1// Copyright 2013 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 CC_RESOURCES_TEXTURE_MAILBOX_H_
6#define CC_RESOURCES_TEXTURE_MAILBOX_H_
7
8#include <string>
9
10#include "base/callback.h"
11#include "base/memory/shared_memory.h"
12#include "cc/base/cc_export.h"
13#include "gpu/command_buffer/common/mailbox_holder.h"
14#include "ui/gfx/size.h"
15
16namespace cc {
17
18// TODO(skaslev, danakj) Rename this class more apropriately since now it
19// can hold a shared memory resource as well as a texture mailbox.
20class CC_EXPORT TextureMailbox {
21 public:
22  TextureMailbox();
23  explicit TextureMailbox(const gpu::MailboxHolder& mailbox_holder);
24  TextureMailbox(const gpu::Mailbox& mailbox, uint32 target, uint32 sync_point);
25  TextureMailbox(base::SharedMemory* shared_memory, const gfx::Size& size);
26
27  ~TextureMailbox();
28
29  bool IsValid() const { return IsTexture() || IsSharedMemory(); }
30  bool IsTexture() const { return !mailbox_holder_.mailbox.IsZero(); }
31  bool IsSharedMemory() const { return shared_memory_ != NULL; }
32
33  bool Equals(const TextureMailbox&) const;
34
35  const gpu::Mailbox& mailbox() const { return mailbox_holder_.mailbox; }
36  const int8* name() const { return mailbox().name; }
37  uint32 target() const { return mailbox_holder_.texture_target; }
38  uint32 sync_point() const { return mailbox_holder_.sync_point; }
39  void set_sync_point(int32 sync_point) {
40    mailbox_holder_.sync_point = sync_point;
41  }
42
43  bool allow_overlay() const { return allow_overlay_; }
44  void set_allow_overlay(bool allow_overlay) { allow_overlay_ = allow_overlay; }
45
46  base::SharedMemory* shared_memory() const { return shared_memory_; }
47  gfx::Size shared_memory_size() const { return shared_memory_size_; }
48  size_t SharedMemorySizeInBytes() const;
49
50 private:
51  gpu::MailboxHolder mailbox_holder_;
52  base::SharedMemory* shared_memory_;
53  gfx::Size shared_memory_size_;
54  bool allow_overlay_;
55};
56
57}  // namespace cc
58
59#endif  // CC_RESOURCES_TEXTURE_MAILBOX_H_
60