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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> | |
5 | * Copyright (C) 2012 Peter Stuge <peter@stuge.se> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <glib.h> | |
23 | #ifdef _WIN32 | |
24 | #include <winsock2.h> | |
25 | #endif | |
26 | #include <libsigrok/libsigrok.h> | |
27 | #include "libsigrok-internal.h" | |
28 | #include "minilzo/minilzo.h" | |
29 | ||
30 | /** @cond PRIVATE */ | |
31 | #define LOG_PREFIX "backend" | |
32 | /** @endcond */ | |
33 | ||
34 | /** | |
35 | * @mainpage libsigrok API | |
36 | * | |
37 | * @section sec_intro Introduction | |
38 | * | |
39 | * The <a href="http://sigrok.org">sigrok</a> project aims at creating a | |
40 | * portable, cross-platform, Free/Libre/Open-Source signal analysis software | |
41 | * suite that supports various device types (such as logic analyzers, | |
42 | * oscilloscopes, multimeters, and more). | |
43 | * | |
44 | * <a href="http://sigrok.org/wiki/Libsigrok">libsigrok</a> is a shared | |
45 | * library written in C which provides the basic API for talking to | |
46 | * <a href="http://sigrok.org/wiki/Supported_hardware">supported hardware</a> | |
47 | * and reading/writing the acquired data into various | |
48 | * <a href="http://sigrok.org/wiki/Input_output_formats">input/output | |
49 | * file formats</a>. | |
50 | * | |
51 | * @section sec_api API reference | |
52 | * | |
53 | * See the "Modules" page for an introduction to various libsigrok | |
54 | * related topics and the detailed API documentation of the respective | |
55 | * functions. | |
56 | * | |
57 | * You can also browse the API documentation by file, or review all | |
58 | * data structures. | |
59 | * | |
60 | * @section sec_mailinglists Mailing lists | |
61 | * | |
62 | * There is one mailing list for sigrok/libsigrok: <a href="https://lists.sourceforge.net/lists/listinfo/sigrok-devel">sigrok-devel</a>. | |
63 | * | |
64 | * @section sec_irc IRC | |
65 | * | |
66 | * You can find the sigrok developers in the | |
67 | * <a href="ircs://irc.libera.chat/#sigrok">\#sigrok</a> | |
68 | * IRC channel on Libera.Chat. | |
69 | * | |
70 | * @section sec_website Website | |
71 | * | |
72 | * <a href="http://sigrok.org/wiki/Libsigrok">sigrok.org/wiki/Libsigrok</a> | |
73 | */ | |
74 | ||
75 | /** | |
76 | * @file | |
77 | * | |
78 | * Initializing and shutting down libsigrok. | |
79 | */ | |
80 | ||
81 | /** | |
82 | * @defgroup grp_init Initialization | |
83 | * | |
84 | * Initializing and shutting down libsigrok. | |
85 | * | |
86 | * Before using any of the libsigrok functionality (except for | |
87 | * sr_log_loglevel_set()), sr_init() must be called to initialize the | |
88 | * library, which will return a struct sr_context when the initialization | |
89 | * was successful. | |
90 | * | |
91 | * When libsigrok functionality is no longer needed, sr_exit() should be | |
92 | * called, which will (among other things) free the struct sr_context. | |
93 | * | |
94 | * Example for a minimal program using libsigrok: | |
95 | * | |
96 | * @code{.c} | |
