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 struct sr_context *sr_ctx = NULL;
  40
  41 static uint64_t limit_samples = 0;
  42 static uint64_t limit_frames = 0;
  43 static struct sr_output_format *output_format = NULL;
  44 static int default_output_format = FALSE;
  45 static char *output_format_param = NULL;
  46 static GHashTable *pd_ann_visible = NULL;
  47 static struct sr_datastore *singleds = NULL;
  48
  49 static gboolean opt_version = FALSE;
  50 static gint opt_loglevel = SR_LOG_WARN; /* Show errors+warnings per default. */
  51 static gboolean opt_list_devs = FALSE;
  52 static gboolean opt_wait_trigger = FALSE;
  53 static gchar *opt_input_file = NULL;
  54 static gchar *opt_output_file = NULL;
  55 static gchar *opt_drv = NULL;
  56 static gchar *opt_dev = NULL;
  57 static gchar *opt_probes = NULL;
  58 static gchar *opt_triggers = NULL;
  59 static gchar *opt_pds = NULL;
  60 static gchar *opt_pd_stack = NULL;
  61 static gchar *opt_pd_annotations = NULL;
  62 static gchar *opt_input_format = NULL;
  63 static gchar *opt_output_format = NULL;
  64 static gchar *opt_show = NULL;
  65 static gchar *opt_time = NULL;
  66 static gchar *opt_samples = NULL;
  67 static gchar *opt_frames = NULL;
  68 static gchar *opt_continuous = NULL;
  69
  70 static GOptionEntry optargs[] = {
  71         {"version", 'V', 0, G_OPTION_ARG_NONE, &opt_version,
  72                         "Show version and support list", NULL},
  73         {"loglevel", 'l', 0, G_OPTION_ARG_INT, &opt_loglevel,
  74                         "Set libsigrok/libsigrokdecode loglevel", NULL},
  75         {"list-devices", 'D', 0, G_OPTION_ARG_NONE, &opt_list_devs,
  76                         "Scan for devices", NULL},
  77         {"driver", 0, 0, G_OPTION_ARG_STRING, &opt_drv,
  78                         "Use only this driver", NULL},
  79         {"device", 'd', 0, G_OPTION_ARG_STRING, &opt_dev,
  80                         "Use specified device", NULL},
  81         {"input-file", 'i', 0, G_OPTION_ARG_FILENAME, &opt_input_file,
  82                         "Load input from file", NULL},
  83         {"input-format", 'I', 0, G_OPTION_ARG_STRING, &opt_input_format,
  84                         "Input format", NULL},
  85         {"output-file", 'o', 0, G_OPTION_ARG_FILENAME, &opt_output_file,
  86                         "Save output to file", NULL},
  87         {"output-format", 'O', 0, G_OPTION_ARG_STRING, &opt_output_format,
  88                         "Output format", NULL},
  89         {"probes", 'p', 0, G_OPTION_ARG_STRING, &opt_probes,
  90                         "Probes to use", NULL},
  91         {"triggers", 't', 0, G_OPTION_ARG_STRING, &opt_triggers,
  92                         "Trigger configuration", NULL},
  93         {"wait-trigger", 'w', 0, G_OPTION_ARG_NONE, &opt_wait_trigger,
  94                         "Wait for trigger", NULL},
  95         {"protocol-decoders", 'a', 0, G_OPTION_ARG_STRING, &opt_pds,
  96                         "Protocol decoders to run", NULL},
  97         {"protocol-decoder-stack", 's', 0, G_OPTION_ARG_STRING, &opt_pd_stack,
  98                         "Protocol decoder stack", NULL},
  99         {"protocol-decoder-annotations", 'A', 0, G_OPTION_ARG_STRING, &opt_pd_annotations,
 100                         "Protocol decoder annotation(s) to show", NULL},
 101         {"show", 0, 0, G_OPTION_ARG_NONE, &opt_show,
 102                         "Show device detail", NULL},
 103         {"time", 0, 0, G_OPTION_ARG_STRING, &opt_time,
 104                         "How long to sample (ms)", NULL},
 105         {"samples", 0, 0, G_OPTION_ARG_STRING, &opt_samples,
 106                         "Number of samples to acquire", NULL},
 107         {"frames", 0, 0, G_OPTION_ARG_STRING, &opt_frames,
 108                         "Number of frames to acquire", NULL},
 109         {"continuous", 0, 0, G_OPTION_ARG_NONE, &opt_continuous,
 110                         "Sample continuously", NULL},
 111         {NULL, 0, 0, 0, NULL, NULL, NULL}
 112 };
 113
 114
 115 /* Convert driver options hash to GSList of struct sr_hwopt. */
 116 static GSList *hash_to_hwopt(GHashTable *hash)
 117 {
 118         const struct sr_hwcap_option *hwo;
 119         struct sr_hwopt *hwopt;
 120         GList *gl, *keys;
 121         GSList *opts;
 122         char *key, *value;
 123
 124         keys = g_hash_table_get_keys(hash);
 125         opts = NULL;
 126         for (gl = keys; gl; gl = gl->next) {
 127                 key = gl->data;
 128                 if (!(hwo = sr_drvopt_name_get(key))) {
 129                         g_critical("Unknown option %s", key);
 130                         return NULL;
 131                 }
 132                 hwopt = g_try_malloc(sizeof(struct sr_hwopt));
 133                 hwopt->hwopt = hwo->hwcap;
 134                 value = g_hash_table_lookup(hash, key);
 135                 hwopt->value = g_strdup(value);
 136                 opts = g_slist_append(opts, hwopt);
 137         }
 138         g_list_free(keys);
 139
 140         return opts;
 141 }
 142
 143 static void free_hwopt(struct sr_hwopt *hwopt)
 144 {
 145         g_free((void *)hwopt->value);
 146         g_free(hwopt);
 147 }
 148
 149 static GSList *device_scan(void)
 150 {
 151         struct sr_dev_driver **drivers, *driver;
 152         GHashTable *drvargs;
 153         GSList *drvopts, *devices, *tmpdevs, *l;
 154         int i;
 155         char *drvname;
 156
 157         if (opt_drv) {
 158                 drvargs = parse_generic_arg(opt_drv, TRUE);
 159                 drvname = g_strdup(g_hash_table_lookup(drvargs, "sigrok_key"));
 160                 g_hash_table_remove(drvargs, "sigrok_key");
 161                 driver = NULL;
 162                 drivers = sr_driver_list();
 163                 for (i = 0; drivers[i]; i++) {
 164                         if (strcmp(drivers[i]->name, drvname))
 165                                 continue;
 166                         driver = drivers[i];
 167                 }
 168                 if (!driver) {
 169                         g_critical("Driver %s not found.", drvname);
