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	cc650cf029
	
	
	
		
			
			This reduces from 3 to 2 messages for the same syntax error in ffprobe, and from 4 to 3 in filters.
		
			
				
	
	
		
			383 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			383 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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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 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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|  * 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
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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 along
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|  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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|  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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|  */
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| 
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| /**
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|  * @file
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|  * MP test source, ported from MPlayer libmpcodecs/vf_test.c
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|  */
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| 
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| #include "libavutil/avstring.h"
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| #include "libavutil/opt.h"
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| #include "libavutil/parseutils.h"
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| #include "libavutil/pixdesc.h"
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| #include "avfilter.h"
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| #include "internal.h"
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| #include "formats.h"
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| #include "video.h"
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| 
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| #define WIDTH 512
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| #define HEIGHT 512
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| 
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| enum test_type {
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|     TEST_DC_LUMA,
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|     TEST_DC_CHROMA,
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|     TEST_FREQ_LUMA,
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|     TEST_FREQ_CHROMA,
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|     TEST_AMP_LUMA,
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|     TEST_AMP_CHROMA,
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|     TEST_CBP,
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|     TEST_MV,
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|     TEST_RING1,
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|     TEST_RING2,
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|     TEST_ALL,
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|     TEST_NB
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| };
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| 
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| typedef struct MPTestContext {
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|     const AVClass *class;
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|     unsigned int frame_nb;
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|     AVRational time_base;
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|     int64_t pts, max_pts;
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|     int hsub, vsub;
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|     char *size, *rate, *duration;
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|     enum test_type test;
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| } MPTestContext;
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| 
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| #define OFFSET(x) offsetof(MPTestContext, x)
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| 
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| static const AVOption mptestsrc_options[]= {
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|     { "rate",     "set video rate",     OFFSET(rate),     AV_OPT_TYPE_STRING, {.str = "25"},      0, 0 },
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|     { "r",        "set video rate",     OFFSET(rate),     AV_OPT_TYPE_STRING, {.str = "25"},      0, 0 },
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|     { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL},      0, 0 },
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|     { "d",        "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL},      0, 0 },
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| 
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|     { "test", "set test to perform", OFFSET(test),  AV_OPT_TYPE_INT,   {.dbl=TEST_ALL}, 0, INT_MAX, 0, "test" },
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|     { "t",    "set test to perform", OFFSET(test),  AV_OPT_TYPE_INT,   {.dbl=TEST_ALL}, 0, INT_MAX, 0, "test" },
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|     { "dc_luma",     "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_DC_LUMA},     INT_MIN, INT_MAX, 0, "test" },
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|     { "dc_chroma",   "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_DC_CHROMA},   INT_MIN, INT_MAX, 0, "test" },
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|     { "freq_luma",   "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_FREQ_LUMA},   INT_MIN, INT_MAX, 0, "test" },
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|     { "freq_chroma", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, 0, "test" },
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|     { "amp_luma",    "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_AMP_LUMA},    INT_MIN, INT_MAX, 0, "test" },
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|     { "amp_chroma",  "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_AMP_CHROMA},  INT_MIN, INT_MAX, 0, "test" },
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|     { "cbp",         "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_CBP},         INT_MIN, INT_MAX, 0, "test" },
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|     { "mv",          "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_MV},          INT_MIN, INT_MAX, 0, "test" },
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|     { "ring1",       "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_RING1},       INT_MIN, INT_MAX, 0, "test" },
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|     { "ring2",       "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_RING2},       INT_MIN, INT_MAX, 0, "test" },
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|     { "all",         "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_ALL},         INT_MIN, INT_MAX, 0, "test" },
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| 
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|     { NULL },
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| };
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| 
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| AVFILTER_DEFINE_CLASS(mptestsrc);
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| 
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| static double c[64];
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| 
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| static void init_idct(void)
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| {
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|     int i, j;
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| 
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|     for (i = 0; i < 8; i++) {
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|         double s = i == 0 ? sqrt(0.125) : 0.5;
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| 
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|         for (j = 0; j < 8; j++)
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|             c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));
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|     }
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| }
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| 
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| static void idct(uint8_t *dst, int dst_linesize, int src[64])
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| {
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|     int i, j, k;
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|     double tmp[64];
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| 
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|     for (i = 0; i < 8; i++) {
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|         for (j = 0; j < 8; j++) {
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|             double sum = 0.0;
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| 
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|             for (k = 0; k < 8; k++)
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|                 sum += c[k*8+j] * src[8*i+k];
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| 
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|             tmp[8*i+j] = sum;
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|         }
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|     }
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| 
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|     for (j = 0; j < 8; j++) {
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|         for (i = 0; i < 8; i++) {
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|             double sum = 0.0;
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| 
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|             for (k = 0; k < 8; k++)
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|                 sum += c[k*8+i]*tmp[8*k+j];
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| 
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|             dst[dst_linesize*i + j] = av_clip((int)floor(sum+0.5), 0, 255);
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|         }
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|     }
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| }
