Ken Thomases : dsound: Adjust for partial block before prepare-header and add-buffer steps.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2de653552c02cd31f00480092583f1561b4180d4
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=2de653552c02cd31f004800925...

Author: Ken Thomases <ken(a)codeweavers.com>
Date:   Wed Mar 12 02:05:56 2008 -0500

dsound: Adjust for partial block before prepare-header and add-buffer steps.

Otherwise, the wave-in driver(s) may copy incorrect data to internal structures.

---

 dlls/dsound/capture.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/dlls/dsound/capture.c b/dlls/dsound/capture.c
index 0c74ef9..05ab805 100644
--- a/dlls/dsound/capture.c
+++ b/dlls/dsound/capture.c
@@ -1146,7 +1146,10 @@ IDirectSoundCaptureBufferImpl_Start(
 
             for (c = 0; c < device->nrofpwaves; ++c) {
                 device->pwave[c].lpData = (char *)device->buffer + c * blocksize;
-                device->pwave[c].dwBufferLength = blocksize;
+                if (c + 1 == device->nrofpwaves)
+                    device->pwave[c].dwBufferLength = device->buflen - c * blocksize;
+                else
+                    device->pwave[c].dwBufferLength = blocksize;
                 device->pwave[c].dwBytesRecorded = 0;
                 device->pwave[c].dwUser = (DWORD)device;
                 device->pwave[c].dwFlags = 0;
@@ -1167,8 +1170,6 @@ IDirectSoundCaptureBufferImpl_Start(
                     break;
                 }
             }
-            if (device->buflen % blocksize)
-                device->pwave[device->nrofpwaves - 1].dwBufferLength = device->buflen % blocksize;
 
             FillMemory(device->buffer, device->buflen, (device->pwfx->wBitsPerSample == 8) ? 128 : 0);
         }