91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
extern "C" {
|
|
#include "vp8/encoder/boolhuff.h"
|
|
#include "vp8/decoder/dboolhuff.h"
|
|
}
|
|
|
|
#include <math.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "test/acm_random.h"
|
|
#include "third_party/googletest/src/include/gtest/gtest.h"
|
|
#include "vpx/vpx_integer.h"
|
|
|
|
namespace {
|
|
const int num_tests = 10;
|
|
} // namespace
|
|
|
|
using libvpx_test::ACMRandom;
|
|
|
|
TEST(VP8, 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 bits_to_test = 1000;
|
|
uint8_t probas[bits_to_test];
|
|
|
|
for (int i = 0; i < bits_to_test; ++i) {
|
|
const int parity = i & 1;
|
|
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));
|
|
}
|
|
for (int bit_method = 0; bit_method <= 3; ++bit_method) {
|
|
const int random_seed = 6432;
|
|
const int buffer_size = 10000;
|
|
ACMRandom bit_rnd(random_seed);
|
|
BOOL_CODER bw;
|
|
uint8_t bw_buffer[buffer_size];
|
|
vp8_start_encode(&bw, bw_buffer, bw_buffer + buffer_size);
|
|
|
|
int bit = (bit_method == 0) ? 0 : (bit_method == 1) ? 1 : 0;
|
|
for (int i = 0; i < bits_to_test; ++i) {
|
|
if (bit_method == 2) {
|
|
bit = (i & 1);
|
|
} else if (bit_method == 3) {
|
|
bit = bit_rnd(2);
|
|
}
|
|
vp8_encode_bool(&bw, bit, static_cast<int>(probas[i]));
|
|
}
|
|
|
|
vp8_stop_encode(&bw);
|
|
|
|
BOOL_DECODER br;
|
|
vp8dx_start_decode(&br, bw_buffer, buffer_size);
|
|
bit_rnd.Reset(random_seed);
|
|
for (int i = 0; i < bits_to_test; ++i) {
|
|
if (bit_method == 2) {
|
|
bit = (i & 1);
|
|
} else if (bit_method == 3) {
|
|
bit = bit_rnd(2);
|
|
}
|
|
GTEST_ASSERT_EQ(vp8dx_decode_bool(&br, probas[i]), bit)
|
|
<< "pos: "<< i << " / " << bits_to_test
|
|
<< " bit_method: " << bit_method
|
|
<< " method: " << method;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|