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Side by Side Diff: trunk/src/ui/ozone/platform/dri/hardware_display_controller.h

Issue 447073004: Revert 288137 "With the overlay path moving back to passing Acce..." (Closed) Base URL: svn://svn.chromium.org/chrome/
Patch Set: Created 6 years, 4 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 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 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_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_CONTROLLER_H_ 5 #ifndef UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_CONTROLLER_H_
6 #define UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_CONTROLLER_H_ 6 #define UI_OZONE_PLATFORM_DRI_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>
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113 // framebuffer for |primary| with |mode|. 113 // framebuffer for |primary| with |mode|.
114 bool Modeset(const OverlayPlane& primary, 114 bool Modeset(const OverlayPlane& primary,
115 drmModeModeInfo mode); 115 drmModeModeInfo mode);
116 116
117 // Reconfigures the CRTC with the current surface and mode. 117 // Reconfigures the CRTC with the current surface and mode.
118 bool Enable(); 118 bool Enable();
119 119
120 // Disables the CRTC. 120 // Disables the CRTC.
121 void Disable(); 121 void Disable();
122 122
123 void QueueOverlayPlane(const OverlayPlane& plane);
124
125 // Schedules the |overlays|' framebuffers to be displayed on the next vsync 123 // Schedules the |overlays|' framebuffers to be displayed on the next vsync
126 // event. The event will be posted on the graphics card file descriptor |fd_| 124 // event. The event will be posted on the graphics card file descriptor |fd_|
127 // and it can be read and processed by |drmHandleEvent|. That function can 125 // and it can be read and processed by |drmHandleEvent|. That function can
128 // define the callback for the page flip event. A generic data argument will 126 // define the callback for the page flip event. A generic data argument will
129 // be presented to the callback. We use that argument to pass in the HDCO 127 // be presented to the callback. We use that argument to pass in the HDCO
130 // object the event belongs to. 128 // object the event belongs to.
131 // 129 //
132 // Between this call and the callback, the framebuffers used in this call 130 // Between this call and the callback, the framebuffers used in this call
133 // should not be modified in any way as it would cause screen tearing if the 131 // should not be modified in any way as it would cause screen tearing if the
134 // hardware performed the flip. Note that the frontbuffer should also not 132 // hardware performed the flip. Note that the frontbuffer should also not
135 // be modified as it could still be displayed. 133 // be modified as it could still be displayed.
136 // 134 //
137 // Note that this function does not block. Also, this function should not be 135 // Note that this function does not block. Also, this function should not be
138 // called again before the page flip occurrs. 136 // called again before the page flip occurrs.
139 // 137 //
140 // Returns true if the page flip was successfully registered, false otherwise. 138 // Returns true if the page flip was successfully registered, false otherwise.
141 bool SchedulePageFlip(); 139 bool SchedulePageFlip(const OverlayPlaneList& overlays);
142 140
143 // TODO(dnicoara) This should be on the MessageLoop when Ozone can have 141 // TODO(dnicoara) This should be on the MessageLoop when Ozone can have
144 // BeginFrame can be triggered explicitly by Ozone. 142 // BeginFrame can be triggered explicitly by Ozone.
145 void WaitForPageFlipEvent(); 143 void WaitForPageFlipEvent();
146 144
147 // Called when the page flip event occurred. The event is provided by the 145 // Called when the page flip event occurred. The event is provided by the
148 // kernel when a VBlank event finished. This allows the controller to 146 // kernel when a VBlank event finished. This allows the controller to
149 // update internal state and propagate the update to the surface. 147 // update internal state and propagate the update to the surface.
150 // The tuple (seconds, useconds) represents the event timestamp. |seconds| 148 // The tuple (seconds, useconds) represents the event timestamp. |seconds|
151 // represents the number of seconds while |useconds| represents the 149 // represents the number of seconds while |useconds| represents the
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208 // 2) decremented when the page flip callback is triggered, 206 // 2) decremented when the page flip callback is triggered,
209 // 3) reset to 0 when a drmModeSetCrtc is called (via the DriWrapper). 207 // 3) reset to 0 when a drmModeSetCrtc is called (via the DriWrapper).
210 uint32_t pending_page_flips_; 208 uint32_t pending_page_flips_;
211 209
212 DISALLOW_COPY_AND_ASSIGN(HardwareDisplayController); 210 DISALLOW_COPY_AND_ASSIGN(HardwareDisplayController);
213 }; 211 };
214 212
215 } // namespace ui 213 } // namespace ui
216 214
217 #endif // UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_CONTROLLER_H_ 215 #endif // UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_CONTROLLER_H_
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