modules/control/unimotion.c

   1  /*
   2  *  UniMotion - Unified Motion detection for Apple portables.
   3  *
   4  *  Copyright (c) 2006 Lincoln Ramsay. All rights reserved.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public
   8  *  License version 2.1 as published by the Free Software Foundation.
   9  *
  10  *  This library is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *  Lesser General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Lesser General Public
  16  *  License along with this library; if not, write to the Free Software
  17  *  Foundation Inc. 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
  18  */
  19
  20 /*
  21  * HISTORY of Motion
  22  * Written by Christian Klein
  23  * Modified for iBook compatibility by Pall Thayer
  24  * Modified for Hi Res Powerbook compatibility by Pall Thayer
  25  * Modified for MacBook Pro compatibility by Randy Green
  26  * Disparate forks unified into UniMotion by Lincoln Ramsay
  27  */
  28
  29 // This license applies to the portions created by Cristian Klein.
  30 /* motion.c
  31  *
  32  * a little program to display the coords returned by
  33  * the powerbook motion sensor
  34  *
  35  * A fine piece of c0de, brought to you by
  36  *
  37  *               ---===---
  38  * *** teenage mutant ninja hero coders ***
  39  *               ---===---
  40  *
  41  * All of the software included is copyrighted by Christian Klein <chris@5711.org>.
  42  *
  43  * Copyright 2005 Christian Klein. All rights reserved.
  44  *
  45  * Redistribution and use in source and binary forms, with or without
  46  * modification, are permitted provided that the following conditions
  47  * are met:
  48  * 1. Redistributions of source code must retain the above copyright
  49  *    notice, this list of conditions and the following disclaimer.
  50  * 2. Redistributions in binary form must reproduce the above copyright
  51  *    notice, this list of conditions and the following disclaimer in the
  52  *    documentation and/or other materials provided with the distribution.
  53  * 3. The name of the author must not be used to endorse or promote
  54  *    products derived from this software
  55  *    without specific prior written permission.
  56  *
  57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  67  * SUCH DAMAGE.
  68  *
  69  */
  70
  71 #ifdef __APPLE__
  72 #include "TargetConditionals.h"
  73 #if !TARGET_OS_IPHONE
  74 #define HAVE_MACOS_UNIMOTION
  75 #endif
  76 #endif
  77
  78 #ifdef HAVE_MACOS_UNIMOTION
  79
  80 #include "unimotion.h"
  81 #include <IOKit/IOKitLib.h>
  82 #include <CoreFoundation/CoreFoundation.h>
  83 #include <stdint.h>
  84
  85 enum data_type {
  86     PB_IB,
  87     MBP
  88 };
  89
  90 struct pb_ib_data {
  91     int8_t x;
  92     int8_t y;
  93     int8_t z;
  94     int8_t pad[57];
  95 };
  96
  97 struct mbp_data {
  98     int16_t x;
  99     int16_t y;
 100     int16_t z;
 101     int8_t pad[34];
 102 };
 103
 104 union motion_data {
 105     struct pb_ib_data pb_ib;
 106     struct mbp_data mbp;
 107 };
 108
 109
 110 static int set_values(int type, int *kernFunc, const char **servMatch, int *dataType)
 111 {
 112     switch ( type ) {
 113         case powerbook:
 114             *kernFunc = 21;
 115             *servMatch = "IOI2CMotionSensor";
 116             *dataType = PB_IB;
 117             break;
 118         case ibook:
 119             *kernFunc = 21;
 120             *servMatch = "IOI2CMotionSensor";
 121             *dataType = PB_IB;
 122             break;
 123         case highrespb:
 124             *kernFunc = 21;
 125             *servMatch = "PMUMotionSensor";
 126             *dataType = PB_IB;
 127             break;
 128         case macbookpro:
 129             *kernFunc = 5;
 130             *servMatch = "SMCMotionSensor";
 131             *dataType = MBP;
 132             break;
 133         default:
 134             return 0;
 135     }
 136
 137     return 1;
 138 }
 139
 140 static int probe_sms(int kernFunc, const char *servMatch, int dataType, void *data)
 141 {
 142     kern_return_t result;
 143     mach_port_t masterPort;
 144     io_iterator_t iterator;
 145     io_object_t aDevice;
 146     io_connect_t  dataPort;
 147
 148     size_t structureInputSize;
 149     size_t structureOutputSize;
 150
 151     union motion_data inputStructure;
 152     union motion_data *outputStructure;
 153
 154     outputStructure = (union motion_data *)data;
 155
 156     result = IOMasterPort(MACH_PORT_NULL, &masterPort);
 157
 158     CFMutableDictionaryRef matchingDictionary = IOServiceMatching(servMatch);
 159
 160     result = IOServiceGetMatchingServices(masterPort, matchingDictionary, &iterator);
 161
