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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | /** | |
21 | * @file | |
22 | * | |
23 | * Standard API helper functions. | |
24 | */ | |
25 | ||
26 | /* Needed for gettimeofday(), at least on FreeBSD. */ | |
27 | #define _XOPEN_SOURCE 700 | |
28 | ||
29 | #include <config.h> | |
30 | #include <string.h> | |
31 | #include <math.h> | |
32 | #include <sys/time.h> | |
33 | #include <glib.h> | |
34 | #include <libsigrok/libsigrok.h> | |
35 | #include "libsigrok-internal.h" | |
36 | #include "scpi.h" | |
37 | ||
38 | #define LOG_PREFIX "std" | |
39 | ||
40 | SR_PRIV const uint32_t NO_OPTS[1] = {}; | |
41 | ||
42 | /** | |
43 | * Standard driver init() callback API helper. | |
44 | * | |
45 | * This function can be used to simplify most driver's init() API callback. | |
46 | * | |
47 | * Create a new 'struct drv_context' (drvc), assign sr_ctx to it, and | |
48 | * then assign 'drvc' to the 'struct sr_dev_driver' (di) that is passed. | |
49 | * | |
50 | * @param[in] di The driver instance to use. Must not be NULL. | |
51 | * @param[in] sr_ctx The libsigrok context to assign. May be NULL. | |
52 | * | |
53 | * @retval SR_OK Success. | |
54 | * @retval SR_ERR_ARG Invalid argument. | |
55 | */ | |
56 | SR_PRIV int std_init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
57 | { | |
58 | struct drv_context *drvc; | |
59 | ||
60 | if (!di) { | |
61 | sr_err("%s: Invalid argument.", __func__); | |
62 | return SR_ERR_ARG; | |
63 | } | |
64 | ||
65 | drvc = g_malloc0(sizeof(struct drv_context)); | |
66 | drvc->sr_ctx = sr_ctx; | |
67 | drvc->instances = NULL; | |
68 | di->context = drvc; | |
69 | ||
70 | return SR_OK; | |
71 | } | |
72 | ||
73 | /** | |
74 | * Standard driver cleanup() callback API helper. | |
75 | * | |
76 | * This function can be used to simplify most driver's cleanup() API callback. | |
77 | * | |
78 | * Free all device instances by calling sr_dev_clear() and then release any | |
79 | * resources allocated by std_init(). | |
80 | * | |
81 | * @param[in] di The driver instance to use. Must not be NULL. | |
82 | * | |
83 | * @retval SR_OK Success. | |
84 | * @retval SR_ERR_ARG Invalid argument. | |
85 | * @retval other Other error. | |
86 | */ | |
87 | SR_PRIV int std_cleanup(const struct sr_dev_driver *di) | |
88 | { | |
89 | int ret; | |
90 | ||
91 | if (!di) { | |
92 | sr_err("%s: Invalid argument.", __func__); | |
93 | return SR_ERR_ARG; | |
94 | } | |
95 | ||
96 | ret = sr_dev_clear(di); | |
97 | g_free(di->context); | |
98 | ||
99 | return ret; | |
100 | } | |
101 | ||
102 | /** | |
103 | * Dummmy driver dev_open() callback API helper. | |
104 | * | |
105 | * @param[in] sdi The device instance to use. May be NULL (unused). | |
106 | * | |
107 | * @retval SR_OK Success. | |
108 | */ | |
109 | SR_PRIV int std_dummy_dev_open(struct sr_dev_inst *sdi) | |
110 | { | |
111 | (void)sdi; | |
112 | ||
113 | return SR_OK; | |
114 | } | |
115 | ||
116 | /** | |
117 | * Dummmy driver dev_close() callback API helper. | |
118 | * | |
119 | * @param[in] sdi The device instance to use. May be NULL (unused). | |
120 | * | |
121 | * @retval SR_OK Success. | |
122 | */ | |
123 | SR_PRIV int std_dummy_dev_close(struct sr_dev_inst *sdi) | |
124 | { | |
125 | (void)sdi; | |
126 | ||
127 | return SR_OK; | |
128 | } | |
129 | ||
130 | /** | |
131 | * Dummmy driver dev_acquisition_start() callback API helper. | |
132 | * | |
133 | * @param[in] sdi The device instance to use. May be NULL (unused). | |
134 | * | |
135 | * @retval SR_OK Success. | |
136 | */ | |
137 | SR_PRIV int std_dummy_dev_acquisition_start(const struct sr_dev_inst *sdi) | |
138 | { | |
139 | (void)sdi; | |
140 | ||
141 | return SR_OK; | |
