content/browser/compositor/software_browser_compositor_output_surface.cc

   1 // Copyright 2014 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/browser/compositor/software_browser_compositor_output_surface.h"
   6
   7 #include "base/memory/ref_counted.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/time/time.h"
  10 #include "cc/output/compositor_frame.h"
  11 #include "cc/output/output_surface_client.h"
  12 #include "cc/output/software_output_device.h"
  13 #include "content/browser/renderer_host/render_widget_host_impl.h"
  14 #include "ui/events/latency_info.h"
  15 #include "ui/gfx/vsync_provider.h"
  16
  17 namespace content {
  18
  19 SoftwareBrowserCompositorOutputSurface::SoftwareBrowserCompositorOutputSurface(
  20     scoped_ptr<cc::SoftwareOutputDevice> software_device,
  21     const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager)
  22     : BrowserCompositorOutputSurface(software_device.Pass(),
  23                                      vsync_manager),
  24       weak_factory_(this) {
  25 }
  26
  27 SoftwareBrowserCompositorOutputSurface::
  28     ~SoftwareBrowserCompositorOutputSurface() {
  29 }
  30
  31 void SoftwareBrowserCompositorOutputSurface::SwapBuffers(
  32     cc::CompositorFrame* frame) {
  33   for (size_t i = 0; i < frame->metadata.latency_info.size(); i++) {
  34     frame->metadata.latency_info[i].AddLatencyNumber(
  35         ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0, 0);
  36   }
  37   base::MessageLoop::current()->PostTask(
  38       FROM_HERE,
  39       base::Bind(
  40           &RenderWidgetHostImpl::CompositorFrameDrawn,
  41           frame->metadata.latency_info));
  42
  43   gfx::VSyncProvider* vsync_provider = software_device()->GetVSyncProvider();
  44   if (vsync_provider) {
  45     vsync_provider->GetVSyncParameters(base::Bind(
  46         &BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu,
  47         weak_factory_.GetWeakPtr()));
  48   }
  49   PostSwapBuffersComplete();
  50   client_->DidSwapBuffers();
  51 }
  52
  53 #if defined(OS_MACOSX)
  54 void SoftwareBrowserCompositorOutputSurface::OnSurfaceDisplayed() {
  55   // See GpuBrowserCompositorOutputSurface for when and how this is used.
  56   NOTREACHED() << "Not expected for software surfaces.";
  57 }
  58
  59 void SoftwareBrowserCompositorOutputSurface::OnSurfaceRecycled() {
  60 }
  61
  62 bool SoftwareBrowserCompositorOutputSurface::ShouldNotShowFramesAfterRecycle()
  63     const {
  64   return false;
  65 }
  66 #endif
  67
  68 }  // namespace content