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win-dshow: Check return value of ReadFile

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This commit is contained in:
Richard Stanway 2021-03-23 03:15:07 +01:00
parent 45643adb03
commit 6424901120
1 changed files with 13 additions and 11 deletions
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24
plugins/win-dshow/virtualcam-module/virtualcam-filter.cpp
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@ -74,18 +74,20 @@ VCamFilter::VCamFilter()
char res[128];
DWORD len = 0;
ReadFile(file, res, sizeof(res), &len, nullptr);
CloseHandle(file);
res[len] = 0;
int vals = sscanf(res,
"%" PRIu32 "x%" PRIu32 "x%" PRIu64,
&new_cx, &new_cy, &new_interval);
if (vals != 3) {
new_cx = cx;
new_cy = cy;
new_interval = interval;
if (ReadFile(file, res, sizeof(res) - 1, &len,
nullptr)) {
res[len] = 0;
int vals = sscanf(
res, "%" PRIu32 "x%" PRIu32 "x%" PRIu64,
&new_cx, &new_cy, &new_interval);
if (vals != 3) {
new_cx = cx;
new_cy = cy;
new_interval = interval;
}
}
CloseHandle(file);
}
}