cc/surfaces/surface_display_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 "cc/surfaces/surface_display_output_surface.h"
   6
   7 #include "base/bind.h"
   8 #include "cc/output/compositor_frame.h"
   9 #include "cc/output/compositor_frame_ack.h"
  10 #include "cc/surfaces/display.h"
  11 #include "cc/surfaces/onscreen_display_client.h"
  12 #include "cc/surfaces/surface.h"
  13 #include "cc/surfaces/surface_manager.h"
  14
  15 namespace cc {
  16
  17 SurfaceDisplayOutputSurface::SurfaceDisplayOutputSurface(
  18     SurfaceManager* surface_manager,
  19     SurfaceIdAllocator* allocator,
  20     const scoped_refptr<ContextProvider>& context_provider)
  21     : OutputSurface(context_provider),
  22       display_client_(NULL),
  23       surface_manager_(surface_manager),
  24       factory_(surface_manager, this),
  25       allocator_(allocator) {
  26   capabilities_.delegated_rendering = true;
  27   capabilities_.max_frames_pending = 1;
  28   capabilities_.adjust_deadline_for_parent = true;
  29   capabilities_.can_force_reclaim_resources = true;
  30 }
  31
  32 SurfaceDisplayOutputSurface::~SurfaceDisplayOutputSurface() {
  33   client_ = NULL;
  34   if (!surface_id_.is_null()) {
  35     factory_.Destroy(surface_id_);
  36   }
  37 }
  38
  39 void SurfaceDisplayOutputSurface::ReceivedVSyncParameters(
  40     base::TimeTicks timebase,
  41     base::TimeDelta interval) {
  42   CommitVSyncParameters(timebase, interval);
  43 }
  44
  45 void SurfaceDisplayOutputSurface::SwapBuffers(CompositorFrame* frame) {
  46   gfx::Size frame_size =
  47       frame->delegated_frame_data->render_pass_list.back()->output_rect.size();
  48   if (frame_size.IsEmpty() || frame_size != display_size_) {
  49     if (!surface_id_.is_null()) {
  50       factory_.Destroy(surface_id_);
  51     }
  52     surface_id_ = allocator_->GenerateId();
  53     factory_.Create(surface_id_);
  54     display_size_ = frame_size;
  55   }
  56   display_client_->display()->SetSurfaceId(surface_id_,
  57                                            frame->metadata.device_scale_factor);
  58
  59   scoped_ptr<CompositorFrame> frame_copy(new CompositorFrame());
  60   frame->AssignTo(frame_copy.get());
  61   factory_.SubmitFrame(
  62       surface_id_, frame_copy.Pass(),
  63       base::Bind(&SurfaceDisplayOutputSurface::SwapBuffersComplete,
  64                  base::Unretained(this)));
  65
  66   client_->DidSwapBuffers();
  67 }
  68
  69 bool SurfaceDisplayOutputSurface::BindToClient(OutputSurfaceClient* client) {
  70   DCHECK(client);
  71   DCHECK(display_client_);
  72   client_ = client;
  73   // Avoid initializing GL context here, as this should be sharing the
  74   // Display's context.
  75   return display_client_->Initialize();
  76 }
  77
  78 void SurfaceDisplayOutputSurface::ForceReclaimResources() {
  79   if (!surface_id_.is_null()) {
  80     scoped_ptr<CompositorFrame> empty_frame(new CompositorFrame());
  81     empty_frame->delegated_frame_data.reset(new DelegatedFrameData);
  82     factory_.SubmitFrame(surface_id_, empty_frame.Pass(),
  83                          SurfaceFactory::DrawCallback());
  84   }
  85 }
  86
  87 void SurfaceDisplayOutputSurface::ReturnResources(
  88     const ReturnedResourceArray& resources) {
  89   CompositorFrameAck ack;
  90   ack.resources = resources;
  91   if (client_)
  92     client_->ReclaimResources(&ack);
  93 }
  94
  95 void SurfaceDisplayOutputSurface::SwapBuffersComplete(SurfaceDrawStatus drawn) {
  96   if (client_ && !display_client_->output_surface_lost())
  97     client_->DidSwapBuffersComplete();
  98 }
  99
 100 }  // namespace cc