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Diffstat (limited to 'include/media/nbaio/SourceAudioBufferProvider.h')
-rw-r--r-- | include/media/nbaio/SourceAudioBufferProvider.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/media/nbaio/SourceAudioBufferProvider.h b/include/media/nbaio/SourceAudioBufferProvider.h new file mode 100644 index 0000000..c08331b --- /dev/null +++ b/include/media/nbaio/SourceAudioBufferProvider.h @@ -0,0 +1,52 @@ +/* + * 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 |