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// Copyright (c) 2010 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 CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MANAGER_MAC_H_
#define CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MANAGER_MAC_H_
#pragma once
#include <OpenGL/OpenGL.h>
#include <map>
#include "app/surface/transport_dib.h"
#include "base/basictypes.h"
#include "base/lock.h"
#include "gfx/native_widget_types.h"
namespace webkit_glue {
struct WebPluginGeometry;
}
class AcceleratedSurfaceContainerMac;
// Helper class that manages the backing store and on-screen rendering
// of instances of the GPU plugin on the Mac.
class AcceleratedSurfaceContainerManagerMac {
public:
AcceleratedSurfaceContainerManagerMac();
// Allocates a new "fake" PluginWindowHandle, which is used as the
// key for the other operations.
gfx::PluginWindowHandle AllocateFakePluginWindowHandle(bool opaque,
bool root);
// Destroys a fake PluginWindowHandle and associated storage.
void DestroyFakePluginWindowHandle(gfx::PluginWindowHandle id);
// Indicates whether the given PluginWindowHandle is "root", which
// means that we are using accelerated compositing and that this one
// contains the compositor's output.
bool IsRootContainer(gfx::PluginWindowHandle id) const;
// Returns the handle of the compositor surface, or kNullPluginWindow if no
// compositor surface is active.
gfx::PluginWindowHandle root_container_handle() const {
return root_container_handle_;
}
// Informs the manager if gpu rendering is active.
void set_gpu_rendering_active(bool active);
// Sets the size and backing store of the plugin instance. There are two
// versions: the IOSurface version is used on systems where the IOSurface
// API is supported (Mac OS X 10.6 and later); the TransportDIB is used on
// Mac OS X 10.5 and earlier.
void SetSizeAndIOSurface(gfx::PluginWindowHandle id,
int32 width,
int32 height,
uint64 io_surface_identifier);
void SetSizeAndTransportDIB(gfx::PluginWindowHandle id,
int32 width,
int32 height,
TransportDIB::Handle transport_dib);
// Takes an update from WebKit about a plugin's position and size and moves
// the plugin accordingly.
void SetPluginContainerGeometry(const webkit_glue::WebPluginGeometry& move);
// Draws the plugin container associated with the given id into the given
// OpenGL context, which must already be current.
void Draw(CGLContextObj context, gfx::PluginWindowHandle id);
// Causes the next Draw call on each container to trigger a texture upload.
// Should be called any time the drawing context has changed.
void ForceTextureReload();
// Notifies a surface that it has been painted to.
void SetSurfaceWasPaintedTo(gfx::PluginWindowHandle id, uint64 surface_id);
// Notifies the root container that its surface is invalid.
void SetRootSurfaceInvalid();
// Returns if a given surface should be shown.
bool SurfaceShouldBeVisible(gfx::PluginWindowHandle id) const;
private:
uint32 current_id_;
// Maps a "fake" plugin window handle to the corresponding container.
AcceleratedSurfaceContainerMac*
MapIDToContainer(gfx::PluginWindowHandle id) const;
// A map that associates plugin window handles with their containers.
typedef std::map<gfx::PluginWindowHandle, AcceleratedSurfaceContainerMac*>
PluginWindowToContainerMap;
PluginWindowToContainerMap plugin_window_to_container_map_;
// The "root" container, which is only used to draw the output of
// the accelerated compositor if it is active. Currently,
// accelerated plugins (Core Animation and Pepper 3D) are drawn on
// top of the page's contents rather than transformed and composited
// with the rest of the page. At some point we would like them to be
// treated uniformly with other page elements; when this is done,
// the separate treatment of the root container can go away because
// there will only be one container active when the accelerated
// compositor is active.
AcceleratedSurfaceContainerMac* root_container_;
gfx::PluginWindowHandle root_container_handle_;
// True if gpu rendering is active. The root container is created on demand
// and destroyed only when a renderer process exits. When the compositor was
// created, this is set to |false| while the compositor is not needed.
bool gpu_rendering_active_;
// Both |plugin_window_to_container_map_| and the
// AcceleratedSurfaceContainerMac in it are not threadsafe, but accessed from
// multiple threads. All these accesses are guarded by this lock.
mutable Lock lock_;
DISALLOW_COPY_AND_ASSIGN(AcceleratedSurfaceContainerManagerMac);
};
#endif // CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MANAGER_MAC_H_
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