reactos/win32ss/reactx/ntddraw/d3dkmt.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * PURPOSE:          Native DirectDraw implementation
   5  * FILE:             win32ss/reactx/ntddraw/d3dkmt.c
   6  * PROGRAMER:        Sebastian Gasiorek (sebastian.gasiorek@reactos.com)
   7  */
   8
   9 #include <win32k.h>
  10 #include <debug.h>
  11
  12 DWORD
  13 APIENTRY
  14 NtGdiDdDDICreateDCFromMemory(D3DKMT_CREATEDCFROMMEMORY *desc)
  15 {
  16     PSURFACE psurf;
  17     HDC hDC;
  18
  19     const struct d3dddi_format_info
  20     {
  21         D3DDDIFORMAT format;
  22         unsigned int bit_count;
  23         DWORD compression;
  24         unsigned int palette_size;
  25         DWORD mask_r, mask_g, mask_b;
  26     } *format = NULL;
  27     unsigned int i;
  28
  29     static const struct d3dddi_format_info format_info[] =
  30     {
  31         { D3DDDIFMT_R8G8B8,   24, BI_RGB,       0,   0x00000000, 0x00000000, 0x00000000 },
  32         { D3DDDIFMT_A8R8G8B8, 32, BI_RGB,       0,   0x00000000, 0x00000000, 0x00000000 },
  33         { D3DDDIFMT_X8R8G8B8, 32, BI_RGB,       0,   0x00000000, 0x00000000, 0x00000000 },
  34         { D3DDDIFMT_R5G6B5,   16, BI_BITFIELDS, 0,   0x0000f800, 0x000007e0, 0x0000001f },
  35         { D3DDDIFMT_X1R5G5B5, 16, BI_BITFIELDS, 0,   0x00007c00, 0x000003e0, 0x0000001f },
  36         { D3DDDIFMT_A1R5G5B5, 16, BI_BITFIELDS, 0,   0x00007c00, 0x000003e0, 0x0000001f },
  37         { D3DDDIFMT_A4R4G4B4, 16, BI_BITFIELDS, 0,   0x00000f00, 0x000000f0, 0x0000000f },
  38         { D3DDDIFMT_X4R4G4B4, 16, BI_BITFIELDS, 0,   0x00000f00, 0x000000f0, 0x0000000f },
  39         { D3DDDIFMT_P8,       8,  BI_RGB,       256, 0x00000000, 0x00000000, 0x00000000 },
  40     };
  41
  42     if (!desc)
  43         return STATUS_INVALID_PARAMETER;
  44
  45     if (!desc->pMemory)
  46         return STATUS_INVALID_PARAMETER;
  47
  48     for (i = 0; i < sizeof(format_info) / sizeof(*format_info); ++i)
  49     {
  50         if (format_info[i].format == desc->Format)
  51         {
  52             format = &format_info[i];
  53             break;
  54         }
  55     }
  56
  57     if (!format)
  58         return STATUS_INVALID_PARAMETER;
  59
  60     if (desc->Width > (UINT_MAX & ~3) / (format->bit_count / 8) ||
  61         !desc->Pitch || desc->Pitch < (((desc->Width * format->bit_count + 31) >> 3) & ~3) ||
  62         !desc->Height || desc->Height > UINT_MAX / desc->Pitch)
  63     {
  64         return STATUS_INVALID_PARAMETER;
  65     }
  66
  67     if (!desc->hDeviceDc || !(hDC = NtGdiCreateCompatibleDC(desc->hDeviceDc)))
  68     {
  69         return STATUS_INVALID_PARAMETER;
  70     }
  71
  72     /* Allocate a surface */
  73     psurf = SURFACE_AllocSurface(STYPE_BITMAP,
  74                                  desc->Width,
  75                                  desc->Height,
  76                                  BitmapFormat(format->bit_count, format->compression),
  77                                  BMF_TOPDOWN | BMF_NOZEROINIT,
  78                                  desc->Pitch,
  79                                  0,
  80                                  desc->pMemory);
  81
  82     /* Mark as API bitmap */
  83     psurf->flags |= (DDB_SURFACE | API_BITMAP);
  84
  85     desc->hDc = hDC;
  86     /* Get the handle for the bitmap */
  87     desc->hBitmap = (HBITMAP)psurf->SurfObj.hsurf;
  88
  89     /* Unlock the surface and return */
  90     SURFACE_UnlockSurface(psurf);
  91
  92     NtGdiSelectBitmap(desc->hDc, desc->hBitmap);
  93
  94     return STATUS_SUCCESS;
  95 }
  96
  97 DWORD
  98 APIENTRY
  99 NtGdiDdDDIDestroyDCFromMemory(const D3DKMT_DESTROYDCFROMMEMORY *desc)
 100 {
 101     if (!desc)
 102         return STATUS_INVALID_PARAMETER;
 103
 104     if (GDI_HANDLE_GET_TYPE(desc->hDc)  != GDI_OBJECT_TYPE_DC ||
 105         GDI_HANDLE_GET_TYPE(desc->hBitmap) != GDI_OBJECT_TYPE_BITMAP)
 106         return STATUS_INVALID_PARAMETER;
 107
 108     NtGdiDeleteObjectApp(desc->hBitmap);
 109     NtGdiDeleteObjectApp(desc->hDc);
 110
 111     return STATUS_SUCCESS;
 112 }