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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. 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 www.aomedia.org/license/patent.
*/
#include "test/av1_txfm_test.h"
#include "av1/common/av1_fwd_txfm1d.h"
#include "av1/common/av1_inv_txfm1d.h"
using libaom_test::ACMRandom;
using libaom_test::input_base;
namespace {
const int txfm_type_num = 2;
const int txfm_size_ls[5] = { 4, 8, 16, 32, 64 };
const TxfmFunc fwd_txfm_func_ls[][2] = {
{ av1_fdct4_new, av1_fadst4_new },
{ av1_fdct8_new, av1_fadst8_new },
{ av1_fdct16_new, av1_fadst16_new },
{ av1_fdct32_new, av1_fadst32_new },
#if CONFIG_TX64X64
{ av1_fdct64_new, NULL },
#endif
};
const TxfmFunc inv_txfm_func_ls[][2] = {
{ av1_idct4_new, av1_iadst4_new },
{ av1_idct8_new, av1_iadst8_new },
{ av1_idct16_new, av1_iadst16_new },
{ av1_idct32_new, av1_iadst32_new },
#if CONFIG_TX64X64
{ av1_idct64_new, NULL },
#endif
};
// the maximum stage number of fwd/inv 1d dct/adst txfm is 12
const int8_t cos_bit[12] = { 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14 };
const int8_t range_bit[12] = { 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32 };
#define ARRAY_SIZE(x) (int)(sizeof(x) / sizeof(x[0]))
TEST(av1_inv_txfm1d, round_trip) {
ACMRandom rnd(ACMRandom::DeterministicSeed());
for (int si = 0; si < ARRAY_SIZE(fwd_txfm_func_ls); ++si) {
int txfm_size = txfm_size_ls[si];
for (int ti = 0; ti < txfm_type_num; ++ti) {
TxfmFunc fwd_txfm_func = fwd_txfm_func_ls[si][ti];
TxfmFunc inv_txfm_func = inv_txfm_func_ls[si][ti];
int max_error = 2;
if (!fwd_txfm_func) continue;
const int count_test_block = 5000;
for (int ci = 0; ci < count_test_block; ++ci) {
int32_t input[64];
int32_t output[64];
int32_t round_trip_output[64];
assert(txfm_size <= ARRAY_SIZE(input));
for (int ni = 0; ni < txfm_size; ++ni) {
input[ni] = rnd.Rand16() % input_base - rnd.Rand16() % input_base;
}
fwd_txfm_func(input, output, cos_bit, range_bit);
inv_txfm_func(output, round_trip_output, cos_bit, range_bit);
for (int ni = 0; ni < txfm_size; ++ni) {
int node_err =
abs(input[ni] - round_shift(round_trip_output[ni],
get_max_bit(txfm_size) - 1));
EXPECT_LE(node_err, max_error);
}
}
}
}
}
} // namespace
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