1b967814508ed76d906a9474faecd75e84df9ae1
[sigrok-cli.git] / sigrok-cli.c
1 /*
2  * This file is part of the sigrok project.
3  *
4  * Copyright (C) 2012 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 <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <unistd.h>
24 #include <string.h>
25 #include <time.h>
26 #include <sys/time.h>
27 #include <inttypes.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #include <errno.h>
31 #include <glib.h>
32 #include <glib/gstdio.h>
33 #include <libsigrok/libsigrok.h>
34 #include "sigrok-cli.h"
35 #include "config.h"
36
37 #define DEFAULT_OUTPUT_FORMAT "bits:width=64"
38
39 static uint64_t limit_samples = 0;
40 static uint64_t limit_frames = 0;
41 static struct sr_output_format *output_format = NULL;
42 static int default_output_format = FALSE;
43 static char *output_format_param = NULL;
44 static GHashTable *pd_ann_visible = NULL;
45 static struct sr_datastore *singleds = NULL;
46
47 static gboolean opt_version = FALSE;
48 static gint opt_loglevel = SR_LOG_WARN; /* Show errors+warnings per default. */
49 static gboolean opt_list_devs = FALSE;
50 static gboolean opt_wait_trigger = FALSE;
51 static gchar *opt_input_file = NULL;
52 static gchar *opt_output_file = NULL;
53 static gchar *opt_drv = NULL;
54 static gchar *opt_dev = NULL;
55 static gchar *opt_probes = NULL;
56 static gchar *opt_triggers = NULL;
57 static gchar *opt_pds = NULL;
58 static gchar *opt_pd_stack = NULL;
59 static gchar *opt_pd_annotations = NULL;
60 static gchar *opt_input_format = NULL;
61 static gchar *opt_output_format = NULL;
62 static gchar *opt_show = NULL;
63 static gchar *opt_time = NULL;
64 static gchar *opt_samples = NULL;
65 static gchar *opt_frames = NULL;
66 static gchar *opt_continuous = NULL;
67
68 static GOptionEntry optargs[] = {
69         {"version", 'V', 0, G_OPTION_ARG_NONE, &opt_version,
70                         "Show version and support list", NULL},
71         {"loglevel", 'l', 0, G_OPTION_ARG_INT, &opt_loglevel,
72                         "Set libsigrok/libsigrokdecode loglevel", NULL},
73         {"list-devices", 'D', 0, G_OPTION_ARG_NONE, &opt_list_devs,
74                         "Scan for devices", NULL},
75         {"driver", 0, 0, G_OPTION_ARG_STRING, &opt_drv,
76                         "Use only this driver", NULL},
77         {"device", 'd', 0, G_OPTION_ARG_STRING, &opt_dev,
78                         "Use specified device", NULL},
79         {"input-file", 'i', 0, G_OPTION_ARG_FILENAME, &opt_input_file,
80                         "Load input from file", NULL},
81         {"input-format", 'I', 0, G_OPTION_ARG_STRING, &opt_input_format,
82                         "Input format", NULL},
83         {"output-file", 'o', 0, G_OPTION_ARG_FILENAME, &opt_output_file,
84                         "Save output to file", NULL},
85         {"output-format", 'O', 0, G_OPTION_ARG_STRING, &opt_output_format,
86                         "Output format", NULL},
87         {"probes", 'p', 0, G_OPTION_ARG_STRING, &opt_probes,
88                         "Probes to use", NULL},
89         {"triggers", 't', 0, G_OPTION_ARG_STRING, &opt_triggers,
90                         "Trigger configuration", NULL},
91         {"wait-trigger", 'w', 0, G_OPTION_ARG_NONE, &opt_wait_trigger,
92                         "Wait for trigger", NULL},
93         {"protocol-decoders", 'a', 0, G_OPTION_ARG_STRING, &opt_pds,
94                         "Protocol decoders to run", NULL},
95         {"protocol-decoder-stack", 's', 0, G_OPTION_ARG_STRING, &opt_pd_stack,
96                         "Protocol decoder stack", NULL},
97         {"protocol-decoder-annotations", 'A', 0, G_OPTION_ARG_STRING, &opt_pd_annotations,
98                         "Protocol decoder annotation(s) to show", NULL},
99         {"show", 0, 0, G_OPTION_ARG_NONE, &opt_show,
100                         "Show device detail", NULL},
101         {"time", 0, 0, G_OPTION_ARG_STRING, &opt_time,
102                         "How long to sample (ms)", NULL},
103         {"samples", 0, 0, G_OPTION_ARG_STRING, &opt_samples,
104                         "Number of samples to acquire", NULL},
105         {"frames", 0, 0, G_OPTION_ARG_STRING, &opt_frames,
106                         "Number of frames to acquire", NULL},
107         {"continuous", 0, 0, G_OPTION_ARG_NONE, &opt_continuous,
108                         "Sample continuously", NULL},
109         {NULL, 0, 0, 0, NULL, NULL, NULL}
110 };
111
112
113 /* Convert driver options hash to GSList of struct sr_hwopt. */
114 static GSList *hash_to_hwopt(GHashTable *hash)
115 {
116         const struct sr_hwcap_option *hwo;
117         struct sr_hwopt *hwopt;
118         GList *gl, *keys;
119         GSList *opts;
120         char *key, *value;
121
122         keys = g_hash_table_get_keys(hash);
123         opts = NULL;
124         for (gl = keys; gl; gl = gl->next) {
125                 key = gl->data;
126                 if (!(hwo = sr_drvopt_name_get(key))) {
127                         g_critical("Unknown option %s", key);
128                         return NULL;
129                 }
130                 hwopt = g_try_malloc(sizeof(struct sr_hwopt));
131                 hwopt->hwopt = hwo->hwcap;
132                 value = g_hash_table_lookup(hash, key);
133                 hwopt->value = g_strdup(value);
134                 opts = g_slist_append(opts, hwopt);
135         }
136         g_list_free(keys);
137
138         return opts;
139 }
140
141 static GSList *device_scan(void)
142 {
143         struct sr_dev_driver **drivers, *driver;
144         GHashTable *drvargs;
145         GSList *drvopts, *devices, *tmpdevs, *l;
146         int i;
147         char *drvname;
148
149         if (opt_drv) {
150                 drvargs = parse_generic_arg(opt_drv, TRUE);
151                 drvname = g_strdup(g_hash_table_lookup(drvargs, "sigrok_key"));
152                 g_hash_table_remove(drvargs, "sigrok_key");
153                 driver = NULL;
154                 drivers = sr_driver_list();
155                 for (i = 0; drivers[i]; i++) {
156                         if (strcmp(drivers[i]->name, drvname))
157                                 continue;
158                         driver = drivers[i];
159                 }
160                 if (!driver) {
161                         g_critical("Driver %s not found.", drvname);
162                         return NULL;
163                 }
164                 g_free(drvname);
165                 if (sr_driver_init(driver) != SR_OK) {
166                         g_critical("Failed to initialize driver.");
167                         return NULL;
168                 }
169                 drvopts = NULL;
170                 if (g_hash_table_size(drvargs) > 0)
171                         if (!(drvopts = hash_to_hwopt(drvargs)))
172                                 /* Unknown options, already logged. */
173                                 return NULL;
174                 devices = sr_driver_scan(driver, drvopts);
175         } else {
176                 /* No driver specified, let them all scan on their own. */
177                 devices = NULL;
178                 drivers = sr_driver_list();
179                 for (i = 0; drivers[i]; i++) {
180                         driver = drivers[i];
181                         if (sr_driver_init(driver) != SR_OK) {
182                                 g_critical("Failed to initialize driver.");
183                                 return NULL;
