55 lines
2.1 KiB
C++
55 lines
2.1 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Implementation of AudioBufferProvider that wraps an NBAIO_Source
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#ifndef ANDROID_SOURCE_AUDIO_BUFFER_PROVIDER_H
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#define ANDROID_SOURCE_AUDIO_BUFFER_PROVIDER_H
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#include "NBAIO.h"
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#include <media/ExtendedAudioBufferProvider.h>
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namespace android {
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class SourceAudioBufferProvider : public ExtendedAudioBufferProvider {
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public:
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SourceAudioBufferProvider(const sp<NBAIO_Source>& source);
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virtual ~SourceAudioBufferProvider();
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// AudioBufferProvider interface
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virtual status_t getNextBuffer(Buffer *buffer);
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virtual void releaseBuffer(Buffer *buffer);
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// ExtendedAudioBufferProvider interface
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virtual size_t framesReady() const;
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virtual int64_t framesReleased() const;
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virtual void onTimestamp(const ExtendedTimestamp ×tamp);
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private:
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const sp<NBAIO_Source> mSource; // the wrapped source
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/*const*/ size_t mFrameSize; // frame size in bytes
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void* mAllocated; // pointer to base of allocated memory
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size_t mSize; // size of mAllocated in frames
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size_t mOffset; // frame offset within mAllocated of valid data
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size_t mRemaining; // frame count within mAllocated of valid data
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size_t mGetCount; // buffer.frameCount of the most recent getNextBuffer
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int64_t mFramesReleased; // counter of the total number of frames released
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};
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} // namespace android
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#endif // ANDROID_SOURCE_AUDIO_BUFFER_PROVIDER_H
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