components/mus/surfaces/surfaces_scheduler.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 "components/mus/surfaces/surfaces_scheduler.h"
   6
   7 #include "cc/debug/rendering_stats_instrumentation.h"
   8 #include "cc/scheduler/compositor_timing_history.h"
   9 #include "cc/surfaces/display.h"
  10
  11 namespace mus {
  12
  13 SurfacesScheduler::SurfacesScheduler()
  14     : rendering_stats_instrumentation_(
  15           cc::RenderingStatsInstrumentation::Create()) {
  16   cc::SchedulerSettings settings;
  17   scoped_ptr<cc::CompositorTimingHistory> compositor_timing_history(
  18       new cc::CompositorTimingHistory(cc::CompositorTimingHistory::NULL_UMA,
  19                                       rendering_stats_instrumentation_.get()));
  20   scheduler_ = cc::Scheduler::Create(
  21       this, settings, 0, base::MessageLoop::current()->task_runner().get(),
  22       nullptr, compositor_timing_history.Pass());
  23   scheduler_->SetCanStart();
  24   scheduler_->SetVisible(true);
  25   scheduler_->SetCanDraw(true);
  26   scheduler_->SetNeedsBeginMainFrame();
  27 }
  28
  29 SurfacesScheduler::~SurfacesScheduler() {}
  30
  31 void SurfacesScheduler::SetNeedsDraw() {
  32   // Don't tell the scheduler we need to draw if we have no active displays
  33   // which can happen if we haven't initialized displays yet or if all active
  34   // displays have lost their context.
  35   if (!displays_.empty())
  36     scheduler_->SetNeedsRedraw();
  37 }
  38
  39 void SurfacesScheduler::OnVSyncParametersUpdated(base::TimeTicks timebase,
  40                                                  base::TimeDelta interval) {
  41   scheduler_->CommitVSyncParameters(timebase, interval);
  42 }
  43
  44 void SurfacesScheduler::AddDisplay(cc::Display* display) {
  45   DCHECK(displays_.find(display) == displays_.end());
  46   displays_.insert(display);
  47
  48   // A draw might be necessary (e.g., this display might be getting added on
  49   // resumption from the app being in the background as happens on android).
  50   SetNeedsDraw();
  51 }
  52
  53 void SurfacesScheduler::RemoveDisplay(cc::Display* display) {
  54   auto it = displays_.find(display);
  55   DCHECK(it != displays_.end());
  56   displays_.erase(it);
  57 }
  58
  59 void SurfacesScheduler::WillBeginImplFrame(const cc::BeginFrameArgs& args) {}
  60
  61 void SurfacesScheduler::DidFinishImplFrame() {}
  62
  63 void SurfacesScheduler::ScheduledActionSendBeginMainFrame() {
  64   scheduler_->NotifyBeginMainFrameStarted();
  65   scheduler_->NotifyReadyToCommit();
  66 }
  67
  68 cc::DrawResult SurfacesScheduler::ScheduledActionDrawAndSwapIfPossible() {
  69   for (const auto& it : displays_) {
  70     it->DrawAndSwap();
  71   }
  72   return cc::DRAW_SUCCESS;
  73 }
  74
  75 cc::DrawResult SurfacesScheduler::ScheduledActionDrawAndSwapForced() {
  76   NOTREACHED() << "ScheduledActionDrawAndSwapIfPossible always succeeds.";
  77   return cc::DRAW_SUCCESS;
  78 }
  79
  80 void SurfacesScheduler::ScheduledActionAnimate() {}
  81
  82 void SurfacesScheduler::ScheduledActionCommit() {
  83   scheduler_->NotifyReadyToActivate();
  84 }
  85
  86 void SurfacesScheduler::ScheduledActionActivateSyncTree() {}
  87
  88 void SurfacesScheduler::ScheduledActionBeginOutputSurfaceCreation() {
  89   scheduler_->DidCreateAndInitializeOutputSurface();
  90 }
  91
  92 void SurfacesScheduler::ScheduledActionPrepareTiles() {}
  93
  94 void SurfacesScheduler::ScheduledActionInvalidateOutputSurface() {}
  95
  96 void SurfacesScheduler::SendBeginFramesToChildren(
  97     const cc::BeginFrameArgs& args) {}
  98
  99 void SurfacesScheduler::SendBeginMainFrameNotExpectedSoon() {}
 100
 101 }  // namespace mus