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/*
* Copyright (c) 2021, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 3-Clause Clear License
* and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
* License was not distributed with this source code in the LICENSE file, you
* can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. If the
* Alliance for Open Media Patent License 1.0 was not distributed with this
* source code in the PATENTS file, you can obtain it at
* aomedia.org/license/patent-license/.
*/
#include "aom_ports/aom_timer.h"
#include "test/warp_filter_test_util.h"
using std::make_tuple;
using std::tuple;
namespace libaom_test {
int32_t random_warped_param(libaom_test::ACMRandom *rnd, int bits) {
// 1 in 8 chance of generating zero (arbitrarily chosen)
if (((rnd->Rand8()) & 7) == 0) return 0;
// Otherwise, enerate uniform values in the range
// [-(1 << bits), 1] U [1, 1<<bits]
int32_t v = 1 + (rnd->Rand16() & ((1 << bits) - 1));
if ((rnd->Rand8()) & 1) return -v;
return v;
}
void generate_warped_model(libaom_test::ACMRandom *rnd, int32_t *mat,
int16_t *alpha, int16_t *beta, int16_t *gamma,
int16_t *delta, const int is_alpha_zero,
const int is_beta_zero, const int is_gamma_zero,
const int is_delta_zero) {
while (1) {
int rnd8 = rnd->Rand8() & 3;
mat[0] = random_warped_param(rnd, WARPEDMODEL_PREC_BITS + 6);
mat[1] = random_warped_param(rnd, WARPEDMODEL_PREC_BITS + 6);
mat[2] = (random_warped_param(rnd, WARPEDMODEL_PREC_BITS - 3)) +
(1 << WARPEDMODEL_PREC_BITS);
mat[3] = random_warped_param(rnd, WARPEDMODEL_PREC_BITS - 3);
if (rnd8 <= 1) {
// AFFINE
mat[4] = random_warped_param(rnd, WARPEDMODEL_PREC_BITS - 3);
mat[5] = (random_warped_param(rnd, WARPEDMODEL_PREC_BITS - 3)) +
(1 << WARPEDMODEL_PREC_BITS);
} else if (rnd8 == 2) {
mat[4] = -mat[3];
mat[5] = mat[2];
} else {
mat[4] = random_warped_param(rnd, WARPEDMODEL_PREC_BITS - 3);
mat[5] = (random_warped_param(rnd, WARPEDMODEL_PREC_BITS - 3)) +
(1 << WARPEDMODEL_PREC_BITS);
if (is_alpha_zero == 1) mat[2] = 1 << WARPEDMODEL_PREC_BITS;
if (is_beta_zero == 1) mat[3] = 0;
if (is_gamma_zero == 1) mat[4] = 0;
if (is_delta_zero == 1)
mat[5] = static_cast<int32_t>(
((static_cast<int64_t>(mat[3]) * mat[4] + (mat[2] / 2)) / mat[2]) +
(1 << WARPEDMODEL_PREC_BITS));
}
// Calculate the derived parameters and check that they are suitable
// for the warp filter.
assert(mat[2] != 0);
*alpha = clamp(mat[2] - (1 << WARPEDMODEL_PREC_BITS), INT16_MIN, INT16_MAX);
*beta = clamp(mat[3], INT16_MIN, INT16_MAX);
*gamma = static_cast<int16_t>(clamp64(
(static_cast<int64_t>(mat[4]) * (1 << WARPEDMODEL_PREC_BITS)) / mat[2],
INT16_MIN, INT16_MAX));
*delta = static_cast<int16_t>(clamp64(
mat[5] -
((static_cast<int64_t>(mat[3]) * mat[4] + (mat[2] / 2)) / mat[2]) -
(1 << WARPEDMODEL_PREC_BITS),
INT16_MIN, INT16_MAX));
if ((4 * abs(*alpha) + 7 * abs(*beta) >= (1 << WARPEDMODEL_PREC_BITS)) ||
(4 * abs(*gamma) + 4 * abs(*delta) >= (1 << WARPEDMODEL_PREC_BITS)))
continue;
*alpha = ROUND_POWER_OF_TWO_SIGNED(*alpha, WARP_PARAM_REDUCE_BITS) *
(1 << WARP_PARAM_REDUCE_BITS);
*beta = ROUND_POWER_OF_TWO_SIGNED(*beta, WARP_PARAM_REDUCE_BITS) *
(1 << WARP_PARAM_REDUCE_BITS);
*gamma = ROUND_POWER_OF_TWO_SIGNED(*gamma, WARP_PARAM_REDUCE_BITS) *
(1 << WARP_PARAM_REDUCE_BITS);
*delta = ROUND_POWER_OF_TWO_SIGNED(*delta, WARP_PARAM_REDUCE_BITS) *
(1 << WARP_PARAM_REDUCE_BITS);
// We have a valid model, so finish
return;
}
}
namespace AV1HighbdWarpFilter {
::testing::internal::ParamGenerator<HighbdWarpTestParams> BuildParams(
highbd_warp_affine_func filter) {
const HighbdWarpTestParam params[] = {
make_tuple(4, 4, 100, 8, filter), make_tuple(8, 8, 100, 8, filter),