 162     if (result != KERN_SUCCESS) {
 163         //fputs("IOServiceGetMatchingServices returned error.\n", stderr);
 164         return 0;
 165     }
 166
 167     aDevice = IOIteratorNext(iterator);
 168     IOObjectRelease(iterator);
 169
 170     if (aDevice == 0) {
 171         //fputs("No motion sensor available\n", stderr);
 172         return 0;
 173     }
 174
 175     result = IOServiceOpen(aDevice, mach_task_self(), 0, &dataPort);
 176     IOObjectRelease(aDevice);
 177
 178     if (result != KERN_SUCCESS) {
 179         //fputs("Could not open motion sensor device\n", stderr);
 180         return 0;
 181     }
 182
 183     switch ( dataType ) {
 184         case PB_IB:
 185             structureInputSize = sizeof(struct pb_ib_data);
 186             structureOutputSize = sizeof(struct pb_ib_data);
 187             break;
 188         case MBP:
 189             structureInputSize = sizeof(struct mbp_data);
 190             structureOutputSize = sizeof(struct mbp_data);
 191             break;
 192         default:
 193             return 0;
 194     }
 195
 196     memset(&inputStructure, 0, sizeof(union motion_data));
 197     memset(outputStructure, 0, sizeof(union motion_data));
 198
 199     result = IOConnectCallStructMethod(dataPort, kernFunc, &inputStructure,
 200                 structureInputSize, outputStructure, &structureOutputSize );
 201
 202     IOServiceClose(dataPort);
 203
 204     if (result != KERN_SUCCESS) {
 205         //puts("no coords");
 206         return 0;
 207     }
 208     return 1;
 209 }
 210
 211 int detect_sms()
 212 {
 213     int kernFunc;
 214     const char *servMatch;
 215     int dataType;
 216     union motion_data data;
 217     int i;
 218
 219     for ( i = 1; ; i++ ) {
 220         if ( !set_values(i, &kernFunc, &servMatch, &dataType) )
 221             break;
 222         if ( probe_sms(kernFunc, servMatch, dataType, &data) )
 223             return i;
 224     }
 225
 226     return unknown;
 227 }
 228
 229 int read_sms_raw(int type, int *x, int *y, int *z)
 230 {
 231     int kernFunc;
 232     const char *servMatch;
 233     int dataType;
 234     union motion_data data;
 235
 236     if ( !set_values(type, &kernFunc, &servMatch, &dataType) )
 237         return 0;
 238     if ( probe_sms(kernFunc, servMatch, dataType, &data) ) {
 239         switch ( dataType ) {
 240             case PB_IB:
 241                 if ( x ) *x = data.pb_ib.x;
 242                 if ( y ) *y = data.pb_ib.y;
 243                 if ( z ) *z = data.pb_ib.z;
 244                 break;
 245             case MBP:
 246                 if ( x ) *x = data.mbp.x;
 247                 if ( y ) *y = data.mbp.y;
 248                 if ( z ) *z = data.mbp.z;
 249                 break;
 250             default:
 251                 return 0;
 252         }
 253         return 1;
 254     }
 255     return 0;
 256 }
 257
 258 int read_sms(int type, int *x, int *y, int *z)
 259 {
 260     int _x, _y, _z;
 261     int xoff, yoff, zoff;
 262     Boolean ok;
 263     int ret;
 264
 265     ret = read_sms_raw(type, &_x, &_y, &_z);
 266     if ( !ret )
 267         return 0;
 268
 269     static CFStringRef app = CFSTR("com.ramsayl.UniMotion");
 270     static CFStringRef xoffstr = CFSTR("x_offset");
 271     static CFStringRef yoffstr = CFSTR("y_offset");
 272     static CFStringRef zoffstr = CFSTR("z_offset");
 273     xoff = CFPreferencesGetAppIntegerValue(xoffstr, app, &ok);
 274     if ( ok ) _x += xoff;
 275     yoff = CFPreferencesGetAppIntegerValue(yoffstr, app, &ok);
 276     if ( ok ) _y += yoff;
 277     zoff = CFPreferencesGetAppIntegerValue(zoffstr, app, &ok);
 278     if ( ok ) _z += zoff;
 279
 280     *x = _x;
 281     *y = _y;
 282     *z = _z;
 283
 284     return ret;
 285 }
 286
 287 int read_sms_real(int type, double *x, double *y, double *z)
 288 {
 289     int _x, _y, _z;
 290     int xscale, yscale, zscale;
 291     int ret;
 292     Boolean ok;
 293
 294     ret = read_sms_raw(type, &_x, &_y, &_z);
 295     if ( !ret )
 296         return 0;
 297
 298     static CFStringRef app = CFSTR("com.ramsayl.UniMotion");
 299     static CFStringRef xscalestr = CFSTR("x_scale");
 300     static CFStringRef yscalestr = CFSTR("y_scale");
 301     static CFStringRef zscalestr = CFSTR("z_scale");
 302     xscale = CFPreferencesGetAppIntegerValue(xscalestr, app, &ok);
 303     if ( !ok ) return 0;
 304     yscale = CFPreferencesGetAppIntegerValue(yscalestr, app, &ok);
 305     if ( !ok ) return 0;
 306     zscale = CFPreferencesGetAppIntegerValue(zscalestr, app, &ok);
 307     if ( !ok ) return 0;
 308
 309     *x = _x / (double)xscale;
 310     *y = _y / (double)yscale;
 311     *z = _z / (double)zscale;
 312
 313     return 1;
 314 }
 315
 316 #endif