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| 
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| static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)
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| {
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|     int x, y;
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| 
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|     for (y = 0; y < h; y++)
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|         for (x = 0; x < w; x++)
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|             dst[x + y*dst_linesize] = color;
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| }
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| 
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| static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)
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| {
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|     int src[64];
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| 
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|     memset(src, 0, 64*sizeof(int));
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|     src[0] = dc;
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|     if (amp)
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|         src[freq] = amp;
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|     idct(dst, dst_linesize, src);
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| }
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| 
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| static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)
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| {
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|     if (cbp&1)  draw_basis(dst[0]                    , dst_linesize[0], amp, 1, dc);
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|     if (cbp&2)  draw_basis(dst[0]+8                  , dst_linesize[0], amp, 1, dc);
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|     if (cbp&4)  draw_basis(dst[0]+  8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
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|     if (cbp&8)  draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
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|     if (cbp&16) draw_basis(dst[1]                    , dst_linesize[1], amp, 1, dc);
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|     if (cbp&32) draw_basis(dst[2]                    , dst_linesize[2], amp, 1, dc);
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| }
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| 
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| static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)
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| {
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|     const int step = FFMAX(256/(w*h/256), 1);
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|     int x, y, color = off;
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| 
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|     for (y = 0; y < h; y += 16) {
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|         for (x = 0; x < w; x += 16) {
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|             draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
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|             color += step;
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|         }
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|     }
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| }
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| 
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| static void freq_test(uint8_t *dst, int dst_linesize, int off)
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| {
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|     int x, y, freq = 0;
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| 
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|     for (y = 0; y < 8*16; y += 16) {
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|         for (x = 0; x < 8*16; x += 16) {
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|             draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);
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|             freq++;
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|         }
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|     }
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| }
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| 
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| static void amp_test(uint8_t *dst, int dst_linesize, int off)
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| {
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|     int x, y, amp = off;
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| 
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|     for (y = 0; y < 16*16; y += 16) {
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|         for (x = 0; x < 16*16; x += 16) {
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|             draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);
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|             amp++;
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|         }
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|     }
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| }
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| 
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| static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)
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| {
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|     int x, y, cbp = 0;
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| 
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|     for (y = 0; y < 16*8; y += 16) {
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|         for (x = 0; x < 16*8; x += 16) {
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|             uint8_t *dst1[3];
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|             dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];
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|             dst1[1] = dst[1] + x   + y*  dst_linesize[1];
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|             dst1[2] = dst[2] + x   + y*  dst_linesize[2];
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| 
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|             draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);
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|             cbp++;
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|         }
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|     }
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| }
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| 
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| static void mv_test(uint8_t *dst, int dst_linesize, int off)
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| {
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|     int x, y;
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| 
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|     for (y = 0; y < 16*16; y++) {
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|         if (y&16)
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|             continue;
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|         for (x = 0; x < 16*16; x++)
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|             dst[x + y*dst_linesize] = x + off*8/(y/32+1);
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|     }
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| }
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| 
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| static void ring1_test(uint8_t *dst, int dst_linesize, int off)
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| {
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|     int x, y, color = 0;
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| 
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|     for (y = off; y < 16*16; y += 16) {
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|         for (x = off; x < 16*16; x += 16) {
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|             draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);
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|             color++;
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|         }
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|     }
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| }
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| 
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| static void ring2_test(uint8_t *dst, int dst_linesize, int off)
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| {
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|     int x, y;
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| 
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|     for (y = 0; y < 16*16; y++) {
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|         for (x = 0; x < 16*16; x++) {
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|             double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));
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|             double r = d/20 - (int)(d/20);
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|             if (r < off/30.0) {
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|                 dst[x + y*dst_linesize]     = 255;
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|                 dst[x + y*dst_linesize+256] = 0;
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|             } else {
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|                 dst[x + y*dst_linesize]     = x;
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|                 dst[x + y*dst_linesize+256] = x;
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|             }
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|         }
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|     }
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| }
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| 
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| static av_cold int init(AVFilterContext *ctx, const char *args)
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| {
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|     MPTestContext *test = ctx->priv;
