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| 1 // Copyright 2016 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 REMOTING_CLIENT_GL_RENDERER_H_ | |
| 6 #define REMOTING_CLIENT_GL_RENDERER_H_ | |
| 7 | |
| 8 #include <queue> | |
| 9 | |
| 10 #include "base/callback.h" | |
| 11 #include "base/macros.h" | |
| 12 #include "base/memory/weak_ptr.h" | |
| 13 #include "base/threading/thread_checker.h" | |
| 14 #include "remoting/client/gl_cursor.h" | |
| 15 #include "remoting/client/gl_cursor_feedback.h" | |
| 16 #include "remoting/client/gl_desktop.h" | |
| 17 #include "remoting/proto/control.pb.h" | |
| 18 | |
| 19 namespace webrtc { | |
| 20 class DesktopFrame; | |
| 21 } // namespace webrtc | |
| 22 | |
| 23 namespace remoting { | |
| 24 | |
| 25 namespace protocol { | |
| 26 class CursorShapeInfo; | |
| 27 } // namespace protocol | |
| 28 | |
| 29 class GlCanvas; | |
| 30 class GlRendererDelegate; | |
| 31 class GlRendererTest; | |
| 32 | |
| 33 // Renders desktop and cursor on the OpenGL surface. Can be created on any | |
| 34 // thread but thereafter must be used and deleted on the same thread (usually | |
| 35 // the display thread. Or any Chromium thread with a task runner attached to | |
| 36 // it) unless otherwise noted. | |
| 37 // The unit of all length arguments is pixel. | |
| 38 class GlRenderer { | |
| 39 public: | |
| 40 explicit GlRenderer(); | |
| 41 ~GlRenderer(); | |
| 42 | |
| 43 // The delegate can be set on any hread no more than once before calling any | |
| 44 // On* functions. | |
| 45 void SetDelegate(base::WeakPtr<GlRendererDelegate> delegate); | |
| 46 | |
| 47 // Notifies the delegate with the current canvas size. Canvas size will be | |
| 48 // (0, 0) if no desktop frame is received yet. | |
| 49 // Caller can use this function to get the canvas size when the surface is | |
| 50 // recreated. | |
| 51 void RequestCanvasSize(); | |
| 52 | |
| 53 // Sets the pixel based transformation matrix related to the size of the | |
| 54 // canvas. | |
| 55 // 3 by 3 transformation matrix, [ m0, m1, m2, m3, m4, m5, m6, m7, m8 ]. | |
| 56 // | |
| 57 // | m0, m1, m2, | | x | | |
| 58 // | m3, m4, m5, | * | y | | |
| 59 // | m6, m7, m8 | | 1 | | |
| 60 // | |
| 61 // The final size of the canvas will be (m0*canvas_width, m4*canvas_height) | |
| 62 // and the top-left corner will be (m2, m5) in pixel coordinates. | |
| 63 void OnPixelTransformationChanged(const std::array<float, 9>& matrix); | |
| 64 | |
| 65 void OnCursorMoved(float x, float y); | |
| 66 | |
| 67 void OnCursorInputFeedback(float x, float y, float diameter); | |
| 68 | |
| 69 void OnCursorVisibilityChanged(bool visible); | |
| 70 | |
| 71 // Called when a desktop frame is received. | |
| 72 // The size of the canvas is determined by the dimension of the desktop frame. | |
| 73 // |done| will be queued up and called on the display thread after the actual | |
| 74 // rendering happens. | |
| 75 void OnFrameReceived(std::unique_ptr<webrtc::DesktopFrame> frame, | |
| 76 const base::Closure& done); | |
| 77 | |
| 78 void OnCursorShapeChanged(const protocol::CursorShapeInfo& shape); | |
| 79 | |
| 80 // Called after the EGL/EAGL context is established and the surface is created | |
| 81 // (or recreated). Previous desktop frame and canvas transformation will be | |
| 82 // lost after calling this function. | |
| 83 // Caller must call OnSurfaceDestroyed() before calling this function if the | |
| 84 // surface is recreated. | |
| 85 void OnSurfaceCreated(int gl_version); | |
| 86 | |
| 87 // Sets the size of the view. Called right after OnSurfaceCreated() or | |
| 88 // whenever the view size is changed. | |
| 89 void OnSurfaceChanged(int view_width, int view_height); | |
| 90 | |
| 91 // Called when the surface is destroyed. | |
| 92 void OnSurfaceDestroyed(); | |
| 93 | |
| 94 // Returns the weak pointer to be used on the display thread. | |
| 95 base::WeakPtr<GlRenderer> GetWeakPtr(); | |
| 96 | |
| 97 private: | |
| 98 friend class GlRendererTest; | |
| 99 | |
| 100 // Post a rendering task to the task runner of current thread. | |
| 101 // Do nothing if render_callback_ is not set yet or an existing rendering task | |
| 102 // in the queue will cover changes before this function is called. | |
| 103 void RequestRender(); | |
| 104 | |
| 105 // Draws out everything on current OpenGL buffer and runs closures in | |
| 106 // |pending_done_callbacks_|. | |
| 107 // Nothing will be drawn nor the done callbacks will be run if |delegate_| is | |
| 108 // invalid or !delegate_.CanRenderFrame(). | |
| 109 void OnRender(); | |
| 110 | |
| 111 base::WeakPtr<GlRendererDelegate> delegate_; | |
| 112 | |
| 113 // Done callbacks from OnFrameReceived. Will all be called once rendering | |
| 114 // takes place. | |
| 115 std::queue<base::Closure> pending_done_callbacks_; | |
| 116 | |
| 117 bool render_scheduled_ = false; | |
| 118 | |
| 119 int canvas_width_ = 0; | |
| 120 int canvas_height_ = 0; | |
| 121 | |
| 122 std::unique_ptr<GlCanvas> canvas_; | |
| 123 | |
| 124 GlCursor cursor_; | |
| 125 GlCursorFeedback cursor_feedback_; | |
| 126 GlDesktop desktop_; | |
| 127 | |
| 128 base::ThreadChecker thread_checker_; | |
| 129 base::WeakPtr<GlRenderer> weak_ptr_; | |
| 130 base::WeakPtrFactory<GlRenderer> weak_factory_; | |
| 131 | |
| 132 DISALLOW_COPY_AND_ASSIGN(GlRenderer); | |
| 133 }; | |
| 134 | |
| 135 } // namespace remoting | |
| 136 | |
| 137 #endif // REMOTING_CLIENT_GL_RENDERER_H_ | |
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Chromium Code Reviews
Issue 2614443003:
Moving the GL implementation details into a sub folder for client display. (Closed)
