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// Copyright (c) 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.
// This class is an implementation of the ChromotingView using Pepper devices
// as the backing stores. This class is used only on pepper thread.
// Chromoting objects access this object through PepperViewProxy which
// delegates method calls on the pepper thread.
#ifndef REMOTING_CLIENT_PLUGIN_PEPPER_VIEW_H_
#define REMOTING_CLIENT_PLUGIN_PEPPER_VIEW_H_
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "base/task.h"
#include "media/base/video_frame.h"
#include "ppapi/cpp/graphics_2d.h"
#include "ppapi/cpp/point.h"
#include "remoting/client/chromoting_view.h"
#include "remoting/client/frame_consumer.h"
#include "ui/gfx/size.h"
namespace remoting {
class ChromotingInstance;
class ClientContext;
class PepperView : public ChromotingView,
public FrameConsumer {
public:
// Constructs a PepperView that draws to the |rendering_device|. The
// |rendering_device| instance must outlive this class.
PepperView(ChromotingInstance* instance, ClientContext* context);
virtual ~PepperView();
// ChromotingView implementation.
virtual bool Initialize() OVERRIDE;
virtual void TearDown() OVERRIDE;
virtual void Paint() OVERRIDE;
virtual void SetSolidFill(uint32 color) OVERRIDE;
virtual void UnsetSolidFill() OVERRIDE;
virtual void SetConnectionState(ConnectionState state) OVERRIDE;
virtual void UpdateLoginStatus(bool success, const std::string& info)
OVERRIDE;
virtual double GetHorizontalScaleRatio() const OVERRIDE;
virtual double GetVerticalScaleRatio() const OVERRIDE;
// FrameConsumer implementation.
virtual void AllocateFrame(media::VideoFrame::Format format,
size_t width,
size_t height,
base::TimeDelta timestamp,
base::TimeDelta duration,
scoped_refptr<media::VideoFrame>* frame_out,
Task* done);
virtual void ReleaseFrame(media::VideoFrame* frame);
virtual void OnPartialFrameOutput(media::VideoFrame* frame,
UpdatedRects* rects,
Task* done);
// This is called when the dimension of the plugin element has changed.
// Return true if plugin size has changed, false otherwise.
bool SetPluginSize(const gfx::Size& plugin_size);
private:
void OnPaintDone(base::Time paint_start);
// Set the dimension of the entire host screen.
void SetHostSize(const gfx::Size& host_size);
void PaintFrame(media::VideoFrame* frame, UpdatedRects* rects);
// Render the rectangle of |frame| to the backing store.
// Returns true if this rectangle is not clipped.
bool PaintRect(media::VideoFrame* frame, const gfx::Rect& rect);
// Blanks out a rectangle in an image.
void BlankRect(pp::ImageData& image_data, const pp::Rect& rect);
// Perform a flush on the graphics context.
void FlushGraphics(base::Time paint_start);
// Reference to the creating plugin instance. Needed for interacting with
// pepper. Marking explicitly as const since it must be initialized at
// object creation, and never change.
ChromotingInstance* const instance_;
// Context should be constant for the lifetime of the plugin.
ClientContext* const context_;
pp::Graphics2D graphics2d_;
// A backing store that saves the current desktop image.
scoped_ptr<pp::ImageData> backing_store_;
// True if there is pending paint commands in Pepper's queue. This is set to
// true if the last flush returns a PP_ERROR_INPROGRESS error.
bool flush_blocked_;
// The size of the plugin element.
gfx::Size plugin_size_;
// The size of the host screen.
gfx::Size host_size_;
bool is_static_fill_;
uint32 static_fill_color_;
ScopedRunnableMethodFactory<PepperView> task_factory_;
DISALLOW_COPY_AND_ASSIGN(PepperView);
};
} // namespace remoting
#endif // REMOTING_CLIENT_PLUGIN_PEPPER_VIEW_H_
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