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			593 lines
		
	
	
		
			26 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			593 lines
		
	
	
		
			26 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2021 Paul B Mahol
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|  *
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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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| #include "libavutil/common.h"
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| #include "libavutil/imgutils.h"
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| #include "libavutil/opt.h"
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| #include "libavutil/pixdesc.h"
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| #include "avfilter.h"
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| #include "formats.h"
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| #include "internal.h"
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| #include "video.h"
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| 
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| typedef struct ESTDIFContext {
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|     const AVClass *class;
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| 
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|     int mode;             ///< 0 is frame, 1 is field
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|     int parity;           ///< frame field parity
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|     int deint;            ///< which frames to deinterlace
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|     int rslope;           ///< best edge slope search radius
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|     int redge;            ///< best edge match search radius
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|     int ecost;            ///< edge cost for edge matching
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|     int mcost;            ///< middle cost for edge matching
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|     int dcost;            ///< distance cost for edge matching
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|     int interp;           ///< type of interpolation
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|     int linesize[4];      ///< bytes of pixel data per line for each plane
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|     int planewidth[4];    ///< width of each plane
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|     int planeheight[4];   ///< height of each plane
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|     int field;            ///< which field are we on, 0 or 1
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|     int eof;
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|     int depth;
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|     int max;
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|     int nb_planes;
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|     int nb_threads;
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|     AVFrame *prev;
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| 
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|     void (*interpolate)(struct ESTDIFContext *s, uint8_t *dst,
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|                         const uint8_t *prev_line,  const uint8_t *next_line,
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|                         const uint8_t *prev2_line, const uint8_t *next2_line,
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|                         const uint8_t *prev3_line, const uint8_t *next3_line,
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|                         int x, int width, int rslope, int redge,
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|                         int depth, int *K);
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| 
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|     unsigned (*mid_8[3])(const uint8_t *const prev,
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|                          const uint8_t *const next,
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|                          const uint8_t *const prev2,
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|                          const uint8_t *const next2,
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|                          const uint8_t *const prev3,
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|                          const uint8_t *const next3,
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|                          int end, int x, int k, int depth);
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| 
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|     unsigned (*mid_16[3])(const uint16_t *const prev,
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|                           const uint16_t *const next,
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|                           const uint16_t *const prev2,
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|                           const uint16_t *const next2,
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|                           const uint16_t *const prev3,
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|                           const uint16_t *const next3,
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|                           int end, int x, int k, int depth);
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| } ESTDIFContext;
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| 
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| #define MAX_R 15
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| #define S     (MAX_R * 2 + 1)
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| 
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| #define OFFSET(x) offsetof(ESTDIFContext, x)
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| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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| #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }
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| 
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| static const AVOption estdif_options[] = {
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|     { "mode", "specify the mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "mode" },
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|     CONST("frame", "send one frame for each frame", 0, "mode"),
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|     CONST("field", "send one frame for each field", 1, "mode"),
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|     { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=-1}, -1, 1, FLAGS, "parity" },
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|     CONST("tff",  "assume top field first",    0, "parity"),
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|     CONST("bff",  "assume bottom field first", 1, "parity"),
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|     CONST("auto", "auto detect parity",       -1, "parity"),
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|     { "deint",  "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "deint" },
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|     CONST("all",        "deinterlace all frames",                       0, "deint"),
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|     CONST("interlaced", "only deinterlace frames marked as interlaced", 1, "deint"),
