comparison data/fileio/MP3FileReader.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 _MP3_FILE_READER_H_
+#define _MP3_FILE_READER_H_
+
+#ifdef HAVE_MAD
+
+#include "CodedAudioFileReader.h"
+
+#include <mad.h>
+
+#include <set>
+
+class QProgressDialog;
+
+class MP3FileReader : public CodedAudioFileReader
+{
+public:
+    MP3FileReader(QString path, bool showProgress, CacheMode cacheMode);
+    virtual ~MP3FileReader();
+
+    virtual QString getError() const { return m_error; }
+
+    static void getSupportedExtensions(std::set<QString> &extensions);
+    
+protected:
+    QString m_path;
+    QString m_error;
+    size_t m_fileSize;
+    double m_bitrateNum;
+    size_t m_bitrateDenom;
+
+    QProgressDialog *m_progress;
+    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 *);
+};
+
+#endif
+
+#endif