content/renderer/child_frame_compositing_helper.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/renderer/child_frame_compositing_helper.h"
   6
   7 #include "cc/blink/web_layer_impl.h"
   8 #include "cc/layers/delegated_frame_provider.h"
   9 #include "cc/layers/delegated_frame_resource_collection.h"
  10 #include "cc/layers/delegated_renderer_layer.h"
  11 #include "cc/layers/solid_color_layer.h"
  12 #include "cc/layers/surface_layer.h"
  13 #include "cc/output/context_provider.h"
  14 #include "cc/output/copy_output_request.h"
  15 #include "cc/output/copy_output_result.h"
  16 #include "cc/resources/single_release_callback.h"
  17 #include "content/common/browser_plugin/browser_plugin_messages.h"
  18 #include "content/common/frame_messages.h"
  19 #include "content/common/gpu/client/context_provider_command_buffer.h"
  20 #include "content/renderer/browser_plugin/browser_plugin.h"
  21 #include "content/renderer/browser_plugin/browser_plugin_manager.h"
  22 #include "content/renderer/render_frame_impl.h"
  23 #include "content/renderer/render_frame_proxy.h"
  24 #include "content/renderer/render_thread_impl.h"
  25 #include "skia/ext/image_operations.h"
  26 #include "third_party/WebKit/public/web/WebFrame.h"
  27 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  28 #include "third_party/khronos/GLES2/gl2.h"
  29 #include "ui/gfx/geometry/size_conversions.h"
  30 #include "ui/gfx/skia_util.h"
  31
  32 namespace content {
  33
  34 ChildFrameCompositingHelper*
  35 ChildFrameCompositingHelper::CreateForBrowserPlugin(
  36     const base::WeakPtr<BrowserPlugin>& browser_plugin) {
  37   return new ChildFrameCompositingHelper(
  38       browser_plugin, nullptr, nullptr,
  39       browser_plugin->render_frame_routing_id());
  40 }
  41
  42 ChildFrameCompositingHelper*
  43 ChildFrameCompositingHelper::CreateForRenderFrameProxy(
  44     RenderFrameProxy* render_frame_proxy) {
  45   return new ChildFrameCompositingHelper(base::WeakPtr<BrowserPlugin>(),
  46                                          render_frame_proxy->web_frame(),
  47                                          render_frame_proxy,
  48                                          render_frame_proxy->routing_id());
  49 }
  50
  51 ChildFrameCompositingHelper::ChildFrameCompositingHelper(
  52     const base::WeakPtr<BrowserPlugin>& browser_plugin,
  53     blink::WebFrame* frame,
  54     RenderFrameProxy* render_frame_proxy,
  55     int host_routing_id)
  56     : host_routing_id_(host_routing_id),
  57       last_route_id_(0),
  58       last_output_surface_id_(0),
  59       last_host_id_(0),
  60       ack_pending_(true),
  61       opaque_(true),
  62       browser_plugin_(browser_plugin),
  63       render_frame_proxy_(render_frame_proxy),
  64       frame_(frame),
  65       weak_factory_(this) {
  66 }
  67
  68 ChildFrameCompositingHelper::~ChildFrameCompositingHelper() {
  69   if (resource_collection_.get())
  70     resource_collection_->SetClient(nullptr);
  71 }
  72
  73 BrowserPluginManager* ChildFrameCompositingHelper::GetBrowserPluginManager() {
  74   if (!browser_plugin_)
  75     return nullptr;
  76
  77   return BrowserPluginManager::Get();
  78 }
  79
  80 blink::WebPluginContainer* ChildFrameCompositingHelper::GetContainer() {
  81   if (!browser_plugin_)
  82     return nullptr;
  83
  84   return browser_plugin_->container();
  85 }
  86
  87 int ChildFrameCompositingHelper::GetInstanceID() {
  88   if (!browser_plugin_)
  89     return 0;
  90
  91   return browser_plugin_->browser_plugin_instance_id();
  92 }
  93
  94 void ChildFrameCompositingHelper::SendCompositorFrameSwappedACKToBrowser(
  95     FrameHostMsg_CompositorFrameSwappedACK_Params& params) {
  96   // This function will be removed when BrowserPluginManager is removed and
  97   // BrowserPlugin is modified to use a RenderFrame.