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|     { "rslope", "specify the search radius for edge slope tracing", OFFSET(rslope), AV_OPT_TYPE_INT, {.i64=1}, 1, MAX_R, FLAGS },
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|     { "redge",  "specify the search radius for best edge matching", OFFSET(redge),  AV_OPT_TYPE_INT, {.i64=2}, 0, MAX_R, FLAGS },
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|     { "ecost",  "specify the edge cost for edge matching",          OFFSET(ecost),  AV_OPT_TYPE_INT, {.i64=2}, 0, 50, FLAGS },
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|     { "mcost",  "specify the middle cost for edge matching",        OFFSET(mcost),  AV_OPT_TYPE_INT, {.i64=1}, 0, 50, FLAGS },
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|     { "dcost",  "specify the distance cost for edge matching",      OFFSET(dcost),  AV_OPT_TYPE_INT, {.i64=1}, 0, 50, FLAGS },
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|     { "interp", "specify the type of interpolation",                OFFSET(interp), AV_OPT_TYPE_INT, {.i64=1}, 0, 2,     FLAGS, "interp" },
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|     CONST("2p", "two-point interpolation",  0, "interp"),
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|     CONST("4p", "four-point interpolation", 1, "interp"),
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|     CONST("6p", "six-point interpolation",  2, "interp"),
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|     { NULL }
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| };
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| 
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| AVFILTER_DEFINE_CLASS(estdif);
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| 
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| static const enum AVPixelFormat pix_fmts[] = {
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|     AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
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|     AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
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|     AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
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|     AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
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|     AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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|     AV_PIX_FMT_YUVJ411P,
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|     AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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|     AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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|     AV_PIX_FMT_GRAY8,
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|     AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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|     AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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|     AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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|     AV_PIX_FMT_YUV440P10,
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|     AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
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|     AV_PIX_FMT_YUV440P12,
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|     AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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|     AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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|     AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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|     AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
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|     AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
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|     AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
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|     AV_PIX_FMT_GBRAP10,   AV_PIX_FMT_GBRAP12,    AV_PIX_FMT_GBRAP16,
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|     AV_PIX_FMT_NONE
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| };
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| 
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| static int config_output(AVFilterLink *outlink)
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| {
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|     AVFilterContext *ctx = outlink->src;
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|     AVFilterLink *inlink = ctx->inputs[0];
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|     ESTDIFContext *s = ctx->priv;
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| 
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|     outlink->time_base = av_mul_q(inlink->time_base, (AVRational){1, 2});
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|     if (s->mode)
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|         outlink->frame_rate = av_mul_q(inlink->frame_rate, (AVRational){2, 1});
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| 
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|     return 0;
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| }
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| 
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| typedef struct ThreadData {
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|     AVFrame *out, *in;
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| } ThreadData;
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| 
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| #define MIDL(type, ss)                                         \
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| static unsigned midl_##ss(const type *const prev,              \
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|                           const type *const next,              \
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|                           int end, int x, int k)               \
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| {                                                              \
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|     return (prev[av_clip(x + k, 0, end)] +                     \
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|             next[av_clip(x - k, 0, end)] + 1) >> 1;            \
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| }
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| 
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| MIDL(uint8_t, 8)
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| MIDL(uint16_t, 16)
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| 
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| #define MID2(type, ss)                                         \
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| static unsigned mid2_##ss(const type *const prev,              \
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|                           const type *const next,              \
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|                           const type *const prev2,             \
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|                           const type *const next2,             \
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|                           const type *const prev3,             \
