cc/resources/shared_bitmap.h

   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_SHARED_BITMAP_H_
   6 #define CC_RESOURCES_SHARED_BITMAP_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback.h"
  10 #include "base/memory/shared_memory.h"
  11 #include "cc/base/cc_export.h"
  12 #include "gpu/command_buffer/common/mailbox.h"
  13
  14 namespace base { class SharedMemory; }
  15
  16 namespace cc {
  17 typedef gpu::Mailbox SharedBitmapId;
  18
  19 class CC_EXPORT SharedBitmap {
  20  public:
  21   SharedBitmap(base::SharedMemory* memory,
  22                const SharedBitmapId& id,
  23                const base::Callback<void(SharedBitmap*)>& free_callback);
  24
  25   ~SharedBitmap();
  26
  27   bool operator<(const SharedBitmap& right) const {
  28     if (memory_ < right.memory_)
  29       return true;
  30     if (memory_ > right.memory_)
  31       return false;
  32     return id_ < right.id_;
  33   }
  34
  35   uint8* pixels() { return static_cast<uint8*>(memory_->memory()); }
  36
  37   base::SharedMemory* memory() { return memory_; }
  38
  39   SharedBitmapId id() { return id_; }
  40
  41  private:
  42   base::SharedMemory* memory_;
  43   SharedBitmapId id_;
  44   base::Callback<void(SharedBitmap*)> free_callback_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(SharedBitmap);
  47 };
  48
  49 }  // namespace cc
  50
  51 #endif  // CC_RESOURCES_SHARED_BITMAP_H_