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/* --------------------------------------------------------------------------*/
/* */
/* get/set the keyboard light level on Apple Mac OS X */
/* Written by Hans-Christoph Steiner <hans@at.or.at> */
/* */
/* Copyright (c) 2008 Free Software Foundation */
/* */
/* 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. */
/* */
/* See file LICENSE for further informations on licensing terms. */
/* */
/* 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, */
/* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */
/* */
/* --------------------------------------------------------------------------*/
#include <mach/mach.h>
#include <IOKit/IOKitLib.h>
#include <CoreFoundation/CoreFoundation.h>
#include <m_pd.h>
#define DEBUG(x)
//#define DEBUG(x) x
#define DEFAULT_DELAYTIME 250
#define BRIGHTNESS_MAX 0xfff
/*------------------------------------------------------------------------------
* CLASS DEF
*/
static t_class *keyboard_light_class;
typedef struct _keyboard_light {
t_object x_obj;
t_float fade_time;
io_service_t io_service;
io_connect_t io_connect;
} t_keyboard_light;
enum {
kGetSensorReadingID = 0, // getSensorReading(int *, int *)
kGetLEDBrightnessID = 1, // getLEDBrightness(int, int *)
kSetLEDBrightnessID = 2, // setLEDBrightness(int, int, int *)
kSetLEDFadeID = 3, // setLEDFade(int, int, int, int *)
// other firmware-related functions
verifyFirmwareID = 4, // verifyFirmware(int *)
getFirmwareVersionID = 5,// getFirmwareVersion(int *)
// other flashing-related functions
// ...
};
/*------------------------------------------------------------------------------
* IMPLEMENTATION
*/
static void keyboard_light_output(t_keyboard_light* x)
{
DEBUG(post("keyboard_light_output"););
kern_return_t kernResult;
uint32_t out_brightness;
if(! x->io_connect) return;
#if !defined(__LP64__)
// Check if Mac OS X 10.5 API is available...
if (IOConnectCallScalarMethod != NULL) {
// ...and use it if it is.
#endif
uint64_t inputCount = 1;
uint64_t inputValues[1] = {0};
uint32_t outputCount = 1;
kernResult = IOConnectCallScalarMethod(x->io_connect,
kGetLEDBrightnessID,
inputValues,
inputCount,
&out_brightness,
&outputCount);
#if !defined(__LP64__)
}
else {
// Otherwise fall back to older API.
IOItemCount scalarInputCount = 1;
IOItemCount scalarOutputCount = 1;
uint32_t in_brightness;
kernResult = IOConnectMethodScalarIScalarO(x->io_connect,
kGetLEDBrightnessID,
scalarInputCount,
scalarOutputCount,
in_brightness,
&out_brightness);
}
#endif
if( kernResult == KERN_SUCCESS)
outlet_float(x->x_obj.ob_outlet, (t_float)out_brightness / BRIGHTNESS_MAX);
else if(kernResult == kIOReturnBusy)
pd_error(x,"[keyboard_light]: device busy");
else
pd_error(x,"[keyboard_light]: could not read device");
}
static void keyboard_light_float(t_keyboard_light* x, t_float f)
{
DEBUG(post("keyboard_light_float"););
kern_return_t kernResult;
t_float brightness;
if(!x->io_connect) return;
brightness = f * BRIGHTNESS_MAX;
if(brightness < 0)
brightness = 0;
else if(brightness > BRIGHTNESS_MAX)
brightness = BRIGHTNESS_MAX;
#if !defined(__LP64__)
// Check if Mac OS X 10.5 API is available...
if (IOConnectCallScalarMethod != NULL) {
// ...and use it if it is.
#endif
uint64_t inputValues[3];
uint32_t inputCount = 3;
uint64_t outputValues[1];
uint32_t outputCount = 1;
inputValues[0] = 0;
inputValues[1] = brightness;
inputValues[2] = x->fade_time;
kernResult = IOConnectCallScalarMethod(x->io_connect,
kSetLEDFadeID,
inputValues,
inputCount,
outputValues,
&outputCount);
#if !defined(__LP64__)
}
else {
// Otherwise fall back to older API.
IOItemCount scalarInputCount = 3;
IOItemCount scalarOutputCount = 1;
SInt32 in_unknown = 0, in_brightness, out_brightness;
in_brightness = brightness;
kernResult = IOConnectMethodScalarIScalarO(x->io_connect,
kSetLEDFadeID,
scalarInputCount,
scalarOutputCount,
in_unknown,
in_brightness,
(SInt32) x->fade_time,
&out_brightness);
}
#endif
if( kernResult != KERN_SUCCESS)
{
if(kernResult == kIOReturnBusy)
pd_error(x,"[keyboard_light]: device busy");
else
pd_error(x,"[keyboard_light]: could not write to device");
}
}
static void keyboard_light_free(t_keyboard_light* x)
{
DEBUG(post("keyboard_light_free"););
}
static void *keyboard_light_new(t_float level, t_float fade_time)
{
DEBUG(post("keyboard_light_new"););
t_keyboard_light *x = (t_keyboard_light *)pd_new(keyboard_light_class);
kern_return_t kernResult;
x->io_service = IOServiceGetMatchingService(kIOMasterPortDefault,
IOServiceMatching("AppleLMUController"));
if(x->io_service)
{
logpost(x, 4, "[keyboard_light]: found AppleLMUController");
}
else
{
error("[keyboard_light]: AppleLMUController not found, trying IOI2CDeviceLMU");
x->io_service = IOServiceGetMatchingService(kIOMasterPortDefault,
IOServiceMatching("IOI2CDeviceLMU"));
if(x->io_service)
{
logpost(x, 4, "[keyboard_light]: found IOI2CDeviceLMU");
}
else
pd_error(x,"[keyboard_light]: no sensor found");
}
kernResult = IOServiceOpen(x->io_service, mach_task_self(), 0, &x->io_connect);
IOObjectRelease(x->io_service);
if (kernResult != KERN_SUCCESS)
{
error("[keyboard_light]: IOServiceOpen(): %d", kernResult);
}
x->fade_time = fade_time;
floatinlet_new(&x->x_obj, &x->fade_time);
outlet_new(&x->x_obj, &s_float);
keyboard_light_float(x, level);
return (x);
}
void keyboard_light_setup(void)
{
keyboard_light_class = class_new(gensym("keyboard_light"),
(t_newmethod)keyboard_light_new,
(t_method)keyboard_light_free,
sizeof(t_keyboard_light),
CLASS_DEFAULT,
A_DEFFLOAT, A_DEFFLOAT, 0);
/* add inlet datatype methods */
class_addbang(keyboard_light_class,(t_method) keyboard_light_output);
class_addfloat(keyboard_light_class,(t_method) keyboard_light_float);
}
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