Mercurial > hg > svcore
view data/fileio/ResamplingWavFileReader.h @ 377:166c22eff678
* Ensure waveforms are strictly correct even when using a non-power-of-two
non-power-of-sqrt-two block size with cacheing off and painting only small
areas at a time
author | Chris Cannam |
---|---|
date | Thu, 07 Feb 2008 15:25:05 +0000 |
parents | 700cd3350391 |
children | 183ee2a55fc7 |
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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 2007 QMUL. 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 _RESAMPLING_WAV_FILE_READER_H_ #define _RESAMPLING_WAV_FILE_READER_H_ #include "CodedAudioFileReader.h" #include "base/Thread.h" #include <set> class WavFileReader; class QProgressDialog; class ResamplingWavFileReader : public CodedAudioFileReader { public: enum ResampleMode { ResampleAtOnce, // resample the file on construction, with progress dialog ResampleThreaded // resample in a background thread after construction }; ResamplingWavFileReader(FileSource source, ResampleMode resampleMode, CacheMode cacheMode, size_t targetRate = 0); virtual ~ResamplingWavFileReader(); virtual QString getError() const { return m_error; } virtual QString getLocation() const { return m_source.getLocation(); } 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 m_completion; } virtual bool isUpdating() const { return m_decodeThread && m_decodeThread->isRunning(); } protected: FileSource m_source; QString m_path; QString m_error; bool m_cancelled; size_t m_processed; int m_completion; WavFileReader *m_original; QProgressDialog *m_progress; void addBlock(const SampleBlock &frames); class DecodeThread : public Thread { public: DecodeThread(ResamplingWavFileReader *reader) : m_reader(reader) { } virtual void run(); protected: ResamplingWavFileReader *m_reader; }; DecodeThread *m_decodeThread; }; #endif