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annotate src/video/fbcon/SDL_fbelo.c @ 2185:2032348afed1

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This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is available and to keep people form having to install yet another library I have added the essential parts of Xmu in src/video/extensions/XmuStdCmap and an include file in src/video/extensions. The support makes use of standard X11 mechanisms to create color maps and make sure that an application uses the same color map for each window/visual combination. This should make it possible for gamma support to be implemented based on a single color map per application. Hurm... it looks like "make indent" modified a few extra files. Those are getting committed too.
author Bob Pendleton <bob@pendleton.com>
date Thu, 12 Jul 2007 20:00:50 +0000
parents c121d94672cb
children e27bdcc80744
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 #include "SDL_config.h"
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23
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24 #include <unistd.h>
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25 #include <sys/time.h>
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26 #include <ctype.h>
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27
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28 #include "SDL_stdinc.h"
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29 #include "SDL_fbvideo.h"
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30 #include "SDL_fbelo.h"
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31
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32 /*
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33 calibration default values
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34 values are read from the following environment variables:
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35
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36 SDL_ELO_MIN_X
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37 SDL_ELO_MAX_X
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38 SDL_ELO_MIN_Y
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39 SDL_ELO_MAX_Y
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40 */
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41
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42 static int ELO_MIN_X = 400;
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43 static int ELO_MAX_X = 3670;
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44 static int ELO_MIN_Y = 500;
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45 static int ELO_MAX_Y = 3540;
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46
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47 #define ELO_SNAP_SIZE 6
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48 #define ELO_TOUCH_BYTE 'T'
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49 #define ELO_ID 'I'
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50 #define ELO_MODE 'M'
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51 #define ELO_PARAMETER 'P'
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52 #define ELO_REPORT 'B'
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53 #define ELO_ACK 'A'
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54
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55 #define ELO_INIT_CHECKSUM 0xAA
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56
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57 #define ELO_BTN_PRESS 0x01
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58 #define ELO_STREAM 0x02
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59 #define ELO_BTN_RELEASE 0x04
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60
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61 #define ELO_TOUCH_MODE 0x01
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62 #define ELO_STREAM_MODE 0x02
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63 #define ELO_UNTOUCH_MODE 0x04
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64 #define ELO_RANGE_CHECK_MODE 0x40
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65 #define ELO_TRIM_MODE 0x02
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66 #define ELO_CALIB_MODE 0x04
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67 #define ELO_SCALING_MODE 0x08
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68 #define ELO_TRACKING_MODE 0x40
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69
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70 #define ELO_SERIAL_MASK 0xF8
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71
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72 #define ELO_SERIAL_IO '0'
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73
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74 #define ELO_MAX_TRIALS 3
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75 #define ELO_MAX_WAIT 100000
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76 #define ELO_UNTOUCH_DELAY 5
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77 #define ELO_REPORT_DELAY 1
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78
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79 /* eloParsePacket
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80 */
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81 int
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82 eloParsePacket(unsigned char *mousebuf, int *dx, int *dy, int *button_state)
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83 {
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84 static int elo_button = 0;
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85 static int last_x = 0;
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86 static int last_y = 0;
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87 int x, y;
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88
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89 /* Check if we have a touch packet */
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90 if (mousebuf[1] != ELO_TOUCH_BYTE) {
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91 return 0;
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92 }
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93
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94 x = ((mousebuf[4] << 8) | mousebuf[3]);
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95 y = ((mousebuf[6] << 8) | mousebuf[5]);
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96
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97 if ((SDL_abs(x - last_x) > ELO_SNAP_SIZE)
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98 || (SDL_abs(y - last_y) > ELO_SNAP_SIZE)) {
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99 *dx = ((mousebuf[4] << 8) | mousebuf[3]);
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100 *dy = ((mousebuf[6] << 8) | mousebuf[5]);
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101 } else {
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102 *dx = last_x;
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103 *dy = last_y;
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104 }
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105
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106 last_x = *dx;
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107 last_y = *dy;
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108
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109 if ((mousebuf[2] & 0x07) == ELO_BTN_PRESS) {
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110 elo_button = 1;
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111 }
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112 if ((mousebuf[2] & 0x07) == ELO_BTN_RELEASE) {
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113 elo_button = 0;
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114 }
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115
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116 *button_state = elo_button;
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117 return 1;
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118 }
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119
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120 /* Convert the raw coordinates from the ELO controller
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121 to a screen position.