142 | } | |
143 | ||
144 | /** | |
145 | * Dummmy driver dev_acquisition_stop() callback API helper. | |
146 | * | |
147 | * @param[in] sdi The device instance to use. May be NULL (unused). | |
148 | * | |
149 | * @retval SR_OK Success. | |
150 | */ | |
151 | SR_PRIV int std_dummy_dev_acquisition_stop(struct sr_dev_inst *sdi) | |
152 | { | |
153 | (void)sdi; | |
154 | ||
155 | return SR_OK; | |
156 | } | |
157 | ||
158 | /** | |
159 | * Standard API helper for sending an SR_DF_HEADER packet. | |
160 | * | |
161 | * This function can be used to simplify most drivers' | |
162 | * dev_acquisition_start() API callback. | |
163 | * | |
164 | * @param[in] sdi The device instance to use. Must not be NULL. | |
165 | * | |
166 | * @retval SR_OK Success. | |
167 | * @retval SR_ERR_ARG Invalid argument. | |
168 | * @retval other Other error. | |
169 | */ | |
170 | SR_PRIV int std_session_send_df_header(const struct sr_dev_inst *sdi) | |
171 | { | |
172 | const char *prefix; | |
173 | int ret; | |
174 | struct sr_datafeed_packet packet; | |
175 | struct sr_datafeed_header header; | |
176 | ||
177 | if (!sdi) { | |
178 | sr_err("%s: Invalid argument.", __func__); | |
179 | return SR_ERR_ARG; | |
180 | } | |
181 | ||
182 | prefix = (sdi->driver) ? sdi->driver->name : "unknown"; | |
183 | ||
184 | /* Send header packet to the session bus. */ | |
185 | packet.type = SR_DF_HEADER; | |
186 | packet.payload = (uint8_t *)&header; | |
187 | header.feed_version = 1; | |
188 | gettimeofday(&header.starttime, NULL); | |
189 | ||
190 | if ((ret = sr_session_send(sdi, &packet)) < 0) { | |
191 | sr_err("%s: Failed to send SR_DF_HEADER packet: %d.", prefix, ret); | |
192 | return ret; | |
193 | } | |
194 | ||
195 | return SR_OK; | |
196 | } | |
197 | ||
198 | static int send_df_without_payload(const struct sr_dev_inst *sdi, uint16_t packet_type) | |
199 | { | |
200 | const char *prefix; | |
201 | int ret; | |
202 | struct sr_datafeed_packet packet; | |
203 | ||
204 | if (!sdi) { | |
205 | sr_err("%s: Invalid argument.", __func__); | |
206 | return SR_ERR_ARG; | |
207 | } | |
208 | ||
209 | prefix = (sdi->driver) ? sdi->driver->name : "unknown"; | |
210 | ||
211 | packet.type = packet_type; | |
212 | packet.payload = NULL; | |
213 | ||
214 | if ((ret = sr_session_send(sdi, &packet)) < 0) { | |
215 | sr_err("%s: Failed to send packet of type %d: %d.", prefix, packet_type, ret); | |
216 | return ret; | |
217 | } | |
218 | ||
219 | return SR_OK; | |
220 | } | |
221 | ||
222 | /** | |
223 | * Standard API helper for sending an SR_DF_END packet. | |
224 | * | |
225 | * This function can be used to simplify most drivers' | |
226 | * dev_acquisition_stop() API callback. | |
227 | * | |
228 | * @param[in] sdi The device instance to use. Must not be NULL. | |
229 | * | |
230 | * @retval SR_OK Success. | |
231 | * @retval SR_ERR_ARG Invalid argument. | |
232 | * @retval other Other error. | |
233 | */ | |
234 | SR_PRIV int std_session_send_df_end(const struct sr_dev_inst *sdi) | |
235 | { | |
236 | return send_df_without_payload(sdi, SR_DF_END); | |
237 | } | |
238 | ||
239 | /** | |
240 | * Standard API helper for sending an SR_DF_TRIGGER packet. | |
241 | * | |
242 | * This function can be used to simplify most drivers' trigger handling. | |
243 | * | |
244 | * @param[in] sdi The device instance to use. Must not be NULL. | |
245 | * | |
246 | * @retval SR_OK Success. | |
247 | * @retval SR_ERR_ARG Invalid argument. | |
248 | * @retval other Other error. | |
249 | */ | |
250 | SR_PRIV int std_session_send_df_trigger(const struct sr_dev_inst *sdi) | |
251 | { | |
252 | return send_df_without_payload(sdi, SR_DF_TRIGGER); | |
253 | } | |
254 | ||
255 | /** | |
