mirror of https://github.com/axmolengine/axmol.git
109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
/****************************************************************************
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Copyright (c) 2016 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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#include "audio/android/OpenSLHelper.h"
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#include "audio/android/PcmData.h"
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#include <mutex>
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#include <condition_variable>
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namespace cocos2d { namespace experimental {
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class AudioDecoder
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{
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public:
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AudioDecoder(SLEngineItf engineItf, const std::string &url, int bufferSizeInFrames, int sampleRate);
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virtual ~AudioDecoder();
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bool start(const FdGetterCallback &fdGetterCallback);
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inline PcmData getResult()
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{ return _result; };
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private:
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void resample();
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void signalEos();
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void decodeToPcmCallback(SLAndroidSimpleBufferQueueItf queueItf);
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void prefetchCallback(SLPrefetchStatusItf caller, SLuint32 event);
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void decodeProgressCallback(SLPlayItf caller, SLuint32 event);
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private:
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SLEngineItf _engineItf;
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std::string _url;
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PcmData _result;
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SLObjectItf _playObj;
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/* Local storage for decoded audio data */
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char* _pcmData;
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/* we only want to query / display the PCM format once */
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bool _formatQueried;
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/* Used to signal prefetching failures */
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bool _prefetchError;
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/* to display the number of decode iterations */
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int _counter;
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/* metadata key index for the PCM format information we want to retrieve */
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int _numChannelsKeyIndex;
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int _sampleRateKeyIndex;
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int _bitsPerSampleKeyIndex;
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int _containerSizeKeyIndex;
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int _channelMaskKeyIndex;
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int _endiannessKeyIndex;
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/* to signal to the test app the end of the stream to decode has been reached */
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bool _eos;
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std::mutex _eosLock;
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std::condition_variable _eosCondition;
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/* Structure for passing information to callback function */
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typedef struct CallbackCntxt_
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{
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SLPlayItf playItf;
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SLMetadataExtractionItf metaItf;
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SLuint32 size;
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SLint8 *pDataBase; // Base address of local audio data storage
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SLint8 *pData; // Current address of local audio data storage
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} CallbackCntxt;
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CallbackCntxt _decContext;
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int _bufferSizeInFrames;
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int _sampleRate;
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int _assetFd;
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friend class SLAudioDecoderCallbackProxy;
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void interleave();
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};
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}} // namespace cocos2d { namespace experimental {
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