chrome/browser/gpu/gpu_feature_checker.h

   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 #ifndef CHROME_BROWSER_GPU_GPU_FEATURE_CHECKER_H_
   6 #define CHROME_BROWSER_GPU_GPU_FEATURE_CHECKER_H_
   7
   8 #include "base/callback.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "content/public/browser/gpu_data_manager_observer.h"
  11 #include "gpu/config/gpu_feature_type.h"
  12
  13 namespace content {
  14 class GpuDataManager;
  15 }  // namespace content
  16
  17 class GPUFeatureChecker : public base::RefCountedThreadSafe<GPUFeatureChecker>,
  18                           public content::GpuDataManagerObserver {
  19  public:
  20   typedef base::Callback<void(bool feature_available)> FeatureAvailableCallback;
  21
  22   GPUFeatureChecker(gpu::GpuFeatureType feature,
  23                     FeatureAvailableCallback callback);
  24
  25   // Check to see if |feature_| is available on the current GPU. |callback_|
  26   // will be called to indicate the availability of the feature. Must be called
  27   // from the the UI thread.
  28   void CheckGPUFeatureAvailability();
  29
  30   // content::GpuDataManagerObserver
  31   virtual void OnGpuInfoUpdate() OVERRIDE;
  32  private:
  33   friend class base::RefCountedThreadSafe<GPUFeatureChecker>;
  34
  35   virtual ~GPUFeatureChecker();
  36
  37   gpu::GpuFeatureType feature_;
  38   FeatureAvailableCallback callback_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(GPUFeatureChecker);
  41 };
  42
  43 #endif  // CHROME_BROWSER_GPU_GPU_FEATURE_CHECKER_H_