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decode: add support for Google Trace Event output (JSON)
[sigrok-cli.git] / session.c
blobe8ec5a28ce3fc3bea3af7277dedc7727686bb006
1 /*
2 * This file is part of the sigrok-cli project.
3 *
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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 3 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 #include <config.h>
21 #include <glib.h>
22 #include <glib/gstdio.h>
23 #include <string.h>
24 #include <stdlib.h>
25 #include "sigrok-cli.h"
26
27 static uint64_t limit_samples = 0;
28 static uint64_t limit_frames = 0;
29
30 #ifdef HAVE_SRD
31 extern struct srd_session *srd_sess;
32 #endif
33
34 static int set_limit_time(const struct sr_dev_inst *sdi)
35 {
36 GVariant *gvar;
37 uint64_t time_msec;
38 uint64_t samplerate;
39 struct sr_dev_driver *driver;
40
41 driver = sr_dev_inst_driver_get(sdi);
42
43 if (!(time_msec = sr_parse_timestring(opt_time))) {
44 g_critical("Invalid time '%s'", opt_time);
45 return SR_ERR;
46 }
47
48 if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_LIMIT_MSEC)
49 & SR_CONF_SET) {
50 gvar = g_variant_new_uint64(time_msec);
51 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
52 g_critical("Failed to configure time limit.");
53 return SR_ERR;
54 }
55 } else if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_SAMPLERATE)
56 & (SR_CONF_GET | SR_CONF_SET)) {
57 /* Convert to samples based on the samplerate. */
58 sr_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
59 samplerate = g_variant_get_uint64(gvar);
60 g_variant_unref(gvar);
61 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
62 if (limit_samples == 0) {
63 g_critical("Not enough time at this samplerate.");
64 return SR_ERR;
65 }
66 gvar = g_variant_new_uint64(limit_samples);
67 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
68 g_critical("Failed to configure time-based sample limit.");
69 return SR_ERR;
70 }
71 } else {
72 g_critical("This device does not support time limits.");
73 return SR_ERR;
74 }
75
76 return SR_OK;
77 }
78
79 const struct sr_output *setup_output_format(const struct sr_dev_inst *sdi, FILE **outfile)
80 {
81 const struct sr_output_module *omod;
82 const struct sr_option **options;
83 const struct sr_output *o;
84 GHashTable *fmtargs, *fmtopts;
85 char *fmtspec;
86
87 if (!opt_output_format) {
88 if (opt_output_file) {
89 opt_output_format = DEFAULT_OUTPUT_FORMAT_FILE;
90 } else {
91 opt_output_format = DEFAULT_OUTPUT_FORMAT_NOFILE;
92 }
93 }
94
95 fmtargs = parse_generic_arg(opt_output_format, TRUE);
96 fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
97 if (!fmtspec)
98 g_critical("Invalid output format.");
99 if (!(omod = sr_output_find(fmtspec)))
100 g_critical("Unknown output module '%s'.", fmtspec);
101 g_hash_table_remove(fmtargs, "sigrok_key");
102 if ((options = sr_output_options_get(omod))) {
103 fmtopts = generic_arg_to_opt(options, fmtargs);
104 sr_output_options_free(options);
105 } else
106 fmtopts = NULL;
107 o = sr_output_new(omod, fmtopts, sdi, opt_output_file);
108
109 if (opt_output_file) {
110 if (!sr_output_test_flag(omod, SR_OUTPUT_INTERNAL_IO_HANDLING)) {
111 *outfile = g_fopen(opt_output_file, "wb");
112 if (!*outfile) {
113 g_critical("Cannot write to output file '%s'.",
114 opt_output_file);
115 }
116 } else {
117 *outfile = NULL;
118 }
119 } else {
120 setup_binary_stdout();
121 *outfile = stdout;
122 }
123
124 if (fmtopts)
125 g_hash_table_destroy(fmtopts);
126 g_hash_table_destroy(fmtargs);
127
128 return o;
129 }
130
131 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
132 {
133 const struct sr_transform_module *tmod;
134 const struct sr_option **options;
135 const struct sr_transform *t;
136 GHashTable *fmtargs, *fmtopts;
137 char *fmtspec;
138
139 fmtargs = parse_generic_arg(opt_transform_module, TRUE);
140 fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
141 if (!fmtspec)
142 g_critical("Invalid transform module.");
143 if (!(tmod = sr_transform_find(fmtspec)))
144 g_critical("Unknown transform module '%s'.", fmtspec);
145 g_hash_table_remove(fmtargs, "sigrok_key");
146 if ((options = sr_transform_options_get(tmod))) {
147 fmtopts = generic_arg_to_opt(options, fmtargs);
148 sr_transform_options_free(options);
