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[gdi,bitmap] initialize buffer solid black

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This commit is contained in:
Armin Novak
2024-08-21 15:14:06 +02:00
parent 502640caca
commit 8f55f33951
1 changed files with 10 additions and 4 deletions
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14
libfreerdp/gdi/bitmap.c
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@@ -155,10 +155,14 @@ HGDI_BITMAP gdi_CreateCompatibleBitmap(HGDI_DC hdc, UINT32 nWidth, UINT32 nHeigh
hBitmap->objectType = GDIOBJECT_BITMAP;
hBitmap->format = hdc->format;
hBitmap->width = nWidth;
hBitmap->height = nHeight;
hBitmap->data = winpr_aligned_malloc(
1ull * nWidth * nHeight * FreeRDPGetBytesPerPixel(hBitmap->format), 16);
WINPR_ASSERT(nWidth <= INT32_MAX);
hBitmap->width = (INT32)nWidth;
WINPR_ASSERT(nHeight <= INT32_MAX);
hBitmap->height = (INT32)nHeight;
size_t size = 1ull * nWidth * nHeight * FreeRDPGetBytesPerPixel(hBitmap->format);
hBitmap->data = winpr_aligned_malloc(size, 16);
hBitmap->free = winpr_aligned_free;
if (!hBitmap->data)
@@ -167,6 +171,8 @@ HGDI_BITMAP gdi_CreateCompatibleBitmap(HGDI_DC hdc, UINT32 nWidth, UINT32 nHeigh
return NULL;
}
/* Initialize with 0xff */
memset(hBitmap->data, 0xff, size);
hBitmap->scanline = nWidth * FreeRDPGetBytesPerPixel(hBitmap->format);
return hBitmap;
}