$NetBSD: patch-ab,v 1.4 2001/05/16 02:27:53 fredb Exp $

--- ../src/unix/sqUnixSound.c.orig	Thu Feb  8 11:27:04 2001
+++ ../src/unix/sqUnixSound.c
@@ -70,9 +70,16 @@
 # include <fcntl.h>
 # include <sys/time.h>
 # include <sys/ioctl.h>
+#ifdef __NetBSD__
+#include <soundcard.h>
+#ifdef NETBSD_OSS_HACK
+#include <sys/audioio.h>
+#endif
+#else
 # include <sys/soundcard.h>
+#endif
 
-# if !defined(OPEN_SOUND_SYSTEM) && !defined(__FreeBSD__)
+# if !defined(OPEN_SOUND_SYSTEM) && !defined(__FreeBSD__) && !defined(__NetBSD__)
 #    warning: 
 #    warning: sys/soundcard.h did not define OPEN_SOUND_SYSTEM
 #    warning: SOUND SUPPORT DISABLED
@@ -274,6 +279,34 @@
 
 int snd_AvailableSpace(void)
 {
+#ifdef NETBSD_OSS_HACK
+/*
+  This is to work around a bug in NetBSD-1.5.1 and earlier, in which
+  the SNDCTL_DSP_GETOSPACE(&buf_info) ioctl was not handled properly.
+  The correct information is always available via the native audio
+  driver, so use that instead.
+*/
+  struct audio_info info;
+  int freeBlocks;
+
+  if (auFd == -1) return -1;
+
+  if (ioctl(auFd, AUDIO_GETINFO, &info) < 0) {
+    perror("ioctl(AUDIO_GETINFO)");
+    return 0;
+  }
+
+  /* Make certain we have one, full hardware block free. */
+  freeBlocks = info.hiwat - (info.play.seek + info.blocksize - 1)/info.blocksize;
+  if (freeBlocks > 0)
+    {
+      return info.blocksize;
+    }
+  else
+    {
+      auSemaWaiting= true;
+      return 0;
+#else
   audio_buf_info info;
   if (auFd == -1)
     return -1;
@@ -294,6 +326,7 @@
   else
     {
       return info.fragsize;
+#endif
     }
 }