97 | * #include <stdio.h> | |
98 | * #include <libsigrok/libsigrok.h> | |
99 | * | |
100 | * int main(int argc, char **argv) | |
101 | * { | |
102 | * int ret; | |
103 | * struct sr_context *sr_ctx; | |
104 | * | |
105 | * if ((ret = sr_init(&sr_ctx)) != SR_OK) { | |
106 | * printf("Error initializing libsigrok (%s): %s.\n", | |
107 | * sr_strerror_name(ret), sr_strerror(ret)); | |
108 | * return 1; | |
109 | * } | |
110 | * | |
111 | * // Use libsigrok functions here... | |
112 | * | |
113 | * if ((ret = sr_exit(sr_ctx)) != SR_OK) { | |
114 | * printf("Error shutting down libsigrok (%s): %s.\n", | |
115 | * sr_strerror_name(ret), sr_strerror(ret)); | |
116 | * return 1; | |
117 | * } | |
118 | * | |
119 | * return 0; | |
120 | * } | |
121 | * @endcode | |
122 | * | |
123 | * @{ | |
124 | */ | |
125 | ||
126 | SR_API GSList *sr_buildinfo_libs_get(void) | |
127 | { | |
128 | GSList *l = NULL, *m = NULL; | |
129 | #if defined(HAVE_LIBUSB_1_0) && !defined(__FreeBSD__) | |
130 | const struct libusb_version *lv; | |
131 | #endif | |
132 | ||
133 | m = g_slist_append(NULL, g_strdup("glib")); | |
134 | m = g_slist_append(m, g_strdup_printf("%d.%d.%d (rt: %d.%d.%d/%d:%d)", | |
135 | GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION, GLIB_MICRO_VERSION, | |
136 | glib_major_version, glib_minor_version, glib_micro_version, | |
137 | glib_binary_age, glib_interface_age)); | |
138 | l = g_slist_append(l, m); | |
139 | ||
140 | m = g_slist_append(NULL, g_strdup("zlib")); | |
141 | m = g_slist_append(m, g_strdup_printf("%s", CONF_ZLIB_VERSION)); | |
142 | l = g_slist_append(l, m); | |
143 | ||
144 | m = g_slist_append(NULL, g_strdup("libzip")); | |
145 | m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBZIP_VERSION)); | |
146 | l = g_slist_append(l, m); | |
147 | ||
148 | m = g_slist_append(NULL, g_strdup("minilzo")); | |
149 | m = g_slist_append(m, g_strdup_printf("%s", lzo_version_string())); | |
150 | l = g_slist_append(l, m); | |
151 | ||
152 | #ifdef HAVE_LIBSERIALPORT | |
153 | m = g_slist_append(NULL, g_strdup("libserialport")); | |
154 | m = g_slist_append(m, g_strdup_printf("%s/%s (rt: %s/%s)", | |
155 | SP_PACKAGE_VERSION_STRING, SP_LIB_VERSION_STRING, | |
156 | sp_get_package_version_string(), sp_get_lib_version_string())); | |
157 | l = g_slist_append(l, m); | |
158 | #endif | |
159 | #ifdef HAVE_LIBUSB_1_0 | |
160 | m = g_slist_append(NULL, g_strdup("libusb-1.0")); | |
161 | #ifdef __FreeBSD__ | |
162 | m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBUSB_1_0_VERSION)); | |
163 | #else | |
164 | lv = libusb_get_version(); | |
165 | m = g_slist_append(m, g_strdup_printf("%d.%d.%d.%d%s API 0x%08x", | |
166 | lv->major, lv->minor, lv->micro, lv->nano, lv->rc, | |
167 | #if defined(LIBUSB_API_VERSION) | |
168 | LIBUSB_API_VERSION | |
169 | #elif defined(LIBUSBX_API_VERSION) | |
170 | LIBUSBX_API_VERSION | |
171 | #endif | |
172 | )); | |
173 | #endif | |
174 | l = g_slist_append(l, m); | |
175 | #endif | |
176 | #ifdef HAVE_LIBHIDAPI | |
177 | m = g_slist_append(NULL, g_strdup("hidapi")); | |
