зеркало из https://github.com/mozilla/gecko-dev.git
271 строка
11 KiB
C++
271 строка
11 KiB
C++
/*
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* Copyright 2011 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdlib.h>
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#include <time.h>
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#include "libyuv/cpu_id.h"
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#include "libyuv/scale_argb.h"
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#include "libyuv/row.h"
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#include "../unit_test/unit_test.h"
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namespace libyuv {
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// Test scaling with C vs Opt and return maximum pixel difference. 0 = exact.
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static int ARGBTestFilter(int src_width, int src_height,
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int dst_width, int dst_height,
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FilterMode f, int benchmark_iterations) {
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const int b = 128;
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int i, j;
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int src_argb_plane_size = (Abs(src_width) + b * 2) *
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(Abs(src_height) + b * 2) * 4;
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int src_stride_argb = (b * 2 + Abs(src_width)) * 4;
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align_buffer_64(src_argb, src_argb_plane_size);
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srandom(time(NULL));
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MemRandomize(src_argb, src_argb_plane_size);
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int dst_argb_plane_size = (dst_width + b * 2) * (dst_height + b * 2) * 4;
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int dst_stride_argb = (b * 2 + dst_width) * 4;
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align_buffer_64(dst_argb_c, dst_argb_plane_size);
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align_buffer_64(dst_argb_opt, dst_argb_plane_size);
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memset(dst_argb_c, 2, dst_argb_plane_size);
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memset(dst_argb_opt, 3, dst_argb_plane_size);
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// Warm up both versions for consistent benchmarks.
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MaskCpuFlags(0); // Disable all CPU optimization.
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ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
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src_width, src_height,
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dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
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dst_width, dst_height, f);
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MaskCpuFlags(-1); // Enable all CPU optimization.
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ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
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src_width, src_height,
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dst_argb_opt + (dst_stride_argb * b) + b * 4, dst_stride_argb,
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dst_width, dst_height, f);
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MaskCpuFlags(0); // Disable all CPU optimization.
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double c_time = get_time();
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ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
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src_width, src_height,
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dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
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dst_width, dst_height, f);
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c_time = (get_time() - c_time);
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MaskCpuFlags(-1); // Enable all CPU optimization.
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double opt_time = get_time();
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for (i = 0; i < benchmark_iterations; ++i) {
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ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
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src_width, src_height,
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dst_argb_opt + (dst_stride_argb * b) + b * 4, dst_stride_argb,
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dst_width, dst_height, f);
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}
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opt_time = (get_time() - opt_time) / benchmark_iterations;
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// Report performance of C vs OPT
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printf("filter %d - %8d us C - %8d us OPT\n",
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f, static_cast<int>(c_time * 1e6), static_cast<int>(opt_time * 1e6));
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// C version may be a little off from the optimized. Order of
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// operations may introduce rounding somewhere. So do a difference
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// of the buffers and look to see that the max difference isn't
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// over 2.
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int max_diff = 0;
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for (i = b; i < (dst_height + b); ++i) {
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for (j = b * 4; j < (dst_width + b) * 4; ++j) {
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int abs_diff = Abs(dst_argb_c[(i * dst_stride_argb) + j] -
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dst_argb_opt[(i * dst_stride_argb) + j]);
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if (abs_diff > max_diff) {
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max_diff = abs_diff;
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}
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}
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}
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free_aligned_buffer_64(dst_argb_c);
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free_aligned_buffer_64(dst_argb_opt);
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free_aligned_buffer_64(src_argb);
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return max_diff;
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}
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static const int kTileX = 8;
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static const int kTileY = 8;
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static int TileARGBScale(const uint8* src_argb, int src_stride_argb,
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int src_width, int src_height,
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uint8* dst_argb, int dst_stride_argb,
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int dst_width, int dst_height,
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FilterMode filtering) {
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for (int y = 0; y < dst_height; y += kTileY) {
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for (int x = 0; x < dst_width; x += kTileX) {
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int clip_width = kTileX;
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if (x + clip_width > dst_width) {
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clip_width = dst_width - x;
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}
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int clip_height = kTileY;
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if (y + clip_height > dst_height) {
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clip_height = dst_height - y;
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}
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int r = ARGBScaleClip(src_argb, src_stride_argb,
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src_width, src_height,
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dst_argb, dst_stride_argb,
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dst_width, dst_height,
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x, y, clip_width, clip_height, filtering);
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if (r) {
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return r;
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}
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}
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}
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return 0;
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}
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static int ARGBClipTestFilter(int src_width, int src_height,
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int dst_width, int dst_height,
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FilterMode f, int benchmark_iterations) {
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const int b = 128;
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int src_argb_plane_size = (Abs(src_width) + b * 2) *
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(Abs(src_height) + b * 2) * 4;
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int src_stride_argb = (b * 2 + Abs(src_width)) * 4;
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align_buffer_64(src_argb, src_argb_plane_size);
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memset(src_argb, 1, src_argb_plane_size);
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int dst_argb_plane_size = (dst_width + b * 2) * (dst_height + b * 2) * 4;
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int dst_stride_argb = (b * 2 + dst_width) * 4;
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srandom(time(NULL));
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int i, j;
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for (i = b; i < (Abs(src_height) + b); ++i) {
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for (j = b; j < (Abs(src_width) + b) * 4; ++j) {
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src_argb[(i * src_stride_argb) + j] = (random() & 0xff);
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}
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}
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align_buffer_64(dst_argb_c, dst_argb_plane_size);
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align_buffer_64(dst_argb_opt, dst_argb_plane_size);
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memset(dst_argb_c, 2, dst_argb_plane_size);
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memset(dst_argb_opt, 3, dst_argb_plane_size);
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// Do full image, no clipping.
