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| 1 // Copyright (c) 2012 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 #include "content/common/gpu/media/rendering_helper.h" | |
| 6 | |
| 7 #import <Cocoa/Cocoa.h> | |
| 8 #import <OpenGL/CGLMacro.h> | |
| 9 | |
| 10 #include "base/mac/scoped_nsautorelease_pool.h" | |
| 11 #include "base/memory/scoped_nsobject.h" | |
| 12 #include "base/message_loop.h" | |
| 13 #include "base/synchronization/waitable_event.h" | |
| 14 | |
| 15 // Gets the pixel format to be used by the OpenGL view. | |
| 16 static scoped_nsobject<NSOpenGLPixelFormat> GetPixelFormat() { | |
| 17 NSOpenGLPixelFormatAttribute attributes[] = { | |
| 18 NSOpenGLPFAWindow, | |
| 19 NSOpenGLPFADoubleBuffer, | |
| 20 NSOpenGLPFAAccelerated, | |
| 21 NSOpenGLPFANoRecovery, | |
| 22 NSOpenGLPFAColorSize, (NSOpenGLPixelFormatAttribute)32, | |
| 23 NSOpenGLPFAAlphaSize, (NSOpenGLPixelFormatAttribute)8, | |
| 24 NSOpenGLPFADepthSize, (NSOpenGLPixelFormatAttribute)24, | |
| 25 (NSOpenGLPixelFormatAttribute)0 | |
| 26 }; | |
| 27 return scoped_nsobject<NSOpenGLPixelFormat>( | |
| 28 [[NSOpenGLPixelFormat alloc] initWithAttributes:attributes]); | |
| 29 } | |
| 30 | |
| 31 // Gets the CGLContext from the given OpenGL view. | |
| 32 static CGLContextObj GetCGLContext(NSOpenGLView* gl_view) { | |
| 33 return static_cast<CGLContextObj>([[gl_view openGLContext] CGLContextObj]); | |
| 34 } | |
| 35 | |
| 36 // Sets up a view port for the OpenGL view. | |
| 37 static void SetupGLViewPort(NSOpenGLView* gl_view, int width, int height) { | |
| 38 CGLContextObj cgl_ctx = GetCGLContext(gl_view); | |
| 39 glViewport(0, 0, width, height); | |
| 40 glClearColor(1.0, 0.0, 0.0, 0.0); | |
| 41 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | |
| 42 [[gl_view openGLContext] flushBuffer]; | |
| 43 CHECK_EQ(static_cast<int>(glGetError()), GL_NO_ERROR); | |
| 44 } | |
| 45 | |
| 46 // Draw the given texture to the OpenGL view. | |
| 47 static void DrawTexture(NSOpenGLView* gl_view, | |
| 48 GLuint texture_id, | |
| 49 bool suppress_swap_to_display) { | |
| 50 CGLContextObj cgl_ctx = GetCGLContext(gl_view); | |
| 51 [gl_view lockFocus]; | |
| 52 | |
| 53 GLfloat width = [gl_view bounds].size.width; | |
| 54 GLfloat height = [gl_view bounds].size.height; | |
| 55 | |
| 56 glEnable(GL_TEXTURE_RECTANGLE_ARB); | |
| 57 glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture_id); | |
| 58 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); | |
| 59 | |
| 60 glBegin(GL_QUADS); | |
| 61 glTexCoord2f(0.0, height); | |
| 62 glVertex3f(-1.0, -1.0, 0.0); | |
| 63 glTexCoord2f(width, height); | |
| 64 glVertex3f(1.0, -1.0, 0.0); | |
| 65 glTexCoord2f(width, 0.0); | |
| 66 glVertex3f(1.0, 1.0, 0.0); | |
| 67 glTexCoord2f(0.0, 0.0); | |
| 68 glVertex3f(-1.0, 1.0, 0.0); | |
| 69 glEnd(); | |
| 70 | |
| 71 glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0); | |
| 72 glDisable(GL_TEXTURE_RECTANGLE_ARB); | |
