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/* play.c - play a sound file on the speaker
**
** Copyright (C) 1989 by Jef Poskanzer.
**
** Modified 24-May-91 by Jamie Zawinski (for Lucid Emacs).
** Modified 17-Dec-92 by Jamie Zawinski (largely rewritten for SunOS 4.1.3).
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation. This software is provided "as is" without express or
** implied warranty.
*/
/* Synched up with: Not in FSF. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#if __STDC__ || defined(STDC_HEADERS)
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h> /* for open() */
#endif
#include <stdio.h>
#include <string.h>
#include <sys/signal.h>
#include <sys/fcntl.h>
#include <sys/file.h>
#include <multimedia/libaudio.h>
#include <multimedia/audio_device.h>
#if __STDC__ || defined(STDC_HEADERS) /* warning suppression */
extern int audio__setplayhdr();
extern int audio__setgain();
extern int audio__flush();
extern int audio_decode_filehdr();
extern int audio_read_filehdr();
extern int audio_cmp_hdr();
extern int audio_enc_to_str();
extern int audio_drain();
extern void usleep();
#endif
#ifdef emacs
# include <config.h>
# include "lisp.h"
# include "sysdep.h"
# include "emacsfns.h"
# include <errno.h>
# define perror(string) \
message("audio: %s, %s ", string, strerror (errno))
# define warn(str) message ("audio: %s ", GETTEXT (str))
#else /* !emacs */
# define warn(str) fprintf (stderr, "%s\n", (str))
#endif /* emacs */
static SIGTYPE (*sighup_handler) ();
static SIGTYPE (*sigint_handler) ();
static SIGTYPE sighandler (int sig);
static int audio_fd;
#define audio_open() open ("/dev/audio", (O_WRONLY | O_NDELAY), 0)
static int reset_volume_p, reset_device_p;
static double old_volume;
static Audio_hdr dev_hdr;
void play_sound_file (char *name, int volume);
void play_sound_data (unsigned char *data, int length, int volume);
static int
init_device (int volume, unsigned char *data, int fd,
unsigned int *header_length)
{
#ifdef SUNOS4_0_3
if (header_length) *header_length = 0;
return 0;
#else
Audio_hdr file_hdr;
reset_volume_p = 0;
reset_device_p = 0;
if (data && fd) abort (); /* one or the other */
if (AUDIO_SUCCESS != audio_get_play_config (audio_fd, &dev_hdr))
{
perror ("Not a valid audio device");
return 1;
}
if (AUDIO_SUCCESS != (data
? audio_decode_filehdr (data, &file_hdr, header_length)
: audio_read_filehdr (fd, &file_hdr, 0, 0)))
{
if (data)
perror ("invalid audio data");
else
perror ("invalid audio file");
return 1;
}
audio_flush_play (audio_fd);
if (0 != audio_cmp_hdr (&dev_hdr, &file_hdr))
{
Audio_hdr new_hdr;
new_hdr = file_hdr;
reset_device_p = 1;
if (AUDIO_SUCCESS != audio_set_play_config (audio_fd, &new_hdr))
{
char buf1 [100], buf2 [100], buf3 [250];
audio_enc_to_str (&file_hdr, buf1);
audio_enc_to_str (&new_hdr, buf2);
sprintf (buf3, "wanted %s, got %s", buf1, buf2);
warn (buf3);
return 1;
}
}
if (volume < 0 || volume > 100)
{
char buf [255];
sprintf (buf, "volume must be between 0 and 100 (not %d)", volume);
warn (buf);
return 1;
}
{
/* set the volume; scale it to 0.0 - 1.0 */
double V = (volume / 100.0);
audio_get_play_gain (audio_fd, &old_volume);
reset_volume_p = 1;
audio_set_play_gain (audio_fd, &V);
}
return 0;
#endif
}
static void
reset_device (int wait_p)
{
if (wait_p)
audio_drain (audio_fd, 1);
else
audio_flush_play (audio_fd);
if (reset_device_p)
audio_set_play_config (audio_fd, &dev_hdr);
if (reset_volume_p)
audio_set_play_gain (audio_fd, &old_volume);
}
void
play_sound_file (char *sound_file, int volume)
{
int rrtn, wrtn;
unsigned char buf [255];
int file_fd;
audio_fd = audio_open ();
if (audio_fd < 0)
{
perror ("open /dev/audio");
return;
}
/* where to find the proto for signal()... */
sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
file_fd = open (sound_file, O_RDONLY, 0);
if (file_fd < 0)
{
perror (sound_file);
goto END_OF_PLAY;
}
if (init_device (volume, (unsigned char *) 0, file_fd, (unsigned int *) 0))
goto END_OF_PLAY;
while (1)
{
rrtn = read (file_fd, (char *) buf, sizeof (buf));
if (rrtn < 0)
{
perror ("read");
goto END_OF_PLAY;
}
if (rrtn == 0)
break;
while (1)
{
wrtn = write (audio_fd, (char *) buf, rrtn);
if (wrtn < 0)
{
perror ("write");
goto END_OF_PLAY;
}
if (wrtn != 0)
break;
if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
goto END_OF_PLAY;
}
if (wrtn != rrtn)
{
char buf [255];
sprintf (buf, "play: rrtn = %d, wrtn = %d", rrtn, wrtn);
warn (buf);
goto END_OF_PLAY;
}
}
END_OF_PLAY:
if (file_fd > 0)
close (file_fd);
if (audio_fd > 0)
{
reset_device (1);
close (audio_fd);
}
(void) signal (SIGHUP, sighup_handler);
(void) signal (SIGINT, sigint_handler);
}
void
play_sound_data (unsigned char *data, int length, int volume)
{
int wrtn, start = 0;
unsigned int ilen;
audio_fd = -1;
if (length == 0) return;
/* this is just to get a better error message */
if (strncmp (".snd\0", (char *) data, 4))
{
warn ("Not valid audio data (bad magic number)");
goto END_OF_PLAY;
}
if (length <= sizeof (Audio_hdr))
{
warn ("Not valid audio data (too short)");
goto END_OF_PLAY;
}
audio_fd = audio_open ();
if (audio_fd < 0)
{
perror ("open /dev/audio");
return;
}
/* where to find the proto for signal()... */
sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
if (init_device (volume, data, 0, &ilen))
goto END_OF_PLAY;
data += (ilen<<2);
length -= (ilen<<2);
if (length <= 1)
goto END_OF_PLAY;
while (1)
{
wrtn = write (audio_fd, (char *) (data+start), length-start);
if (wrtn < 0)
{
perror ("write");
goto END_OF_PLAY;
}
if (wrtn != 0)
{
start += wrtn;
break;
}
if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
goto END_OF_PLAY;
}
if (wrtn != length)
{
char buf [255];
sprintf (buf, "play: rrtn = %d, wrtn = %d", length, wrtn);
warn (buf);
goto END_OF_PLAY;
}
END_OF_PLAY:
if (audio_fd > 0)
{
reset_device (1);
close (audio_fd);
}
(void) signal (SIGHUP, sighup_handler);
(void) signal (SIGINT, sigint_handler);
}
/* #### sigcontext doesn't exist in Solaris. This should be updated
to be correct for Solaris. */
static void
sighandler (int sig)
{
if (audio_fd > 0)
{
reset_device (0);
close (audio_fd);
}
if (sig == SIGHUP && sighup_handler)
sighup_handler (sig);
else if (sig == SIGINT && sigint_handler)
sigint_handler (sig);
else
exit (1);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.