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

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 */