ozone: Add an opaque fb to ScanoutBuffer for primary planes.

ui/ozone/platform/drm/gpu/scanout_buffer.h

 // Copyright 2014 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 UI_OZONE_PLATFORM_DRM_GPU_SCANOUT_BUFFER_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_SCANOUT_BUFFER_H_
 
 #include <stdint.h>
 
 #include "base/memory/ref_counted.h"
 #include "ui/gfx/buffer_types.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace ui {
 
 class DrmDevice;
 
 // Abstraction for a DRM buffer that can be scanned-out of.
 class ScanoutBuffer : public base::RefCountedThreadSafe<ScanoutBuffer> {
  public:
   // ID allocated by the KMS API when the buffer is registered (via the handle).
   virtual uint32_t GetFramebufferId() const = 0;
 
+  // ID allocated if the buffer is also registered with a different pixel format
+  // so that it can be scheduled as an opaque buffer.
+  virtual uint32_t GetOpaqueFramebufferId() const = 0;
+
   // Returns FourCC format representing the way pixel data has been encoded in
   // memory for the registered framebuffer. This can be used to check if frame
   // buffer is compatible with a given hardware plane.
   virtual uint32_t GetFramebufferPixelFormat() const = 0;
 
+  // Returns FourCC format that should be used to schedule this buffer for
+  // scanout when used as an opaque buffer.
+  virtual uint32_t GetOpaqueFramebufferPixelFormat() const = 0;
+
   // Handle for the buffer. This is received when allocating the buffer.
   virtual uint32_t GetHandle() const = 0;
 
   // Size of the buffer.
   virtual gfx::Size GetSize() const = 0;
 
   // Device on which the buffer was created.
   virtual const DrmDevice* GetDrmDevice() const = 0;
 
   virtual bool RequiresGlFinish() const = 0;
@@ skipping 10 matching lines @@
 
   virtual scoped_refptr<ScanoutBuffer> Create(
       const scoped_refptr<DrmDevice>& drm,
       uint32_t format,
       const gfx::Size& size) = 0;
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_SCANOUT_BUFFER_H_