 170                         return NULL;
 171                 }
 172                 g_free(drvname);
 173                 if (sr_driver_init(sr_ctx, driver) != SR_OK) {
 174                         g_critical("Failed to initialize driver.");
 175                         return NULL;
 176                 }
 177                 drvopts = NULL;
 178                 if (g_hash_table_size(drvargs) > 0)
 179                         if (!(drvopts = hash_to_hwopt(drvargs)))
 180                                 /* Unknown options, already logged. */
 181                                 return NULL;
 182                 devices = sr_driver_scan(driver, drvopts);
 183                 g_slist_free_full(drvopts, (GDestroyNotify)free_hwopt);
 184         } else {
 185                 /* No driver specified, let them all scan on their own. */
 186                 devices = NULL;
 187                 drivers = sr_driver_list();
 188                 for (i = 0; drivers[i]; i++) {
 189                         driver = drivers[i];
 190                         if (sr_driver_init(sr_ctx, driver) != SR_OK) {
 191                                 g_critical("Failed to initialize driver.");
 192                                 return NULL;
 193                         }
 194                         tmpdevs = sr_driver_scan(driver, NULL);
 195                         for (l = tmpdevs; l; l = l->next)
 196                                 devices = g_slist_append(devices, l->data);
 197                         g_slist_free(tmpdevs);
 198                 }
 199         }
 200
 201         return devices;
 202 }
 203
 204 static void show_version(void)
 205 {
 206         const GSList *l;
 207         struct sr_dev_driver **drivers;
 208         struct sr_input_format **inputs;
 209         struct sr_output_format **outputs;
 210         struct srd_decoder *dec;
 211         int i;
 212
 213         printf("sigrok-cli %s\n\n", VERSION);
 214
 215         printf("Using libsigrok %s (lib version %s).\n",
 216                sr_package_version_string_get(), sr_lib_version_string_get());
 217         printf("Using libsigrokdecode %s (lib version %s).\n\n",
 218                srd_package_version_string_get(), srd_lib_version_string_get());
 219
 220         printf("Supported hardware drivers:\n");
 221         drivers = sr_driver_list();
 222         for (i = 0; drivers[i]; i++) {
 223                 printf("  %-20s %s\n", drivers[i]->name, drivers[i]->longname);
 224         }
 225         printf("\n");
 226
 227         printf("Supported input formats:\n");
 228         inputs = sr_input_list();
 229         for (i = 0; inputs[i]; i++)
 230                 printf("  %-20s %s\n", inputs[i]->id, inputs[i]->description);
 231         printf("\n");
 232
 233         printf("Supported output formats:\n");
 234         outputs = sr_output_list();
 235         for (i = 0; outputs[i]; i++)
 236                 printf("  %-20s %s\n", outputs[i]->id, outputs[i]->description);
 237         printf("\n");
 238
 239         if (srd_init(NULL) == SRD_OK) {
 240                 printf("Supported protocol decoders:\n");
 241                 srd_decoder_load_all();
 242                 for (l = srd_decoder_list(); l; l = l->next) {
 243                         dec = l->data;
 244                         printf("  %-20s %s\n", dec->id, dec->longname);
 245                         /* Print protocol description upon "-l 3" or higher. */
 246                         if (opt_loglevel >= SR_LOG_INFO)
 247                                 printf("  %-20s %s\n", "", dec->desc);
 248                 }
 249                 srd_exit();
 250         }
 251         printf("\n");
 252 }
 253
 254 static void print_dev_line(const struct sr_dev_inst *sdi)
 255 {
 256         struct sr_probe *probe;
 257         GSList *l;
 258
 259         if (sdi->vendor && sdi->vendor[0])
 260                 printf("%s ", sdi->vendor);
 261         if (sdi->model && sdi->model[0])
 262                 printf("%s ", sdi->model);
 263         if (sdi->version && sdi->version[0])
 264                 printf("%s ", sdi->version);
 265         if (sdi->probes) {
 266                 if (g_slist_length(sdi->probes) == 1) {
 267                         probe = sdi->probes->data;
 268                         printf("with 1 probe: %s", probe->name);
 269                 } else {
 270                         printf("with %d probes:", g_slist_length(sdi->probes));
 271                         for (l = sdi->probes; l; l = l->next) {
 272                                 probe = l->data;
 273                                 printf(" %s", probe->name);
 274                         }
 275                 }
 276         }
 277         printf("\n");
 278 }
 279
 280 static void show_dev_list(void)
 281 {
 282         struct sr_dev_inst *sdi;
 283         GSList *devices, *l;
 284
 285         if (!(devices = device_scan()))
 286                 return;
 287
 288         printf("The following devices were found:\n");
 289         for (l = devices; l; l = l->next) {
 290                 sdi = l->data;
 291                 print_dev_line(sdi);
 292         }
 293         g_slist_free(devices);
 294
 295 }
 296
 297 static void show_dev_detail(void)
 298 {
 299         struct sr_dev_inst *sdi;
 300         const struct sr_hwcap_option *hwo;
 301         const struct sr_samplerates *samplerates;
 302         struct sr_rational *rationals;
 303         GSList *devices;
 304         uint64_t *integers;
 305         const int *hwopts, *hwcaps;
 306         int cap, num_devices, n, i;
 307         char *s, *title;
 308         const char *charopts, **stropts;
 309
 310         if (!(devices = device_scan())) {
 311                 g_critical("No devices found.");
 312                 return;
 313         }
 314
 315         num_devices = g_slist_length(devices);
 316         if (num_devices > 1) {
 317                 if (!opt_dev) {
 318                         g_critical("%d devices found. Use --list-devices to show them, "
 319                                         "and --device to select one.", num_devices);
 320                         return;
