1 files changed, 50 insertions, 0 deletions
diff --git a/chromium/third_party/webrtc/modules/audio_coding/neteq/random_vector.h b/chromium/third_party/webrtc/modules/audio_coding/neteq/random_vector.h
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+++ b/chromium/third_party/webrtc/modules/audio_coding/neteq/random_vector.h
@@ -0,0 +1,50 @@
+/*
+ *  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_