  98   if (GetBrowserPluginManager()) {
  99     GetBrowserPluginManager()->Send(
 100         new BrowserPluginHostMsg_CompositorFrameSwappedACK(
 101             GetInstanceID(), params));
 102   } else if (render_frame_proxy_) {
 103     render_frame_proxy_->Send(
 104         new FrameHostMsg_CompositorFrameSwappedACK(host_routing_id_, params));
 105   }
 106 }
 107
 108 void ChildFrameCompositingHelper::SendReclaimCompositorResourcesToBrowser(
 109     FrameHostMsg_ReclaimCompositorResources_Params& params) {
 110   // This function will be removed when BrowserPluginManager is removed and
 111   // BrowserPlugin is modified to use a RenderFrame.
 112   if (GetBrowserPluginManager()) {
 113     GetBrowserPluginManager()->Send(
 114         new BrowserPluginHostMsg_ReclaimCompositorResources(
 115             GetInstanceID(), params));
 116   } else if (render_frame_proxy_) {
 117     render_frame_proxy_->Send(
 118         new FrameHostMsg_ReclaimCompositorResources(host_routing_id_, params));
 119   }
 120 }
 121
 122 void ChildFrameCompositingHelper::DidCommitCompositorFrame() {
 123   if (!resource_collection_.get() || !ack_pending_)
 124     return;
 125
 126   FrameHostMsg_CompositorFrameSwappedACK_Params params;
 127   params.producing_host_id = last_host_id_;
 128   params.producing_route_id = last_route_id_;
 129   params.output_surface_id = last_output_surface_id_;
 130   resource_collection_->TakeUnusedResourcesForChildCompositor(
 131       &params.ack.resources);
 132
 133   SendCompositorFrameSwappedACKToBrowser(params);
 134
 135   ack_pending_ = false;
 136 }
 137
 138 void ChildFrameCompositingHelper::EnableCompositing(bool enable) {
 139   if (enable && !background_layer_.get()) {
 140     background_layer_ =
 141         cc::SolidColorLayer::Create(cc_blink::WebLayerImpl::LayerSettings());
 142     background_layer_->SetMasksToBounds(true);
 143     background_layer_->SetBackgroundColor(
 144         SkColorSetARGBInline(255, 255, 255, 255));
 145     web_layer_.reset(new cc_blink::WebLayerImpl(background_layer_));
 146   }
 147
 148   if (GetContainer()) {
 149     GetContainer()->setWebLayer(enable ? web_layer_.get() : nullptr);
 150   } else if (frame_) {
 151     frame_->setRemoteWebLayer(enable ? web_layer_.get() : nullptr);
 152   }
 153 }
 154
 155 void ChildFrameCompositingHelper::CheckSizeAndAdjustLayerProperties(
 156     const gfx::Size& new_size,
 157     float device_scale_factor,
 158     cc::Layer* layer) {
 159   if (buffer_size_ != new_size) {
 160     buffer_size_ = new_size;
 161     // The container size is in DIP, so is the layer size.
 162     // Buffer size is in physical pixels, so we need to adjust
 163     // it by the device scale factor.
 164     gfx::Size device_scale_adjusted_size = gfx::ToFlooredSize(
 165         gfx::ScaleSize(buffer_size_, 1.0f / device_scale_factor));
 166     layer->SetBounds(device_scale_adjusted_size);
 167   }
 168
 169   // Manually manage background layer for transparent webview.
 170   if (!opaque_)
 171     background_layer_->SetIsDrawable(false);
 172 }
 173
 174 void ChildFrameCompositingHelper::OnContainerDestroy() {
 175   // If we have a pending ACK, then ACK now so we don't lose frames in the
 176   // future.