 321                 }
 322                 /* opt_dev is NULL if not specified, which is fine. */
 323                 n = strtol(opt_dev, NULL, 10);
 324                 if (n >= num_devices) {
 325                         g_critical("%d devices found, numbered starting from 0.",
 326                                         num_devices);
 327                         return;
 328                 }
 329                 sdi = g_slist_nth_data(devices, n);
 330         } else
 331                 sdi = g_slist_nth_data(devices, 0);
 332
 333         print_dev_line(sdi);
 334
 335         if (sr_info_get(sdi->driver, SR_DI_TRIGGER_TYPES, (const void **)&charopts,
 336                         sdi) == SR_OK && charopts) {
 337                 printf("Supported triggers: ");
 338                 while (*charopts) {
 339                         printf("%c ", *charopts);
 340                         charopts++;
 341                 }
 342                 printf("\n");
 343         }
 344
 345         if ((sr_info_get(sdi->driver, SR_DI_HWOPTS, (const void **)&hwopts,
 346                         NULL) == SR_OK) && hwopts) {
 347                 printf("Supported driver options:\n");
 348                 for (i = 0; hwopts[i]; i++) {
 349                         if (!(hwo = sr_drvopt_get(hwopts[i])))
 350                                 continue;
 351                         printf("    %s\n", hwo->shortname);
 352                 }
 353         }
 354
 355         title = "Supported device options:\n";
 356         if ((sr_info_get(sdi->driver, SR_DI_HWCAPS, (const void **)&hwcaps,
 357                         NULL) != SR_OK) || !hwcaps)
 358                 /* Driver supports no device instance options. */
 359                 return;
 360
 361         for (cap = 0; hwcaps[cap]; cap++) {
 362                 if (!(hwo = sr_devopt_get(hwcaps[cap])))
 363                         continue;
 364
 365                 if (title) {
 366                         printf("%s", title);
 367                         title = NULL;
 368                 }
 369
 370                 if (hwo->hwcap == SR_HWCAP_PATTERN_MODE) {
 371                         /* Pattern generator modes */
 372                         printf("    %s", hwo->shortname);
 373                         if (sr_info_get(sdi->driver, SR_DI_PATTERNS,
 374                                         (const void **)&stropts, sdi) == SR_OK) {
 375                                 printf(" - supported patterns:\n");
 376                                 for (i = 0; stropts[i]; i++)
 377                                         printf("      %s\n", stropts[i]);
 378                         } else {
 379                                 printf("\n");
 380                         }
 381
 382                 } else if (hwo->hwcap == SR_HWCAP_SAMPLERATE) {
 383                         /* Supported samplerates */
 384                         printf("    %s", hwo->shortname);
 385                         if (sr_info_get(sdi->driver, SR_DI_SAMPLERATES,
 386                                         (const void **)&samplerates, sdi) != SR_OK) {
 387                                 printf("\n");
 388                                 continue;
 389                         }
 390                         if (samplerates->step) {
 391                                 /* low */
 392                                 if (!(s = sr_samplerate_string(samplerates->low)))
 393                                         continue;
 394                                 printf(" (%s", s);
 395                                 g_free(s);
 396                                 /* high */
 397                                 if (!(s = sr_samplerate_string(samplerates->high)))
 398                                         continue;
 399                                 printf(" - %s", s);
 400                                 g_free(s);
 401                                 /* step */
 402                                 if (!(s = sr_samplerate_string(samplerates->step)))
 403                                         continue;
 404                                 printf(" in steps of %s)\n", s);
 405                                 g_free(s);
 406                         } else {
 407                                 printf(" - supported samplerates:\n");
 408                                 for (i = 0; samplerates->list[i]; i++)
 409                                         printf("      %s\n", sr_samplerate_string(samplerates->list[i]));
 410                         }
 411
 412                 } else if (hwo->hwcap == SR_HWCAP_BUFFERSIZE) {
 413                         /* Supported buffer sizes */
 414                         printf("    %s", hwo->shortname);
 415                         if (sr_info_get(sdi->driver, SR_DI_BUFFERSIZES,
 416                                         (const void **)&integers, sdi) != SR_OK) {
 417                                 printf("\n");
 418                                 continue;
 419                         }
 420                         printf(" - supported buffer sizes:\n");
 421                         for (i = 0; integers[i]; i++)
 422                                 printf("      %"PRIu64"\n", integers[i]);
 423
 424                 } else if (hwo->hwcap == SR_HWCAP_TIMEBASE) {
 425                         /* Supported time bases */
 426                         printf("    %s", hwo->shortname);
 427                         if (sr_info_get(sdi->driver, SR_DI_TIMEBASES,
 428                                         (const void **)&rationals, sdi) != SR_OK) {
 429                                 printf("\n");
 430                                 continue;
 431                         }
 432                         printf(" - supported time bases:\n");
 433                         for (i = 0; rationals[i].p && rationals[i].q; i++)
 434                                 printf("      %s\n", sr_period_string(
 435                                                 rationals[i].p * rationals[i].q));
 436
 437                 } else if (hwo->hwcap == SR_HWCAP_TRIGGER_SOURCE) {
 438                         /* Supported trigger sources */
