60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/*
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* Copyright 2014, 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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#ifndef ANDROID_AUDIO_MAT_FRAME_SCANNER_H
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#define ANDROID_AUDIO_MAT_FRAME_SCANNER_H
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#include <stdint.h>
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#include "FrameScanner.h"
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namespace android {
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#define MAT_PCM_FRAMES 1536
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#define MAT_RATE_MULTIPLIER 10
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class MatFrameScanner : public FrameScanner
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{
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public:
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MatFrameScanner();
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virtual ~MatFrameScanner();
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virtual int getMaxChannels() const { return 5 + 1 + 2; } // 5.1.2 surround
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virtual int getMaxSampleFramesPerSyncFrame() const { return MAT_RATE_MULTIPLIER
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* MAT_PCM_FRAMES; }
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virtual int getSampleFramesPerSyncFrame() const { return MAT_RATE_MULTIPLIER
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* MAT_PCM_FRAMES; }
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virtual bool isFirstInBurst() { return false; }
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virtual bool isLastInBurst();
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virtual void resetBurst();
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virtual uint16_t convertBytesToLengthCode(uint16_t numBytes) const;
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virtual bool scan(uint8_t byte);
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protected:
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// used to recognize the start of a MAT sync frame
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static const uint8_t kSyncBytes[];
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int mChunkType;
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bool mLastChunk;
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virtual bool parseHeader();
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};
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} // namespace android
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#endif // ANDROID_AUDIO_MAT_FRAME_SCANNER_H
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