041035b390
Integrate it in Blocker to demonstrate use. TEST=beamforming sounds good. R=aluebs@webrtc.org, mgraczyk@chromium.org, sahark@google.com Review URL: https://webrtc-codereview.appspot.com/36799004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@8157 4adac7df-926f-26a2-2b94-8c16560cd09d
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
/*
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* Copyright (c) 2015 The WebRTC 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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#include <stddef.h>
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#include <vector>
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struct RingBuffer;
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namespace webrtc {
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// A ring buffer tailored for float deinterleaved audio. Any operation that
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// cannot be performed as requested will cause a crash (e.g. insufficient data
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// in the buffer to fulfill a read request.)
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class AudioRingBuffer final {
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public:
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// Specify the number of channels and maximum number of frames the buffer will
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// contain.
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AudioRingBuffer(size_t channels, size_t max_frames);
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~AudioRingBuffer();
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// Copy |data| to the buffer and advance the write pointer. |channels| must
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// be the same as at creation time.
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void Write(const float* const* data, size_t channels, size_t frames);
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// Copy from the buffer to |data| and advance the read pointer. |channels|
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// must be the same as at creation time.
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void Read(float* const* data, size_t channels, size_t frames);
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size_t ReadFramesAvailable() const;
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size_t WriteFramesAvailable() const;
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// Positive values advance the read pointer and negative values withdraw
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// the read pointer (i.e. flush and stuff the buffer respectively.)
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void MoveReadPosition(int frames);
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private:
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// We don't use a ScopedVector because it doesn't support a specialized
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// deleter (like scoped_ptr for instance.)
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std::vector<RingBuffer*> buffers_;
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};
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} // namespace webrtc
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