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/*
Copyright (C) 2001 Jochen Hoenicke
jochen@gnu.org
Copyright (C) 2003 Ian Chiew
ian@snork.net
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/**
* only compile esound AudioIO class if libesd was detected during
* configure
*/
#ifdef HAVE_LIBESD
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <iostream>
#include "audioio.h"
#include "audiosubsys.h"
#include "iomanager.h"
#include "dispatcher.h"
#include <esd.h>
#ifdef __BIG_ENDIAN__
#define _format_bits 17
#else
#define _format_bits 16
#endif
namespace Arts {
class AudioIOESD : public AudioIO, public IONotify {
protected:
int server_fd, read_fd, write_fd;
public:
AudioIOESD();
void setParam(AudioParam param, int& value);
int getParam(AudioParam param);
void notifyIO(int fd, int type);
bool open();
void close();
void run();
int read(void *buffer, int size);
int write(void *buffer, int size);
};
REGISTER_AUDIO_IO(AudioIOESD,"esd","Enlightened Sound Daemon");
}
using namespace std;
using namespace Arts;
AudioIOESD::AudioIOESD()
{
/*
* default parameters
*/
param(samplingRate) = 44100;
paramStr(deviceName) = "null";
param(fragmentSize) = 1024;
param(fragmentCount) = 7;
param(format) = _format_bits;
param(channels) = 2;
param(direction) = 2;
server_fd = -1;
read_fd = -1;
write_fd = -1;
}
bool AudioIOESD::open()
{
int& _channels = param(channels);
int& _direction = param(direction);
int& _samplingRate = param(samplingRate);
int& _format = param(format);
string& _error = paramStr(lastError);
if ((server_fd = esd_open_sound(NULL)) == -1)
{
_error = "Couldn't connect to server";
return false;
}
esd_server_info_t *server_info = esd_get_server_info(server_fd);
if (server_info == NULL)
{
_error = "Unable to query EsounD server";
return false;
}
esd_format_t server_format = server_info->format;
_samplingRate = server_info->rate;
_channels = (server_format & ESD_STEREO) ? 2 : 1;
_format = (server_format & ESD_BITS16) ? _format_bits : 8;
esd_free_server_info(server_info);
if (_direction & directionRead)
{
read_fd = esd_record_stream(server_format, _samplingRate,
NULL, "aRts");
if (read_fd == -1)
{
_error = "Couldn't create read uflow";
return false;
}
}
if (_direction & directionWrite)
{
write_fd = esd_play_stream(server_format, _samplingRate,
NULL, "aRts");
if (write_fd == -1)
{
_error = "Couldn't create write flow";
return false;
}
}
return true;
}
void AudioIOESD::notifyIO(int, int)
{
}
void AudioIOESD::close()
{
if (write_fd != -1)
esd_close(write_fd);
if (read_fd != -1)
esd_close(read_fd);
if (server_fd != -1)
esd_close(server_fd);
}
void AudioIOESD::setParam(AudioParam p, int& value)
{
switch(p)
{
case channels:
case format:
case direction:
case samplingRate:
param(p) = value;
close();
open();
return;
default:
param(p) = value;
return;
}
}
int AudioIOESD::getParam(AudioParam p)
{
switch(p)
{
case selectReadFD:
return read_fd;
case selectWriteFD:
return write_fd;
case canRead:
return ESD_BUF_SIZE;
case canWrite:
return ESD_BUF_SIZE;
// ESD handles are actually socket descriptors, and I know not
// of any portable way to peek at the socket's send or receive
// buffers.
default:
return param(p);
}
}
int AudioIOESD::read(void *buffer, int size)
{
return ::read(read_fd, buffer, size);
}
int AudioIOESD::write(void *buffer, int size)
{
return ::write(write_fd, buffer, size);
}
#endif
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