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/*
* Copyright (c) 2013 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_blockd.h"
#include "vp9/common/vp9_scan.h"
#include "vpx/vpx_integer.h"
using libvpx_test::ACMRandom;
namespace {
typedef void (*fwd_txfm_t)(const int16_t *in, int16_t *out, int stride);
typedef void (*inv_txfm_t)(const int16_t *in, uint8_t *out, int stride);
typedef std::tr1::tuple<inv_txfm_t,
inv_txfm_t,
TX_SIZE, int> partial_itxfm_param_t;
const int kMaxNumCoeffs = 1024;
class PartialIDctTest : public ::testing::TestWithParam<partial_itxfm_param_t> {
public:
virtual ~PartialIDctTest() {}
virtual void SetUp() {
full_itxfm_ = GET_PARAM(0);
partial_itxfm_ = GET_PARAM(1);
tx_size_ = GET_PARAM(2);
last_nonzero_ = GET_PARAM(3);
}
virtual void TearDown() { libvpx_test::ClearSystemState(); }
protected:
int last_nonzero_;
TX_SIZE tx_size_;
inv_txfm_t full_itxfm_;
inv_txfm_t partial_itxfm_;
};
TEST_P(PartialIDctTest, ResultsMatch) {
ACMRandom rnd(ACMRandom::DeterministicSeed());
int size;
switch (tx_size_) {
case TX_4X4:
size = 4;
break;
case TX_8X8:
size = 8;
break;
case TX_16X16:
size = 16;
break;
case TX_32X32:
size = 32;
break;
default:
FAIL() << "Wrong Size!";
break;
}
DECLARE_ALIGNED_ARRAY(16, int16_t, test_coef_block1, kMaxNumCoeffs);
DECLARE_ALIGNED_ARRAY(16, int16_t, test_coef_block2, kMaxNumCoeffs);
DECLARE_ALIGNED_ARRAY(16, uint8_t, dst1, kMaxNumCoeffs);
DECLARE_ALIGNED_ARRAY(16, uint8_t, dst2, kMaxNumCoeffs);
const int count_test_block = 1000;
const int max_coeff = 32766 / 4;
const int block_size = size * size;
int max_error = 0;
for (int i = 0; i < count_test_block; ++i) {
// clear out destination buffer
memset(dst1, 0, sizeof(*dst1) * block_size);
memset(dst2, 0, sizeof(*dst2) * block_size);
memset(test_coef_block1, 0, sizeof(*test_coef_block1) * block_size);
memset(test_coef_block2, 0, sizeof(*test_coef_block2) * block_size);
int max_energy_leftover = max_coeff * max_coeff;
for (int j = 0; j < last_nonzero_; ++j) {
int16_t coef = static_cast<int16_t>(sqrt(1.0 * max_energy_leftover) *
(rnd.Rand16() - 32768) / 65536);
max_energy_leftover -= coef * coef;
if (max_energy_leftover < 0) {
max_energy_leftover = 0;
coef = 0;
}
test_coef_block1[vp9_default_scan_orders[tx_size_].scan[j]] = coef;
}
memcpy(test_coef_block2, test_coef_block1,
sizeof(*test_coef_block2) * block_size);
REGISTER_STATE_CHECK(full_itxfm_(test_coef_block1, dst1, size));
REGISTER_STATE_CHECK(partial_itxfm_(test_coef_block2, dst2, size));
for (int j = 0; j < block_size; ++j) {
const int diff = dst1[j] - dst2[j];
const int error = diff * diff;
if (max_error < error)
max_error = error;
}
}
EXPECT_EQ(0, max_error)
<< "Error: partial inverse transform produces different results";
}
using std::tr1::make_tuple;
INSTANTIATE_TEST_CASE_P(
C, PartialIDctTest,
::testing::Values(
make_tuple(&vp9_idct32x32_1024_add_c,
&vp9_idct32x32_34_add_c,
TX_32X32, 34),
make_tuple(&vp9_idct32x32_1024_add_c,
&vp9_idct32x32_1_add_c,
TX_32X32, 1),
make_tuple(&vp9_idct16x16_256_add_c,
&vp9_idct16x16_10_add_c,
TX_16X16, 10),
make_tuple(&vp9_idct16x16_256_add_c,
&vp9_idct16x16_1_add_c,
TX_16X16, 1),
make_tuple(&vp9_idct8x8_64_add_c,
&vp9_idct8x8_10_add_c,
TX_8X8, 10),
make_tuple(&vp9_idct8x8_64_add_c,
&vp9_idct8x8_1_add_c,
TX_8X8, 1),
make_tuple(&vp9_idct4x4_16_add_c,
&vp9_idct4x4_1_add_c,
TX_4X4, 1)));
#if HAVE_NEON
INSTANTIATE_TEST_CASE_P(
NEON, PartialIDctTest,
::testing::Values(
make_tuple(&vp9_idct32x32_1024_add_c,
&vp9_idct32x32_1_add_neon,
TX_32X32, 1),
make_tuple(&vp9_idct16x16_256_add_c,
&vp9_idct16x16_10_add_neon,
TX_16X16, 10),
make_tuple(&vp9_idct16x16_256_add_c,
&vp9_idct16x16_1_add_neon,
TX_16X16, 1),
make_tuple(&vp9_idct8x8_64_add_c,
&vp9_idct8x8_10_add_neon,
TX_8X8, 10),
make_tuple(&vp9_idct8x8_64_add_c,
&vp9_idct8x8_1_add_neon,
TX_8X8, 1),
make_tuple(&vp9_idct4x4_16_add_c,
&vp9_idct4x4_1_add_neon,
TX_4X4, 1)));
#endif
#if HAVE_SSE2
INSTANTIATE_TEST_CASE_P(
SSE2, PartialIDctTest,
::testing::Values(
make_tuple(&vp9_idct32x32_1024_add_c,
&vp9_idct32x32_34_add_sse2,
TX_32X32, 34),
make_tuple(&vp9_idct32x32_1024_add_c,
&vp9_idct32x32_1_add_sse2,
TX_32X32, 1),
make_tuple(&vp9_idct16x16_256_add_c,
&vp9_idct16x16_10_add_sse2,
TX_16X16, 10),
make_tuple(&vp9_idct16x16_256_add_c,
&vp9_idct16x16_1_add_sse2,
TX_16X16, 1),
make_tuple(&vp9_idct8x8_64_add_c,
&vp9_idct8x8_10_add_sse2,
TX_8X8, 10),
make_tuple(&vp9_idct8x8_64_add_c,
&vp9_idct8x8_1_add_sse2,
TX_8X8, 1),
make_tuple(&vp9_idct4x4_16_add_c,
&vp9_idct4x4_1_add_sse2,
TX_4X4, 1)));
#endif
} // namespace
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