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|                           const type *const next3,             \
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|                           int end, int x, int k, int depth)    \
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| {                                                              \
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|     return (prev[av_clip(x + k, 0, end)] +                     \
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|             next[av_clip(x - k, 0, end)] + 1) >> 1;            \
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| }
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| 
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| MID2(uint8_t, 8)
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| MID2(uint16_t, 16)
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| 
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| #define MID4(type, ss)                                         \
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| static unsigned mid4_##ss(const type *const prev,              \
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|                           const type *const next,              \
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|                           const type *const prev2,             \
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|                           const type *const next2,             \
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|                           const type *const prev3,             \
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|                           const type *const next3,             \
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|                           int end, int x, int k, int depth)    \
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| {                                                              \
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|     return av_clip_uintp2_c((                                  \
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|             9 * (prev[av_clip(x + k, 0, end)] +                \
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|                  next[av_clip(x - k, 0, end)]) -               \
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|             1 * (prev2[av_clip(x + k*3, 0, end)] +             \
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|                  next2[av_clip(x - k*3, 0, end)]) + 8) >> 4,   \
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|                  depth);                                       \
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| }
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| 
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| MID4(uint8_t, 8)
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| MID4(uint16_t, 16)
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| 
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| #define MID6(type, ss)                                         \
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| static unsigned mid6_##ss(const type *const prev,              \
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|                           const type *const next,              \
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|                           const type *const prev2,             \
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|                           const type *const next2,             \
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|                           const type *const prev3,             \
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|                           const type *const next3,             \
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|                           int end, int x, int k, int depth)    \
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| {                                                              \
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|     return av_clip_uintp2_c((                                  \
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|            20 * (prev[av_clip(x + k, 0, end)] +                \
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|                  next[av_clip(x - k, 0, end)]) -               \
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|             5 * (prev2[av_clip(x + k*3, 0, end)] +             \
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|                  next2[av_clip(x - k*3, 0, end)]) +            \
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|             1 * (prev3[av_clip(x + k*5, 0, end)] +             \
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|                  next3[av_clip(x - k*5, 0, end)]) + 16) >> 5,  \
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|                  depth);                                       \
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| }
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| 
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| MID6(uint8_t, 8)
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| MID6(uint16_t, 16)
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| 
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| #define DIFF(type, ss)                                         \
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| static unsigned diff_##ss(const type *const prev,              \
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|                           const type *const next,              \
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|                           int x, int y)                        \
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| {                                                              \
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|     return FFABS(prev[x] -  next[y]);                          \
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| }
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| 
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| DIFF(uint8_t, 8)
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| DIFF(uint16_t, 16)
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| 
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| #define COST(type, ss)                                         \
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| static unsigned cost_##ss(const type *const prev,              \
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|                           const type *const next,              \
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|                           int end, int x, int k)               \
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| {                                                              \
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|     const int m = midl_##ss(prev, next, end, x, k);            \
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|     const int p = prev[x];                                     \
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|     const int n = next[x];                                     \
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|                                                                \
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|     return FFABS(p - m) + FFABS(n - m);                        \
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| }
