ref: 14bcbdac7610202a19eaf9d61b2dfb10f4096909
dir: /test/fdct8x8_test.cc/
/*
* 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 <math.h>
#include <stdlib.h>
#include <string.h>
#include "third_party/googletest/src/include/gtest/gtest.h"
#include "test/acm_random.h"
#include "test/clear_system_state.h"
#include "test/register_state_check.h"
#include "test/util.h"
#include "./vp9_rtcd.h"
#include "vp9/common/vp9_entropy.h"
#include "vpx/vpx_integer.h"
extern "C" {
void vp9_idct8x8_64_add_c(const int16_t *input, uint8_t *output, int pitch);
}
using libvpx_test::ACMRandom;
namespace {
typedef void (*FdctFunc)(const int16_t *in, int16_t *out, int stride);
typedef void (*IdctFunc)(const int16_t *in, uint8_t *out, int stride);
typedef void (*FhtFunc)(const int16_t *in, int16_t *out, int stride,
int tx_type);
typedef void (*IhtFunc)(const int16_t *in, uint8_t *out, int stride,
int tx_type);
typedef std::tr1::tuple<FdctFunc, IdctFunc, int> Dct8x8Param;
typedef std::tr1::tuple<FhtFunc, IhtFunc, int> Ht8x8Param;
void fdct8x8_ref(const int16_t *in, int16_t *out, int stride, int /*tx_type*/) {
vp9_fdct8x8_c(in, out, stride);
}
void fht8x8_ref(const int16_t *in, int16_t *out, int stride, int tx_type) {
vp9_fht8x8_c(in, out, stride, tx_type);
}
class FwdTrans8x8TestBase {
public:
virtual ~FwdTrans8x8TestBase() {}
protected:
virtual void RunFwdTxfm(int16_t *in, int16_t *out, int stride) = 0;
virtual void RunInvTxfm(int16_t *out, uint8_t *dst, int stride) = 0;
void RunSignBiasCheck() {
ACMRandom rnd(ACMRandom::DeterministicSeed());
DECLARE_ALIGNED_ARRAY(16, int16_t, test_input_block, 64);
DECLARE_ALIGNED_ARRAY(16, int16_t, test_output_block, 64);
int count_sign_block[64][2];
const int count_test_block = 100000;
memset(count_sign_block, 0, sizeof(count_sign_block));
for (int i = 0; i < count_test_block; ++i) {
// Initialize a test block with input range [-255, 255].
for (int j = 0; j < 64; ++j)
test_input_block[j] = rnd.Rand8() - rnd.Rand8();
ASM_REGISTER_STATE_CHECK(
RunFwdTxfm(test_input_block, test_output_block, pitch_));
for (int j = 0; j < 64; ++j) {
if (test_output_block[j] < 0)
++count_sign_block[j][0];
else if (test_output_block[j] > 0)
++count_sign_block[j][1];
}
}
for (int j = 0; j < 64; ++j) {
const int diff = abs(count_sign_block[j][0] - count_sign_block[j][1]);
const int max_diff = 1125;
EXPECT_LT(diff, max_diff)
<< "Error: 8x8 FDCT/FHT has a sign bias > "
<< 1. * max_diff / count_test_block * 100 << "%"
<< " for input range [-255, 255] at index " << j
<< " count0: " << count_sign_block[j][0]
<< " count1: " << count_sign_block[j][1]
<< " diff: " << diff;
}
memset(count_sign_block, 0, sizeof(count_sign_block));
for (int i = 0; i < count_test_block; ++i) {
// Initialize a test block with input range [-15, 15].
for (int j = 0; j < 64; ++j)
test_input_block[j] = (rnd.Rand8() >> 4) - (rnd.Rand8() >> 4);
ASM_REGISTER_STATE_CHECK(
RunFwdTxfm(test_input_block, test_output_block, pitch_));
for (int j = 0; j < 64; ++j) {
if (test_output_block[j] < 0)
++count_sign_block[j][0];
else if (test_output_block[j] > 0)
++count_sign_block[j][1];
}
}
for (int j = 0; j < 64; ++j) {
const int diff = abs(count_sign_block[j][0] - count_sign_block[j][1]);
const int max_diff = 10000;
EXPECT_LT(diff, max_diff)
<< "Error: 4x4 FDCT/FHT has a sign bias > "
<< 1. * max_diff / count_test_block * 100 << "%"
<< " for input range [-15, 15] at index " << j
<< " count0: " << count_sign_block[j][0]
<< " count1: " << count_sign_block[j][1]
<< " diff: " << diff;
}
}
void RunRoundTripErrorCheck() {
ACMRandom rnd(ACMRandom::DeterministicSeed());
int max_error = 0;
int total_error = 0;
const int count_test_block = 100000;
DECLARE_ALIGNED_ARRAY(16, int16_t, test_input_block, 64);
DECLARE_ALIGNED_ARRAY(16, int16_t, test_temp_block, 64);
DECLARE_ALIGNED_ARRAY(16, uint8_t, dst, 64);
DECLARE_ALIGNED_ARRAY(16, uint8_t, src, 64);
for (int i = 0; i < count_test_block; ++i) {
// Initialize a test block with input range [-255, 255].
