Mercurial > MadButterfly
annotate src/animate.c @ 117:e4e47d2cdbcd
Tank
| author | Thinker K.F. Li <thinker@branda.to> |
|---|---|
| date | Sun, 14 Sep 2008 18:51:16 +0800 |
| parents | 1d74eb3861b7 |
| children | 257a1d314bcd |
| rev | line source |
|---|---|
| 111 | 1 /*! \file |
| 2 * \brief Animation tools. | |
| 3 * | |
| 117 | 4 * \sa \ref ani |
| 111 | 5 */ |
| 6 /*! \page ani What is Animation? | |
| 41 | 7 * |
| 117 | 8 * Animation is a program to move, resize, rotate, ..., changing |
| 9 * graphics on the output screen. | |
| 10 * | |
| 11 * \image html program.png | |
| 12 * | |
| 41 | 13 * XXX: Program is a sequence of actions duration a perior. |
| 14 * Actions are grouped into words. A program defines | |
| 15 * the order and time of playing of words. A word | |
| 16 * defines how long to perform a set of actions. Actions | |
| 17 * in a word are performed concurrently. | |
| 45 | 18 * |
| 19 * Animation shapes are updated periodically. Every action | |
| 20 * are working with start, step, and stop 3 calls. start is | |
| 21 * called when start time the word, contain it, due. step is | |
| 22 * called periodically in duration of playing time start at | |
| 23 * 'start time'. When the clock run out the playing time of | |
| 24 * a word, it call stop of actions in the word. | |
| 111 | 25 * |
| 26 * A program is driven by a timer. Once a program is started, it registers | |
| 27 * with timer for periodic running. \ref mb_tman_t is timer of | |
| 28 * MadButterfly. The update frequence is 10fps by default, now. | |
| 29 * | |
| 117 | 30 * \section use_progm How to Use Animation Program? |
| 31 * Following code block creates a program with 2 words. First word is | |
| 32 * started immediately after the program been started. It is consisted | |
| 33 * for 1 second. Second word is started 1 second after the program been | |
| 34 * started. It is consisted for 2 seconds. There are 2 action in | |
| 35 * first word, they shift graphics managed by coord1 & coord2 by (50,50) and | |
| 36 * (-50,50) pixels, respectly. The shifting is performed incrementally | |
| 37 * in 1 second. Second word shifts coord1 and coord2, too. And, graphics | |
| 38 * managed by coord3 are hidden at end of the word. At end of code in the | |
| 39 * block, mb_progm_start() starts the program. 3rd argument of | |
| 40 * mb_progm_start() must be current wall time. | |
| 41 * | |
| 42 * \code | |
| 43 * progm = mb_progm_new(10, &rdman); | |
| 44 * | |
| 45 * MB_TIMEVAL_SET(&start, 0, 0); | |
| 46 * MB_TIMEVAL_SET(&playing, 1, 0); | |
| 47 * word = mb_progm_next_word(progm, &start, &playing); | |
| 48 * | |
| 49 * act = mb_shift_new(50, 50, coord1, word); | |
| 50 * act = mb_shift_new(-50, 50, coord2, word); | |
| 51 * | |
| 52 * MB_TIMEVAL_SET(&start, 1, 0); | |
| 53 * MB_TIMEVAL_SET(&playing, 2, 0); | |
| 54 * word = mb_progm_next_word(progm, &start, &playing); | |
| 55 * | |
| 56 * act = mb_shift_new(0, 20, coord1, word); | |
| 57 * act = mb_shift_new(0, -20, coord2, word); | |
| 58 * act = mb_visibility_new(VIS_HIDDEN, coord3, word); | |
| 59 * | |
| 60 * gettimeofday(&tv, NULL); | |
| 61 * MB_TIMEVAL_SET(&mbtv, tv.tv_sec, tv.tv_usec); | |
| 62 * mb_progm_start(progm, tman, &mbtv); | |
| 63 * \endcode | |
| 64 * | |
| 65 * | |
| 66 * \sa \ref animate.c | |
| 41 | 67 */ |
| 68 #include <stdio.h> | |
| 69 #include <stdlib.h> | |
| 70 #include <string.h> | |
| 71 #include "mb_types.h" | |
| 72 #include "redraw_man.h" | |
| 73 #include "mb_timer.h" | |
| 74 #include "animate.h" | |
| 75 | |
| 76 | |
| 42 | 77 #define STEP_INTERVAL 100000 |
| 41 | 78 #define ASSERT(x) |
| 79 | |
| 80 /*! \brief A word is a set of concurrent actions in a program. | |
| 81 */ | |
| 82 struct _mb_word { | |
| 83 mb_timeval_t start_time; /*!< time to start the word */ | |
| 84 mb_timeval_t playing_time; /*!< time duration of playing */ | |