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122 */
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123 void
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124 eloConvertXY(_THIS, int *dx, int *dy)
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125 {
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126 int input_x = *dx;
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127 int input_y = *dy;
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128 int width = ELO_MAX_X - ELO_MIN_X;
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129 int height = ELO_MAX_Y - ELO_MIN_Y;
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130
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131 *dx =
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132 ((int) cache_vinfo.xres -
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133 ((int) cache_vinfo.xres * (input_x - ELO_MIN_X)) / width);
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134 *dy = (cache_vinfo.yres * (input_y - ELO_MIN_Y)) / height;
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135 }
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136
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137
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138 /* eloGetPacket
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139 */
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140 int
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141 eloGetPacket(unsigned char *buffer, int *buffer_p, int *checksum, int fd)
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142 {
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143 int num_bytes;
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144 int ok;
0
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145
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146 if (fd == 0) {
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147 num_bytes = ELO_PACKET_SIZE;
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148 } else {
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149 num_bytes = read(fd,
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150 (char *) (buffer + *buffer_p),
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151 ELO_PACKET_SIZE - *buffer_p);
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152 }
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153
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154 if (num_bytes < 0) {
0
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155 #ifdef DEBUG_MOUSE
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156 fprintf(stderr,
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157 "System error while reading from Elographics touchscreen.\n");
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158 #endif
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159 return 0;
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160 }
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161
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162 while (num_bytes) {
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163 if ((*buffer_p == 0) && (buffer[0] != ELO_START_BYTE)) {
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164 SDL_memcpy(&buffer[0], &buffer[1], num_bytes - 1);
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165 } else {
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166 if (*buffer_p < ELO_PACKET_SIZE - 1) {
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167 *checksum = *checksum + buffer[*buffer_p];
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168 *checksum = *checksum % 256;
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169 }
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170 (*buffer_p)++;
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171 }
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172 num_bytes--;
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173 }
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174
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175 if (*buffer_p == ELO_PACKET_SIZE) {
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176 ok = (*checksum == buffer[ELO_PACKET_SIZE - 1]);
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177 *checksum = ELO_INIT_CHECKSUM;
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178 *buffer_p = 0;
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179
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180 if (!ok) {
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181 return 0;
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182 }
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183
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184 return 1;
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185 } else {
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186 return 0;
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187 }
0
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188 }
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189
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190 /* eloSendPacket
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191 */
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192
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193 int
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194 eloSendPacket(unsigned char *packet, int fd)
0
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195 {
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196 int i, result;
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197 int sum = ELO_INIT_CHECKSUM;
0
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198
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199 packet[0] = ELO_START_BYTE;
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200 for (i = 0; i < ELO_PACKET_SIZE - 1; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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201 sum += packet[i];
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202 sum &= 0xFF;
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203 }
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204 packet[ELO_PACKET_SIZE - 1] = sum;
0
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205
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206 result = write(fd, packet, ELO_PACKET_SIZE);
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207
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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208 if (result != ELO_PACKET_SIZE) {
0
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209 #ifdef DEBUG_MOUSE
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210 printf("System error while sending to Elographics touchscreen.\n");
0
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211 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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212 return 0;
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213 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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214 return 1;
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215 }
0
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216 }
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diff changeset
217
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218
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219 /* eloWaitForInput
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220 */
1895
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221 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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222 eloWaitForInput(int fd, int timeout)
0
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223 {
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224 fd_set readfds;
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225 struct timeval to;
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226 int r;
0
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227
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228 FD_ZERO(&readfds);
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229 FD_SET(fd, &readfds);
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230 to.tv_sec = 0;
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231 to.tv_usec = timeout;
0
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232
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233 r = select(FD_SETSIZE, &readfds, NULL, NULL, &to);
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234 return r;
0
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diff changeset
235 }
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236
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237 /* eloWaitReply
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238 */
1895
