content/browser/compositor/image_transport_factory.cc

   1 // Copyright 2014 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/compositor/image_transport_factory.h"
   6
   7 #include "base/command_line.h"
   8 #include "content/browser/compositor/gpu_process_transport_factory.h"
   9 #include "ui/compositor/compositor.h"
  10 #include "ui/compositor/compositor_switches.h"
  11 #include "ui/gl/gl_implementation.h"
  12
  13 namespace content {
  14
  15 namespace {
  16 ImageTransportFactory* g_factory = NULL;
  17 bool g_initialized_for_unit_tests = false;
  18 static gfx::DisableNullDrawGLBindings* g_disable_null_draw = NULL;
  19
  20 void SetFactory(ImageTransportFactory* factory) {
  21   g_factory = factory;
  22 }
  23
  24 }
  25
  26 // static
  27 void ImageTransportFactory::Initialize() {
  28   DCHECK(!g_factory || g_initialized_for_unit_tests);
  29   if (g_initialized_for_unit_tests)
  30     return;
  31   SetFactory(new GpuProcessTransportFactory);
  32 }
  33
  34 void ImageTransportFactory::InitializeForUnitTests(
  35     scoped_ptr<ImageTransportFactory> factory) {
  36   DCHECK(!g_factory);
  37   DCHECK(!g_initialized_for_unit_tests);
  38   g_initialized_for_unit_tests = true;
  39
  40   const base::CommandLine* command_line =
  41       base::CommandLine::ForCurrentProcess();
  42   if (command_line->HasSwitch(switches::kEnablePixelOutputInTests))
  43     g_disable_null_draw = new gfx::DisableNullDrawGLBindings;
  44
  45   SetFactory(factory.release());
  46 }
  47
  48 // static
  49 void ImageTransportFactory::Terminate() {
  50   delete g_factory;
  51   g_factory = NULL;
  52   delete g_disable_null_draw;
  53   g_disable_null_draw = NULL;
  54   g_initialized_for_unit_tests = false;
  55 }
  56
  57 // static
  58 ImageTransportFactory* ImageTransportFactory::GetInstance() {
  59   return g_factory;
  60 }
  61
  62 }  // namespace content