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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_GFX_OZONE_IMPL_HARDWARE_DISPLAY_CONTROLLER_OZONE_H_ | 5 #ifndef UI_GFX_OZONE_IMPL_HARDWARE_DISPLAY_CONTROLLER_H_ |
6 #define UI_GFX_OZONE_IMPL_HARDWARE_DISPLAY_CONTROLLER_OZONE_H_ | 6 #define UI_GFX_OZONE_IMPL_HARDWARE_DISPLAY_CONTROLLER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 #include <xf86drmMode.h> | 10 #include <xf86drmMode.h> |
11 #include <vector> | 11 #include <vector> |
12 | 12 |
13 #include "base/basictypes.h" | 13 #include "base/basictypes.h" |
14 #include "base/memory/scoped_ptr.h" | 14 #include "base/memory/scoped_ptr.h" |
15 #include "ui/gfx/ozone/impl/drm_wrapper_ozone.h" | 15 #include "ui/gfx/ozone/impl/dri_wrapper.h" |
16 | 16 |
17 namespace gfx { | 17 namespace gfx { |
18 | 18 |
19 class SoftwareSurfaceOzone; | 19 class DriSurface; |
20 | 20 |
21 // The HDCOz will handle modesettings and scannout operations for hardware | 21 // The HDCOz will handle modesettings and scannout operations for hardware |
22 // devices. | 22 // devices. |
23 // | 23 // |
24 // In the DRM world there are 3 components that need to be paired up to be able | 24 // In the DRM world there are 3 components that need to be paired up to be able |
25 // to display an image to the monitor: CRTC (cathode ray tube controller), | 25 // to display an image to the monitor: CRTC (cathode ray tube controller), |
26 // encoder and connector. The CRTC determines which framebuffer to read, when | 26 // encoder and connector. The CRTC determines which framebuffer to read, when |
27 // to scanout and where to scanout. Encoders converts the stream from the CRTC | 27 // to scanout and where to scanout. Encoders converts the stream from the CRTC |
28 // to the appropriate format for the connector. The connector is the physical | 28 // to the appropriate format for the connector. The connector is the physical |
29 // connection that monitors connect to. | 29 // connection that monitors connect to. |
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68 // | CRTC1 | | 68 // | CRTC1 | |
69 // ---------------------- | 69 // ---------------------- |
70 // | 70 // |
71 // Note that it is possible to have more connectors than CRTCs which means that | 71 // Note that it is possible to have more connectors than CRTCs which means that |
72 // only a subset of connectors can be active independently, showing different | 72 // only a subset of connectors can be active independently, showing different |
73 // framebuffers. Though, in this case, it would be possible to have all | 73 // framebuffers. Though, in this case, it would be possible to have all |
74 // connectors active if some use the same CRTC to mirror the display. | 74 // connectors active if some use the same CRTC to mirror the display. |
75 // | 75 // |
76 // TODO(dnicoara) Need to have a way to detect events (such as monitor | 76 // TODO(dnicoara) Need to have a way to detect events (such as monitor |
77 // connected or disconnected). | 77 // connected or disconnected). |
78 class HardwareDisplayControllerOzone { | 78 class HardwareDisplayController { |
79 public: | 79 public: |
80 // Controller states. The state transitions will happen from top to bottom. | 80 // Controller states. The state transitions will happen from top to bottom. |
81 enum State { | 81 enum State { |
82 // When we allocate a HDCO as a stub. At this point there is no connector | 82 // When we allocate a HDCO as a stub. At this point there is no connector |
83 // and CRTC associated with this device. | 83 // and CRTC associated with this device. |
84 UNASSOCIATED, | 84 UNASSOCIATED, |
85 | 85 |
86 // When |SetControllerInfo| is called and the HDCO has the information of | 86 // When |SetControllerInfo| is called and the HDCO has the information of |
87 // the hardware it will control. At this point it knows everything it needs | 87 // the hardware it will control. At this point it knows everything it needs |
88 // to control the hardware but doesn't have a surface. | 88 // to control the hardware but doesn't have a surface. |
89 UNINITIALIZED, | 89 UNINITIALIZED, |
90 | 90 |
91 // A surface is associated with the HDCO. This means that the controller can | 91 // A surface is associated with the HDCO. This means that the controller can |
92 // potentially display the backing surface to the display. Though the | 92 // potentially display the backing surface to the display. Though the |
93 // surface framebuffer still needs to be registered with the CRTC. | 93 // surface framebuffer still needs to be registered with the CRTC. |
94 SURFACE_INITIALIZED, | 94 SURFACE_INITIALIZED, |
95 | 95 |
96 // The CRTC now knows about the surface attributes. | 96 // The CRTC now knows about the surface attributes. |
97 INITIALIZED, | 97 INITIALIZED, |
98 | 98 |
99 // Error state if any of the initialization steps fail. | 99 // Error state if any of the initialization steps fail. |
100 FAILED, | 100 FAILED, |
101 }; | 101 }; |
102 | 102 |
103 HardwareDisplayControllerOzone(); | 103 HardwareDisplayController(); |
104 | 104 |
105 ~HardwareDisplayControllerOzone(); | 105 ~HardwareDisplayController(); |
106 | 106 |
