Mercurial > hg > svcore
view data/fileio/WavFileReader.h @ 335:02d2ad95ea52 spectrogram-cache-rejig
* Get storage advice for each cache in an FFT data server. Allows us to be
more confident about the actual memory situation and cut over from memory
to disc part way through an FFT calculation if necessary. StorageAdviser
is now a bit too optimistic though (it's too keen to allocate large numbers
of small blocks in memory).
author | Chris Cannam |
---|---|
date | Tue, 13 Nov 2007 13:54:10 +0000 |
parents | c324d410b096 |
children | 700cd3350391 |
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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 _WAV_FILE_READER_H_ #define _WAV_FILE_READER_H_ #include "AudioFileReader.h" #include <sndfile.h> #include <QMutex> #include <set> class WavFileReader : public AudioFileReader { public: WavFileReader(FileSource source, bool fileUpdating = false); virtual ~WavFileReader(); virtual QString getError() const { return m_error; } /** * Must be safe to call from multiple threads with different * arguments on the same object at the same time. */ virtual void getInterleavedFrames(size_t start, size_t count, SampleBlock &frames) const; static void getSupportedExtensions(std::set<QString> &extensions); static bool supportsExtension(QString ext); static bool supportsContentType(QString type); static bool supports(FileSource &source); virtual int getDecodeCompletion() const { return 100; } bool isUpdating() const { return m_updating; } void updateFrameCount(); void updateDone(); protected: SF_INFO m_fileInfo; SNDFILE *m_file; FileSource m_source; QString m_path; QString m_error; mutable QMutex m_mutex; mutable float *m_buffer; mutable size_t m_bufsiz; mutable size_t m_lastStart; mutable size_t m_lastCount; bool m_updating; }; #endif