225 строки
6.9 KiB
C++
225 строки
6.9 KiB
C++
/*
|
|
* Copyright (c) 2012 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 <limits.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "third_party/googletest/src/include/gtest/gtest.h"
|
|
|
|
#include "./vpx_config.h"
|
|
#if CONFIG_VP9_ENCODER
|
|
#include "./vp9_rtcd.h"
|
|
#endif
|
|
|
|
#include "test/acm_random.h"
|
|
#include "test/clear_system_state.h"
|
|
#include "test/register_state_check.h"
|
|
#include "test/util.h"
|
|
#include "vpx_dsp/ssim.h"
|
|
#include "vpx_mem/vpx_mem.h"
|
|
|
|
extern "C"
|
|
double vpx_get_ssim_metrics(uint8_t *img1, int img1_pitch,
|
|
uint8_t *img2, int img2_pitch,
|
|
int width, int height,
|
|
Ssimv *sv2, Metrics *m,
|
|
int do_inconsistency);
|
|
|
|
using libvpx_test::ACMRandom;
|
|
|
|
namespace {
|
|
class ConsistencyTestBase : public ::testing::Test {
|
|
public:
|
|
ConsistencyTestBase(int width, int height) : width_(width), height_(height) {}
|
|
|
|
static void SetUpTestCase() {
|
|
source_data_[0] = reinterpret_cast<uint8_t*>(
|
|
vpx_memalign(kDataAlignment, kDataBufferSize));
|
|
reference_data_[0] = reinterpret_cast<uint8_t*>(
|
|
vpx_memalign(kDataAlignment, kDataBufferSize));
|
|
source_data_[1] = reinterpret_cast<uint8_t*>(
|
|
vpx_memalign(kDataAlignment, kDataBufferSize));
|
|
reference_data_[1] = reinterpret_cast<uint8_t*>(
|
|
vpx_memalign(kDataAlignment, kDataBufferSize));
|
|
ssim_array_ = new Ssimv[kDataBufferSize / 16];
|
|
}
|
|
|
|
static void ClearSsim() {
|
|
memset(ssim_array_, 0, kDataBufferSize / 16);
|
|
}
|
|
static void TearDownTestCase() {
|
|
vpx_free(source_data_[0]);
|
|
source_data_[0] = NULL;
|
|
vpx_free(reference_data_[0]);
|
|
reference_data_[0] = NULL;
|
|
vpx_free(source_data_[1]);
|
|
source_data_[1] = NULL;
|
|
vpx_free(reference_data_[1]);
|
|
reference_data_[1] = NULL;
|
|
|
|
delete[] ssim_array_;
|
|
}
|
|
|
|
virtual void TearDown() {
|
|
libvpx_test::ClearSystemState();
|
|
}
|
|
|
|
protected:
|
|
// Handle frames up to 640x480
|
|
static const int kDataAlignment = 16;
|
|
static const int kDataBufferSize = 640*480;
|
|
|
|
virtual void SetUp() {
|
|
source_stride_ = (width_ + 31) & ~31;
|
|
reference_stride_ = width_ * 2;
|
|
rnd_.Reset(ACMRandom::DeterministicSeed());
|
|
}
|
|
|
|
void FillRandom(uint8_t *data, int stride, int width, int height) {
|
|
for (int h = 0; h < height; ++h) {
|
|
for (int w = 0; w < width; ++w) {
|
|
data[h * stride + w] = rnd_.Rand8();
|
|
}
|
|
}
|
|
}
|
|
|
|
void FillRandom(uint8_t *data, int stride) {
|
|
FillRandom(data, stride, width_, height_);
|
|
}
|
|
|
|
void Copy(uint8_t *reference, uint8_t *source) {
|
|
memcpy(reference, source, kDataBufferSize);
|
|
}
|
|
|
|
void Blur(uint8_t *data, int stride, int taps) {
|
|
int sum = 0;
|
|
int half_taps = taps / 2;
|
|
for (int h = 0; h < height_; ++h) {
|
|
for (int w = 0; w < taps; ++w) {
|
|
sum += data[w + h * stride];
|
|
}
|
|
for (int w = taps; w < width_; ++w) {
|
|
sum += data[w + h * stride] - data[w - taps + h * stride];
|
|
data[w - half_taps + h * stride] = (sum + half_taps) / taps;
|
|
}
|
|
}
|
|
for (int w = 0; w < width_; ++w) {
|
|
for (int h = 0; h < taps; ++h) {
|
|
sum += data[h + w * stride];
|
|
}
|
|
for (int h = taps; h < height_; ++h) {
|
|
sum += data[w + h * stride] - data[(h - taps) * stride + w];
|
|
data[(h - half_taps) * stride + w] = (sum + half_taps) / taps;
|
|
}
|
|
}
|
|
}
|
|
int width_, height_;
|
|
