annotate data/fileio/OggVorbisFileReader.h @ 509:6066bde1c126

* Cut back on the locking and general workload in FFTDataServer::getMagnitudes(). This stuff is far too complicated!
author Chris Cannam
date Mon, 08 Dec 2008 11:15:13 +0000
parents 183ee2a55fc7
children 268c5431936d
rev   line source
Chris@148 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@148 2
Chris@148 3 /*
Chris@148 4 Sonic Visualiser
Chris@148 5 An audio file viewer and annotation editor.
Chris@148 6 Centre for Digital Music, Queen Mary, University of London.
Chris@148 7 This file copyright 2006 Chris Cannam.
Chris@148 8
Chris@148 9 This program is free software; you can redistribute it and/or
Chris@148 10 modify it under the terms of the GNU General Public License as
Chris@148 11 published by the Free Software Foundation; either version 2 of the
Chris@148 12 License, or (at your option) any later version. See the file
Chris@148 13 COPYING included with this distribution for more information.
Chris@148 14 */
Chris@148 15
Chris@148 16 #ifndef _OGG_VORBIS_FILE_READER_H_
Chris@148 17 #define _OGG_VORBIS_FILE_READER_H_
Chris@148 18
Chris@148 19 #ifdef HAVE_OGGZ
Chris@148 20 #ifdef HAVE_FISHSOUND
Chris@148 21
Chris@148 22 #include "CodedAudioFileReader.h"
Chris@148 23
Chris@263 24 #include "base/Thread.h"
Chris@148 25 #include <oggz/oggz.h>
Chris@148 26 #include <fishsound/fishsound.h>
Chris@148 27
Chris@157 28 #include <set>
Chris@157 29
Chris@392 30 class ProgressReporter;
Chris@148 31
Chris@148 32 class OggVorbisFileReader : public CodedAudioFileReader
Chris@148 33 {
Chris@392 34 Q_OBJECT
Chris@392 35
Chris@148 36 public:
Chris@263 37 enum DecodeMode {
Chris@392 38 DecodeAtOnce, // decode the file on construction, with progress
Chris@263 39 DecodeThreaded // decode in a background thread after construction
Chris@263 40 };
Chris@263 41
Chris@317 42 OggVorbisFileReader(FileSource source,
Chris@297 43 DecodeMode decodeMode,
Chris@297 44 CacheMode cacheMode,
Chris@392 45 size_t targetRate = 0,
Chris@392 46 ProgressReporter *reporter = 0);
Chris@148 47 virtual ~OggVorbisFileReader();
Chris@148 48
Chris@290 49 virtual QString getError() const { return m_error; }
Chris@290 50
Chris@345 51 virtual QString getLocation() const { return m_source.getLocation(); }
Chris@290 52 virtual QString getTitle() const { return m_title; }
Chris@333 53 virtual QString getMaker() const { return m_maker; }
Chris@271 54
Chris@290 55 static void getSupportedExtensions(std::set<QString> &extensions);
Chris@316 56 static bool supportsExtension(QString ext);
Chris@316 57 static bool supportsContentType(QString type);
Chris@317 58 static bool supports(FileSource &source);
Chris@157 59
Chris@265 60 virtual int getDecodeCompletion() const { return m_completion; }
Chris@265 61
Chris@263 62 virtual bool isUpdating() const {
Chris@263 63 return m_decodeThread && m_decodeThread->isRunning();
Chris@263 64 }
Chris@263 65
Chris@392 66 public slots:
Chris@392 67 void cancelled();
Chris@392 68
Chris@148 69 protected:
Chris@317 70 FileSource m_source;
Chris@290 71 QString m_path;
Chris@290 72 QString m_error;
Chris@290 73 QString m_title;
Chris@333 74 QString m_maker;
Chris@148 75
Chris@263 76 OGGZ *m_oggz;
Chris@148 77 FishSound *m_fishSound;
Chris@392 78 ProgressReporter *m_reporter;
Chris@148 79 size_t m_fileSize;
Chris@148 80 size_t m_bytesRead;
Chris@271 81 bool m_commentsRead;
Chris@148 82 bool m_cancelled;
Chris@265 83 int m_completion;
Chris@148 84
Chris@148 85 static int readPacket(OGGZ *, ogg_packet *, long, void *);
Chris@148 86 static int acceptFrames(FishSound *, float **, long, void *);
Chris@263 87
Chris@263 88 class DecodeThread : public Thread
Chris@263 89 {
Chris@263 90 public:
Chris@263 91 DecodeThread(OggVorbisFileReader *reader) : m_reader(reader) { }
Chris@263 92 virtual void run();
Chris@263 93
Chris@263 94 protected:
Chris@263 95 OggVorbisFileReader *m_reader;
Chris@263 96 };
Chris@263 97
Chris@263 98 DecodeThread *m_decodeThread;
Chris@148 99 };
Chris@148 100
Chris@148 101 #endif
Chris@148 102 #endif
Chris@148 103
Chris@148 104 #endif