src/tuio.c

   1 /*
   2  * Copyright (c) 2009 Ryan Huffman
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  20  * THE SOFTWARE.
  21  *
  22  * Authors:
  23  *      Ryan Huffman (ryanhuffman@gmail.com)
  24  */
  25
  26 #include <sys/stat.h>
  27 #include <unistd.h>
  28 #include <errno.h>
  29 #include <fcntl.h>
  30
  31 #include <xorg/xf86.h>
  32 #include <xorg-server.h>
  33 #include <xf86Xinput.h>
  34 #include <exevents.h>
  35 #include <xorgVersion.h>
  36 #include <X11/extensions/XIproto.h>
  37 #include <X11/extensions/XInput2.h>
  38 #include <xf86_OSlib.h>
  39 #include <lo/lo.h>
  40
  41 #include "tuio.h"
  42
  43 #ifdef HAVE_CONFIG_H
  44 #include "config.h"
  45 #endif
  46
  47 /* Module Functions */
  48 static pointer
  49 TuioPlug(pointer, pointer, int *, int *);
  50
  51 static void
  52 TuioUnplug(pointer);
  53
  54 /* Driver Function */
  55 static InputInfoPtr
  56 TuioPreInit(InputDriverPtr, IDevPtr, int);
  57
  58 static void
  59 TuioUnInit(InputDriverPtr, InputInfoPtr, int);
  60
  61 static void
  62 TuioReadInput(InputInfoPtr);
  63
  64 static int
  65 TuioControl(DeviceIntPtr, int);
  66
  67
  68 static XF86ModuleVersionInfo TuioVersionRec =
  69 {
  70     "tuio",
  71     MODULEVENDORSTRING,
  72     MODINFOSTRING1,
  73     MODINFOSTRING2,
  74     XORG_VERSION_CURRENT,
  75     PACKAGE_VERSION_MAJOR, PACKAGE_VERSION_MINOR, PACKAGE_VERSION_PATCHLEVEL,
  76     ABI_CLASS_XINPUT,
  77     ABI_XINPUT_VERSION,
  78     MOD_CLASS_XINPUT,
  79     {0, 0, 0, 0}
  80 };
  81
  82 _X_EXPORT InputDriverRec TUIO =
  83 {
  84     1,
  85     "tuio",
  86     NULL,
  87     TuioPreInit,
  88     TuioUnInit,
  89     NULL,
  90     0
  91 };
  92
  93 _X_EXPORT XF86ModuleData tuioModuleData =
  94 {
  95     &TuioVersionRec,
  96     TuioPlug,
  97     TuioUnplug
  98 };
  99
 100 static pointer
 101 TuioPlug(pointer        module,
 102          pointer        options,
 103          int            *errmaj,
 104          int            *errmin)
 105 {
 106     return module;
 107 }
 108
 109 static void
 110 TuioUnplug(pointer      p)
 111 {
 112 }
 113
 114 /**
 115  * TODO:
 116  *  - Parse configuration options
 117  *  - Setup internal data
 118  */
 119 static InputInfoPtr
 120 TuioPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
 121 {
 122     InputInfoPtr  pInfo;
 123     TuioDevicePtr pTuio;
 124     const char *device;
 125
 126     if (!(pInfo = xf86AllocateInput(drv, 0)))
 127         return NULL;
 128
 129     pTuio = xcalloc(1, sizeof(TuioDeviceRec));
 130     if (!pTuio) {
 131             pInfo->private = NULL;
 132             xf86DeleteInput(pInfo, 0);
 133             return NULL;
 134     }
 135
 136     pInfo->private = pTuio;
 137
 138     pInfo->name = xstrdup(dev->identifier);
 139     pInfo->flags = 0;
 140     pInfo->type_name = XI_TOUCHSCREEN;
 141     pInfo->conf_idev = dev;
 142     pInfo->read_input = TuioReadInput;
 143     pInfo->switch_mode = NULL;
 144     pInfo->device_control = TuioControl;
 145
 146     xf86CollectInputOptions(pInfo, NULL, NULL);
 147     xf86ProcessCommonOptions(pInfo, pInfo->options);
 148
 149     pInfo->flags |= XI86_OPEN_ON_INIT;
 150     pInfo->flags |= XI86_CONFIGURED;
 151
 152     return pInfo;
 153 }
 154
 155 static void
 156 TuioUnInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags)
 157 {
 158     TuioDevicePtr pTuio = pInfo->private;
 159
 160     xfree(pTuio);
 161     xf86DeleteInput(pInfo, 0);
 162 }
 163
 164 static void
 165 TuioReadInput(InputInfoPtr pInfo)
 166 {
 167 }
 168
 169 static int
 170 TuioControl(DeviceIntPtr device, int what)
 171 {
 172     return 1;
 173 }
 174