ref: f38616e1a21a64617c790f26a638097ff0e5ad3d
dir: /test/add_noise_test.cc/
/* * Copyright (c) 2016 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include <math.h> #include "test/clear_system_state.h" #include "test/register_state_check.h" #include "third_party/googletest/src/include/gtest/gtest.h" #include "./vpx_dsp_rtcd.h" #include "vpx/vpx_integer.h" #include "vpx_dsp/postproc.h" #include "vpx_mem/vpx_mem.h" namespace { static const int kNoiseSize = 3072; // TODO(jimbankoski): make width and height integers not unsigned. typedef void (*AddNoiseFunc)(uint8_t *start, const int8_t *noise, int blackclamp, int whiteclamp, int width, int height, int pitch); class AddNoiseTest : public ::testing::TestWithParam<AddNoiseFunc> { public: virtual void TearDown() { libvpx_test::ClearSystemState(); } virtual ~AddNoiseTest() {} }; double stddev6(char a, char b, char c, char d, char e, char f) { const double n = (a + b + c + d + e + f) / 6.0; const double v = ((a - n) * (a - n) + (b - n) * (b - n) + (c - n) * (c - n) + (d - n) * (d - n) + (e - n) * (e - n) + (f - n) * (f - n)) / 6.0; return sqrt(v); } TEST_P(AddNoiseTest, CheckNoiseAdded) { const int width = 64; const int height = 64; const int image_size = width * height; int8_t noise[kNoiseSize]; const int clamp = vpx_setup_noise(4.4, noise, kNoiseSize); uint8_t *const s = reinterpret_cast<uint8_t *>(vpx_calloc(image_size, sizeof(*s))); ASSERT_TRUE(s != NULL); memset(s, 99, image_size * sizeof(*s)); ASM_REGISTER_STATE_CHECK( GetParam()(s, noise, clamp, clamp, width, height, width)); // Check to make sure we don't end up having either the same or no added // noise either vertically or horizontally. for (int i = 0; i < image_size - 6 * width - 6; ++i) { const double hd = stddev6(s[i] - 99, s[i + 1] - 99, s[i + 2] - 99, s[i + 3] - 99, s[i + 4] - 99, s[i + 5] - 99); const double vd = stddev6(s[i] - 99, s[i + width] - 99, s[i + 2 * width] - 99, s[i + 3 * width] - 99, s[i + 4 * width] - 99, s[i + 5 * width] - 99); EXPECT_NE(hd, 0); EXPECT_NE(vd, 0); } // Initialize pixels in the image to 255 and check for roll over. memset(s, 255, image_size); ASM_REGISTER_STATE_CHECK( GetParam()(s, noise, clamp, clamp, width, height, width)); // Check to make sure don't roll over. for (int i = 0; i < image_size; ++i) { EXPECT_GT(static_cast<int>(s[i]), clamp) << "i = " << i; } // Initialize pixels in the image to 0 and check for roll under. memset(s, 0, image_size); ASM_REGISTER_STATE_CHECK( GetParam()(s, noise, clamp, clamp, width, height, width)); // Check to make sure don't roll under. for (int i = 0; i < image_size; ++i) { EXPECT_LT(static_cast<int>(s[i]), 255 - clamp) << "i = " << i; } vpx_free(s); } TEST_P(AddNoiseTest, CheckCvsAssembly) { const int width = 64; const int height = 64; const int image_size = width * height; int8_t noise[kNoiseSize]; const int clamp = vpx_setup_noise(4.4, noise, kNoiseSize); uint8_t *const s = reinterpret_cast<uint8_t *>(vpx_calloc(image_size, 1)); uint8_t *const d = reinterpret_cast<uint8_t *>(vpx_calloc(image_size, 1)); ASSERT_TRUE(s != NULL); ASSERT_TRUE(d != NULL); memset(s, 99, image_size); memset(d, 99, image_size); srand(0); ASM_REGISTER_STATE_CHECK( GetParam()(s, noise, clamp, clamp, width, height, width)); srand(0); ASM_REGISTER_STATE_CHECK( vpx_plane_add_noise_c(d, noise, clamp, clamp, width, height, width)); for (int i = 0; i < image_size; ++i) { EXPECT_EQ(static_cast<int>(s[i]), static_cast<int>(d[i])) << "i = " << i; } vpx_free(d); vpx_free(s); } INSTANTIATE_TEST_CASE_P(C, AddNoiseTest, ::testing::Values(vpx_plane_add_noise_c)); #if HAVE_SSE2 INSTANTIATE_TEST_CASE_P(SSE2, AddNoiseTest, ::testing::Values(vpx_plane_add_noise_sse2)); #endif #if HAVE_MSA INSTANTIATE_TEST_CASE_P(MSA, AddNoiseTest, ::testing::Values(vpx_plane_add_noise_msa)); #endif } // namespace