From b2ebf709ffa859bc4515bf0c12ba4c347ce3a293 Mon Sep 17 00:00:00 2001
From: Huw Davies <huw@codeweavers.com>
Date: Thu, 10 Jul 2008 15:39:29 +0100
Subject: [PATCH] gdiplus: Partial implementation of
 GdipCreateBitmapFromGdiDib.

---
 dlls/gdiplus/gdiplus.spec |  2 +-
 dlls/gdiplus/image.c      | 41 +++++++++++++++++++++++++++++++++++++++
 include/gdiplusflat.h     |  1 +
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/dlls/gdiplus/gdiplus.spec b/dlls/gdiplus/gdiplus.spec
index 318ec530b39..b1c784de949 100644
--- a/dlls/gdiplus/gdiplus.spec
+++ b/dlls/gdiplus/gdiplus.spec
@@ -73,7 +73,7 @@
 @ stub GdipCreateBitmapFromDirectDrawSurface
 @ stdcall GdipCreateBitmapFromFile(wstr ptr)
 @ stdcall GdipCreateBitmapFromFileICM(wstr ptr)
-@ stub GdipCreateBitmapFromGdiDib
+@ stdcall GdipCreateBitmapFromGdiDib(ptr ptr ptr)
 @ stdcall GdipCreateBitmapFromGraphics(long long ptr ptr)
 @ stdcall GdipCreateBitmapFromHBITMAP(long long ptr)
 @ stub GdipCreateBitmapFromHICON
diff --git a/dlls/gdiplus/image.c b/dlls/gdiplus/image.c
index 8fd452a304d..d2ce0747bbd 100644
--- a/dlls/gdiplus/image.c
+++ b/dlls/gdiplus/image.c
@@ -270,6 +270,47 @@ GpStatus WINGDIPAPI GdipCreateBitmapFromFile(GDIPCONST WCHAR* filename,
     return stat;
 }
 
+GpStatus WINGDIPAPI GdipCreateBitmapFromGdiDib(GDIPCONST BITMAPINFO* info,
+                                               VOID *bits, GpBitmap **bitmap)
+{
+    DWORD height, stride;
+    PixelFormat format;
+
+    FIXME("(%p, %p, %p) - partially implemented\n", info, bits, bitmap);
+
+    height = abs(info->bmiHeader.biHeight);
+    stride = ((info->bmiHeader.biWidth * info->bmiHeader.biBitCount + 31) >> 3) & ~3;
+
+    if(info->bmiHeader.biHeight > 0) /* bottom-up */
+    {
+        bits = (BYTE*)bits + (height - 1) * stride;
+        stride = -stride;
+    }
+
+    switch(info->bmiHeader.biBitCount) {
+    case 1:
+        format = PixelFormat1bppIndexed;
+        break;
+    case 4:
+        format = PixelFormat4bppIndexed;
+        break;
+    case 8:
+        format = PixelFormat8bppIndexed;
+        break;
+    case 24:
+        format = PixelFormat24bppRGB;
+        break;
+    default:
+        FIXME("don't know how to handle %d bpp\n", info->bmiHeader.biBitCount);
+        *bitmap = NULL;
+        return InvalidParameter;
+    }
+
+    return GdipCreateBitmapFromScan0(info->bmiHeader.biWidth, height, stride, format,
+                                     bits, bitmap);
+
+}
+
 /* FIXME: no icm */
 GpStatus WINGDIPAPI GdipCreateBitmapFromFileICM(GDIPCONST WCHAR* filename,
     GpBitmap **bitmap)
diff --git a/include/gdiplusflat.h b/include/gdiplusflat.h
index ad40a67dd57..25b6f5fcee0 100644
--- a/include/gdiplusflat.h
+++ b/include/gdiplusflat.h
@@ -332,6 +332,7 @@ GpStatus WINGDIPAPI GdipConvertToEmfPlusToFile(const GpGraphics*,GpMetafile*,INT
 GpStatus WINGDIPAPI GdipConvertToEmfPlusToStream(const GpGraphics*,GpMetafile*,INT*,IStream*,EmfType,const WCHAR*,GpMetafile**);
 GpStatus WINGDIPAPI GdipCreateBitmapFromFile(GDIPCONST WCHAR*,GpBitmap**);
 GpStatus WINGDIPAPI GdipCreateBitmapFromFileICM(GDIPCONST WCHAR*,GpBitmap**);
+GpStatus WINGDIPAPI GdipCreateBitmapFromGdiDib(GDIPCONST BITMAPINFO*,VOID*,GpBitmap**);
 GpStatus WINGDIPAPI GdipCreateBitmapFromGraphics(INT,INT,GpGraphics*,GpBitmap**);
 GpStatus WINGDIPAPI GdipCreateBitmapFromScan0(INT,INT,INT,PixelFormat,BYTE*,
     GpBitmap**);