256 | * Standard API helper for sending an SR_DF_FRAME_BEGIN packet. | |
257 | * | |
258 | * This function can be used to simplify most drivers' frame handling. | |
259 | * | |
260 | * @param[in] sdi The device instance to use. Must not be NULL. | |
261 | * | |
262 | * @retval SR_OK Success. | |
263 | * @retval SR_ERR_ARG Invalid argument. | |
264 | * @retval other Other error. | |
265 | */ | |
266 | SR_PRIV int std_session_send_df_frame_begin(const struct sr_dev_inst *sdi) | |
267 | { | |
268 | return send_df_without_payload(sdi, SR_DF_FRAME_BEGIN); | |
269 | } | |
270 | ||
271 | /** | |
272 | * Standard API helper for sending an SR_DF_FRAME_END packet. | |
273 | * | |
274 | * This function can be used to simplify most drivers' frame handling. | |
275 | * | |
276 | * @param[in] sdi The device instance to use. Must not be NULL. | |
277 | * | |
278 | * @retval SR_OK Success. | |
279 | * @retval SR_ERR_ARG Invalid argument. | |
280 | * @retval other Other error. | |
281 | */ | |
282 | SR_PRIV int std_session_send_df_frame_end(const struct sr_dev_inst *sdi) | |
283 | { | |
284 | return send_df_without_payload(sdi, SR_DF_FRAME_END); | |
285 | } | |
286 | ||
287 | #ifdef HAVE_SERIAL_COMM | |
288 | ||
289 | /** | |
290 | * Standard serial driver dev_open() callback API helper. | |
291 | * | |
292 | * This function can be used to implement the dev_open() driver API | |
293 | * callback in drivers that use a serial port. The port is opened | |
294 | * with the SERIAL_RDWR flag. | |
295 | * | |
296 | * @param[in] sdi The device instance to use. Must not be NULL. | |
297 | * | |
298 | * @retval SR_OK Success. | |
299 | * @retval SR_ERR_ARG Invalid argument. | |
300 | * @retval other Serial port open failed. | |
301 | */ | |
302 | SR_PRIV int std_serial_dev_open(struct sr_dev_inst *sdi) | |
303 | { | |
304 | struct sr_serial_dev_inst *serial; | |
305 | ||
306 | if (!sdi) { | |
307 | sr_err("%s: Invalid argument.", __func__); | |
308 | return SR_ERR_ARG; | |
309 | } | |
310 | ||
311 | serial = sdi->conn; | |
312 | ||
313 | return serial_open(serial, SERIAL_RDWR); | |
314 | } | |
315 | ||
316 | /** | |
317 | * Standard serial driver dev_close() callback API helper. | |
318 | * | |
319 | * This function can be used to implement the dev_close() driver API | |
320 | * callback in drivers that use a serial port. | |
321 | * | |
322 | * @param[in] sdi The device instance to use. Must not be NULL. | |
323 | * | |
324 | * @retval SR_OK Success. | |
325 | * @retval SR_ERR_ARG Invalid argument. | |
326 | * @retval other Serial port close failed. | |
327 | */ | |
328 | SR_PRIV int std_serial_dev_close(struct sr_dev_inst *sdi) | |
329 | { | |
330 | struct sr_serial_dev_inst *serial; | |
331 | ||
332 | if (!sdi) { | |
333 | sr_err("%s: Invalid argument.", __func__); | |
334 | return SR_ERR_ARG; | |
335 | } | |
336 | ||
337 | serial = sdi->conn; | |
338 | ||
339 | return serial_close(serial); | |
340 | } | |
341 | ||
342 | /** | |
343 | * Standard serial driver dev_acquisition_stop() callback API helper. | |
344 | * | |
345 | * This function can be used to simplify most (serial port based) drivers' | |
346 | * dev_acquisition_stop() API callback. | |
347 | * | |
348 | * @param[in] sdi The device instance for which acquisition should stop. | |
349 | * Must not be NULL. | |
350 | * | |
351 | * @retval SR_OK Success. | |
352 | * @retval SR_ERR_ARG Invalid argument. | |
353 | * @retval other Other error. | |
354 | */ | |
355 | SR_PRIV int std_serial_dev_acquisition_stop(struct sr_dev_inst *sdi) | |
356 | { | |
357 | struct sr_serial_dev_inst *serial; | |
358 | const char *prefix; | |
359 | int ret; | |
360 | ||
361 | if (!sdi) { | |
362 | sr_err("%s: Invalid argument.", __func__); | |