 439                         printf("    %s", hwo->shortname);
 440                         if (sr_info_get(sdi->driver, SR_DI_TRIGGER_SOURCES,
 441                                         (const void **)&stropts, sdi) != SR_OK) {
 442                                 printf("\n");
 443                                 continue;
 444                         }
 445                         printf(" - supported trigger sources:\n");
 446                         for (i = 0; stropts[i]; i++)
 447                                 printf("      %s\n", stropts[i]);
 448
 449                 } else if (hwo->hwcap == SR_HWCAP_FILTER) {
 450                         /* Supported filters */
 451                         printf("    %s", hwo->shortname);
 452                         if (sr_info_get(sdi->driver, SR_DI_FILTERS,
 453                                         (const void **)&stropts, sdi) != SR_OK) {
 454                                 printf("\n");
 455                                 continue;
 456                         }
 457                         printf(" - supported filter targets:\n");
 458                         for (i = 0; stropts[i]; i++)
 459                                 printf("      %s\n", stropts[i]);
 460
 461                 } else if (hwo->hwcap == SR_HWCAP_VDIV) {
 462                         /* Supported volts/div values */
 463                         printf("    %s", hwo->shortname);
 464                         if (sr_info_get(sdi->driver, SR_DI_VDIVS,
 465                                         (const void **)&rationals, sdi) != SR_OK) {
 466                                 printf("\n");
 467                                 continue;
 468                         }
 469                         printf(" - supported volts/div:\n");
 470                         for (i = 0; rationals[i].p && rationals[i].q; i++)
 471                                 printf("      %s\n", sr_voltage_string( &rationals[i]));
 472
 473                 } else if (hwo->hwcap == SR_HWCAP_COUPLING) {
 474                         /* Supported coupling settings */
 475                         printf("    %s", hwo->shortname);
 476                         if (sr_info_get(sdi->driver, SR_DI_COUPLING,
 477                                         (const void **)&stropts, sdi) != SR_OK) {
 478                                 printf("\n");
 479                                 continue;
 480                         }
 481                         printf(" - supported coupling options:\n");
 482                         for (i = 0; stropts[i]; i++)
 483                                 printf("      %s\n", stropts[i]);
 484
 485                 } else {
 486                         /* Everything else */
 487                         printf("    %s\n", hwo->shortname);
 488                 }
 489         }
 490
 491 }
 492
 493 static void show_pd_detail(void)
 494 {
 495         GSList *l;
 496         struct srd_decoder *dec;
 497         char **pdtokens, **pdtok, **ann, *doc;
 498         struct srd_probe *p;
 499
 500         pdtokens = g_strsplit(opt_pds, ",", -1);
 501         for (pdtok = pdtokens; *pdtok; pdtok++) {
 502                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 503                         g_critical("Protocol decoder %s not found.", *pdtok);
 504                         return;
 505                 }
 506                 printf("ID: %s\nName: %s\nLong name: %s\nDescription: %s\n",
 507                                 dec->id, dec->name, dec->longname, dec->desc);
 508                 printf("License: %s\n", dec->license);
 509                 printf("Annotations:\n");
 510                 if (dec->annotations) {
 511                         for (l = dec->annotations; l; l = l->next) {
 512                                 ann = l->data;
 513                                 printf("- %s\n  %s\n", ann[0], ann[1]);
 514                         }
 515                 } else {
 516                         printf("None.\n");
 517                 }
 518                 /* TODO: Print supported decoder options. */
 519                 printf("Required probes:\n");
 520                 if (dec->probes) {
 521                         for (l = dec->probes; l; l = l->next) {
 522                                 p = l->data;
 523                                 printf("- %s (%s): %s\n",
 524                                        p->name, p->id, p->desc);
 525                         }
 526                 } else {
 527                         printf("None.\n");
 528                 }
 529                 printf("Optional probes:\n");
 530                 if (dec->opt_probes) {
 531                         for (l = dec->opt_probes; l; l = l->next) {
 532                                 p = l->data;
 533                                 printf("- %s (%s): %s\n",
 534                                        p->name, p->id, p->desc);
 535                         }
 536                 } else {
 537                         printf("None.\n");
 538                 }
 539                 if ((doc = srd_decoder_doc_get(dec))) {
 540                         printf("Documentation:\n%s\n",
 541                                doc[0] == '\n' ? doc + 1 : doc);
 542                         g_free(doc);
 543                 }
 544         }
 545
 546         g_strfreev(pdtokens);
 547 }
 548
 549 static void datafeed_in(const struct sr_dev_inst *sdi,
 550                 const struct sr_datafeed_packet *packet)
 551 {
 552         static struct sr_output *o = NULL;
 553         static int logic_probelist[SR_MAX_NUM_PROBES] = { -1 };
 554         static uint64_t received_samples = 0;
 555         static int unitsize = 0;
 556         static int triggered = 0;
 557         static FILE *outfile = NULL;
 558         struct sr_probe *probe;
 559         const struct sr_datafeed_logic *logic;
 560         const struct sr_datafeed_meta_logic *meta_logic;
 561         const struct sr_datafeed_analog *analog;
 562         int num_enabled_probes, sample_size, ret, i;
 563         uint64_t output_len, filter_out_len;
 564         uint8_t *output_buf, *filter_out;