184                         }
185                         tmpdevs = sr_driver_scan(driver, NULL);
186                         for (l = tmpdevs; l; l = l->next)
187                                 devices = g_slist_append(devices, l->data);
188                         g_slist_free(tmpdevs);
189                 }
190         }
191
192         return devices;
193 }
194
195 static void show_version(void)
196 {
197         GSList *l;
198         struct sr_dev_driver **drivers;
199         struct sr_input_format **inputs;
200         struct sr_output_format **outputs;
201         struct srd_decoder *dec;
202         int i;
203
204         printf("sigrok-cli %s\n\n", VERSION);
205
206         printf("Using libsigrok %s (lib version %s).\n",
207                sr_package_version_string_get(), sr_lib_version_string_get());
208         printf("Using libsigrokdecode %s (lib version %s).\n\n",
209                srd_package_version_string_get(), srd_lib_version_string_get());
210
211         printf("Supported hardware drivers:\n");
212         drivers = sr_driver_list();
213         for (i = 0; drivers[i]; i++) {
214                 printf("  %-20s %s\n", drivers[i]->name, drivers[i]->longname);
215         }
216         printf("\n");
217
218         printf("Supported input formats:\n");
219         inputs = sr_input_list();
220         for (i = 0; inputs[i]; i++)
221                 printf("  %-20s %s\n", inputs[i]->id, inputs[i]->description);
222         printf("\n");
223
224         printf("Supported output formats:\n");
225         outputs = sr_output_list();
226         for (i = 0; outputs[i]; i++)
227                 printf("  %-20s %s\n", outputs[i]->id, outputs[i]->description);
228         printf("\n");
229
230         if (srd_init(NULL) == SRD_OK) {
231                 printf("Supported protocol decoders:\n");
232                 srd_decoder_load_all();
233                 for (l = srd_decoder_list(); l; l = l->next) {
234                         dec = l->data;
235                         printf("  %-20s %s\n", dec->id, dec->longname);
236                         /* Print protocol description upon "-l 3" or higher. */
237                         if (opt_loglevel >= SR_LOG_INFO)
238                                 printf("  %-20s %s\n", "", dec->desc);
239                 }
240                 srd_exit();
241         }
242         printf("\n");
243 }
244
245 static void print_dev_line(const struct sr_dev_inst *sdi)
246 {
247
248         if (sdi->vendor && sdi->vendor[0])
249                 printf("%s ", sdi->vendor);
250         if (sdi->model && sdi->model[0])
251                 printf("%s ", sdi->model);
252         if (sdi->version && sdi->version[0])
253                 printf("%s ", sdi->version);
254         if (sdi->probes)
255                 printf("with %d probes", g_slist_length(sdi->probes));
256         printf("\n");
257 }
258
259 static void show_dev_list(void)
260 {
261         struct sr_dev_inst *sdi;
262         GSList *devices, *l;
263
264         if (!(devices = device_scan()))
265                 return;
266
267         printf("The following devices were found:\n");
268         for (l = devices; l; l = l->next) {
269                 sdi = l->data;
270                 print_dev_line(sdi);
271         }
272         g_slist_free(devices);
273
274 }
275
276 static void show_dev_detail(void)
277 {
278         struct sr_dev_inst *sdi;
279         const struct sr_hwcap_option *hwo;
280         const struct sr_samplerates *samplerates;
281         struct sr_rational *rationals;
282         GSList *devices;
283         uint64_t *integers;
284         const int *hwopts, *hwcaps;
285         int cap, num_devices, n, i;
286         char *s, *title;
287         const char *charopts, **stropts;
288
289         if (!(devices = device_scan())) {
290                 g_critical("No devices found.");
291                 return;
292         }
293
294         num_devices = g_slist_length(devices);
295         if (num_devices > 1) {
296                 if (!opt_dev) {
297                         g_critical("%d devices found. Use --list-devices to show them, "
298                                         "and --device to select one.", num_devices);
299                         return;
300                 }
301                 /* opt_dev is NULL if not specified, which is fine. */
302                 n = strtol(opt_dev, NULL, 10);
303                 if (n >= num_devices) {
304                         g_critical("%d devices found, numbered starting from 0.",
305                                         num_devices);
306                         return;
307                 }
308                 sdi = g_slist_nth_data(devices, n);
309         } else
310                 sdi = g_slist_nth_data(devices, 0);
311
312         print_dev_line(sdi);
313
314         if (sr_info_get(sdi->driver, SR_DI_TRIGGER_TYPES, (const void **)&charopts,
315                         sdi) == SR_OK && charopts) {
316                 printf("Supported triggers: ");
317                 while (*charopts) {
318                         printf("%c ", *charopts);
319                         charopts++;
320                 }
321                 printf("\n");
322         }
323
324         if ((sr_info_get(sdi->driver, SR_DI_HWOPTS, (const void **)&hwopts,
325                         NULL) == SR_OK) && hwopts) {
326                 printf("Supported driver options:\n");
327                 for (i = 0; hwopts[i]; i++) {
328                         if (!(hwo = sr_drvopt_get(hwopts[i])))
329                                 continue;
330                         printf("    %s\n", hwo->shortname);
331                 }
332         }
333
334         title = "Supported device options:\n";
335         if ((sr_info_get(sdi->driver, SR_DI_HWCAPS, (const void **)&hwcaps,
336                         NULL) != SR_OK) || !hwcaps)
337                 /* Driver supports no device instance options. */
338                 return;
339
340         for (cap = 0; hwcaps[cap]; cap++) {
341                 if (!(hwo = sr_devopt_get(hwcaps[cap])))
342                         continue;
343
344                 if (title) {
345                         printf("%s", title);
346                         title = NULL;
347                 }
348
349                 if (hwo->hwcap == SR_HWCAP_PATTERN_MODE) {
350                         /* Pattern generator modes */
351                         printf("    %s", hwo->shortname);
352                         if (sr_info_get(sdi->driver, SR_DI_PATTERNS,
353                                         (const void **)&stropts, sdi) == SR_OK) {
354                                 printf(" - supported patterns:\n");
355                                 for (i = 0; stropts[i]; i++)
356                                         printf("      %s\n", stropts[i]);
357                         } else {
358                                 printf("\n");
359                         }
360
361                 } else if (hwo->hwcap == SR_HWCAP_SAMPLERATE) {
362                         /* Supported samplerates */
363                         printf("    %s", hwo->shortname);
364                         if (sr_info_get(sdi->driver, SR_DI_SAMPLERATES,
365                                         (const void **)&samplerates, sdi) != SR_OK) {
366                                 printf("\n");
367                                 continue;
368                         }
369                         if (samplerates->step) {
