cc: Use more explicit names for CHROMIUM_image based rasterizer implementations.

cc/resources/image_raster_worker_pool.cc

-// Copyright 2013 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/resources/image_raster_worker_pool.h"
-
-#include <algorithm>
-
-#include "base/debug/trace_event.h"
-#include "base/debug/trace_event_argument.h"
-#include "base/strings/stringprintf.h"
-#include "cc/debug/traced_value.h"
-#include "cc/resources/raster_buffer.h"
-#include "cc/resources/resource.h"
-#include "third_party/skia/include/utils/SkNullCanvas.h"
-
-namespace cc {
-namespace {
-
-class RasterBufferImpl : public RasterBuffer {
- public:
-  RasterBufferImpl(ResourceProvider* resource_provider,
-                   const Resource* resource)
-      : resource_provider_(resource_provider),
-        resource_(resource),
-        stride_(0),
-        buffer_(resource_provider->MapImage(resource->id(), &stride_)) {}
-
-  virtual ~RasterBufferImpl() {
-    resource_provider_->UnmapImage(resource_->id());
-
-    // This RasterBuffer implementation provides direct access to the memory
-    // used by the GPU. Read lock fences are required to ensure that we're not
-    // trying to map a resource that is currently in-use by the GPU.
-    resource_provider_->EnableReadLockFences(resource_->id());
-  }
-
-  // Overridden from RasterBuffer:
-  virtual skia::RefPtr<SkCanvas> AcquireSkCanvas() OVERRIDE {
-    if (!buffer_)
-      return skia::AdoptRef(SkCreateNullCanvas());
-
-    RasterWorkerPool::AcquireBitmapForBuffer(
-        &bitmap_, buffer_, resource_->format(), resource_->size(), stride_);
-    return skia::AdoptRef(new SkCanvas(bitmap_));
-  }
-  virtual void ReleaseSkCanvas(const skia::RefPtr<SkCanvas>& canvas) OVERRIDE {
-    if (!buffer_)
-      return;
-
-    RasterWorkerPool::ReleaseBitmapForBuffer(
-        &bitmap_, buffer_, resource_->format());
-  }
-
- private:
-  ResourceProvider* resource_provider_;
-  const Resource* resource_;
-  int stride_;
-  uint8_t* buffer_;
-  SkBitmap bitmap_;
-
-  DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
-};
-
-}  // namespace
-
-// static
-scoped_ptr<RasterWorkerPool> ImageRasterWorkerPool::Create(
-    base::SequencedTaskRunner* task_runner,
-    TaskGraphRunner* task_graph_runner,
-    ResourceProvider* resource_provider) {
-  return make_scoped_ptr<RasterWorkerPool>(new ImageRasterWorkerPool(
-      task_runner, task_graph_runner, resource_provider));
-}
-
-ImageRasterWorkerPool::ImageRasterWorkerPool(
-    base::SequencedTaskRunner* task_runner,
-    TaskGraphRunner* task_graph_runner,
-    ResourceProvider* resource_provider)
-    : task_runner_(task_runner),
-      task_graph_runner_(task_graph_runner),
-      namespace_token_(task_graph_runner->GetNamespaceToken()),
-      resource_provider_(resource_provider),
-      raster_finished_weak_ptr_factory_(this) {}
-
-ImageRasterWorkerPool::~ImageRasterWorkerPool() {}
-
-Rasterizer* ImageRasterWorkerPool::AsRasterizer() { return this; }
-
-void ImageRasterWorkerPool::SetClient(RasterizerClient* client) {
-  client_ = client;
-}
-
-void ImageRasterWorkerPool::Shutdown() {
-  TRACE_EVENT0("cc", "ImageRasterWorkerPool::Shutdown");
-
-  TaskGraph empty;
-  task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
-  task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
-}
-
-void ImageRasterWorkerPool::ScheduleTasks(RasterTaskQueue* queue) {
-  TRACE_EVENT0("cc", "ImageRasterWorkerPool::ScheduleTasks");
-
-  if (raster_pending_.none())
-    TRACE_EVENT_ASYNC_BEGIN0("cc", "ScheduledTasks", this);
-
-  // Mark all task sets as pending.
-  raster_pending_.set();
-
-  unsigned priority = kRasterTaskPriorityBase;
-
-  graph_.Reset();
-
-  // Cancel existing OnRasterFinished callbacks.