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239 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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240 eloWaitReply(unsigned char type, unsigned char *reply, int fd)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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241 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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242 int ok;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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243 int i, result;
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244 int reply_p = 0;
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245 int sum = ELO_INIT_CHECKSUM;
0
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246
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247 i = ELO_MAX_TRIALS;
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248 do {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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249 ok = 0;
0
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250
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251 result = eloWaitForInput(fd, ELO_MAX_WAIT);
0
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252
1895
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253 if (result > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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254 ok = eloGetPacket(reply, &reply_p, &sum, fd);
0
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diff changeset
255
1895
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diff changeset
256 if (ok && reply[1] != type && type != ELO_PARAMETER) {
0
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diff changeset
257 #ifdef DEBUG_MOUSE
1895
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258 fprintf(stderr, "Wrong reply received\n");
0
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diff changeset
259 #endif
1895
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260 ok = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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261 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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262 } else {
0
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263 #ifdef DEBUG_MOUSE
1895
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264 fprintf(stderr, "No input!\n");
0
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diff changeset
265 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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266 }
0
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267
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diff changeset
268 if (result == 0) {
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269 i--;
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diff changeset
270 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
271 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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272 while (!ok && (i > 0));
0
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273
1895
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274 return ok;
0
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parents:
diff changeset
275 }
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276
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diff changeset
277
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diff changeset
278 /* eloWaitAck
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diff changeset
279 */
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280
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281 int
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282 eloWaitAck(int fd)
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283 {
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284 unsigned char packet[ELO_PACKET_SIZE];
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285 int i, nb_errors;
0
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286
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287 if (eloWaitReply(ELO_ACK, packet, fd)) {
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288 for (i = 0, nb_errors = 0; i < 4; i++) {
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289 if (packet[2 + i] != '0') {
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290 nb_errors++;
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291 }
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292 }
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293
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294 if (nb_errors != 0) {
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295 #ifdef DEBUG_MOUSE
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296 fprintf(stderr,
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297 "Elographics acknowledge packet reports %d errors\n",
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298 nb_errors);
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299 #endif
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300 }
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301 return 1;
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302 } else {
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303 return 0;
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304 }
0
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305 }
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306
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307
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308 /* eloSendQuery --
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309 */
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310 int
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311 eloSendQuery(unsigned char *request, unsigned char *reply, int fd)
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312 {
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313 int ok;
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314
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315 if (eloSendPacket(request, fd)) {
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316 ok = eloWaitReply(toupper(request[1]), reply, fd);
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317 if (ok) {
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318 ok = eloWaitAck(fd);
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319 }
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320 return ok;
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321 } else {
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322 return 0;
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323 }
0
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324 }
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diff changeset
325
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326
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327 /* eloSendControl
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328 */
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329 int
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330 eloSendControl(unsigned char *control, int fd)
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331 {
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332 if (eloSendPacket(control, fd)) {
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333 return eloWaitAck(fd);
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334 } else {
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335 return 0;
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336 }
0
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337 }
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338
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339 /* eloInitController
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340 */
1895
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341 int
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342 eloInitController(int fd)
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343 {
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344 unsigned char req[ELO_PACKET_SIZE];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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345 unsigned char reply[ELO_PACKET_SIZE];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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346 const char *buffer = NULL;
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347 int result = 0;
0
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348
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349 struct termios mouse_termios;
0
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350
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351 /* try to read the calibration values */
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352 buffer = SDL_getenv("SDL_ELO_MIN_X");
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353 if (buffer) {
