1 // Copyright (c) 2013 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.
5 #ifndef UI_GFX_OZONE_SURFACE_LNUX_FACTORY_OZONE_H_
6 #define UI_GFX_OZONE_SURFACE_LNUX_FACTORY_OZONE_H_
8 #include "base/callback.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/native_library.h"
11 #include "ui/gfx/geometry/point.h"
12 #include "ui/gfx/geometry/rect.h"
13 #include "ui/gfx/gfx_export.h"
14 #include "ui/gfx/native_widget_types.h"
15 #include "ui/gfx/overlay_transform.h"
16 #include "ui/gfx/rect.h"
23 class OverlayCandidatesOzone;
24 class SurfaceOzoneCanvas;
25 class SurfaceOzoneEGL;
26 typedef intptr_t NativeBufferOzone;
28 // The Ozone interface allows external implementations to hook into Chromium to
29 // provide a system specific implementation. The Ozone interface supports two
30 // drawing modes: 1) accelerated drawing through EGL and 2) software drawing
33 // If you want to paint on a window with ozone, you need to create a
34 // SurfaceOzoneEGL or SurfaceOzoneCanvas for that window. The platform can
35 // support software, EGL, or both for painting on the window.
36 // The following functionality is specific to the drawing mode and may not have
37 // any meaningful implementation in the other mode. An implementation must
38 // provide functionality for at least one mode.
40 // 1) Accelerated Drawing (EGL path):
42 // The following functions are specific to EGL:
44 // - LoadEGLGLES2Bindings
45 // - GetEGLSurfaceProperties (optional if the properties match the default
47 // - CreateEGLSurfaceForWidget
49 // 2) Software Drawing (Skia):
51 // The following function is specific to the software path:
52 // - CreateCanvasForWidget
54 // The accelerated path can optionally provide support for the software drawing
57 // The remaining functions are not covered since they are needed in both drawing
58 // modes (See comments bellow for descriptions).
59 class GFX_EXPORT SurfaceFactoryOzone {
61 // Describes the state of the hardware after initialization.
68 // Describes overlay buffer format.
69 // TODO: this is a placeholder for now and will be populated with more
70 // formats once we know what sorts of content, video, etc. we can support.
77 typedef void*(*GLGetProcAddressProc)(const char* name);
78 typedef base::Callback<void(base::NativeLibrary)> AddGLLibraryCallback;
79 typedef base::Callback<void(GLGetProcAddressProc)>
80 SetGLGetProcAddressProcCallback;
82 SurfaceFactoryOzone();
83 virtual ~SurfaceFactoryOzone();
85 // Returns the instance
86 static SurfaceFactoryOzone* GetInstance();
88 // Sets the implementation delegate. Ownership is retained by the caller.
89 static void SetInstance(SurfaceFactoryOzone* impl);
91 // Configures the display hardware. Must be called from within the GPU
92 // process before the sandbox has been activated.
93 virtual HardwareState InitializeHardware() = 0;
95 // Cleans up display hardware state. Call this from within the GPU process.
96 // This method must be safe to run inside of the sandbox.
97 virtual void ShutdownHardware() = 0;
99 // Returns native platform display handle. This is used to obtain the EGL
100 // display connection for the native display.
101 virtual intptr_t GetNativeDisplay();
103 // Obtains an AcceleratedWidget backed by a native Linux framebuffer.
104 // The returned AcceleratedWidget is an opaque token that must realized
105 // before it can be used to create a GL surface.
106 virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0;
108 // Create SurfaceOzoneEGL for the specified gfx::AcceleratedWidget.
110 // Note: When used from content, this is called in the GPU process. The
111 // platform must support creation of SurfaceOzoneEGL from the GPU process
112 // using only the handle contained in gfx::AcceleratedWidget.
113 virtual scoped_ptr<SurfaceOzoneEGL> CreateEGLSurfaceForWidget(
114 gfx::AcceleratedWidget widget);
116 // Create SurfaceOzoneCanvas for the specified gfx::AcceleratedWidget.
118 // Note: The platform must support creation of SurfaceOzoneCanvas from the
119 // Browser Process using only the handle contained in gfx::AcceleratedWidget.
120 virtual scoped_ptr<SurfaceOzoneCanvas> CreateCanvasForWidget(
121 gfx::AcceleratedWidget widget);
123 // Sets up GL bindings for the native surface. Takes two callback parameters
124 // that allow Ozone to register the GL bindings.
125 virtual bool LoadEGLGLES2Bindings(
126 AddGLLibraryCallback add_gl_library,
127 SetGLGetProcAddressProcCallback set_gl_get_proc_address) = 0;
129 // Returns an array of EGL properties, which can be used in any EGL function
130 // used to select a display configuration. Note that all properties should be
131 // immediately followed by the corresponding desired value and array should be
132 // terminated with EGL_NONE. Ownership of the array is not transferred to
133 // caller. desired_list contains list of desired EGL properties and values.
134 virtual const int32* GetEGLSurfaceProperties(const int32* desired_list);
136 // Get the hal struct to check for overlay support.
137 virtual gfx::OverlayCandidatesOzone* GetOverlayCandidates(
138 gfx::AcceleratedWidget w);
140 // Sets the overlay plane to switch to at the next page flip.
141 // |plane_z_order| specifies the stacking order of the plane relative to the
142 // main framebuffer located at index 0.
143 // |plane_transform| specifies how the buffer is to be transformed during.
145 // |buffer| to be presented by the overlay.
146 // |display_bounds| specify where it is supposed to be on the screen.
147 // |crop_rect| specifies the region within the buffer to be placed inside
149 virtual void ScheduleOverlayPlane(gfx::AcceleratedWidget w,
151 gfx::OverlayTransform plane_transform,
152 gfx::NativeBufferOzone buffer,
153 const gfx::Rect& display_bounds,
154 gfx::RectF crop_rect);
156 // Cleate a single native buffer to be used for overlay planes.
157 virtual gfx::NativeBufferOzone CreateNativeBuffer(gfx::Size size,
158 BufferFormat format);
161 static SurfaceFactoryOzone* impl_; // not owned
166 #endif // UI_GFX_OZONE_SURFACE_LNUX_FACTORY_OZONE_H_