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// Copyright 2015 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 CHROME_RENDERER_PLUGINS_PLUGIN_PREROLLER_H_
#define CHROME_RENDERER_PLUGINS_PLUGIN_PREROLLER_H_
#include "base/macros.h"
#include "content/public/common/webplugininfo.h"
#include "content/public/renderer/plugin_instance_throttler.h"
#include "content/public/renderer/render_frame_observer.h"
#include "third_party/blink/public/web/web_plugin_params.h"
#include "url/gurl.h"
class SkBitmap;
// This class manages a plugin briefly for the purposes of keyframe extraction.
// Once a keyframe has been extracted, this class will replace the plugin with
// a ChromePluginPlaceholder. The actual plugin will continue to live in a
// throttled state. This class manages its own lifetime.
class PluginPreroller : public content::PluginInstanceThrottler::Observer,
public content::RenderFrameObserver {
public:
// Does not take ownership of |render_frame|, |plugin|, or |throttler|.
PluginPreroller(content::RenderFrame* render_frame,
const blink::WebPluginParams& params,
const content::WebPluginInfo& info,
const std::string& identifier,
const base::string16& name,
const base::string16& message,
content::PluginInstanceThrottler* throttler);
~PluginPreroller() override;
private:
// content::PluginInstanceThrottler::Observer methods:
void OnKeyframeExtracted(const SkBitmap* bitmap) override;
void OnThrottleStateChange() override;
void OnThrottlerDestroyed() override;
// content::RenderFrameObserver implementation.
void OnDestruct() override;
blink::WebPluginParams params_;
content::WebPluginInfo info_;
std::string identifier_;
base::string16 name_;
base::string16 message_;
content::PluginInstanceThrottler* throttler_;
GURL keyframe_data_url_;
DISALLOW_COPY_AND_ASSIGN(PluginPreroller);
};
#endif // CHROME_RENDERER_PLUGINS_PLUGIN_PREROLLER_H_
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