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			81 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			81 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * This file is part of FFmpeg.
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|  *
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|  * FFmpeg 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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|  * FFmpeg 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 FFmpeg; 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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| 
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| #ifndef AVFILTER_IDET_H
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| #define AVFILTER_IDET_H
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| 
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| #include "libavutil/pixdesc.h"
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| #include "avfilter.h"
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| 
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| #define HIST_SIZE 4
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| 
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| typedef int (*ff_idet_filter_func)(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w);
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| 
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| typedef enum {
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|     TFF,
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|     BFF,
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|     PROGRESSIVE,
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|     UNDETERMINED,
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| } Type;
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| 
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| typedef enum {
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|     REPEAT_NONE,
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|     REPEAT_TOP,
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|     REPEAT_BOTTOM,
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| } RepeatedField;
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| 
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| typedef struct IDETContext {
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|     const AVClass *class;
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|     float interlace_threshold;
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|     float progressive_threshold;
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|     float repeat_threshold;
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|     float half_life;
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|     uint64_t decay_coefficient;
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| 
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|     Type last_type;
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| 
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|     uint64_t repeats[3];
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|     uint64_t prestat[4];
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|     uint64_t poststat[4];
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|     uint64_t total_repeats[3];
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|     uint64_t total_prestat[4];
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|     uint64_t total_poststat[4];
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| 
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|     uint8_t history[HIST_SIZE];
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| 
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|     AVFrame *cur;
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|     AVFrame *next;
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|     AVFrame *prev;
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|     ff_idet_filter_func filter_line;
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| 
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|     int interlaced_flag_accuracy;
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|     int analyze_interlaced_flag;
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|     int analyze_interlaced_flag_done;
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| 
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|     const AVPixFmtDescriptor *csp;
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|     int eof;
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| } IDETContext;
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| 
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| void ff_idet_init_x86(IDETContext *idet, int for_16b);
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| 
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| /* main fall-back for left-over */
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| int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w);
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| int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w);
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| 
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| #endif
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