178 | m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBHIDAPI_VERSION)); | |
179 | l = g_slist_append(l, m); | |
180 | #endif | |
181 | #ifdef HAVE_LIBBLUEZ | |
182 | m = g_slist_append(NULL, g_strdup("bluez")); | |
183 | m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBBLUEZ_VERSION)); | |
184 | l = g_slist_append(l, m); | |
185 | #endif | |
186 | #ifdef HAVE_LIBFTDI | |
187 | m = g_slist_append(NULL, g_strdup("libftdi")); | |
188 | m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBFTDI_VERSION)); | |
189 | l = g_slist_append(l, m); | |
190 | #endif | |
191 | #ifdef HAVE_LIBGPIB | |
192 | m = g_slist_append(NULL, g_strdup("libgpib")); | |
193 | m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBGPIB_VERSION)); | |
194 | l = g_slist_append(l, m); | |
195 | #endif | |
196 | #ifdef HAVE_LIBREVISA | |
197 | m = g_slist_append(NULL, g_strdup("librevisa")); | |
198 | m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBREVISA_VERSION)); | |
199 | l = g_slist_append(l, m); | |
200 | #endif | |
201 | ||
202 | return l; | |
203 | } | |
204 | ||
205 | SR_API char *sr_buildinfo_host_get(void) | |
206 | { | |
207 | return g_strdup_printf("%s, %s-endian", CONF_HOST, | |
208 | #ifdef WORDS_BIGENDIAN | |
209 | "big" | |
210 | #else | |
211 | "little" | |
212 | #endif | |
213 | ); | |
214 | } | |
215 | ||
216 | SR_API char *sr_buildinfo_scpi_backends_get(void) | |
217 | { | |
218 | GString *s; | |
219 | char *str; | |
220 | ||
221 | s = g_string_sized_new(200); | |
222 | ||
223 | g_string_append_printf(s, "TCP, "); | |
224 | #if HAVE_RPC | |
225 | g_string_append_printf(s, "RPC, "); | |
226 | #endif | |
227 | #ifdef HAVE_SERIAL_COMM | |
228 | g_string_append_printf(s, "serial, "); | |
229 | #endif | |
230 | #ifdef HAVE_LIBREVISA | |
231 | g_string_append_printf(s, "VISA, "); | |
232 | #endif | |
233 | #ifdef HAVE_LIBGPIB | |
234 | g_string_append_printf(s, "GPIB, "); | |
235 | #endif | |
236 | #ifdef HAVE_LIBUSB_1_0 | |
237 | g_string_append_printf(s, "USBTMC, "); | |
238 | #endif | |
239 | s->str[s->len - 2] = '\0'; | |
240 | ||
241 | str = g_strdup(s->str); | |
242 | g_string_free(s, TRUE); | |
243 | ||
244 | return str; | |
245 | } | |
246 | ||
247 | static void print_versions(void) | |
248 | { | |
249 | GString *s; | |
250 | GSList *l, *l_orig, *m; | |
251 | char *str; | |
252 | const char *lib, *version; | |
253 | ||
254 | sr_dbg("libsigrok %s/%s.", | |
255 | sr_package_version_string_get(), sr_lib_version_string_get()); | |
256 | ||
257 | s = g_string_sized_new(200); | |
258 | g_string_append(s, "Libs: "); | |
259 | l_orig = sr_buildinfo_libs_get(); | |
260 | for (l = l_orig; l; l = l->next) { | |
261 | m = l->data; | |
262 | lib = m->data; | |
263 | version = m->next->data; | |
264 | g_string_append_printf(s, "%s %s, ", lib, version); | |
265 | g_slist_free_full(m, g_free); | |
266 | } | |
267 | g_slist_free(l_orig); | |
268 | s->str[s->len - 2] = '.'; | |
269 | s->str[s->len - 1] = '\0'; | |
270 | sr_dbg("%s", s->str); | |
271 | g_string_free(s, TRUE); | |
272 | ||
273 | str = sr_buildinfo_host_get(); | |
