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   base::TimeTicks swap_time = base::TimeTicks::Now();
  34   for (auto& latency : frame->metadata.latency_info) {
  35     latency.AddLatencyNumberWithTimestamp(
  36         ui::INPUT_EVENT_GPU_SWAP_BUFFER_COMPONENT, 0, 0, swap_time, 1);
  37     latency.AddLatencyNumberWithTimestamp(
  38         ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0, 0,
  39         swap_time, 1);
  40   }
  41   base::MessageLoop::current()->PostTask(
  42       FROM_HERE,
  43       base::Bind(
  44           &RenderWidgetHostImpl::CompositorFrameDrawn,
  45           frame->metadata.latency_info));
  46
  47   gfx::VSyncProvider* vsync_provider = software_device()->GetVSyncProvider();
  48   if (vsync_provider) {
  49     vsync_provider->GetVSyncParameters(base::Bind(
  50         &BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu,
  51         weak_factory_.GetWeakPtr()));
  52   }
  53   PostSwapBuffersComplete();
  54   client_->DidSwapBuffers();
  55 }
  56
  57 #if defined(OS_MACOSX)
  58 void SoftwareBrowserCompositorOutputSurface::OnSurfaceDisplayed() {
  59   // See GpuBrowserCompositorOutputSurface for when and how this is used.
  60   NOTREACHED() << "Not expected for software surfaces.";
  61 }
  62
  63 void SoftwareBrowserCompositorOutputSurface::OnSurfaceRecycled() {
  64 }
  65
  66 bool SoftwareBrowserCompositorOutputSurface::ShouldNotShowFramesAfterRecycle()
  67     const {
  68   return false;
  69 }
  70 #endif
  71
  72 }  // namespace content