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annotate src/joystick/android/SDL_sysjoystick.c @ 5284:96a22141cf86 tip

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Changed output directory of Universal libSDL.a for iOS to respect build configurations. Template generator was updated to reflect these changes as well.
author Eric Wing <ewing . public |-at-| gmail . com>
date Sat, 12 Feb 2011 21:52:30 -0800
parents b530ef003506
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2011 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #include "SDL_config.h"
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24
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25 #ifdef SDL_JOYSTICK_ANDROID
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26
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27 /* This is the system specific header for the SDL joystick API */
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28 #include <stdio.h> /* For the definition of NULL */
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29
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30 #include "SDL_error.h"
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31 #include "SDL_events.h"
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32 #include "SDL_joystick.h"
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33 #include "../SDL_sysjoystick.h"
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34 #include "../SDL_joystick_c.h"
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35 #include "../../core/android/SDL_android.h"
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36
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37 static const char *accelerometerName = "Android accelerometer";
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38
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39 /* Function to scan the system for joysticks.
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40 * This function should set SDL_numjoysticks to the number of available
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41 * joysticks. Joystick 0 should be the system default joystick.
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42 * It should return 0, or -1 on an unrecoverable fatal error.
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43 */
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44 int
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45 SDL_SYS_JoystickInit(void)
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46 {
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47 SDL_numjoysticks = 1;
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48
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49 return (1);
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50 }
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51
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52 /* Function to get the device-dependent name of a joystick */
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53 const char *
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54 SDL_SYS_JoystickName(int index)
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55 {
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56 if (index == 0) {
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57 return accelerometerName;
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58 } else {
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59 SDL_SetError("No joystick available with that index");
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60 return (NULL);
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61 }
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62 }
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63
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64 /* Function to open a joystick for use.
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65 The joystick to open is specified by the index field of the joystick.
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66 This should fill the nbuttons and naxes fields of the joystick structure.
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67 It returns 0, or -1 if there is an error.
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68 */
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69 int
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70 SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
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71 {
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72 joystick->nbuttons = 0;
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73 joystick->nhats = 0;
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74 joystick->nballs = 0;
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75 joystick->naxes = 3;
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76 joystick->name = accelerometerName;
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77 return 0;
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78 }
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79
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80
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81 /* Function to update the state of a joystick - called as a device poll.
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82 * This function shouldn't update the joystick structure directly,
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83 * but instead should call SDL_PrivateJoystick*() to deliver events
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84 * and update joystick device state.
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85 */
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86 void
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87 SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
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88 {
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89 int i;
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90 float values[3];
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91
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92 Android_JNI_GetAccelerometerValues(values);
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93
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94 for ( i = 0; i < 3; i++ ) {
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95 SDL_PrivateJoystickAxis(joystick, i, values[i]);
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96 }
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97 }
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98
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99 /* Function to close a joystick after use */
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100 void
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101 SDL_SYS_JoystickClose(SDL_Joystick * joystick)
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102 {
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103 }
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104
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105 /* Function to perform any system-specific joystick related cleanup */
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106 void
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107 SDL_SYS_JoystickQuit(void)
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108 {
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109 }
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110
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111 #endif /* SDL_JOYSTICK_NDS */
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112
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113 /* vi: set ts=4 sw=4 expandtab: */