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/*
* Copyright (C) 2010 Mark Hills <mark@pogo.org.uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2, as published by the Free Software Foundation.
*
* 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 version 2 for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
#include "device.h"
void device_connect_timecoder(struct device_t *dv, struct timecoder_t *tc)
{
dv->timecoder = tc;
}
void device_connect_player(struct device_t *dv, struct player_t *pl)
{
dv->player = pl;
}
/* Return the sample rate of the device in Hz */
unsigned int device_sample_rate(struct device_t *dv)
{
return dv->type->sample_rate(dv);
}
/* Start the device inputting and outputting audio */
int device_start(struct device_t *dv)
{
if(dv->type->start)
return dv->type->start(dv);
else
return 0;
}
/* Stop the device */
int device_stop(struct device_t *dv)
{
if(dv->type->stop)
return dv->type->stop(dv);
else
return 0;
}
/* Clear (destruct) the device. The corresponding constructor is
* specific to each particular audio system. */
void device_clear(struct device_t *dv)
{
dv->type->clear(dv);
}
/* Return file descriptors which should be watched for this device.
* Do not return anything for callback-based audio systems. If this
* function returns any file descriptors, there must be a handle()
* function available.
*
* Returns the number of pollfd filled, or -1 on error. */
ssize_t device_pollfds(struct device_t *dv, struct pollfd *pe, size_t z)
{
if(dv->type->pollfds)
return dv->type->pollfds(dv, pe, z);
else
return 0;
}
/* Handle any available input or output on the device. This function
* is called when there is activity on any fd given by pollfds() for
* any devices in the system. */
int device_handle(struct device_t *dv)
{
if(dv->type->handle)
return dv->type->handle(dv);
else
return 0;
}
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