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/*
* 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 <tuple>
#include "test/clear_system_state.h"
#include "test/register_state_check.h"
#include "test/util.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;
typedef void (*AddNoiseFunc)(uint8_t *start, const int8_t *noise,
int blackclamp, int whiteclamp, int width,
int height, int pitch);
typedef std::tuple<double, AddNoiseFunc> AddNoiseTestFPParam;
class AddNoiseTest : public ::testing::Test,
public ::testing::WithParamInterface<AddNoiseTestFPParam> {
public:
void TearDown() override { libvpx_test::ClearSystemState(); }
~AddNoiseTest() override = default;
};
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(GET_PARAM(0), noise, kNoiseSize);
uint8_t *const s =
reinterpret_cast<uint8_t *>(vpx_calloc(image_size, sizeof(*s)));
ASSERT_NE(s, nullptr);
memset(s, 99, image_size * sizeof(*s));
ASM_REGISTER_STATE_CHECK(
GET_PARAM(1)(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(
GET_PARAM(1)(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(
GET_PARAM(1)(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_NE(s, nullptr);
ASSERT_NE(d, nullptr);
memset(s, 99, image_size);
memset(d, 99, image_size);
srand(0);
ASM_REGISTER_STATE_CHECK(
GET_PARAM(1)(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);
}
using std::make_tuple;
INSTANTIATE_TEST_SUITE_P(
C, AddNoiseTest,
::testing::Values(make_tuple(3.25, vpx_plane_add_noise_c),
make_tuple(4.4, vpx_plane_add_noise_c)));
#if HAVE_SSE2
INSTANTIATE_TEST_SUITE_P(
SSE2, AddNoiseTest,
::testing::Values(make_tuple(3.25, vpx_plane_add_noise_sse2),
make_tuple(4.4, vpx_plane_add_noise_sse2)));
#endif
#if HAVE_MSA
INSTANTIATE_TEST_SUITE_P(
MSA, AddNoiseTest,
::testing::Values(make_tuple(3.25, vpx_plane_add_noise_msa),
make_tuple(4.4, vpx_plane_add_noise_msa)));
#endif
} // namespace
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