[ros-diffs] [tkreuzer] 59586: [GDI32] Handle CBM_CREATDIB [WIN32K] Make sure compressed DIBs have a bitmap size in the BITMAPINFOHEADER

Author: tkreuzer
Date: Thu Jul 25 21:03:14 2013
New Revision: 59586

URL: http://svn.reactos.org/svn/reactos?rev=59586&view=rev
Log:
[GDI32] Handle CBM_CREATDIB
[WIN32K] Make sure compressed DIBs have a bitmap size in the BITMAPINFOHEADER

Modified:
    branches/dib_rewrite/win32ss/gdi/gdi32/objects/dibitmap.c
    branches/dib_rewrite/win32ss/gdi/ntgdi/dibitmap.c

Modified: branches/dib_rewrite/win32ss/gdi/gdi32/objects/dibitmap.c
URL:
http://svn.reactos.org/svn/reactos/branches/dib_rewrite/win32ss/gdi/gdi32/o…
==============================================================================
--- branches/dib_rewrite/win32ss/gdi/gdi32/objects/dibitmap.c	[iso-8859-1] (original)
+++ branches/dib_rewrite/win32ss/gdi/gdi32/objects/dibitmap.c	[iso-8859-1] Thu Jul 25
21:03:14 2013
@@ -198,6 +198,11 @@
         if (pbmi->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
         {
             pbmi = ConvertBitmapCoreInfo(pbmi, iUsage);
+            if (pbmi == NULL)
+            {
+                return NULL;
+            }
+
             bConvertedInfo = TRUE;
         }
 
@@ -227,21 +232,30 @@
         cjInfo = 0;
     }
 
+    /* Check for the undocumented CBM_CREATDIB flag */
     if (fdwInit & CBM_CREATDIB)
     {
-        if (!pbmi) return NULL;
-
-        //__debugbreak();
-        return 0;
-    }
-    else
-    {
-        if (!pbmih)
+        /* We need a BITMAPINFO */
+        if (pbmi == NULL)
+        {
+            /* LastError is not set here! */
+            goto cleanup;
+        }
+
+        /* Get the dimension from the BITMAPINFO */
+        cx = pbmi->bmiHeader.biWidth;
+        cy = abs(pbmi->bmiHeader.biHeight);
+    }
+    else
+    {
+        /* We need the BITMAPINFOHEADER */
+        if (pbmih == NULL)
         {
             SetLastError(ERROR_INVALID_PARAMETER);
             goto cleanup;
         }
 
+        /* Check the type of the BITMAPINFOHEADER */
         if (pbmih->biSize == sizeof(BITMAPCOREHEADER))
         {
             PBITMAPCOREHEADER pbch = (PBITMAPCOREHEADER)pbmih;
@@ -258,11 +272,13 @@
             SetLastError(ERROR_INVALID_PARAMETER);
             goto cleanup;
         }
-
-        if ((cx == 0) || (cy == 0))
-        {
-            return GetStockObject(DEFAULT_BITMAP);
-        }
+    }
+
+    /* Check if either width or height is 0 */
+    if ((cx == 0) || (cy == 0))
+    {
+        /* Return the default bitmap */
+        return GetStockObject(DEFAULT_BITMAP);
     }
 
 
@@ -279,7 +295,10 @@
                                        0);
 
 cleanup:
-    if (bConvertedInfo && pbmi) HeapFree(GetProcessHeap(), 0, (PVOID)pbmi);
+    if (bConvertedInfo)
+    {
+        HeapFree(GetProcessHeap(), 0, (PVOID)pbmi);
+    }
 
     return hbmp;
 }

Modified: branches/dib_rewrite/win32ss/gdi/ntgdi/dibitmap.c
URL:
http://svn.reactos.org/svn/reactos/branches/dib_rewrite/win32ss/gdi/ntgdi/d…
==============================================================================
--- branches/dib_rewrite/win32ss/gdi/ntgdi/dibitmap.c	[iso-8859-1] (original)
+++ branches/dib_rewrite/win32ss/gdi/ntgdi/dibitmap.c	[iso-8859-1] Thu Jul 25 21:03:14
2013
@@ -56,14 +56,22 @@
     }
     else
     {
+        /* This is a compressed format, no line width. */
         pbmf->cjWidthBytes = 0;
-    }
-
-    /* Check compressed format and top-down */
-    if ((pbmf->iFormat > BMF_32BPP) && (pbmf->sizel.cy < 0))
-    {
-        DPRINT1("Compressed bitmaps cannot be top-down.\n");
-        return FALSE;
+
+        /* Check if we have a proper image size */
+        if (pbmf->cjImageSize == 0)
+        {
+            DPRINT1("Invalid format, need biSizeImage != 0\n");
+            return FALSE;
+        }
+
+        /* Check for top-down */
+        if (pbmf->sizel.cy < 0)
+        {
+            DPRINT1("Compressed bitmaps cannot be top-down.\n");
+            return FALSE;
+        }
     }
 
     // FIXME: check bitmap extensions / size
@@ -611,6 +619,7 @@
             return NULL;
         }
 
+        /* Get the DC surface */
         psurfDC = pdc->dclevel.pSurface;
     }
     else
@@ -654,8 +663,8 @@
         else
         {
             ppalBmp = CreateDIBPalette(pbmi, pdc, iUsage);
-        }
-    }
+            }
+            }
     else
     {
         if (psurfDC)
@@ -674,8 +683,8 @@
         GDIOBJ_vReferenceObjectByPointer(&ppalBmp->BaseObject);
     }
 
-    /* Allocate a surface for the bitmap */
-    psurfBmp = SURFACE_AllocSurface(STYPE_BITMAP, cx, cy, iFormat, 0, 0, NULL);
+        /* Allocate a surface for the bitmap */
+        psurfBmp = SURFACE_AllocSurface(STYPE_BITMAP, cx, cy, iFormat, 0, 0, NULL);
     if (psurfBmp)
     {
         /* Set new palette for the bitmap */
@@ -1310,7 +1319,7 @@
     HANDLE hSecure;
     ULONG cyDIB;
     INT yTop, iResult;
-__debugbreak();
+//__debugbreak();
     /* Check if parameters are valid */
     if ((cNumScan == 0) || (cx >= INT_MAX) || (cy >= INT_MAX))
     {