VaapiVideoAccelerator: make Vaapi accelerator work with ozone

content/common/gpu/media/rendering_helper.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/media/rendering_helper.h"
 
 #include <algorithm>
 #include <numeric>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringize_macros.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/time/time.h"
 #include "ui/gl/gl_context.h"
 #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>
 #endif
 
 #if defined(USE_X11)
 #include "ui/gfx/x/x11_types.h"
+#include "ui/gl/gl_surface_glx.h"
+#define GL_VARIANT_GLX 1
+#else
+#include "ui/gl/gl_surface_egl.h"
+#define GL_VARIANT_EGL 1
 #endif
 
-#if !defined(OS_WIN) && defined(ARCH_CPU_X86_FAMILY)
-#define GL_VARIANT_GLX 1
-#else
-#define GL_VARIANT_EGL 1
+#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,
                          const char* source,
                          int size) {
   GLuint shader = glCreateShader(type);
   glShaderSource(shader, 1, &source, &size);
   glCompileShader(shader);
   int result = GL_FALSE;
   glGetShaderiv(shader, GL_COMPILE_STATUS, &result);
   if (!result) {
     char log[4096];
     glGetShaderInfoLog(shader, arraysize(log), NULL, log);
     LOG(FATAL) << log;
   }
   glAttachShader(program, shader);
   glDeleteShader(shader);
   CHECK_EQ(static_cast<int>(glGetError()), GL_NO_ERROR);
 }
 
 namespace content {
 
+#if defined(USE_OZONE)
+
+// Ozone Gbm Surfaces are always created to the size of the screen, so
+// it doesn't matter what size we are passing here, we will update it
+// once the surface is created.
+const int kTestWindowWidth = 1;
+const int kTestWindowHeight = 1;
+
+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  // defined(USE_OZONE)
+
 RenderingHelperParams::RenderingHelperParams()
     : rendering_fps(0), warm_up_iterations(0), render_as_thumbnails(false) {
 }
 
 RenderingHelperParams::~RenderingHelperParams() {}
 
 VideoFrameTexture::VideoFrameTexture(uint32 texture_target,
                                      uint32 texture_id,
                                      const base::Closure& no_longer_needed_cb)
     : texture_target_(texture_target),
@@ skipping 15 matching lines @@
 
 // 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() {
   window_ = gfx::kNullAcceleratedWidget;
   Clear();
 }
 
 RenderingHelper::~RenderingHelper() {
   CHECK_EQ(videos_.size(), 0U) << "Must call UnInitialize before dtor.";
   Clear();
@@ skipping 56 matching lines @@
                           screen_size_.height(),
                           0 /* border width */,
                           depth,
                           CopyFromParent /* class */,
                           CopyFromParent /* visual */,
                           (CWBackPixel | CWOverrideRedirect),
                           &window_attributes);
   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();
 #else
 #error unknown platform
 #endif
   CHECK(window_ != gfx::kNullAcceleratedWidget);
 
   gl_surface_ = gfx::GLSurface::CreateViewGLSurface(window_);
+  screen_size_ = gl_surface_->GetSize();
+
   gl_context_ = gfx::GLContext::CreateGLContext(
       NULL, gl_surface_.get(), gfx::PreferIntegratedGpu);
-  gl_context_->MakeCurrent(gl_surface_.get());
+  CHECK(gl_context_->MakeCurrent(gl_surface_.get()));
 
   CHECK_GT(params.window_sizes.size(), 0U);
   videos_.resize(params.window_sizes.size());
   LayoutRenderingAreas(params.window_sizes);
 
   if (render_as_thumbnails_) {
     CHECK_EQ(videos_.size(), 1U);
 
     GLint max_texture_size;
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
@@ skipping 105 matching lines @@
   if (tex_external != -1) {
     glUniform1i(tex_external, 1);
   }
   int pos_location = glGetAttribLocation(program_, "in_pos");
   glEnableVertexAttribArray(pos_location);
   glVertexAttribPointer(pos_location, 2, GL_FLOAT, GL_FALSE, 0, kVertices);
   int tc_location = glGetAttribLocation(program_, "in_tc");
   glEnableVertexAttribArray(tc_location);
   glVertexAttribPointer(tc_location, 2, GL_FLOAT, GL_FALSE, 0, kTextureCoords);
 
+  int warm_up_iterations = 0;
   if (frame_duration_ != base::TimeDelta())
-    WarmUpRendering(params.warm_up_iterations);
+    warm_up_iterations = params.warm_up_iterations;
+#if defined(USE_OZONE)
+  // On Ozone the VSyncProvider can't provide a vsync_internal until
+  // we render at least a frame, so we warm up with at least one
+  // frame.
+  warm_up_iterations = std::max(1, warm_up_iterations);
+#endif
+  if (warm_up_iterations > 0)
+    WarmUpRendering(warm_up_iterations);
 
