Mercurial > hg > svcore
view data/fileio/MP3FileReader.h @ 431:9e1e12d1fbc3
* Load with RTLD_GLOBAL, otherwise Vampy plugins can't load their interpreters
author | Chris Cannam |
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date | Thu, 19 Jun 2008 15:11:28 +0000 |
parents | 183ee2a55fc7 |
children | a4b8ad0f1a8f |
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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 _MP3_FILE_READER_H_ #define _MP3_FILE_READER_H_ #ifdef HAVE_MAD #include "CodedAudioFileReader.h" #include "base/Thread.h" #include <mad.h> #include <set> class ProgressReporter; class MP3FileReader : public CodedAudioFileReader { Q_OBJECT public: enum DecodeMode { DecodeAtOnce, // decode the file on construction, with progress DecodeThreaded // decode in a background thread after construction }; MP3FileReader(FileSource source, DecodeMode decodeMode, CacheMode cacheMode, size_t targetRate = 0, ProgressReporter *reporter = 0); virtual ~MP3FileReader(); virtual QString getError() const { return m_error; } virtual QString getLocation() const { return m_source.getLocation(); } virtual QString getTitle() const { return m_title; } virtual QString getMaker() const { return m_maker; } 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(); } public slots: void cancelled(); protected: FileSource m_source; QString m_path; QString m_error; QString m_title; QString m_maker; size_t m_fileSize; double m_bitrateNum; size_t m_bitrateDenom; int m_completion; bool m_done; unsigned char *m_filebuffer; float **m_samplebuffer; size_t m_samplebuffersize; ProgressReporter *m_reporter; bool m_cancelled; struct DecoderData { unsigned char const *start; unsigned long length; MP3FileReader *reader; }; bool decode(void *mm, size_t sz); enum mad_flow accept(struct mad_header const *, struct mad_pcm *); static enum mad_flow input(void *, struct mad_stream *); static enum mad_flow output(void *, struct mad_header const *, struct mad_pcm *); static enum mad_flow error(void *, struct mad_stream *, struct mad_frame *); class DecodeThread : public Thread { public: DecodeThread(MP3FileReader *reader) : m_reader(reader) { } virtual void run(); protected: MP3FileReader *m_reader; }; DecodeThread *m_decodeThread; void loadTags(); QString loadTag(void *vtag, const char *name); }; #endif #endif