fuchsia/msd_img_context.h

// Copyright 2019 The Fuchsia 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 MSD_IMG_CONTEXT_H
#define MSD_IMG_CONTEXT_H

#include "magma_util/macros.h"
#include "msd.h"

class MsdImgConnection;

class MsdImgContext : public msd_context_t
{
public:
	MsdImgContext(MsdImgConnection* connection) : connection_(connection) { magic_ = kMagic; }

	~MsdImgContext() { magic_ = 0; }

	static MsdImgContext* cast(msd_context_t* buf)
	{
		DASSERT(buf);
		DASSERT(buf->magic_ == kMagic);
		return static_cast<MsdImgContext*>(buf);
	}

	MsdImgConnection* connection() const
	{
		connection_->AssertValid();
		return connection_;
	}

private:
	static const uint32_t kMagic = 'ictx';

	// Connection should always outlive the context.
	MsdImgConnection* connection_;
};

#endif // MSD_IMG_CONTEXT_H