Source to src/sd-solaris/sound.c

 /*
  * UAE - The Un*x Amiga Emulator
  *
  * Support for Solaris sound
  *
  * Copyright 1996, 1997 Manfred Thole
  */

#include "sysconfig.h"
#include "sysdeps.h"

#include "options.h"
#include "memory.h"
#include "events.h"
#include "custom.h"
#include "audio.h"
#include "gensound.h"
#include "sounddep/sound.h"

#if !defined HAVE_SYS_AUDIOIO_H

/* SunOS 4.1.x */
#include <sys/ioctl.h>
#include <sun/audioio.h>
#ifndef AUDIO_ENCODING_LINEAR
#define AUDIO_ENCODING_LINEAR (3)
#endif

#else

/* SunOS 5.x/NetBSD */
#include <sys/audioio.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#endif

int sndbufsize;
int sound_fd;
static int have_sound;
uae_u16 sndbuffer[44100];
uae_u16 *sndbufpt;

void close_sound(void)
{
    if (have_sound)
	close(sound_fd);
}

int setup_sound(void)
{
    sound_fd = open ("/dev/audio", O_WRONLY);
    have_sound = !(sound_fd < 0);
    if (!have_sound)
      return 0;

    sound_available = 1;
    return 1;
}

int init_sound (void)
{
    int rate, dspbits;

    struct audio_info sfd_info;

    if (currprefs.sound_maxbsiz < 128 || currprefs.sound_maxbsiz > 44100) {
	fprintf(stderr, "Sound buffer size %d out of range.\n", currprefs.sound_maxbsiz);
	currprefs.sound_maxbsiz = 8192;
    }

    rate = currprefs.sound_freq;
    dspbits = currprefs.sound_bits;
    AUDIO_INITINFO(&sfd_info);
    sfd_info.play.sample_rate = rate;
    sfd_info.play.channels = 1;
    sfd_info.play.precision = dspbits;
    sfd_info.play.encoding = (dspbits == 8 ) ? AUDIO_ENCODING_ULAW : AUDIO_ENCODING_LINEAR;
    if (ioctl(sound_fd, AUDIO_SETINFO, &sfd_info)) {
	fprintf(stderr, "Can't use sample rate %d with %d bits, %s!\n", rate, dspbits, (dspbits ==8) ? "ulaw" : "linear");
	return 0;
    }
    obtained_freq = rate;

    init_sound_table16 ();

    if (dspbits == 8)
	sample_handler = sample_ulaw_handler;
    else
	sample_handler = sample16_handler;

    sndbufpt = sndbuffer;
    sound_available = 1;
    sndbufsize = currprefs.sound_maxbsiz;
    printf ("Sound driver found and configured for %d bits, %s at %d Hz, buffer is %d bytes\n", dspbits, (dspbits ==8) ? "ulaw" : "linear", rate, sndbufsize);
    return 1;
}