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annotate ds.c @ 8:dec5fe6cd0d0

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Open the uinput device in write-only, and display every error.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 18 Aug 2015 02:09:15 +0100
parents 6aa40a25de22
children
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e70ea46d6073 Initial import from http://wouhanegaine.free.fr/dev/DSPad02b_neo07.zip
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1 #include "ds.h"
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2 #include "uinput.h"
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3 #include <assert.h>
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4 #include <stdint.h>
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5 #include <string.h>
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8 #include <stdio.h>
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11 #define maybe_do_uinput(button, uinput_button) \
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12 do { \
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13 if (!previous.button && ds->button) \
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14 do_uinput(uinput_fd, uinput_button, 1, EV_KEY); \
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15 else if (previous.button && !ds->button) \
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16 do_uinput(uinput_fd, uinput_button, 0, EV_KEY); \
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17 } while(0)
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20 /*
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21 Throws events according to ds keys status
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22 */
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23 void ds_process_evt(ds_t* ds, int uinput_fd){
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25 static ds_t previous;
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27 assert(8 == sizeof(ds_t));
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29 /* BUTTONS: */
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30 maybe_do_uinput(a, BTN_A);
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31 maybe_do_uinput(b, BTN_B);
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32 maybe_do_uinput(x, BTN_X);
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33 maybe_do_uinput(y, BTN_Y);
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34 maybe_do_uinput(l, BTN_TL);
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35 maybe_do_uinput(r, BTN_TR);
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36 maybe_do_uinput(zl, BTN_TL2);
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37 maybe_do_uinput(zr, BTN_TR2);
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38 maybe_do_uinput(start, BTN_START);
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39 maybe_do_uinput(select, BTN_SELECT);
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40 maybe_do_uinput(up, BTN_DPAD_UP);
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41 maybe_do_uinput(down, BTN_DPAD_DOWN);
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42 maybe_do_uinput(left, BTN_DPAD_LEFT);
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43 maybe_do_uinput(right, BTN_DPAD_RIGHT);
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45 /* DIRECTIONS */
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47 if(previous.pad.x != ds->pad.x)
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48 do_uinput(uinput_fd, ABS_X, ds->pad.x, EV_ABS);
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49
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50 if(previous.pad.y != ds->pad.y)
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51 do_uinput(uinput_fd, ABS_Y, ds->pad.y, EV_ABS);
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53 if(previous.cpad.x != ds->cpad.x)
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54 do_uinput(uinput_fd, ABS_RX, ds->cpad.x, EV_ABS);
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56 if(previous.cpad.y != ds->cpad.y)
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57 do_uinput(uinput_fd, ABS_RY, ds->cpad.y, EV_ABS);
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58
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59 flush_uinput(uinput_fd);
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60
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61 memcpy(&previous, ds, sizeof(ds_t));
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63 return;
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64 }