363 | return SR_ERR_ARG; | |
364 | } | |
365 | ||
366 | serial = sdi->conn; | |
367 | prefix = sdi->driver->name; | |
368 | ||
369 | if ((ret = serial_source_remove(sdi->session, serial)) < 0) { | |
370 | sr_err("%s: Failed to remove source: %d.", prefix, ret); | |
371 | return ret; | |
372 | } | |
373 | ||
374 | return std_session_send_df_end(sdi); | |
375 | } | |
376 | ||
377 | #endif | |
378 | ||
379 | /** | |
380 | * Standard driver dev_clear() callback API helper. | |
381 | * | |
382 | * Clear driver, this means, close all instances. | |
383 | * | |
384 | * This function can be used to implement the dev_clear() driver API | |
385 | * callback. dev_close() is called before every sr_dev_inst is cleared. | |
386 | * | |
387 | * The only limitation is driver-specific device contexts (sdi->priv / devc). | |
388 | * These are freed, but any dynamic allocation within structs stored | |
389 | * there cannot be freed. | |
390 | * | |
391 | * @param[in] driver The driver which will have its instances released. | |
392 | * Must not be NULL. | |
393 | * @param[in] clear_private If not NULL, this points to a function called | |
394 | * with sdi->priv (devc) as argument. The function can then clear | |
395 | * any device instance-specific resources kept there. | |
396 | * It must NOT clear the struct pointed to by sdi->priv (devc), | |
397 | * since this function will always free it after clear_private() | |
398 | * has run. | |
399 | * | |
400 | * @retval SR_OK Success. | |
401 | * @retval SR_ERR_ARG Invalid argument. | |
402 | * @retval SR_ERR_BUG Implementation bug. | |
403 | * @retval other Other error. | |
404 | */ | |
405 | SR_PRIV int std_dev_clear_with_callback(const struct sr_dev_driver *driver, | |
406 | std_dev_clear_callback clear_private) | |
407 | { | |
408 | struct drv_context *drvc; | |
409 | struct sr_dev_inst *sdi; | |
410 | GSList *l; | |
411 | int ret; | |
412 | ||
413 | if (!driver) { | |
414 | sr_err("%s: Invalid argument.", __func__); | |
415 | return SR_ERR_ARG; | |
416 | } | |
417 | ||
418 | drvc = driver->context; /* Caller checked for context != NULL. */ | |
419 | ||
420 | ret = SR_OK; | |
421 | for (l = drvc->instances; l; l = l->next) { | |
422 | if (!(sdi = l->data)) { | |
423 | sr_err("%s: Invalid device instance.", __func__); | |
424 | ret = SR_ERR_BUG; | |
425 | continue; | |
426 | } | |
427 | if (driver->dev_close) | |
428 | driver->dev_close(sdi); | |
429 | ||
430 | if (sdi->conn) { | |
431 | #ifdef HAVE_SERIAL_COMM | |
432 | if (sdi->inst_type == SR_INST_SERIAL) | |
433 | sr_serial_dev_inst_free(sdi->conn); | |
434 | #endif | |
435 | #ifdef HAVE_LIBUSB_1_0 | |
436 | if (sdi->inst_type == SR_INST_USB) | |
437 | sr_usb_dev_inst_free(sdi->conn); | |
438 | #endif | |
439 | if (sdi->inst_type == SR_INST_SCPI) | |
440 | sr_scpi_free(sdi->conn); | |
441 | if (sdi->inst_type == SR_INST_MODBUS) | |
442 | sr_modbus_free(sdi->conn); | |
443 | } | |
444 | ||
445 | /* Clear driver-specific stuff, if any. */ | |
446 | if (clear_private) | |
447 | clear_private(sdi->priv); | |
448 | ||
449 | /* Clear sdi->priv (devc). */ | |
450 | g_free(sdi->priv); | |
451 | ||
452 | sr_dev_inst_free(sdi); | |
453 | } | |
454 | ||
455 | g_slist_free(drvc->instances); | |
456 | drvc->instances = NULL; | |
457 | ||
458 | return ret; | |
459 | } | |
460 | ||
461 | SR_PRIV int std_dev_clear(const struct sr_dev_driver *driver) | |
462 | { | |
463 | return std_dev_clear_with_callback(driver, NULL); | |
464 | } | |
465 | ||
466 | /** | |
467 | * Standard driver dev_list() callback API helper. | |
468 | * | |
469 | * This function can be used as the dev_list() callback by most drivers. | |
470 | * | |
471 | * Return the devices contained in the driver context instances list. | |