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85 mb_timeval_t abs_start, abs_stop; |
| 41 | 86 STAILQ(mb_action_t) actions; |
| 87 }; | |
| 88 | |
| 89 /*! \brief A program describe a series of actions to animate shapes. | |
| 51 | 90 * |
| 91 * first_playing is an index to one of words. It always points to | |
| 92 * the first of words that is playing or waiting for playing. | |
| 41 | 93 */ |
| 94 struct _mb_progm { | |
| 95 redraw_man_t *rdman; | |
| 96 | |
| 46 | 97 mb_timeval_t start_time; |
| 41 | 98 int first_playing; /*!< first playing word. */ |
| 99 mb_tman_t *tman; | |
| 100 | |
| 101 int n_words; | |
| 102 int max_words; | |
| 103 mb_word_t words[1]; | |
| 104 }; | |
| 105 | |
| 106 mb_progm_t *mb_progm_new(int max_words, redraw_man_t *rdman) { | |
| 107 mb_progm_t *progm; | |
| 108 int i; | |
| 109 | |
| 110 progm = (mb_progm_t *)malloc(sizeof(mb_progm_t) + | |
| 111 (sizeof(mb_word_t) * (max_words - 1))); | |
| 112 if(progm == NULL) | |
| 113 return NULL; | |
| 114 | |
| 115 progm->rdman = rdman; | |
| 116 progm->n_words = 0; | |
| 117 progm->max_words = max_words; | |
| 118 for(i = 0; i < max_words; i++) | |
| 119 STAILQ_INIT(progm->words[i].actions); | |
| 120 return progm; | |
| 121 } | |
| 122 | |
| 123 void mb_progm_free(mb_progm_t *progm) { | |
| 124 int n_words; | |
| 125 mb_word_t *word; | |
| 126 mb_action_t *cur_act; | |
| 127 int i; | |
| 128 | |
| 129 n_words = progm->n_words; | |
| 130 for(i = 0; i < n_words; i++) { | |
| 131 word = progm->words + i; | |
| 132 for(cur_act = STAILQ_HEAD(word->actions); | |
| 133 cur_act != NULL; | |
| 134 cur_act = STAILQ_HEAD(word->actions)) { | |
| 135 STAILQ_REMOVE(word->actions, mb_action_t, next, cur_act); | |
| 136 cur_act->free(cur_act); | |
| 137 } | |
| 138 } | |
| 139 free(progm); | |
| 140 } | |
| 141 | |
| 142 /*! \brief Add a new word into a program. | |
| 143 * | |
| 144 * The start time of new word should bigger or equal to last one. | |
| 145 * The time should be specified in incremental order. | |
| 146 */ | |
| 147 mb_word_t *mb_progm_next_word(mb_progm_t *progm, | |
| 148 const mb_timeval_t *start, | |
| 149 const mb_timeval_t *playing) { | |
| 150 mb_word_t *word; | |
| 151 if(progm->n_words >= progm->max_words) | |
| 152 return NULL; | |
| 153 if(progm->n_words && | |
| 154 MB_TIMEVAL_LATER(&progm->words[progm->n_words - 1].start_time, start)) | |
| 155 return NULL; | |
| 156 word = progm->words + progm->n_words++; | |
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157 MB_TIMEVAL_CP(&word->start_time, start); |
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158 MB_TIMEVAL_CP(&word->playing_time, playing); |
| 41 | 159 return word; |
| 160 } | |
| 161 | |
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162 void mb_word_add_action(mb_word_t *word, mb_action_t *act) { |
| 41 | 163 STAILQ_INS_TAIL(word->actions, mb_action_t, next, act); |
| 164 } | |
| 165 | |
| 166 static void mb_word_start(mb_word_t *word, const mb_timeval_t *tmo, | |
| 167 const mb_timeval_t *now, redraw_man_t *rdman) { | |
| 42 | 168 mb_action_t *act; |
| 169 | |
| 170 for(act = STAILQ_HEAD(word->actions); | |
| 171 act != NULL; | |
| 172 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
| 173 act->start(act, tmo, &word->playing_time, rdman); | |
| 174 } | |
| 41 | 175 } |
| 176 | |
| 177 static void mb_word_step(mb_word_t *word, const mb_timeval_t *tmo, | |
| 178 const mb_timeval_t *now, redraw_man_t *rdman) { | |
| 42 | 179 mb_action_t *act; |
| 180 | |
| 181 for(act = STAILQ_HEAD(word->actions); | |
| 182 act != NULL; | |
| 183 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
| 184 act->step(act, tmo, rdman); | |
| 185 } | |
| 41 | 186 } |
| 187 | |
| 188 static void mb_word_stop(mb_word_t *word, const mb_timeval_t *tmo, | |
| 189 const mb_timeval_t *now, redraw_man_t *rdman) { | |
| 42 | 190 mb_action_t *act; |
| 191 | |
| 192 for(act = STAILQ_HEAD(word->actions); | |