370                                 /* low */
371                                 if (!(s = sr_samplerate_string(samplerates->low)))
372                                         continue;
373                                 printf(" (%s", s);
374                                 g_free(s);
375                                 /* high */
376                                 if (!(s = sr_samplerate_string(samplerates->high)))
377                                         continue;
378                                 printf(" - %s", s);
379                                 g_free(s);
380                                 /* step */
381                                 if (!(s = sr_samplerate_string(samplerates->step)))
382                                         continue;
383                                 printf(" in steps of %s)\n", s);
384                                 g_free(s);
385                         } else {
386                                 printf(" - supported samplerates:\n");
387                                 for (i = 0; samplerates->list[i]; i++)
388                                         printf("      %s\n", sr_samplerate_string(samplerates->list[i]));
389                         }
390
391                 } else if (hwo->hwcap == SR_HWCAP_BUFFERSIZE) {
392                         /* Supported buffer sizes */
393                         printf("    %s", hwo->shortname);
394                         if (sr_info_get(sdi->driver, SR_DI_BUFFERSIZES,
395                                         (const void **)&integers, sdi) != SR_OK) {
396                                 printf("\n");
397                                 continue;
398                         }
399                         printf(" - supported buffer sizes:\n");
400                         for (i = 0; integers[i]; i++)
401                                 printf("      %"PRIu64"\n", integers[i]);
402
403                 } else if (hwo->hwcap == SR_HWCAP_TIMEBASE) {
404                         /* Supported time bases */
405                         printf("    %s", hwo->shortname);
406                         if (sr_info_get(sdi->driver, SR_DI_TIMEBASES,
407                                         (const void **)&rationals, sdi) != SR_OK) {
408                                 printf("\n");
409                                 continue;
410                         }
411                         printf(" - supported time bases:\n");
412                         for (i = 0; rationals[i].p && rationals[i].q; i++)
413                                 printf("      %s\n", sr_period_string(
414                                                 rationals[i].p * rationals[i].q));
415
416                 } else if (hwo->hwcap == SR_HWCAP_TRIGGER_SOURCE) {
417                         /* Supported trigger sources */
418                         printf("    %s", hwo->shortname);
419                         if (sr_info_get(sdi->driver, SR_DI_TRIGGER_SOURCES,
420                                         (const void **)&stropts, sdi) != SR_OK) {
421                                 printf("\n");
422                                 continue;
423                         }
424                         printf(" - supported trigger sources:\n");
425                         for (i = 0; stropts[i]; i++)
426                                 printf("      %s\n", stropts[i]);
427
428                 } else if (hwo->hwcap == SR_HWCAP_FILTER) {
429                         /* Supported trigger sources */
430                         printf("    %s", hwo->shortname);
431                         if (sr_info_get(sdi->driver, SR_DI_FILTERS,
432                                         (const void **)&stropts, sdi) != SR_OK) {
433                                 printf("\n");
434                                 continue;
435                         }
436                         printf(" - supported filter targets:\n");
437                         for (i = 0; stropts[i]; i++)
438                                 printf("      %s\n", stropts[i]);
439
440                 } else if (hwo->hwcap == SR_HWCAP_VDIV) {
441                         /* Supported volts/div values */
442                         printf("    %s", hwo->shortname);
443                         if (sr_info_get(sdi->driver, SR_DI_VDIVS,
444                                         (const void **)&rationals, sdi) != SR_OK) {
445                                 printf("\n");
446                                 continue;
447                         }
448                         printf(" - supported volts/div:\n");
449                         for (i = 0; rationals[i].p && rationals[i].q; i++)
450                                 printf("      %s\n", sr_voltage_string( &rationals[i]));
451
452                 } else if (hwo->hwcap == SR_HWCAP_COUPLING) {
453                         /* Supported coupling settings */
454                         printf("    %s", hwo->shortname);
455                         if (sr_info_get(sdi->driver, SR_DI_COUPLING,
456                                         (const void **)&stropts, sdi) != SR_OK) {
457                                 printf("\n");
458                                 continue;
459                         }
460                         printf(" - supported coupling options:\n");
461                         for (i = 0; stropts[i]; i++)
462                                 printf("      %s\n", stropts[i]);
463
464                 } else {
465                         /* Everything else */
466                         printf("    %s\n", hwo->shortname);
467                 }
468         }
469
470 }
471
472 static void show_pd_detail(void)
473 {
474         GSList *l;
475         struct srd_decoder *dec;
476         char **pdtokens, **pdtok, **ann, *doc;
477         struct srd_probe *p;
478
479         pdtokens = g_strsplit(opt_pds, ",", -1);
480         for (pdtok = pdtokens; *pdtok; pdtok++) {
481                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
482                         g_critical("Protocol decoder %s not found.", *pdtok);
483                         return;
484                 }
485                 printf("ID: %s\nName: %s\nLong name: %s\nDescription: %s\n",
486                                 dec->id, dec->name, dec->longname, dec->desc);
487                 printf("License: %s\n", dec->license);
488                 printf("Annotations:\n");
489                 if (dec->annotations) {
490                         for (l = dec->annotations; l; l = l->next) {
491                                 ann = l->data;
492                                 printf("- %s\n  %s\n", ann[0], ann[1]);
493                         }
494                 } else {
495                         printf("None.\n");
496                 }
497                 /* TODO: Print supported decoder options. */
498                 printf("Required probes:\n");
499                 if (dec->probes) {
500                         for (l = dec->probes; l; l = l->next) {
501                                 p = l->data;
502                                 printf("- %s (%s): %s\n",
503                                        p->name, p->id, p->desc);
504                         }
505                 } else {
506                         printf("None.\n");
507                 }
508                 printf("Optional probes:\n");
509                 if (dec->opt_probes) {
510                         for (l = dec->opt_probes; l; l = l->next) {
