Index: cc/resources/shared_bitmap.h |
diff --git a/cc/resources/shared_bitmap.h b/cc/resources/shared_bitmap.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..793ef7a4261b0aa5deb1a5de38d4e19771f2baaa |
--- /dev/null |
+++ b/cc/resources/shared_bitmap.h |
@@ -0,0 +1,47 @@ |
+// Copyright 2013 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CC_RESOURCES_SHARED_BITMAP_H_ |
+#define CC_RESOURCES_SHARED_BITMAP_H_ |
+ |
+#include "base/basictypes.h" |
+#include "gpu/command_buffer/common/mailbox.h" |
+#include "ui/gfx/geometry/size.h" |
+ |
+namespace cc { |
+typedef gpu::Mailbox SharedBitmapId; |
+ |
+class SharedBitmap { |
+ public: |
+ SharedBitmap(uint8* pixels, const SharedBitmapId& id); |
+ |
+ virtual ~SharedBitmap(); |
+ |
+ uint8* pixels() { return pixels_; } |
+ |
+ const SharedBitmapId& id() { return id_; } |
+ |
+ // Returns true if the size is valid and false otherwise. |
+ static bool SizeInBytes(const gfx::Size& size, size_t* size_in_bytes); |
+ // Dies with a CRASH() if the size can not be represented as a positive number |
+ // of bytes. |
+ static size_t CheckedSizeInBytes(const gfx::Size& size); |
+ // Returns the size in bytes but may overflow or return 0. Only do this for |
+ // sizes that have already been checked. |
+ static size_t UncheckedSizeInBytes(const gfx::Size& size); |
+ // Returns true if the size is valid and false otherwise. |
+ static bool VerifySizeInBytes(const gfx::Size& size); |
+ |
+ static SharedBitmapId GenerateId(); |
+ |
+ private: |
+ uint8* pixels_; |
+ SharedBitmapId id_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(SharedBitmap); |
+}; |
+ |
+} // namespace cc |
+ |
+#endif // CC_RESOURCES_SHARED_BITMAP_H_ |