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double c_time = get_time();
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ARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
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src_width, src_height,
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dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
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dst_width, dst_height, f);
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c_time = (get_time() - c_time);
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// Do tiled image, clipping scale to a tile at a time.
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double opt_time = get_time();
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for (i = 0; i < benchmark_iterations; ++i) {
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TileARGBScale(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
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src_width, src_height,
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dst_argb_opt + (dst_stride_argb * b) + b * 4, dst_stride_argb,
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dst_width, dst_height, f);
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}
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opt_time = (get_time() - opt_time) / benchmark_iterations;
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// Report performance of Full vs Tiled.
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printf("filter %d - %8d us Full - %8d us Tiled\n",
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f, static_cast<int>(c_time * 1e6), static_cast<int>(opt_time * 1e6));
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// Compare full scaled image vs tiled image.
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int max_diff = 0;
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for (i = b; i < (dst_height + b); ++i) {
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for (j = b * 4; j < (dst_width + b) * 4; ++j) {
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int abs_diff = Abs(dst_argb_c[(i * dst_stride_argb) + j] -
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dst_argb_opt[(i * dst_stride_argb) + j]);
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if (abs_diff > max_diff) {
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max_diff = abs_diff;
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}
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}
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}
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free_aligned_buffer_64(dst_argb_c);
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free_aligned_buffer_64(dst_argb_opt);
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free_aligned_buffer_64(src_argb);
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return max_diff;
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}
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#define TEST_FACTOR1(name, filter, hfactor, vfactor, max_diff) \
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TEST_F(libyuvTest, ARGBScaleDownBy##name##_##filter) { \
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int diff = ARGBTestFilter(benchmark_width_, benchmark_height_, \
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Abs(benchmark_width_) * hfactor, \
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Abs(benchmark_height_) * vfactor, \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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} \
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TEST_F(libyuvTest, ARGBScaleDownClipBy##name##_##filter) { \
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int diff = ARGBClipTestFilter(benchmark_width_, benchmark_height_, \
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Abs(benchmark_width_) * hfactor, \
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Abs(benchmark_height_) * vfactor, \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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}
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// Test a scale factor with 2 filters. Expect unfiltered to be exact, but
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// filtering is different fixed point implementations for SSSE3, Neon and C.
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#define TEST_FACTOR(name, hfactor, vfactor) \
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TEST_FACTOR1(name, None, hfactor, vfactor, 2) \
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TEST_FACTOR1(name, Linear, hfactor, vfactor, 2) \
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TEST_FACTOR1(name, Bilinear, hfactor, vfactor, 2) \
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TEST_FACTOR1(name, Box, hfactor, vfactor, 2)
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TEST_FACTOR(2, 1 / 2, 1 / 2)
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TEST_FACTOR(4, 1 / 4, 1 / 4)
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TEST_FACTOR(8, 1 / 8, 1 / 8)
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TEST_FACTOR(3by4, 3 / 4, 3 / 4)
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#undef TEST_FACTOR1
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#undef TEST_FACTOR
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#define TEST_SCALETO1(name, width, height, filter, max_diff) \
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TEST_F(libyuvTest, name##To##width##x##height##_##filter) { \
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int diff = ARGBTestFilter(benchmark_width_, benchmark_height_, \
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width, height, \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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} \
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TEST_F(libyuvTest, name##From##width##x##height##_##filter) { \
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int diff = ARGBTestFilter(width, height, \
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Abs(benchmark_width_), Abs(benchmark_height_), \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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} \
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TEST_F(libyuvTest, name##ClipTo##width##x##height##_##filter) { \
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int diff = ARGBClipTestFilter(benchmark_width_, benchmark_height_, \
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width, height, \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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} \
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TEST_F(libyuvTest, name##ClipFrom##width##x##height##_##filter) { \
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int diff = ARGBClipTestFilter(width, height, \
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Abs(benchmark_width_), Abs(benchmark_height_), \
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kFilter##filter, benchmark_iterations_); \
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EXPECT_LE(diff, max_diff); \
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}
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/// Test scale to a specified size with all 4 filters.
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#define TEST_SCALETO(name, width, height) \
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TEST_SCALETO1(name, width, height, None, 0) \
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TEST_SCALETO1(name, width, height, Linear, 3) \
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TEST_SCALETO1(name, width, height, Bilinear, 3) \
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TEST_SCALETO1(name, width, height, Box, 3)
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TEST_SCALETO(ARGBScale, 1, 1)
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TEST_SCALETO(ARGBScale, 320, 240)
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TEST_SCALETO(ARGBScale, 352, 288)
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TEST_SCALETO(ARGBScale, 640, 360)
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TEST_SCALETO(ARGBScale, 1280, 720)
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#undef TEST_SCALETO1
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#undef TEST_SCALETO
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} // namespace libyuv
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