From: Andrew Eikum <aeikum@codeweavers.com>
Subject: [PATCH] dsound: Request a more exact buffer size from MMDevAPI
Message-Id: <20111012201004.GI409@foghorn.codeweavers.com>
Date: Wed, 12 Oct 2011 15:10:04 -0500
---
dlls/dsound/primary.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/dlls/dsound/primary.c b/dlls/dsound/primary.c
index 7243cc6..9155634 100644
--- a/dlls/dsound/primary.c
+++ b/dlls/dsound/primary.c
@@ -84,6 +84,8 @@ static void DSOUND_RecalcPrimary(DirectSoundDevice *device)
HRESULT DSOUND_ReopenDevice(DirectSoundDevice *device, BOOL forcewave)
{
+ UINT prebuf_frames;
+ REFERENCE_TIME prebuf_rt;
HRESULT hres;
TRACE("(%p, %d)\n", device, forcewave);
@@ -112,10 +114,11 @@ HRESULT DSOUND_ReopenDevice(DirectSoundDevice *device, BOOL forcewave)
return hres;
}
- /* buffer size = 200 * 100000 (100 ns) = 2.0 seconds */
+ prebuf_frames = device->prebuf * DSOUND_fraglen(device->pwfx->nSamplesPerSec, device->pwfx->nBlockAlign) / device->pwfx->nBlockAlign;
+ prebuf_rt = (prebuf_frames / (double)device->pwfx->nSamplesPerSec) * 10000000;
hres = IAudioClient_Initialize(device->client,
AUDCLNT_SHAREMODE_SHARED, AUDCLNT_STREAMFLAGS_NOPERSIST,
- 200 * 100000, 50000, device->pwfx, NULL);
+ prebuf_rt, 50000, device->pwfx, NULL);
if(FAILED(hres)){
IAudioClient_Release(device->client);
device->client = NULL;