472 | * | |
473 | * @param[in] di The driver instance to use. Must not be NULL. | |
474 | * | |
475 | * @retval NULL Error, or the list is empty. | |
476 | * @retval other The list of device instances of this driver. | |
477 | */ | |
478 | SR_PRIV GSList *std_dev_list(const struct sr_dev_driver *di) | |
479 | { | |
480 | struct drv_context *drvc; | |
481 | ||
482 | if (!di) { | |
483 | sr_err("%s: Invalid argument.", __func__); | |
484 | return NULL; | |
485 | } | |
486 | ||
487 | drvc = di->context; | |
488 | ||
489 | return drvc->instances; | |
490 | } | |
491 | ||
492 | /** | |
493 | * Standard driver scan() callback API helper. | |
494 | * | |
495 | * This function can be used to perform common tasks required by a driver's | |
496 | * scan() callback. It will initialize the driver for each device on the list | |
497 | * and add the devices on the list to the driver's device instance list. | |
498 | * Usually it should be used as the last step in the scan() callback, right | |
499 | * before returning. | |
500 | * | |
501 | * Note: This function can only be used if std_init() has been called | |
502 | * previously by the driver. | |
503 | * | |
504 | * Example: | |
505 | * @code{c} | |
506 | * static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
507 | * { | |
508 | * struct GSList *device; | |
509 | * struct sr_dev_inst *sdi; | |
510 | * | |
511 | * sdi = g_new0(sr_dev_inst, 1); | |
512 | * sdi->vendor = ...; | |
513 | * ... | |
514 | * devices = g_slist_append(devices, sdi); | |
515 | * ... | |
516 | * return std_scan_complete(di, devices); | |
517 | * } | |
518 | * @endcode | |
519 | * | |
520 | * @param[in] di The driver instance to use. Must not be NULL. | |
521 | * @param[in] devices List of newly discovered devices (struct sr_dev_inst). | |
522 | * May be NULL. | |
523 | * | |
524 | * @return The @p devices list. | |
525 | */ | |
526 | SR_PRIV GSList *std_scan_complete(struct sr_dev_driver *di, GSList *devices) | |
527 | { | |
528 | struct drv_context *drvc; | |
529 | GSList *l; | |
530 | ||
531 | if (!di) { | |
532 | sr_err("Invalid driver instance (di), cannot complete scan."); | |
533 | return NULL; | |
534 | } | |
535 | ||
536 | drvc = di->context; | |
537 | ||
538 | for (l = devices; l; l = l->next) { | |
539 | struct sr_dev_inst *sdi = l->data; | |
540 | if (!sdi) { | |
541 | sr_err("Invalid device instance, cannot complete scan."); | |
542 | return NULL; | |
543 | } | |
544 | sdi->driver = di; | |
545 | } | |
546 | ||
547 | drvc->instances = g_slist_concat(drvc->instances, g_slist_copy(devices)); | |
548 | ||
549 | return devices; | |
550 | } | |
551 | ||
552 | SR_PRIV int std_opts_config_list(uint32_t key, GVariant **data, | |
553 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg, | |
554 | const uint32_t scanopts[], size_t scansize, const uint32_t drvopts[], | |
555 | size_t drvsize, const uint32_t devopts[], size_t devsize) | |
556 | { | |
557 | switch (key) { | |
558 | case SR_CONF_SCAN_OPTIONS: | |
559 | /* Always return scanopts, regardless of sdi or cg. */ | |
560 | if (!scanopts || scanopts == NO_OPTS) | |
561 | return SR_ERR_ARG; | |
562 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
563 | scanopts, scansize, sizeof(uint32_t)); | |
564 | break; | |
565 | case SR_CONF_DEVICE_OPTIONS: | |
566 | if (!sdi) { | |
567 | /* sdi == NULL: return drvopts. */ | |
568 | if (!drvopts || drvopts == NO_OPTS) | |
569 | return SR_ERR_ARG; | |
570 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
571 | drvopts, drvsize, sizeof(uint32_t)); | |
572 | } else if (sdi && !cg) { | |
573 | /* sdi != NULL, cg == NULL: return devopts. */ | |
574 | if (!devopts || devopts == NO_OPTS) | |
575 | return SR_ERR_ARG; | |