| 73 | |
| 74 if (!suppress_swap_to_display) | |
| 75 [[gl_view openGLContext] flushBuffer]; | |
| 76 [gl_view unlockFocus]; | |
| 77 CHECK_EQ(static_cast<int>(glGetError()), GL_NO_ERROR); | |
| 78 } | |
| 79 | |
| 80 namespace content { | |
| 81 | |
| 82 class RenderingHelperMac : public RenderingHelper { | |
| 83 public: | |
| 84 RenderingHelperMac(); | |
| 85 virtual ~RenderingHelperMac(); | |
| 86 | |
| 87 // Implement RenderingHelper. | |
| 88 virtual void Initialize(bool suppress_swap_to_display, | |
| 89 int num_windows, | |
| 90 const std::vector<gfx::Size>& dimensions, | |
| 91 base::WaitableEvent* done) OVERRIDE; | |
| 92 virtual void UnInitialize(base::WaitableEvent* done) OVERRIDE; | |
| 93 virtual void CreateTexture(int window_id, | |
| 94 uint32 texture_target, | |
| 95 GLuint* texture_id, | |
| 96 base::WaitableEvent* done) OVERRIDE; | |
| 97 virtual void RenderTexture(GLuint texture_id) OVERRIDE; | |
| 98 virtual void DeleteTexture(GLuint texture_id) OVERRIDE; | |
| 99 virtual void* GetGLContext() OVERRIDE; | |
| 100 virtual void* GetGLDisplay() OVERRIDE; | |
| 101 | |
| 102 private: | |
| 103 base::MessageLoop* message_loop_; | |
| 104 int width_; | |
| 105 int height_; | |
| 106 bool suppress_swap_to_display_; | |
| 107 scoped_nsobject<NSWindow> window_; | |
| 108 scoped_nsobject<NSOpenGLView> gl_view_; | |
| 109 base::mac::ScopedNSAutoreleasePool pool_; | |
| 110 }; | |
| 111 | |
| 112 // static | |
| 113 RenderingHelper* RenderingHelper::Create() { | |
| 114 return new RenderingHelperMac; | |
| 115 } | |
| 116 | |
| 117 // static | |
| 118 void RenderingHelper::InitializePlatform() { | |
| 119 // Initialize the Cocoa framework. | |
| 120 base::mac::ScopedNSAutoreleasePool pool_; | |
| 121 [NSApplication sharedApplication]; | |
| 122 } | |
| 123 | |
| 124 RenderingHelperMac::RenderingHelperMac() | |
| 125 : message_loop_(NULL), | |
| 126 width_(0), | |
| 127 height_(0), | |
| 128 suppress_swap_to_display_(false) { | |
| 129 } | |
| 130 | |
| 131 RenderingHelperMac::~RenderingHelperMac() { | |
| 132 CHECK_EQ(width_, 0) << "Must call UnInitialize before dtor."; | |
| 133 } | |
| 134 | |
| 135 void RenderingHelperMac::Initialize( | |
| 136 bool suppress_swap_to_display, | |
| 137 int num_windows, | |
| 138 const std::vector<gfx::Size>& dimensions, | |
| 139 base::WaitableEvent* done) { | |
| 140 // Use width_ != 0 as a proxy for the class having already been | |
| 141 // Initialize()'d, and UnInitialize() before continuing. | |
| 142 if (width_) { | |
| 143 base::WaitableEvent done2(false, false); | |
| 144 UnInitialize(&done2); | |
| 145 done2.Wait(); | |
| 146 } | |
| 147 | |
| 148 // A separate window is created for each decoder. Since the Mac API | |
| 149 // only supports a single instance only one window should be created. | |
| 150 CHECK_EQ(num_windows, 1); | |
| 151 | |
| 152 // There should be only one window dimension as only one window is created. | |