149 } else
150 fmtopts = NULL;
151 t = sr_transform_new(tmod, fmtopts, sdi);
152 if (fmtopts)
153 g_hash_table_destroy(fmtopts);
154 g_hash_table_destroy(fmtargs);
155
156 return t;
157 }
158
159 /* Get the input stream's list of channels and their types, once. */
160 static void props_get_channels(struct df_arg_desc *args,
161 const struct sr_dev_inst *sdi)
162 {
163 struct input_stream_props *props;
164 GSList *l;
165 const struct sr_channel *ch;
166
167 if (!args)
168 return;
169 props = &args->props;
170 if (props->channels)
171 return;
172
173 props->channels = g_slist_copy(sr_dev_inst_channels_get(sdi));
174 if (!props->channels)
175 return;
176 for (l = props->channels; l; l = l->next) {
177 ch = l->data;
178 if (!ch->enabled)
179 continue;
180 if (ch->type != SR_CHANNEL_ANALOG)
181 continue;
182 props->first_analog_channel = ch;
183 break;
184 }
185 }
186
187 static gboolean props_chk_1st_channel(struct df_arg_desc *args,
188 const struct sr_datafeed_analog *analog)
189 {
190 struct sr_channel *ch;
191
192 if (!args || !analog || !analog->meaning)
193 return FALSE;
194 ch = g_slist_nth_data(analog->meaning->channels, 0);
195 if (!ch)
196 return FALSE;
197 return ch == args->props.first_analog_channel;
198 }
199
200 static void props_dump_details(struct df_arg_desc *args)
201 {
202 struct input_stream_props *props;
203 size_t ch_count;
204 GSList *l;
205 const struct sr_channel *ch;
206 const char *type;
207
208 if (!args)
209 return;
210 props = &args->props;
211 if (props->samplerate)
212 printf("Samplerate: %" PRIu64 "\n", props->samplerate);
213 if (props->channels) {
214 ch_count = g_slist_length(props->channels);
215 printf("Channels: %zu\n", ch_count);
216 for (l = props->channels; l; l = l->next) {
217 ch = l->data;
218 if (ch->type == SR_CHANNEL_ANALOG)
219 type = "analog";
220 else
221 type = "logic";
222 printf("- %s: %s\n", ch->name, type);
223 }
224 }
225 if (props->unitsize)
226 printf("Logic unitsize: %zu\n", props->unitsize);
227 if (props->sample_count_logic)
228 printf("Logic sample count: %" PRIu64 "\n", props->sample_count_logic);
229 if (props->sample_count_analog)
230 printf("Analog sample count: %" PRIu64 "\n", props->sample_count_analog);
231 if (props->frame_count)
232 printf("Frame count: %" PRIu64 "\n", props->frame_count);
233 if (props->triggered)
234 printf("Trigger count: %" PRIu64 "\n", props->triggered);
235 }
236
237 static void props_cleanup(struct df_arg_desc *args)
238 {
239 struct input_stream_props *props;
240
241 if (!args)
242 return;
243 props = &args->props;
244 g_slist_free(props->channels);
245 props->channels = NULL;
246 props->first_analog_channel = NULL;
247 }
248
249 void datafeed_in(const struct sr_dev_inst *sdi,
250 const struct sr_datafeed_packet *packet, void *cb_data)
251 {
252 static const struct sr_output *o = NULL;
253 static const struct sr_output *oa = NULL;
254 static uint64_t rcvd_samples_logic = 0;
255 static uint64_t rcvd_samples_analog = 0;
256 static uint64_t samplerate = 0;
257 static int triggered = 0;
258 static FILE *outfile = NULL;
259
260 const struct sr_datafeed_meta *meta;
261 const struct sr_datafeed_logic *logic;
262 const struct sr_datafeed_analog *analog;
263 struct df_arg_desc *df_arg;
264 int do_props;
265 struct input_stream_props *props;
266 struct sr_session *session;
267 struct sr_config *src;
268 GSList *l;
269 GString *out;
270 GVariant *gvar;
271 uint64_t end_sample;
272 uint64_t input_len;
273 struct sr_dev_driver *driver;
274
275 /* Avoid warnings when building without decoder support. */
276 (void)session;
277 (void)input_len;
278
279 driver = sr_dev_inst_driver_get(sdi);
280
281 /* Skip all packets before the first header. */
282 if (packet->type != SR_DF_HEADER && !o)
283 return;
284
285 /* Prepare to either process data, or "just" gather properties. */
286 df_arg = cb_data;
287 session = df_arg->session;
288 do_props = df_arg->do_props;
289 props = &df_arg->props;
290
291 switch (packet->type) {
292 case SR_DF_HEADER:
293 g_debug("cli: Received SR_DF_HEADER.");
294 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
295 &gvar) == SR_OK) {
296 samplerate = g_variant_get_uint64(gvar);
297 g_variant_unref(gvar);
298 }
299 if (do_props) {