576 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
577 | devopts, devsize, sizeof(uint32_t)); | |
578 | } else { | |
579 | /* | |
580 | * Note: sdi != NULL, cg != NULL is not handled by | |
581 | * this function since it's very driver-specific. | |
582 | */ | |
583 | sr_err("%s: %s: sdi/cg != NULL: not handling.", | |
584 | sdi->driver->name, __func__); | |
585 | return SR_ERR_ARG; | |
586 | } | |
587 | break; | |
588 | default: | |
589 | return SR_ERR_NA; | |
590 | } | |
591 | ||
592 | return SR_OK; | |
593 | } | |
594 | ||
595 | SR_PRIV GVariant *std_gvar_tuple_array(const uint64_t a[][2], unsigned int n) | |
596 | { | |
597 | unsigned int i; | |
598 | GVariant *rational[2]; | |
599 | GVariantBuilder gvb; | |
600 | ||
601 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_TUPLE); | |
602 | ||
603 | for (i = 0; i < n; i++) { | |
604 | rational[0] = g_variant_new_uint64(a[i][0]); | |
605 | rational[1] = g_variant_new_uint64(a[i][1]); | |
606 | ||
607 | /* FIXME: Valgrind reports a memory leak here. */ | |
608 | g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2)); | |
609 | } | |
610 | ||
611 | return g_variant_builder_end(&gvb); | |
612 | } | |
613 | ||
614 | SR_PRIV GVariant *std_gvar_tuple_rational(const struct sr_rational *r, unsigned int n) | |
615 | { | |
616 | unsigned int i; | |
617 | GVariant *rational[2]; | |
618 | GVariantBuilder gvb; | |
619 | ||
620 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_TUPLE); | |
621 | ||
622 | for (i = 0; i < n; i++) { | |
623 | rational[0] = g_variant_new_uint64(r[i].p); | |
624 | rational[1] = g_variant_new_uint64(r[i].q); | |
625 | ||
626 | /* FIXME: Valgrind reports a memory leak here. */ | |
627 | g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2)); | |
628 | } | |
629 | ||
630 | return g_variant_builder_end(&gvb); | |
631 | } | |
632 | ||
633 | static GVariant *samplerate_helper(const uint64_t samplerates[], unsigned int n, const char *str) | |
634 | { | |
635 | GVariant *gvar; | |
636 | GVariantBuilder gvb; | |
637 | ||
638 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
639 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
640 | n, sizeof(uint64_t)); | |
641 | g_variant_builder_add(&gvb, "{sv}", str, gvar); | |
642 | ||
643 | return g_variant_builder_end(&gvb); | |
644 | } | |
645 | ||
646 | SR_PRIV GVariant *std_gvar_samplerates(const uint64_t samplerates[], unsigned int n) | |
647 | { | |
648 | return samplerate_helper(samplerates, n, "samplerates"); | |
649 | } | |
650 | ||
651 | SR_PRIV GVariant *std_gvar_samplerates_steps(const uint64_t samplerates[], unsigned int n) | |
652 | { | |
653 | return samplerate_helper(samplerates, n, "samplerate-steps"); | |
654 | } | |
655 | ||
656 | SR_PRIV GVariant *std_gvar_min_max_step(double min, double max, double step) | |
657 | { | |
658 | GVariantBuilder gvb; | |
659 | ||
660 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
661 | ||
662 | g_variant_builder_add_value(&gvb, g_variant_new_double(min)); | |
663 | g_variant_builder_add_value(&gvb, g_variant_new_double(max)); | |
664 | g_variant_builder_add_value(&gvb, g_variant_new_double(step)); | |
665 | ||
666 | return g_variant_builder_end(&gvb); | |
667 | } | |
668 | ||
669 | SR_PRIV GVariant *std_gvar_min_max_step_array(const double a[3]) | |
670 | { | |
671 | unsigned int i; | |
672 | GVariantBuilder gvb; | |
673 | ||
674 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
675 | ||
676 | for (i = 0; i < 3; i++) | |
677 | g_variant_builder_add_value(&gvb, g_variant_new_double(a[i])); | |
678 | ||
679 | return g_variant_builder_end(&gvb); | |
680 | } | |
681 | ||
682 | SR_PRIV GVariant *std_gvar_min_max_step_thresholds(const double min, const double max, const double step) | |
