cc/surfaces/onscreen_display_client.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 "cc/surfaces/onscreen_display_client.h"
   6
   7 #include "base/trace_event/trace_event.h"
   8 #include "cc/output/output_surface.h"
   9 #include "cc/scheduler/begin_frame_source.h"
  10 #include "cc/surfaces/display_scheduler.h"
  11 #include "cc/surfaces/surface_display_output_surface.h"
  12 #include "cc/surfaces/surface_factory.h"
  13 #include "cc/surfaces/surface_manager.h"
  14
  15 namespace cc {
  16
  17 OnscreenDisplayClient::OnscreenDisplayClient(
  18     scoped_ptr<OutputSurface> output_surface,
  19     SurfaceManager* manager,
  20     SharedBitmapManager* bitmap_manager,
  21     gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
  22     const RendererSettings& settings,
  23     scoped_refptr<base::SingleThreadTaskRunner> task_runner)
  24     : output_surface_(output_surface.Pass()),
  25       display_(new Display(this,
  26                            manager,
  27                            bitmap_manager,
  28                            gpu_memory_buffer_manager,
  29                            settings)),
  30       task_runner_(task_runner),
  31       output_surface_lost_(false),
  32       disable_display_vsync_(settings.disable_display_vsync) {
  33 }
  34
  35 OnscreenDisplayClient::~OnscreenDisplayClient() {
  36 }
  37
  38 bool OnscreenDisplayClient::Initialize() {
  39   int max_frames_pending =
  40       output_surface_ ? output_surface_->capabilities().max_frames_pending : 0;
  41   if (max_frames_pending <= 0)
  42     max_frames_pending = OutputSurface::DEFAULT_MAX_FRAMES_PENDING;
  43
  44   BeginFrameSource* frame_source;
  45   if (disable_display_vsync_) {
  46     unthrottled_frame_source_ =
  47         BackToBackBeginFrameSource::Create(task_runner_.get());
  48     frame_source = unthrottled_frame_source_.get();
  49   } else {
  50     synthetic_frame_source_ = SyntheticBeginFrameSource::Create(
  51         task_runner_.get(), BeginFrameArgs::DefaultInterval());
  52     frame_source = synthetic_frame_source_.get();
  53   }
  54
  55   scheduler_.reset(new DisplayScheduler(
  56       display_.get(), frame_source, task_runner_.get(), max_frames_pending));
  57
  58   return display_->Initialize(output_surface_.Pass(), scheduler_.get());
  59 }
  60
  61 void OnscreenDisplayClient::CommitVSyncParameters(base::TimeTicks timebase,
  62                                                   base::TimeDelta interval) {
  63   if (interval == base::TimeDelta()) {
  64     // TODO(brianderson): We should not be receiving 0 intervals.
  65     interval = BeginFrameArgs::DefaultInterval();
  66   }
  67
  68   surface_display_output_surface_->ReceivedVSyncParameters(timebase, interval);
  69   if (synthetic_frame_source_.get())
  70     synthetic_frame_source_->OnUpdateVSyncParameters(timebase, interval);
  71 }
  72
  73 void OnscreenDisplayClient::OutputSurfaceLost() {
  74   output_surface_lost_ = true;
  75   surface_display_output_surface_->DidLoseOutputSurface();
  76 }
  77
  78 void OnscreenDisplayClient::SetMemoryPolicy(const ManagedMemoryPolicy& policy) {
  79   surface_display_output_surface_->SetMemoryPolicy(policy);
  80 }
  81
  82 }  // namespace cc