   // It's safe to use Unretained here since |rendering_thread_| will be stopped
   // in VideoDecodeAcceleratorTest.TearDown(), while the |rendering_helper_| is
   // a member of that class. (See video_decode_accelerator_unittest.cc.)
   gl_surface_->GetVSyncProvider()->GetVSyncParameters(base::Bind(
       &RenderingHelper::UpdateVSyncParameters, base::Unretained(this), done));
 }
 
 // The rendering for the first few frames is slow (e.g., 100ms on Peach Pit).
 // This affects the numbers measured in the performance test. We try to render
@@ skipping 137 matching lines @@
   glBindTexture(texture_target, 0);
   CHECK_EQ(static_cast<int>(glGetError()), GL_NO_ERROR);
 }
 
 void RenderingHelper::DeleteTexture(uint32 texture_id) {
   CHECK_EQ(base::MessageLoop::current(), message_loop_);
   glDeleteTextures(1, &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();
 }
 
 void* RenderingHelper::GetGLDisplay() {
   return gl_surface_->GetDisplay();
 }
 
 void RenderingHelper::Clear() {
   videos_.clear();
   message_loop_ = NULL;
   gl_context_ = NULL;
   gl_surface_ = NULL;
 
   render_as_thumbnails_ = false;
   frame_count_ = 0;
   thumbnails_fbo_id_ = 0;
   thumbnails_texture_id_ = 0;
 
 #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_));
     CHECK(XDestroyWindow(gfx::GetXDisplay(), window_));
   }
 #endif
   window_ = gfx::kNullAcceleratedWidget;
 }
 
 void RenderingHelper::GetThumbnailsAsRGB(std::vector<unsigned char>* rgb,
@@ skipping 56 matching lines @@
   // to keep references to them until after SwapBuffers() call below.
   std::vector<scoped_refptr<VideoFrameTexture> > frames_to_be_returned;
   bool need_swap_buffer = false;
   if (render_as_thumbnails_) {
     // In render_as_thumbnails_ mode, we render the FBO content on the
     // screen instead of the decoded textures.
     GLSetViewPort(videos_[0].render_area);
     RenderTexture(GL_TEXTURE_2D, thumbnails_texture_id_);
     need_swap_buffer = true;
   } else {
+    GLSetViewPort(gfx::Rect(screen_size_));
+    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+    glClear(GL_COLOR_BUFFER_BIT);
     for (RenderedVideo& video : videos_) {
       if (video.pending_frames.empty())
         continue;
       need_swap_buffer = true;
       scoped_refptr<VideoFrameTexture> frame = video.pending_frames.front();
       GLSetViewPort(video.render_area);
       RenderTexture(frame->texture_target(), frame->texture_id());
 
       if (video.pending_frames.size() > 1 || video.is_flushing) {
         frames_to_be_returned.push_back(video.pending_frames.front());
@@ skipping 67 matching lines @@
 void RenderingHelper::UpdateVSyncParameters(base::WaitableEvent* done,
                                             const base::TimeTicks timebase,
                                             const base::TimeDelta interval) {
   vsync_timebase_ = timebase;
   vsync_interval_ = interval;
 
   if (done)
     done->Signal();
 }
 
-void RenderingHelper::DropOneFrameForAllVideos() {
+uint32 RenderingHelper::DropOneFrameForAllVideos() {
+  uint32 frames_dropped = 0;
   for (RenderedVideo& video : videos_) {
     if (video.pending_frames.empty())
       continue;
 
     if (video.pending_frames.size() > 1 || video.is_flushing) {
+      frames_dropped++;
       video.pending_frames.pop();
     } else {
       ++video.frames_to_drop;
     }
   }
+  return frames_dropped;
 }
 
 void RenderingHelper::ScheduleNextRenderContent() {
   scheduled_render_time_ += frame_duration_;
 
   // Schedules the next RenderContent() at latest VSYNC before the
   // |scheduled_render_time_|.
   base::TimeTicks now = base::TimeTicks::Now();
   base::TimeTicks target =
       std::max(now + vsync_interval_, scheduled_render_time_);
 
   int64 intervals = (target - vsync_timebase_) / vsync_interval_;
   target = vsync_timebase_ + intervals * vsync_interval_;
 
   // When the rendering falls behind, drops frames.
-  while (scheduled_render_time_ < target) {
-    scheduled_render_time_ += frame_duration_;
-    DropOneFrameForAllVideos();
+  if (frame_duration_ > base::TimeDelta()) {
+    while (scheduled_render_time_ < target) {
+      scheduled_render_time_ += frame_duration_;
+      DropOneFrameForAllVideos();
+    }
+  } else {
+    // If we don't have a frame_duration_, just drop as many frames as
+    // possible.
+    while (DropOneFrameForAllVideos() > 0)
+      ;
   }
-
   message_loop_->PostDelayedTask(
       FROM_HERE, render_task_.callback(), target - now);
 }
 }  // namespace content