From 7c62fe4639d7c6b8dbeb2e95561339f360660f40 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20H=C3=B6hle?= <hoehle@users.sourceforge.net>
Date: Wed, 21 Oct 2009 16:54:33 +0200
Subject: [PATCH] mciwave: Seek stops and rounds position down modulo
 nBlockAlign.

---
 dlls/mciwave/mciwave.c | 33 ++++++++++++++++++++++-----------
 dlls/winmm/tests/mci.c | 12 ++++++++++++
 2 files changed, 34 insertions(+), 11 deletions(-)

diff --git a/dlls/mciwave/mciwave.c b/dlls/mciwave/mciwave.c
index b7a054b571a..d60d41515b6 100644
--- a/dlls/mciwave/mciwave.c
+++ b/dlls/mciwave/mciwave.c
@@ -1240,26 +1240,37 @@ static DWORD WAVE_mciResume(MCIDEVICEID wDevID, DWORD dwFlags, LPMCI_GENERIC_PAR
 static DWORD WAVE_mciSeek(MCIDEVICEID wDevID, DWORD dwFlags, LPMCI_SEEK_PARMS lpParms)
 {
     WINE_MCIWAVE*	wmw = WAVE_mciGetOpenDev(wDevID);
+    DWORD		position, dwRet;
 
     TRACE("(%04X, %08X, %p);\n", wDevID, dwFlags, lpParms);
 
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
     if (wmw == NULL)		return MCIERR_INVALID_DEVICE_ID;
 
-    WAVE_mciStop(wDevID, MCI_WAIT, 0);
+    position = dwFlags & (MCI_SEEK_TO_START|MCI_SEEK_TO_END|MCI_TO);
+    if (!position)		return MCIERR_MISSING_PARAMETER;
+    if (position&(position-1))	return MCIERR_FLAGS_NOT_COMPATIBLE;
 
-    if (dwFlags & MCI_SEEK_TO_START) {
-	wmw->dwPosition = 0;
-    } else if (dwFlags & MCI_SEEK_TO_END) {
-	wmw->dwPosition = wmw->ckWaveData.cksize;
-    } else if (dwFlags & MCI_TO) {
-	wmw->dwPosition = WAVE_ConvertTimeFormatToByte(wmw, lpParms->dwTo);
+    /* Stop sends MCI_NOTIFY_ABORTED when needed */
+    dwRet = WAVE_mciStop(wDevID, MCI_WAIT, 0);
+    if (dwRet != MMSYSERR_NOERROR) return dwRet;
+
+    if (dwFlags & MCI_TO) {
+	position = WAVE_ConvertTimeFormatToByte(wmw, lpParms->dwTo);
+	if (position > wmw->ckWaveData.cksize)
+	    return MCIERR_OUTOFRANGE;
+    } else if (dwFlags & MCI_SEEK_TO_START) {
+	position = 0;
     } else {
-	WARN("dwFlag doesn't tell where to seek to...\n");
-	return MCIERR_MISSING_PARAMETER;
+	position = wmw->ckWaveData.cksize;
     }
-
-    TRACE("Seeking to position=%u bytes\n", wmw->dwPosition);
+    /* Seek rounds down, unless at end */
+    if (position != wmw->ckWaveData.cksize) {
+	position /= wmw->lpWaveFormat->nBlockAlign;
+	position *= wmw->lpWaveFormat->nBlockAlign;
+    }
+    wmw->dwPosition = position;
+    TRACE("Seeking to position=%u bytes\n", position);
 
     if (dwFlags & MCI_NOTIFY)
 	WAVE_mciNotify(lpParms->dwCallback, wmw, MCI_NOTIFY_SUCCESSFUL);
diff --git a/dlls/winmm/tests/mci.c b/dlls/winmm/tests/mci.c
index 248958b0064..e450a2220b4 100644
--- a/dlls/winmm/tests/mci.c
+++ b/dlls/winmm/tests/mci.c
@@ -486,6 +486,18 @@ static void test_asyncWAVE(HWND hwnd)
     err = mciSendString("seek mysound to 0 wait", NULL, 0, NULL);
     ok(!err,"mci seek to start returned error: %d\n", err);
 
+    /* Seek stops. */
+    err = mciSendString("status mysound mode", buf, sizeof(buf), NULL);
+    ok(!err,"mci status mode returned error: %d\n", err);
+    if(!err) ok(!strcmp(buf,"stopped"), "mci status mode: %s\n", buf);
+
+    err = mciSendString("seek mysound wait", NULL, 0, NULL);
+    ok(err==MCIERR_MISSING_PARAMETER,"mci seek to nowhere returned error: %d\n", err);
+
+    /* cdaudio does not detect to start to end as error */
+    err = mciSendString("seek mysound to start to 0", NULL, 0, NULL);
+    ok(err==MCIERR_FLAGS_NOT_COMPATIBLE,"mci seek to start to 0 returned error: %d\n", err);
+
     err = mciSendString("play mysound to 1000 notify", NULL, 0, hwnd);
     ok(!err,"mci play returned error: %d\n", err);