300 /* Setup variables for maximum code path re-use. */
301 o = (void *)-1;
302 limit_samples = 0;
303 /* Start collecting input stream properties. */
304 memset(props, 0, sizeof(*props));
305 props->samplerate = samplerate;
306 props_get_channels(df_arg, sdi);
307 break;
308 }
309 if (!(o = setup_output_format(sdi, &outfile)))
310 g_critical("Failed to initialize output module.");
311
312 /* Set up backup analog output module. */
313 if (outfile)
314 oa = sr_output_new(sr_output_find("analog"), NULL,
315 sdi, NULL);
316
317 rcvd_samples_logic = rcvd_samples_analog = 0;
318
319 #ifdef HAVE_SRD
320 if (opt_pds) {
321 if (samplerate) {
322 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
323 g_variant_new_uint64(samplerate)) != SRD_OK) {
324 g_critical("Failed to configure decode session.");
325 break;
326 }
327 pd_samplerate = samplerate;
328 }
329 if (srd_session_start(srd_sess) != SRD_OK) {
330 g_critical("Failed to start decode session.");
331 break;
332 }
333 }
334 #endif
335 break;
336
337 case SR_DF_META:
338 g_debug("cli: Received SR_DF_META.");
339 meta = packet->payload;
340 for (l = meta->config; l; l = l->next) {
341 src = l->data;
342 switch (src->key) {
343 case SR_CONF_SAMPLERATE:
344 samplerate = g_variant_get_uint64(src->data);
345 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
346 if (do_props) {
347 props->samplerate = samplerate;
348 break;
349 }
350 #ifdef HAVE_SRD
351 if (opt_pds) {
352 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
353 g_variant_new_uint64(samplerate)) != SRD_OK) {
354 g_critical("Failed to pass samplerate to decoder.");
355 }
356 pd_samplerate = samplerate;
357 }
358 #endif
359 break;
360 case SR_CONF_SAMPLE_INTERVAL:
361 samplerate = g_variant_get_uint64(src->data);
362 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
363 if (do_props) {
364 props->samplerate = samplerate;
365 break;
366 }
367 break;
368 default:
369 /* Unknown metadata is not an error. */
370 break;
371 }
372 }
373 break;
374
375 case SR_DF_TRIGGER:
376 g_debug("cli: Received SR_DF_TRIGGER.");
377 if (do_props) {
378 props->triggered++;
379 break;
380 }
381 triggered = 1;
382 break;
383
384 case SR_DF_LOGIC:
385 logic = packet->payload;
386 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
387 logic->length, logic->unitsize);
388 if (logic->length == 0)
389 break;
390
391 if (do_props) {
392 props_get_channels(df_arg, sdi);
393 props->unitsize = logic->unitsize;
394 props->sample_count_logic += logic->length / logic->unitsize;
395 break;
396 }
397
398 /* Don't store any samples until triggered. */
399 if (opt_wait_trigger && !triggered)
400 break;
401
402 if (limit_samples && rcvd_samples_logic >= limit_samples)
403 break;
404
405 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
406 /* Cut off last packet according to the sample limit. */
407 if (limit_samples && end_sample > limit_samples)
408 end_sample = limit_samples;
409 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
410
411 if (opt_pds) {
412 #ifdef HAVE_SRD
413 if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
414 logic->data, input_len, logic->unitsize) != SRD_OK)
415 sr_session_stop(session);
416 #endif
417 }
418
419 rcvd_samples_logic = end_sample;
420 break;
421
422 case SR_DF_ANALOG:
423 analog = packet->payload;
424 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
425 if (analog->num_samples == 0)
426 break;
427
428 if (do_props) {
429 /* Only count the first analog channel. */
430 props_get_channels(df_arg, sdi);
431 if (!props_chk_1st_channel(df_arg, analog))
432 break;
433 props->sample_count_analog += analog->num_samples;
434 break;
435 }
436
437 if (limit_samples && rcvd_samples_analog >= limit_samples)
438 break;
439
440 rcvd_samples_analog += analog->num_samples;
441 break;
442
443 case SR_DF_FRAME_BEGIN:
444 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
445 break;
446
447 case SR_DF_FRAME_END:
448 g_debug("cli: Received SR_DF_FRAME_END.");
449 if (do_props) {
450 props->frame_count++;
451 break;
452 }
453 break;
454
455 default:
456 break;
457 }
458
459 if (!do_props && o && !opt_pds) {
460 if (sr_output_send(o, packet, &out) == SR_OK) {
461 if (oa && !out) {
462 /*
463 * The user didn't specify an output module,
464 * but needs to see this analog data.
