1 /* 2 * Copyright (c) 2016 The WebM 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 #include <math.h> 11 #include "test/clear_system_state.h" 12 #include "test/register_state_check.h" 13 #include "third_party/googletest/src/include/gtest/gtest.h" 14 #include "./vpx_dsp_rtcd.h" 15 #include "vpx/vpx_integer.h" 16 #include "vpx_dsp/postproc.h" 17 #include "vpx_mem/vpx_mem.h" 18 19 namespace { 20 21 static const int kNoiseSize = 3072; 22 23 // TODO(jimbankoski): make width and height integers not unsigned. 24 typedef void (*AddNoiseFunc)(uint8_t *start, const int8_t *noise, 25 int blackclamp, int whiteclamp, int width, 26 int height, int pitch); 27 28 class AddNoiseTest : public ::testing::TestWithParam<AddNoiseFunc> { 29 public: 30 virtual void TearDown() { libvpx_test::ClearSystemState(); } 31 virtual ~AddNoiseTest() {} 32 }; 33 34 double stddev6(char a, char b, char c, char d, char e, char f) { 35 const double n = (a + b + c + d + e + f) / 6.0; 36 const double v = ((a - n) * (a - n) + (b - n) * (b - n) + (c - n) * (c - n) + 37 (d - n) * (d - n) + (e - n) * (e - n) + (f - n) * (f - n)) / 38 6.0; 39 return sqrt(v); 40 } 41 42 TEST_P(AddNoiseTest, CheckNoiseAdded) { 43 const int width = 64; 44 const int height = 64; 45 const int image_size = width * height; 46 int8_t noise[kNoiseSize]; 47 const int clamp = vpx_setup_noise(4.4, noise, kNoiseSize); 48 uint8_t *const s = 49 reinterpret_cast<uint8_t *>(vpx_calloc(image_size, sizeof(*s))); 50 ASSERT_TRUE(s != NULL); 51 memset(s, 99, image_size * sizeof(*s)); 52 53 ASM_REGISTER_STATE_CHECK( 54 GetParam()(s, noise, clamp, clamp, width, height, width)); 55 56 // Check to make sure we don't end up having either the same or no added 57 // noise either vertically or horizontally. 58 for (int i = 0; i < image_size - 6 * width - 6; ++i) { 59 const double hd = stddev6(s[i] - 99, s[i + 1] - 99, s[i + 2] - 99, 60 s[i + 3] - 99, s[i + 4] - 99, s[i + 5] - 99); 61 const double vd = stddev6(s[i] - 99, s[i + width] - 99, 62 s[i + 2 * width] - 99, s[i + 3 * width] - 99, 63 s[i + 4 * width] - 99, s[i + 5 * width] - 99); 64 65 EXPECT_NE(hd, 0); 66 EXPECT_NE(vd, 0); 67 } 68 69 // Initialize pixels in the image to 255 and check for roll over. 70 memset(s, 255, image_size); 71 72 ASM_REGISTER_STATE_CHECK( 73 GetParam()(s, noise, clamp, clamp, width, height, width)); 74 75 // Check to make sure don't roll over. 76 for (int i = 0; i < image_size; ++i) { 77 EXPECT_GT(static_cast<int>(s[i]), clamp) << "i = " << i; 78 } 79 80 // Initialize pixels in the image to 0 and check for roll under. 81 memset(s, 0, image_size); 82 83 ASM_REGISTER_STATE_CHECK( 84 GetParam()(s, noise, clamp, clamp, width, height, width)); 85 86 // Check to make sure don't roll under. 87 for (int i = 0; i < image_size; ++i) { 88 EXPECT_LT(static_cast<int>(s[i]), 255 - clamp) << "i = " << i; 89 } 90 91 vpx_free(s); 92 } 93 94 TEST_P(AddNoiseTest, CheckCvsAssembly) { 95 const int width = 64; 96 const int height = 64; 97 const int image_size = width * height; 98 int8_t noise[kNoiseSize]; 99 const int clamp = vpx_setup_noise(4.4, noise, kNoiseSize); 100 101 uint8_t *const s = reinterpret_cast<uint8_t *>(vpx_calloc(image_size, 1)); 102 uint8_t *const d = reinterpret_cast<uint8_t *>(vpx_calloc(image_size, 1)); 103 ASSERT_TRUE(s != NULL); 104 ASSERT_TRUE(d != NULL); 105 106 memset(s, 99, image_size); 107 memset(d, 99, image_size); 108 109 srand(0); 110 ASM_REGISTER_STATE_CHECK( 111 GetParam()(s, noise, clamp, clamp, width, height, width)); 112 srand(0); 113 ASM_REGISTER_STATE_CHECK( 114 vpx_plane_add_noise_c(d, noise, clamp, clamp, width, height, width)); 115 116 for (int i = 0; i < image_size; ++i) { 117 EXPECT_EQ(static_cast<int>(s[i]), static_cast<int>(d[i])) << "i = " << i; 118 } 119 120 vpx_free(d); 121 vpx_free(s); 122 } 123 124 INSTANTIATE_TEST_CASE_P(C, AddNoiseTest, 125 ::testing::Values(vpx_plane_add_noise_c)); 126 127 #if HAVE_SSE2 128 INSTANTIATE_TEST_CASE_P(SSE2, AddNoiseTest, 129 ::testing::Values(vpx_plane_add_noise_sse2)); 130 #endif 131 132 #if HAVE_MSA 133 INSTANTIATE_TEST_CASE_P(MSA, AddNoiseTest, 134 ::testing::Values(vpx_plane_add_noise_msa)); 135 #endif 136 } // namespace 137