 177   DidCommitCompositorFrame();
 178
 179   if (GetContainer())
 180     GetContainer()->setWebLayer(nullptr);
 181
 182   if (resource_collection_.get())
 183     resource_collection_->SetClient(nullptr);
 184
 185   ack_pending_ = false;
 186   resource_collection_ = nullptr;
 187   frame_provider_ = nullptr;
 188   delegated_layer_ = nullptr;
 189   background_layer_ = nullptr;
 190   surface_layer_ = nullptr;
 191   web_layer_.reset();
 192 }
 193
 194 void ChildFrameCompositingHelper::ChildFrameGone() {
 195   background_layer_->SetBackgroundColor(SkColorSetARGBInline(255, 0, 128, 0));
 196   background_layer_->RemoveAllChildren();
 197   background_layer_->SetIsDrawable(true);
 198   background_layer_->SetContentsOpaque(true);
 199 }
 200
 201 void ChildFrameCompositingHelper::OnCompositorFrameSwapped(
 202     scoped_ptr<cc::CompositorFrame> frame,
 203     int route_id,
 204     uint32 output_surface_id,
 205     int host_id,
 206     base::SharedMemoryHandle handle) {
 207   cc::DelegatedFrameData* frame_data = frame->delegated_frame_data.get();
 208
 209   // Surface IDs and compositor frames should never be received
 210   // interchangeably.
 211   DCHECK(!surface_layer_.get());
 212
 213   // Do nothing if we are getting destroyed or have no frame data.
 214   if (!frame_data || !background_layer_.get())
 215     return;
 216
 217   DCHECK(!frame_data->render_pass_list.empty());
 218   cc::RenderPass* root_pass = frame_data->render_pass_list.back();
 219   gfx::Size frame_size = root_pass->output_rect.size();
 220
 221   if (last_route_id_ != route_id ||
 222       last_output_surface_id_ != output_surface_id ||
 223       last_host_id_ != host_id) {
 224     // Resource ids are scoped by the output surface.
 225     // If the originating output surface doesn't match the last one, it
 226     // indicates the guest's output surface may have been recreated, in which
 227     // case we should recreate the DelegatedRendererLayer, to avoid matching
 228     // resources from the old one with resources from the new one which would
 229     // have the same id.
 230     frame_provider_ = nullptr;
 231
 232     // Drop the cc::DelegatedFrameResourceCollection so that we will not return
 233     // any resources from the old output surface with the new output surface id.
 234     if (resource_collection_.get()) {
 235       resource_collection_->SetClient(nullptr);
 236
 237       if (resource_collection_->LoseAllResources())
 238         SendReturnedDelegatedResources();
 239       resource_collection_ = nullptr;
 240     }
 241     last_output_surface_id_ = output_surface_id;
 242     last_route_id_ = route_id;
 243     last_host_id_ = host_id;
 244   }
 245   if (!resource_collection_.get()) {
 246     resource_collection_ = new cc::DelegatedFrameResourceCollection;
 247     resource_collection_->SetClient(this);
 248   }
 249   if (!frame_provider_.get() || frame_provider_->frame_size() != frame_size) {
 250     frame_provider_ = new cc::DelegatedFrameProvider(
 251         resource_collection_.get(), frame->delegated_frame_data.Pass());
 252     if (delegated_layer_.get())
 253       delegated_layer_->RemoveFromParent();
 254     delegated_layer_ = cc::DelegatedRendererLayer::Create(
 255         cc_blink::WebLayerImpl::LayerSettings(), frame_provider_.get());
 256     delegated_layer_->SetIsDrawable(true);
 257     buffer_size_ = gfx::Size();
 258     SetContentsOpaque(opaque_);
 259     background_layer_->AddChild(delegated_layer_);
 260   } else {
 261     frame_provider_->SetFrameData(frame->delegated_frame_data.Pass());
 262   }
 263
 264   CheckSizeAndAdjustLayerProperties(
 265       frame_data->render_pass_list.back()->output_rect.size(),
 266       frame->metadata.device_scale_factor,
 267       delegated_layer_.get());
 268
 269   ack_pending_ = true;
 270 }
 271
 272 // static
 273 void ChildFrameCompositingHelper::SatisfyCallback(
 274     base::WeakPtr<ChildFrameCompositingHelper> helper,
 275     cc::SurfaceSequence sequence) {
 276   if (helper && helper->render_frame_proxy_) {
 277     helper->render_frame_proxy_->Send(
 278         new FrameHostMsg_SatisfySequence(helper->host_routing_id_, sequence));
 279   }
 280 }
 281
 282 // static
 283 void ChildFrameCompositingHelper::RequireCallback(
 284     base::WeakPtr<ChildFrameCompositingHelper> helper,
 285     cc::SurfaceId id,
 286     cc::SurfaceSequence sequence) {
 287   if (helper && helper->render_frame_proxy_) {
 288     helper->render_frame_proxy_->Send(new FrameHostMsg_RequireSequence(
 289         helper->host_routing_id_, id, sequence));
 290   }
 291 }
 292
 293 void ChildFrameCompositingHelper::OnSetSurface(
 294     const cc::SurfaceId& surface_id,
 295     const gfx::Size& frame_size,
 296     float scale_factor,
 297     const cc::SurfaceSequence& sequence) {
 298   // Surface IDs and compositor frames should never be received
 299   // interchangably.