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|     AVRational frame_rate_q;
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|     int64_t duration = -1;
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|     int ret;
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| 
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|     test->class = &mptestsrc_class;
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|     av_opt_set_defaults(test);
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| 
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|     if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0)
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|         return ret;
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| 
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|     if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0) {
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|         av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
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|         return ret;
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|     }
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| 
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|     if ((test->duration) && (ret = av_parse_time(&duration, test->duration, 1)) < 0) {
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|         av_log(ctx, AV_LOG_ERROR, "Invalid duration: '%s'\n", test->duration);
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|         return ret;
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|     }
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| 
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|     test->time_base.num = frame_rate_q.den;
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|     test->time_base.den = frame_rate_q.num;
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|     test->max_pts = duration >= 0 ?
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|         av_rescale_q(duration, AV_TIME_BASE_Q, test->time_base) : -1;
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|     test->frame_nb = 0;
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|     test->pts = 0;
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| 
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|     av_log(ctx, AV_LOG_VERBOSE, "rate:%d/%d duration:%f\n",
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|            frame_rate_q.num, frame_rate_q.den,
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|            duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base));
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|     init_idct();
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| 
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|     return 0;
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| }
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| 
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| static int config_props(AVFilterLink *outlink)
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| {
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|     AVFilterContext *ctx = outlink->src;
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|     MPTestContext *test = ctx->priv;
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|     const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[outlink->format];
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| 
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|     test->hsub = pix_desc->log2_chroma_w;
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|     test->vsub = pix_desc->log2_chroma_h;
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| 
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|     outlink->w = WIDTH;
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|     outlink->h = HEIGHT;
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|     outlink->time_base = test->time_base;
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| 
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|     return 0;
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| }
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| 
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| static int query_formats(AVFilterContext *ctx)
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| {
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|     static const enum PixelFormat pix_fmts[] = {
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|         PIX_FMT_YUV420P, PIX_FMT_NONE
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|     };
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| 
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|     ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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|     return 0;
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| }
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| 
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| static int request_frame(AVFilterLink *outlink)
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| {
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|     MPTestContext *test = outlink->src->priv;
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|     AVFilterBufferRef *picref;
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|     int w = WIDTH, h = HEIGHT, ch = h>>test->vsub;
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|     unsigned int frame = test->frame_nb;
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|     enum test_type tt = test->test;
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| 
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|     if (test->max_pts >= 0 && test->pts > test->max_pts)
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|         return AVERROR_EOF;
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|     picref = ff_get_video_buffer(outlink, AV_PERM_WRITE, w, h);
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|     picref->pts = test->pts++;
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| 
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|     // clean image
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|     memset(picref->data[0], 0,   picref->linesize[0] * h);
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|     memset(picref->data[1], 128, picref->linesize[1] * ch);
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|     memset(picref->data[2], 128, picref->linesize[2] * ch);
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| 
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|     if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */
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|         tt = (frame/30)%(TEST_NB-1);
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| 
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|     switch (tt) {
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|     case TEST_DC_LUMA:       dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
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|     case TEST_DC_CHROMA:     dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
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|     case TEST_FREQ_LUMA:   freq_test(picref->data[0], picref->linesize[0], frame%30); break;
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|     case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
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|     case TEST_AMP_LUMA:     amp_test(picref->data[0], picref->linesize[0], frame%30); break;
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|     case TEST_AMP_CHROMA:   amp_test(picref->data[1], picref->linesize[1], frame%30); break;
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|     case TEST_CBP:          cbp_test(picref->data   , picref->linesize   , frame%30); break;
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|     case TEST_MV:            mv_test(picref->data[0], picref->linesize[0], frame%30); break;
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|     case TEST_RING1:      ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
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|     case TEST_RING2:      ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
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|     }
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| 
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|     test->frame_nb++;
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| 
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|     ff_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
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|     ff_draw_slice(outlink, 0, picref->video->h, 1);
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|     ff_end_frame(outlink);
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|     avfilter_unref_buffer(picref);
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| 
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|     return 0;
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| }
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| 
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| AVFilter avfilter_vsrc_mptestsrc = {
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|     .name      = "mptestsrc",
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|     .description = NULL_IF_CONFIG_SMALL("Generate various test pattern."),
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|     .priv_size = sizeof(MPTestContext),
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|     .init      = init,
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| 
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|     .query_formats   = query_formats,
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| 
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|     .inputs    = (const AVFilterPad[]) {{ .name = NULL}},
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| 
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|     .outputs   = (const AVFilterPad[]) {{ .name = "default",
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|                                     .type = AVMEDIA_TYPE_VIDEO,
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|                                     .request_frame = request_frame,
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|                                     .config_props  = config_props, },
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|                                   { .name = NULL }},
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| };
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