1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
|
// qtractorAudioFile.h
//
/****************************************************************************
Copyright (C) 2005-2020, rncbc aka Rui Nuno Capela. All rights reserved.
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*****************************************************************************/
#ifndef __qtractorAudioFile_h
#define __qtractorAudioFile_h
#include <QStringList>
#include <QHash>
//----------------------------------------------------------------------
// class qtractorAudioFile -- Abstract audio file mockup.
//
class qtractorAudioFile
{
public:
// Virtual destructor.
virtual ~qtractorAudioFile() {}
// Basic file open mode.
enum { None = 0, Read = 1, Write = 2 };
// Pure virtual method mockups.
virtual bool open (const QString& sFilename, int iMode = Read) = 0;
virtual int read (float **ppFrames, unsigned int iFrames) = 0;
virtual int write (float **ppFrames, unsigned int iFrames) = 0;
virtual bool seek (unsigned long iOffset) = 0;
virtual void close () = 0;
// Pure virtual accessor mockups.
virtual int mode() const = 0;
// These shall give us a clue on the size
// of the ring buffer size (in frames).
virtual unsigned short channels() const = 0;
virtual unsigned long frames() const = 0;
// Other special informational methods.
virtual unsigned int sampleRate() const = 0;
};
//----------------------------------------------------------------------
// class qtractorAudioFileFactory -- Audio file factory (singleton).
//
class qtractorAudioFileFactory
{
public:
// Constructor.
qtractorAudioFileFactory();
// Destructor.
~qtractorAudioFileFactory();
// Singleton instance accessor.
static qtractorAudioFileFactory *getInstance();
// Supported file types.
enum FileType { SndFile, VorbisFile, MadFile };
// Audio file format descriptor.
struct FileFormat
{
FileType type;
QString name;
QString ext;
int data;
};
// The supported file types/format global map.
typedef QList<FileFormat *> FileFormats;
static const FileFormats& formats();
// The supported file types/extension map.
typedef QHash<QString, FileFormat *> FileTypes;
static const FileTypes& types();
// The supported file types/names format lists.
static const QStringList& filters();
static const QStringList& exts();
// Default audio file format accessors
// (specific to capture/recording)
static void setDefaultType(
const QString& sExt, int iType,
int iFormat = 0, int iQuality = 4);
static QString defaultExt();
// Check whether given file type/format is valid. (static)
static bool isValidFormat(const FileFormat *pFormat, int iFormat);
// Factory method. (static)
static qtractorAudioFile *createAudioFile (const QString& sFilename,
unsigned short iChannels = 0, unsigned int iSampleRate = 0,
unsigned int iBufferSize = 0, int iFormat = -1);
protected:
// Instance factory method.
qtractorAudioFile *newAudioFile (const QString& sFilename,
unsigned short iChannels, unsigned int iSampleRate,
unsigned int iBufferSize, int iFormat);
static int defaultFormat();
static int defaultQuality();
private:
// Instance members.
FileFormats m_formats;
FileTypes m_types;
// Supported filter strings.
QStringList m_filters;
QStringList m_exts;
// Default file format/type (for capture/record)
FileFormat *m_pDefaultFormat;
int m_iDefaultFormat;
int m_iDefaultQuality;
// The singleton instance.
static qtractorAudioFileFactory *g_pInstance;
};
#endif // __qtractorAudioFile_h
// end of qtractorAudioFile.h
|