make_tuple(64, 64, 100, 8, filter), make_tuple(4, 16, 100, 8, filter),
make_tuple(32, 8, 100, 8, filter), make_tuple(4, 4, 100, 10, filter),
make_tuple(8, 8, 100, 10, filter), make_tuple(64, 64, 100, 10, filter),
make_tuple(4, 16, 100, 10, filter), make_tuple(32, 8, 100, 10, filter),
make_tuple(4, 4, 100, 12, filter), make_tuple(8, 8, 100, 12, filter),
make_tuple(64, 64, 100, 12, filter), make_tuple(4, 16, 100, 12, filter),
make_tuple(32, 8, 100, 12, filter),
};
return ::testing::Combine(::testing::ValuesIn(params),
::testing::Values(0, 1), ::testing::Values(0, 1),
::testing::Values(0, 1), ::testing::Values(0, 1));
}
AV1HighbdWarpFilterTest::~AV1HighbdWarpFilterTest() {}
void AV1HighbdWarpFilterTest::SetUp() {
rnd_.Reset(ACMRandom::DeterministicSeed());
}
void AV1HighbdWarpFilterTest::TearDown() { libaom_test::ClearSystemState(); }
void AV1HighbdWarpFilterTest::RunSpeedTest(highbd_warp_affine_func test_impl) {
const int w = 128, h = 128;
const int border = 16;
const int stride = w + 2 * border;
HighbdWarpTestParam param = GET_PARAM(0);
const int is_alpha_zero = GET_PARAM(1);
const int is_beta_zero = GET_PARAM(2);
const int is_gamma_zero = GET_PARAM(3);
const int is_delta_zero = GET_PARAM(4);
const int out_w = std::get<0>(param), out_h = std::get<1>(param);
const int bd = std::get<3>(param);
const int mask = (1 << bd) - 1;
int sub_x, sub_y;
// The warp functions always write rows with widths that are multiples of 8.
// So to avoid a buffer overflow, we may need to pad rows to a multiple of 8.
int output_n = ((out_w + 7) & ~7) * out_h;
uint16_t *input_ = new uint16_t[h * stride];
uint16_t *input = input_ + border;
uint16_t *output = new uint16_t[output_n];
int32_t mat[8];
int16_t alpha, beta, gamma, delta;
ConvolveParams conv_params = get_conv_params(0, 0, bd);
CONV_BUF_TYPE *dsta = new CONV_BUF_TYPE[output_n];
generate_warped_model(&rnd_, mat, &alpha, &beta, &gamma, &delta,
is_alpha_zero, is_beta_zero, is_gamma_zero,
is_delta_zero);
// Generate an input block and extend its borders horizontally
for (int r = 0; r < h; ++r)
for (int c = 0; c < w; ++c) input[r * stride + c] = rnd_.Rand16() & mask;
for (int r = 0; r < h; ++r) {
for (int c = 0; c < border; ++c) {
input[r * stride - border + c] = input[r * stride];
input[r * stride + w + c] = input[r * stride + (w - 1)];
}
}
sub_x = 0;
sub_y = 0;
int do_average = 0;
conv_params = get_conv_params_no_round(do_average, 0, dsta, out_w, 1, bd);
const int num_loops = 1000000000 / (out_w + out_h);
aom_usec_timer timer;
aom_usec_timer_start(&timer);
for (int i = 0; i < num_loops; ++i)
test_impl(mat, input, w, h, stride, output, 32, 32, out_w, out_h, out_w,
sub_x, sub_y, bd, &conv_params, alpha, beta, gamma, delta);
aom_usec_timer_mark(&timer);
const int elapsed_time = static_cast<int>(aom_usec_timer_elapsed(&timer));
printf("highbd warp %3dx%-3d: %7.2f ns\n", out_w, out_h,
1000.0 * elapsed_time / num_loops);
delete[] input_;
delete[] output;
delete[] dsta;
}
void AV1HighbdWarpFilterTest::RunCheckOutput(
highbd_warp_affine_func test_impl) {
const int w = 128, h = 128;
const int border = 16;
const int stride = w + 2 * border;
HighbdWarpTestParam param = GET_PARAM(0);
const int is_alpha_zero = GET_PARAM(1);
const int is_beta_zero = GET_PARAM(2);
const int is_gamma_zero = GET_PARAM(3);
const int is_delta_zero = GET_PARAM(4);
const int out_w = std::get<0>(param), out_h = std::get<1>(param);
const int bd = std::get<3>(param);
const int num_iters = std::get<2>(param);
const int mask = (1 << bd) - 1;
int i, j, sub_x, sub_y;
// The warp functions always write rows with widths that are multiples of 8.
