shadow_encomsp.c

 
#include <freerdp/config.h>
 
#include <freerdp/log.h>
#include "shadow.h"
 
#include "shadow_encomsp.h"
 
#define TAG SERVER_TAG("shadow")
 
WINPR_ATTR_NODISCARD
static UINT
encomsp_change_participant_control_level(EncomspServerContext* context,
                                         ENCOMSP_CHANGE_PARTICIPANT_CONTROL_LEVEL_PDU* pdu)
{
  BOOL inLobby = 0;
  BOOL mayView = 0;
  BOOL mayInteract = 0;
  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) != 0;
  mayInteract = (pdu->Flags & ENCOMSP_MAY_INTERACT) != 0;
 
  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);
 
  if (inLobby != client->inLobby)
  {
    if (shadow_encoder_reset(client->encoder) < 0)
      return ERROR_NOT_READY;
    client->inLobby = inLobby;
  }
 
  return CHANNEL_RC_OK;
}
 
int shadow_client_encomsp_init(rdpShadowClient* client)
{
  WINPR_ASSERT(client);
 
  EncomspServerContext* encomsp = client->encomsp = encomsp_server_context_new(client->vcm);
  if (!encomsp)
    return -1;
 
  encomsp->rdpcontext = &client->context;
 
  encomsp->custom = (void*)client;
 
  encomsp->ChangeParticipantControlLevel = encomsp_change_participant_control_level;
 
  if (client->encomsp)
  {
    const UINT rc = client->encomsp->Start(client->encomsp);
    if (rc != CHANNEL_RC_OK)
      return -1;
  }
 
  return 1;
}
 
void shadow_client_encomsp_uninit(rdpShadowClient* client)
{
  WINPR_ASSERT(client);
  if (client->encomsp)
  {
    client->encomsp->Stop(client->encomsp);
    encomsp_server_context_free(client->encomsp);
    client->encomsp = nullptr;
  }
}