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/*
* Copyright (c) 2015 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 MODULES_AUDIO_CODING_CODECS_OPUS_TEST_AUDIO_RING_BUFFER_H_
#define MODULES_AUDIO_CODING_CODECS_OPUS_TEST_AUDIO_RING_BUFFER_H_
#include <stddef.h>
#include <memory>
#include <vector>
struct RingBuffer;
namespace webrtc {
// A ring buffer tailored for float deinterleaved audio. Any operation that
// cannot be performed as requested will cause a crash (e.g. insufficient data
// in the buffer to fulfill a read request.)
class AudioRingBuffer final {
public:
// Specify the number of channels and maximum number of frames the buffer will
// contain.
AudioRingBuffer(size_t channels, size_t max_frames);
~AudioRingBuffer();
// Copies `data` to the buffer and advances the write pointer. `channels` must
// be the same as at creation time.
void Write(const float* const* data, size_t channels, size_t frames);
// Copies from the buffer to `data` and advances the read pointer. `channels`
// must be the same as at creation time.
void Read(float* const* data, size_t channels, size_t frames);
size_t ReadFramesAvailable() const;
size_t WriteFramesAvailable() const;
// Moves the read position. The forward version advances the read pointer
// towards the write pointer and the backward verison withdraws the read
// pointer away from the write pointer (i.e. flushing and stuffing the buffer
// respectively.)
void MoveReadPositionForward(size_t frames);
void MoveReadPositionBackward(size_t frames);
private:
// TODO(kwiberg): Use std::vector<std::unique_ptr<RingBuffer>> instead.
std::vector<RingBuffer*> buffers_;
};
} // namespace webrtc
#endif // MODULES_AUDIO_CODING_CODECS_OPUS_TEST_AUDIO_RING_BUFFER_H_
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