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| 
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| COST(uint8_t, 8)
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| COST(uint16_t, 16)
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| 
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| #define INTERPOLATE(type, atype, amax, ss)                                     \
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| static void interpolate_##ss(ESTDIFContext *s, uint8_t *ddst,                  \
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|                              const uint8_t *const pprev_line,                  \
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|                              const uint8_t *const nnext_line,                  \
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|                              const uint8_t *const pprev2_line,                 \
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|                              const uint8_t *const nnext2_line,                 \
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|                              const uint8_t *const pprev3_line,                 \
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|                              const uint8_t *const nnext3_line,                 \
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|                              int x, int width, int rslope,                     \
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|                              int redge, int depth,                             \
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|                              int *K)                                           \
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| {                                                                              \
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|     type *dst = (type *)ddst;                                                  \
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|     const type *const prev_line = (const type *const)pprev_line;               \
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|     const type *const prev2_line = (const type *const)pprev2_line;             \
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|     const type *const prev3_line = (const type *const)pprev3_line;             \
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|     const type *const next_line = (const type *const)nnext_line;               \
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|     const type *const next2_line = (const type *const)nnext2_line;             \
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|     const type *const next3_line = (const type *const)nnext3_line;             \
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|     const int interp = s->interp;                                              \
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|     const int ecost = s->ecost;                                                \
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|     const int dcost = s->dcost;                                                \
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|     const int mcost = s->mcost;                                                \
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|     atype sd[S], sD[S], di = 0;                                                \
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|     const int end = width - 1;                                                 \
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|     atype dmin = amax;                                                         \
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|     int id = 0, iD = 0;                                                        \
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|     int k = *K;                                                                \
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|                                                                                \
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|     for (int i = -rslope; i <= rslope && abs(k) > rslope; i++) {               \
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|         atype sum = 0;                                                         \
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|                                                                                \
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|         for (int j = -redge; j <= redge; j++) {                                \
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|             const int xx = av_clip(x + i + j, 0, end);                         \
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|             const int yy = av_clip(x - i + j, 0, end);                         \
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|             sum += diff_##ss(prev_line,  next_line,  xx, yy);                  \
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|             sum += diff_##ss(prev2_line, prev_line,  xx, yy);                  \
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|             sum += diff_##ss(next_line,  next2_line, xx, yy);                  \
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|         }                                                                      \
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|                                                                                \
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|         sD[i + rslope]  = ecost * sum;                                         \
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|         sD[i + rslope] += mcost * cost_##ss(prev_line,  next_line,  end, x, i);\
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|         sD[i + rslope] += dcost * abs(i);                                      \
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|                                                                                \
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|         if (dmin > sD[i + rslope]) {                                           \
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|             dmin = sD[i + rslope];                                             \
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|             di = 1;                                                            \
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|             iD = i;                                                            \
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|         }                                                                      \
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|     }                                                                          \
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|                                                                                \
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|     for (int i = -rslope; i <= rslope; i++) {                                  \
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|         atype sum = 0;                                                         \
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|                                                                                \
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|         for (int j = -redge; j <= redge; j++) {                                \
