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author | John Willis | 2009-06-04 08:30:31 +0000 |
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committer | John Willis | 2009-06-04 08:30:31 +0000 |
commit | 929ef3e4a8eaf83e5fda75fb1047feb6647e7799 (patch) | |
tree | 4c9cf9ce363eb977371e3be19ae88b84b6f207a1 /backends/platform/gp2xwiz/gp2xwiz-hw.cpp | |
parent | 70effa46e55100630df3b902918c75e77d505188 (diff) | |
download | scummvm-rg350-929ef3e4a8eaf83e5fda75fb1047feb6647e7799.tar.gz scummvm-rg350-929ef3e4a8eaf83e5fda75fb1047feb6647e7799.tar.bz2 scummvm-rg350-929ef3e4a8eaf83e5fda75fb1047feb6647e7799.zip |
Initial import of the GP2XWiz backend (based on the GP2X and SDL backends). Includes configure changes and one #ifdef to SDL backend. Also updates NEWS.
svn-id: r41156
Diffstat (limited to 'backends/platform/gp2xwiz/gp2xwiz-hw.cpp')
-rw-r--r-- | backends/platform/gp2xwiz/gp2xwiz-hw.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/backends/platform/gp2xwiz/gp2xwiz-hw.cpp b/backends/platform/gp2xwiz/gp2xwiz-hw.cpp new file mode 100644 index 0000000000..7133614a3e --- /dev/null +++ b/backends/platform/gp2xwiz/gp2xwiz-hw.cpp @@ -0,0 +1,79 @@ +/* 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 */ |