 565         GString *out;
 566
 567         /* If the first packet to come in isn't a header, don't even try. */
 568         if (packet->type != SR_DF_HEADER && o == NULL)
 569                 return;
 570
 571         sample_size = -1;
 572         switch (packet->type) {
 573         case SR_DF_HEADER:
 574                 g_debug("cli: Received SR_DF_HEADER");
 575                 /* Initialize the output module. */
 576                 if (!(o = g_try_malloc(sizeof(struct sr_output)))) {
 577                         g_critical("Output module malloc failed.");
 578                         exit(1);
 579                 }
 580                 o->format = output_format;
 581                 o->sdi = (struct sr_dev_inst *)sdi;
 582                 o->param = output_format_param;
 583                 if (o->format->init) {
 584                         if (o->format->init(o) != SR_OK) {
 585                                 g_critical("Output format initialization failed.");
 586                                 exit(1);
 587                         }
 588                 }
 589                 break;
 590
 591         case SR_DF_END:
 592                 g_debug("cli: Received SR_DF_END");
 593                 if (!o) {
 594                         g_debug("cli: double end!");
 595                         break;
 596                 }
 597                 if (o->format->event) {
 598                         o->format->event(o, SR_DF_END, &output_buf, &output_len);
 599                         if (output_buf) {
 600                                 if (outfile)
 601                                         fwrite(output_buf, 1, output_len, outfile);
 602                                 g_free(output_buf);
 603                                 output_len = 0;
 604                         }
 605                 }
 606                 if (limit_samples && received_samples < limit_samples)
 607                         g_warning("Device only sent %" PRIu64 " samples.",
 608                                received_samples);
 609                 if (opt_continuous)
 610                         g_warning("Device stopped after %" PRIu64 " samples.",
 611                                received_samples);
 612                 if (outfile && outfile != stdout)
 613                         fclose(outfile);
 614
 615                 if (o->format->cleanup)
 616                         o->format->cleanup(o);
 617                 g_free(o);
 618                 o = NULL;
 619                 break;
 620
 621         case SR_DF_TRIGGER:
 622                 g_debug("cli: received SR_DF_TRIGGER");
 623                 if (o->format->event)
 624                         o->format->event(o, SR_DF_TRIGGER, &output_buf,
 625                                          &output_len);
 626                 triggered = 1;
 627                 break;
 628
 629         case SR_DF_META_LOGIC:
 630                 g_message("cli: Received SR_DF_META_LOGIC");
 631                 meta_logic = packet->payload;
 632                 num_enabled_probes = 0;
 633                 for (i = 0; i < meta_logic->num_probes; i++) {
 634                         probe = g_slist_nth_data(sdi->probes, i);
 635                         if (probe->enabled)
 636                                 logic_probelist[num_enabled_probes++] = probe->index;
 637                 }
 638                 logic_probelist[num_enabled_probes] = -1;
 639                 /* How many bytes we need to store num_enabled_probes bits */
 640                 unitsize = (num_enabled_probes + 7) / 8;
 641
 642                 outfile = stdout;
 643                 if (opt_output_file) {
 644                         if (default_output_format) {
 645                                 /* output file is in session format, which means we'll
 646                                  * dump everything in the datastore as it comes in,
 647                                  * and save from there after the session. */
 648                                 outfile = NULL;
 649                                 ret = sr_datastore_new(unitsize, &singleds);
 650                                 if (ret != SR_OK) {
 651                                         g_critical("Failed to create datastore.");
 652                                         exit(1);
 653                                 }
 654                         } else {
 655                                 /* saving to a file in whatever format was set
 656                                  * with --format, so all we need is a filehandle */
 657                                 outfile = g_fopen(opt_output_file, "wb");
 658                         }
 659                 }
 660                 if (opt_pds)
 661                         srd_session_start(num_enabled_probes, unitsize,
 662                                         meta_logic->samplerate);
 663                 break;
 664
 665         case SR_DF_LOGIC:
 666                 logic = packet->payload;
 667                 g_message("cli: received SR_DF_LOGIC, %"PRIu64" bytes", logic->length);
 668                 sample_size = logic->unitsize;
 669                 if (logic->length == 0)
 670                         break;
 671
 672                 /* Don't store any samples until triggered. */
 673                 if (opt_wait_trigger && !triggered)
 674                         break;
 675
 676                 if (limit_samples && received_samples >= limit_samples)
 677                         break;
 678
 679                 ret = sr_filter_probes(sample_size, unitsize, logic_probelist,
 680                                 logic->data, logic->length,
 681                                 &filter_out, &filter_out_len);
 682                 if (ret != SR_OK)
 683                         break;
 684
 685                 /* what comes out of the filter is guaranteed to be packed into the
 686                  * minimum size needed to support the number of samples at this sample
 687                  * size. however, the driver may have submitted too much -- cut off
 688                  * the buffer of the last packet according to the sample limit.