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354 ELO_MIN_X = SDL_atoi(buffer);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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355 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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356 buffer = SDL_getenv("SDL_ELO_MAX_X");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
357 if (buffer) {
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358 ELO_MAX_X = SDL_atoi(buffer);
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359 }
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diff changeset
360 buffer = SDL_getenv("SDL_ELO_MIN_Y");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
361 if (buffer) {
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diff changeset
362 ELO_MIN_Y = SDL_atoi(buffer);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
363 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
364 buffer = SDL_getenv("SDL_ELO_MAX_Y");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
365 if (buffer) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
366 ELO_MAX_Y = SDL_atoi(buffer);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
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367 }
0
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diff changeset
368 #ifdef DEBUG_MOUSE
1895
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369 fprintf(stderr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
370 "ELO calibration values:\nmin_x: %i\nmax_x: %i\nmin_y: %i\nmax_y: %i\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
371 ELO_MIN_X, ELO_MAX_X, ELO_MIN_Y, ELO_MAX_Y);
0
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diff changeset
372 #endif
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373
1895
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374 /* set comm params */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
375 SDL_memset(&mouse_termios, 0, sizeof(mouse_termios));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
376 mouse_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
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377 mouse_termios.c_cc[VMIN] = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
378 result = tcsetattr(fd, TCSANOW, &mouse_termios);
0
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parents:
diff changeset
379
1895
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diff changeset
380 if (result < 0) {
0
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diff changeset
381 #ifdef DEBUG_MOUSE
1895
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diff changeset
382 fprintf(stderr, "Unable to configure Elographics touchscreen port\n");
0
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parents:
diff changeset
383 #endif
1895
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diff changeset
384 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
385 }
0
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parents:
diff changeset
386
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
387 SDL_memset(req, 0, ELO_PACKET_SIZE);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
388 req[1] = tolower(ELO_PARAMETER);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
389 if (!eloSendQuery(req, reply, fd)) {
0
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diff changeset
390 #ifdef DEBUG_MOUSE
1895
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diff changeset
391 fprintf(stderr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
392 "Not at the specified rate or model 2310, will continue\n");
0
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parents:
diff changeset
393 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
394 }
0
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diff changeset
395
1895
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
396 SDL_memset(req, 0, ELO_PACKET_SIZE);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
397 req[1] = tolower(ELO_ID);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
398 if (eloSendQuery(req, reply, fd)) {
0
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parents:
diff changeset
399 #ifdef DEBUG_MOUSE
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
400 fprintf(stderr, "Ok, controller configured!\n");
0
74212992fb08 Initial revision
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parents:
diff changeset
401 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
402 } else {
0
74212992fb08 Initial revision
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parents:
diff changeset
403 #ifdef DEBUG_MOUSE
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
404 fprintf(stderr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
405 "Unable to ask Elographics touchscreen identification\n");
0
74212992fb08 Initial revision
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parents:
diff changeset
406 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
407 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
408 }
0
74212992fb08 Initial revision
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parents:
diff changeset
409
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
410 SDL_memset(req, 0, ELO_PACKET_SIZE);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
411 req[1] = ELO_MODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
412 req[3] = ELO_TOUCH_MODE | ELO_STREAM_MODE | ELO_UNTOUCH_MODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
413 req[4] = ELO_TRACKING_MODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
414 if (!eloSendControl(req, fd)) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 #ifdef DEBUG_MOUSE
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
416 fprintf(stderr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
417 "Unable to change Elographics touchscreen operating mode\n");
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
419 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
420 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
422 SDL_memset(req, 0, ELO_PACKET_SIZE);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
423 req[1] = ELO_REPORT;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
424 req[2] = ELO_UNTOUCH_DELAY;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
425 req[3] = ELO_REPORT_DELAY;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
426 if (!eloSendControl(req, fd)) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 #ifdef DEBUG_MOUSE
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
428 fprintf(stderr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
429 "Unable to change Elographics touchscreen reports timings\n");
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
431 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
432 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
434 return 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 }
4
4f6c5f021323 Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
436
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
437 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
438 eloReadPosition(_THIS, int fd, int *x, int *y, int *button_state, int *realx,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
439 int *realy)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
440 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
441 unsigned char buffer[ELO_PACKET_SIZE];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
442 int pointer = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
443 int checksum = ELO_INIT_CHECKSUM;
4
4f6c5f021323 Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
444
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
445 while (pointer < ELO_PACKET_SIZE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
446 if (eloGetPacket(buffer, &pointer, &checksum, fd)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
447 break;
4
4f6c5f021323 Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
448 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
449 }
4
4f6c5f021323 Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
450
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
451 if (!eloParsePacket(buffer, realx, realy, button_state)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
452 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
453 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
454
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
455 *x = *realx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
456 *y = *realy;
4
4f6c5f021323 Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
457
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
458 eloConvertXY(this, x, y);
4
4f6c5f021323 Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
459
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
460 return 1;
4
4f6c5f021323 Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
461 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
462
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
463 /* vi: set ts=4 sw=4 expandtab: */