Index: components/exo/buffer.h |
diff --git a/components/exo/buffer.h b/components/exo/buffer.h |
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+// Copyright 2015 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 COMPONENTS_EXO_BUFFER_H_ |
+#define COMPONENTS_EXO_BUFFER_H_ |
+ |
+#include "base/callback.h" |
+#include "base/macros.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/memory/weak_ptr.h" |
+#include "gpu/command_buffer/common/mailbox.h" |
+#include "gpu/command_buffer/common/sync_token.h" |
+#include "ui/gfx/buffer_types.h" |
+#include "ui/gfx/geometry/size.h" |
+ |
+namespace base { |
+namespace trace_event { |
+class TracedValue; |
+} |
+} |
+ |
+namespace cc { |
+class SingleReleaseCallback; |
+class TextureMailbox; |
+} |
+ |
+namespace gfx { |
+class GpuMemoryBuffer; |
+} |
+ |
+namespace exo { |
+ |
+// This class provides the content for a Surface. The mechanism by which a |
+// client provides and updates the contents is the responsibility of the client |
+// and not defined as part of this class. |
+class Buffer : public base::SupportsWeakPtr<Buffer> { |
+ public: |
+ Buffer(scoped_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer, |
+ unsigned texture_target); |
+ ~Buffer(); |
+ |
+ // Set the callback to run when the buffer is no longer used by the |
+ // compositor. The client is free to re-use or destroy this buffer and |
+ // its backing storage after this has been called. |
+ void set_release_callback(const base::Closure& release_callback) { |
+ release_callback_ = release_callback; |
+ } |
+ |
+ // This function can be used to acquire a texture mailbox that is bound to |
+ // the buffer. Returns a release callback on success. The release callback |
+ // must be called before a new texture mailbox can be acquired. |
+ scoped_ptr<cc::SingleReleaseCallback> AcquireTextureMailbox( |
+ cc::TextureMailbox* mailbox); |
+ |
+ // Returns the size of the buffer. |
+ gfx::Size GetSize() const; |
+ |
+ // Returns a trace value representing the state of the buffer. |
+ scoped_refptr<base::trace_event::TracedValue> AsTracedValue() const; |
+ |
+ private: |
+ static void Release(base::WeakPtr<Buffer> buffer, |
+ unsigned texture_target, |
+ unsigned texture_id, |
+ unsigned image_id, |
+ const gpu::SyncToken& sync_token, |
+ bool is_lost); |
+ |
+ scoped_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer_; |
+ const unsigned texture_target_; |
+ unsigned texture_id_; |
+ unsigned image_id_; |
+ gpu::Mailbox mailbox_; |
+ base::Closure release_callback_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(Buffer); |
+}; |
+ |
+} // namespace exo |
+ |
+#endif // COMPONENTS_EXO_BUFFER_H_ |