There has been enough interest in this that I decided just to post the
following hacks.  These will have no effect on a machine not running
Solaris.  I am not sure if they work on SUNOS but if you want to try,
compile it with -DSOLARIS.

All files in question are in the src directory:

1.  Edit sound.h and change SOUND_SHM_SAMP_SIZE to 16384

For the next four steps edit the file sound_driver.c

2.  Add the following around line 19:

#ifdef SOLARIS
#include <sys/audioio.h>
#endif

3.  You'll see a section which reads:

#ifdef HPUX
        if(g_use_alib) {
                child_sound_init_alib();
        } else {
                child_sound_init_hpdev();
        }
#endif
#if defined(__linux__) || defined(OSS)
        child_sound_init_linux();
#endif

Change this to (note the only change is the addition of three lines):

#ifdef HPUX
        if(g_use_alib) {
                child_sound_init_alib();
        } else {
                child_sound_init_hpdev();
        }
#endif
#ifdef SOLARIS
        child_sound_init_solaris();
#endif
#if defined(__linux__) || defined(OSS)
        child_sound_init_linux();
#endif

4.  You'll see a section which reads:

void child_sound_init_linux();
void child_sound_init_hpdev();
void child_sound_init_alib();

Change this to read:

#ifdef SOLARIS
void child_sound_init_solaris();
#endif
void child_sound_init_linux();
void child_sound_init_hpdev();
void child_sound_init_alib();

5.  Now add the following at the end of the file:

#ifdef SOLARIS
void
child_sound_init_solaris()
{
        struct audio_info       audioi,audioj;
        char    *str;
        int     speaker;
        int     ret;
        int     i;

        g_audio_socket = open("/dev/audio", O_WRONLY, 0);
        if(g_audio_socket < 0) {
                printf("open /dev/audio failed, ret: %d, errno:%d\n",
                        g_audio_socket, errno);
                exit(1);
        }
        ret = ioctl(g_audio_socket, AUDIO_GETINFO, &audioi);
        audioi.play.sample_rate = g_preferred_rate;
        audioi.play.encoding = AUDIO_ENCODING_LINEAR;
        audioi.play.precision = 16;
        audioi.play.channels = 2;
        ret = ioctl(g_audio_socket, AUDIO_SETINFO, &audioi);
        ret = ioctl(g_audio_socket, AUDIO_GETINFO, &audioj);
        printf("Output rate: %d Hz\n",audioj.play.sample_rate);
        printf("Output encoding: %d, %d bits, %d byte buffer\n",audioj.play.encoding, audioj.play.precision, audioj.play.buffer_size);
        printf("Output channels: %d\n",audioj.play.channels);
}
#endif

Now recompile sound_driver.o and relink.  You should be able to do this by
typing make.

Your binary of kegs should now support Audio on a solaris box, sun4m or
newer with 16 bit audio.  You can test this by typing kegs -audio 1.

I have to add -arate 22050 and halve the sampling rate on my slower
machines but it sounds great.  (Even has the crackling sounds of the
original GS!)

Let me know how this works for you.  Hopefully Kent will add this to the
next release of KEGS.

Enjoy,

jonathan

--
Jonathan Kalbfeld
ThoughtWave Technologies LLC
UNIX, Networking, Programming
+1 415 386 UNIX
		"All your router are belong to us!"