511                                 p = l->data;
512                                 printf("- %s (%s): %s\n",
513                                        p->name, p->id, p->desc);
514                         }
515                 } else {
516                         printf("None.\n");
517                 }
518                 if ((doc = srd_decoder_doc_get(dec))) {
519                         printf("Documentation:\n%s\n",
520                                doc[0] == '\n' ? doc + 1 : doc);
521                         g_free(doc);
522                 }
523         }
524
525         g_strfreev(pdtokens);
526 }
527
528 static void datafeed_in(const struct sr_dev_inst *sdi,
529                 struct sr_datafeed_packet *packet)
530 {
531         static struct sr_output *o = NULL;
532         static int logic_probelist[SR_MAX_NUM_PROBES] = { -1 };
533         static struct sr_probe *analog_probelist[SR_MAX_NUM_PROBES];
534         static uint64_t received_samples = 0;
535         static int unitsize = 0;
536         static int triggered = 0;
537         static FILE *outfile = NULL;
538         static int num_analog_probes = 0;
539         struct sr_probe *probe;
540         struct sr_datafeed_logic *logic;
541         struct sr_datafeed_meta_logic *meta_logic;
542         struct sr_datafeed_analog *analog;
543         struct sr_datafeed_meta_analog *meta_analog;
544         static int num_enabled_analog_probes = 0;
545         int num_enabled_probes, sample_size, ret, i;
546         uint64_t output_len, filter_out_len;
547         uint8_t *output_buf, *filter_out;
548
549         /* If the first packet to come in isn't a header, don't even try. */
550         if (packet->type != SR_DF_HEADER && o == NULL)
551                 return;
552
553         sample_size = -1;
554         switch (packet->type) {
555         case SR_DF_HEADER:
556                 g_debug("cli: Received SR_DF_HEADER");
557                 /* Initialize the output module. */
558                 if (!(o = g_try_malloc(sizeof(struct sr_output)))) {
559                         g_critical("Output module malloc failed.");
560                         exit(1);
561                 }
562                 o->format = output_format;
563                 o->sdi = (struct sr_dev_inst *)sdi;
564                 o->param = output_format_param;
565                 if (o->format->init) {
566                         if (o->format->init(o) != SR_OK) {
567                                 g_critical("Output format initialization failed.");
568                                 exit(1);
569                         }
570                 }
571                 break;
572
573         case SR_DF_END:
574                 g_debug("cli: Received SR_DF_END");
575                 if (!o) {
576                         g_debug("cli: double end!");
577                         break;
578                 }
579                 if (o->format->event) {
580                         o->format->event(o, SR_DF_END, &output_buf, &output_len);
581                         if (output_buf) {
582                                 if (outfile)
583                                         fwrite(output_buf, 1, output_len, outfile);
584                                 g_free(output_buf);
585                                 output_len = 0;
586                         }
587                 }
588                 if (limit_samples && received_samples < limit_samples)
589                         g_warning("Device only sent %" PRIu64 " samples.",
590                                received_samples);
591                 if (opt_continuous)
592                         g_warning("Device stopped after %" PRIu64 " samples.",
593                                received_samples);
594                 if (outfile && outfile != stdout)
595                         fclose(outfile);
596                 g_free(o);
597                 o = NULL;
598                 break;
599
600         case SR_DF_TRIGGER:
601                 g_debug("cli: received SR_DF_TRIGGER");
602                 if (o->format->event)
603                         o->format->event(o, SR_DF_TRIGGER, &output_buf,
604                                          &output_len);
605                 triggered = 1;
606                 break;
607
608         case SR_DF_META_LOGIC:
609                 g_message("cli: Received SR_DF_META_LOGIC");
610                 meta_logic = packet->payload;
611                 num_enabled_probes = 0;
612                 for (i = 0; i < meta_logic->num_probes; i++) {
613                         probe = g_slist_nth_data(sdi->probes, i);
614                         if (probe->enabled)
615                                 logic_probelist[num_enabled_probes++] = probe->index;
616                 }
617                 logic_probelist[num_enabled_probes] = -1;
618                 /* How many bytes we need to store num_enabled_probes bits */
619                 unitsize = (num_enabled_probes + 7) / 8;
620
621                 outfile = stdout;
622                 if (opt_output_file) {
623                         if (default_output_format) {
624                                 /* output file is in session format, which means we'll
625                                  * dump everything in the datastore as it comes in,
626                                  * and save from there after the session. */
627                                 outfile = NULL;
628                                 ret = sr_datastore_new(unitsize, &singleds);
629                                 if (ret != SR_OK) {
630                                         g_critical("Failed to create datastore.");
631                                         exit(1);
632                                 }
633                         } else {
634                                 /* saving to a file in whatever format was set
635                                  * with --format, so all we need is a filehandle */
636                                 outfile = g_fopen(opt_output_file, "wb");
637                         }
638                 }
639                 if (opt_pds)
640                         srd_session_start(num_enabled_probes, unitsize,
641                                         meta_logic->samplerate);
642                 break;
643
644         case SR_DF_LOGIC:
645                 logic = packet->payload;
646                 g_message("cli: received SR_DF_LOGIC, %"PRIu64" bytes", logic->length);
647                 sample_size = logic->unitsize;
648                 if (logic->length == 0)
649                         break;
650
651                 /* Don't store any samples until triggered. */
652                 if (opt_wait_trigger && !triggered)
653                         break;
654
655                 if (limit_samples && received_samples >= limit_samples)
656                         break;
657
658                 ret = sr_filter_probes(sample_size, unitsize, logic_probelist,
659                                 logic->data, logic->length,
660                                 &filter_out, &filter_out_len);
661                 if (ret != SR_OK)
662                         break;
663
664                 /* what comes out of the filter is guaranteed to be packed into the
665                  * minimum size needed to support the number of samples at this sample
666                  * size. however, the driver may have submitted too much -- cut off
667                  * the buffer of the last packet according to the sample limit.
