mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-01 05:55:18 +00:00
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2012 The WebRTC 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_RANDOM_VECTOR_H_
|
||
|
|
#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_RANDOM_VECTOR_H_
|
||
|
|
|
||
|
|
#include <string.h> // size_t
|
||
|
|
|
||
|
|
#include "webrtc/base/constructormagic.h"
|
||
|
|
#include "webrtc/typedefs.h"
|
||
|
|
|
||
|
|
namespace webrtc {
|
||
|
|
|
||
|
|
// This class generates pseudo-random samples.
|
||
|
|
class RandomVector {
|
||
|
|
public:
|
||
|
|
static const int kRandomTableSize = 256;
|
||
|
|
static const int16_t kRandomTable[kRandomTableSize];
|
||
|
|
|
||
|
|
RandomVector()
|
||
|
|
: seed_(777),
|
||
|
|
seed_increment_(1) {
|
||
|
|
}
|
||
|
|
|
||
|
|
void Reset();
|
||
|
|
|
||
|
|
void Generate(size_t length, int16_t* output);
|
||
|
|
|
||
|
|
void IncreaseSeedIncrement(int16_t increase_by);
|
||
|
|
|
||
|
|
// Accessors and mutators.
|
||
|
|
int16_t seed_increment() { return seed_increment_; }
|
||
|
|
void set_seed_increment(int16_t value) { seed_increment_ = value; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
uint32_t seed_;
|
||
|
|
int16_t seed_increment_;
|
||
|
|
|
||
|
|
DISALLOW_COPY_AND_ASSIGN(RandomVector);
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace webrtc
|
||
|
|
#endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_RANDOM_VECTOR_H_
|