274 | sr_dbg("Host: %s.", str); | |
275 | g_free(str); | |
276 | ||
277 | str = sr_buildinfo_scpi_backends_get(); | |
278 | sr_dbg("SCPI backends: %s.", str); | |
279 | g_free(str); | |
280 | } | |
281 | ||
282 | static void print_resourcepaths(void) | |
283 | { | |
284 | GSList *l, *l_orig; | |
285 | ||
286 | sr_dbg("Firmware search paths:"); | |
287 | l_orig = sr_resourcepaths_get(SR_RESOURCE_FIRMWARE); | |
288 | for (l = l_orig; l; l = l->next) | |
289 | sr_dbg(" - %s", (const char *)l->data); | |
290 | g_slist_free_full(l_orig, g_free); | |
291 | } | |
292 | ||
293 | /** | |
294 | * Sanity-check all libsigrok drivers. | |
295 | * | |
296 | * @param[in] ctx Pointer to a libsigrok context struct. Must not be NULL. | |
297 | * | |
298 | * @retval SR_OK All drivers are OK | |
299 | * @retval SR_ERR One or more drivers have issues. | |
300 | * @retval SR_ERR_ARG Invalid argument. | |
301 | */ | |
302 | static int sanity_check_all_drivers(const struct sr_context *ctx) | |
303 | { | |
304 | int i, errors, ret = SR_OK; | |
305 | struct sr_dev_driver **drivers; | |
306 | const char *d; | |
307 | ||
308 | if (!ctx) | |
309 | return SR_ERR_ARG; | |
310 | ||
311 | sr_spew("Sanity-checking all drivers."); | |
312 | ||
313 | drivers = sr_driver_list(ctx); | |
314 | for (i = 0; drivers[i]; i++) { | |
315 | errors = 0; | |
316 | ||
317 | d = (drivers[i]->name) ? drivers[i]->name : "NULL"; | |
318 | ||
319 | if (!drivers[i]->name) { | |
320 | sr_err("No name in driver %d ('%s').", i, d); | |
321 | errors++; | |
322 | } | |
323 | if (!drivers[i]->longname) { | |
324 | sr_err("No longname in driver %d ('%s').", i, d); | |
325 | errors++; | |
326 | } | |
327 | if (drivers[i]->api_version < 1) { | |
328 | sr_err("API version in driver %d ('%s') < 1.", i, d); | |
329 | errors++; | |
330 | } | |
331 | if (!drivers[i]->init) { | |
332 | sr_err("No init in driver %d ('%s').", i, d); | |
333 | errors++; | |
334 | } | |
335 | if (!drivers[i]->cleanup) { | |
336 | sr_err("No cleanup in driver %d ('%s').", i, d); | |
337 | errors++; | |
338 | } | |
339 | if (!drivers[i]->scan) { | |
340 | sr_err("No scan in driver %d ('%s').", i, d); | |
341 | errors++; | |
342 | } | |
343 | if (!drivers[i]->dev_list) { | |
344 | sr_err("No dev_list in driver %d ('%s').", i, d); | |
345 | errors++; | |
346 | } | |
347 | if (!drivers[i]->dev_clear) { | |
348 | sr_err("No dev_clear in driver %d ('%s').", i, d); | |
349 | errors++; | |
350 | } | |
351 | /* Note: config_get() is optional. */ | |
352 | if (!drivers[i]->config_set) { | |
353 | sr_err("No config_set in driver %d ('%s').", i, d); | |
354 | errors++; | |
355 | } | |
356 | /* Note: config_channel_set() is optional. */ | |
357 | /* Note: config_commit() is optional. */ | |
358 | if (!drivers[i]->config_list) { | |
359 | sr_err("No config_list in driver %d ('%s').", i, d); | |
360 | errors++; | |
361 | } | |
362 | if (!drivers[i]->dev_open) { | |
363 | sr_err("No dev_open in driver %d ('%s').", i, d); | |
364 | errors++; | |
365 | } | |
366 | if (!drivers[i]->dev_close) { | |
367 | sr_err("No dev_close in driver %d ('%s').", i, d); | |
