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//
// Copyright(C) 2005-2014 Simon Howard
//
// 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.
//
// DESCRIPTION:
// PC speaker interface.
//
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "pcsound.h"
#include "pcsound_internal.h"
#ifdef HAVE_DEV_ISA_SPKRIO_H
#define HAVE_BSD_SPEAKER
#endif
#ifdef HAVE_DEV_SPEAKER_SPEAKER_H
#define HAVE_BSD_SPEAKER
#endif
#ifdef _WIN32
extern pcsound_driver_t pcsound_win32_driver;
#endif
#ifdef HAVE_BSD_SPEAKER
extern pcsound_driver_t pcsound_bsd_driver;
#endif
#ifdef HAVE_LINUX_KD_H
extern pcsound_driver_t pcsound_linux_driver;
#endif
extern pcsound_driver_t pcsound_sdl_driver;
static pcsound_driver_t *drivers[] =
{
#ifdef HAVE_LINUX_KD_H
&pcsound_linux_driver,
#endif
#ifdef HAVE_BSD_SPEAKER
&pcsound_bsd_driver,
#endif
#ifdef _WIN32
&pcsound_win32_driver,
#endif
&pcsound_sdl_driver,
NULL,
};
static pcsound_driver_t *pcsound_driver = NULL;
int pcsound_sample_rate;
void PCSound_SetSampleRate(int rate)
{
pcsound_sample_rate = rate;
}
int PCSound_Init(pcsound_callback_func callback_func)
{
char *driver_name;
int i;
if (pcsound_driver != NULL)
{
return 1;
}
// Check if the environment variable is set
driver_name = getenv("PCSOUND_DRIVER");
if (driver_name != NULL)
{
for (i=0; drivers[i] != NULL; ++i)
{
if (!strcmp(drivers[i]->name, driver_name))
{
// Found the driver!
if (drivers[i]->init_func(callback_func))
{
pcsound_driver = drivers[i];
}
else
{
printf("Failed to initialize PC sound driver: %s\n",
drivers[i]->name);
break;
}
}
}
}
else
{
// Try all drivers until we find a working one
for (i=0; drivers[i] != NULL; ++i)
{
if (drivers[i]->init_func(callback_func))
{
pcsound_driver = drivers[i];
break;
}
}
}
if (pcsound_driver != NULL)
{
printf("Using PC sound driver: %s\n", pcsound_driver->name);
return 1;
}
else
{
printf("Failed to find a working PC sound driver.\n");
return 0;
}
}
void PCSound_Shutdown(void)
{
pcsound_driver->shutdown_func();
pcsound_driver = NULL;
}
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