683 | { | |
684 | double d, v; | |
685 | GVariant *gvar, *range[2]; | |
686 | GVariantBuilder gvb; | |
687 | ||
688 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
689 | ||
690 | for (d = min; d <= max; d += step) { | |
691 | /* | |
692 | * We will never see exactly 0.0 because of the error we're | |
693 | * accumulating, so catch the "zero" value and force it to be 0. | |
694 | */ | |
695 | v = ((d > (-step / 2)) && (d < (step / 2))) ? 0 : d; | |
696 | ||
697 | range[0] = g_variant_new_double(v); | |
698 | range[1] = g_variant_new_double(v); | |
699 | ||
700 | gvar = g_variant_new_tuple(range, 2); | |
701 | g_variant_builder_add_value(&gvb, gvar); | |
702 | } | |
703 | ||
704 | return g_variant_builder_end(&gvb); | |
705 | } | |
706 | ||
707 | SR_PRIV GVariant *std_gvar_tuple_u64(uint64_t low, uint64_t high) | |
708 | { | |
709 | GVariant *range[2]; | |
710 | ||
711 | range[0] = g_variant_new_uint64(low); | |
712 | range[1] = g_variant_new_uint64(high); | |
713 | ||
714 | return g_variant_new_tuple(range, 2); | |
715 | } | |
716 | ||
717 | SR_PRIV GVariant *std_gvar_tuple_double(double low, double high) | |
718 | { | |
719 | GVariant *range[2]; | |
720 | ||
721 | range[0] = g_variant_new_double(low); | |
722 | range[1] = g_variant_new_double(high); | |
723 | ||
724 | return g_variant_new_tuple(range, 2); | |
725 | } | |
726 | ||
727 | SR_PRIV GVariant *std_gvar_array_i32(const int32_t a[], unsigned int n) | |
728 | { | |
729 | return g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
730 | a, n, sizeof(int32_t)); | |
731 | } | |
732 | ||
733 | SR_PRIV GVariant *std_gvar_array_u32(const uint32_t a[], unsigned int n) | |
734 | { | |
735 | return g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
736 | a, n, sizeof(uint32_t)); | |
737 | } | |
738 | ||
739 | SR_PRIV GVariant *std_gvar_array_u64(const uint64_t a[], unsigned int n) | |
740 | { | |
741 | return g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
742 | a, n, sizeof(uint64_t)); | |
743 | } | |
744 | ||
745 | SR_PRIV GVariant *std_gvar_array_str(const char *a[], unsigned int n) | |
746 | { | |
747 | GVariant *gvar; | |
748 | GVariantBuilder *builder; | |
749 | unsigned int i; | |
750 | ||
751 | builder = g_variant_builder_new(G_VARIANT_TYPE ("as")); | |
752 | ||
753 | for (i = 0; i < n; i++) | |
754 | g_variant_builder_add(builder, "s", a[i]); | |
755 | ||
756 | gvar = g_variant_new("as", builder); | |
757 | g_variant_builder_unref(builder); | |
758 | ||
759 | return gvar; | |
760 | } | |
761 | ||
762 | SR_PRIV GVariant *std_gvar_thresholds(const double a[][2], unsigned int n) | |
763 | { | |
764 | unsigned int i; | |
765 | GVariant *gvar, *range[2]; | |
766 | GVariantBuilder gvb; | |
767 | ||
768 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
769 | ||
770 | for (i = 0; i < n; i++) { | |
771 | range[0] = g_variant_new_double(a[i][0]); | |
772 | range[1] = g_variant_new_double(a[i][1]); | |
773 | gvar = g_variant_new_tuple(range, 2); | |
774 | g_variant_builder_add_value(&gvb, gvar); | |
775 | } | |
776 | ||
777 | return g_variant_builder_end(&gvb); | |
778 | } | |
779 | ||
780 | /* Return the index of 'data' in the array 'arr' (or -1). */ | |
781 | static int find_in_array(GVariant *data, const GVariantType *type, | |
782 | const void *arr, unsigned int n) | |
783 | { | |
784 | const char * const *sarr; | |
785 | const char *s; | |
786 | const uint64_t *u64arr; | |
787 | const uint8_t *u8arr; | |
788 | uint64_t u64; | |
789 | uint8_t u8; | |
790 | unsigned int i; | |
791 | ||
792 | if (!g_variant_is_of_type(data, type)) | |
793 | return -1; | |
794 | ||
795 | switch (g_variant_classify(data)) { | |
796 | case G_VARIANT_CLASS_STRING: | |