| 193 act != NULL; | |
| 194 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
| 195 act->stop(act, tmo, rdman); | |
| 196 } | |
| 41 | 197 } |
| 198 | |
| 46 | 199 /* |
| 200 * Any two actions in concurrent words never change the same attribute. | |
| 201 * Start time of words in a program are specified in incremental order. | |
| 202 */ | |
| 41 | 203 static void mb_progm_step(const mb_timeval_t *tmo, |
| 46 | 204 const mb_timeval_t *now, |
| 205 void *arg) { | |
| 41 | 206 mb_progm_t *progm = (mb_progm_t *)arg; |
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207 mb_timeval_t next_tmo; |
| 41 | 208 mb_word_t *word; |
| 209 mb_timer_t *timer; | |
| 210 int i; | |
| 211 | |
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212 MB_TIMEVAL_SET(&next_tmo, 0, STEP_INTERVAL); |
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213 MB_TIMEVAL_ADD(&next_tmo, tmo); |
| 41 | 214 |
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215 /* _step() or _stop() words that in playing. */ |
| 41 | 216 i = progm->first_playing; |
| 217 for(word = progm->words + i; | |
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218 i < progm->n_words && MB_TIMEVAL_LATER(tmo, &word->abs_start); |
| 41 | 219 word = progm->words + ++i) { |
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220 if(MB_TIMEVAL_LATER(tmo, &word->abs_stop)) |
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221 continue; |
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222 if(MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop)) |
| 46 | 223 mb_word_stop(word, tmo, now, progm->rdman); |
| 224 else | |
| 41 | 225 mb_word_step(word, tmo, now, progm->rdman); |
| 226 } | |
| 227 | |
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228 /* Start words that their abs_start is in duration |
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229 * from now to timeout for next update. |
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230 */ |
| 41 | 231 for(word = progm->words + i; |
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232 i < progm->n_words && MB_TIMEVAL_LATER(&next_tmo, &word->abs_start); |
| 41 | 233 word = progm->words + ++i) { |
| 234 mb_word_start(word, tmo, now, progm->rdman); | |
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235 if(MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop)) |
| 46 | 236 mb_word_stop(word, tmo, now, progm->rdman); |
| 41 | 237 } |
| 238 | |
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239 /* Find a new first_playing if any consequence words, following current |
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240 * first_playing word, are stoped. |
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241 */ |
| 46 | 242 i = progm->first_playing; |
| 243 for(word = progm->words + i; | |
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244 i < progm->n_words && MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop); |
| 46 | 245 word = progm->words + ++i) { |
| 246 progm->first_playing++; | |
| 247 } | |
| 248 | |
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249 /* Setup timeout for next update. */ |
| 41 | 250 if(progm->first_playing < progm->n_words) { |
| 42 | 251 word = progm->words + progm->first_playing; |
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252 if(MB_TIMEVAL_LATER(&word->abs_start, &next_tmo)) |
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253 MB_TIMEVAL_CP(&next_tmo, &word->abs_start); |
| 46 | 254 timer = mb_tman_timeout(progm->tman, &next_tmo, |
| 255 mb_progm_step, progm); | |
| 41 | 256 } |
| 257 } | |
| 258 | |
| 259 void mb_progm_start(mb_progm_t *progm, mb_tman_t *tman, | |
| 260 mb_timeval_t *now) { | |
| 261 mb_timer_t *timer; | |
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262 mb_word_t *word; |
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263 int i; |
| 41 | 264 |
| 265 if(progm->n_words == 0) | |
