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comparison: media/libyuv/unit_test/scale_test.cc
media/libyuv/unit_test/scale_test.cc
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| -1:000000000000 | 0:2a857577510f |
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| 1 /* | |
| 2 * Copyright 2011 The LibYuv Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <stdlib.h> | |
| 12 #include <time.h> | |
| 13 | |
| 14 #include "libyuv/cpu_id.h" | |
| 15 #include "libyuv/scale.h" | |
| 16 #include "../unit_test/unit_test.h" | |
| 17 | |
| 18 namespace libyuv { | |
| 19 | |
| 20 // Test scaling with C vs Opt and return maximum pixel difference. 0 = exact. | |
| 21 static int TestFilter(int src_width, int src_height, | |
| 22 int dst_width, int dst_height, | |
| 23 FilterMode f, int benchmark_iterations) { | |
| 24 int i, j; | |
| 25 const int b = 128; | |
| 26 int src_width_uv = (Abs(src_width) + 1) >> 1; | |
| 27 int src_height_uv = (Abs(src_height) + 1) >> 1; | |
| 28 | |
| 29 int src_y_plane_size = (Abs(src_width) + b * 2) * (Abs(src_height) + b * 2); | |
| 30 int src_uv_plane_size = (src_width_uv + b * 2) * (src_height_uv + b * 2); | |
| 31 | |
| 32 int src_stride_y = b * 2 + Abs(src_width); | |
| 33 int src_stride_uv = b * 2 + src_width_uv; | |
| 34 | |
| 35 align_buffer_page_end(src_y, src_y_plane_size) | |
| 36 align_buffer_page_end(src_u, src_uv_plane_size) | |
| 37 align_buffer_page_end(src_v, src_uv_plane_size) | |
| 38 srandom(time(NULL)); | |
| 39 MemRandomize(src_y, src_y_plane_size); | |
| 40 MemRandomize(src_u, src_uv_plane_size); | |
| 41 MemRandomize(src_v, src_uv_plane_size); | |
| 42 | |
| 43 int dst_width_uv = (dst_width + 1) >> 1; | |
| 44 int dst_height_uv = (dst_height + 1) >> 1; | |
| 45 | |
| 46 int dst_y_plane_size = (dst_width + b * 2) * (dst_height + b * 2); | |
| 47 int dst_uv_plane_size = (dst_width_uv + b * 2) * (dst_height_uv + b * 2); | |
| 48 | |
| 49 int dst_stride_y = b * 2 + dst_width; | |
| 50 int dst_stride_uv = b * 2 + dst_width_uv; | |
| 51 | |
| 52 align_buffer_page_end(dst_y_c, dst_y_plane_size) | |
| 53 align_buffer_page_end(dst_u_c, dst_uv_plane_size) | |
| 54 align_buffer_page_end(dst_v_c, dst_uv_plane_size) | |
| 55 align_buffer_page_end(dst_y_opt, dst_y_plane_size) | |
| 56 align_buffer_page_end(dst_u_opt, dst_uv_plane_size) | |
| 57 align_buffer_page_end(dst_v_opt, dst_uv_plane_size) | |
| 58 | |
| 59 | |
| 60 MaskCpuFlags(0); // Disable all CPU optimization. | |
| 61 double c_time = get_time(); | |
| 62 I420Scale(src_y + (src_stride_y * b) + b, src_stride_y, | |
| 63 src_u + (src_stride_uv * b) + b, src_stride_uv, | |
| 64 src_v + (src_stride_uv * b) + b, src_stride_uv, | |
| 65 src_width, src_height, | |
| 66 dst_y_c + (dst_stride_y * b) + b, dst_stride_y, | |
| 67 dst_u_c + (dst_stride_uv * b) + b, dst_stride_uv, | |
| 68 dst_v_c + (dst_stride_uv * b) + b, dst_stride_uv, | |
| 69 dst_width, dst_height, f); | |
| 70 c_time = (get_time() - c_time); | |
| 71 | |
| 72 MaskCpuFlags(-1); // Enable all CPU optimization. | |
| 73 double opt_time = get_time(); | |
| 74 for (i = 0; i < benchmark_iterations; ++i) { | |
| 75 I420Scale(src_y + (src_stride_y * b) + b, src_stride_y, | |
| 76 src_u + (src_stride_uv * b) + b, src_stride_uv, | |
| 77 src_v + (src_stride_uv * b) + b, src_stride_uv, | |
| 78 src_width, src_height, | |
| 79 dst_y_opt + (dst_stride_y * b) + b, dst_stride_y, | |
| 80 dst_u_opt + (dst_stride_uv * b) + b, dst_stride_uv, | |
| 81 dst_v_opt + (dst_stride_uv * b) + b, dst_stride_uv, | |
| 82 dst_width, dst_height, f); | |
| 83 } | |
| 84 opt_time = (get_time() - opt_time) / benchmark_iterations; | |
| 85 // Report performance of C vs OPT | |
| 86 printf("filter %d - %8d us C - %8d us OPT\n", | |
| 87 f, | |
| 88 static_cast<int>(c_time * 1e6), | |
| 89 static_cast<int>(opt_time * 1e6)); | |
| 90 | |
| 91 // C version may be a little off from the optimized. Order of | |
