| /* |
| * 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); |
| virtual void releaseBuffer(Buffer *buffer); |
| |
| // ExtendedAudioBufferProvider interface |
| virtual size_t framesReady() const; |
| virtual int64_t framesReleased() const; |
| virtual void onTimestamp(const ExtendedTimestamp ×tamp); |
| |
| private: |
| const sp<NBAIO_Source> mSource; // the wrapped source |
| /*const*/ size_t mFrameSize; // 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 |
| int64_t mFramesReleased; // counter of the total number of frames released |
| }; |
| |
| } // namespace android |
| |
| #endif // ANDROID_SOURCE_AUDIO_BUFFER_PROVIDER_H |