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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Implementation of AudioBufferProvider that wraps an NBAIO_Source
#ifndef ANDROID_SOURCE_AUDIO_BUFFER_PROVIDER_H
#define ANDROID_SOURCE_AUDIO_BUFFER_PROVIDER_H
#include "NBAIO.h"
#include <media/ExtendedAudioBufferProvider.h>
namespace android {
class SourceAudioBufferProvider : public ExtendedAudioBufferProvider {
public:
SourceAudioBufferProvider(const sp<NBAIO_Source>& source);
virtual ~SourceAudioBufferProvider();
// AudioBufferProvider interface
virtual status_t getNextBuffer(Buffer *buffer, int64_t pts);
virtual void releaseBuffer(Buffer *buffer);
// ExtendedAudioBufferProvider interface
virtual size_t framesReady() const;
private:
const sp<NBAIO_Source> mSource; // the wrapped source
/*const*/ size_t mFrameBitShift; // log2(frame size in bytes)
void* mAllocated; // pointer to base of allocated memory
size_t mSize; // size of mAllocated in frames
size_t mOffset; // frame offset within mAllocated of valid data
size_t mRemaining; // frame count within mAllocated of valid data
size_t mGetCount; // buffer.frameCount of the most recent getNextBuffer
};
} // namespace android
#endif // ANDROID_SOURCE_AUDIO_BUFFER_PROVIDER_H
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