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decklink: Don't crash when getting hw serial number doesn't return OK

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If the return value isn't OK, it means we might be getting data that
points to an invalid memory address. That shouldn't make us crash.
This commit is contained in:
Vivia Nikolaidou 2017-11-09 00:16:21 +02:00
parent f78be9d698
commit bae9427dc1
1 changed files with 7 additions and 5 deletions
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12
sys/decklink/gstdecklink.cpp
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@ -1239,11 +1239,13 @@ init_devices (gpointer data)
devices[i].input.
config->GetString (bmdDeckLinkConfigDeviceInformationSerialNumber,
(COMSTR_T *) & serial_number);
CONVERT_COM_STRING (serial_number);
devices[i].output.hw_serial_number = g_strdup (serial_number);
devices[i].input.hw_serial_number = g_strdup (serial_number);
GST_DEBUG ("device %d has serial number %s", i, serial_number);
FREE_COM_STRING (serial_number);
if (ret == S_OK) {
CONVERT_COM_STRING (serial_number);
devices[i].output.hw_serial_number = g_strdup (serial_number);
devices[i].input.hw_serial_number = g_strdup (serial_number);
GST_DEBUG ("device %d has serial number %s", i, serial_number);
FREE_COM_STRING (serial_number);
}
}
ret = decklink->QueryInterface (IID_IDeckLinkAttributes,