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| 1 // Copyright 2015 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 COMPONENTS_EXO_BUFFER_H_ |
| 6 #define COMPONENTS_EXO_BUFFER_H_ |
| 7 |
| 8 #include "base/callback.h" |
| 9 #include "base/macros.h" |
| 10 #include "base/memory/scoped_ptr.h" |
| 11 #include "base/memory/weak_ptr.h" |
| 12 #include "gpu/command_buffer/common/mailbox.h" |
| 13 #include "gpu/command_buffer/common/sync_token.h" |
| 14 #include "ui/gfx/buffer_types.h" |
| 15 #include "ui/gfx/geometry/size.h" |
| 16 |
| 17 namespace base { |
| 18 namespace trace_event { |
| 19 class TracedValue; |
| 20 } |
| 21 } |
| 22 |
| 23 namespace cc { |
| 24 class SingleReleaseCallback; |
| 25 class TextureMailbox; |
| 26 } |
| 27 |
| 28 namespace gfx { |
| 29 class GpuMemoryBuffer; |
| 30 } |
| 31 |
| 32 namespace exo { |
| 33 |
| 34 // This class provides the content for a Surface. The mechanism by which a |
| 35 // client provides and updates the contents is the responsibility of the client |
| 36 // and not defined as part of this class. |
| 37 class Buffer : public base::SupportsWeakPtr<Buffer> { |
| 38 public: |
| 39 Buffer(scoped_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer, |
| 40 unsigned texture_target); |
| 41 ~Buffer(); |
| 42 |
| 43 // Set the callback to run when the buffer is no longer used by the |
| 44 // compositor. The client is free to re-use or destroy this buffer and |
| 45 // its backing storage after this has been called. |
| 46 void set_release_callback(const base::Closure& release_callback) { |
| 47 release_callback_ = release_callback; |
| 48 } |
| 49 |
| 50 // This function can be used to acquire a texture mailbox that is bound to |
| 51 // the buffer. Returns a release callback on success. The release callback |
| 52 // must be called before a new texture mailbox can be acquired. |
| 53 scoped_ptr<cc::SingleReleaseCallback> AcquireTextureMailbox( |
| 54 cc::TextureMailbox* mailbox); |
| 55 |
| 56 // Returns the size of the buffer. |
| 57 gfx::Size GetSize() const; |
| 58 |
| 59 // Returns a trace value representing the state of the buffer. |
| 60 scoped_refptr<base::trace_event::TracedValue> AsTracedValue() const; |
| 61 |
| 62 private: |
| 63 static void Release(base::WeakPtr<Buffer> buffer, |
| 64 unsigned texture_target, |
| 65 unsigned texture_id, |
| 66 unsigned image_id, |
| 67 const gpu::SyncToken& sync_token, |
| 68 bool is_lost); |
| 69 |
| 70 scoped_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer_; |
| 71 const unsigned texture_target_; |
| 72 unsigned texture_id_; |
| 73 unsigned image_id_; |
| 74 gpu::Mailbox mailbox_; |
| 75 base::Closure release_callback_; |
| 76 |
| 77 DISALLOW_COPY_AND_ASSIGN(Buffer); |
| 78 }; |
| 79 |
| 80 } // namespace exo |
| 81 |
| 82 #endif // COMPONENTS_EXO_BUFFER_H_ |
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