80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
|
/* ScummVM - Graphic Adventure Engine
|
||
|
|
*
|
||
|
|
* ScummVM is the legal property of its developers, whose names
|
||
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
||
|
|
* file distributed with this source distribution.
|
||
|
|
*
|
||
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||
|
|
*
|
||
|
|
* $URL$
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* GP2X Wiz: Hardware Stuff.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "backends/platform/gp2xwiz/gp2xwiz-hw.h"
|
||
|
|
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <signal.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <sys/mman.h>
|
||
|
|
#include <sys/ioctl.h>
|
||
|
|
#include <sys/soundcard.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
namespace WIZ_HW {
|
||
|
|
|
||
|
|
int volumeLevel = VOLUME_INITIAL;
|
||
|
|
|
||
|
|
void deviceInit() {
|
||
|
|
}
|
||
|
|
|
||
|
|
void deviceDeinit() {
|
||
|
|
}
|
||
|
|
|
||
|
|
void mixerMoveVolume( int direction )
|
||
|
|
{
|
||
|
|
if( volumeLevel <= 10 )
|
||
|
|
{
|
||
|
|
if( direction == VOLUME_UP ) volumeLevel += VOLUME_CHANGE_RATE/2;
|
||
|
|
if( direction == VOLUME_DOWN ) volumeLevel -= VOLUME_CHANGE_RATE/2;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if( direction == VOLUME_UP ) volumeLevel += VOLUME_CHANGE_RATE;
|
||
|
|
if( direction == VOLUME_DOWN ) volumeLevel -= VOLUME_CHANGE_RATE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( volumeLevel < VOLUME_MIN ) volumeLevel = VOLUME_MIN;
|
||
|
|
if( volumeLevel > VOLUME_MAX ) volumeLevel = VOLUME_MAX;
|
||
|
|
|
||
|
|
unsigned long soundDev = open("/dev/mixer", O_RDWR);
|
||
|
|
|
||
|
|
if(soundDev)
|
||
|
|
{
|
||
|
|
int vol = ((volumeLevel << 8) | volumeLevel);
|
||
|
|
ioctl(soundDev, SOUND_MIXER_WRITE_PCM, &vol);
|
||
|
|
close(soundDev);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} /* namespace WIZ_HW */
|