From 17cff085fbca1c95df3cf832a2c3c7207b3b9d35 Mon Sep 17 00:00:00 2001
From: Jason Edmeades <us@the-edmeades.demon.co.uk>
Date: Tue, 15 Mar 2005 15:38:34 +0000
Subject: [PATCH] Avoid trap in mixerGetLineControlsA when cControls is
 uninitialized and MIXER_GETLINECONTROLSSF_ONEBYTYPE requested.

---
 dlls/winmm/winmm.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/dlls/winmm/winmm.c b/dlls/winmm/winmm.c
index 5c2f3a73949..a9b3eea0c1e 100644
--- a/dlls/winmm/winmm.c
+++ b/dlls/winmm/winmm.c
@@ -488,7 +488,15 @@ UINT WINAPI mixerGetLineControlsA(HMIXEROBJ hmix, LPMIXERLINECONTROLSA lpmlcA,
     mlcW.dwLineID = lpmlcA->dwLineID;
     mlcW.u.dwControlID = lpmlcA->u.dwControlID;
     mlcW.u.dwControlType = lpmlcA->u.dwControlType;
-    mlcW.cControls = lpmlcA->cControls;
+
+    /* Debugging on Windows shows for MIXER_GETLINECONTROLSF_ONEBYTYPE only,
+       the control count is assumed to be 1 - This is relied upon by a game,
+       "Dynomite Deluze"                                                    */
+    if (MIXER_GETLINECONTROLSF_ONEBYTYPE == fdwControls) {
+        mlcW.cControls = 1;
+    } else {
+        mlcW.cControls = lpmlcA->cControls;
+    }
     mlcW.cbmxctrl = sizeof(MIXERCONTROLW);
     mlcW.pamxctrl = HeapAlloc(GetProcessHeap(), 0,
 			      mlcW.cControls * mlcW.cbmxctrl);