465 */
466 sr_output_send(oa, packet, &out);
467 }
468 if (outfile && out && out->len > 0) {
469 fwrite(out->str, 1, out->len, outfile);
470 fflush(outfile);
471 }
472 if (out)
473 g_string_free(out, TRUE);
474 }
475 }
476
477 /*
478 * SR_DF_END needs to be handled after the output module's receive()
479 * is called, so it can properly clean up that module.
480 */
481 if (packet->type == SR_DF_END) {
482 g_debug("cli: Received SR_DF_END.");
483
484 if (do_props) {
485 props_dump_details(df_arg);
486 props_cleanup(df_arg);
487 o = NULL;
488 }
489
490 if (o)
491 sr_output_free(o);
492 o = NULL;
493
494 if (oa)
495 sr_output_free(oa);
496 oa = NULL;
497
498 if (outfile && outfile != stdout)
499 fclose(outfile);
500
501 if (limit_samples) {
502 if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
503 g_warning("Device only sent %" PRIu64 " samples.",
504 rcvd_samples_logic);
505 else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
506 g_warning("Device only sent %" PRIu64 " samples.",
507 rcvd_samples_analog);
508 }
509 }
510
511 }
512
513 int opt_to_gvar(char *key, char *value, struct sr_config *src)
514 {
515 const struct sr_key_info *srci, *srmqi;
516 double tmp_double, dlow, dhigh;
517 uint64_t tmp_u64, p, q, low, high, mqflags;
518 uint32_t mq;
519 GVariant *rational[2], *range[2], *gtup[2];
520 GVariantBuilder *vbl;
521 gboolean tmp_bool;
522 gchar **keyval;
523 int ret, i;
524
525 if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
526 g_critical("Unknown device option '%s'.", (char *) key);
527 return -1;
528 }
529 src->key = srci->key;
530
531 if ((!value || strlen(value) == 0) &&
532 (srci->datatype != SR_T_BOOL)) {
533 g_critical("Option '%s' needs a value.", (char *)key);
534 return -1;
535 }
536
537 ret = 0;
538 switch (srci->datatype) {
539 case SR_T_UINT64:
540 ret = sr_parse_sizestring(value, &tmp_u64);
541 if (ret != 0)
542 break;
543 src->data = g_variant_new_uint64(tmp_u64);
544 break;
545 case SR_T_INT32:
546 ret = sr_parse_sizestring(value, &tmp_u64);
547 if (ret != 0)
548 break;
549 src->data = g_variant_new_int32(tmp_u64);
550 break;
551 case SR_T_STRING:
552 src->data = g_variant_new_string(value);
553 break;
554 case SR_T_BOOL:
555 if (!value)
556 tmp_bool = TRUE;
557 else
558 tmp_bool = sr_parse_boolstring(value);
559 src->data = g_variant_new_boolean(tmp_bool);
560 break;
561 case SR_T_FLOAT:
562 tmp_double = strtof(value, NULL);
563 src->data = g_variant_new_double(tmp_double);
564 break;
565 case SR_T_RATIONAL_PERIOD:
566 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
567 break;
568 rational[0] = g_variant_new_uint64(p);
569 rational[1] = g_variant_new_uint64(q);
570 src->data = g_variant_new_tuple(rational, 2);
571 break;
572 case SR_T_RATIONAL_VOLT:
573 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
574 break;
575 rational[0] = g_variant_new_uint64(p);
576 rational[1] = g_variant_new_uint64(q);
577 src->data = g_variant_new_tuple(rational, 2);
578 break;
579 case SR_T_UINT64_RANGE:
580 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
581 ret = -1;
582 break;
583 } else {
584 range[0] = g_variant_new_uint64(low);
585 range[1] = g_variant_new_uint64(high);
586 src->data = g_variant_new_tuple(range, 2);
587 }
588 break;
589 case SR_T_DOUBLE_RANGE:
590 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
591 ret = -1;
592 break;
593 } else {
594 range[0] = g_variant_new_double(dlow);
595 range[1] = g_variant_new_double(dhigh);
596 src->data = g_variant_new_tuple(range, 2);
597 }
598 break;
599 case SR_T_KEYVALUE:
600 /* Expects the argument to be in the form of key=value. */
601 keyval = g_strsplit(value, "=", 2);
