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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
#define CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
#include <list>
#include <string>
#include "base/callback_forward.h"
#include "base/process/process.h"
#include "content/common/content_export.h"
class GURL;
namespace gpu {
struct GPUInfo;
struct VideoMemoryUsageStats;
}
namespace content {
class GpuDataManagerObserver;
// This class is fully thread-safe.
class GpuDataManager {
public:
// Getter for the singleton.
CONTENT_EXPORT static GpuDataManager* GetInstance();
// This is only called by extensions testing.
virtual void BlacklistWebGLForTesting() = 0;
virtual gpu::GPUInfo GetGPUInfo() const = 0;
// This indicator might change because we could collect more GPU info or
// because the GPU blacklist could be updated.
// If this returns false, any further GPU access, including launching GPU
// process, establish GPU channel, and GPU info collection, should be
// blocked.
// Can be called on any thread.
// If |reason| is not nullptr and GPU access is blocked, upon return, |reason|
// contains a description of the reason why GPU access is blocked.
virtual bool GpuAccessAllowed(std::string* reason) const = 0;
// Requests complete GPU info if it has not already been requested
virtual void RequestCompleteGpuInfoIfNeeded() = 0;
// Check if basic and context GPU info have been collected.
virtual bool IsEssentialGpuInfoAvailable() const = 0;
// Requests that the GPU process report its current video memory usage stats.
virtual void RequestVideoMemoryUsageStatsUpdate(
const base::Callback<void(const gpu::VideoMemoryUsageStats& stats)>&
callback) const = 0;
// Registers/unregister |observer|.
virtual void AddObserver(GpuDataManagerObserver* observer) = 0;
virtual void RemoveObserver(GpuDataManagerObserver* observer) = 0;
// Allows a given domain previously blocked from accessing 3D APIs
// to access them again.
virtual void UnblockDomainFrom3DAPIs(const GURL& url) = 0;
virtual void DisableHardwareAcceleration() = 0;
// Whether a GPU is in use (as opposed to a software renderer).
virtual bool HardwareAccelerationEnabled() const = 0;
// Extensions that are currently disabled.
virtual void GetDisabledExtensions(
std::string* disabled_extensions) const = 0;
protected:
virtual ~GpuDataManager() {}
};
}; // namespace content
#endif // CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
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