368 | errors++; | |
369 | } | |
370 | if (!drivers[i]->dev_acquisition_start) { | |
371 | sr_err("No dev_acquisition_start in driver %d ('%s').", | |
372 | i, d); | |
373 | errors++; | |
374 | } | |
375 | if (!drivers[i]->dev_acquisition_stop) { | |
376 | sr_err("No dev_acquisition_stop in driver %d ('%s').", | |
377 | i, d); | |
378 | errors++; | |
379 | } | |
380 | ||
381 | /* Note: 'priv' is allowed to be NULL. */ | |
382 | ||
383 | if (errors == 0) | |
384 | continue; | |
385 | ||
386 | ret = SR_ERR; | |
387 | } | |
388 | ||
389 | return ret; | |
390 | } | |
391 | ||
392 | /** | |
393 | * Sanity-check all libsigrok input modules. | |
394 | * | |
395 | * @retval SR_OK All modules are OK | |
396 | * @retval SR_ERR One or more modules have issues. | |
397 | */ | |
398 | static int sanity_check_all_input_modules(void) | |
399 | { | |
400 | int i, errors, ret = SR_OK; | |
401 | const struct sr_input_module **inputs; | |
402 | const char *d; | |
403 | ||
404 | sr_spew("Sanity-checking all input modules."); | |
405 | ||
406 | inputs = sr_input_list(); | |
407 | for (i = 0; inputs[i]; i++) { | |
408 | errors = 0; | |
409 | ||
410 | d = (inputs[i]->id) ? inputs[i]->id : "NULL"; | |
411 | ||
412 | if (!inputs[i]->id) { | |
413 | sr_err("No ID in module %d ('%s').", i, d); | |
414 | errors++; | |
415 | } | |
416 | if (!inputs[i]->name) { | |
417 | sr_err("No name in module %d ('%s').", i, d); | |
418 | errors++; | |
419 | } | |
420 | if (!inputs[i]->desc) { | |
421 | sr_err("No description in module %d ('%s').", i, d); | |
422 | errors++; | |
423 | } | |
424 | if (!inputs[i]->init) { | |
425 | sr_err("No init in module %d ('%s').", i, d); | |
426 | errors++; | |
427 | } | |
428 | if (!inputs[i]->receive) { | |
429 | sr_err("No receive in module %d ('%s').", i, d); | |
430 | errors++; | |
431 | } | |
432 | if (!inputs[i]->end) { | |
433 | sr_err("No end in module %d ('%s').", i, d); | |
434 | errors++; | |
435 | } | |
436 | ||
437 | if (errors == 0) | |
438 | continue; | |
439 | ||
440 | ret = SR_ERR; | |
441 | } | |
442 | ||
443 | return ret; | |
444 | } | |
445 | ||
446 | /** | |
447 | * Sanity-check all libsigrok output modules. | |
448 | * | |
449 | * @retval SR_OK All modules are OK | |
450 | * @retval SR_ERR One or more modules have issues. | |
451 | */ | |
452 | static int sanity_check_all_output_modules(void) | |
453 | { | |
454 | int i, errors, ret = SR_OK; | |
455 | const struct sr_output_module **outputs; | |
456 | const char *d; | |
457 | ||
458 | sr_spew("Sanity-checking all output modules."); | |
459 | ||
460 | outputs = sr_output_list(); | |
461 | for (i = 0; outputs[i]; i++) { | |
462 | errors = 0; | |
463 | ||
464 | d = (outputs[i]->id) ? outputs[i]->id : "NULL"; | |
465 | ||
466 | if (!outputs[i]->id) { | |
467 | sr_err("No ID in module %d ('%s').", i, d); | |
468 | errors++; | |
469 | } | |
470 | if (!outputs[i]->name) { | |
471 | sr_err("No name in module %d ('%s').", i, d); | |
472 | errors++; | |
473 | } | |
474 | if (!outputs[i]->desc) { | |
475 | sr_err("No description in module '%s'.", d); | |
