Mercurial > hg > svcore
view data/fileio/CodedAudioFileReader.h @ 782:711a4652d616 qt5
Windows build fixes -- to review
author | Chris Cannam |
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date | Wed, 27 Mar 2013 17:21:58 +0000 |
parents | babed5be1ae7 |
children | f0558e69a074 |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef _CODED_AUDIO_FILE_READER_H_ #define _CODED_AUDIO_FILE_READER_H_ #include "AudioFileReader.h" #include <sndfile.h> #include <QMutex> #include <QReadWriteLock> class WavFileReader; class Serialiser; class Resampler; class CodedAudioFileReader : public AudioFileReader { Q_OBJECT public: virtual ~CodedAudioFileReader(); enum CacheMode { CacheInTemporaryFile, CacheInMemory }; virtual void getInterleavedFrames(size_t start, size_t count, SampleBlock &frames) const; virtual size_t getNativeRate() const { return m_fileRate; } signals: void progress(int); protected: CodedAudioFileReader(CacheMode cacheMode, size_t targetRate); void initialiseDecodeCache(); // samplerate, channels must have been set // may throw InsufficientDiscSpace: void addSamplesToDecodeCache(float **samples, size_t nframes); void addSamplesToDecodeCache(float *samplesInterleaved, size_t nframes); void addSamplesToDecodeCache(const SampleBlock &interleaved); // may throw InsufficientDiscSpace: void finishDecodeCache(); bool isDecodeCacheInitialised() const { return m_initialised; } void startSerialised(QString id); void endSerialised(); private: void pushBuffer(float *interleaved, size_t sz, bool final); void pushBufferResampling(float *interleaved, size_t sz, float ratio, bool final); void pushBufferNonResampling(float *interleaved, size_t sz); protected: QMutex m_cacheMutex; CacheMode m_cacheMode; SampleBlock m_data; mutable QReadWriteLock m_dataLock; bool m_initialised; Serialiser *m_serialiser; size_t m_fileRate; QString m_cacheFileName; SNDFILE *m_cacheFileWritePtr; WavFileReader *m_cacheFileReader; float *m_cacheWriteBuffer; size_t m_cacheWriteBufferIndex; size_t m_cacheWriteBufferSize; // frames Resampler *m_resampler; float *m_resampleBuffer; size_t m_fileFrameCount; }; #endif