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
|
/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <[email protected]>,
Chris Cannam <[email protected]>,
Richard Bown <[email protected]>
The moral right of the authors to claim authorship of this work
has been asserted.
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 _MP3AUDIOFILE_H_
#define _MP3AUDIOFILE_H_
#ifdef HAVE_LIBMAD
#include "AudioFile.h"
namespace Rosegarden
{
class MP3AudioFile : public AudioFile
{
public:
MP3AudioFile(const unsigned int &id,
const std::string &name,
const std::string &fileName);
MP3AudioFile(const std::string &fileName,
unsigned int channels,
unsigned int sampleRate,
unsigned int bytesPerSecond,
unsigned int bytesPerSample,
unsigned int bitsPerSample);
~MP3AudioFile();
// Override these methods for the WAV
//
virtual bool open();
virtual bool write();
virtual void close();
// Show the information we have on this file
//
virtual void printStats();
// Get all header information
//
void parseHeader();
// Offset to start of sample data
//
virtual std::streampos getDataOffset();
// Peak file name
//
virtual std::string getPeakFilename()
{ return (m_fileName + std::string(".pk")); }
// scan time was valid and successful.
//
virtual bool scanTo(const RealTime &time);
virtual bool scanTo(std::ifstream *file, const RealTime &time);
// Scan forward in a file by a certain amount of time
//
virtual bool scanForward(const RealTime &time);
virtual bool scanForward(std::ifstream *file, const RealTime &time);
// Return a number of samples - caller will have to
// de-interleave n-channel samples themselves.
//
virtual std::string getSampleFrames(std::ifstream *file,
unsigned int frames);
virtual unsigned int getSampleFrames(std::ifstream *file,
char *buf,
unsigned int frames);
virtual std::string getSampleFrames(unsigned int frames);
// Return a number of (possibly) interleaved samples
// over a time slice from current file pointer position.
//
virtual std::string getSampleFrameSlice(std::ifstream *file,
const RealTime &time);
virtual std::string getSampleFrameSlice(const RealTime &time);
// Append a string of samples to an already open (for writing)
// audio file.
//
virtual bool appendSamples(const std::string &buffer);
virtual bool appendSamples(const char *buffer, unsigned int samples);
// Get the length of the sample in Seconds/Microseconds
//
virtual RealTime getLength();
virtual unsigned int getBytesPerFrame() { return 0; }
//!!! NOT IMPLEMENTED YET
//
virtual bool decode(const unsigned char *sourceData,
size_t sourceBytes,
size_t targetSampleRate,
size_t targetChannels,
size_t targetFrames,
std::vector<float *> &targetData,
bool addToResultBuffers = false) { return false; }
};
}
#endif // HAVE_LIBMAD
#endif // _MP3AUDIOFILE_H_
|
