Mercurial > sdl-ios-xcode
annotate src/video/fbcon/SDL_fbelo.c @ 3235:d35b649858e0
David Carre to Sam
Hello sam, me again.
I'v fixed another bug in the pandora code, it's on the no-X videodriver, i forgot to add some code to destroy the window so it was impossible to reload SDL inside the same application (eglTerminate).
You'll find the svn diff attached.
See you,
David.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 11 Aug 2009 13:45:01 +0000 |
parents | 99210400e8b9 |
children | f7b03b6838cb |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 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 | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 #include <unistd.h> | |
25 #include <sys/time.h> | |
26 #include <ctype.h> | |
27 | |
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28 #include "SDL_stdinc.h" |
0 | 29 #include "SDL_fbvideo.h" |
30 #include "SDL_fbelo.h" | |
31 | |
32 /* | |
33 calibration default values | |
34 values are read from the following environment variables: | |
35 | |
36 SDL_ELO_MIN_X | |
37 SDL_ELO_MAX_X | |
38 SDL_ELO_MIN_Y | |
39 SDL_ELO_MAX_Y | |
40 */ | |
41 | |
42 static int ELO_MIN_X = 400; | |
43 static int ELO_MAX_X = 3670; | |
44 static int ELO_MIN_Y = 500; | |
45 static int ELO_MAX_Y = 3540; | |
46 | |
47 #define ELO_SNAP_SIZE 6 | |
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48 #define ELO_TOUCH_BYTE 'T' |
0 | 49 #define ELO_ID 'I' |
50 #define ELO_MODE 'M' | |
51 #define ELO_PARAMETER 'P' | |
52 #define ELO_REPORT 'B' | |
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53 #define ELO_ACK 'A' |
0 | 54 |
55 #define ELO_INIT_CHECKSUM 0xAA | |
56 | |
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57 #define ELO_BTN_PRESS 0x01 |
0 | 58 #define ELO_STREAM 0x02 |
59 #define ELO_BTN_RELEASE 0x04 | |
60 | |
61 #define ELO_TOUCH_MODE 0x01 | |
62 #define ELO_STREAM_MODE 0x02 | |
63 #define ELO_UNTOUCH_MODE 0x04 | |
64 #define ELO_RANGE_CHECK_MODE 0x40 | |
65 #define ELO_TRIM_MODE 0x02 | |
66 #define ELO_CALIB_MODE 0x04 | |
67 #define ELO_SCALING_MODE 0x08 | |
68 #define ELO_TRACKING_MODE 0x40 | |
69 | |
70 #define ELO_SERIAL_MASK 0xF8 | |
71 | |
72 #define ELO_SERIAL_IO '0' | |
73 | |
74 #define ELO_MAX_TRIALS 3 | |
75 #define ELO_MAX_WAIT 100000 | |
76 #define ELO_UNTOUCH_DELAY 5 | |
77 #define ELO_REPORT_DELAY 1 | |
78 | |
79 /* eloParsePacket | |
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; |
0 | 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 } |
0 | 93 |
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94 x = ((mousebuf[4] << 8) | mousebuf[3]); |
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95 y = ((mousebuf[6] << 8) | mousebuf[5]); |
0 | 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 } |
0 | 105 |
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106 last_x = *dx; |
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107 last_y = *dy; |
0 | 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 } |
0 | 115 |
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116 *button_state = elo_button; |
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117 return 1; |
0 | 118 } |
119 | |
120 /* Convert the raw coordinates from the ELO controller | |
121 to a screen position. | |
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; |
0 | 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; |
0 | 135 } |
136 | |
137 | |
138 /* eloGetPacket | |
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 | 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 } |
0 | 153 |
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154 if (num_bytes < 0) { |
0 | 155 #ifdef DEBUG_MOUSE |
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156 fprintf(stderr, |
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157 "System error while reading from Elographics touchscreen.\n"); |
0 | 158 #endif |
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159 return 0; |
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160 } |
0 | 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 } |
0 | 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; |
0 | 179 |
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180 if (!ok) { |
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181 return 0; |
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182 } |
0 | 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 | 188 } |
189 | |
190 /* eloSendPacket | |
191 */ | |
192 | |
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193 int |
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194 eloSendPacket(unsigned char *packet, int fd) |
0 | 195 { |
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196 int i, result; |
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197 int sum = ELO_INIT_CHECKSUM; |
0 | 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++) { |
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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 | 205 |
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206 result = write(fd, packet, ELO_PACKET_SIZE); |
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207 |
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208 if (result != ELO_PACKET_SIZE) { |
0 | 209 #ifdef DEBUG_MOUSE |
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210 printf("System error while sending to Elographics touchscreen.\n"); |
0 | 211 #endif |
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212 return 0; |
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213 } else { |
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214 return 1; |
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215 } |
0 | 216 } |
217 | |
218 | |
219 /* eloWaitForInput | |
220 */ | |
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221 int |
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222 eloWaitForInput(int fd, int timeout) |
0 | 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 | 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 | 232 |
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233 r = select(FD_SETSIZE, &readfds, NULL, NULL, &to); |
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234 return r; |
0 | 235 } |
236 | |
237 /* eloWaitReply | |
238 */ | |
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239 int |
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240 eloWaitReply(unsigned char type, unsigned char *reply, int fd) |
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241 { |
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242 int ok; |
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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 | 246 |
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247 i = ELO_MAX_TRIALS; |
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248 do { |
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249 ok = 0; |
0 | 250 |
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251 result = eloWaitForInput(fd, ELO_MAX_WAIT); |
0 | 252 |
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253 if (result > 0) { |
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254 ok = eloGetPacket(reply, &reply_p, &sum, fd); |
0 | 255 |
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256 if (ok && reply[1] != type && type != ELO_PARAMETER) { |
0 | 257 #ifdef DEBUG_MOUSE |
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258 fprintf(stderr, "Wrong reply received\n"); |
0 | 259 #endif |
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260 ok = 0; |
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261 } |
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262 } else { |
0 | 263 #ifdef DEBUG_MOUSE |
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264 fprintf(stderr, "No input!\n"); |
