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/* 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.
*
*/
/*
* GP2X Wiz: Hardware Stuff.
*
*/
// Disable symbol overrides so that we can use system headers.
#define FORBIDDEN_SYMBOL_ALLOW_ALL
#include "backends/platform/gph/gph-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 {
enum {
VOLUME_NOCHG = 0,
VOLUME_DOWN = 1,
VOLUME_UP = 2,
VOLUME_CHANGE_RATE = 8,
VOLUME_MIN = 0,
VOLUME_INITIAL = 60,
VOLUME_MAX = 100
};
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 */
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