668                  */
669                 if (limit_samples && (received_samples + logic->length / sample_size >
670                                 limit_samples * sample_size))
671                         filter_out_len = limit_samples * sample_size - received_samples;
672
673                 if (singleds)
674                         sr_datastore_put(singleds, filter_out,
675                                         filter_out_len, sample_size, logic_probelist);
676
677                 if (opt_output_file && default_output_format)
678                         /* saving to a session file, don't need to do anything else
679                          * to this data for now. */
680                         goto cleanup;
681
682                 if (opt_pds) {
683                         if (srd_session_send(received_samples, (uint8_t*)filter_out,
684                                         filter_out_len) != SRD_OK)
685                                 sr_session_stop();
686                 } else {
687                         output_len = 0;
688                         if (o->format->data && packet->type == o->format->df_type)
689                                 o->format->data(o, filter_out, filter_out_len, &output_buf, &output_len);
690                         if (output_buf) {
691                                 fwrite(output_buf, 1, output_len, outfile);
692                                 fflush(outfile);
693                                 g_free(output_buf);
694                         }
695                 }
696
697                 cleanup:
698                 g_free(filter_out);
699                 received_samples += logic->length / sample_size;
700                 break;
701
702         case SR_DF_META_ANALOG:
703                 g_message("cli: Received SR_DF_META_ANALOG");
704                 meta_analog = packet->payload;
705                 num_analog_probes = meta_analog->num_probes;
706                 num_enabled_analog_probes = 0;
707                 for (i = 0; i < num_analog_probes; i++) {
708                         probe = g_slist_nth_data(sdi->probes, i);
709                         if (probe->enabled)
710                                 analog_probelist[num_enabled_analog_probes++] = probe;
711                 }
712
713                 outfile = stdout;
714                 if (opt_output_file) {
715                         if (default_output_format) {
716                                 /* output file is in session format, which means we'll
717                                  * dump everything in the datastore as it comes in,
718                                  * and save from there after the session. */
719                                 outfile = NULL;
720                                 ret = sr_datastore_new(unitsize, &singleds);
721                                 if (ret != SR_OK) {
722                                         g_critical("Failed to create datastore.");
723                                         exit(1);
724                                 }
725                         } else {
726                                 /* saving to a file in whatever format was set
727                                  * with --format, so all we need is a filehandle */
728                                 outfile = g_fopen(opt_output_file, "wb");
729                         }
730                 }
731                 break;
732
733         case SR_DF_ANALOG:
734                 analog = packet->payload;
735                 g_message("cli: received SR_DF_ANALOG, %d samples", analog->num_samples);
736                 if (analog->num_samples == 0)
737                         break;
738
739                 if (limit_samples && received_samples >= limit_samples)
740                         break;
741
742                 if (o->format->data && packet->type == o->format->df_type) {
743                         o->format->data(o, (const uint8_t *)analog->data,
744                                         analog->num_samples * sizeof(float),
745                                         &output_buf, &output_len);
746                         if (output_buf) {
747                                 fwrite(output_buf, 1, output_len, outfile);
748                                 fflush(outfile);
749                                 g_free(output_buf);
750                         }
751                 }
752
753                 received_samples += analog->num_samples;
754                 break;
755
756         case SR_DF_FRAME_BEGIN:
757                 g_debug("cli: received SR_DF_FRAME_BEGIN");
758                 if (o->format->event) {
759                         o->format->event(o, SR_DF_FRAME_BEGIN, &output_buf,
760                                          &output_len);
761                         if (output_buf) {
762                                 fwrite(output_buf, 1, output_len, outfile);
763                                 fflush(outfile);
764                                 g_free(output_buf);
765                         }
766                 }
767                 break;
768
769         case SR_DF_FRAME_END:
770                 g_debug("cli: received SR_DF_FRAME_END");
771                 if (o->format->event) {
772                         o->format->event(o, SR_DF_FRAME_END, &output_buf,
773                                          &output_len);
774                         if (output_buf) {
775                                 fwrite(output_buf, 1, output_len, outfile);
776                                 fflush(outfile);
777                                 g_free(output_buf);
778                         }
779                 }
780                 break;
781
782         default:
783                 g_message("received unknown packet type %d", packet->type);
784         }
785
786 }
787
788 /* Register the given PDs for this session.
789  * Accepts a string of the form: "spi:sck=3:sdata=4,spi:sck=3:sdata=5"
790  * That will instantiate two SPI decoders on the clock but different data
791  * lines.
792  */
793 static int register_pds(struct sr_dev *dev, const char *pdstring)
794 {
795         GHashTable *pd_opthash;
796         struct srd_decoder_inst *di;
797         int ret;
798         char **pdtokens, **pdtok, *pd_name;
799
800         /* Avoid compiler warnings. */
801         (void)dev;
802
803         ret = 0;
804         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
805                         g_free, NULL);
806         pd_name = NULL;
807         pd_opthash = NULL;
808         pdtokens = g_strsplit(pdstring, ",", 0);
809         for (pdtok = pdtokens; *pdtok; pdtok++) {
810                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
811                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
812                         goto err_out;
813                 }
814
815                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
816                 g_hash_table_remove(pd_opthash, "sigrok_key");
817                 if (srd_decoder_load(pd_name) != SRD_OK) {
818                         g_critical("Failed to load protocol decoder %s.", pd_name);
819                         ret = 1;
820                         goto err_out;
821                 }
822                 if (!(di = srd_inst_new(pd_name, pd_opthash))) {
823                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
824                         ret = 1;
825                         goto err_out;
826                 }
827
828                 /* If no annotation list was specified, add them all in now.
829                  * This will be pared down later to leave only the last PD
830                  * in the stack.
831                  */
832                 if (!opt_pd_annotations)
833                         g_hash_table_insert(pd_ann_visible,
834                                             g_strdup(di->inst_id), NULL);
835
836                 /* Any keys left in the options hash are probes, where the key
837                  * is the probe name as specified in the decoder class, and the
838                  * value is the probe number i.e. the order in which the PD's
839                  * incoming samples are arranged. */
840                 if (srd_inst_probe_set_all(di, pd_opthash) != SRD_OK) {
841                         ret = 1;
842                         goto err_out;
843                 }
844                 g_hash_table_destroy(pd_opthash);
845                 pd_opthash = NULL;
846         }
847
848 err_out:
849         g_strfreev(pdtokens);
850         if (pd_opthash)
851                 g_hash_table_destroy(pd_opthash);
852         if (pd_name)
853                 g_free(pd_name);
854
855         return ret;
856 }
857
858 int setup_pd_stack(void)
859 {
860         struct srd_decoder_inst *di_from, *di_to;
861         int ret, i;
862         char **pds, **ids;
863
864         /* Set up the protocol decoder stack. */
865         pds = g_strsplit(opt_pds, ",", 0);
866         if (g_strv_length(pds) > 1) {
867                 if (opt_pd_stack) {
868                         /* A stack setup was specified, use that. */
869                         g_strfreev(pds);
870                         pds = g_strsplit(opt_pd_stack, ",", 0);
871                         if (g_strv_length(pds) < 2) {
872                                 g_strfreev(pds);
873                                 g_critical("Specify at least two protocol decoders to stack.");
874                                 return 1;
875                         }
876                 }
877
878                 /* First PD goes at the bottom of the stack. */
879                 ids = g_strsplit(pds[0], ":", 0);
880                 if (!(di_from = srd_inst_find_by_id(ids[0]))) {
881                         g_strfreev(ids);
882                         g_critical("Cannot stack protocol decoder '%s': "
883                                         "instance not found.", pds[0]);
884                         return 1;
885                 }
886                 g_strfreev(ids);
887
888                 /* Every subsequent PD goes on top. */
889                 for (i = 1; pds[i]; i++) {
890                         ids = g_strsplit(pds[i], ":", 0);
891                         if (!(di_to = srd_inst_find_by_id(ids[0]))) {
892                                 g_strfreev(ids);
893                                 g_critical("Cannot stack protocol decoder '%s': "
894                                                 "instance not found.", pds[i]);
895                                 return 1;
896                         }
897                         g_strfreev(ids);
898                         if ((ret = srd_inst_stack(di_from, di_to)) != SRD_OK)
899                                 return 1;
900
901                         /* Don't show annotation from this PD. Only the last PD in
902                          * the stack will be left on the annotation list (unless
903                          * the annotation list was specifically provided).