 689                  */
 690                 if (limit_samples && (received_samples + logic->length / sample_size >
 691                                 limit_samples * sample_size))
 692                         filter_out_len = limit_samples * sample_size - received_samples;
 693
 694                 if (singleds)
 695                         sr_datastore_put(singleds, filter_out,
 696                                         filter_out_len, sample_size, logic_probelist);
 697
 698                 if (opt_output_file && default_output_format)
 699                         /* saving to a session file, don't need to do anything else
 700                          * to this data for now. */
 701                         goto cleanup;
 702
 703                 if (opt_pds) {
 704                         if (srd_session_send(received_samples, (uint8_t*)filter_out,
 705                                         filter_out_len) != SRD_OK)
 706                                 sr_session_stop();
 707                 } else {
 708                         output_len = 0;
 709                         if (o->format->data && packet->type == o->format->df_type)
 710                                 o->format->data(o, filter_out, filter_out_len, &output_buf, &output_len);
 711                         if (output_buf) {
 712                                 fwrite(output_buf, 1, output_len, outfile);
 713                                 fflush(outfile);
 714                                 g_free(output_buf);
 715                         }
 716                 }
 717
 718                 cleanup:
 719                 g_free(filter_out);
 720                 received_samples += logic->length / sample_size;
 721                 break;
 722
 723         case SR_DF_META_ANALOG:
 724                 g_message("cli: Received SR_DF_META_ANALOG");
 725
 726                 outfile = stdout;
 727                 if (opt_output_file) {
 728                         if (default_output_format) {
 729                                 /* output file is in session format, which means we'll
 730                                  * dump everything in the datastore as it comes in,
 731                                  * and save from there after the session. */
 732                                 outfile = NULL;
 733                                 ret = sr_datastore_new(unitsize, &singleds);
 734                                 if (ret != SR_OK) {
 735                                         g_critical("Failed to create datastore.");
 736                                         exit(1);
 737                                 }
 738                         } else {
 739                                 /* saving to a file in whatever format was set
 740                                  * with --format, so all we need is a filehandle */
 741                                 outfile = g_fopen(opt_output_file, "wb");
 742                         }
 743                 }
 744                 break;
 745
 746         case SR_DF_ANALOG:
 747                 analog = packet->payload;
 748                 g_message("cli: received SR_DF_ANALOG, %d samples", analog->num_samples);
 749                 if (analog->num_samples == 0)
 750                         break;
 751
 752                 if (limit_samples && received_samples >= limit_samples)
 753                         break;
 754
 755                 if (o->format->data && packet->type == o->format->df_type) {
 756                         o->format->data(o, (const uint8_t *)analog->data,
 757                                         analog->num_samples * sizeof(float),
 758                                         &output_buf, &output_len);
 759                         if (output_buf) {
 760                                 fwrite(output_buf, 1, output_len, outfile);
 761                                 fflush(outfile);
 762                                 g_free(output_buf);
 763                         }
 764                 }
 765
 766                 received_samples += analog->num_samples;
 767                 break;
 768
 769         case SR_DF_FRAME_BEGIN:
 770                 g_debug("cli: received SR_DF_FRAME_BEGIN");
 771                 if (o->format->event) {
 772                         o->format->event(o, SR_DF_FRAME_BEGIN, &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         case SR_DF_FRAME_END:
 783                 g_debug("cli: received SR_DF_FRAME_END");
 784                 if (o->format->event) {
 785                         o->format->event(o, SR_DF_FRAME_END, &output_buf,
 786                                          &output_len);
 787                         if (output_buf) {
 788                                 fwrite(output_buf, 1, output_len, outfile);
 789                                 fflush(outfile);
 790                                 g_free(output_buf);
 791                         }
 792                 }
 793                 break;
 794
 795         default:
 796                 g_message("received unknown packet type %d", packet->type);
 797         }
 798
 799         if (o && o->format->recv) {
 800                 out = o->format->recv(o, sdi, packet);
 801                 if (out && out->len) {
 802                         fwrite(out->str, 1, out->len, outfile);
 803                         fflush(outfile);
 804                 }
 805         }
 806
 807 }
 808
 809 /* Register the given PDs for this session.
 810  * Accepts a string of the form: "spi:sck=3:sdata=4,spi:sck=3:sdata=5"
 811  * That will instantiate two SPI decoders on the clock but different data
 812  * lines.
 813  */
 814 static int register_pds(struct sr_dev *dev, const char *pdstring)
 815 {
 816         GHashTable *pd_opthash;
 817         struct srd_decoder_inst *di;
 818         int ret;
 819         char **pdtokens, **pdtok, *pd_name;
 820
 821         (void)dev;
 822
 823         ret = 0;
 824         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 825                         g_free, NULL);
 826         pd_name = NULL;
 827         pd_opthash = NULL;
 828         pdtokens = g_strsplit(pdstring, ",", 0);
 829         for (pdtok = pdtokens; *pdtok; pdtok++) {
 830                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
 831                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 832                         goto err_out;
 833                 }
 834
 835                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 836                 g_hash_table_remove(pd_opthash, "sigrok_key");
 837                 if (srd_decoder_load(pd_name) != SRD_OK) {
 838                         g_critical("Failed to load protocol decoder %s.", pd_name);
 839                         ret = 1;
 840                         goto err_out;
 841                 }
 842                 if (!(di = srd_inst_new(pd_name, pd_opthash))) {
 843                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 844                         ret = 1;
 845                         goto err_out;
 846                 }
 847
 848                 /* If no annotation list was specified, add them all in now.
 849                  * This will be pared down later to leave only the last PD
 850                  * in the stack.
