Gpu Image Decode Controller

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1220 matching lines @@
          settings_.max_memory_for_prepaint_percentage) /
         100;
   }
   global_tile_state_.memory_limit_policy =
       ManagedMemoryPolicy::PriorityCutoffToTileMemoryLimitPolicy(
           visible_ ?
           policy.priority_cutoff_when_visible :
           gpu::MemoryAllocation::CUTOFF_ALLOW_NOTHING);
   global_tile_state_.num_resources_limit = policy.num_resources_limit;
 
-  if (output_surface_ && global_tile_state_.hard_memory_limit_in_bytes > 0) {
+  if (global_tile_state_.hard_memory_limit_in_bytes > 0) {
     // If |global_tile_state_.hard_memory_limit_in_bytes| is greater than 0, we
-    // allow the worker context to retain allocated resources. Notify the worker
-    // context. If the memory policy has become zero, we'll handle the
-    // notification in NotifyAllTileTasksCompleted, after in-progress work
-    // finishes.
-    output_surface_->SetWorkerContextShouldAggressivelyFreeResources(
-        false /* aggressively_free_resources */);
+    // allow the worker context and image decode controller to retain allocated
+    // resources. Notify them here. If the memory policy has become zero, we'll
+    // handle the notification in NotifyAllTileTasksCompleted, after
+    // in-progress work finishes.
+    if (output_surface_) {
+      output_surface_->SetWorkerContextShouldAggressivelyFreeResources(
+          false /* aggressively_free_resources */);
+    }
+
+    if (image_decode_controller_) {
+      image_decode_controller_->SetShouldAggressivelyFreeResources(
+          false /* aggressively_free_resources */);
+    }
   }
 
   DCHECK(resource_pool_);
   resource_pool_->CheckBusyResources();
   // Soft limit is used for resource pool such that memory returns to soft
   // limit after going over.
   resource_pool_->SetResourceUsageLimits(
       global_tile_state_.soft_memory_limit_in_bytes,
       global_tile_state_.num_resources_limit);
 
@@ skipping 50 matching lines @@
   // don't need to schedule a draw here. Just stop WillBeginImplFrame() from
   // causing optimistic requests to draw a frame.
   is_likely_to_require_a_draw_ = false;
 
   client_->NotifyReadyToDraw();
 }
 
 void LayerTreeHostImpl::NotifyAllTileTasksCompleted() {
   // The tile tasks started by the most recent call to PrepareTiles have
   // completed. Now is a good time to free resources if necessary.
-  if (output_surface_ && global_tile_state_.hard_memory_limit_in_bytes == 0) {
-    output_surface_->SetWorkerContextShouldAggressivelyFreeResources(
-        true /* aggressively_free_resources */);
+  if (global_tile_state_.hard_memory_limit_in_bytes == 0) {
+    if (output_surface_) {
+      output_surface_->SetWorkerContextShouldAggressivelyFreeResources(
+          true /* aggressively_free_resources */);
+    }
+    if (image_decode_controller_) {
+      image_decode_controller_->SetShouldAggressivelyFreeResources(
+          true /* aggressively_free_resources */);
+    }
   }
 }
 
 void LayerTreeHostImpl::NotifyTileStateChanged(const Tile* tile) {
   TRACE_EVENT0("cc", "LayerTreeHostImpl::NotifyTileStateChanged");
 
   if (active_tree_) {
     LayerImpl* layer_impl =
         active_tree_->FindActiveTreeLayerById(tile->layer_id());
     if (layer_impl)
@@ skipping 798 matching lines @@
   active_tree_->set_needs_update_draw_properties();
   if (pending_tree_)
     pending_tree_->set_needs_update_draw_properties();
   client_->UpdateRendererCapabilitiesOnImplThread();
 }
 
 void LayerTreeHostImpl::CreateTileManagerResources() {
   CreateResourceAndTileTaskWorkerPool(&tile_task_worker_pool_, &resource_pool_);
 
   if (use_gpu_rasterization_) {
-    image_decode_controller_ = make_scoped_ptr(new GpuImageDecodeController);
+    image_decode_controller_ = make_scoped_ptr(new GpuImageDecodeController(
+        output_surface_->worker_context_provider(),
+        settings_.renderer_settings.preferred_tile_format));
   } else {
     image_decode_controller_ =
         make_scoped_ptr(new SoftwareImageDecodeController(
             settings_.renderer_settings.preferred_tile_format));
   }
 
   // TODO(vmpstr): Initialize tile task limit at ctor time.
   tile_manager_->SetResources(
       resource_pool_.get(), tile_task_worker_pool_->AsTileTaskRunner(),
       image_decode_controller_.get(),
@@ skipping 1788 matching lines @@
   return task_runner_provider_->HasImplThread();
 }
 
 bool LayerTreeHostImpl::CommitToActiveTree() const {
   // In single threaded mode we skip the pending tree and commit directly to the
   // active tree.
   return !task_runner_provider_->HasImplThread();
 }
 
 }  // namespace cc