0 | 265 #endif |
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266 } |
0 | 267 |
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268 if (result == 0) { |
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269 i--; |
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270 } |
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271 } while (!ok && (i > 0)); |
0 | 272 |
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273 return ok; |
0 | 274 } |
275 | |
276 | |
277 /* eloWaitAck | |
278 */ | |
279 | |
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280 int |
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281 eloWaitAck(int fd) |
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282 { |
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283 unsigned char packet[ELO_PACKET_SIZE]; |
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284 int i, nb_errors; |
0 | 285 |
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286 if (eloWaitReply(ELO_ACK, packet, fd)) { |
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287 for (i = 0, nb_errors = 0; i < 4; i++) { |
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288 if (packet[2 + i] != '0') { |
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289 nb_errors++; |
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290 } |
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291 } |
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292 |
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293 if (nb_errors != 0) { |
0 | 294 #ifdef DEBUG_MOUSE |
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295 fprintf(stderr, |
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296 "Elographics acknowledge packet reports %d errors\n", |
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297 nb_errors); |
0 | 298 #endif |
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299 } |
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300 return 1; |
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301 } else { |
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302 return 0; |
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303 } |
0 | 304 } |
305 | |
306 | |
307 /* eloSendQuery -- | |
308 */ | |
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309 int |
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310 eloSendQuery(unsigned char *request, unsigned char *reply, int fd) |
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311 { |
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312 int ok; |
0 | 313 |
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314 if (eloSendPacket(request, fd)) { |
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315 ok = eloWaitReply(toupper(request[1]), reply, fd); |
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316 if (ok) { |
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317 ok = eloWaitAck(fd); |
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318 } |
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319 return ok; |
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320 } else { |
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321 return 0; |
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322 } |
0 | 323 } |
324 | |
325 | |
326 /* eloSendControl | |
327 */ | |
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328 int |
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329 eloSendControl(unsigned char *control, int fd) |
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330 { |
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331 if (eloSendPacket(control, fd)) { |
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332 return eloWaitAck(fd); |
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333 } else { |
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334 return 0; |
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335 } |
0 | 336 } |
337 | |
338 /* eloInitController | |
339 */ | |
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340 int |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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341 eloInitController(int fd) |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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342 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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343 unsigned char req[ELO_PACKET_SIZE]; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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344 unsigned char reply[ELO_PACKET_SIZE]; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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345 const char *buffer = NULL; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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346 int result = 0; |
0 | 347 |
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348 struct termios mouse_termios; |
0 | 349 |
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350 /* try to read the calibration values */ |
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351 buffer = SDL_getenv("SDL_ELO_MIN_X"); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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352 if (buffer) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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353 ELO_MIN_X = SDL_atoi(buffer); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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354 } |
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355 buffer = SDL_getenv("SDL_ELO_MAX_X"); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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356 if (buffer) { |
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357 ELO_MAX_X = SDL_atoi(buffer); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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358 } |
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359 buffer = SDL_getenv("SDL_ELO_MIN_Y"); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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360 if (buffer) { |
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361 ELO_MIN_Y = SDL_atoi(buffer); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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362 } |
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363 buffer = SDL_getenv("SDL_ELO_MAX_Y"); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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364 if (buffer) { |
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365 ELO_MAX_Y = SDL_atoi(buffer); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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366 } |
0 | 367 #ifdef DEBUG_MOUSE |
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368 fprintf(stderr, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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369 "ELO calibration values:\nmin_x: %i\nmax_x: %i\nmin_y: %i\nmax_y: %i\n", |
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370 ELO_MIN_X, ELO_MAX_X, ELO_MIN_Y, ELO_MAX_Y); |
0 | 371 #endif |
372 | |
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373 /* set comm params */ |
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374 SDL_memset(&mouse_termios, 0, sizeof(mouse_termios)); |
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375 mouse_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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376 mouse_termios.c_cc[VMIN] = 1; |
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377 result = tcsetattr(fd, TCSANOW, &mouse_termios); |