476 | errors++; | |
477 | } | |
478 | if (!outputs[i]->receive) { | |
479 | sr_err("No receive in module '%s'.", d); | |
480 | errors++; | |
481 | } | |
482 | ||
483 | if (errors == 0) | |
484 | continue; | |
485 | ||
486 | ret = SR_ERR; | |
487 | } | |
488 | ||
489 | return ret; | |
490 | } | |
491 | ||
492 | /** | |
493 | * Sanity-check all libsigrok transform modules. | |
494 | * | |
495 | * @retval SR_OK All modules are OK | |
496 | * @retval SR_ERR One or more modules have issues. | |
497 | */ | |
498 | static int sanity_check_all_transform_modules(void) | |
499 | { | |
500 | int i, errors, ret = SR_OK; | |
501 | const struct sr_transform_module **transforms; | |
502 | const char *d; | |
503 | ||
504 | sr_spew("Sanity-checking all transform modules."); | |
505 | ||
506 | transforms = sr_transform_list(); | |
507 | for (i = 0; transforms[i]; i++) { | |
508 | errors = 0; | |
509 | ||
510 | d = (transforms[i]->id) ? transforms[i]->id : "NULL"; | |
511 | ||
512 | if (!transforms[i]->id) { | |
513 | sr_err("No ID in module %d ('%s').", i, d); | |
514 | errors++; | |
515 | } | |
516 | if (!transforms[i]->name) { | |
517 | sr_err("No name in module %d ('%s').", i, d); | |
518 | errors++; | |
519 | } | |
520 | if (!transforms[i]->desc) { | |
521 | sr_err("No description in module '%s'.", d); | |
522 | errors++; | |
523 | } | |
524 | /* Note: options() is optional. */ | |
525 | /* Note: init() is optional. */ | |
526 | if (!transforms[i]->receive) { | |
527 | sr_err("No receive in module '%s'.", d); | |
528 | errors++; | |
529 | } | |
530 | /* Note: cleanup() is optional. */ | |
531 | ||
532 | if (errors == 0) | |
533 | continue; | |
534 | ||
535 | ret = SR_ERR; | |
536 | } | |
537 | ||
538 | return ret; | |
539 | } | |
540 | ||
541 | /** | |
542 | * Initialize libsigrok. | |
543 | * | |
544 | * This function must be called before any other libsigrok function. | |
545 | * | |
546 | * @param ctx Pointer to a libsigrok context struct pointer. Must not be NULL. | |
547 | * This will be a pointer to a newly allocated libsigrok context | |
548 | * object upon success, and is undefined upon errors. | |
549 | * | |
550 | * @return SR_OK upon success, a (negative) error code otherwise. Upon errors | |
551 | * the 'ctx' pointer is undefined and should not be used. Upon success, | |
552 | * the context will be free'd by sr_exit() as part of the libsigrok | |
553 | * shutdown. | |
554 | * | |
555 | * @since 0.2.0 | |
556 | */ | |
557 | SR_API int sr_init(struct sr_context **ctx) | |
558 | { | |
559 | int ret = SR_ERR; | |
560 | struct sr_context *context; | |
561 | #ifdef _WIN32 | |
562 | WSADATA wsadata; | |
563 | #endif | |
564 | ||
565 | print_versions(); | |
566 | ||
567 | print_resourcepaths(); | |
568 | ||
569 | if (!ctx) { | |
570 | sr_err("%s(): libsigrok context was NULL.", __func__); | |
571 | return SR_ERR; | |
572 | } | |
573 | ||
574 | context = g_malloc0(sizeof(struct sr_context)); | |
575 | ||
576 | sr_drivers_init(context); | |
577 | ||
578 | if (sanity_check_all_drivers(context) < 0) { | |
579 | sr_err("Internal driver error(s), aborting."); | |
