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107 lines
3.4 KiB
107 lines
3.4 KiB
/*
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* filter_deinterlace.c -- deinterlace filter
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Charles Yates <charles.yates@pandora.be>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "filter_deinterlace.h"
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#include "deinterlace.h"
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#include <framework/mlt_frame.h>
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#include <string.h>
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#include <stdlib.h>
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/** Do it :-).
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*/
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static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
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{
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int error = 0;
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int deinterlace = mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "consumer_deinterlace" );
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// Pop the service off the stack
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mlt_filter filter = mlt_frame_pop_service( this );
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// Determine if we need a writable version or not
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if ( deinterlace && !writable )
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writable = !mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "progressive" );
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// Get the input image
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error = mlt_frame_get_image( this, image, format, width, height, writable );
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// Check that we want progressive and we aren't already progressive
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if ( deinterlace && *format == mlt_image_yuv422 && *image != NULL && !mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "progressive" ) )
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{
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// Determine deinterlace method
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char *method_str = mlt_properties_get( MLT_FILTER_PROPERTIES( filter ), "method" );
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int method = DEINTERLACE_LINEARBLEND;
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char *frame_method_str = mlt_properties_get( MLT_FRAME_PROPERTIES( this ), "deinterlace_method" );
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if ( frame_method_str != NULL )
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method_str = frame_method_str;
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if ( method_str == NULL )
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method = DEINTERLACE_LINEARBLEND;
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else if ( strcmp( method_str, "bob" ) == 0 )
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method = DEINTERLACE_BOB;
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else if ( strcmp( method_str, "weave" ) == 0 )
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method = DEINTERLACE_BOB;
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else if ( strcmp( method_str, "greedy" ) == 0 )
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method = DEINTERLACE_GREEDY;
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else if ( strcmp( method_str, "onefield" ) == 0 )
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method = DEINTERLACE_ONEFIELD;
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// Deinterlace the image
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deinterlace_yuv( *image, image, *width * 2, *height, method );
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// Make sure that others know the frame is deinterlaced
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mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "progressive", 1 );
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}
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return error;
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}
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/** Deinterlace filter processing - this should be lazy evaluation here...
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*/
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static mlt_frame deinterlace_process( mlt_filter this, mlt_frame frame )
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{
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// Push this on to the service stack
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mlt_frame_push_service( frame, this );
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// Push the get_image method on to the stack
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mlt_frame_push_get_image( frame, filter_get_image );
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return frame;
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}
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/** Constructor for the filter.
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*/
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mlt_filter filter_deinterlace_init( void *arg )
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{
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mlt_filter this = mlt_filter_new( );
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if ( this != NULL )
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{
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this->process = deinterlace_process;
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mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "method", arg );
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}
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return this;
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}
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