aom/test/boolcoder_test.cc

91 строка
2.9 KiB
C++

/*
* 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 <math.h>
#include <stdlib.h>
#include <string.h>
#include "third_party/googletest/src/include/gtest/gtest.h"
#include "test/acm_random.h"
#include "aom/aom_integer.h"
#include "aom_dsp/bitreader.h"
#include "aom_dsp/bitwriter.h"
using libaom_test::ACMRandom;
namespace {
const int num_tests = 10;
} // namespace
TEST(AV1, TestBitIO) {
ACMRandom rnd(ACMRandom::DeterministicSeed());
for (int n = 0; n < num_tests; ++n) {
for (int method = 0; method <= 7; ++method) { // we generate various proba
const int kBitsToTest = 1000;
uint8_t probas[kBitsToTest];
for (int i = 0; i < kBitsToTest; ++i) {
const int parity = i & 1;
/* clang-format off */
probas[i] =
(method == 0) ? 0 : (method == 1) ? 255 :
(method == 2) ? 128 :
(method == 3) ? rnd.Rand8() :
(method == 4) ? (parity ? 0 : 255) :
// alternate between low and high proba:
(method == 5) ? (parity ? rnd(128) : 255 - rnd(128)) :
(method == 6) ?
(parity ? rnd(64) : 255 - rnd(64)) :
(parity ? rnd(32) : 255 - rnd(32));
/* clang-format on */
}
for (int bit_method = 0; bit_method <= 3; ++bit_method) {
const int random_seed = 6432;
const int kBufferSize = 10000;
ACMRandom bit_rnd(random_seed);
aom_writer bw;
uint8_t bw_buffer[kBufferSize];
aom_start_encode(&bw, bw_buffer);
int bit = (bit_method == 0) ? 0 : (bit_method == 1) ? 1 : 0;
for (int i = 0; i < kBitsToTest; ++i) {
if (bit_method == 2) {
bit = (i & 1);
} else if (bit_method == 3) {
bit = bit_rnd(2);
}
aom_write(&bw, bit, static_cast<int>(probas[i]));
}
aom_stop_encode(&bw);
// First bit should be zero
GTEST_ASSERT_EQ(bw_buffer[0] & 0x80, 0);
aom_reader br;
aom_reader_init(&br, bw_buffer, kBufferSize, NULL, NULL);
bit_rnd.Reset(random_seed);
for (int i = 0; i < kBitsToTest; ++i) {
if (bit_method == 2) {
bit = (i & 1);
} else if (bit_method == 3) {
bit = bit_rnd(2);
}
GTEST_ASSERT_EQ(aom_read(&br, probas[i]), bit)
<< "pos: " << i << " / " << kBitsToTest
<< " bit_method: " << bit_method << " method: " << method;
}
}
}
}
}