shadow_screen.c

 
#include <freerdp/config.h>
 
#include <winpr/assert.h>
 
#include "shadow_surface.h"
 
#include "shadow_screen.h"
#include "shadow_lobby.h"
 
rdpShadowScreen* shadow_screen_new(rdpShadowServer* server)
{
  WINPR_ASSERT(server);
  WINPR_ASSERT(server->subsystem);
 
  rdpShadowScreen* screen = (rdpShadowScreen*)calloc(1, sizeof(rdpShadowScreen));
 
  if (!screen)
    goto fail;
 
  screen->server = server;
  rdpShadowSubsystem* subsystem = server->subsystem;
 
  if (!InitializeCriticalSectionAndSpinCount(&(screen->lock), 4000))
    goto fail;
 
  region16_init(&(screen->invalidRegion));
 
  WINPR_ASSERT(subsystem->selectedMonitor < ARRAYSIZE(subsystem->monitors));
  const MONITOR_DEF* primary = &(subsystem->monitors[subsystem->selectedMonitor]);
  WINPR_ASSERT(primary);
 
  INT64 x = primary->left;
  INT64 y = primary->top;
  INT64 width = primary->right - primary->left + 1;
  INT64 height = primary->bottom - primary->top + 1;
 
  WINPR_ASSERT(x >= 0);
  WINPR_ASSERT(x <= UINT16_MAX);
  WINPR_ASSERT(y >= 0);
  WINPR_ASSERT(y <= UINT16_MAX);
  WINPR_ASSERT(width >= 0);
  WINPR_ASSERT(width <= UINT16_MAX);
  WINPR_ASSERT(height >= 0);
  WINPR_ASSERT(height <= UINT16_MAX);
 
  screen->width = (UINT16)width;
  screen->height = (UINT16)height;
 
  screen->primary =
      shadow_surface_new(server, (UINT16)x, (UINT16)y, (UINT16)width, (UINT16)height);
 
  if (!screen->primary)
    goto fail;
 
  server->surface = screen->primary;
 
  screen->lobby = shadow_surface_new(server, (UINT16)x, (UINT16)y, (UINT16)width, (UINT16)height);
 
  if (!screen->lobby)
    goto fail;
 
  server->lobby = screen->lobby;
 
  if (!shadow_client_init_lobby(server))
    goto fail;
 
  return screen;
 
fail:
  WINPR_PRAGMA_DIAG_PUSH
  WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC
  shadow_screen_free(screen);
  WINPR_PRAGMA_DIAG_POP
 
  return NULL;
}
 
void shadow_screen_free(rdpShadowScreen* screen)
{
  if (!screen)
    return;
 
  DeleteCriticalSection(&(screen->lock));
 
  region16_uninit(&(screen->invalidRegion));
 
  if (screen->primary)
  {
    shadow_surface_free(screen->primary);
    screen->primary = NULL;
  }
 
  if (screen->lobby)
  {
    shadow_surface_free(screen->lobby);
    screen->lobby = NULL;
  }
 
  free(screen);
}
 
BOOL shadow_screen_resize(rdpShadowScreen* screen)
{
  if (!screen)
    return FALSE;
 
  WINPR_ASSERT(screen->server);
 
  rdpShadowSubsystem* subsystem = screen->server->subsystem;
  WINPR_ASSERT(subsystem);
  WINPR_ASSERT(subsystem->monitors);
 
  MONITOR_DEF* primary = &(subsystem->monitors[subsystem->selectedMonitor]);
  WINPR_ASSERT(primary);
 
  const INT32 x = primary->left;
  const INT32 y = primary->top;
  const INT32 width = primary->right - primary->left + 1;
  const INT32 height = primary->bottom - primary->top + 1;
 
  WINPR_ASSERT(x >= 0);
  WINPR_ASSERT(x <= UINT16_MAX);
  WINPR_ASSERT(y >= 0);
  WINPR_ASSERT(y <= UINT16_MAX);
  WINPR_ASSERT(width >= 0);
  WINPR_ASSERT(width <= UINT16_MAX);
  WINPR_ASSERT(height >= 0);
  WINPR_ASSERT(height <= UINT16_MAX);
 
  if (shadow_surface_resize(screen->primary, (UINT16)x, (UINT16)y, (UINT16)width,
                            (UINT16)height) &&
      shadow_surface_resize(screen->lobby, (UINT16)x, (UINT16)y, (UINT16)width, (UINT16)height))
  {
    if (((UINT32)width != screen->width) || ((UINT32)height != screen->height))
    {
      /* screen size is changed. Store new size and reinit lobby */
      screen->width = (UINT32)width;
      screen->height = (UINT32)height;
      shadow_client_init_lobby(screen->server);
    }
    return TRUE;
  }
 
  return FALSE;
}