content/browser/aura/no_transport_image_transport_factory.cc

   1 // Copyright (c) 2013 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 #include "content/browser/aura/no_transport_image_transport_factory.h"
   6
   7 #include "cc/output/context_provider.h"
   8 #include "content/common/gpu/client/gl_helper.h"
   9 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
  10 #include "ui/compositor/compositor.h"
  11
  12 namespace content {
  13
  14 namespace {
  15
  16 class FakeTexture : public ui::Texture {
  17  public:
  18   FakeTexture(scoped_refptr<cc::ContextProvider> context_provider,
  19               float device_scale_factor)
  20       : ui::Texture(false, gfx::Size(), device_scale_factor),
  21         context_provider_(context_provider),
  22         texture_(context_provider_->Context3d()->createTexture()) {}
  23
  24   virtual unsigned int PrepareTexture() OVERRIDE { return texture_; }
  25   virtual WebKit::WebGraphicsContext3D* HostContext3D() OVERRIDE {
  26     return context_provider_->Context3d();
  27   }
  28
  29   virtual void Consume(const std::string& mailbox_name,
  30                        const gfx::Size& new_size) OVERRIDE {
  31     size_ = new_size;
  32   }
  33
  34  private:
  35   virtual ~FakeTexture() {
  36     context_provider_->Context3d()->deleteTexture(texture_);
  37   }
  38
  39   scoped_refptr<cc::ContextProvider> context_provider_;
  40   unsigned texture_;
  41   DISALLOW_COPY_AND_ASSIGN(FakeTexture);
  42 };
  43
  44 }  // anonymous namespace
  45
  46 NoTransportImageTransportFactory::NoTransportImageTransportFactory(
  47     ui::ContextFactory* context_factory)
  48     : context_factory_(context_factory),
  49       context_provider_(
  50           context_factory_->OffscreenContextProviderForMainThread()) {}
  51
  52 NoTransportImageTransportFactory::~NoTransportImageTransportFactory() {}
  53
  54 ui::ContextFactory* NoTransportImageTransportFactory::AsContextFactory() {
  55   return context_factory_.get();
  56 }
  57
  58 gfx::GLSurfaceHandle
  59 NoTransportImageTransportFactory::CreateSharedSurfaceHandle() {
  60   return gfx::GLSurfaceHandle();
  61 }
  62
  63 void NoTransportImageTransportFactory::DestroySharedSurfaceHandle(
  64     gfx::GLSurfaceHandle surface) {}
  65
  66 scoped_refptr<ui::Texture>
  67 NoTransportImageTransportFactory::CreateTransportClient(
  68     float device_scale_factor) {
  69   return new FakeTexture(context_provider_, device_scale_factor);
  70 }
  71
  72 scoped_refptr<ui::Texture> NoTransportImageTransportFactory::CreateOwnedTexture(
  73     const gfx::Size& size,
  74     float device_scale_factor,
  75     unsigned int texture_id) {
  76   return NULL;
  77 }
  78
  79 GLHelper* NoTransportImageTransportFactory::GetGLHelper() {
  80   if (!gl_helper_)
  81     gl_helper_.reset(new GLHelper(context_provider_->Context3d()));
  82   return gl_helper_.get();
  83 }
  84
  85 uint32 NoTransportImageTransportFactory::InsertSyncPoint() { return 0; }
  86
  87 void NoTransportImageTransportFactory::WaitSyncPoint(uint32 sync_point) {}
  88
  89 // We don't generate lost context events, so we don't need to keep track of
  90 // observers
  91 void NoTransportImageTransportFactory::AddObserver(
  92     ImageTransportFactoryObserver* observer) {}
  93
  94 void NoTransportImageTransportFactory::RemoveObserver(
  95     ImageTransportFactoryObserver* observer) {}
  96
  97 }  // namespace content