OpenShot Audio Library | OpenShotAudio  0.3.0
juce_MemoryMappedFile.h
1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2017 - ROLI Ltd.
6 
7  JUCE is an open source library subject to commercial or open-source
8  licensing.
9 
10  The code included in this file is provided under the terms of the ISC license
11  http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12  To use, copy, modify, and/or distribute this software for any purpose with or
13  without fee is hereby granted provided that the above copyright notice and
14  this permission notice appear in all copies.
15 
16  JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17  EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18  DISCLAIMED.
19 
20  ==============================================================================
21 */
22 
23 namespace juce
24 {
25 
26 //==============================================================================
32 class JUCE_API MemoryMappedFile
33 {
34 public:
37  {
39  readWrite
41  };
42 
60  MemoryMappedFile (const File& file, AccessMode mode, bool exclusive = false);
61 
78  MemoryMappedFile (const File& file,
79  const Range<int64>& fileRange,
80  AccessMode mode,
81  bool exclusive = false);
82 
85 
89  void* getData() const noexcept { return address; }
90 
94  size_t getSize() const noexcept { return (size_t) range.getLength(); }
95 
97  Range<int64> getRange() const noexcept { return range; }
98 
99 private:
100  //==============================================================================
101  void* address = nullptr;
102  Range<int64> range;
103 
104  #if JUCE_WINDOWS
105  void* fileHandle = nullptr;
106  #else
107  int fileHandle = 0;
108  #endif
109 
110  void openInternal (const File&, AccessMode, bool);
111 
112  JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MemoryMappedFile)
113 };
114 
115 } // namespace juce
void * getData() const noexcept
size_t getSize() const noexcept
Range< int64 > getRange() const noexcept