| 153 CHECK_EQ(dimensions.size(), 1U); | |
| 154 width_ = dimensions[0].width(); | |
| 155 height_ = dimensions[0].height(); | |
| 156 suppress_swap_to_display_ = suppress_swap_to_display; | |
| 157 message_loop_ = base::MessageLoop::current(); | |
| 158 | |
| 159 // Create a window to host the OpenGL contents. | |
| 160 NSRect rect = NSMakeRect(0, 0, width_, height_); | |
| 161 window_.reset([[NSWindow alloc] | |
| 162 initWithContentRect:rect | |
| 163 styleMask:NSTitledWindowMask | |
| 164 backing:NSBackingStoreBuffered | |
| 165 defer:NO]); | |
| 166 [window_ center]; | |
| 167 [window_ makeKeyAndOrderFront:nil]; | |
| 168 | |
| 169 // Create an OpenGL view. | |
| 170 scoped_nsobject<NSOpenGLPixelFormat> pixel_format(GetPixelFormat()); | |
| 171 gl_view_.reset([[NSOpenGLView alloc] initWithFrame:rect | |
| 172 pixelFormat:pixel_format]); | |
| 173 [[window_ contentView] addSubview:gl_view_]; | |
| 174 SetupGLViewPort(gl_view_, width_, height_); | |
| 175 | |
| 176 done->Signal(); | |
| 177 } | |
| 178 | |
| 179 void RenderingHelperMac::UnInitialize(base::WaitableEvent* done) { | |
| 180 CHECK_EQ(base::MessageLoop::current(), message_loop_); | |
| 181 width_ = 0; | |
| 182 height_ = 0; | |
| 183 message_loop_ = NULL; | |
| 184 [window_ close]; | |
| 185 window_.reset(); | |
| 186 gl_view_.reset(); | |
| 187 done->Signal(); | |
| 188 } | |
| 189 | |
| 190 void RenderingHelperMac::CreateTexture(int window_id, | |
| 191 uint32 texture_target, | |
| 192 GLuint* texture_id, | |
| 193 base::WaitableEvent* done) { | |
| 194 CHECK_EQ(base::MessageLoop::current(), message_loop_); | |
| 195 CHECK_EQ(static_cast<uint32>(GL_TEXTURE_RECTANGLE_ARB), texture_target); | |
| 196 CGLContextObj cgl_ctx = GetCGLContext(gl_view_); | |
| 197 glGenTextures(1, texture_id); | |
| 198 CHECK_EQ(GL_NO_ERROR, static_cast<int>(glGetError())); | |
| 199 done->Signal(); | |
| 200 } | |
| 201 | |
| 202 void RenderingHelperMac::RenderTexture(GLuint texture_id) { | |
| 203 CHECK_EQ(base::MessageLoop::current(), message_loop_); | |
| 204 DrawTexture(gl_view_, texture_id, suppress_swap_to_display_); | |
| 205 } | |
| 206 | |
| 207 void RenderingHelperMac::DeleteTexture(GLuint texture_id) { | |
| 208 CHECK_EQ(base::MessageLoop::current(), message_loop_); | |
| 209 CGLContextObj cgl_ctx = GetCGLContext(gl_view_); | |
| 210 glDeleteTextures(1, &texture_id); | |
| 211 CHECK_EQ(GL_NO_ERROR, static_cast<int>(glGetError())); | |
| 212 } | |
| 213 | |
| 214 void* RenderingHelperMac::GetGLContext() { | |
| 215 return GetCGLContext(gl_view_); | |
| 216 } | |
| 217 | |
| 218 void* RenderingHelperMac::GetGLDisplay() { | |
| 219 return NULL; | |
| 220 } | |
| 221 | |
| 222 } // namespace content | |
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Chromium Code Reviews
Issue 14401013:
Delete MacVDA from the codebase since it is dead code and not being worked on. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src