VaapiVideoAccelerator: make Vaapi accelerator work with ozone

content/common/gpu/media/rendering_helper.cc

Index: content/common/gpu/media/rendering_helper.cc
diff --git a/content/common/gpu/media/rendering_helper.cc b/content/common/gpu/media/rendering_helper.cc
index 00e85f9f0ecd0c44b1961175d1fc5ce248670712..78caa22c140f49c9ded2116d7a1efb804f8306ef 100644
--- a/content/common/gpu/media/rendering_helper.cc
+++ b/content/common/gpu/media/rendering_helper.cc
@@ -19,7 +19,6 @@
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gl_surface_egl.h"
-#include "ui/gl/gl_surface_glx.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
@@ -27,14 +26,19 @@
 
 #if defined(USE_X11)
 #include "ui/gfx/x/x11_types.h"
-#endif
-
-#if !defined(OS_WIN) && defined(ARCH_CPU_X86_FAMILY)
+#include "ui/gl/gl_surface_glx.h"
 #define GL_VARIANT_GLX 1
 #else
 #define GL_VARIANT_EGL 1
 #endif
 
+#if defined(USE_OZONE)
+#include "ui/ozone/public/ozone_platform.h"
+#include "ui/ozone/public/ui_thread_gpu.h"
+#include "ui/platform_window/platform_window.h"
+#include "ui/platform_window/platform_window_delegate.h"
+#endif
+
 // Helper for Shader creation.
 static void CreateShader(GLuint program,
                          GLenum type,
@@ -57,6 +61,53 @@ static void CreateShader(GLuint program,
 
 namespace content {
 
+#if defined(USE_OZONE)
+
+const int kTestWindowWidth = 800;
+const int kTestWindowHeight = 600;
+
+class RenderingHelper::StubOzoneDelegate : public ui::PlatformWindowDelegate {
+ public:
+  StubOzoneDelegate() : widget_(gfx::kNullAcceleratedWidget) {
+    platform_window_ =
+      ui::OzonePlatform::GetInstance()->CreatePlatformWindow(
+          this, gfx::Rect(kTestWindowWidth, kTestWindowHeight));
+  }
+  virtual ~StubOzoneDelegate() {}
+
+  virtual void OnBoundsChanged(const gfx::Rect& new_bounds) OVERRIDE {}
+
+  virtual void OnDamageRect(const gfx::Rect& damaged_region) OVERRIDE {}
+
+  virtual void DispatchEvent(ui::Event* event) OVERRIDE {}
+
+  virtual void OnCloseRequest() OVERRIDE {}
+  virtual void OnClosed() OVERRIDE {}
+
+  virtual void OnWindowStateChanged(
+      ui::PlatformWindowState new_state) OVERRIDE {};
+
+  virtual void OnLostCapture() OVERRIDE {};
+
+  virtual void OnAcceleratedWidgetAvailable(
+      gfx::AcceleratedWidget widget) OVERRIDE {
+    widget_ = widget;
+  };
+
+  virtual void OnActivationChanged(bool active) OVERRIDE {};
+
+  gfx::AcceleratedWidget GetAcceleratedWidget() const { return widget_; }
+
+  gfx::Size GetSize() { return platform_window_->GetBounds().size(); }
+
+ private:
+  scoped_ptr<ui::PlatformWindow> platform_window_;
+  gfx::AcceleratedWidget widget_;
+};
+
+#endif
+
+
 RenderingHelperParams::RenderingHelperParams() {}
 
 RenderingHelperParams::~RenderingHelperParams() {}
@@ -84,13 +135,21 @@ RenderingHelper::RenderedVideo::~RenderedVideo() {
 // static
 bool RenderingHelper::InitializeOneOff() {
   base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
+
 #if GL_VARIANT_GLX
   cmd_line->AppendSwitchASCII(switches::kUseGL,
                               gfx::kGLImplementationDesktopName);
 #else
   cmd_line->AppendSwitchASCII(switches::kUseGL, gfx::kGLImplementationEGLName);
 #endif
+
+#if defined(USE_OZONE)
+  static ui::UiThreadGpu ui_thread_gpu;
+  ui::OzonePlatform::InitializeForUI();
+  return gfx::GLSurface::InitializeOneOff() && ui_thread_gpu.Initialize();
+#else
   return gfx::GLSurface::InitializeOneOff();
+#endif
 }
 
 RenderingHelper::RenderingHelper() {
@@ -164,6 +223,11 @@ void RenderingHelper::Initialize(const RenderingHelperParams& params,
   XStoreName(display, window_, "VideoDecodeAcceleratorTest");
   XSelectInput(display, window_, ExposureMask);
   XMapWindow(display, window_);
+#elif defined(USE_OZONE)
+  platform_window_delegate_.reset(new RenderingHelper::StubOzoneDelegate());
+  window_ = platform_window_delegate_->GetAcceleratedWidget();
+
+  screen_size_ = platform_window_delegate_->GetSize();
 #else
 #error unknown platform
 #endif
@@ -430,7 +494,11 @@ void RenderingHelper::DeleteTexture(uint32 texture_id) {
   CHECK_EQ(static_cast<int>(glGetError()), GL_NO_ERROR);
 }
 
-void* RenderingHelper::GetGLContext() {
+scoped_refptr<gfx::GLContext> RenderingHelper::GetGLContext() {
+  return gl_context_;
+}
+
+void* RenderingHelper::GetGLContextHandle() {
   return gl_context_->GetHandle();
 }
 
@@ -452,7 +520,7 @@ void RenderingHelper::Clear() {
 #if defined(OS_WIN)
   if (window_)
     DestroyWindow(window_);
-#else
+#elif defined(USE_X11)
   // Destroy resources acquired in Initialize, in reverse-acquisition order.
   if (window_) {
     CHECK(XUnmapWindow(gfx::GetXDisplay(), window_));
@@ -515,8 +583,14 @@ void RenderingHelper::RenderContent() {
     // In render_as_thumbnails_ mode, we render the FBO content on the
     // screen instead of the decoded textures.
     GLSetViewPort(videos_[0].render_area);
+    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+    glClear(GL_COLOR_BUFFER_BIT);
     RenderTexture(GL_TEXTURE_2D, thumbnails_texture_id_);
   } else {
+    GLSetViewPort(gfx::Rect(screen_size_));
+    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+    glClear(GL_COLOR_BUFFER_BIT);
+
     for (size_t i = 0; i < videos_.size(); ++i) {
       RenderedVideo* video = &videos_[i];
       if (video->pending_frames.empty())