| 266 return; | |
| 267 | |
| 268 progm->tman = tman; | |
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269 MB_TIMEVAL_CP(&progm->start_time, now); |
| 41 | 270 progm->first_playing = 0; |
| 271 | |
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272 for(i = 0; i < progm->n_words; i++) { |
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273 word = progm->words + i; |
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274 MB_TIMEVAL_CP(&word->abs_start, &word->start_time); |
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275 MB_TIMEVAL_ADD(&word->abs_start, now); |
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276 MB_TIMEVAL_CP(&word->abs_stop, &word->abs_start); |
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277 MB_TIMEVAL_ADD(&word->abs_stop, &word->playing_time); |
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278 } |
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279 |
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280 if(MB_TIMEVAL_EQ(&progm->words[0].abs_start, now)) { |
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281 mb_progm_step(now, now, progm); |
| 41 | 282 return; |
| 283 } | |
| 284 | |
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285 timer = mb_tman_timeout(tman, &progm->words[0].abs_start, |
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286 mb_progm_step, progm); |
| 41 | 287 ASSERT(timer != NULL); |
| 288 } | |
| 289 | |
| 42 | 290 void mb_progm_abort(mb_progm_t *progm, mb_tman_t *tman) { |
| 291 } | |
| 292 | |
| 50 | 293 #ifdef UNITTEST |
| 294 | |
| 295 #include <CUnit/Basic.h> | |
| 296 | |
| 297 typedef struct _mb_dummy mb_dummy_t; | |
| 298 | |
| 299 struct _mb_dummy { | |
| 300 mb_action_t action; | |
| 301 int id; | |
| 302 int *logidx; | |
| 303 int *logs; | |
| 304 }; | |
| 305 | |
| 306 | |
| 307 static void mb_dummy_start(mb_action_t *act, | |
| 308 const mb_timeval_t *now, | |
| 309 const mb_timeval_t *playing_time, | |
| 310 redraw_man_t *rdman) { | |
| 311 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
| 312 | |
| 313 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
| 314 } | |
| 315 | |
| 316 static void mb_dummy_step(mb_action_t *act, | |
| 317 const mb_timeval_t *now, | |
| 318 redraw_man_t *rdman) { | |
| 319 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
| 320 | |
| 321 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
| 322 } | |
| 323 | |
| 324 static void mb_dummy_stop(mb_action_t *act, | |
| 325 const mb_timeval_t *now, | |
| 326 redraw_man_t *rdman) { | |
| 327 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
| 328 | |
| 329 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
| 330 } | |
| 331 | |
| 332 static void mb_dummy_free(mb_action_t *act) { | |
| 333 free(act); | |
| 334 } | |
| 335 | |
| 336 mb_action_t *mb_dummy_new(int id, int *logidx, int *logs, mb_word_t *word) { | |
| 337 mb_dummy_t *dummy; | |
| 338 | |
| 339 dummy = (mb_dummy_t *)malloc(sizeof(mb_dummy_t)); | |
| 340 if(dummy == NULL) | |
| 341 return NULL; | |
| 342 | |
| 343 dummy->id = id; | |
| 344 dummy->logidx = logidx; | |
| 345 dummy->logs = logs; | |
| 346 | |
| 347 dummy->action.start = mb_dummy_start; | |
| 348 dummy->action.step = mb_dummy_step; | |
| 349 dummy->action.stop = mb_dummy_stop; | |
| 350 dummy->action.free = mb_dummy_free; | |
| 351 | |
| 352 mb_word_add_action(word, (mb_action_t *)dummy); | |
| 353 | |
| 354 return (mb_action_t *)dummy; | |
| 355 } | |
| 356 | |
| 357 void test_animate_words(void) { | |
| 358 mb_progm_t *progm; | |
| 359 mb_word_t *word; | |
| 360 mb_action_t *acts[4]; | |
| 361 mb_tman_t *tman; | |
| 362 mb_timeval_t tv1, tv2, now, tmo_after; | |
| 363 int logcnt = 0; | |
| 364 int logs[256]; | |
| 365 int r; | |
| 366 | |
| 367 tman = mb_tman_new(); | |
| 368 CU_ASSERT(tman != NULL); | |
| 369 | |
| 370 progm = mb_progm_new(3, NULL); | |
