Mercurial > hg > svcore
view data/fileio/CodedAudioFileReader.h @ 933:d03b3d956358 warnfix_no_size_t
Merge from branch tony_integration
author | Chris Cannam |
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date | Wed, 18 Jun 2014 08:34:46 +0100 |
parents | 59e7fe1b1003 f3cda3280398 |
children | 36f79bc5c3d7 |
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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(int start, int count, SampleBlock &frames) const; virtual int getNativeRate() const { return m_fileRate; } /// Intermediate cache means all CodedAudioFileReaders are quickly seekable virtual bool isQuicklySeekable() const { return true; } signals: void progress(int); protected: CodedAudioFileReader(CacheMode cacheMode, int targetRate, bool normalised); void initialiseDecodeCache(); // samplerate, channels must have been set // may throw InsufficientDiscSpace: void addSamplesToDecodeCache(float **samples, int nframes); void addSamplesToDecodeCache(float *samplesInterleaved, int 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, int sz, bool final); void pushBufferResampling(float *interleaved, int sz, float ratio, bool final); void pushBufferNonResampling(float *interleaved, int sz); protected: QMutex m_cacheMutex; CacheMode m_cacheMode; SampleBlock m_data; mutable QReadWriteLock m_dataLock; bool m_initialised; Serialiser *m_serialiser; int m_fileRate; QString m_cacheFileName; SNDFILE *m_cacheFileWritePtr; WavFileReader *m_cacheFileReader; float *m_cacheWriteBuffer; int m_cacheWriteBufferIndex; int m_cacheWriteBufferSize; // frames Resampler *m_resampler; float *m_resampleBuffer; int m_fileFrameCount; bool m_normalised; float m_max; float m_gain; }; #endif