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/*
* madplay - MPEG audio decoder and player
* Copyright (C) 2000-2004 Robert Leslie
*
* This program 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.
*
* This program 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
*
* $Id: audio_esd.c,v 1.9 2004/01/23 09:41:31 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <unistd.h>
# include <errno.h>
# include <esd.h>
# include <mad.h>
# include "gettext.h"
# include "audio.h"
# if defined(WORDS_BIGENDIAN)
# define audio_pcm_s16 audio_pcm_s16be
# else
# define audio_pcm_s16 audio_pcm_s16le
# endif
static char const *host;
static int esd;
static audio_pcmfunc_t *audio_pcm;
static
int init(struct audio_init *init)
{
host = init->path;
if (host && *host == 0)
host = 0;
/* test opening a socket */
esd = esd_open_sound(host);
if (esd < 0) {
audio_error = _("esd_open_sound() failed");
return -1;
}
return 0;
}
static
int config(struct audio_config *config)
{
unsigned int bitdepth;
esd_format_t format = ESD_STREAM | ESD_PLAY;
extern char const *argv0;
int result = 0;
bitdepth = config->precision & ~7;
if (bitdepth == 0 || bitdepth > 16)
bitdepth = 16;
switch (config->precision = bitdepth) {
case 8:
audio_pcm = audio_pcm_u8;
format |= ESD_BITS8;
break;
case 16:
audio_pcm = audio_pcm_s16;
format |= ESD_BITS16;
break;
}
format |= (config->channels == 2) ? ESD_STEREO : ESD_MONO;
if (esd_close(esd) < 0) {
audio_error = ":esd_close";
result = -1;
}
esd = esd_play_stream_fallback(format, config->speed, host, argv0);
if (esd < 0 && result == 0) {
audio_error = _("esd_play_stream_fallback() failed");
result = -1;
}
return result;
}
static
int output(unsigned char const *ptr, unsigned int len)
{
while (len) {
int wrote;
wrote = write(esd, ptr, len);
if (wrote == -1) {
if (errno == EINTR)
continue;
else {
audio_error = ":write";
return -1;
}
}
ptr += wrote;
len -= wrote;
}
return 0;
}
static
int play(struct audio_play *play)
{
unsigned char data[MAX_NSAMPLES * 2 * 2];
unsigned int len;
len = audio_pcm(data, play->nsamples, play->samples[0], play->samples[1],
play->mode, play->stats);
return output(data, len);
}
static
int stop(struct audio_stop *stop)
{
return 0;
}
static
int finish(struct audio_finish *finish)
{
if (esd_close(esd) < 0) {
audio_error = ":esd_close";
return -1;
}
return 0;
}
int audio_esd(union audio_control *control)
{
audio_error = 0;
switch (control->command) {
case AUDIO_COMMAND_INIT:
return init(&control->init);
case AUDIO_COMMAND_CONFIG:
return config(&control->config);
case AUDIO_COMMAND_PLAY:
return play(&control->play);
case AUDIO_COMMAND_STOP:
return stop(&control->stop);
case AUDIO_COMMAND_FINISH:
return finish(&control->finish);
}
return 0;
}
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