Upstream version 11.40.277.0
[platform/framework/web/crosswalk.git] / src / content / plugin / webplugin_accelerated_surface_proxy_mac.cc
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #import <OpenGL/OpenGL.h>
6
7 #include "content/plugin/webplugin_accelerated_surface_proxy_mac.h"
8
9 #include "base/bind.h"
10 #include "base/command_line.h"
11 #include "content/plugin/webplugin_proxy.h"
12 #include "content/public/common/content_switches.h"
13 #include "ui/surface/accelerated_surface_mac.h"
14 #include "ui/surface/transport_dib.h"
15
16 namespace content {
17
18 WebPluginAcceleratedSurfaceProxy* WebPluginAcceleratedSurfaceProxy::Create(
19     WebPluginProxy* plugin_proxy,
20     gfx::GpuPreference gpu_preference) {
21   // This code path shouldn't be taken if CA plugins are disabled
22   // because the CA drawing model shouldn't be advertised.
23   DCHECK(!CommandLine::ForCurrentProcess()->HasSwitch(
24       switches::kDisableCoreAnimationPlugins));
25
26   AcceleratedSurface* surface = new AcceleratedSurface;
27   // It's possible for OpenGL to fail to initialize (e.g., if an incompatible
28   // mode is forced via flags), so handle that gracefully.
29   if (!surface->Initialize(NULL, true, gpu_preference)) {
30     delete surface;
31     return NULL;
32   }
33
34   return new WebPluginAcceleratedSurfaceProxy(plugin_proxy, surface);
35 }
36
37 WebPluginAcceleratedSurfaceProxy::WebPluginAcceleratedSurfaceProxy(
38     WebPluginProxy* plugin_proxy,
39     AcceleratedSurface* surface)
40         : plugin_proxy_(plugin_proxy),
41           surface_(surface) {
42 }
43
44 WebPluginAcceleratedSurfaceProxy::~WebPluginAcceleratedSurfaceProxy() {
45   if (surface_) {
46     surface_->Destroy();
47     delete surface_;
48     surface_ = NULL;
49   }
50 }
51
52 void WebPluginAcceleratedSurfaceProxy::SetSize(const gfx::Size& size) {
53   if (!surface_)
54     return;
55
56   uint32 io_surface_id = surface_->SetSurfaceSize(size);
57   // If allocation fails for some reason, still inform the plugin proxy.
58   plugin_proxy_->AcceleratedPluginAllocatedIOSurface(
59       size.width(), size.height(), io_surface_id);
60 }
61
62 CGLContextObj WebPluginAcceleratedSurfaceProxy::context() {
63   return surface_ ? surface_->context() : NULL;
64 }
65
66 void WebPluginAcceleratedSurfaceProxy::StartDrawing() {
67   if (!surface_)
68     return;
69
70   surface_->MakeCurrent();
71   surface_->Clear(gfx::Rect(surface_->GetSize()));
72 }
73
74 void WebPluginAcceleratedSurfaceProxy::EndDrawing() {
75   if (!surface_)
76     return;
77
78   surface_->SwapBuffers();
79   plugin_proxy_->AcceleratedPluginSwappedIOSurface();
80 }
81
82 }  // namespace content