0 | 378 |
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379 if (result < 0) { |
0 | 380 #ifdef DEBUG_MOUSE |
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381 fprintf(stderr, "Unable to configure Elographics touchscreen port\n"); |
0 | 382 #endif |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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383 return 0; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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384 } |
0 | 385 |
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386 SDL_memset(req, 0, ELO_PACKET_SIZE); |
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387 req[1] = tolower(ELO_PARAMETER); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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388 if (!eloSendQuery(req, reply, fd)) { |
0 | 389 #ifdef DEBUG_MOUSE |
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390 fprintf(stderr, |
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391 "Not at the specified rate or model 2310, will continue\n"); |
0 | 392 #endif |
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393 } |
0 | 394 |
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395 SDL_memset(req, 0, ELO_PACKET_SIZE); |
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396 req[1] = tolower(ELO_ID); |
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397 if (eloSendQuery(req, reply, fd)) { |
0 | 398 #ifdef DEBUG_MOUSE |
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399 fprintf(stderr, "Ok, controller configured!\n"); |
0 | 400 #endif |
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401 } else { |
0 | 402 #ifdef DEBUG_MOUSE |
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403 fprintf(stderr, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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404 "Unable to ask Elographics touchscreen identification\n"); |
0 | 405 #endif |
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406 return 0; |
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407 } |
0 | 408 |
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409 SDL_memset(req, 0, ELO_PACKET_SIZE); |
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410 req[1] = ELO_MODE; |
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411 req[3] = ELO_TOUCH_MODE | ELO_STREAM_MODE | ELO_UNTOUCH_MODE; |
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412 req[4] = ELO_TRACKING_MODE; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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413 if (!eloSendControl(req, fd)) { |
0 | 414 #ifdef DEBUG_MOUSE |
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415 fprintf(stderr, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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416 "Unable to change Elographics touchscreen operating mode\n"); |
0 | 417 #endif |
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418 return 0; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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419 } |
0 | 420 |
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421 SDL_memset(req, 0, ELO_PACKET_SIZE); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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422 req[1] = ELO_REPORT; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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423 req[2] = ELO_UNTOUCH_DELAY; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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424 req[3] = ELO_REPORT_DELAY; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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425 if (!eloSendControl(req, fd)) { |
0 | 426 #ifdef DEBUG_MOUSE |
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427 fprintf(stderr, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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428 "Unable to change Elographics touchscreen reports timings\n"); |
0 | 429 #endif |
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430 return 0; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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431 } |
0 | 432 |
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433 return 1; |
0 | 434 } |
4
4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
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|
435 |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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436 int |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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437 eloReadPosition(_THIS, int fd, int *x, int *y, int *button_state, int *realx, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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438 int *realy) |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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439 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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440 unsigned char buffer[ELO_PACKET_SIZE]; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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441 int pointer = 0; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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442 int checksum = ELO_INIT_CHECKSUM; |
4
4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
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diff
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|
443 |
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444 while (pointer < ELO_PACKET_SIZE) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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445 if (eloGetPacket(buffer, &pointer, &checksum, fd)) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
446 break; |
4
4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
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diff
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|
447 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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448 } |
4
4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
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|
449 |
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450 if (!eloParsePacket(buffer, realx, realy, button_state)) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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451 return 0; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
452 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
453 |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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454 *x = *realx; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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455 *y = *realy; |
4
4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
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diff
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|
456 |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
457 eloConvertXY(this, x, y); |
4
4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
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diff
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|
458 |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
459 return 1; |
4
4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
Sam Lantinga <slouken@lokigames.com>
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diff
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|
460 } |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
461 |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
462 /* vi: set ts=4 sw=4 expandtab: */ |