media/libyuv/unit_test/scale_test.cc@b8a032363ba2
media/libyuv/unit_test/scale_test.cc
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
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 */
11 #include <stdlib.h>
12 #include <time.h>
14 #include "libyuv/cpu_id.h"
15 #include "libyuv/scale.h"
16 #include "../unit_test/unit_test.h"
18 namespace libyuv {
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;
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);
32 int src_stride_y = b * 2 + Abs(src_width);
33 int src_stride_uv = b * 2 + src_width_uv;
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);
43 int dst_width_uv = (dst_width + 1) >> 1;
44 int dst_height_uv = (dst_height + 1) >> 1;
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);
49 int dst_stride_y = b * 2 + dst_width;
50 int dst_stride_uv = b * 2 + dst_width_uv;
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)
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);
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));
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 }
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 }
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)
128 free_aligned_buffer_page_end(src_y)
129 free_aligned_buffer_page_end(src_u)
130 free_aligned_buffer_page_end(src_v)
132 return max_diff;
133 }
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 }
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) \
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
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 }
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)
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
188 } // namespace libyuv
