$NetBSD: patch-ad,v 1.2 2002/06/23 13:51:43 kent Exp $

--- waveout/sound_driver_oss.cpp.orig	Wed Apr 10 20:46:44 2002
+++ waveout/sound_driver_oss.cpp
@@ -18,7 +18,11 @@
 #include "sound_driver_oss.h"
 #include "math.h"
 
+#if defined(__NetBSD__)
+#define AUDIO_DEVICE "/dev/audio"
+#else
 #define AUDIO_DEVICE "/dev/dsp"
+#endif
 
 int Sound_Driver_OSS::init() {
 
@@ -28,6 +32,10 @@
 	long supported_formats;
 	audio_buf_info buffinf;
  	int request_buffer_size;
+#if defined(__NetBSD__) && SOUND_VERSION <= 0x030000
+	struct audio_info info;
+#endif
+
 
 	if (mix_frequency==-1) {
          	
@@ -106,11 +114,29 @@
 	}
 
 
+#if defined(__NetBSD__) && SOUND_VERSION <= 0x030000
+/*
+	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.
+*/
+	if (ioctl(sound_fd, AUDIO_GETINFO, &info) == 0) {
+		buffinf.fragsize = info.blocksize;
+		buffinf.fragments = info.hiwat - info.play.seek /
+			info.blocksize;
+		buffinf.bytes = info.play.buffer_size;
+	} else {
+		buffinf.fragments--;
+		buffinf.fragsize = buffinf.bytes = buffersize;
+	}
+#else
 	/* This call fails on Linux/PPC */
 	if( (ioctl(sound_fd,SNDCTL_DSP_GETOSPACE,&buffinf)<0) ) {
 
 		ioctl(sound_fd,SNDCTL_DSP_GETBLKSIZE,&buffinf.fragsize);
 	}
+#endif
 
 	
 
@@ -163,17 +189,35 @@
 	
 	for (;;) {
 
+#if defined(__NetBSD__) && SOUND_VERSION <= 0x030000
+/*
+	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.
+*/
+		if (ioctl(sound_fd, AUDIO_GETINFO, &info) == 0) {
+			buffinf.fragsize = info.blocksize;
+			buffinf.fragments = info.hiwat - info.play.seek /
+				info.blocksize;
+			buffinf.bytes = info.play.buffer_size;
+		} else {
+			buffinf.fragments--;
+			buffinf.fragsize = buffinf.bytes = buffersize;
+		}
+#else
 		if ((ioctl(sound_fd,SNDCTL_DSP_GETOSPACE,&buffinf)<0)) {
 
 			buffinf.fragments--;
 			buffinf.fragsize = buffinf.bytes = buffersize;
 		}
+#endif
 
                 if(!buffinf.fragments) break;
 
 		done=mixer->write_bytes(audiobuffer,buffinf.fragsize>buffinf.bytes?buffinf.bytes:buffinf.fragsize);
 
-                write(sound_fd,audiobuffer,done);
+                __pthread_write(sound_fd,audiobuffer,done);
 	}		
 
 	return true;