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/*
esd: audio output for ESounD (highly untested nowadays (?))
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
see COPYING and AUTHORS files in distribution or http://mpg123.org
initially written by Eric B. Mitchell ("esd port" should be this file...)
*/
/* First the common header, including config.h
...this is important for stuff like _FILE_OFFSET_BITS */
#include "mpg123app.h"
#include <esd.h>
#include <errno.h>
#include <assert.h>
#ifdef SOLARIS
#include <stropts.h>
#include <sys/conf.h>
#endif
#ifdef NETBSD
#include <sys/ioctl.h>
#include <sys/audioio.h>
#endif
#include "debug.h"
static unsigned esd_rate = 0, esd_format = 0, esd_channels = 0;
static int open_esound(audio_output_t *ao)
{
esd_format_t format = ESD_STREAM | ESD_PLAY;
if (!esd_rate)
{
int esd;
esd_server_info_t *info;
esd_format_t fmt;
if ((esd = esd_open_sound(NULL)) >= 0)
{
info = esd_get_server_info(esd);
esd_rate = info->rate;
fmt = info->format;
esd_free_server_info(info);
esd_close(esd);
}
else
{
esd_rate = esd_audio_rate;
fmt = esd_audio_format;
}
esd_format = MPG123_ENC_UNSIGNED_8;
if ((fmt & ESD_MASK_BITS) == ESD_BITS16)
esd_format |= MPG123_ENC_SIGNED_16;
esd_channels = fmt & ESD_MASK_CHAN;
}
if (ao->format == -1)
ao->format = esd_format;
else if (!(ao->format & esd_format))
{
error1("Unsupported audio format: %d\n", ao->format);
errno = EINVAL;
return -1;
}
if (ao->format & MPG123_ENC_SIGNED_16)
format |= ESD_BITS16;
else if (ao->format & MPG123_ENC_UNSIGNED_8)
format |= ESD_BITS8;
else assert(0);
if (ao->channels == -1) ao->channels = 2;
else if (ao->channels <= 0 || ao->channels > esd_channels)
{
error1("Unsupported no of channels: %d\n", ao->channels);
errno = EINVAL;
return -1;
}
if (ao->channels == 1)
format |= ESD_MONO;
else if (ao->channels == 2)
format |= ESD_STEREO;
else assert(0);
if (ao->rate == -1) ao->rate = esd_rate;
else if (ao->rate > esd_rate)
return -1;
ao->fn = esd_play_stream_fallback(format, ao->rate, ao->device, "mpg123");
return (ao->fn);
}
static int get_formats_esound (audio_output_t *ao)
{
if (0 < ao->channels && ao->channels <= esd_channels
&& 0 < ao->rate && ao->rate <= esd_rate)
{
return esd_format;
} else {
return -1;
}
}
static int write_esound(audio_output_t *ao,unsigned char *buf,int len)
{
return write(ao->fn,buf,len);
}
static int close_esound(audio_output_t *ao)
{
close (ao->fn);
return 0;
}
#ifdef SOLARIS
static void flush_esound (audio_output_t *ao)
{
ioctl (ao->fn, I_FLUSH, FLUSHRW);
}
#else
#ifdef NETBSD
static void flush_esound (audio_output_t *ao)
{
ioctl (ao->fn, AUDIO_FLUSH, 0);
}
#else
/* Dunno what to do on Linux and Cygwin, but the func must be at least defined! */
static void flush_esound (audio_output_t *ao)
{
}
#endif
#endif
static int init_esound(audio_output_t* ao)
{
if (ao==NULL) return -1;
/* Set callbacks */
ao->open = open_esound;
ao->flush = flush_esound;
ao->write = write_esound;
ao->get_formats = get_formats_esound;
ao->close = close_esound;
/* Success */
return 0;
}
/*
Module information data structure
*/
mpg123_module_t mpg123_output_module_info = {
/* api_version */ MPG123_MODULE_API_VERSION,
/* name */ "esd",
/* description */ "Output audio using ESounD (The Enlightened Sound Daemon).",
/* revision */ "$Rev: 1698 $",
/* handle */ NULL,
/* init_output */ init_esound,
};
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