-  raster_finished_weak_ptr_factory_.InvalidateWeakPtrs();
-
-  scoped_refptr<RasterizerTask> new_raster_finished_tasks[kNumberOfTaskSets];
-
-  size_t task_count[kNumberOfTaskSets] = {0};
-
-  for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
-    new_raster_finished_tasks[task_set] = CreateRasterFinishedTask(
-        task_runner_.get(),
-        base::Bind(&ImageRasterWorkerPool::OnRasterFinished,
-                   raster_finished_weak_ptr_factory_.GetWeakPtr(),
-                   task_set));
-  }
-
-  for (RasterTaskQueue::Item::Vector::const_iterator it = queue->items.begin();
-       it != queue->items.end();
-       ++it) {
-    const RasterTaskQueue::Item& item = *it;
-    RasterTask* task = item.task;
-    DCHECK(!task->HasCompleted());
-
-    for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
-      if (!item.task_sets[task_set])
-        continue;
-
-      ++task_count[task_set];
-
-      graph_.edges.push_back(
-          TaskGraph::Edge(task, new_raster_finished_tasks[task_set].get()));
-    }
-
-    InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++);
-  }
-
-  for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
-    InsertNodeForTask(&graph_,
-                      new_raster_finished_tasks[task_set].get(),
-                      kRasterFinishedTaskPriority,
-                      task_count[task_set]);
-  }
-
-  ScheduleTasksOnOriginThread(this, &graph_);
-  task_graph_runner_->ScheduleTasks(namespace_token_, &graph_);
-
-  std::copy(new_raster_finished_tasks,
-            new_raster_finished_tasks + kNumberOfTaskSets,
-            raster_finished_tasks_);
-
-  TRACE_EVENT_ASYNC_STEP_INTO1(
-      "cc", "ScheduledTasks", this, "rasterizing", "state", StateAsValue());
-}
-
-void ImageRasterWorkerPool::CheckForCompletedTasks() {
-  TRACE_EVENT0("cc", "ImageRasterWorkerPool::CheckForCompletedTasks");
-
-  task_graph_runner_->CollectCompletedTasks(namespace_token_,
-                                            &completed_tasks_);
-  for (Task::Vector::const_iterator it = completed_tasks_.begin();
-       it != completed_tasks_.end();
-       ++it) {
-    RasterizerTask* task = static_cast<RasterizerTask*>(it->get());
-
-    task->WillComplete();
-    task->CompleteOnOriginThread(this);
-    task->DidComplete();
-
-    task->RunReplyOnOriginThread();
-  }
-  completed_tasks_.clear();
-}
-
-scoped_ptr<RasterBuffer> ImageRasterWorkerPool::AcquireBufferForRaster(
-    const Resource* resource) {
-  // RasterBuffer implementation depends on an image having been acquired for
-  // the resource.
-  resource_provider_->AcquireImage(resource->id());
-
-  return make_scoped_ptr<RasterBuffer>(
-      new RasterBufferImpl(resource_provider_, resource));
-}
-
-void ImageRasterWorkerPool::ReleaseBufferForRaster(
-    scoped_ptr<RasterBuffer> buffer) {
-  // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
-}
-
-void ImageRasterWorkerPool::OnRasterFinished(TaskSet task_set) {
-  TRACE_EVENT1(
-      "cc", "ImageRasterWorkerPool::OnRasterFinished", "task_set", task_set);
-
-  DCHECK(raster_pending_[task_set]);
-  raster_pending_[task_set] = false;
-  if (raster_pending_.any()) {
-    TRACE_EVENT_ASYNC_STEP_INTO1(
-        "cc", "ScheduledTasks", this, "rasterizing", "state", StateAsValue());
-  } else {
-    TRACE_EVENT_ASYNC_END0("cc", "ScheduledTasks", this);
-  }
-  client_->DidFinishRunningTasks(task_set);
-}
-
-scoped_refptr<base::debug::ConvertableToTraceFormat>
-ImageRasterWorkerPool::StateAsValue() const {
-  scoped_refptr<base::debug::TracedValue> state =
-      new base::debug::TracedValue();
-
-  state->BeginArray("tasks_pending");
-  for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set)
-    state->AppendBoolean(raster_pending_[task_set]);
-  state->EndArray();
-  return state;
-}
-
-}  // namespace cc