src/modules/engines/software_16_ddraw/evas_ddraw_buffer.cpp

   1 #include "evas_common.h"
   2 #include "evas_engine.h"
   3
   4
   5 DDraw_Output_Buffer *
   6 evas_software_ddraw_output_buffer_new(HWND                window,
   7                                       LPDIRECTDRAW        object,
   8                                       LPDIRECTDRAWSURFACE surface_primary,
   9                                       LPDIRECTDRAWSURFACE surface_back,
  10                                       LPDIRECTDRAWSURFACE surface_source,
  11                                       int                 width,
  12                                       int                 height)
  13 {
  14    DDSURFACEDESC        surface_desc;
  15    DDraw_Output_Buffer *ddob;
  16
  17    ddob = (DDraw_Output_Buffer *)calloc(1, sizeof(DDraw_Output_Buffer));
  18    if (!ddob) return NULL;
  19
  20    ddob->dd.window = window;
  21    ddob->dd.object = object;
  22    ddob->dd.surface_primary = surface_primary;
  23    ddob->dd.surface_back = surface_back;
  24    ddob->dd.surface_source = surface_source;
  25    ddob->width = width;
  26    ddob->height = height;
  27    ddob->pitch = width * 2;
  28
  29    ZeroMemory(&surface_desc, sizeof(surface_desc));
  30    surface_desc.dwSize = sizeof(surface_desc);
  31
  32    if (FAILED(ddob->dd.surface_source->Lock(NULL,
  33                                             &surface_desc,
  34                                             DDLOCK_WAIT | DDLOCK_SURFACEMEMORYPTR,
  35                                             NULL)))
  36      {
  37         free(ddob);
  38         return NULL;
  39      }
  40
  41    ddob->im.pixels = (DATA16 *)surface_desc.lpSurface;
  42    ddob->im.w = width;
  43    ddob->im.h = height;
  44    ddob->im.stride = width;
  45    ddob->im.references = 1;
  46
  47    if (FAILED(ddob->dd.surface_source->Unlock(NULL)))
  48      {
  49         free(ddob);
  50         return NULL;
  51      }
  52
  53    return ddob;
  54 }
  55
  56 void
  57 evas_software_ddraw_output_buffer_free(DDraw_Output_Buffer *ddob, int sync)
  58 {
  59    free(ddob);
  60 }
  61
  62 void
  63 evas_software_ddraw_output_buffer_paste(DDraw_Output_Buffer *ddob)
  64 {
  65    RECT  dst_rect;
  66    RECT  src_rect;
  67    POINT p;
  68
  69    SetRect(&src_rect, 0, 0, ddob->width, ddob->height);
  70
  71    if (FAILED(ddob->dd.surface_back->BltFast(0, 0,
  72                                              ddob->dd.surface_source,
  73                                              &src_rect,
  74                                              DDBLTFAST_NOCOLORKEY | DDBLTFAST_WAIT)))
  75      return;
  76
  77    p.x = 0;
  78    p.y = 0;
  79    ClientToScreen(ddob->dd.window, &p);
  80    GetClientRect(ddob->dd.window, &dst_rect);
  81    OffsetRect(&dst_rect, p.x, p.y);
  82    ddob->dd.surface_primary->Blt(&dst_rect,
  83                                  ddob->dd.surface_back, &src_rect,
  84                                  DDBLT_WAIT, NULL);
  85 }