[Bug 16329] Make test fails in ds3d.c

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=16329





--- Comment #11 from Raymond <superquad.vortex2 at gmail.com>  2010-08-18 01:13:23 ---
(In reply to comment #10)
> Does this post have anything to do with it?
> 
> http://www.winehq.org/pipermail/wine-devel/2006-September/051025.html

The point is the maximum size of the buffer of the alsa driver of most PCI
sound cards is about 64K bytes and snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS) i.e. buffer size is a multiple of period size

The proposed patch does not work and I guess his sound card does not support
44100Hz since those dsound wav are 22050Hz in early day

bufffer size = 48000  ,  i.e. 48000 x 2 x 2 = 192,000bytes


-    unsigned int                buffer_time = 500000;
-    unsigned int                period_time = 10000;
-    snd_pcm_uframes_t           buffer_size;
-    snd_pcm_uframes_t           period_size;
+    snd_pcm_uframes_t           buffer_size = 48000;
+    snd_pcm_uframes_t           period_size = 1024;
     int                         flags;
     int                         err=0;
     int                         dir=0;
@@ -2561,15 +2559,16 @@ #define EXIT_ON_ERROR(f,e,txt) do \
           wwo->format.Format.nChannels,
           getFormat(wwo->format.Format.wFormatTag));

-    dir=0; 
-    EXIT_ON_ERROR( snd_pcm_hw_params_set_buffer_time_near(pcm, hw_params,
&buffer_time, &dir), MMSYSERR_INVALPARAM, "unable to set buffer time");
-    dir=0; 
-    EXIT_ON_ERROR( snd_pcm_hw_params_set_period_time_near(pcm, hw_params,
&period_time, &dir), MMSYSERR_INVALPARAM, "unable to set period time");
+    buffer_size = buffer_size / ( snd_pcm_format_physical_width(format) *
wwo->format.Format.nChannels );
+    snd_pcm_uframes_t           buffer_size_old = buffer_size;
+    EXIT_ON_ERROR( snd_pcm_hw_params_set_buffer_size_near(pcm, hw_params,
&buffer_size), MMSYSERR_INVALPARAM, "unable to set buffer size");
+    dir=0;
+    EXIT_ON_ERROR( snd_pcm_hw_params_set_period_size_near(pcm, hw_params,
&period_size, &dir), MMSYSERR_INVALPARAM, "unable to set period time");
+    if(buffer_size != buffer_size_old) ERR("buffer_size:%i
buffer_size_old:%i\n", (int)buffer_size, (int)buffer_size_old);

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