fuchsia/msd_img_connection.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_CONNECTION_H
#define MSD_IMG_CONNECTION_H

#include <memory>

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

typedef struct _PVRSRV_DEVICE_NODE_ PVRSRV_DEVICE_NODE;
typedef struct _CONNECTION_DATA_ CONNECTION_DATA;

class MsdImgConnection : public msd_connection_t
{
public:
	class Owner
	{
	public:
		virtual PVRSRV_DEVICE_NODE* device_node() = 0;
	};

	// If the current thread is currently servicing a bridge request or other
	// operation on a connection, this will return a pointer to that connection.
	static MsdImgConnection* GetCurrentConnection();

	virtual ~MsdImgConnection();

	MsdImgConnection(Owner* owner, msd_client_id_t client_id);

	bool Init();

	static MsdImgConnection* Cast(msd_connection_t* msd_connection)
	{
		DASSERT(msd_connection);
		DASSERT(msd_connection->magic_ == kMagic);
		return static_cast<MsdImgConnection*>(msd_connection);
	}

	static MsdImgConnection* Cast(void* void_connection)
	{
		DASSERT(void_connection);
		auto msd_connection = static_cast<MsdImgConnection*>(void_connection);
		DASSERT(msd_connection->magic_ == kMagic);
		return msd_connection;
	}

	Owner* owner() const { return owner_; }
	msd_client_id_t client_id() const { return client_id_; }

	char* client_name() { return client_name_; }

private:
	static const uint32_t kMagic = 'icon';
	Owner* owner_;
	msd_client_id_t client_id_;
	CONNECTION_DATA* connection_data_ = nullptr;
	char client_name_[32];
};

#endif // MSD_IMG_CONNECTION_H