54 lines
1.0 KiB
C++
54 lines
1.0 KiB
C++
/*
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* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef LIBVPX_TEST_ACM_RANDOM_H_
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#define LIBVPX_TEST_ACM_RANDOM_H_
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#include <stdlib.h>
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#include "vpx/vpx_integer.h"
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namespace libvpx_test {
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class ACMRandom {
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public:
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ACMRandom() {
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Reset(DeterministicSeed());
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}
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explicit ACMRandom(int seed) {
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Reset(seed);
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}
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void Reset(int seed) {
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srand(seed);
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}
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uint8_t Rand8(void) {
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return (rand() >> 8) & 0xff;
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}
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int PseudoUniform(int range) {
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return (rand() >> 8) % range;
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}
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int operator()(int n) {
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return PseudoUniform(n);
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}
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static int DeterministicSeed(void) {
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return 0xbaba;
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}
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};
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} // namespace libvpx_test
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#endif // LIBVPX_TEST_ACM_RANDOM_H_
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