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|             const int xx = av_clip(x + k + i + j, 0, end);                     \
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|             const int yy = av_clip(x - k - i + j, 0, end);                     \
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|             sum += diff_##ss(prev_line,  next_line,  xx, yy);                  \
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|             sum += diff_##ss(prev2_line, prev_line,  xx, yy);                  \
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|             sum += diff_##ss(next_line,  next2_line, xx, yy);                  \
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|         }                                                                      \
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|                                                                                \
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|         sd[i + rslope]  = ecost * sum;                                         \
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|         sd[i + rslope] += mcost * cost_##ss(prev_line, next_line, end, x, k+i);\
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|         sd[i + rslope] += dcost * abs(k + i);                                  \
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|                                                                                \
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|         if (dmin > sd[i + rslope]) {                                           \
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|             dmin = sd[i + rslope];                                             \
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|             di = 0;                                                            \
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|             id = i;                                                            \
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|         }                                                                      \
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|     }                                                                          \
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|                                                                                \
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|     k = di ? iD : k + id;                                                      \
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|                                                                                \
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|     dst[x] = s->mid_##ss[interp](prev_line, next_line,                         \
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|                                  prev2_line, next2_line,                       \
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|                                  prev3_line, next3_line,                       \
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|                                  end, x, k, depth);                            \
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|                                                                                \
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|     *K = k;                                                                    \
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| }
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| 
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| INTERPOLATE(uint8_t,  unsigned, UINT_MAX, 8)
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| INTERPOLATE(uint16_t, uint64_t, UINT64_MAX, 16)
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| 
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| static int deinterlace_slice(AVFilterContext *ctx, void *arg,
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|                              int jobnr, int nb_jobs)
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| {
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|     ESTDIFContext *s = ctx->priv;
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|     ThreadData *td = arg;
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|     AVFrame *out = td->out;
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|     AVFrame *in = td->in;
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|     const int rslope = s->rslope;
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|     const int redge = s->redge;
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|     const int depth = s->depth;
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|     const int interlaced = !!(in->flags & AV_FRAME_FLAG_INTERLACED);
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|     const int tff = (s->field == (s->parity == -1 ? interlaced ? !!(in->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) : 1 :
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|                                   s->parity ^ 1));
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| 
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|     for (int plane = 0; plane < s->nb_planes; plane++) {
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|         const uint8_t *src_data = in->data[plane];
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|         uint8_t *dst_data = out->data[plane];
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|         const int linesize = s->linesize[plane];
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|         const int width = s->planewidth[plane];
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|         const int height = s->planeheight[plane];
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|         const int src_linesize = in->linesize[plane];
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|         const int dst_linesize = out->linesize[plane];
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|         const int start = (height * jobnr) / nb_jobs;
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|         const int end = (height * (jobnr+1)) / nb_jobs;
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|         const uint8_t *prev_line, *prev2_line, *next_line, *next2_line, *in_line;
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|         const uint8_t *prev3_line, *next3_line;
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|         uint8_t *out_line;
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|         int y_out;
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| 
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|         y_out = start + (tff ^ (start & 1));
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| 
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|         in_line  = src_data + (y_out * src_linesize);
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|         out_line = dst_data + (y_out * dst_linesize);
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| 
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|         while (y_out < end) {
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|             memcpy(out_line, in_line, linesize);
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|             y_out += 2;
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|             in_line  += src_linesize * 2;
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|             out_line += dst_linesize * 2;