 851                  */
 852                 if (!opt_pd_annotations)
 853                         g_hash_table_insert(pd_ann_visible,
 854                                             g_strdup(di->inst_id), NULL);
 855
 856                 /* Any keys left in the options hash are probes, where the key
 857                  * is the probe name as specified in the decoder class, and the
 858                  * value is the probe number i.e. the order in which the PD's
 859                  * incoming samples are arranged. */
 860                 if (srd_inst_probe_set_all(di, pd_opthash) != SRD_OK) {
 861                         ret = 1;
 862                         goto err_out;
 863                 }
 864                 g_hash_table_destroy(pd_opthash);
 865                 pd_opthash = NULL;
 866         }
 867
 868 err_out:
 869         g_strfreev(pdtokens);
 870         if (pd_opthash)
 871                 g_hash_table_destroy(pd_opthash);
 872         if (pd_name)
 873                 g_free(pd_name);
 874
 875         return ret;
 876 }
 877
 878 int setup_pd_stack(void)
 879 {
 880         struct srd_decoder_inst *di_from, *di_to;
 881         int ret, i;
 882         char **pds, **ids;
 883
 884         /* Set up the protocol decoder stack. */
 885         pds = g_strsplit(opt_pds, ",", 0);
 886         if (g_strv_length(pds) > 1) {
 887                 if (opt_pd_stack) {
 888                         /* A stack setup was specified, use that. */
 889                         g_strfreev(pds);
 890                         pds = g_strsplit(opt_pd_stack, ",", 0);
 891                         if (g_strv_length(pds) < 2) {
 892                                 g_strfreev(pds);
 893                                 g_critical("Specify at least two protocol decoders to stack.");
 894                                 return 1;
 895                         }
 896                 }
 897
 898                 /* First PD goes at the bottom of the stack. */
 899                 ids = g_strsplit(pds[0], ":", 0);
 900                 if (!(di_from = srd_inst_find_by_id(ids[0]))) {
 901                         g_strfreev(ids);
 902                         g_critical("Cannot stack protocol decoder '%s': "
 903                                         "instance not found.", pds[0]);
 904                         return 1;
 905                 }
 906                 g_strfreev(ids);
 907
 908                 /* Every subsequent PD goes on top. */
 909                 for (i = 1; pds[i]; i++) {
 910                         ids = g_strsplit(pds[i], ":", 0);
 911                         if (!(di_to = srd_inst_find_by_id(ids[0]))) {
 912                                 g_strfreev(ids);
 913                                 g_critical("Cannot stack protocol decoder '%s': "
 914                                                 "instance not found.", pds[i]);
 915                                 return 1;
 916                         }
 917                         g_strfreev(ids);
 918                         if ((ret = srd_inst_stack(di_from, di_to)) != SRD_OK)
 919                                 return 1;
 920
 921                         /* Don't show annotation from this PD. Only the last PD in
 922                          * the stack will be left on the annotation list (unless
 923                          * the annotation list was specifically provided).
 924                          */
 925                         if (!opt_pd_annotations)
 926                                 g_hash_table_remove(pd_ann_visible,
 927                                                     di_from->inst_id);
 928
 929                         di_from = di_to;
 930                 }
 931         }
 932         g_strfreev(pds);
 933
 934         return 0;
 935 }
 936
 937 int setup_pd_annotations(void)
 938 {
 939         GSList *l;
 940         struct srd_decoder *dec;
 941         int ann;
 942         char **pds, **pdtok, **keyval, **ann_descr;
 943
 944         /* Set up custom list of PDs and annotations to show. */
 945         if (opt_pd_annotations) {
 946                 pds = g_strsplit(opt_pd_annotations, ",", 0);
 947                 for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 948                         ann = 0;
 949                         keyval = g_strsplit(*pdtok, "=", 0);
 950                         if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 951                                 g_critical("Protocol decoder '%s' not found.", keyval[0]);
 952                                 return 1;
 953                         }
 954                         if (!dec->annotations) {
 955                                 g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
 956                                 return 1;
 957                         }
 958                         if (g_strv_length(keyval) == 2) {
 959                                 for (l = dec->annotations; l; l = l->next, ann++) {
 960                                         ann_descr = l->data;
 961                                         if (!canon_cmp(ann_descr[0], keyval[1]))
 962                                                 /* Found it. */
 963                                                 break;
 964                                 }
 965                                 if (!l) {
 966                                         g_critical("Annotation '%s' not found "
 967                                                         "for protocol decoder '%s'.", keyval[1], keyval[0]);
 968                                         return 1;
 969                                 }
 970                         }
 971                         g_debug("cli: showing protocol decoder annotation %d from '%s'", ann, keyval[0]);
 972                         g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]), GINT_TO_POINTER(ann));
 973                         g_strfreev(keyval);
 974                 }
 975                 g_strfreev(pds);
 976         }
 977
 978         return 0;
 979 }
 980
 981 int setup_output_format(void)
 982 {
 983         GHashTable *fmtargs;
 984         GHashTableIter iter;
 985         gpointer key, value;
 986         struct sr_output_format **outputs;
 987         int i;
 988         char *fmtspec;
 989
 990         if (!opt_output_format) {
 991                 opt_output_format = DEFAULT_OUTPUT_FORMAT;
 992                 /* we'll need to remember this so when saving to a file
 993                  * later, sigrok session format will be used.
 994                  */
 995                 default_output_format = TRUE;
 996         }
 997
 998         fmtargs = parse_generic_arg(opt_output_format, TRUE);
 999         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
1000         if (!fmtspec) {
1001                 g_critical("Invalid output format.");
1002                 return 1;
1003         }
1004         outputs = sr_output_list();
1005         for (i = 0; outputs[i]; i++) {
1006                 if (strcmp(outputs[i]->id, fmtspec))
1007                         continue;
1008                 g_hash_table_remove(fmtargs, "sigrok_key");
1009                 output_format = outputs[i];
1010                 g_hash_table_iter_init(&iter, fmtargs);
1011                 while (g_hash_table_iter_next(&iter, &key, &value)) {
1012                         /* only supporting one parameter per output module
1013                          * for now, and only its value */
1014                         output_format_param = g_strdup(value);
1015                         break;
1016                 }
1017                 break;
1018         }
1019         if (!output_format) {
1020                 g_critical("Invalid output format %s.", opt_output_format);
1021                 return 1;
1022         }
1023         g_hash_table_destroy(fmtargs);
1024
1025         return 0;
1026 }
1027
1028 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
1029 {
1030         int i;
1031         char **annotations;
1032         gpointer ann_format;
1033
1034         /* 'cb_data' is not used in this specific callback. */
1035         (void)cb_data;
1036
1037         if (!pd_ann_visible)
1038                 return;
1039
1040         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
1041                         NULL, &ann_format))
1042                 /* Not in the list of PDs whose annotations we're showing. */
1043                 return;
1044
1045         if (pdata->ann_format != GPOINTER_TO_INT(ann_format))
1046                 /* We don't want this particular format from the PD. */
1047                 return;
1048
1049         annotations = pdata->data;
1050         if (opt_loglevel > SR_LOG_WARN)
1051                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
1052         printf("%s: ", pdata->pdo->proto_id);
1053         for (i = 0; annotations[i]; i++)
1054                 printf("\"%s\" ", annotations[i]);
1055         printf("\n");
1056         fflush(stdout);
1057 }
1058
1059 static int select_probes(struct sr_dev_inst *sdi)
1060 {
1061         struct sr_probe *probe;
1062         GSList *selected_probes, *l;
1063
1064         if (!opt_probes)
1065                 return SR_OK;
1066
1067         if (!(selected_probes = parse_probestring(sdi, opt_probes)))
1068                 return SR_ERR;
1069
1070         for (l = sdi->probes; l; l = l->next) {
1071                 probe = l->data;
1072                 if (g_slist_find(selected_probes, probe))
1073                         probe->enabled = TRUE;
1074                 else
1075                         probe->enabled = FALSE;
1076         }
1077         g_slist_free(selected_probes);
1078
1079         return SR_OK;
1080 }
1081
1082 /**
1083  * Return the input file format which the CLI tool should use.
