Mercurial > MadButterfly
annotate src/animate.c @ 122:17e97e92b76e
Encapsulate X_MB_runtime_t and support X keyboard events.
| author | Thinker K.F. Li <thinker@branda.to> |
|---|---|
| date | Mon, 15 Sep 2008 20:33:06 +0800 |
| parents | 5df7403b6fbc |
| children | 9e2316dc6ecb |
| 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 | |
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77 #define STEP_INTERVAL 90000 |
| 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 | |
| 119 | 106 /*! \brief Create a program object. |
| 107 * | |
| 108 * \param max_words is maximum number of words the program can hold. | |
| 109 * \param rdman is a rdman that show graphics manipulated by it. | |
| 110 */ | |
| 41 | 111 mb_progm_t *mb_progm_new(int max_words, redraw_man_t *rdman) { |
| 112 mb_progm_t *progm; | |
| 113 int i; | |
| 114 | |
| 115 progm = (mb_progm_t *)malloc(sizeof(mb_progm_t) + | |
| 116 (sizeof(mb_word_t) * (max_words - 1))); | |
| 117 if(progm == NULL) | |
| 118 return NULL; | |
| 119 | |
| 120 progm->rdman = rdman; | |
| 121 progm->n_words = 0; | |
| 122 progm->max_words = max_words; | |
| 123 for(i = 0; i < max_words; i++) | |
| 124 STAILQ_INIT(progm->words[i].actions); | |
| 125 return progm; | |
| 126 } | |
| 127 | |
| 128 void mb_progm_free(mb_progm_t *progm) { | |
| 129 int n_words; | |
| 130 mb_word_t *word; | |
| 131 mb_action_t *cur_act; | |
| 132 int i; | |
| 133 | |
| 134 n_words = progm->n_words; | |
| 135 for(i = 0; i < n_words; i++) { | |
| 136 word = progm->words + i; | |
| 137 for(cur_act = STAILQ_HEAD(word->actions); | |
| 138 cur_act != NULL; | |
| 139 cur_act = STAILQ_HEAD(word->actions)) { | |
| 140 STAILQ_REMOVE(word->actions, mb_action_t, next, cur_act); | |
| 141 cur_act->free(cur_act); | |
| 142 } | |
| 143 } | |
| 144 free(progm); | |
| 145 } | |
| 146 | |
| 147 /*! \brief Add a new word into a program. | |
| 148 * | |
| 149 * The start time of new word should bigger or equal to last one. | |
| 150 * The time should be specified in incremental order. | |
| 151 */ | |
| 152 mb_word_t *mb_progm_next_word(mb_progm_t *progm, | |
| 153 const mb_timeval_t *start, | |
| 154 const mb_timeval_t *playing) { | |
| 155 mb_word_t *word; | |
| 156 if(progm->n_words >= progm->max_words) | |
| 157 return NULL; | |
| 158 if(progm->n_words && | |
| 159 MB_TIMEVAL_LATER(&progm->words[progm->n_words - 1].start_time, start)) | |
| 160 return NULL; | |
| 161 word = progm->words + progm->n_words++; | |
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162 MB_TIMEVAL_CP(&word->start_time, start); |
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163 MB_TIMEVAL_CP(&word->playing_time, playing); |
| 41 | 164 return word; |
| 165 } | |
| 166 | |
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167 void mb_word_add_action(mb_word_t *word, mb_action_t *act) { |
| 41 | 168 STAILQ_INS_TAIL(word->actions, mb_action_t, next, act); |
| 169 } | |
| 170 | |
| 171 static void mb_word_start(mb_word_t *word, const mb_timeval_t *tmo, | |
| 172 const mb_timeval_t *now, redraw_man_t *rdman) { | |
| 42 | 173 mb_action_t *act; |
| 174 | |
| 175 for(act = STAILQ_HEAD(word->actions); | |
| 176 act != NULL; | |
| 177 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
| 178 act->start(act, tmo, &word->playing_time, rdman); | |
| 179 } | |
| 41 | 180 } |
| 181 | |
| 182 static void mb_word_step(mb_word_t *word, const mb_timeval_t *tmo, | |
| 183 const mb_timeval_t *now, redraw_man_t *rdman) { | |
| 42 | 184 mb_action_t *act; |
| 185 | |
| 186 for(act = STAILQ_HEAD(word->actions); | |
| 187 act != NULL; | |
| 188 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
| 189 act->step(act, tmo, rdman); | |
| 190 } | |
| 41 | 191 } |
| 192 | |
| 193 static void mb_word_stop(mb_word_t *word, const mb_timeval_t *tmo, | |
| 194 const mb_timeval_t *now, redraw_man_t *rdman) { | |
| 42 | 195 mb_action_t *act; |
| 196 | |
| 197 for(act = STAILQ_HEAD(word->actions); | |
| 198 act != NULL; | |
| 199 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
| 200 act->stop(act, tmo, rdman); | |
