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// 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 "base/debug/trace_event.h"
#include "cc/resources/resource.h"
#include "third_party/skia/include/core/SkDevice.h"
namespace cc {
namespace {
class ImageWorkerPoolTaskImpl : public internal::WorkerPoolTask {
public:
typedef base::Callback<void(bool was_canceled)> Reply;
ImageWorkerPoolTaskImpl(internal::RasterWorkerPoolTask* task,
TaskVector* dependencies,
uint8_t* buffer,
int stride,
const Reply& reply)
: internal::WorkerPoolTask(dependencies),
task_(task),
buffer_(buffer),
stride_(stride),
reply_(reply) {
}
// Overridden from internal::WorkerPoolTask:
virtual void RunOnThread(unsigned thread_index) OVERRIDE {
DCHECK(buffer_);
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config,
task_->resource()->size().width(),
task_->resource()->size().height(),
stride_);
bitmap.setPixels(buffer_);
SkDevice device(bitmap);
task_->RunOnThread(&device, thread_index);
}
virtual void DispatchCompletionCallback() OVERRIDE {
reply_.Run(!HasFinishedRunning());
}
private:
virtual ~ImageWorkerPoolTaskImpl() {}
scoped_refptr<internal::RasterWorkerPoolTask> task_;
uint8_t* buffer_;
int stride_;
const Reply reply_;
DISALLOW_COPY_AND_ASSIGN(ImageWorkerPoolTaskImpl);
};
} // namespace
ImageRasterWorkerPool::ImageRasterWorkerPool(
ResourceProvider* resource_provider, size_t num_threads)
: RasterWorkerPool(resource_provider, num_threads) {
// TODO(reveman): Remove WorkerPool client interface.
WorkerPool::SetClient(this);
}
ImageRasterWorkerPool::~ImageRasterWorkerPool() {
DCHECK_EQ(0u, image_tasks_.size());
}
void ImageRasterWorkerPool::ScheduleTasks(RasterTask::Queue* queue) {
TRACE_EVENT0("cc", "ImageRasterWorkerPool::ScheduleTasks");
internal::WorkerPoolTask::TaskVector tasks;
RasterWorkerPool::SetRasterTasks(queue);
for (RasterTask::Queue::TaskVector::const_iterator it =
raster_tasks().begin();
it != raster_tasks().end(); ++it) {
internal::RasterWorkerPoolTask* task = *it;
TaskMap::iterator image_it = image_tasks_.find(task);
if (image_it != image_tasks_.end()) {
internal::WorkerPoolTask* image_task = image_it->second;
tasks.push_back(image_task);
continue;
}
// Acquire image for resource.
resource_provider()->AcquireImage(task->resource()->id());
// Map image for raster.
uint8* buffer = resource_provider()->MapImage(task->resource()->id());
int stride = resource_provider()->GetImageStride(task->resource()->id());
// TODO(reveman): Avoid having to make a copy of dependencies.
internal::WorkerPoolTask::TaskVector dependencies = task->dependencies();
scoped_refptr<internal::WorkerPoolTask> image_task(
new ImageWorkerPoolTaskImpl(
task,
&dependencies,
buffer,
stride,
base::Bind(&ImageRasterWorkerPool::OnRasterTaskCompleted,
base::Unretained(this),
make_scoped_refptr(task))));
image_tasks_[task] = image_task;
tasks.push_back(image_task);
}
if (tasks.empty()) {
ScheduleRasterTasks(RootTask());
return;
}
RootTask root(&tasks);
ScheduleRasterTasks(root);
}
void ImageRasterWorkerPool::OnRasterTaskCompleted(
scoped_refptr<internal::RasterWorkerPoolTask> task,
bool was_canceled) {
TRACE_EVENT1("cc", "ImageRasterWorkerPool::OnRasterTaskCompleted",
"was_canceled", was_canceled);
DCHECK(image_tasks_.find(task) != image_tasks_.end());
// Balanced with MapImage() call in ScheduleTasks().
resource_provider()->UnmapImage(task->resource()->id());
// Bind image to resource.
resource_provider()->BindImage(task->resource()->id());
if (!was_canceled)
task->DidRun();
DidCompleteRasterTask(task);
image_tasks_.erase(task);
}
void ImageRasterWorkerPool::DidCompleteRasterTask(
internal::RasterWorkerPoolTask* task) {
task->DidComplete();
task->DispatchCompletionCallback();
}
} // namespace cc
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