602 if (!keyval[0] || !keyval[1]) {
603 g_strfreev(keyval);
604 ret = -1;
605 break;
606 } else {
607 vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
608 g_variant_builder_add(vbl, "{ss}",
609 keyval[0], keyval[1]);
610 src->data = g_variant_builder_end(vbl);
611 g_strfreev(keyval);
612 }
613 break;
614 case SR_T_MQ:
615 /*
616 Argument is MQ id e.g. ("voltage") optionally followed by one
617 or more /<mqflag> e.g. "/ac".
618 */
619 keyval = g_strsplit(value, "/", 0);
620 if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
621 g_strfreev(keyval);
622 ret = -1;
623 break;
624 }
625 mq = srmqi->key;
626 mqflags = 0;
627 for (i = 1; keyval[i]; i++) {
628 if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
629 ret = -1;
630 break;
631 }
632 mqflags |= srmqi->key;
633 }
634 g_strfreev(keyval);
635 if (ret != -1) {
636 gtup[0] = g_variant_new_uint32(mq);
637 gtup[1] = g_variant_new_uint64(mqflags);
638 src->data = g_variant_new_tuple(gtup, 2);
639 }
640 break;
641 default:
642 g_critical("Unknown data type specified for option '%s' "
643 "(driver implementation bug?).", key);
644 ret = -1;
645 }
646
647 if (ret < 0)
648 g_critical("Invalid value: '%s' for option '%s'", value, key);
649
650 return ret;
651 }
652
653 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
654 {
655 struct sr_config src;
656 struct sr_channel_group *cg;
657 GHashTableIter iter;
658 gpointer key, value;
659 int ret;
660
661 g_hash_table_iter_init(&iter, args);
662 while (g_hash_table_iter_next(&iter, &key, &value)) {
663 if ((ret = opt_to_gvar(key, value, &src)) != 0)
664 return ret;
665 cg = select_channel_group(sdi);
666 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
667 src.key, src.data)) != SR_OK) {
668 g_critical("Failed to set device option '%s': %s.",
669 (char *)key, sr_strerror(ret));
670 return ret;
671 }
672 }
673
674 return SR_OK;
675 }
676
677 void run_session(void)
678 {
679 struct df_arg_desc df_arg;
680 GSList *devices, *real_devices, *sd;
681 GHashTable *devargs;
682 GVariant *gvar;
683 struct sr_session *session;
684 struct sr_trigger *trigger;
685 struct sr_dev_inst *sdi;
686 uint64_t min_samples, max_samples;
687 GArray *drv_opts;
688 guint i;
689 int is_demo_dev;
690 struct sr_dev_driver *driver;
691 const struct sr_transform *t;
692 GMainLoop *main_loop;
693
694 memset(&df_arg, 0, sizeof(df_arg));
695 df_arg.do_props = FALSE;
696
697 devices = device_scan();
698 if (!devices) {
699 g_critical("No devices found.");
700 return;
701 }
702
703 real_devices = NULL;
704 for (sd = devices; sd; sd = sd->next) {
705 sdi = sd->data;
706
707 driver = sr_dev_inst_driver_get(sdi);
708
709 if (!(drv_opts = sr_dev_options(driver, NULL, NULL))) {
710 g_critical("Failed to query list of driver options.");
711 return;
712 }
713
714 is_demo_dev = 0;
715 for (i = 0; i < drv_opts->len; i++) {
716 if (g_array_index(drv_opts, uint32_t, i) == SR_CONF_DEMO_DEV)
717 is_demo_dev = 1;
718 }
719
720 g_array_free(drv_opts, TRUE);
721
722 if (!is_demo_dev)
723 real_devices = g_slist_append(real_devices, sdi);
724 }
725
726 if (g_slist_length(devices) > 1) {
727 if (g_slist_length(real_devices) != 1) {
728 g_critical("sigrok-cli only supports one device for capturing.");
729 return;
730 } else {
731 /* We only have one non-demo device. */
732 g_slist_free(devices);
733 devices = real_devices;
734 real_devices = NULL;
735 }
736 }
737
738 /* This is unlikely to happen but it makes static analyzers stop complaining. */
739 if (!devices) {
740 g_critical("No real devices found.");
741 return;
742 }
743
744 sdi = devices->data;
745 g_slist_free(devices);
746 g_slist_free(real_devices);
