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// Copyright 2010 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_LAYERS_VIDEO_LAYER_H_
#define CC_LAYERS_VIDEO_LAYER_H_
#include <memory>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "cc/cc_export.h"
#include "cc/layers/layer.h"
#include "media/base/video_transformation.h"
namespace media { class VideoFrame; }
namespace cc {
class VideoFrameProvider;
class VideoLayerImpl;
// A Layer that contains a Video element.
class CC_EXPORT VideoLayer : public Layer {
public:
static scoped_refptr<VideoLayer> Create(VideoFrameProvider* provider,
media::VideoTransformation transform);
VideoLayer(const VideoLayer&) = delete;
VideoLayer& operator=(const VideoLayer&) = delete;
std::unique_ptr<LayerImpl> CreateLayerImpl(
LayerTreeImpl* tree_impl) const override;
bool RequiresSetNeedsDisplayOnHdrHeadroomChange() const override;
bool Update() override;
// Clears |provider_| to ensure it is not used after destruction.
void StopUsingProvider();
private:
VideoLayer(VideoFrameProvider* provider,
media::VideoTransformation transform);
~VideoLayer() override;
// This pointer is only for passing to VideoLayerImpl's constructor. It should
// never be dereferenced by this class.
ProtectedSequenceReadable<raw_ptr<VideoFrameProvider>> provider_;
const media::VideoTransformation transform_;
};
} // namespace cc
#endif // CC_LAYERS_VIDEO_LAYER_H_
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