904                          */
905                         if (!opt_pd_annotations)
906                                 g_hash_table_remove(pd_ann_visible,
907                                                     di_from->inst_id);
908
909                         di_from = di_to;
910                 }
911         }
912         g_strfreev(pds);
913
914         return 0;
915 }
916
917 int setup_pd_annotations(void)
918 {
919         GSList *l;
920         struct srd_decoder *dec;
921         int ann;
922         char **pds, **pdtok, **keyval, **ann_descr;
923
924         /* Set up custom list of PDs and annotations to show. */
925         if (opt_pd_annotations) {
926                 pds = g_strsplit(opt_pd_annotations, ",", 0);
927                 for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
928                         ann = 0;
929                         keyval = g_strsplit(*pdtok, "=", 0);
930                         if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
931                                 g_critical("Protocol decoder '%s' not found.", keyval[0]);
932                                 return 1;
933                         }
934                         if (!dec->annotations) {
935                                 g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
936                                 return 1;
937                         }
938                         if (g_strv_length(keyval) == 2) {
939                                 for (l = dec->annotations; l; l = l->next, ann++) {
940                                         ann_descr = l->data;
941                                         if (!canon_cmp(ann_descr[0], keyval[1]))
942                                                 /* Found it. */
943                                                 break;
944                                 }
945                                 if (!l) {
946                                         g_critical("Annotation '%s' not found "
947                                                         "for protocol decoder '%s'.", keyval[1], keyval[0]);
948                                         return 1;
949                                 }
950                         }
951                         g_debug("cli: showing protocol decoder annotation %d from '%s'", ann, keyval[0]);
952                         g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]), GINT_TO_POINTER(ann));
953                         g_strfreev(keyval);
954                 }
955                 g_strfreev(pds);
956         }
957
958         return 0;
959 }
960
961 int setup_output_format(void)
962 {
963         GHashTable *fmtargs;
964         GHashTableIter iter;
965         gpointer key, value;
966         struct sr_output_format **outputs;
967         int i;
968         char *fmtspec;
969
970         if (!opt_output_format) {
971                 opt_output_format = DEFAULT_OUTPUT_FORMAT;
972                 /* we'll need to remember this so when saving to a file
973                  * later, sigrok session format will be used.
974                  */
975                 default_output_format = TRUE;
976         }
977
978         fmtargs = parse_generic_arg(opt_output_format, TRUE);
979         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
980         if (!fmtspec) {
981                 g_critical("Invalid output format.");
982                 return 1;
983         }
984         outputs = sr_output_list();
985         for (i = 0; outputs[i]; i++) {
986                 if (strcmp(outputs[i]->id, fmtspec))
987                         continue;
988                 g_hash_table_remove(fmtargs, "sigrok_key");
989                 output_format = outputs[i];
990                 g_hash_table_iter_init(&iter, fmtargs);
991                 while (g_hash_table_iter_next(&iter, &key, &value)) {
992                         /* only supporting one parameter per output module
993                          * for now, and only its value */
994                         output_format_param = g_strdup(value);
995                         break;
996                 }
997                 break;
998         }
999         if (!output_format) {
1000                 g_critical("Invalid output format %s.", opt_output_format);
1001                 return 1;
1002         }
1003         g_hash_table_destroy(fmtargs);
1004
1005         return 0;
1006 }
1007
1008 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
1009 {
1010         int i;
1011         char **annotations;
1012         gpointer ann_format;
1013
1014         /* 'cb_data' is not used in this specific callback. */
1015         (void)cb_data;
1016
1017         if (!pd_ann_visible)
1018                 return;
1019
1020         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
1021                         NULL, &ann_format))
1022                 /* Not in the list of PDs whose annotations we're showing. */
1023                 return;
1024
1025         if (pdata->ann_format != GPOINTER_TO_INT(ann_format))
1026                 /* We don't want this particular format from the PD. */
1027                 return;
1028
1029         annotations = pdata->data;
1030         if (opt_loglevel > SR_LOG_WARN)
1031                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
1032         printf("%s: ", pdata->pdo->proto_id);
1033         for (i = 0; annotations[i]; i++)
1034                 printf("\"%s\" ", annotations[i]);
1035         printf("\n");
1036         fflush(stdout);
1037 }
1038
1039 static int select_probes(struct sr_dev_inst *sdi)
1040 {
1041         char **probelist;
1042         int max_probes, i;
1043
1044         if (!opt_probes)
1045                 return SR_OK;
1046
1047         /*
1048          * This only works because a device by default initializes
1049          * and enables all its probes.
1050          */
1051         max_probes = g_slist_length(sdi->probes);
1052         probelist = parse_probestring(max_probes, opt_probes);
1053         if (!probelist) {
1054                 return SR_ERR;
1055         }
1056
1057         for (i = 0; i < max_probes; i++) {
1058                 if (probelist[i]) {
1059                         sr_dev_probe_name_set(sdi, i, probelist[i]);
1060                         g_free(probelist[i]);
1061                 } else {
1062                         sr_dev_probe_enable(sdi, i, FALSE);
1063                 }
1064         }
1065         g_free(probelist);
1066
1067         return SR_OK;
1068 }
1069
1070 /**
1071  * Return the input file format which the CLI tool should use.
1072  *
1073  * If the user specified -I / --input-format, use that one. Otherwise, try to
1074  * autodetect the format as good as possible. Failing that, return NULL.
1075  *
1076  * @param filename The filename of the input file. Must not be NULL.
1077  * @param opt The -I / --input-file option the user specified (or NULL).
1078  *
1079  * @return A pointer to the 'struct sr_input_format' that should be used,
1080  *         or NULL if no input format was selected or auto-detected.