797 | s = g_variant_get_string(data, NULL); | |
798 | sarr = arr; | |
799 | ||
800 | for (i = 0; i < n; i++) | |
801 | if (!strcmp(s, sarr[i])) | |
802 | return i; | |
803 | break; | |
804 | case G_VARIANT_CLASS_UINT64: | |
805 | u64 = g_variant_get_uint64(data); | |
806 | u64arr = arr; | |
807 | ||
808 | for (i = 0; i < n; i++) | |
809 | if (u64 == u64arr[i]) | |
810 | return i; | |
811 | break; | |
812 | case G_VARIANT_CLASS_BYTE: | |
813 | u8 = g_variant_get_byte(data); | |
814 | u8arr = arr; | |
815 | ||
816 | for (i = 0; i < n; i++) | |
817 | if (u8 == u8arr[i]) | |
818 | return i; | |
819 | default: | |
820 | break; | |
821 | } | |
822 | ||
823 | return -1; | |
824 | } | |
825 | ||
826 | SR_PRIV int std_str_idx(GVariant *data, const char *a[], unsigned int n) | |
827 | { | |
828 | return find_in_array(data, G_VARIANT_TYPE_STRING, a, n); | |
829 | } | |
830 | ||
831 | SR_PRIV int std_u64_idx(GVariant *data, const uint64_t a[], unsigned int n) | |
832 | { | |
833 | return find_in_array(data, G_VARIANT_TYPE_UINT64, a, n); | |
834 | } | |
835 | ||
836 | SR_PRIV int std_u8_idx(GVariant *data, const uint8_t a[], unsigned int n) | |
837 | { | |
838 | return find_in_array(data, G_VARIANT_TYPE_BYTE, a, n); | |
839 | } | |
840 | ||
841 | SR_PRIV int std_str_idx_s(const char *s, const char *a[], unsigned int n) | |
842 | { | |
843 | int idx; | |
844 | GVariant *data; | |
845 | ||
846 | data = g_variant_new_string(s); | |
847 | idx = find_in_array(data, G_VARIANT_TYPE_STRING, a, n); | |
848 | g_variant_unref(data); | |
849 | ||
850 | return idx; | |
851 | } | |
852 | ||
853 | SR_PRIV int std_u8_idx_s(uint8_t b, const uint8_t a[], unsigned int n) | |
854 | { | |
855 | int idx; | |
856 | GVariant *data; | |
857 | ||
858 | data = g_variant_new_byte(b); | |
859 | idx = find_in_array(data, G_VARIANT_TYPE_BYTE, a, n); | |
860 | g_variant_unref(data); | |
861 | ||
862 | return idx; | |
863 | } | |
864 | ||
865 | SR_PRIV int std_u64_tuple_idx(GVariant *data, const uint64_t a[][2], unsigned int n) | |
866 | { | |
867 | unsigned int i; | |
868 | uint64_t low, high; | |
869 | ||
870 | g_variant_get(data, "(tt)", &low, &high); | |
871 | ||
872 | for (i = 0; i < n; i++) | |
873 | if (a[i][0] == low && a[i][1] == high) | |
874 | return i; | |
875 | ||
876 | return -1; | |
877 | } | |
878 | ||
879 | SR_PRIV int std_double_tuple_idx(GVariant *data, const double a[][2], unsigned int n) | |
880 | { | |
881 | unsigned int i; | |
882 | double low, high; | |
883 | ||
884 | g_variant_get(data, "(dd)", &low, &high); | |
885 | ||
886 | for (i = 0; i < n; i++) | |
887 | if ((fabs(a[i][0] - low) < 0.1) && ((fabs(a[i][1] - high) < 0.1))) | |
888 | return i; | |
889 | ||
890 | return -1; | |
891 | } | |
892 | ||
893 | SR_PRIV int std_double_tuple_idx_d0(const double d, const double a[][2], unsigned int n) | |
894 | { | |
895 | unsigned int i; | |
896 | ||
897 | for (i = 0; i < n; i++) | |
898 | if (d == a[i][0]) | |
899 | return i; | |
900 | ||
901 | return -1; | |
902 | } | |
903 | ||
904 | SR_PRIV int std_cg_idx(const struct sr_channel_group *cg, struct sr_channel_group *a[], unsigned int n) | |
905 | { | |
906 | unsigned int i; | |
907 | ||
908 | for (i = 0; i < n; i++) | |
909 | if (cg == a[i]) | |
910 | return i; | |
911 | ||
912 | return -1; | |
913 | } | |
914 | ||
915 | SR_PRIV int std_dummy_set_params(struct sr_serial_dev_inst *serial, | |
916 | int baudrate, int bits, int parity, int stopbits, | |
917 | int flowcontrol, int rts, int dtr) | |
918 | { | |
919 | (void)serial; | |
920 | (void)baudrate; | |
921 | (void)bits; | |
922 | (void)parity; | |
923 | (void)stopbits; | |
924 | (void)flowcontrol; | |
925 | (void)rts; | |
926 | (void)dtr; | |
927 | ||
928 | return SR_OK; | |
929 | } | |
930 |