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/*
TiMidity++ -- MIDI to WAVE converter and player
Copyright (C) 1999-2002 Masanao Izumo <mo@goice.co.jp>
Copyright (C) 1995 Tuukka Toivonen <tt@cgs.fi>
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
esd_a.c by Avatar <avatar@deva.net>
based on linux_a.c
Functions to play sound through EsounD
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <dlfcn.h>
#ifndef NO_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#include <esd.h>
#include "timidity.h"
#include "common.h"
#include "output.h"
#include "controls.h"
#include "timer.h"
#include "instrum.h"
#include "playmidi.h"
#include "miditrace.h"
static int open_output(void); /* 0=success, 1=warning, -1=fatal error */
static void close_output(void);
static int output_data(char *buf, int32 nbytes);
static int acntl(int request, void *arg);
static int detect(void);
/* export the playback mode */
#define dpm esd_play_mode
PlayMode dpm = {
DEFAULT_RATE,
PE_16BIT|PE_SIGNED,
PF_PCM_STREAM/*|PF_CAN_TRACE*/,
-1,
{0}, /* default: get all the buffer fragments you can */
"Enlightened sound daemon", 'e',
"/dev/dsp",
open_output,
close_output,
output_data,
acntl,
detect
};
static int try_open(void)
{
int fd, tmp, i;
int include_enc, exclude_enc;
esd_format_t esdformat;
include_enc = 0;
exclude_enc = PE_ULAW|PE_ALAW|PE_BYTESWAP; /* They can't mean these */
if(dpm.encoding & PE_16BIT)
include_enc |= PE_SIGNED;
else
exclude_enc |= PE_SIGNED;
dpm.encoding = validate_encoding(dpm.encoding, include_enc, exclude_enc);
/* Open the audio device */
esdformat = (dpm.encoding & PE_16BIT) ? ESD_BITS16 : ESD_BITS8;
esdformat |= (dpm.encoding & PE_MONO) ? ESD_MONO : ESD_STEREO;
return esd_play_stream_fallback(esdformat,dpm.rate,NULL,"timidity");
}
static int detect(void)
{
int fd;
/* FIXME: do we need to set this? */
/* setenv("ESD_NO_SPAWN", "1", 0); */
fd = try_open();
if (fd < 0)
return 0;
close(fd);
return 1; /* found */
}
/*************************************************************************/
/* We currently only honor the PE_MONO bit, and the sample rate. */
static int open_output(void)
{
int fd;
fd = try_open();
if(fd < 0)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: %s",
dpm.name, strerror(errno));
return -1;
}
dpm.fd = fd;
return 0;
}
static int output_data(char *buf, int32 nbytes)
{
int n;
// write(1, buf, nbytes);return 0;
while(nbytes > 0)
{
if((n = write(dpm.fd, buf, nbytes)) == -1)
{
ctl->cmsg(CMSG_WARNING, VERB_VERBOSE,
"%s: %s", dpm.name, strerror(errno));
if(errno == EWOULDBLOCK)
{
/* It is possible to come here because of bug of the
* sound driver.
*/
continue;
}
return -1;
}
buf += n;
nbytes -= n;
}
return 0;
}
static void close_output(void)
{
if(dpm.fd == -1)
return;
close(dpm.fd);
dpm.fd = -1;
}
static int acntl(int request, void *arg)
{
switch(request)
{
case PM_REQ_DISCARD:
esd_audio_flush();
return 0;
case PM_REQ_RATE: {
/* not implemented yet */
break;
}
}
return -1;
}
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