747
748 sr_session_new(sr_ctx, &session);
749 df_arg.session = session;
750 sr_session_datafeed_callback_add(session, datafeed_in, &df_arg);
751 df_arg.session = NULL;
752
753 if (sr_dev_open(sdi) != SR_OK) {
754 g_critical("Failed to open device.");
755 return;
756 }
757
758 if (sr_session_dev_add(session, sdi) != SR_OK) {
759 g_critical("Failed to add device to session.");
760 sr_session_destroy(session);
761 return;
762 }
763
764 if (opt_config) {
765 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
766 if (set_dev_options(sdi, devargs) != SR_OK)
767 return;
768 g_hash_table_destroy(devargs);
769 }
770 }
771
772 if (select_channels(sdi) != SR_OK) {
773 g_critical("Failed to set channels.");
774 sr_session_destroy(session);
775 return;
776 }
777
778 trigger = NULL;
779 if (opt_triggers) {
780 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
781 sr_session_destroy(session);
782 return;
783 }
784 if (sr_session_trigger_set(session, trigger) != SR_OK) {
785 sr_session_destroy(session);
786 return;
787 }
788 }
789
790 if (opt_continuous) {
791 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
792 g_critical("This device does not support continuous sampling.");
793 sr_session_destroy(session);
794 return;
795 }
796 }
797
798 if (opt_time) {
799 if (set_limit_time(sdi) != SR_OK) {
800 sr_session_destroy(session);
801 return;
802 }
803 }
804
805 if (opt_samples) {
806 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
807 g_critical("Invalid sample limit '%s'.", opt_samples);
808 sr_session_destroy(session);
809 return;
810 }
811 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
812 &gvar) == SR_OK) {
813 /*
814 * The device has no compression, or compression is turned
815 * off, and publishes its sample memory size.
816 */
817 g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
818 g_variant_unref(gvar);
819 if (limit_samples < min_samples) {
820 g_critical("The device stores at least %"PRIu64
821 " samples with the current settings.", min_samples);
822 }
823 if (limit_samples > max_samples) {
824 g_critical("The device can store only %"PRIu64
825 " samples with the current settings.", max_samples);
826 }
827 }
828 gvar = g_variant_new_uint64(limit_samples);
829 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
830 g_critical("Failed to configure sample limit.");
831 sr_session_destroy(session);
832 return;
833 }
834 }
835
836 if (opt_frames) {
837 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
838 g_critical("Invalid frame limit '%s'.", opt_frames);
839 sr_session_destroy(session);
840 return;
841 }
842 gvar = g_variant_new_uint64(limit_frames);
843 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
844 g_critical("Failed to configure frame limit.");
845 sr_session_destroy(session);
846 return;
847 }
848 }
849
850 if (opt_transform_module) {
851 if (!(t = setup_transform_module(sdi)))
852 g_critical("Failed to initialize transform module.");
853 }
854
855 main_loop = g_main_loop_new(NULL, FALSE);
856
857 sr_session_stopped_callback_set(session,
858 (sr_session_stopped_callback)g_main_loop_quit, main_loop);
859
860 if (sr_session_start(session) != SR_OK) {
861 g_critical("Failed to start session.");
862 g_main_loop_unref(main_loop);
863 sr_session_destroy(session);
864 return;
865 }
866
867 if (opt_continuous)
868 add_anykey(session);
869
870 g_main_loop_run(main_loop);
871
872 if (opt_continuous)
873 clear_anykey();
874
875 if (trigger)
876 sr_trigger_free(trigger);
877
878 sr_session_datafeed_callback_remove_all(session);
879 g_main_loop_unref(main_loop);
880 sr_session_destroy(session);
881 }
command-line frontend for sigrok