1081  */
1082 static struct sr_input_format *determine_input_file_format(
1083                         const char *filename, const char *opt)
1084 {
1085         int i;
1086         struct sr_input_format **inputs;
1087
1088         /* If there are no input formats, return NULL right away. */
1089         inputs = sr_input_list();
1090         if (!inputs) {
1091                 g_critical("No supported input formats available.");
1092                 return NULL;
1093         }
1094
1095         /* If the user specified -I / --input-format, use that one. */
1096         if (opt) {
1097                 for (i = 0; inputs[i]; i++) {
1098                         if (strcasecmp(inputs[i]->id, opt))
1099                                 continue;
1100                         g_debug("Using user-specified input file format '%s'.",
1101                                         inputs[i]->id);
1102                         return inputs[i];
1103                 }
1104
1105                 /* The user specified an unknown input format, return NULL. */
1106                 g_critical("Error: specified input file format '%s' is "
1107                         "unknown.", opt);
1108                 return NULL;
1109         }
1110
1111         /* Otherwise, try to find an input module that can handle this file. */
1112         for (i = 0; inputs[i]; i++) {
1113                 if (inputs[i]->format_match(filename))
1114                         break;
1115         }
1116
1117         /* Return NULL if no input module wanted to touch this. */
1118         if (!inputs[i]) {
1119                 g_critical("Error: no matching input module found.");
1120                 return NULL;
1121         }
1122
1123         g_debug("cli: Autodetected '%s' input format for file '%s'.",
1124                 inputs[i]->id, filename);
1125                 
1126         return inputs[i];
1127 }
1128
1129 static void load_input_file_format(void)
1130 {
1131         GHashTable *fmtargs = NULL;
1132         struct stat st;
1133         struct sr_input *in;
1134         struct sr_input_format *input_format;
1135         char *fmtspec = NULL;
1136
1137         if (opt_input_format) {
1138                 fmtargs = parse_generic_arg(opt_input_format, TRUE);
1139                 fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
1140         }
1141
1142         if (!(input_format = determine_input_file_format(opt_input_file,
1143                                                    fmtspec))) {
1144                 /* The exact cause was already logged. */
1145                 return;
1146         }
1147
1148         if (fmtargs)
1149                 g_hash_table_remove(fmtargs, "sigrok_key");
1150
1151         if (stat(opt_input_file, &st) == -1) {
1152                 g_critical("Failed to load %s: %s", opt_input_file,
1153                         strerror(errno));
1154                 exit(1);
1155         }
1156
1157         /* Initialize the input module. */
1158         if (!(in = g_try_malloc(sizeof(struct sr_input)))) {
1159                 g_critical("Failed to allocate input module.");
1160                 exit(1);
1161         }
1162         in->format = input_format;
1163         in->param = fmtargs;
1164         if (in->format->init) {
1165                 if (in->format->init(in) != SR_OK) {
1166                         g_critical("Input format init failed.");
1167                         exit(1);
1168                 }
1169         }
1170
1171         if (select_probes(in->sdi) > 0)
1172             return;
1173
1174         sr_session_new();
1175         sr_session_datafeed_callback_add(datafeed_in);
1176         if (sr_session_dev_add(in->sdi) != SR_OK) {
1177                 g_critical("Failed to use device.");
1178                 sr_session_destroy();
1179                 return;
1180         }
1181
1182         input_format->loadfile(in, opt_input_file);
1183         if (opt_output_file && default_output_format) {
1184                 if (sr_session_save(opt_output_file, in->sdi, singleds) != SR_OK)
1185                         g_critical("Failed to save session.");
1186         }
1187         sr_session_destroy();
1188
1189         if (fmtargs)
1190                 g_hash_table_destroy(fmtargs);
1191 }
1192
1193 static void load_input_file(void)
1194 {
1195
1196         if (sr_session_load(opt_input_file) == SR_OK) {
1197                 /* sigrok session file */
1198                 sr_session_datafeed_callback_add(datafeed_in);
1199                 sr_session_start();
1200                 sr_session_run();
1201                 sr_session_stop();
1202         }
1203         else {
1204                 /* fall back on input modules */
1205                 load_input_file_format();
1206         }
1207 }
1208
1209 static int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
1210 {
1211         const struct sr_hwcap_option *hwo;
1212         GHashTableIter iter;
1213         gpointer key, value;
1214         int ret;
1215         float tmp_float;
1216         uint64_t tmp_u64;
1217         struct sr_rational tmp_rat;
1218         gboolean tmp_bool;
1219         void *val;
1220
1221         g_hash_table_iter_init(&iter, args);
1222         while (g_hash_table_iter_next(&iter, &key, &value)) {
1223                 if (!(hwo = sr_devopt_name_get(key))) {
1224                         g_critical("Unknown device option '%s'.", (char *) key);
1225                         return SR_ERR;
1226                 }
1227
1228                 if ((value == NULL) &&
1229                         (hwo->type != SR_T_BOOL)) {
1230                         g_critical("Option '%s' needs a value.", (char *)key);
1231                         return SR_ERR;
1232                 }
1233                 val = NULL;
1234                 switch (hwo->type) {
1235                 case SR_T_UINT64:
1236                         ret = sr_parse_sizestring(value, &tmp_u64);
1237                         if (ret != SR_OK)
1238                                 break;
1239                         val = &tmp_u64;
1240                         break;
1241                 case SR_T_CHAR:
1242                         val = value;
1243                         break;
1244                 case SR_T_BOOL:
1245                         if (!value)
1246                                 tmp_bool = TRUE;
1247                         else
1248                                 tmp_bool = sr_parse_boolstring(value);
1249                         val = &tmp_bool;
1250                         break;
1251                 case SR_T_FLOAT:
1252                         tmp_float = strtof(value, NULL);
1253                         val = &tmp_float;
1254                         break;
1255                 case SR_T_RATIONAL_PERIOD:
1256                         if ((ret = sr_parse_period(value, &tmp_rat)) != SR_OK)
1257                                 break;
1258                         val = &tmp_rat;
1259                         break;
1260                 case SR_T_RATIONAL_VOLT:
1261                         if ((ret = sr_parse_voltage(value, &tmp_rat)) != SR_OK)
1262                                 break;
1263                         val = &tmp_rat;
1264                         break;
1265                 default:
1266                         ret = SR_ERR;
1267                 }
1268                 if (val)
1269                         ret = sr_dev_config_set(sdi, hwo->hwcap, val);
1270                 if (ret != SR_OK) {
1271                         g_critical("Failed to set device option '%s'.", (char *)key);
1272                         return ret;
1273                 }
1274                 else
1275                         break;
1276         }
1277
1278         return SR_OK;
1279 }
1280
1281 static int set_limit_time(const struct sr_dev_inst *sdi)
1282 {
1283         uint64_t time_msec;
1284         uint64_t *samplerate;
1285
1286         time_msec = sr_parse_timestring(opt_time);
1287         if (time_msec == 0) {
1288                 g_critical("Invalid time '%s'", opt_time);
1289                 sr_session_destroy();
1290                 return SR_ERR;
1291         }
1292
1293         if (sr_driver_hwcap_exists(sdi->driver, SR_HWCAP_LIMIT_MSEC)) {
1294                 if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_MSEC, &time_msec) != SR_OK) {
1295                         g_critical("Failed to configure time limit.");
1296                         sr_session_destroy();
1297                         return SR_ERR;
1298                 }
1299         }
1300         else {
1301                 /* time limit set, but device doesn't support this...
1302                  * convert to samples based on the samplerate.