for (int j = 0; j < 64; ++j) {
src[j] = rnd.Rand8();
dst[j] = rnd.Rand8();
test_input_block[j] = src[j] - dst[j];
}
ASM_REGISTER_STATE_CHECK(
RunFwdTxfm(test_input_block, test_temp_block, pitch_));
for (int j = 0; j < 64; ++j) {
if (test_temp_block[j] > 0) {
test_temp_block[j] += 2;
test_temp_block[j] /= 4;
test_temp_block[j] *= 4;
} else {
test_temp_block[j] -= 2;
test_temp_block[j] /= 4;
test_temp_block[j] *= 4;
}
}
ASM_REGISTER_STATE_CHECK(
RunInvTxfm(test_temp_block, dst, pitch_));
for (int j = 0; j < 64; ++j) {
const int diff = dst[j] - src[j];
const int error = diff * diff;
if (max_error < error)
max_error = error;
total_error += error;
}
}
EXPECT_GE(1, max_error)
<< "Error: 8x8 FDCT/IDCT or FHT/IHT has an individual"
<< " roundtrip error > 1";
EXPECT_GE(count_test_block/5, total_error)
<< "Error: 8x8 FDCT/IDCT or FHT/IHT has average roundtrip "
<< "error > 1/5 per block";
}
void RunExtremalCheck() {
ACMRandom rnd(ACMRandom::DeterministicSeed());
int max_error = 0;
int total_error = 0;
int total_coeff_error = 0;
const int count_test_block = 100000;
DECLARE_ALIGNED_ARRAY(16, int16_t, test_input_block, 64);
DECLARE_ALIGNED_ARRAY(16, int16_t, test_temp_block, 64);
DECLARE_ALIGNED_ARRAY(16, int16_t, ref_temp_block, 64);
DECLARE_ALIGNED_ARRAY(16, uint8_t, dst, 64);
DECLARE_ALIGNED_ARRAY(16, uint8_t, src, 64);
for (int i = 0; i < count_test_block; ++i) {
// Initialize a test block with input range [-255, 255].
for (int j = 0; j < 64; ++j) {
if (i == 0) {
src[j] = 255;
dst[j] = 0;
} else if (i == 1) {
src[j] = 0;
dst[j] = 255;
} else {
src[j] = rnd.Rand8() % 2 ? 255 : 0;
dst[j] = rnd.Rand8() % 2 ? 255 : 0;
}
test_input_block[j] = src[j] - dst[j];
}
ASM_REGISTER_STATE_CHECK(
RunFwdTxfm(test_input_block, test_temp_block, pitch_));
ASM_REGISTER_STATE_CHECK(
fwd_txfm_ref(test_input_block, ref_temp_block, pitch_, tx_type_));
ASM_REGISTER_STATE_CHECK(
RunInvTxfm(test_temp_block, dst, pitch_));
for (int j = 0; j < 64; ++j) {
const int diff = dst[j] - src[j];
const int error = diff * diff;
if (max_error < error)
max_error = error;
total_error += error;
const int coeff_diff = test_temp_block[j] - ref_temp_block[j];
total_coeff_error += abs(coeff_diff);
}
EXPECT_GE(1, max_error)
<< "Error: Extremal 8x8 FDCT/IDCT or FHT/IHT has"
<< "an individual roundtrip error > 1";
EXPECT_GE(count_test_block/5, total_error)
<< "Error: Extremal 8x8 FDCT/IDCT or FHT/IHT has average"
<< " roundtrip error > 1/5 per block";
EXPECT_EQ(0, total_coeff_error)
<< "Error: Extremal 8x8 FDCT/FHT has"
<< "overflow issues in the intermediate steps > 1";
}
}
int pitch_;
int tx_type_;
FhtFunc fwd_txfm_ref;
};
class FwdTrans8x8DCT
: public FwdTrans8x8TestBase,
public ::testing::TestWithParam<Dct8x8Param> {
public:
virtual ~FwdTrans8x8DCT() {}
virtual void SetUp() {
fwd_txfm_ = GET_PARAM(0);
inv_txfm_ = GET_PARAM(1);
tx_type_ = GET_PARAM(2);
pitch_ = 8;