| 201 } | |
| 41 | 202 } |
| 203 | |
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204 /*! \brief Time stepping for a program. |
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205 * |
| 46 | 206 * Any two actions in concurrent words never change the same attribute. |
| 207 * Start time of words in a program are specified in incremental order. | |
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208 * |
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209 * \note Program will take a big step at last monent. It is because |
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210 * mb_progm_step() running mb_word_stop() if the word being stop |
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211 * between now and next_tmo. It is not obviously if time stepping |
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212 * small. |
| 46 | 213 */ |
| 41 | 214 static void mb_progm_step(const mb_timeval_t *tmo, |
| 120 | 215 const mb_timeval_t *now, |
| 216 void *arg) { | |
| 41 | 217 mb_progm_t *progm = (mb_progm_t *)arg; |
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218 mb_timeval_t next_tmo; |
| 41 | 219 mb_word_t *word; |
| 220 mb_timer_t *timer; | |
| 221 int i; | |
| 222 | |
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223 MB_TIMEVAL_SET(&next_tmo, 0, STEP_INTERVAL); |
| 120 | 224 MB_TIMEVAL_ADD(&next_tmo, now); |
| 41 | 225 |
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226 /* _step() or _stop() words that in playing. */ |
| 41 | 227 i = progm->first_playing; |
| 228 for(word = progm->words + i; | |
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229 i < progm->n_words && MB_TIMEVAL_LATER(tmo, &word->abs_start); |
| 41 | 230 word = progm->words + ++i) { |
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231 if(MB_TIMEVAL_LATER(tmo, &word->abs_stop)) |
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232 continue; |
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233 if(MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop)) |
| 46 | 234 mb_word_stop(word, tmo, now, progm->rdman); |
| 235 else | |
| 41 | 236 mb_word_step(word, tmo, now, progm->rdman); |
| 237 } | |
| 238 | |
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239 /* Start words that their abs_start is in duration |
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240 * from now to timeout for next update. |
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241 */ |
| 41 | 242 for(word = progm->words + i; |
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243 i < progm->n_words && MB_TIMEVAL_LATER(&next_tmo, &word->abs_start); |
| 41 | 244 word = progm->words + ++i) { |
| 245 mb_word_start(word, tmo, now, progm->rdman); | |
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246 if(MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop)) |
| 46 | 247 mb_word_stop(word, tmo, now, progm->rdman); |
| 41 | 248 } |
| 249 | |
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250 /* Find a new first_playing if any consequence words, following current |
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251 * first_playing word, are stoped. |
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252 */ |
| 46 | 253 i = progm->first_playing; |
| 254 for(word = progm->words + i; | |
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255 i < progm->n_words && MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop); |
| 46 | 256 word = progm->words + ++i) { |
| 257 progm->first_playing++; | |
| 258 } | |
| 259 | |
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260 /* Setup timeout for next update. */ |
| 41 | 261 if(progm->first_playing < progm->n_words) { |
| 42 | 262 word = progm->words + progm->first_playing; |
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263 if(MB_TIMEVAL_LATER(&word->abs_start, &next_tmo)) |
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264 MB_TIMEVAL_CP(&next_tmo, &word->abs_start); |
| 46 | 265 timer = mb_tman_timeout(progm->tman, &next_tmo, |
| 266 mb_progm_step, progm); | |
| 41 | 267 } |
