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// Copyright (c) 2012 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.
#ifndef CONTENT_BROWSER_RENDERER_HOST_GPU_MESSAGE_FILTER_H_
#define CONTENT_BROWSER_RENDERER_HOST_GPU_MESSAGE_FILTER_H_
#include <vector>
#include "base/memory/linked_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequenced_task_runner_helpers.h"
#include "content/common/gpu/gpu_process_launch_causes.h"
#include "content/common/gpu/gpu_result_codes.h"
#include "content/public/browser/browser_message_filter.h"
#include "ui/gfx/native_widget_types.h"
class GpuProcessHost;
struct GPUCreateCommandBufferConfig;
namespace gpu {
struct GPUInfo;
}
namespace content {
class RenderWidgetHelper;
class RenderWidgetHostViewFrameSubscriber;
// A message filter for messages from the renderer to the GpuProcessHost(UIShim)
// in the browser. Such messages are typically destined for the GPU process,
// but need to be mediated by the browser.
class GpuMessageFilter : public BrowserMessageFilter {
public:
GpuMessageFilter(int render_process_id,
RenderWidgetHelper* render_widget_helper);
// BrowserMessageFilter methods:
bool OnMessageReceived(const IPC::Message& message) override;
// This set of API is used to subscribe to frame presentation events.
// See RenderWidgetHostViewFrameSubscriber for more details.
void BeginFrameSubscription(
int route_id,
scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber);
void EndFrameSubscription(int route_id);
private:
friend class BrowserThread;
friend class base::DeleteHelper<GpuMessageFilter>;
struct CreateViewCommandBufferRequest;
struct FrameSubscription;
~GpuMessageFilter() override;
// Message handlers called on the browser IO thread:
void OnEstablishGpuChannel(CauseForGpuLaunch,
IPC::Message* reply);
void OnCreateViewCommandBuffer(
int32 surface_id,
const GPUCreateCommandBufferConfig& init_params,
int32 route_id,
IPC::Message* reply);
// Helper callbacks for the message handlers.
void EstablishChannelCallback(scoped_ptr<IPC::Message> reply,
const IPC::ChannelHandle& channel,
const gpu::GPUInfo& gpu_info);
void CreateCommandBufferCallback(scoped_ptr<IPC::Message> reply,
CreateCommandBufferResult result);
void BeginAllFrameSubscriptions();
void EndAllFrameSubscriptions();
void BeginFrameSubscriptionInternal(
linked_ptr<FrameSubscription> subscription);
void EndFrameSubscriptionInternal(
linked_ptr<FrameSubscription> subscription);
int gpu_process_id_;
int render_process_id_;
scoped_refptr<RenderWidgetHelper> render_widget_helper_;
typedef std::vector<linked_ptr<FrameSubscription> > FrameSubscriptionList;
FrameSubscriptionList frame_subscription_list_;
base::WeakPtrFactory<GpuMessageFilter> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(GpuMessageFilter);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_GPU_MESSAGE_FILTER_H_