Huw Davies : gdi32: Add an inline helper to return the number of colour entries in a dib.
Alexandre Julliard
julliard at winehq.org
Thu Jul 28 13:55:44 CDT 2011
Module: wine
Branch: master
Commit: 3460665c50cafb5af8e7a8d4d82d6b4aebbbb328
URL: http://source.winehq.org/git/wine.git/?a=commit;h=3460665c50cafb5af8e7a8d4d82d6b4aebbbb328
Author: Huw Davies <huw at codeweavers.com>
Date: Thu Jul 28 15:34:14 2011 +0100
gdi32: Add an inline helper to return the number of colour entries in a dib.
---
dlls/gdi32/dib.c | 16 ++++------------
dlls/gdi32/dibdrv/dc.c | 10 ++--------
dlls/gdi32/gdi_private.h | 6 ++++++
3 files changed, 12 insertions(+), 20 deletions(-)
diff --git a/dlls/gdi32/dib.c b/dlls/gdi32/dib.c
index a590b94..99baf67 100644
--- a/dlls/gdi32/dib.c
+++ b/dlls/gdi32/dib.c
@@ -91,10 +91,7 @@ int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
}
else /* assume BITMAPINFOHEADER */
{
- colors = info->bmiHeader.biClrUsed;
- if (colors > 256) colors = 256;
- if (!colors && (info->bmiHeader.biBitCount <= 8))
- colors = 1 << info->bmiHeader.biBitCount;
+ colors = get_dib_num_of_colors( info );
if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
@@ -212,9 +209,7 @@ static BOOL bitmapinfo_from_user_bitmapinfo( BITMAPINFO *dst, const BITMAPINFO *
static int fill_color_table_from_palette( BITMAPINFO *info, DC *dc )
{
PALETTEENTRY palEntry[256];
- int i, colors = (info->bmiHeader.biBitCount > 8) ? 0 : 1 << info->bmiHeader.biBitCount;
-
- if (info->bmiHeader.biClrUsed) colors = info->bmiHeader.biClrUsed;
+ int i, colors = get_dib_num_of_colors( info );
if (!colors) return 0;
@@ -809,13 +804,11 @@ static int fill_query_info( BITMAPINFO *info, BITMAPOBJ *bmp )
*/
static void copy_color_info(BITMAPINFO *dst, const BITMAPINFO *src, UINT coloruse)
{
- unsigned int colors = src->bmiHeader.biBitCount > 8 ? 0 : 1 << src->bmiHeader.biBitCount;
+ unsigned int colors = get_dib_num_of_colors( src );
RGBQUAD *src_colors = (RGBQUAD *)((char *)src + src->bmiHeader.biSize);
assert( src->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER) );
- if (src->bmiHeader.biClrUsed) colors = src->bmiHeader.biClrUsed;
-
if (dst->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
BITMAPCOREINFO *core = (BITMAPCOREINFO *)dst;
@@ -1219,8 +1212,7 @@ static void DIB_CopyColorTable( DC *dc, BITMAPOBJ *bmp, WORD coloruse, const BIT
}
else
{
- colors = info->bmiHeader.biClrUsed;
- if (!colors) colors = 1 << info->bmiHeader.biBitCount;
+ colors = get_dib_num_of_colors( info );
}
if (colors > 256) {
diff --git a/dlls/gdi32/dibdrv/dc.c b/dlls/gdi32/dibdrv/dc.c
index 50ceffe..aa74859 100644
--- a/dlls/gdi32/dibdrv/dc.c
+++ b/dlls/gdi32/dibdrv/dc.c
@@ -163,7 +163,7 @@ BOOL init_dib_info_from_packed(dib_info *dib, const BITMAPINFOHEADER *bi, WORD u
DWORD *masks = NULL;
RGBQUAD *color_table = NULL, pal_table[256];
BYTE *ptr = (BYTE*)bi + bi->biSize;
- int num_colors = bi->biClrUsed;
+ int num_colors = get_dib_num_of_colors( (const BITMAPINFO *)bi );
if(bi->biCompression == BI_BITFIELDS)
{
@@ -171,7 +171,6 @@ BOOL init_dib_info_from_packed(dib_info *dib, const BITMAPINFOHEADER *bi, WORD u
ptr += 3 * sizeof(DWORD);
}
- if(!num_colors && bi->biBitCount <= 8) num_colors = 1 << bi->biBitCount;
if(num_colors)
{
if(usage == DIB_PAL_COLORS)
@@ -202,15 +201,10 @@ BOOL init_dib_info_from_packed(dib_info *dib, const BITMAPINFOHEADER *bi, WORD u
BOOL init_dib_info_from_bitmapinfo(dib_info *dib, const BITMAPINFO *info, void *bits, enum dib_info_flags flags)
{
- unsigned int colors = 0;
+ unsigned int colors = get_dib_num_of_colors( info );
void *colorptr = (char *)&info->bmiHeader + info->bmiHeader.biSize;
const DWORD *bitfields = (info->bmiHeader.biCompression == BI_BITFIELDS) ? (DWORD *)colorptr : NULL;
- if (info->bmiHeader.biBitCount <= 8)
- {
- colors = 1 << info->bmiHeader.biBitCount;
- if (info->bmiHeader.biClrUsed) colors = info->bmiHeader.biClrUsed;
- }
return init_dib_info( dib, &info->bmiHeader, bitfields, colors ? colorptr : NULL, colors, bits, flags );
}
diff --git a/dlls/gdi32/gdi_private.h b/dlls/gdi32/gdi_private.h
index b825df9..013eb44 100644
--- a/dlls/gdi32/gdi_private.h
+++ b/dlls/gdi32/gdi_private.h
@@ -564,6 +564,12 @@ static inline int get_dib_image_size( const BITMAPINFO *info )
* abs( info->bmiHeader.biHeight );
}
+static inline int get_dib_num_of_colors( const BITMAPINFO *info )
+{
+ if (info->bmiHeader.biClrUsed) return min( info->bmiHeader.biClrUsed, 256 );
+ return info->bmiHeader.biBitCount > 8 ? 0 : 1 << info->bmiHeader.biBitCount;
+}
+
extern void free_heap_bits( struct gdi_image_bits *bits ) DECLSPEC_HIDDEN;
#endif /* __WINE_GDI_PRIVATE_H */
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