| 268 } | |
| 269 | |
| 270 void mb_progm_start(mb_progm_t *progm, mb_tman_t *tman, | |
| 271 mb_timeval_t *now) { | |
| 272 mb_timer_t *timer; | |
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273 mb_word_t *word; |
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274 int i; |
| 41 | 275 |
| 276 if(progm->n_words == 0) | |
| 277 return; | |
| 278 | |
| 279 progm->tman = tman; | |
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280 MB_TIMEVAL_CP(&progm->start_time, now); |
| 41 | 281 progm->first_playing = 0; |
| 282 | |
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283 for(i = 0; i < progm->n_words; i++) { |
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284 word = progm->words + i; |
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285 MB_TIMEVAL_CP(&word->abs_start, &word->start_time); |
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286 MB_TIMEVAL_ADD(&word->abs_start, now); |
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287 MB_TIMEVAL_CP(&word->abs_stop, &word->abs_start); |
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288 MB_TIMEVAL_ADD(&word->abs_stop, &word->playing_time); |
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289 } |
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290 |
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291 if(MB_TIMEVAL_EQ(&progm->words[0].abs_start, now)) { |
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292 mb_progm_step(now, now, progm); |
| 41 | 293 return; |
| 294 } | |
| 295 | |
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296 timer = mb_tman_timeout(tman, &progm->words[0].abs_start, |
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297 mb_progm_step, progm); |
| 41 | 298 ASSERT(timer != NULL); |
| 299 } | |
| 300 | |
| 42 | 301 void mb_progm_abort(mb_progm_t *progm, mb_tman_t *tman) { |
| 302 } | |
| 303 | |
| 50 | 304 #ifdef UNITTEST |
| 305 | |
| 306 #include <CUnit/Basic.h> | |
| 307 | |
| 308 typedef struct _mb_dummy mb_dummy_t; | |
| 309 | |
| 310 struct _mb_dummy { | |
| 311 mb_action_t action; | |
| 312 int id; | |
| 313 int *logidx; | |
| 314 int *logs; | |
| 315 }; | |
| 316 | |
| 317 | |
| 318 static void mb_dummy_start(mb_action_t *act, | |
| 319 const mb_timeval_t *now, | |
| 320 const mb_timeval_t *playing_time, | |
| 321 redraw_man_t *rdman) { | |
| 322 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
| 323 | |
| 324 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
| 325 } | |
| 326 | |
| 327 static void mb_dummy_step(mb_action_t *act, | |
| 328 const mb_timeval_t *now, | |
| 329 redraw_man_t *rdman) { | |
| 330 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
| 331 | |
| 332 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
| 333 } | |
| 334 | |
| 335 static void mb_dummy_stop(mb_action_t *act, | |
| 336 const mb_timeval_t *now, | |
| 337 redraw_man_t *rdman) { | |
| 338 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
| 339 | |
| 340 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
| 341 } | |
| 342 | |
| 343 static void mb_dummy_free(mb_action_t *act) { | |
| 344 free(act); | |
| 345 } | |
| 346 | |
| 347 mb_action_t *mb_dummy_new(int id, int *logidx, int *logs, mb_word_t *word) { | |
| 348 mb_dummy_t *dummy; | |
| 349 | |
| 350 dummy = (mb_dummy_t *)malloc(sizeof(mb_dummy_t)); | |
| 351 if(dummy == NULL) | |
| 352 return NULL; | |
| 353 | |
| 354 dummy->id = id; | |
| 355 dummy->logidx = logidx; | |
| 356 dummy->logs = logs; | |
| 357 | |
| 358 dummy->action.start = mb_dummy_start; | |
| 359 dummy->action.step = mb_dummy_step; | |
| 360 dummy->action.stop = mb_dummy_stop; | |
| 361 dummy->action.free = mb_dummy_free; | |
| 362 | |
| 363 mb_word_add_action(word, (mb_action_t *)dummy); | |
| 364 | |
| 365 return (mb_action_t *)dummy; | |
| 366 } | |
| 367 | |
| 368 void test_animate_words(void) { | |
| 369 mb_progm_t *progm; | |
| 370 mb_word_t *word; | |
| 371 mb_action_t *acts[4]; | |
| 372 mb_tman_t *tman; | |
| 373 mb_timeval_t tv1, tv2, now, tmo_after; | |
| 374 int logcnt = 0; | |
| 375 int logs[256]; | |