580 | goto done; | |
581 | } | |
582 | ||
583 | if (sanity_check_all_input_modules() < 0) { | |
584 | sr_err("Internal input module error(s), aborting."); | |
585 | goto done; | |
586 | } | |
587 | ||
588 | if (sanity_check_all_output_modules() < 0) { | |
589 | sr_err("Internal output module error(s), aborting."); | |
590 | goto done; | |
591 | } | |
592 | ||
593 | if (sanity_check_all_transform_modules() < 0) { | |
594 | sr_err("Internal transform module error(s), aborting."); | |
595 | goto done; | |
596 | } | |
597 | ||
598 | #ifdef _WIN32 | |
599 | if ((ret = WSAStartup(MAKEWORD(2, 2), &wsadata)) != 0) { | |
600 | sr_err("WSAStartup failed with error code %d.", ret); | |
601 | ret = SR_ERR; | |
602 | goto done; | |
603 | } | |
604 | #endif | |
605 | ||
606 | if ((ret = lzo_init()) != LZO_E_OK) { | |
607 | sr_err("lzo_init() failed with return code %d.", ret); | |
608 | sr_err("This usually indicates a compiler bug. Recompile without"); | |
609 | sr_err("optimizations, and enable '-DLZO_DEBUG' for diagnostics."); | |
610 | ret = SR_ERR; | |
611 | goto done; | |
612 | } | |
613 | ||
614 | #ifdef HAVE_LIBUSB_1_0 | |
615 | ret = libusb_init(&context->libusb_ctx); | |
616 | if (LIBUSB_SUCCESS != ret) { | |
617 | sr_err("libusb_init() returned %s.", libusb_error_name(ret)); | |
618 | ret = SR_ERR; | |
619 | goto done; | |
620 | } | |
621 | #endif | |
622 | #ifdef HAVE_LIBHIDAPI | |
623 | /* | |
624 | * According to <hidapi.h>, the hid_init() routine just returns | |
625 | * zero or non-zero, and hid_error() appears to relate to calls | |
626 | * for a specific device after hid_open(). Which means that there | |
627 | * is no more detailled information available beyond success/fail | |
628 | * at this point in time. | |
629 | */ | |
630 | if (hid_init() != 0) { | |
631 | sr_err("HIDAPI hid_init() failed."); | |
632 | ret = SR_ERR; | |
633 | goto done; | |
634 | } | |
635 | #endif | |
636 | sr_resource_set_hooks(context, NULL, NULL, NULL, NULL); | |
637 | ||
638 | *ctx = context; | |
639 | context = NULL; | |
640 | ret = SR_OK; | |
641 | ||
642 | done: | |
643 | g_free(context); | |
644 | return ret; | |
645 | } | |
646 | ||
647 | /** | |
648 | * Shutdown libsigrok. | |
649 | * | |
650 | * @param ctx Pointer to a libsigrok context struct. Must not be NULL. | |
651 | * | |
652 | * @retval SR_OK Success | |
653 | * @retval other Error code SR_ERR, ... | |
654 | * | |
655 | * @since 0.2.0 | |
656 | */ | |
657 | SR_API int sr_exit(struct sr_context *ctx) | |
658 | { | |
659 | if (!ctx) { | |
660 | sr_err("%s(): libsigrok context was NULL.", __func__); | |
661 | return SR_ERR; | |
662 | } | |
663 | ||
664 | sr_hw_cleanup_all(ctx); | |
665 | ||
666 | #ifdef _WIN32 | |
667 | WSACleanup(); | |
668 | #endif | |
669 | ||
670 | #ifdef HAVE_LIBHIDAPI | |
671 | hid_exit(); | |
672 | #endif | |
673 | #ifdef HAVE_LIBUSB_1_0 | |
674 | libusb_exit(ctx->libusb_ctx); | |
675 | #endif | |
676 | ||
677 | g_free(sr_driver_list(ctx)); | |
678 | g_free(ctx); | |
679 | ||
680 | return SR_OK; | |
681 | } | |
682 | ||
683 | /** @} */ |