static uint8_t* source_data_[2];
|
|
int source_stride_;
|
|
static uint8_t* reference_data_[2];
|
|
int reference_stride_;
|
|
static Ssimv *ssim_array_;
|
|
Metrics metrics_;
|
|
|
|
ACMRandom rnd_;
|
|
};
|
|
|
|
#if CONFIG_VP9_ENCODER
|
|
typedef std::tr1::tuple<int, int> ConsistencyParam;
|
|
class ConsistencyVP9Test
|
|
: public ConsistencyTestBase,
|
|
public ::testing::WithParamInterface<ConsistencyParam> {
|
|
public:
|
|
ConsistencyVP9Test() : ConsistencyTestBase(GET_PARAM(0), GET_PARAM(1)) {}
|
|
|
|
protected:
|
|
double CheckConsistency(int frame) {
|
|
EXPECT_LT(frame, 2)<< "Frame to check has to be less than 2.";
|
|
return
|
|
vpx_get_ssim_metrics(source_data_[frame], source_stride_,
|
|
reference_data_[frame], reference_stride_,
|
|
width_, height_, ssim_array_, &metrics_, 1);
|
|
}
|
|
};
|
|
#endif // CONFIG_VP9_ENCODER
|
|
|
|
uint8_t* ConsistencyTestBase::source_data_[2] = {NULL, NULL};
|
|
uint8_t* ConsistencyTestBase::reference_data_[2] = {NULL, NULL};
|
|
Ssimv* ConsistencyTestBase::ssim_array_ = NULL;
|
|
|
|
#if CONFIG_VP9_ENCODER
|
|
TEST_P(ConsistencyVP9Test, ConsistencyIsZero) {
|
|
FillRandom(source_data_[0], source_stride_);
|
|
Copy(source_data_[1], source_data_[0]);
|
|
Copy(reference_data_[0], source_data_[0]);
|
|
Blur(reference_data_[0], reference_stride_, 3);
|
|
Copy(reference_data_[1], source_data_[0]);
|
|
Blur(reference_data_[1], reference_stride_, 3);
|
|
|
|
double inconsistency = CheckConsistency(1);
|
|
inconsistency = CheckConsistency(0);
|
|
EXPECT_EQ(inconsistency, 0.0)
|
|
<< "Should have 0 inconsistency if they are exactly the same.";
|
|
|
|
// If sources are not consistent reference frames inconsistency should
|
|
// be less than if the source is consistent.
|
|
FillRandom(source_data_[0], source_stride_);
|
|
FillRandom(source_data_[1], source_stride_);
|
|
FillRandom(reference_data_[0], reference_stride_);
|
|
FillRandom(reference_data_[1], reference_stride_);
|
|
CheckConsistency(0);
|
|
inconsistency = CheckConsistency(1);
|
|
|
|
Copy(source_data_[1], source_data_[0]);
|
|
CheckConsistency(0);
|
|
double inconsistency2 = CheckConsistency(1);
|
|
EXPECT_LT(inconsistency, inconsistency2)
|
|
<< "Should have less inconsistency if source itself is inconsistent.";
|
|
|
|
// Less of a blur should be less inconsistent than more blur coming off a
|
|
// a frame with no blur.
|
|
ClearSsim();
|
|
FillRandom(source_data_[0], source_stride_);
|
|
Copy(source_data_[1], source_data_[0]);
|
|
Copy(reference_data_[0], source_data_[0]);
|
|
Copy(reference_data_[1], source_data_[0]);
|
|
Blur(reference_data_[1], reference_stride_, 4);
|
|
CheckConsistency(0);
|
|
inconsistency = CheckConsistency(1);
|
|
ClearSsim();
|
|
Copy(reference_data_[1], source_data_[0]);
|
|
Blur(reference_data_[1], reference_stride_, 8);
|
|
CheckConsistency(0);
|
|
inconsistency2 = CheckConsistency(1);
|
|
|
|
EXPECT_LT(inconsistency, inconsistency2)
|
|
<< "Stronger Blur should produce more inconsistency.";
|
|
}
|
|
#endif // CONFIG_VP9_ENCODER
|
|
|
|
|
|
using std::tr1::make_tuple;
|
|
|
|
//------------------------------------------------------------------------------
|
|
// C functions
|
|
|
|
#if CONFIG_VP9_ENCODER
|
|
const ConsistencyParam c_vp9_tests[] = {
|
|
make_tuple(320, 240),
|
|
make_tuple(318, 242),
|
|
make_tuple(318, 238),
|
|
};
|
|
INSTANTIATE_TEST_CASE_P(C, ConsistencyVP9Test,
|
|
::testing::ValuesIn(c_vp9_tests));
|
|
#endif
|
|
|
|
} // namespace
|