text: /**
   * FreeRDP: A Remote Desktop Protocol Implementation
   *
   * Copyright 2016 Jiang Zihao <zihao.jiang@yahoo.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_rdpgfx.h"
  
  #define TAG SERVER_TAG("shadow")
  
  /**
   * Function description
   *
   * @return 0 on success, otherwise a Win32 error code
   */
  static UINT rdpgfx_caps_advertise(RdpgfxServerContext* context, RDPGFX_CAPS_ADVERTISE_PDU* capsAdvertise)
  {
  	UINT16 index;
  	RDPGFX_CAPS_CONFIRM_PDU pdu;
  	rdpSettings* settings = context->rdpcontext->settings;
  	UINT32 flags = 0;
  
  	for (index = 0; index < capsAdvertise->capsSetCount; index++)
  	{
  		pdu.capsSet = &(capsAdvertise->capsSets[index]);
  		if (pdu.capsSet->version == RDPGFX_CAPVERSION_10)
  		{
  			if (settings)
  			{
  				flags = pdu.capsSet->flags;
  				settings->GfxSmallCache = (flags & RDPGFX_CAPS_FLAG_SMALL_CACHE);
  				settings->GfxH264 = !(flags & RDPGFX_CAPS_FLAG_AVC_DISABLED);
  			}
  
  			return context->CapsConfirm(context, &pdu);
  		}
  	}
  	for (index = 0; index < capsAdvertise->capsSetCount; index++)
  	{
  		if (pdu.capsSet->version == RDPGFX_CAPVERSION_81)
  		{
  			if (settings)
  			{
  				flags = pdu.capsSet->flags;
  				settings->GfxThinClient = (flags & RDPGFX_CAPS_FLAG_THINCLIENT);
  				settings->GfxSmallCache = (flags & RDPGFX_CAPS_FLAG_SMALL_CACHE);
  				settings->GfxH264 = (flags & RDPGFX_CAPS_FLAG_AVC420_ENABLED);
  			}
  
  			return context->CapsConfirm(context, &pdu);
  		}
  	}
  	for (index = 0; index < capsAdvertise->capsSetCount; index++)
  	{
  		if (pdu.capsSet->version == RDPGFX_CAPVERSION_8)
  		{
  			if (settings)
  			{
  				flags = pdu.capsSet->flags;
  				settings->GfxThinClient = (flags & RDPGFX_CAPS_FLAG_THINCLIENT);
  				settings->GfxSmallCache = (flags & RDPGFX_CAPS_FLAG_SMALL_CACHE);
  			}
  
  			return context->CapsConfirm(context, &pdu);
  		}
  	}
  
  	return CHANNEL_RC_UNSUPPORTED_VERSION;
  }
  
  int shadow_client_rdpgfx_init(rdpShadowClient* client)
  {
  	RdpgfxServerContext* rdpgfx;
  	rdpgfx = client->rdpgfx = rdpgfx_server_context_new(client->vcm);
  	if (!rdpgfx)
  	{
  		return 0;
  	}
  
  	rdpgfx->rdpcontext = &client->context;
  
  	rdpgfx->custom = client;
  
  	rdpgfx->CapsAdvertise = rdpgfx_caps_advertise;
  
  	return 1;
  }
  
  void shadow_client_rdpgfx_uninit(rdpShadowClient* client)
  {
  	if (client->rdpgfx)
  	{
  		rdpgfx_server_context_free(client->rdpgfx);
  		client->rdpgfx = NULL;
  	}
  }
  