1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef PPAPI_CPP_DEV_BUFFER_DEV_H_
6#define PPAPI_CPP_DEV_BUFFER_DEV_H_
7
8#include "ppapi/cpp/resource.h"
9
10namespace pp {
11
12class InstanceHandle;
13
14class Buffer_Dev : public Resource {
15 public:
16  // Creates an is_null() Buffer object.
17  Buffer_Dev();
18  Buffer_Dev(const Buffer_Dev& other);
19  explicit Buffer_Dev(PP_Resource resource);
20
21  // Creates & Maps a new Buffer in the browser with the given size. The
22  // resulting object will be is_null() if either Create() or Map() fails.
23  Buffer_Dev(const InstanceHandle& instance, uint32_t size);
24
25  // Constructor used when the buffer resource already has a reference count
26  // assigned. No additional reference is taken.
27  Buffer_Dev(PassRef, PP_Resource resource);
28
29  // Unmap the underlying shared memory.
30  virtual ~Buffer_Dev();
31
32  Buffer_Dev& operator=(const Buffer_Dev& rhs);
33
34  uint32_t size() const { return size_; }
35  void* data() const { return data_; }
36
37 private:
38  void Init();
39
40  void* data_;
41  uint32_t size_;
42};
43
44}  // namespace pp
45
46#endif  // PPAPI_CPP_DEV_BUFFER_DEV_H_
47