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/*
* audio_out_solaris.c
* Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of a52dec, a free ATSC A-52 stream decoder.
* See http://liba52.sourceforge.net/ for updates.
*
* a52dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* a52dec is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#ifdef LIBAO_SOLARIS
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/audioio.h>
#include <inttypes.h>
#include "a52.h"
#include "audio_out.h"
#include "audio_out_internal.h"
typedef struct solaris_instance_s {
ao_instance_t ao;
int fd;
int sample_rate;
int set_params;
int flags;
} solaris_instance_t;
static int solaris_setup (ao_instance_t * _instance, int sample_rate,
int * flags, sample_t * level, sample_t * bias)
{
solaris_instance_t * instance = (solaris_instance_t *) _instance;
if ((instance->set_params == 0) && (instance->sample_rate != sample_rate))
return 1;
instance->sample_rate = sample_rate;
*flags = instance->flags;
*level = 1;
*bias = 384;
return 0;
}
static int solaris_play (ao_instance_t * _instance, int flags,
sample_t * _samples)
{
solaris_instance_t * instance = (solaris_instance_t *) _instance;
int16_t int16_samples[256*2];
#ifdef LIBA52_DOUBLE
float samples[256 * 2];
int i;
for (i = 0; i < 256 * 2; i++)
samples[i] = _samples[i];
#else
float * samples = _samples;
#endif
if (instance->set_params) {
audio_info_t info;
/* Setup our parameters */
AUDIO_INITINFO (&info);
info.play.sample_rate = instance->sample_rate;
info.play.precision = 16;
info.play.channels = 2;
info.play.encoding = AUDIO_ENCODING_LINEAR;
/* Write our configuration */
/* An implicit GETINFO is also performed. */
if (ioctl (instance->fd, AUDIO_SETINFO, &info) < 0) {
perror ("Writing audio config block");
return 1;
}
if ((info.play.sample_rate != instance->sample_rate) ||
(info.play.precision != 16) || (info.play.channels != 2)) {
fprintf (stderr, "Wanted %dHz %d bits %d channels\n",
instance->sample_rate, 16, 2);
fprintf (stderr, "Got %dHz %d bits %d channels\n",
info.play.sample_rate, info.play.precision,
info.play.channels);
return 1;
}
instance->flags = flags;
instance->set_params = 0;
} else if ((flags == A52_DOLBY) && (instance->flags == A52_STEREO)) {
fprintf (stderr, "Switching from stereo to dolby surround\n");
instance->flags = A52_DOLBY;
} else if ((flags == A52_STEREO) && (instance->flags == A52_DOLBY)) {
fprintf (stderr, "Switching from dolby surround to stereo\n");
instance->flags = A52_STEREO;
} else if (flags != instance->flags)
return 1;
float2s16_2 (samples, int16_samples);
write (instance->fd, int16_samples, 256 * sizeof (int16_t) * 2);
return 0;
}
static void solaris_close (ao_instance_t * _instance)
{
solaris_instance_t * instance = (solaris_instance_t *) _instance;
close (instance->fd);
}
static ao_instance_t * solaris_open (int flags)
{
solaris_instance_t * instance;
instance = malloc (sizeof (solaris_instance_t));
if (instance == NULL)
return NULL;
instance->ao.setup = solaris_setup;
instance->ao.play = solaris_play;
instance->ao.close = solaris_close;
instance->sample_rate = 0;
instance->set_params = 1;
instance->flags = flags;
instance->fd = open ("/dev/audio", O_WRONLY);
if (instance->fd < 0) {
fprintf (stderr, "Can not open /dev/audio\n");
free (instance);
return NULL;
}
return (ao_instance_t *) instance;
}
ao_instance_t * ao_solaris_open (void)
{
return solaris_open (A52_STEREO);
}
ao_instance_t * ao_solarisdolby_open (void)
{
return solaris_open (A52_DOLBY);
}
#endif
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