1 // Copyright 2014 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 UI_OZONE_PLATFORM_DRI_DRI_BUFFER_H_ 6 #define UI_OZONE_PLATFORM_DRI_DRI_BUFFER_H_ 7 8 #include "base/macros.h" 9 #include "skia/ext/refptr.h" 10 #include "third_party/skia/include/core/SkSurface.h" 11 #include "ui/ozone/platform/dri/scanout_buffer.h" 12 13 namespace ui { 14 15 class DriWrapper; 16 17 // Wrapper for a DRM allocated buffer. Keeps track of the native properties of 18 // the buffer and wraps the pixel memory into a SkSurface which can be used to 19 // draw into using Skia. 20 class DriBuffer : public ScanoutBuffer { 21 public: 22 DriBuffer(DriWrapper* dri); 23 24 // Allocates the backing pixels and wraps them in |surface_|. |info| is used 25 // to describe the buffer characteristics (size, color format). 26 bool Initialize(const SkImageInfo& info); 27 28 SkCanvas* GetCanvas() const; 29 30 // ScanoutBuffer: 31 virtual uint32_t GetFramebufferId() const OVERRIDE; 32 virtual uint32_t GetHandle() const OVERRIDE; 33 virtual gfx::Size GetSize() const OVERRIDE; 34 35 protected: 36 virtual ~DriBuffer(); 37 38 DriWrapper* dri_; // Not owned. 39 40 // Wrapper around the native pixel memory. 41 skia::RefPtr<SkSurface> surface_; 42 43 // Length of a row of pixels. 44 uint32_t stride_; 45 46 // Buffer handle used by the DRM allocator. 47 uint32_t handle_; 48 49 // Buffer ID used by the DRM modesettings API. This is set when the buffer is 50 // registered with the CRTC. 51 uint32_t framebuffer_; 52 53 DISALLOW_COPY_AND_ASSIGN(DriBuffer); 54 }; 55 56 class DriBufferGenerator : public ScanoutBufferGenerator { 57 public: 58 DriBufferGenerator(DriWrapper* dri); 59 virtual ~DriBufferGenerator(); 60 61 // ScanoutBufferGenerator: 62 virtual scoped_refptr<ScanoutBuffer> Create(const gfx::Size& size) OVERRIDE; 63 64 private: 65 DriWrapper* dri_; // Not owned. 66 67 DISALLOW_COPY_AND_ASSIGN(DriBufferGenerator); 68 }; 69 70 } // namespace ui 71 72 #endif // UI_OZONE_PLATFORM_DRI_DRI_BUFFER_H_ 73