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|         }
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| 
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|         y_out = start + ((!tff) ^ (start & 1));
 | |
|         out_line = dst_data + (y_out * dst_linesize);
 | |
| 
 | |
|         for (int y = y_out; y < end; y += 2) {
 | |
|             int y_prev3_in = y - 5;
 | |
|             int y_next3_in = y + 5;
 | |
|             int y_prev2_in = y - 3;
 | |
|             int y_next2_in = y + 3;
 | |
|             int y_prev_in = y - 1;
 | |
|             int y_next_in = y + 1;
 | |
|             int k;
 | |
| 
 | |
|             while (y_prev3_in < 0)
 | |
|                 y_prev3_in += 2;
 | |
| 
 | |
|             while (y_next3_in >= height)
 | |
|                 y_next3_in -= 2;
 | |
| 
 | |
|             while (y_prev2_in < 0)
 | |
|                 y_prev2_in += 2;
 | |
| 
 | |
|             while (y_next2_in >= height)
 | |
|                 y_next2_in -= 2;
 | |
| 
 | |
|             while (y_prev_in < 0)
 | |
|                 y_prev_in += 2;
 | |
| 
 | |
|             while (y_next_in >= height)
 | |
|                 y_next_in -= 2;
 | |
| 
 | |
|             prev3_line = src_data + (y_prev3_in * src_linesize);
 | |
|             next3_line = src_data + (y_next3_in * src_linesize);
 | |
| 
 | |
|             prev2_line = src_data + (y_prev2_in * src_linesize);
 | |
|             next2_line = src_data + (y_next2_in * src_linesize);
 | |
| 
 | |
|             prev_line = src_data + (y_prev_in * src_linesize);
 | |
|             next_line = src_data + (y_next_in * src_linesize);
 | |
| 
 | |
|             k = 0;
 | |
| 
 | |
|             for (int x = 0; x < width; x++) {
 | |
|                 s->interpolate(s, out_line,
 | |
|                                prev_line, next_line,
 | |
|                                prev2_line, next2_line,
 | |
|                                prev3_line, next3_line,
 | |
|                                x, width, rslope, redge, depth, &k);
 | |
|             }
 | |
| 
 | |
|             out_line += 2 * dst_linesize;
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static int filter(AVFilterContext *ctx, AVFrame *in, int64_t pts, int64_t duration)
 | |
| {
 | |
|     ESTDIFContext *s = ctx->priv;
 | |
|     AVFilterLink *outlink = ctx->outputs[0];
 | |
|     AVFrame *out;
 | |
|     ThreadData td;
 | |
| 
 | |
|     out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
 | |
|     if (!out)
 | |
|         return AVERROR(ENOMEM);
 | |
|     av_frame_copy_props(out, in);
 | |
| #if FF_API_INTERLACED_FRAME
 | |
| FF_DISABLE_DEPRECATION_WARNINGS
 | |
|     out->interlaced_frame = 0;
 | |
| FF_ENABLE_DEPRECATION_WARNINGS
 | |
| #endif
 | |
|     out->flags &= ~AV_FRAME_FLAG_INTERLACED;
 | |
|     out->pts = pts;
 | |
|     out->duration = duration;
 | |
| 
 | |
|     td.out = out; td.in = in;
 | |
|     ff_filter_execute(ctx, deinterlace_slice, &td, NULL,
 | |
|                       FFMIN(s->planeheight[1] / 2, s->nb_threads));
 | |
| 
 | |
|     if (s->mode)
 | |
|         s->field = !s->field;
 | |
| 
 | |
|     return ff_filter_frame(outlink, out);
 | |
| }
 | |
| 
 | |
| static int config_input(AVFilterLink *inlink)
 | |
| {
 | |
|     AVFilterContext *ctx = inlink->dst;
 | |
|     ESTDIFContext *s = ctx->priv;
 | |
|     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
 | |
|     int ret;
 | |
| 
 | |
|     if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
 | |
|         return ret;
 | |
| 
 | |
|     s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
 | |
|     s->planeheight[0] = s->planeheight[3] = inlink->h;
 | |
|     s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
 | |
|     s->planewidth[0] = s->planewidth[3] = inlink->w;
 | |
| 
 | |
|     if (inlink->h < 3) {
 | |
|         av_log(ctx, AV_LOG_ERROR, "Video of less than 3 lines is not supported\n");
 | |
|         return AVERROR(EINVAL);
 | |
|     }
 | |
| 
 | |
|     s->nb_planes = av_pix_fmt_count_planes(inlink->format);
 | |
|     s->nb_threads = ff_filter_get_nb_threads(ctx);
 | |
|     s->depth = desc->comp[0].depth;
 | |
|     s->interpolate = s->depth <= 8 ? interpolate_8 : interpolate_16;
 | |
|     s->mid_8[0] = mid2_8;
 | |
|     s->mid_8[1] = mid4_8;
 | |
|     s->mid_8[2] = mid6_8;
 | |
|     s->mid_16[0] = mid2_16;
 | |
|     s->mid_16[1] = mid4_16;
 | |
|     s->mid_16[2] = mid6_16;
 | |
|     s->max = (1 << (s->depth)) - 1;
 | |
| 
 | |
|     return 0;
 | |
| }
 | |
|  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
 | |
| {
 | |
|     AVFilterContext *ctx = inlink->dst;
 | |
|     ESTDIFContext *s = ctx->priv;
 | |
|     int ret;
 | |
| 
 | |
|     if (!s->prev) {
 | |
|         s->prev = in;
 | |
|         return 0;
 | |
|     }
 | |
| 
 | |
|     if ((s->deint && !(s->prev->flags & AV_FRAME_FLAG_INTERLACED)) || ctx->is_disabled) {
 | |
|         s->prev->pts *= 2;
 | |
|         s->prev->duration *= 2;
 | |
|         ret = ff_filter_frame(ctx->outputs[0], s->prev);
 | |
|         s->prev = in;
 | |
|         return ret;
 | |
|     }
 | |
| 
 | |
|     ret = filter(ctx, s->prev, s->prev->pts * 2,
 | |
|                  s->prev->duration * (s->mode ? 1 : 2));
 | |
|     if (ret < 0 || s->mode == 0) {
 | |
|         av_frame_free(&s->prev);
 | |
|         s->prev = in;
 | |
|         return ret;
 | |
|     }
 | |
| 
 | |
|     ret = filter(ctx, s->prev, s->prev->pts + in->pts, in->duration);
 | |
|     av_frame_free(&s->prev);
 | |
|     s->prev = in;
 | |
|     return ret;
 | |
| }
 | |
| 
 | |
| static int request_frame(AVFilterLink *link)
 | |
| {
 | |
|     AVFilterContext *ctx = link->src;
 | |
|     ESTDIFContext *s = ctx->priv;
 | |
|     int ret;
 | |
| 
 | |
|     if (s->eof)
 | |
|         return AVERROR_EOF;
 | |
| 
 | |
|     ret = ff_request_frame(ctx->inputs[0]);
 | |
| 
 | |
|     if (ret == AVERROR_EOF && s->prev) {
 | |
|         AVFrame *next = av_frame_clone(s->prev);
 | |
| 
 | |
|         if (!next)
 | |
|             return AVERROR(ENOMEM);
 | |
| 
 | |
|         next->pts = s->prev->pts + av_rescale_q(1, av_inv_q(ctx->outputs[0]->frame_rate),
 | |
|                                                 ctx->outputs[0]->time_base);
 | |
|         s->eof = 1;
 | |
|         ret = filter_frame(ctx->inputs[0], next);
 | |
|     } else if (ret < 0) {
 | |
|         return ret;
 | |
|     }
 | |
| 
 | |
|     return ret;
 | |
| }
 | |
| 
 | |
| static av_cold void uninit(AVFilterContext *ctx)
 | |
| {
 | |
|     ESTDIFContext *s = ctx->priv;
 | |
| 
 | |
|     av_frame_free(&s->prev);
 | |
| }
 | |
| 
 | |
| static const AVFilterPad estdif_inputs[] = {
 | |
|     {
 | |
|         .name          = "default",
 | |
|         .type          = AVMEDIA_TYPE_VIDEO,
 | |
|         .filter_frame  = filter_frame,
 | |
|         .config_props  = config_input,
 | |
|     },
 | |
| };
 | |
| 
 | |
| static const AVFilterPad estdif_outputs[] = {
 | |
|     {
 | |
|         .name          = "default",
 | |
|         .type          = AVMEDIA_TYPE_VIDEO,
 | |
|         .config_props  = config_output,
 | |
|         .request_frame = request_frame,
 | |
|     },
 | |
| };
 | |
| 
 | |
| const AVFilter ff_vf_estdif = {
 | |
|     .name          = "estdif",
 | |
|     .description   = NULL_IF_CONFIG_SMALL("Apply Edge Slope Tracing deinterlace."),
 | |
|     .priv_size     = sizeof(ESTDIFContext),
 | |
|     .priv_class    = &estdif_class,
 | |
|     .uninit        = uninit,
 | |
|     FILTER_INPUTS(estdif_inputs),
 | |
|     FILTER_OUTPUTS(estdif_outputs),
 | |
|     FILTER_PIXFMTS_ARRAY(pix_fmts),
 | |
|     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
 | |
|     .process_command = ff_filter_process_command,
 | |
| };
 | 