107 // Set the hardware configuration for this HDCO. Once this is set, the HDCO is | 107 // Set the hardware configuration for this HDCO. Once this is set, the HDCO is |
108 // responsible for keeping track of the connector and CRTC and cleaning up | 108 // responsible for keeping track of the connector and CRTC and cleaning up |
109 // when it is destroyed. | 109 // when it is destroyed. |
110 void SetControllerInfo(DrmWrapperOzone* drm, | 110 void SetControllerInfo(DriWrapper* drm, |
111 uint32_t connector_id, | 111 uint32_t connector_id, |
112 uint32_t crtc_id, | 112 uint32_t crtc_id, |
113 uint32_t dpms_property_id, | 113 uint32_t dpms_property_id, |
114 drmModeModeInfo mode); | 114 drmModeModeInfo mode); |
115 | 115 |
116 // Associate the HDCO with a surface implementation and initialize it. | 116 // Associate the HDCO with a surface implementation and initialize it. |
117 bool BindSurfaceToController(scoped_ptr<SoftwareSurfaceOzone> surface); | 117 bool BindSurfaceToController(scoped_ptr<DriSurface> surface); |
118 | 118 |
119 // Schedules the |surface_|'s framebuffer to be displayed on the next vsync | 119 // Schedules the |surface_|'s framebuffer to be displayed on the next vsync |
120 // event. The event will be posted on the graphics card file descriptor |fd_| | 120 // event. The event will be posted on the graphics card file descriptor |fd_| |
121 // and it can be read and processed by |drmHandleEvent|. That function can | 121 // and it can be read and processed by |drmHandleEvent|. That function can |
122 // define the callback for the page flip event. A generic data argument will | 122 // define the callback for the page flip event. A generic data argument will |
123 // be presented to the callback. We use that argument to pass in the HDCO | 123 // be presented to the callback. We use that argument to pass in the HDCO |
124 // object the event belongs to. | 124 // object the event belongs to. |
125 // | 125 // |
126 // Between this call and the callback, the framebuffer used in this call | 126 // Between this call and the callback, the framebuffer used in this call |
127 // should not be modified in any way as it would cause screen tearing if the | 127 // should not be modified in any way as it would cause screen tearing if the |
128 // hardware performed the flip. Note that the frontbuffer should also not | 128 // hardware performed the flip. Note that the frontbuffer should also not |
129 // be modified as it could still be displayed. | 129 // be modified as it could still be displayed. |
130 // | 130 // |
131 // Note that this function does not block. Also, this function should not be | 131 // Note that this function does not block. Also, this function should not be |
132 // called again before the page flip occurrs. | 132 // called again before the page flip occurrs. |
133 // | 133 // |
134 // Returns true if the page flip was successfully registered, false otherwise. | 134 // Returns true if the page flip was successfully registered, false otherwise. |
135 bool SchedulePageFlip(); | 135 bool SchedulePageFlip(); |
136 | 136 |
137 State get_state() const { return state_; }; | 137 State get_state() const { return state_; }; |
138 | 138 |
139 int get_fd() const { return drm_->get_fd(); }; | 139 int get_fd() const { return drm_->get_fd(); }; |
140 | 140 |
141 const drmModeModeInfo& get_mode() const { return mode_; }; | 141 const drmModeModeInfo& get_mode() const { return mode_; }; |
142 | 142 |
143 SoftwareSurfaceOzone* get_surface() const { return surface_.get(); }; | 143 DriSurface* get_surface() const { return surface_.get(); }; |
144 | 144 |
145 private: | 145 private: |
146 // Object containing the connection to the graphics device and wraps the API | 146 // Object containing the connection to the graphics device and wraps the API |
147 // calls to control it. | 147 // calls to control it. |
148 DrmWrapperOzone* drm_; | 148 DriWrapper* drm_; |
149 | 149 |
150 // TODO(dnicoara) Need to allow a CRTC to have multiple connectors. | 150 // TODO(dnicoara) Need to allow a CRTC to have multiple connectors. |
151 uint32_t connector_id_; | 151 uint32_t connector_id_; |
152 | 152 |
153 uint32_t crtc_id_; | 153 uint32_t crtc_id_; |
154 | 154 |
155 uint32_t dpms_property_id_; | 155 uint32_t dpms_property_id_; |
156 | 156 |
157 // TODO(dnicoara) Need to store all the modes. | 157 // TODO(dnicoara) Need to store all the modes. |
158 drmModeModeInfo mode_; | 158 drmModeModeInfo mode_; |
159 | 159 |
160 // Saved CRTC state from before we used it. Need it to restore state once we | 160 // Saved CRTC state from before we used it. Need it to restore state once we |
161 // are finished using this device. | 161 // are finished using this device. |
162 drmModeCrtc* saved_crtc_; | 162 drmModeCrtc* saved_crtc_; |
163 | 163 |
164 State state_; | 164 State state_; |
165 | 165 |
166 scoped_ptr<SoftwareSurfaceOzone> surface_; | 166 scoped_ptr<DriSurface> surface_; |
167 | 167 |
168 DISALLOW_COPY_AND_ASSIGN(HardwareDisplayControllerOzone); | 168 DISALLOW_COPY_AND_ASSIGN(HardwareDisplayController); |
169 }; | 169 }; |
170 | 170 |
171 } // namespace gfx | 171 } // namespace gfx |
172 | 172 |
173 #endif // UI_GFX_OZONE_IMPL_HARDWARE_DISPLAY_CONTROLLER_OZONE_H_ | 173 #endif // UI_GFX_OZONE_IMPL_HARDWARE_DISPLAY_CONTROLLER_H_ |
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