mmdevapi: Make buffer size divisible by number of periods.

dlls/mmdevapi/tests/render.c

@@ -935,7 +935,7 @@ static void test_clock(int share)
     if (share)
     ok(gbsize == bufsize,
        "BufferSize %u at rate %u\n", gbsize, pwfx->nSamplesPerSec);
-    else todo_wine
+    else
     ok(gbsize == parts * fragment || gbsize == MulDiv(bufsize, 1, 1024) * 1024,
        "BufferSize %u misfits fragment size %u at rate %u\n", gbsize, fragment, pwfx->nSamplesPerSec);
 

dlls/winealsa.drv/mmdevdrv.c

@@ -1416,6 +1416,8 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
      * ALSA period 220 vs.  221 frames in mmdevapi and
      *      buffer 883 vs. 2205 frames in mmdevapi! */
     This->bufsize_frames = MulDiv(duration, fmt->nSamplesPerSec, 10000000);
+    if(mode == AUDCLNT_SHAREMODE_EXCLUSIVE)
+        This->bufsize_frames -= This->bufsize_frames % This->mmdev_period_frames;
     This->hidden_frames = This->alsa_period_frames + This->mmdev_period_frames +
         MulDiv(fmt->nSamplesPerSec, EXTRA_SAFE_RT, 10000000);
 

dlls/winecoreaudio.drv/mmdevdrv.c

@@ -1235,6 +1235,8 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
     This->period_frames = MulDiv(period, This->fmt->nSamplesPerSec, 10000000);
 
     This->bufsize_frames = MulDiv(duration, fmt->nSamplesPerSec, 10000000);
+    if(mode == AUDCLNT_SHAREMODE_EXCLUSIVE)
+        This->bufsize_frames -= This->bufsize_frames % This->period_frames;
 
     if(This->dataflow == eCapture){
         int i, nbuffs = (This->bufsize_frames / This->period_frames) + 1;

dlls/wineoss.drv/mmdevdrv.c

@@ -1099,6 +1099,8 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
     This->period_frames = MulDiv(fmt->nSamplesPerSec, period, 10000000);
 
     This->bufsize_frames = MulDiv(duration, fmt->nSamplesPerSec, 10000000);
+    if(mode == AUDCLNT_SHAREMODE_EXCLUSIVE)
+        This->bufsize_frames -= This->bufsize_frames % This->period_frames;
     This->local_buffer = HeapAlloc(GetProcessHeap(), 0,
             This->bufsize_frames * fmt->nBlockAlign);
     if(!This->local_buffer){