1303                  */
1304                 limit_samples = 0;
1305                 if (sr_dev_has_hwcap(sdi, SR_HWCAP_SAMPLERATE)) {
1306                         sr_info_get(sdi->driver, SR_DI_CUR_SAMPLERATE,
1307                                         (const void **)&samplerate, sdi);
1308                         limit_samples = (*samplerate) * time_msec / (uint64_t)1000;
1309                 }
1310                 if (limit_samples == 0) {
1311                         g_critical("Not enough time at this samplerate.");
1312                         sr_session_destroy();
1313                         return SR_ERR;
1314                 }
1315
1316                 if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
1317                                         &limit_samples) != SR_OK) {
1318                         g_critical("Failed to configure time-based sample limit.");
1319                         sr_session_destroy();
1320                         return SR_ERR;
1321                 }
1322         }
1323
1324         return SR_OK;
1325 }
1326
1327 static void run_session(void)
1328 {
1329         GSList *devices;
1330         GHashTable *devargs;
1331         struct sr_dev_inst *sdi;
1332         int max_probes, i;
1333         char **triggerlist;
1334
1335         devices = device_scan();
1336         if (!devices) {
1337                 g_critical("No devices found.");
1338                 return;
1339         }
1340         if (g_slist_length(devices) > 1) {
1341                 g_critical("sigrok-cli only supports one device for capturing.");
1342                 return;
1343         }
1344         sdi = devices->data;
1345
1346         sr_session_new();
1347         sr_session_datafeed_callback_add(datafeed_in);
1348
1349         if (sr_session_dev_add(sdi) != SR_OK) {
1350                 g_critical("Failed to use device.");
1351                 sr_session_destroy();
1352                 return;
1353         }
1354
1355         if (opt_dev) {
1356                 if ((devargs = parse_generic_arg(opt_dev, FALSE))) {
1357                         if (set_dev_options(sdi, devargs) != SR_OK)
1358                                 return;
1359                         g_hash_table_destroy(devargs);
1360                 }
1361         }
1362
1363         if (select_probes(sdi) != SR_OK) {
1364                 g_critical("Failed to set probes.");
1365                 sr_session_destroy();
1366                 return;
1367         }
1368
1369         if (opt_triggers) {
1370                 if (!(triggerlist = sr_parse_triggerstring(sdi, opt_triggers))) {
1371                         sr_session_destroy();
1372                         return;
1373                 }
1374                 max_probes = g_slist_length(sdi->probes);
1375                 for (i = 0; i < max_probes; i++) {
1376                         if (triggerlist[i]) {
1377                                 sr_dev_trigger_set(sdi, i, triggerlist[i]);
1378                                 g_free(triggerlist[i]);
1379                         }
1380                 }
1381                 g_free(triggerlist);
1382         }
1383
1384         if (opt_continuous) {
1385                 if (!sr_driver_hwcap_exists(sdi->driver, SR_HWCAP_CONTINUOUS)) {
1386                         g_critical("This device does not support continuous sampling.");
1387                         sr_session_destroy();
1388                         return;
1389                 }
1390         }
1391
1392         if (opt_time) {
1393                 if (set_limit_time(sdi) != SR_OK) {
1394                         sr_session_destroy();
1395                         return;
1396                 }
1397         }
1398
1399         if (opt_samples) {
1400                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)
1401                                 || (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
1402                                                 &limit_samples) != SR_OK)) {
1403                         g_critical("Failed to configure sample limit.");
1404                         sr_session_destroy();
1405                         return;
1406                 }
1407         }
1408
1409         if (opt_frames) {
1410                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)
1411                                 || (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_FRAMES,
1412                                                 &limit_frames) != SR_OK)) {
1413                         g_critical("Failed to configure frame limit.");
1414                         sr_session_destroy();
1415                         return;
1416                 }
1417         }
1418
1419         if (sr_session_start() != SR_OK) {
1420                 g_critical("Failed to start session.");
1421                 sr_session_destroy();
1422                 return;
1423         }
1424
1425         if (opt_continuous)
1426                 add_anykey();
1427
1428         sr_session_run();
1429
1430         if (opt_continuous)
1431                 clear_anykey();
1432
1433         if (opt_output_file && default_output_format) {
1434                 if (sr_session_save(opt_output_file, sdi, singleds) != SR_OK)
1435                         g_critical("Failed to save session.");
1436         }
1437         sr_session_destroy();
1438         g_slist_free(devices);
1439
1440 }
1441
1442 static void logger(const gchar *log_domain, GLogLevelFlags log_level,
1443                    const gchar *message, gpointer cb_data)
1444 {
1445         /* Avoid compiler warnings. */
1446         (void)log_domain;
1447         (void)cb_data;
1448
1449         /*
1450          * All messages, warnings, errors etc. go to stderr (not stdout) in
1451          * order to not mess up the CLI tool data output, e.g. VCD output.
1452          */
1453         if (log_level & (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)
1454                         || opt_loglevel > SR_LOG_WARN) {
1455                 fprintf(stderr, "%s\n", message);
1456                 fflush(stderr);
1457         }
1458 }
1459
1460 int main(int argc, char **argv)
1461 {
1462         GOptionContext *context;
1463         GError *error;
1464
1465         g_log_set_default_handler(logger, NULL);
1466
1467         error = NULL;
1468         context = g_option_context_new(NULL);
1469         g_option_context_add_main_entries(context, optargs, NULL);
1470
1471         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1472                 g_critical("%s", error->message);
1473                 return 1;
1474         }
1475
1476         /* Set the loglevel (amount of messages to output) for libsigrok. */
1477         if (sr_log_loglevel_set(opt_loglevel) != SR_OK)
1478                 return 1;
1479
1480         /* Set the loglevel (amount of messages to output) for libsigrokdecode. */
1481         if (srd_log_loglevel_set(opt_loglevel) != SRD_OK)
1482                 return 1;
1483
1484         if (sr_init() != SR_OK)
1485                 return 1;
1486
1487         if (opt_pds) {
1488                 if (srd_init(NULL) != SRD_OK)
1489                         return 1;
1490                 if (register_pds(NULL, opt_pds) != 0)
1491                         return 1;
1492                 if (srd_pd_output_callback_add(SRD_OUTPUT_ANN,
1493                                 show_pd_annotations, NULL) != SRD_OK)
1494                         return 1;
1495                 if (setup_pd_stack() != 0)
1496                         return 1;
1497                 if (setup_pd_annotations() != 0)
1498                         return 1;
1499         }
1500
1501         if (setup_output_format() != 0)
1502                 return 1;
1503
1504         if (opt_version)
1505                 show_version();
1506         else if (opt_list_devs)
1507                 show_dev_list();
1508         else if (opt_pds && opt_show)
1509                 show_pd_detail();
1510         else if (opt_show)
1511                 show_dev_detail();
1512         else if (opt_input_file)
1513                 load_input_file();
1514         else if (opt_samples || opt_time || opt_frames || opt_continuous)
1515                 run_session();
1516         else
1517                 printf("%s", g_option_context_get_help(context, TRUE, NULL));
1518
1519         if (opt_pds)
1520                 srd_exit();
1521
1522         g_option_context_free(context);
1523         sr_exit();
1524
1525         return 0;
1526 }