Method thread_alloc_framebuffer

src/VNCConn.cpp:199–237

rfbBool VNCConn::thread_alloc_framebuffer(rfbClient* client)
{
  // get VNCConn object belonging to this client
  VNCConn* conn = (VNCConn*) rfbClientGetClientData(client, VNCCONN_OBJ_ID); 

  wxLogDebug(wxT("VNCConn %p: alloc'ing framebuffer w:%i, h:%i"), conn, client->width, client->height);

  wxCriticalSectionLocker lock(conn->mutex_framebuffer);

  // assert 32bpp, as requested with GetClient() in Init()
  if(client->format.bitsPerPixel != 32)
    {
      conn->err.Printf(_("Failure setting up framebuffer: wrong BPP!"));
      return false;
    }

  // ensure that we get the whole framebuffer in case of a resize!
  client->updateRect.x = client->updateRect.y = 0;
  client->updateRect.w = client->width; client->updateRect.h = client->height;

  // free
  if(client->frameBuffer)
    free(client->frameBuffer);

  // alloc, zeroed
  client->frameBuffer = (uint8_t*)calloc(1, client->width*client->height*client->format.bitsPerPixel/8);

  // free front framebuffer
  if(conn->framebuffer_front)
    free(conn->framebuffer_front);

  // alloc, zeroed
  conn->framebuffer_front = (uint8_t*)calloc(1, client->width*client->height*client->format.bitsPerPixel/8);

  // notify our parent
  conn->thread_post_fbresize_notify();
 
  return (client->frameBuffer && conn->framebuffer_front) ? TRUE : FALSE;
}