| 376 int r; | |
| 377 | |
| 378 tman = mb_tman_new(); | |
| 379 CU_ASSERT(tman != NULL); | |
| 380 | |
| 381 progm = mb_progm_new(3, NULL); | |
| 382 CU_ASSERT(progm != NULL); | |
| 383 | |
| 384 MB_TIMEVAL_SET(&tv1, 1, 0); | |
| 385 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL * 3); | |
| 386 word = mb_progm_next_word(progm, &tv1, &tv2); | |
| 387 CU_ASSERT(word != NULL); | |
| 388 acts[0] = mb_dummy_new(0, &logcnt, logs, word); | |
| 389 CU_ASSERT(acts[0] != NULL); | |
| 390 | |
| 391 MB_TIMEVAL_SET(&tv1, 1, STEP_INTERVAL * 4 / 3); | |
| 392 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL / 3); | |
| 393 word = mb_progm_next_word(progm, &tv1, &tv2); | |
| 394 CU_ASSERT(word != NULL); | |
| 395 acts[1] = mb_dummy_new(1, &logcnt, logs, word); | |
| 396 CU_ASSERT(acts[1] != NULL); | |
| 397 | |
| 398 MB_TIMEVAL_SET(&tv1, 1, STEP_INTERVAL * 2); | |
| 399 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL * 3); | |
| 400 word = mb_progm_next_word(progm, &tv1, &tv2); | |
| 401 CU_ASSERT(word != NULL); | |
| 402 acts[2] = mb_dummy_new(2, &logcnt, logs, word); | |
| 403 CU_ASSERT(acts[2] != NULL); | |
| 404 | |
| 405 MB_TIMEVAL_SET(&now, 0, 0); | |
| 406 mb_progm_start(progm, tman, &now); | |
| 407 | |
| 408 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 409 CU_ASSERT(r == 0); | |
| 410 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 1 && | |
| 411 MB_TIMEVAL_USEC(&tmo_after) == 0); | |
| 412 | |
| 413 /* 1.0s */ | |
| 414 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 415 mb_tman_handle_timeout(tman, &now); | |
| 416 CU_ASSERT(logcnt == 1); | |
| 417 | |
| 418 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 419 CU_ASSERT(r == 0); | |
| 420 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 421 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 422 | |
| 423 /* 1.1s */ | |
| 424 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 425 mb_tman_handle_timeout(tman, &now); | |
| 426 CU_ASSERT(logcnt == 4); | |
| 427 | |
| 428 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 429 CU_ASSERT(r == 0); | |
| 430 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 431 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 432 | |
| 433 /* 1.2s */ | |
| 434 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 435 mb_tman_handle_timeout(tman, &now); | |
| 436 CU_ASSERT(logcnt == 6); | |
| 437 | |
| 438 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 439 CU_ASSERT(r == 0); | |
| 440 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 441 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 442 | |
| 443 /* 1.3s */ | |
| 444 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 445 mb_tman_handle_timeout(tman, &now); | |
| 446 CU_ASSERT(logcnt == 8); | |
| 447 | |
| 448 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 449 CU_ASSERT(r == 0); | |
| 450 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 451 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 452 | |
| 453 /* 1.4s */ | |
| 454 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 455 mb_tman_handle_timeout(tman, &now); | |
| 456 CU_ASSERT(logcnt == 9); | |
| 457 | |
| 458 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 459 CU_ASSERT(r == 0); | |
| 460 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
| 461 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
| 462 | |
| 463 /* 1.5s */ | |
| 464 MB_TIMEVAL_ADD(&now, &tmo_after); | |
| 465 mb_tman_handle_timeout(tman, &now); | |
| 466 CU_ASSERT(logcnt == 10); | |
| 467 | |
| 468 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
| 469 CU_ASSERT(r == -1); | |
| 470 | |
| 471 mb_progm_free(progm); | |
| 472 mb_tman_free(tman); | |
| 473 } | |
| 474 | |
| 475 CU_pSuite get_animate_suite(void) { | |
| 476 CU_pSuite suite; | |
| 477 | |
| 478 suite = CU_add_suite("Suite_animate", NULL, NULL); | |
| 479 if(suite == NULL) | |
| 480 return NULL; | |
| 481 | |
| 482 CU_ADD_TEST(suite, test_animate_words); | |
| 483 | |
| 484 return suite; | |
| 485 } | |
| 486 | |
| 487 #endif /* UNITTEST */ |