comparison data/fileio/WavFileReader.h @ 0:fc9323a41f5a

start base : Sonic Visualiser sv1-1.0rc1

+/* -*- 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(QString path, 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);
+
+    bool isUpdating() const { return m_updating; }
+
+    void updateFrameCount();
+    void updateDone();
+
+protected:
+    SF_INFO m_fileInfo;
+    SNDFILE *m_file;
+
+    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