/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 *

 * Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>

 * Copyright 2015 Thincast Technologies GmbH

 * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <freerdp/log.h>

#include "shadow.h"

#include "shadow_encomsp.h"

#define TAG SERVER_TAG("shadow")

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT

encomsp_change_participant_control_level(EncomspServerContext* context,

                                         ENCOMSP_CHANGE_PARTICIPANT_CONTROL_LEVEL_PDU* pdu)

{

	BOOL inLobby;

	BOOL mayView;

	BOOL mayInteract;

	rdpShadowClient* client = (rdpShadowClient*)context->custom;

	WLog_INFO(TAG,

	          "ChangeParticipantControlLevel: ParticipantId: %" PRIu32 " Flags: 0x%04" PRIX16 "",

	          pdu->ParticipantId, pdu->Flags);

	mayView = (pdu->Flags & ENCOMSP_MAY_VIEW) ? TRUE : FALSE;

	mayInteract = (pdu->Flags & ENCOMSP_MAY_INTERACT) ? TRUE : FALSE;

	if (mayInteract && !mayView)

		mayView = TRUE; /* may interact implies may view */

	if (mayInteract)

	{

		if (!client->mayInteract)

		{

			/* request interact + view */

			client->mayInteract = TRUE;

			client->mayView = TRUE;

		}

	}

	else if (mayView)

	{

		if (client->mayInteract)

		{

			/* release interact */

			client->mayInteract = FALSE;

		}

		else if (!client->mayView)

		{

			/* request view */

			client->mayView = TRUE;

		}

	}

	else

	{

		if (client->mayInteract)

		{

			/* release interact + view */

			client->mayView = FALSE;

			client->mayInteract = FALSE;

		}

		else if (client->mayView)

		{

			/* release view */

			client->mayView = FALSE;

			client->mayInteract = FALSE;

		}

	}

	inLobby = client->mayView ? FALSE : TRUE;

	if (inLobby != client->inLobby)

	{

		shadow_encoder_reset(client->encoder);

		client->inLobby = inLobby;

	}

	return CHANNEL_RC_OK;

}

int shadow_client_encomsp_init(rdpShadowClient* client)

{

	EncomspServerContext* encomsp;

	encomsp = client->encomsp = encomsp_server_context_new(client->vcm);

	encomsp->rdpcontext = &client->context;

	encomsp->custom = (void*)client;

	encomsp->ChangeParticipantControlLevel = encomsp_change_participant_control_level;

	if (client->encomsp)

		client->encomsp->Start(client->encomsp);

	return 1;

}

void shadow_client_encomsp_uninit(rdpShadowClient* client)

{

	if (client->encomsp)

	{

		client->encomsp->Stop(client->encomsp);

		encomsp_server_context_free(client->encomsp);

		client->encomsp = NULL;

	}

}