlt_frame b_frame = mlt_frame_pop_frame( a_frame );
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// Get the transition object
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mlt_transition transition = mlt_frame_pop_service( a_frame );
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// Get the properties of the transition
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mlt_properties properties = MLT_TRANSITION_PROPERTIES( transition );
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// Get the properties of the a frame
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mlt_properties a_props = MLT_FRAME_PROPERTIES( a_frame );
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// Get the properties of the b frame
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mlt_properties b_props = MLT_FRAME_PROPERTIES( b_frame );
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// This compositer is yuv422 only
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*format = mlt_image_yuv422;
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// The cached luma map information
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int luma_width = mlt_properties_get_int( properties, "width" );
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int luma_height = mlt_properties_get_int( properties, "height" );
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uint16_t *luma_bitmap = mlt_properties_get_data( properties, "bitmap", NULL );
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// If the filename property changed, reload the map
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char *resource = mlt_properties_get( properties, "resource" );
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// Correct width/height if not specified
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if ( luma_width == 0 || luma_height == 0 )
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{
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luma_width = mlt_properties_get_int( a_props, "width" );
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luma_height = mlt_properties_get_int( a_props, "height" );
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}
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if ( luma_bitmap == NULL && resource != NULL )
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{
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char temp[ 512 ];
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char *extension = strrchr( resource, '.' );
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if ( strchr( resource, '%' ) )
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{
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FILE *test;
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sprintf( temp, "%s/lumas/%s/%s", mlt_factory_prefix( ), mlt_environment( "MLT_NORMALISATION" ), strchr( resource, '%' ) + 1 );
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test = fopen( temp, "r" );
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if ( test == NULL )
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strcat( temp, ".png" );
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else
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fclose( test );
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resource = temp;
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extension = strrchr( resource, '.' );
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}
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// See if it is a PGM
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if ( extension != NULL && strcmp( extension, ".pgm" ) == 0 )
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{
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// Open PGM
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FILE *f = fopen( resource, "r" );
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if ( f != NULL )
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{
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// Load from PGM
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luma_read_pgm( f, &luma_bitmap, &luma_width, &luma_height );
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fclose( f );
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// Set the transition properties
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mlt_properties_set_int( properties, "width", luma_width );
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mlt_properties_set_int( properties, "height", luma_height );
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mlt_properties_set_data( properties, "bitmap", luma_bitmap, luma_width * luma_height * 2, mlt_pool_release, NULL );
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}
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}
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else
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{
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// Get the factory producer service
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char *factory = mlt_properties_get( properties, "factory" );
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// Create the producer
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mlt_producer producer = mlt_factory_producer( factory, resource );
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// If we have one
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if ( producer != NULL )
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{
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// Get the producer properties
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mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( producer );
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// Ensure that we loop
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mlt_properties_set( producer_properties, "eof", "loop" );
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// Now pass all producer. properties on the transition down
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mlt_properties_pass( producer_properties, properties, "producer." );
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// We will get the alpha frame from the producer
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mlt_frame luma_frame = NULL;
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// Get the luma frame
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if ( mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer ), &luma_frame, 0 ) == 0 )