// So to avoid a buffer overflow, we may need to pad rows to a multiple of 8.
int output_n = ((out_w + 7) & ~7) * out_h;
uint16_t *input_ = new uint16_t[h * stride];
uint16_t *input = input_ + border;
uint16_t *output = new uint16_t[output_n];
uint16_t *output2 = new uint16_t[output_n];
int32_t mat[8];
int16_t alpha, beta, gamma, delta;
ConvolveParams conv_params = get_conv_params(0, 0, bd);
CONV_BUF_TYPE *dsta = new CONV_BUF_TYPE[output_n];
CONV_BUF_TYPE *dstb = new CONV_BUF_TYPE[output_n];
for (int i = 0; i < output_n; ++i) output[i] = output2[i] = rnd_.Rand16();
for (i = 0; i < num_iters; ++i) {
// Generate an input block and extend its borders horizontally
for (int r = 0; r < h; ++r)
for (int c = 0; c < w; ++c) input[r * stride + c] = rnd_.Rand16() & mask;
for (int r = 0; r < h; ++r) {
for (int c = 0; c < border; ++c) {
input[r * stride - border + c] = input[r * stride];
input[r * stride + w + c] = input[r * stride + (w - 1)];
}
}
const int use_no_round = rnd_.Rand8() & 1;
for (sub_x = 0; sub_x < 2; ++sub_x)
for (sub_y = 0; sub_y < 2; ++sub_y) {
generate_warped_model(&rnd_, mat, &alpha, &beta, &gamma, &delta,
is_alpha_zero, is_beta_zero, is_gamma_zero,
is_delta_zero);
for (int ii = 0; ii < 2; ++ii) {
for (int jj = 0; jj < 5; ++jj) {
for (int do_average = 0; do_average <= 1; ++do_average) {
if (use_no_round) {
conv_params =
get_conv_params_no_round(do_average, 0, dsta, out_w, 1, bd);
} else {
conv_params = get_conv_params(0, 0, bd);
}
if (jj >= 4) {
} else {
conv_params.fwd_offset = quant_dist_lookup_table[jj][ii];
conv_params.bck_offset = quant_dist_lookup_table[jj][1 - ii];
}
av1_highbd_warp_affine_c(mat, input, w, h, stride, output, 32, 32,
out_w, out_h, out_w, sub_x, sub_y, bd,
&conv_params, alpha, beta, gamma, delta);
if (use_no_round) {
// TODO(angiebird): Change this to test_impl once we have SIMD
// implementation
conv_params =
get_conv_params_no_round(do_average, 0, dstb, out_w, 1, bd);
}
if (jj >= 4) {
} else {
conv_params.fwd_offset = quant_dist_lookup_table[jj][ii];
conv_params.bck_offset = quant_dist_lookup_table[jj][1 - ii];
}
test_impl(mat, input, w, h, stride, output2, 32, 32, out_w, out_h,
out_w, sub_x, sub_y, bd, &conv_params, alpha, beta,
gamma, delta);
if (use_no_round) {
for (j = 0; j < out_w * out_h; ++j)
ASSERT_EQ(dsta[j], dstb[j])
<< "Pixel mismatch at index " << j << " = ("
<< (j % out_w) << ", " << (j / out_w) << ") on iteration "
<< i;
for (j = 0; j < out_w * out_h; ++j)
ASSERT_EQ(output[j], output2[j])
<< "Pixel mismatch at index " << j << " = ("
<< (j % out_w) << ", " << (j / out_w) << ") on iteration "
<< i;
} else {
for (j = 0; j < out_w * out_h; ++j)
ASSERT_EQ(output[j], output2[j])
<< "Pixel mismatch at index " << j << " = ("
<< (j % out_w) << ", " << (j / out_w) << ") on iteration "
<< i;
}
}
}
}
}
}
delete[] input_;
delete[] output;
delete[] output2;
delete[] dsta;
delete[] dstb;
}
} // namespace AV1HighbdWarpFilter
} // namespace libaom_test