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Diffstat (limited to 'media/libvpx/libvpx/test/consistency_test.cc')
| -rw-r--r-- | media/libvpx/libvpx/test/consistency_test.cc | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/test/consistency_test.cc b/media/libvpx/libvpx/test/consistency_test.cc new file mode 100644 index 0000000000..5e872e70a8 --- /dev/null +++ b/media/libvpx/libvpx/test/consistency_test.cc @@ -0,0 +1,215 @@ +/* + * 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 <tuple> + +#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 SetUpTestSuite() { + 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 TearDownTestSuite() { + vpx_free(source_data_[0]); + source_data_[0] = nullptr; + vpx_free(reference_data_[0]); + reference_data_[0] = nullptr; + vpx_free(source_data_[1]); + source_data_[1] = nullptr; + vpx_free(reference_data_[1]); + reference_data_[1] = nullptr; + + delete[] ssim_array_; + } + + void TearDown() override { libvpx_test::ClearSystemState(); } + + protected: + // Handle frames up to 640x480 + static const int kDataAlignment = 16; + static const int kDataBufferSize = 640 * 480; + + void SetUp() override { + 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::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] = { nullptr, nullptr }; +uint8_t *ConsistencyTestBase::reference_data_[2] = { nullptr, nullptr }; +Ssimv *ConsistencyTestBase::ssim_array_ = nullptr; + +#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::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_SUITE_P(C, ConsistencyVP9Test, + ::testing::ValuesIn(c_vp9_tests)); +#endif + +} // namespace |