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{
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uint8_t *luma_image = NULL;
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mlt_image_format luma_format = mlt_image_yuv422;
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// Get image from the luma producer
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mlt_properties_set( MLT_FRAME_PROPERTIES( luma_frame ), "rescale.interp", "nearest" );
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mlt_frame_get_image( luma_frame, &luma_image, &luma_format, &luma_width, &luma_height, 0 );
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// Generate the luma map
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if ( luma_image != NULL && luma_format == mlt_image_yuv422 )
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luma_read_yuv422( luma_image, &luma_bitmap, luma_width, luma_height );
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else if ( luma_image != NULL && luma_format == mlt_image_rgb24 )
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luma_read_rgb24( luma_image, &luma_bitmap, luma_width, luma_height );
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// Set the transition properties
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mlt_properties_set_int( properties, "width", luma_width );
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mlt_properties_set_int( properties, "height", luma_height );
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mlt_properties_set_data( properties, "bitmap", luma_bitmap, luma_width * luma_height * 2, mlt_pool_release, NULL );
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// Cleanup the luma frame
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mlt_frame_close( luma_frame );
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}
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// Cleanup the luma producer
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mlt_producer_close( producer );
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}
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}
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|
}
|
|
|
|
// Arbitrary composite defaults
|
|
float mix = position_calculate( transition, a_frame );
|
|
float frame_delta = delta_calculate( transition, a_frame );
|
|
|
|
float luma_softness = mlt_properties_get_double( properties, "softness" );
|
|
int progressive =
|
|
mlt_properties_get_int( a_props, "consumer_deinterlace" ) ||
|
|
mlt_properties_get_int( properties, "progressive" ) ||
|
|
mlt_properties_get_int( b_props, "luma.progressive" );
|
|
int top_field_first = mlt_properties_get_int( b_props, "top_field_first" );
|
|
int reverse = mlt_properties_get_int( properties, "reverse" );
|
|
int invert = mlt_properties_get_int( properties, "invert" );
|
|
|
|
if ( mlt_properties_get( a_props, "rescale.interp" ) == NULL || !strcmp( mlt_properties_get( a_props, "rescale.interp" ), "none" ) )
|
|
mlt_properties_set( a_props, "rescale.interp", "nearest" );
|
|
|
|
// Since we are the consumer of the b_frame, we must pass along this
|
|
// consumer property from the a_frame
|
|
if ( mlt_properties_get_double( a_props, "aspect_ratio" ) == 0.0 )
|
|
mlt_properties_set_double( a_props, "aspect_ratio", mlt_properties_get_double( a_props, "consumer_aspect_ratio" ) );
|
|
if ( mlt_properties_get_double( b_props, "aspect_ratio" ) == 0.0 )
|
|
mlt_properties_set_double( b_props, "aspect_ratio", mlt_properties_get_double( a_props, "consumer_aspect_ratio" ) );
|
|
mlt_properties_set_double( b_props, "consumer_aspect_ratio", mlt_properties_get_double( a_props, "consumer_aspect_ratio" ) );
|
|
|
|
// Honour the reverse here
|
|
if ( mix >= 1.0 )
|
|
mix -= floor( mix );
|
|
|
|
mix = reverse || invert ? 1 - mix : mix;
|
|
frame_delta *= reverse || invert ? -1.0 : 1.0;
|
|
|
|
// Ensure we get scaling on the b_frame
|
|
if ( mlt_properties_get( b_props, "rescale.interp" ) == NULL || !strcmp( mlt_properties_get( b_props, "rescale.interp" ), "none" ) )
|
|
mlt_properties_set( b_props, "rescale.interp", "nearest" );
|
|
|
|
if ( mlt_properties_get( properties, "fixed" ) )
|
|
mix = mlt_properties_get_double( properties, "fixed" );
|
|
|
|
|
|
if ( luma_width > 0 && luma_height > 0 && luma_bitmap != NULL )
|
|
// Composite the frames using a luma map
|
|
luma_composite( !invert ? a_frame : b_frame, !invert ? b_frame : a_frame, luma_width, luma_height, luma_bitmap, mix, frame_delta,
|
|
luma_softness, progressive ? -1 : top_field_first, width, height );
|
|
else
|
|
// Dissolve the frames using the time offset for mix value
|
|
dissolve_yuv( a_frame, b_frame, mix, *width, *height );
|
|
|
|
|
|
// Extract the a_frame image info
|
|
*width = mlt_properties_get_int( !invert ? a_props : b_props, "width" );
|
|
*height = mlt_properties_get_int( !invert ? a_props : b_props, "height" );
|
|
*image = mlt_properties_get_data( !invert ? a_props : b_props, "image", NULL );
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/** Luma transition processing.
|
|
*/
|
|
|
|
static mlt_frame transition_process( mlt_transition transition, mlt_frame a_frame, mlt_frame b_frame )
|
|
{
|
|
// Get a unique name to store the frame position
|
|
char *name = mlt_properties_get( MLT_TRANSITION_PROPERTIES( transition ), "_unique_id" );
|
|
|
|
// Assign the current position to the name
|
|
mlt_properties_set_position( MLT_FRAME_PROPERTIES( a_frame ), name, mlt_frame_get_position( a_frame ) );
|
|
|
|
// Push the transition on to the frame
|
|
mlt_frame_push_service( a_frame, transition );
|
|
|
|
// Push the b_frame on to the stack
|
|
mlt_frame_push_frame( a_frame, b_frame );
|
|
|
|
// Push the transition method
|
|
mlt_frame_push_get_image( a_frame, transition_get_image );
|
|
|
|
return a_frame;
|
|
}
|
|
|
|
/** Constructor for the filter.
|
|
*/
|
|
|
|
mlt_transition transition_luma_init( char *lumafile )
|
|
{
|
|
mlt_transition transition = mlt_transition_new( );
|
|
if ( transition != NULL )
|
|
{
|
|
// Set the methods
|
|
transition->process = transition_process;
|
|
|
|
// Default factory
|
|
mlt_properties_set( MLT_TRANSITION_PROPERTIES( transition ), "factory", "fezzik" );
|
|
|
|
// Set the main property
|
|
mlt_properties_set( MLT_TRANSITION_PROPERTIES( transition ), "resource", lumafile );
|
|
|
|
// Inform apps and framework that this is a video only transition
|
|
mlt_properties_set_int( MLT_TRANSITION_PROPERTIES( transition ), "_transition_type", 1 );
|
|
|
|
return transition;
|
|
}
|
|
return NULL;
|
|
}
|