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// Copyright 2011 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.
#include "config.h"
#if USE(ACCELERATED_COMPOSITING)
#include "RateLimiter.h"
#include "CCProxy.h"
#include "CCThread.h"
#include "TraceEvent.h"
#include <public/WebGraphicsContext3D.h>
#include <wtf/RefPtr.h>
namespace cc {
class RateLimiter::Task : public CCThread::Task {
public:
static PassOwnPtr<Task> create(RateLimiter* rateLimiter)
{
return adoptPtr(new Task(rateLimiter));
}
virtual ~Task() { }
private:
explicit Task(RateLimiter* rateLimiter)
: CCThread::Task(this)
, m_rateLimiter(rateLimiter)
{
}
virtual void performTask() OVERRIDE
{
m_rateLimiter->rateLimitContext();
}
scoped_refptr<RateLimiter> m_rateLimiter;
};
scoped_refptr<RateLimiter> RateLimiter::create(WebKit::WebGraphicsContext3D* context, RateLimiterClient *client)
{
return make_scoped_refptr(new RateLimiter(context, client));
}
RateLimiter::RateLimiter(WebKit::WebGraphicsContext3D* context, RateLimiterClient *client)
: m_context(context)
, m_active(false)
, m_client(client)
{
ASSERT(context);
}
RateLimiter::~RateLimiter()
{
}
void RateLimiter::start()
{
if (m_active)
return;
TRACE_EVENT0("cc", "RateLimiter::start");
m_active = true;
CCProxy::mainThread()->postTask(RateLimiter::Task::create(this));
}
void RateLimiter::stop()
{
TRACE_EVENT0("cc", "RateLimiter::stop");
m_client = 0;
}
void RateLimiter::rateLimitContext()
{
if (!m_client)
return;
TRACE_EVENT0("cc", "RateLimiter::rateLimitContext");
m_active = false;
m_client->rateLimit();
m_context->rateLimitOffscreenContextCHROMIUM();
}
}
#endif // USE(ACCELERATED_COMPOSITING)
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