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Diffstat (limited to 'src/sys/macosx/volume-macosx.c')
-rw-r--r--src/sys/macosx/volume-macosx.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/src/sys/macosx/volume-macosx.c b/src/sys/macosx/volume-macosx.c
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+++ b/src/sys/macosx/volume-macosx.c
@@ -0,0 +1,119 @@
+/*
+ * Schism Tracker - a cross-platform Impulse Tracker clone
+ * copyright (c) 2003-2005 Storlek <storlek@rigelseven.com>
+ * copyright (c) 2005-2008 Mrs. Brisby <mrs.brisby@nimh.org>
+ * copyright (c) 2009 Storlek & Mrs. Brisby
+ * copyright (c) 2010-2012 Storlek
+ * URL: http://schismtracker.org/
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "headers.h"
+
+#include "util.h"
+
+#ifdef MACOSX
+
+#include <CoreServices/CoreServices.h>
+#include <CoreAudio/AudioHardware.h>
+
+int macosx_volume_get_max(void);
+int macosx_volume_get_max(void)
+{
+ return 65535;
+}
+
+void macosx_volume_read(int *left, int *right);
+void macosx_volume_read(int *left, int *right)
+{
+ UInt32 size;
+ AudioDeviceID od;
+ OSStatus e;
+ UInt32 ch[2];
+ Float32 fl[2];
+ int i;
+
+ if (left) *left = 0;
+ if (right) *right = 0;
+
+ size=sizeof(od);
+ e = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice,
+ &size, &od);
+ if (e != 0) return;
+
+ size=sizeof(ch);
+ e = AudioDeviceGetProperty(od,
+ 0, /* QA1016 says "0" is master channel */
+ false,
+ kAudioDevicePropertyPreferredChannelsForStereo,
+ &size,
+ &ch);
+ if (e != 0) return;
+
+ for (i = 0; i < 2; i++) {
+ size = sizeof(Float32);
+ e = AudioDeviceGetProperty(od, /* device */
+ ch[i], /* preferred stereo channel */
+ false, /* output device */
+ kAudioDevicePropertyVolumeScalar,
+ &size,
+ &fl[i]);
+ if (e != 0) return;
+ }
+ if (left) *left = fl[0] * 65536.0f;
+ if (right) *right = fl[1] * 65536.0f;
+}
+
+void macosx_volume_write(int left, int right);
+void macosx_volume_write(int left, int right)
+{
+ UInt32 size;
+ AudioDeviceID od;
+ OSStatus e;
+ UInt32 ch[2];
+ Float32 fl[2];
+ int i;
+
+ size=sizeof(od);
+ e = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice,
+ &size, &od);
+ if (e != 0) return;
+
+ size=sizeof(ch);
+ e = AudioDeviceGetProperty(od,
+ 0, /* QA1016 says "0" is master channel */
+ false,
+ kAudioDevicePropertyPreferredChannelsForStereo,
+ &size,
+ &ch);
+ if (e != 0) return;
+
+ fl[0] = ((float)left) / 65536.0f;
+ fl[1] = ((float)right) / 65536.0f;
+
+ for (i = 0; i < 2; i++) {
+ e = AudioDeviceSetProperty(od, /* device */
+ NULL, /* no timestamp */
+ ch[i], /* preferred stereo channel */
+ false, /* output device */
+ kAudioDevicePropertyVolumeScalar,
+ sizeof(Float32),
+ &fl[i]);
+ if (e != 0) return;
+ }
+}
+
+#endif
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