fwd_txfm_ref = fdct8x8_ref;
}
virtual void TearDown() { libvpx_test::ClearSystemState(); }
protected:
void RunFwdTxfm(int16_t *in, int16_t *out, int stride) {
fwd_txfm_(in, out, stride);
}
void RunInvTxfm(int16_t *out, uint8_t *dst, int stride) {
inv_txfm_(out, dst, stride);
}
FdctFunc fwd_txfm_;
IdctFunc inv_txfm_;
};
TEST_P(FwdTrans8x8DCT, SignBiasCheck) {
RunSignBiasCheck();
}
TEST_P(FwdTrans8x8DCT, RoundTripErrorCheck) {
RunRoundTripErrorCheck();
}
TEST_P(FwdTrans8x8DCT, ExtremalCheck) {
RunExtremalCheck();
}
class FwdTrans8x8HT
: public FwdTrans8x8TestBase,
public ::testing::TestWithParam<Ht8x8Param> {
public:
virtual ~FwdTrans8x8HT() {}
virtual void SetUp() {
fwd_txfm_ = GET_PARAM(0);
inv_txfm_ = GET_PARAM(1);
tx_type_ = GET_PARAM(2);
pitch_ = 8;
fwd_txfm_ref = fht8x8_ref;
}
virtual void TearDown() { libvpx_test::ClearSystemState(); }
protected:
void RunFwdTxfm(int16_t *in, int16_t *out, int stride) {
fwd_txfm_(in, out, stride, tx_type_);
}
void RunInvTxfm(int16_t *out, uint8_t *dst, int stride) {
inv_txfm_(out, dst, stride, tx_type_);
}
FhtFunc fwd_txfm_;
IhtFunc inv_txfm_;
};
TEST_P(FwdTrans8x8HT, SignBiasCheck) {
RunSignBiasCheck();
}
TEST_P(FwdTrans8x8HT, RoundTripErrorCheck) {
RunRoundTripErrorCheck();
}
TEST_P(FwdTrans8x8HT, ExtremalCheck) {
RunExtremalCheck();
}
using std::tr1::make_tuple;
INSTANTIATE_TEST_CASE_P(
C, FwdTrans8x8DCT,
::testing::Values(
make_tuple(&vp9_fdct8x8_c, &vp9_idct8x8_64_add_c, 0)));
INSTANTIATE_TEST_CASE_P(
C, FwdTrans8x8HT,
::testing::Values(
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_c, 0),
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_c, 1),
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_c, 2),
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_c, 3)));
#if HAVE_NEON_ASM
INSTANTIATE_TEST_CASE_P(
NEON, FwdTrans8x8DCT,
::testing::Values(
make_tuple(&vp9_fdct8x8_neon, &vp9_idct8x8_64_add_neon, 0)));
INSTANTIATE_TEST_CASE_P(
DISABLED_NEON, FwdTrans8x8HT,
::testing::Values(
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_neon, 0),
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_neon, 1),
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_neon, 2),
make_tuple(&vp9_fht8x8_c, &vp9_iht8x8_64_add_neon, 3)));
#endif
#if HAVE_SSE2
INSTANTIATE_TEST_CASE_P(
SSE2, FwdTrans8x8DCT,
::testing::Values(
make_tuple(&vp9_fdct8x8_sse2, &vp9_idct8x8_64_add_sse2, 0)));
INSTANTIATE_TEST_CASE_P(
SSE2, FwdTrans8x8HT,
::testing::Values(
make_tuple(&vp9_fht8x8_sse2, &vp9_iht8x8_64_add_sse2, 0),
make_tuple(&vp9_fht8x8_sse2, &vp9_iht8x8_64_add_sse2, 1),
make_tuple(&vp9_fht8x8_sse2, &vp9_iht8x8_64_add_sse2, 2),
make_tuple(&vp9_fht8x8_sse2, &vp9_iht8x8_64_add_sse2, 3)));
#endif
#if HAVE_SSSE3 && ARCH_X86_64
INSTANTIATE_TEST_CASE_P(
SSSE3, FwdTrans8x8DCT,
::testing::Values(
make_tuple(&vp9_fdct8x8_ssse3, &vp9_idct8x8_64_add_ssse3, 0)));
#endif
} // namespace