 300   DCHECK(!delegated_layer_.get());
 301
 302   // Do nothing if we are getting destroyed.
 303   if (!background_layer_.get())
 304     return;
 305
 306   if (!surface_layer_.get()) {
 307     cc::SurfaceLayer::SatisfyCallback satisfy_callback =
 308         base::Bind(&ChildFrameCompositingHelper::SatisfyCallback, GetWeakPtr());
 309     cc::SurfaceLayer::RequireCallback require_callback =
 310         base::Bind(&ChildFrameCompositingHelper::RequireCallback, GetWeakPtr());
 311     surface_layer_ =
 312         cc::SurfaceLayer::Create(cc_blink::WebLayerImpl::LayerSettings(),
 313                                  satisfy_callback, require_callback);
 314   }
 315   surface_layer_->SetSurfaceId(surface_id, scale_factor, frame_size);
 316   UpdateVisibility(true);
 317   SetContentsOpaque(opaque_);
 318   background_layer_->AddChild(surface_layer_);
 319
 320   // The RWHV creates a destruction dependency on the surface that needs to be
 321   // satisfied.
 322   render_frame_proxy_->Send(
 323       new FrameHostMsg_SatisfySequence(host_routing_id_, sequence));
 324
 325   CheckSizeAndAdjustLayerProperties(frame_size, scale_factor,
 326                                     surface_layer_.get());
 327 }
 328
 329 void ChildFrameCompositingHelper::UpdateVisibility(bool visible) {
 330   if (delegated_layer_.get())
 331     delegated_layer_->SetIsDrawable(visible);
 332   if (surface_layer_.get())
 333     surface_layer_->SetIsDrawable(visible);
 334 }
 335
 336 void ChildFrameCompositingHelper::UnusedResourcesAreAvailable() {
 337   if (ack_pending_)
 338     return;
 339
 340   SendReturnedDelegatedResources();
 341 }
 342
 343 void ChildFrameCompositingHelper::SendReturnedDelegatedResources() {
 344   FrameHostMsg_ReclaimCompositorResources_Params params;
 345   if (resource_collection_.get())
 346     resource_collection_->TakeUnusedResourcesForChildCompositor(
 347         &params.ack.resources);
 348   DCHECK(!params.ack.resources.empty());
 349
 350   params.route_id = last_route_id_;
 351   params.output_surface_id = last_output_surface_id_;
 352   params.renderer_host_id = last_host_id_;
 353   SendReclaimCompositorResourcesToBrowser(params);
 354 }
 355
 356 void ChildFrameCompositingHelper::SetContentsOpaque(bool opaque) {
 357   opaque_ = opaque;
 358   if (delegated_layer_.get())
 359     delegated_layer_->SetContentsOpaque(opaque_);
 360   if (surface_layer_.get())
 361     surface_layer_->SetContentsOpaque(opaque_);
 362 }
 363
 364 }  // namespace content