| 371 CU_ASSERT(progm != NULL); | |
| 372 | |
| 373 MB_TIMEVAL_SET(&tv1, 1, 0); | |
| 374 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL * 3); | |
| 375 word = mb_progm_next_word(progm, &tv1, &tv2); | |
| 376 CU_ASSERT(word != NULL); | |
| 377 acts[0] = mb_dummy_new(0, &logcnt, logs, word); | |
| 378 CU_ASSERT(acts[0] != NULL); | |
| 379 | |
| 380 MB_TIMEVAL_SET(&tv1, 1, STEP_INTERVAL * 4 / 3); | |
| 381 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL / 3); | |
| 382 word = mb_progm_next_word(progm, &tv1, &tv2); | |
| 383 CU_ASSERT(word != NULL); | |
| 384 acts[1] = mb_dummy_new(1, &logcnt, logs, word); | |
| 385 CU_ASSERT(acts[1] != NULL); | |
| 386 | |
| 387 MB_TIMEVAL_SET(&tv1, 1, STEP_INTERVAL * 2); | |
| 388 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL * 3); | |
| 389 word = mb_progm_next_word(progm, &tv1, &tv2); | |
| 390 CU_ASSERT(word != NULL); | |
| 391 acts[2] = mb_dummy_new(2, &logcnt, logs, word); | |
| 392 CU_ASSERT(acts[2] != NULL); | |
| 393 | |
| 394 MB_TIMEVAL_SET(&now, 0, 0); | |
| 395 mb_progm_start(progm, tman, &now); | |
| 396 | |
| 397 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 398 CU_ASSERT(r == 0); | |
| 399 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 1 && | |
| 400 MB_TIMEVAL_USEC(&tmo_after) == 0); | |
| 401 | |
| 402 /* 1.0s */ | |
| 403 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 404 mb_tman_handle_timeout(tman, &now); | |
| 405 CU_ASSERT(logcnt == 1); | |
| 406 | |
| 407 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 408 CU_ASSERT(r == 0); | |
| 409 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 410 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 411 | |
| 412 /* 1.1s */ | |
| 413 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 414 mb_tman_handle_timeout(tman, &now); | |
| 415 CU_ASSERT(logcnt == 4); | |
| 416 | |
| 417 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 418 CU_ASSERT(r == 0); | |
| 419 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 420 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 421 | |
| 422 /* 1.2s */ | |
| 423 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 424 mb_tman_handle_timeout(tman, &now); | |
| 425 CU_ASSERT(logcnt == 6); | |
| 426 | |
| 427 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 428 CU_ASSERT(r == 0); | |
| 429 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 430 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 431 | |
| 432 /* 1.3s */ | |
| 433 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 434 mb_tman_handle_timeout(tman, &now); | |
| 435 CU_ASSERT(logcnt == 8); | |
| 436 | |
| 437 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 438 CU_ASSERT(r == 0); | |
| 439 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 440 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 441 | |
| 442 /* 1.4s */ | |
| 443 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 444 mb_tman_handle_timeout(tman, &now); | |
| 445 CU_ASSERT(logcnt == 9); | |
| 446 | |
| 447 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 448 CU_ASSERT(r == 0); | |
| 449 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 450 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 451 | |
| 452 /* 1.5s */ | |
| 453 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 454 mb_tman_handle_timeout(tman, &now); | |
| 455 CU_ASSERT(logcnt == 10); | |
| 456 | |
| 457 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 458 CU_ASSERT(r == -1); | |
| 459 | |
| 460 mb_progm_free(progm); | |
| 461 mb_tman_free(tman); | |
| 462 } | |
| 463 | |
| 464 CU_pSuite get_animate_suite(void) { | |
| 465 CU_pSuite suite; | |
| 466 | |
| 467 suite = CU_add_suite("Suite_animate", NULL, NULL); | |
| 468 if(suite == NULL) | |
| 469 return NULL; | |
| 470 | |
| 471 CU_ADD_TEST(suite, test_animate_words); | |
| 472 | |
| 473 return suite; | |
| 474 } | |
| 475 | |
| 476 #endif /* UNITTEST */ |