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// Copyright 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 CCTextureUpdateController_h
#define CCTextureUpdateController_h
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/time.h"
#include "cc/texture_update_queue.h"
#include "cc/timer.h"
namespace cc {
class ResourceProvider;
class TextureUpdateControllerClient {
public:
virtual void readyToFinalizeTextureUpdates() = 0;
protected:
virtual ~TextureUpdateControllerClient() { }
};
class TextureUpdateController : public TimerClient {
public:
static scoped_ptr<TextureUpdateController> create(TextureUpdateControllerClient* client, Thread* thread, scoped_ptr<TextureUpdateQueue> queue, ResourceProvider* resourceProvider)
{
return make_scoped_ptr(new TextureUpdateController(client, thread, queue.Pass(), resourceProvider));
}
static size_t maxPartialTextureUpdates();
virtual ~TextureUpdateController();
// Discard uploads to textures that were evicted on the impl thread.
void discardUploadsToEvictedResources();
void performMoreUpdates(base::TimeTicks timeLimit);
void finalize();
// TimerClient implementation.
virtual void onTimerFired() OVERRIDE;
// Virtual for testing.
virtual base::TimeTicks now() const;
virtual base::TimeDelta updateMoreTexturesTime() const;
virtual size_t updateMoreTexturesSize() const;
protected:
TextureUpdateController(TextureUpdateControllerClient*, Thread*, scoped_ptr<TextureUpdateQueue>, ResourceProvider*);
static size_t maxFullUpdatesPerTick(ResourceProvider*);
size_t maxBlockingUpdates() const;
void updateTexture(ResourceUpdate);
// This returns true when there were textures left to update.
bool updateMoreTexturesIfEnoughTimeRemaining();
void updateMoreTexturesNow();
TextureUpdateControllerClient* m_client;
scoped_ptr<Timer> m_timer;
scoped_ptr<TextureUpdateQueue> m_queue;
bool m_contentsTexturesPurged;
ResourceProvider* m_resourceProvider;
base::TimeTicks m_timeLimit;
size_t m_textureUpdatesPerTick;
bool m_firstUpdateAttempt;
private:
DISALLOW_COPY_AND_ASSIGN(TextureUpdateController);
};
} // namespace cc
#endif // CCTextureUpdateController_h
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