Audaspace  1.3.0
A high level audio library.
SndFileReader.h
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16 
17 #pragma once
18 
19 #include "IReader.h"
20 
21 #ifdef LIBSNDFILE_PLUGIN
22 #define AUD_BUILD_PLUGIN
23 #endif
24 
31 #include <string>
32 #include <sndfile.h>
33 #include <memory>
34 
36 
37 class Buffer;
38 
43 {
44 private:
48  int m_position;
49 
53  int m_length;
54 
58  bool m_seekable;
59 
63  Specs m_specs;
64 
68  SNDFILE* m_sndfile;
69 
73  SF_VIRTUAL_IO m_vio;
74 
78  std::shared_ptr<Buffer> m_membuffer;
79 
83  int m_memoffset;
84 
85  // Functions for libsndfile virtual IO functionality
86  AUD_LOCAL static sf_count_t vio_get_filelen(void* user_data);
87  AUD_LOCAL static sf_count_t vio_seek(sf_count_t offset, int whence, void* user_data);
88  AUD_LOCAL static sf_count_t vio_read(void* ptr, sf_count_t count, void* user_data);
89  AUD_LOCAL static sf_count_t vio_tell(void* user_data);
90 
91  // delete copy constructor and operator=
92  SndFileReader(const SndFileReader&) = delete;
93  SndFileReader& operator=(const SndFileReader&) = delete;
94 
95 public:
102  SndFileReader(std::string filename);
103 
110  SndFileReader(std::shared_ptr<Buffer> buffer);
111 
115  virtual ~SndFileReader();
116 
117  virtual bool isSeekable() const;
118  virtual void seek(int position);
119  virtual int getLength() const;
120  virtual int getPosition() const;
121  virtual Specs getSpecs() const;
122  virtual void read(int& length, bool& eos, sample_t* buffer);
123 };
124 
#define AUD_NAMESPACE_END
Closes the audaspace namespace aud.
Definition: Audaspace.h:119
float sample_t
Sample type.(float samples)
Definition: Audaspace.h:126
#define AUD_LOCAL
Used for hiding symbols from export in the shared library.
Definition: Audaspace.h:80
#define AUD_NAMESPACE_BEGIN
Opens the audaspace namespace aud.
Definition: Audaspace.h:116
#define AUD_PLUGIN_API
Used for exporting symbols in the shared library.
Definition: Audaspace.h:94
The IReader interface.
This class is a simple buffer in RAM which is 32 Byte aligned and provides resize functionality.
Definition: Buffer.h:34
This class represents a sound source as stream or as buffer which can be read for example by another ...
Definition: IReader.h:35
This class reads a sound file via libsndfile.
Definition: SndFileReader.h:43
virtual int getLength() const
Returns an approximated length of the source in samples.
virtual ~SndFileReader()
Destroys the reader and closes the file.
SndFileReader(std::string filename)
Creates a new reader.
virtual void read(int &length, bool &eos, sample_t *buffer)
Request to read the next length samples out of the source.
virtual int getPosition() const
Returns the position of the source as a sample count value.
virtual Specs getSpecs() const
Returns the specification of the reader.
SndFileReader(std::shared_ptr< Buffer > buffer)
Creates a new reader.
virtual bool isSeekable() const
Tells whether the source provides seeking functionality or not.
virtual void seek(int position)
Seeks to a specific position in the source.
Specification of a sound source.
Definition: Specification.h:110