Module: wine Branch: master Commit: 7c479e797f62f789467fa1701d30b9d26543c70a URL: https://gitlab.winehq.org/wine/wine/-/commit/7c479e797f62f789467fa1701d30b9d...
Author: Nikolay Sivov nsivov@codeweavers.com Date: Mon Nov 27 09:22:47 2023 +0100
gdi32/emf: Align and pad bitmap data in EMRSETDIBITSTODEVICE records.
---
dlls/gdi32/emfdc.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a/dlls/gdi32/emfdc.c b/dlls/gdi32/emfdc.c index a93696d0446..fdd915a106f 100644 --- a/dlls/gdi32/emfdc.c +++ b/dlls/gdi32/emfdc.c @@ -1968,6 +1968,7 @@ BOOL EMFDC_SetDIBitsToDevice( DC_ATTR *dc_attr, INT x_dst, INT y_dst, DWORD widt UINT src_height, stride; BITMAPINFOHEADER bih; BITMAPINFO *bi; + void *ptr;
/* calculate the size of the colour table and the image */ if (!emf_parse_user_bitmapinfo( &bih, &info->bmiHeader, usage, TRUE, @@ -1993,7 +1994,7 @@ BOOL EMFDC_SetDIBitsToDevice( DC_ATTR *dc_attr, INT x_dst, INT y_dst, DWORD widt }
/* check for overflows */ - payload_size = bmi_size + img_size; + payload_size = aligned_size(bmi_size) + aligned_size(img_size); if (payload_size < bmi_size) return 0;
emr_size = sizeof (EMRSETDIBITSTODEVICE) + payload_size; @@ -2002,14 +2003,6 @@ BOOL EMFDC_SetDIBitsToDevice( DC_ATTR *dc_attr, INT x_dst, INT y_dst, DWORD widt /* allocate record */ if (!(emr = HeapAlloc( GetProcessHeap(), 0, emr_size ))) return FALSE;
- /* write a bitmap info header (with colours) to the record */ - bi = (BITMAPINFO *)&emr[1]; - bi->bmiHeader = bih; - emf_copy_colours_from_user_bitmapinfo( bi, info, usage ); - - /* write bitmap bits to the record */ - memcpy ( (BYTE *)&emr[1] + bmi_size, bits, img_size ); - emr->emr.iType = EMR_SETDIBITSTODEVICE; emr->emr.nSize = emr_size; emr->rclBounds.left = x_dst; @@ -2024,12 +2017,22 @@ BOOL EMFDC_SetDIBitsToDevice( DC_ATTR *dc_attr, INT x_dst, INT y_dst, DWORD widt emr->cySrc = height; emr->offBmiSrc = sizeof(EMRSETDIBITSTODEVICE); emr->cbBmiSrc = bmi_size; - emr->offBitsSrc = sizeof(EMRSETDIBITSTODEVICE) + bmi_size; + emr->offBitsSrc = sizeof(EMRSETDIBITSTODEVICE) + aligned_size(bmi_size); emr->cbBitsSrc = img_size; emr->iUsageSrc = usage; emr->iStartScan = startscan; emr->cScans = lines;
+ /* write a bitmap info header (with colours) to the record */ + bi = (BITMAPINFO *)((BYTE *)emr + emr->offBmiSrc); + bi->bmiHeader = bih; + emf_copy_colours_from_user_bitmapinfo( bi, info, usage ); + pad_record( bi, bmi_size ); + + /* write bitmap bits to the record */ + ptr = memcpy ( (BYTE *)emr + emr->offBitsSrc, bits, img_size ); + pad_record( ptr, img_size ); + if ((ret = emfdc_record( get_dc_emf( dc_attr ), (EMR*)emr ))) emfdc_update_bounds( get_dc_emf( dc_attr ), &emr->rclBounds );