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| 1 // Copyright 2017 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 #if !defined(__has_feature) || !__has_feature(objc_arc) |
| 6 #error "This file requires ARC support." |
| 7 #endif |
| 8 |
| 9 |
| 10 #import <Foundation/Foundation.h> |
| 11 #import <GLKit/GLKit.h> |
| 12 |
| 13 #import "remoting/client/display/sys_opengl.h" |
| 14 #import "remoting/client/ios/display/gl_demo_screen.h" |
| 15 #import "remoting/client/ios/display/gl_display_handler.h" |
| 16 |
| 17 #include "base/macros.h" |
| 18 #include "base/memory/ptr_util.h" |
| 19 #include "base/memory/weak_ptr.h" |
| 20 #include "remoting/client/chromoting_client.h" |
| 21 #include "remoting/client/display/gl_canvas.h" |
| 22 #include "remoting/client/display/gl_renderer.h" |
| 23 #include "remoting/client/display/gl_renderer_delegate.h" |
| 24 #include "remoting/client/dual_buffer_frame_consumer.h" |
| 25 #include "remoting/client/ios/app_runtime.h" |
| 26 #include "remoting/client/software_video_renderer.h" |
| 27 |
| 28 namespace remoting { |
| 29 namespace GlDisplayHandler { |
| 30 |
| 31 // The core that lives on the display thread. |
| 32 class Core : public GlRendererDelegate { |
| 33 public: |
| 34 Core(remoting::ios::AppRuntime* runtime); |
| 35 ~Core() override; |
| 36 |
| 37 // GlRendererDelegate interface. |
| 38 bool CanRenderFrame() override; |
| 39 void OnFrameRendered() override; |
| 40 void OnSizeChanged(int width, int height) override; |
| 41 |
| 42 void Created(); |
| 43 void SurfaceChanged(int width, int height); |
| 44 std::unique_ptr<protocol::FrameConsumer> GrabFrameConsumer(); |
| 45 base::WeakPtr<Core> GetWeakPtr(); |
| 46 |
| 47 private: |
| 48 // Will be std::move'd when GrabFrameConsumer() is called. |
| 49 remoting::ios::AppRuntime* runtime_; |
| 50 std::unique_ptr<DualBufferFrameConsumer> owned_frame_consumer_; |
| 51 |
| 52 base::WeakPtr<DualBufferFrameConsumer> frame_consumer_; |
| 53 EAGLContext* eagl_context_; |
| 54 GlRenderer renderer_; |
| 55 GlDemoScreen demo_screen_; |
| 56 |
| 57 // Used on display thread. |
| 58 base::WeakPtr<Core> weak_ptr_; |
| 59 base::WeakPtrFactory<Core> weak_factory_; |
| 60 |
| 61 DISALLOW_COPY_AND_ASSIGN(Core); |
| 62 }; |
| 63 |
| 64 Core::Core(remoting::ios::AppRuntime* runtime) |
| 65 : runtime_(runtime), weak_factory_(this) { |
| 66 weak_ptr_ = weak_factory_.GetWeakPtr(); |
| 67 renderer_.SetDelegate(weak_ptr_); |
| 68 owned_frame_consumer_.reset(new remoting::DualBufferFrameConsumer( |
| 69 base::Bind(&remoting::GlRenderer::OnFrameReceived, |
| 70 renderer_.GetWeakPtr()), |
| 71 runtime_->display_task_runner(), |
| 72 remoting::protocol::FrameConsumer::PixelFormat::FORMAT_RGBA)); |
| 73 frame_consumer_ = owned_frame_consumer_->GetWeakPtr(); |
| 74 renderer_.AddDrawable(demo_screen_.GetWeakPtr()); |
| 75 } |
| 76 |
| 77 Core::~Core() {} |
| 78 |
| 79 bool Core::CanRenderFrame() { |
| 80 DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread()); |
| 81 return eagl_context_ != NULL; |
| 82 } |
| 83 |
| 84 std::unique_ptr<protocol::FrameConsumer> Core::GrabFrameConsumer() { |
| 85 DCHECK(owned_frame_consumer_) << "The frame consumer is already grabbed."; |
| 86 return std::move(owned_frame_consumer_); |
| 87 } |
| 88 |
| 89 void Core::OnFrameRendered() { |
| 90 // Nothing to do. |
| 91 } |
| 92 |
| 93 void Core::OnSizeChanged(int width, int height) { |
| 94 // Nothing to do. |
| 95 } |
| 96 |
| 97 void Core::Created() { |
| 98 DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread()); |
| 99 DCHECK(!eagl_context_); |
| 100 |
| 101 eagl_context_ = [EAGLContext currentContext]; |
| 102 renderer_.RequestCanvasSize(); |
| 103 |
| 104 renderer_.OnSurfaceCreated(base::MakeUnique<GlCanvas>( |
| 105 static_cast<int>([eagl_context_ API]))); |
| 106 } |
| 107 |
| 108 void Core::SurfaceChanged(int width, int height) { |
| 109 DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread()); |
| 110 renderer_.OnSurfaceChanged(width, height); |
| 111 } |
| 112 |
| 113 base::WeakPtr<remoting::GlDisplayHandler::Core> Core::GetWeakPtr() { |
| 114 return weak_ptr_; |
| 115 } |
| 116 |
| 117 } // namespace GlDisplayHandler |
| 118 } // namespace remoting |
| 119 |
| 120 @interface GlDisplayHandler () |
| 121 @property(nonatomic) remoting::GlDisplayHandler::Core* core_; |
| 122 @property(nonatomic) remoting::ios::AppRuntime* runtime_; |
| 123 @end |
| 124 |
| 125 @implementation GlDisplayHandler |
| 126 |
| 127 @synthesize core_ = _core_; |
| 128 @synthesize runtime_ = _runtime_; |
| 129 |
| 130 - (id)initWithRuntime:(remoting::ios::AppRuntime*)runtime { |
| 131 self.runtime_ = runtime; |
| 132 return self; |
| 133 } |
| 134 |
| 135 - (void)created { |
| 136 _core_ = new remoting::GlDisplayHandler::Core(self.runtime_); |
| 137 |
| 138 self.runtime_->display_task_runner()->PostTask( |
| 139 FROM_HERE, base::Bind(&remoting::GlDisplayHandler::Core::Created, |
| 140 self.core_->GetWeakPtr())); |
| 141 } |
| 142 |
| 143 - (std::unique_ptr<remoting::protocol::VideoRenderer>)CreateVideoRenderer { |
| 144 return base::MakeUnique<remoting::SoftwareVideoRenderer>( |
| 145 _core_->GrabFrameConsumer()); |
| 146 } |
| 147 |
| 148 // In general, avoid expensive work in this function to maximize frame rate. |
| 149 - (void)glkView:(GLKView*)view drawInRect:(CGRect)rect { |
| 150 if (_core_) { |
| 151 _core_->SurfaceChanged(rect.size.width, rect.size.height); |
| 152 } |
| 153 } |
| 154 |
| 155 @end |
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