| 92 // operations may introduce rounding somewhere. So do a difference | |
| 93 // of the buffers and look to see that the max difference isn't | |
| 94 // over 2. | |
| 95 int max_diff = 0; | |
| 96 for (i = b; i < (dst_height + b); ++i) { | |
| 97 for (j = b; j < (dst_width + b); ++j) { | |
| 98 int abs_diff = Abs(dst_y_c[(i * dst_stride_y) + j] - | |
| 99 dst_y_opt[(i * dst_stride_y) + j]); | |
| 100 if (abs_diff > max_diff) { | |
| 101 max_diff = abs_diff; | |
| 102 } | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 for (i = b; i < (dst_height_uv + b); ++i) { | |
| 107 for (j = b; j < (dst_width_uv + b); ++j) { | |
| 108 int abs_diff = Abs(dst_u_c[(i * dst_stride_uv) + j] - | |
| 109 dst_u_opt[(i * dst_stride_uv) + j]); | |
| 110 if (abs_diff > max_diff) { | |
| 111 max_diff = abs_diff; | |
| 112 } | |
| 113 abs_diff = Abs(dst_v_c[(i * dst_stride_uv) + j] - | |
| 114 dst_v_opt[(i * dst_stride_uv) + j]); | |
| 115 if (abs_diff > max_diff) { | |
| 116 max_diff = abs_diff; | |
| 117 } | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 free_aligned_buffer_page_end(dst_y_c) | |
| 122 free_aligned_buffer_page_end(dst_u_c) | |
| 123 free_aligned_buffer_page_end(dst_v_c) | |
| 124 free_aligned_buffer_page_end(dst_y_opt) | |
| 125 free_aligned_buffer_page_end(dst_u_opt) | |
| 126 free_aligned_buffer_page_end(dst_v_opt) | |
| 127 | |
| 128 free_aligned_buffer_page_end(src_y) | |
| 129 free_aligned_buffer_page_end(src_u) | |
| 130 free_aligned_buffer_page_end(src_v) | |
| 131 | |
| 132 return max_diff; | |
| 133 } | |
| 134 | |
| 135 #define TEST_FACTOR1(name, filter, hfactor, vfactor, max_diff) \ | |
| 136 TEST_F(libyuvTest, ScaleDownBy##name##_##filter) { \ | |
| 137 int diff = TestFilter(benchmark_width_, benchmark_height_, \ | |
| 138 Abs(benchmark_width_) * hfactor, \ | |
| 139 Abs(benchmark_height_) * vfactor, \ | |
| 140 kFilter##filter, benchmark_iterations_); \ | |
| 141 EXPECT_LE(diff, max_diff); \ | |
| 142 } | |
| 143 | |
| 144 // Test a scale factor with all 4 filters. Expect unfiltered to be exact, but | |
| 145 // filtering is different fixed point implementations for SSSE3, Neon and C. | |
| 146 #define TEST_FACTOR(name, hfactor, vfactor) \ | |
| 147 TEST_FACTOR1(name, None, hfactor, vfactor, 0) \ | |
| 148 TEST_FACTOR1(name, Linear, hfactor, vfactor, 3) \ | |
| 149 TEST_FACTOR1(name, Bilinear, hfactor, vfactor, 3) \ | |
| 150 TEST_FACTOR1(name, Box, hfactor, vfactor, 3) \ | |
| 151 | |
| 152 TEST_FACTOR(2, 1 / 2, 1 / 2) | |
| 153 TEST_FACTOR(4, 1 / 4, 1 / 4) | |
| 154 TEST_FACTOR(8, 1 / 8, 1 / 8) | |
| 155 TEST_FACTOR(3by4, 3 / 4, 3 / 4) | |
| 156 #undef TEST_FACTOR1 | |
| 157 #undef TEST_FACTOR | |
| 158 | |
| 159 #define TEST_SCALETO1(name, width, height, filter, max_diff) \ | |
| 160 TEST_F(libyuvTest, name##To##width##x##height##_##filter) { \ | |
| 161 int diff = TestFilter(benchmark_width_, benchmark_height_, \ | |
| 162 width, height, \ | |
| 163 kFilter##filter, benchmark_iterations_); \ | |
| 164 EXPECT_LE(diff, max_diff); \ | |
| 165 } \ | |
| 166 TEST_F(libyuvTest, name##From##width##x##height##_##filter) { \ | |
| 167 int diff = TestFilter(width, height, \ | |
| 168 Abs(benchmark_width_), Abs(benchmark_height_), \ | |
| 169 kFilter##filter, benchmark_iterations_); \ | |
| 170 EXPECT_LE(diff, max_diff); \ | |
| 171 } | |
| 172 | |
| 173 // Test scale to a specified size with all 4 filters. | |
| 174 #define TEST_SCALETO(name, width, height) \ | |
| 175 TEST_SCALETO1(name, width, height, None, 0) \ | |
| 176 TEST_SCALETO1(name, width, height, Linear, 3) \ | |
| 177 TEST_SCALETO1(name, width, height, Bilinear, 3) \ | |
| 178 TEST_SCALETO1(name, width, height, Box, 3) | |
| 179 | |
| 180 TEST_SCALETO(Scale, 1, 1) | |
| 181 TEST_SCALETO(Scale, 320, 240) | |
| 182 TEST_SCALETO(Scale, 352, 288) | |
| 183 TEST_SCALETO(Scale, 640, 360) | |
| 184 TEST_SCALETO(Scale, 1280, 720) | |
| 185 #undef TEST_SCALETO1 | |
| 186 #undef TEST_SCALETO | |
| 187 | |
| 188 } // namespace libyuv |
