src/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 "content/browser/compositor/no_transport_image_transport_factory.h"
  10 #include "ui/compositor/compositor.h"
  11 #include "ui/compositor/compositor_switches.h"
  12 #include "ui/gl/gl_implementation.h"
  13
  14 namespace content {
  15
  16 namespace {
  17 ImageTransportFactory* g_factory = NULL;
  18 bool g_initialized_for_unit_tests = false;
  19 static gfx::DisableNullDrawGLBindings* g_disable_null_draw = NULL;
  20
  21 void SetFactory(ImageTransportFactory* factory) {
  22   g_factory = factory;
  23   ui::ContextFactory::SetInstance(factory->GetContextFactory());
  24 }
  25
  26 }
  27
  28 // static
  29 void ImageTransportFactory::Initialize() {
  30   DCHECK(!g_factory || g_initialized_for_unit_tests);
  31   if (g_initialized_for_unit_tests)
  32     return;
  33   SetFactory(new GpuProcessTransportFactory);
  34 }
  35
  36 void ImageTransportFactory::InitializeForUnitTests(
  37     scoped_ptr<ui::ContextFactory> test_factory) {
  38   DCHECK(!g_factory);
  39   DCHECK(!g_initialized_for_unit_tests);
  40   g_initialized_for_unit_tests = true;
  41
  42   CommandLine* command_line = CommandLine::ForCurrentProcess();
  43   if (command_line->HasSwitch(switches::kEnablePixelOutputInTests))
  44     g_disable_null_draw = new gfx::DisableNullDrawGLBindings;
  45
  46   SetFactory(new NoTransportImageTransportFactory(test_factory.Pass()));
  47 }
  48
  49 // static
  50 void ImageTransportFactory::Terminate() {
  51   ui::ContextFactory::SetInstance(NULL);
  52   delete g_factory;
  53   g_factory = NULL;
  54   delete g_disable_null_draw;
  55   g_disable_null_draw = NULL;
  56   g_initialized_for_unit_tests = false;
  57 }
  58
  59 // static
  60 ImageTransportFactory* ImageTransportFactory::GetInstance() {
  61   return g_factory;
  62 }
  63
  64 }  // namespace content