ref: d55682c2aadbca664727fde886d42d39f7cbb5cd
dir: libvpx/test/comp_avg_pred_test.cc
/*
* Copyright (c) 2017 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 "third_party/googletest/src/include/gtest/gtest.h"
#include "./vpx_dsp_rtcd.h"
#include "test/acm_random.h"
#include "test/buffer.h"
#include "test/register_state_check.h"
#include "vpx_ports/vpx_timer.h"
namespace {
using ::libvpx_test::ACMRandom;
using ::libvpx_test::Buffer;
typedef void (*AvgPredFunc)(uint8_t *a, const uint8_t *b, int w, int h,
const uint8_t *c, int c_stride);
uint8_t avg_with_rounding(uint8_t a, uint8_t b) { return (a + b + 1) >> 1; }
void reference_pred(const Buffer<uint8_t> &pred, const Buffer<uint8_t> &ref,
int width, int height, Buffer<uint8_t> *avg) {
ASSERT_NE(avg->TopLeftPixel(), nullptr);
ASSERT_NE(pred.TopLeftPixel(), nullptr);
ASSERT_NE(ref.TopLeftPixel(), nullptr);
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
avg->TopLeftPixel()[y * avg->stride() + x] =
avg_with_rounding(pred.TopLeftPixel()[y * pred.stride() + x],
ref.TopLeftPixel()[y * ref.stride() + x]);
}
}
}
class AvgPredTest : public ::testing::TestWithParam<AvgPredFunc> {
public:
virtual void SetUp() {
avg_pred_func_ = GetParam();
rnd_.Reset(ACMRandom::DeterministicSeed());
}
protected:
AvgPredFunc avg_pred_func_;
ACMRandom rnd_;
};
TEST_P(AvgPredTest, SizeCombinations) {
// This is called as part of the sub pixel variance. As such it must be one of
// the variance block sizes.
for (int width_pow = 2; width_pow <= 6; ++width_pow) {
for (int height_pow = width_pow - 1; height_pow <= width_pow + 1;
++height_pow) {
// Don't test 4x2 or 64x128
if (height_pow == 1 || height_pow == 7) continue;
// The sse2 special-cases when ref width == stride, so make sure to test
// it.
for (int ref_padding = 0; ref_padding < 2; ref_padding++) {
const int width = 1 << width_pow;
const int height = 1 << height_pow;
// Only the reference buffer may have a stride not equal to width.
Buffer<uint8_t> ref =
Buffer<uint8_t>(width, height, ref_padding ? 8 : 0);
ASSERT_TRUE(ref.Init());
Buffer<uint8_t> pred = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(pred.Init());
Buffer<uint8_t> avg_ref = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(avg_ref.Init());
Buffer<uint8_t> avg_chk = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(avg_chk.Init());
ref.Set(&rnd_, &ACMRandom::Rand8);
pred.Set(&rnd_, &ACMRandom::Rand8);
reference_pred(pred, ref, width, height, &avg_ref);
ASM_REGISTER_STATE_CHECK(
avg_pred_func_(avg_chk.TopLeftPixel(), pred.TopLeftPixel(), width,
height, ref.TopLeftPixel(), ref.stride()));
EXPECT_TRUE(avg_chk.CheckValues(avg_ref));
if (HasFailure()) {
printf("Width: %d Height: %d\n", width, height);
avg_chk.PrintDifference(avg_ref);
return;
}
}
}
}
}
TEST_P(AvgPredTest, CompareReferenceRandom) {
const int width = 64;
const int height = 32;
Buffer<uint8_t> ref = Buffer<uint8_t>(width, height, 8);
ASSERT_TRUE(ref.Init());
Buffer<uint8_t> pred = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(pred.Init());
Buffer<uint8_t> avg_ref = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(avg_ref.Init());
Buffer<uint8_t> avg_chk = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(avg_chk.Init());
for (int i = 0; i < 500; ++i) {
ref.Set(&rnd_, &ACMRandom::Rand8);
pred.Set(&rnd_, &ACMRandom::Rand8);
reference_pred(pred, ref, width, height, &avg_ref);
ASM_REGISTER_STATE_CHECK(avg_pred_func_(avg_chk.TopLeftPixel(),
pred.TopLeftPixel(), width, height,
ref.TopLeftPixel(), ref.stride()));
EXPECT_TRUE(avg_chk.CheckValues(avg_ref));
if (HasFailure()) {
printf("Width: %d Height: %d\n", width, height);
avg_chk.PrintDifference(avg_ref);
return;
}
}
}
TEST_P(AvgPredTest, DISABLED_Speed) {
for (int width_pow = 2; width_pow <= 6; ++width_pow) {
for (int height_pow = width_pow - 1; height_pow <= width_pow + 1;
++height_pow) {
// Don't test 4x2 or 64x128
if (height_pow == 1 || height_pow == 7) continue;
for (int ref_padding = 0; ref_padding < 2; ref_padding++) {
const int width = 1 << width_pow;
const int height = 1 << height_pow;
Buffer<uint8_t> ref =
Buffer<uint8_t>(width, height, ref_padding ? 8 : 0);
ASSERT_TRUE(ref.Init());
Buffer<uint8_t> pred = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(pred.Init());
Buffer<uint8_t> avg = Buffer<uint8_t>(width, height, 0, 16);
ASSERT_TRUE(avg.Init());
ref.Set(&rnd_, &ACMRandom::Rand8);
pred.Set(&rnd_, &ACMRandom::Rand8);
vpx_usec_timer timer;
vpx_usec_timer_start(&timer);
for (int i = 0; i < 10000000 / (width * height); ++i) {
avg_pred_func_(avg.TopLeftPixel(), pred.TopLeftPixel(), width, height,
ref.TopLeftPixel(), ref.stride());
}
vpx_usec_timer_mark(&timer);
const int elapsed_time =
static_cast<int>(vpx_usec_timer_elapsed(&timer));
printf("Average Test (ref_padding: %d) %dx%d time: %5d us\n",
ref_padding, width, height, elapsed_time);
}
}
}
}
INSTANTIATE_TEST_SUITE_P(C, AvgPredTest,
::testing::Values(&vpx_comp_avg_pred_c));
#if HAVE_SSE2
INSTANTIATE_TEST_SUITE_P(SSE2, AvgPredTest,
::testing::Values(&vpx_comp_avg_pred_sse2));
#endif // HAVE_SSE2
#if HAVE_NEON
INSTANTIATE_TEST_SUITE_P(NEON, AvgPredTest,
::testing::Values(&vpx_comp_avg_pred_neon));
#endif // HAVE_NEON
#if HAVE_VSX
INSTANTIATE_TEST_SUITE_P(VSX, AvgPredTest,
::testing::Values(&vpx_comp_avg_pred_vsx));
#endif // HAVE_VSX
} // namespace