50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
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/*
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* Copyright (c) 2014 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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#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_CHANNEL_BUFFER_H_
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#define WEBRTC_MODULES_AUDIO_PROCESSING_CHANNEL_BUFFER_H_
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#include "webrtc/common_audio/include/audio_util.h"
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#include "webrtc/modules/audio_processing/common.h"
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namespace webrtc {
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// One int16_t and one float ChannelBuffer that are kept in sync. The sync is
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// broken when someone requests write access to either ChannelBuffer, and
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// reestablished when someone requests the outdated ChannelBuffer. It is
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// therefore safe to use the return value of ibuf_const() and fbuf_const()
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// until the next call to ibuf() or fbuf(), and the return value of ibuf() and
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// fbuf() until the next call to any of the other functions.
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class IFChannelBuffer {
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public:
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IFChannelBuffer(int samples_per_channel, int num_channels);
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ChannelBuffer<int16_t>* ibuf();
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ChannelBuffer<float>* fbuf();
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const ChannelBuffer<int16_t>* ibuf_const() const;
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const ChannelBuffer<float>* fbuf_const() const;
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int num_channels() const { return ibuf_.num_channels(); }
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int samples_per_channel() const { return ibuf_.samples_per_channel(); }
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private:
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void RefreshF() const;
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void RefreshI() const;
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mutable bool ivalid_;
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mutable ChannelBuffer<int16_t> ibuf_;
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mutable bool fvalid_;
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mutable ChannelBuffer<float> fbuf_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_PROCESSING_CHANNEL_BUFFER_H_
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