1084  *
1085  * If the user specified -I / --input-format, use that one. Otherwise, try to
1086  * autodetect the format as good as possible. Failing that, return NULL.
1087  *
1088  * @param filename The filename of the input file. Must not be NULL.
1089  * @param opt The -I / --input-file option the user specified (or NULL).
1090  *
1091  * @return A pointer to the 'struct sr_input_format' that should be used,
1092  *         or NULL if no input format was selected or auto-detected.
1093  */
1094 static struct sr_input_format *determine_input_file_format(
1095                         const char *filename, const char *opt)
1096 {
1097         int i;
1098         struct sr_input_format **inputs;
1099
1100         /* If there are no input formats, return NULL right away. */
1101         inputs = sr_input_list();
1102         if (!inputs) {
1103                 g_critical("No supported input formats available.");
1104                 return NULL;
1105         }
1106
1107         /* If the user specified -I / --input-format, use that one. */
1108         if (opt) {
1109                 for (i = 0; inputs[i]; i++) {
1110                         if (strcasecmp(inputs[i]->id, opt))
1111                                 continue;
1112                         g_debug("Using user-specified input file format '%s'.",
1113                                         inputs[i]->id);
1114                         return inputs[i];
1115                 }
1116
1117                 /* The user specified an unknown input format, return NULL. */
1118                 g_critical("Error: specified input file format '%s' is "
1119                         "unknown.", opt);
1120                 return NULL;
1121         }
1122
1123         /* Otherwise, try to find an input module that can handle this file. */
1124         for (i = 0; inputs[i]; i++) {
1125                 if (inputs[i]->format_match(filename))
1126                         break;
1127         }
1128
1129         /* Return NULL if no input module wanted to touch this. */
1130         if (!inputs[i]) {
1131                 g_critical("Error: no matching input module found.");
1132                 return NULL;
1133         }
1134
1135         g_debug("cli: Autodetected '%s' input format for file '%s'.",
1136                 inputs[i]->id, filename);
1137
1138         return inputs[i];
1139 }
1140
1141 static void load_input_file_format(void)
1142 {
1143         GHashTable *fmtargs = NULL;
1144         struct stat st;
1145         struct sr_input *in;
1146         struct sr_input_format *input_format;
1147         char *fmtspec = NULL;
1148
1149         if (opt_input_format) {
1150                 fmtargs = parse_generic_arg(opt_input_format, TRUE);
1151                 fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
1152         }
1153
1154         if (!(input_format = determine_input_file_format(opt_input_file,
1155                                                    fmtspec))) {
1156                 /* The exact cause was already logged. */
1157                 return;
1158         }
1159
1160         if (fmtargs)
1161                 g_hash_table_remove(fmtargs, "sigrok_key");
1162
1163         if (stat(opt_input_file, &st) == -1) {
1164                 g_critical("Failed to load %s: %s", opt_input_file,
1165                         strerror(errno));
1166                 exit(1);
1167         }
1168
1169         /* Initialize the input module. */
1170         if (!(in = g_try_malloc(sizeof(struct sr_input)))) {
1171                 g_critical("Failed to allocate input module.");
1172                 exit(1);
1173         }
1174         in->format = input_format;
1175         in->param = fmtargs;
1176         if (in->format->init) {
1177                 if (in->format->init(in) != SR_OK) {
1178                         g_critical("Input format init failed.");
1179                         exit(1);
1180                 }
1181         }
1182
1183         if (select_probes(in->sdi) > 0)
1184             return;
1185
1186         sr_session_new();
1187         sr_session_datafeed_callback_add(datafeed_in);
1188         if (sr_session_dev_add(in->sdi) != SR_OK) {
1189                 g_critical("Failed to use device.");
1190                 sr_session_destroy();
1191                 return;
1192         }
1193
1194         input_format->loadfile(in, opt_input_file);
1195         if (opt_output_file && default_output_format) {
1196                 if (sr_session_save(opt_output_file, in->sdi, singleds) != SR_OK)
1197                         g_critical("Failed to save session.");
1198         }
1199         sr_session_destroy();
1200
1201         if (fmtargs)
1202                 g_hash_table_destroy(fmtargs);
1203 }
1204
1205 static void load_input_file(void)
1206 {
1207
1208         if (sr_session_load(opt_input_file) == SR_OK) {
1209                 /* sigrok session file */
1210                 sr_session_datafeed_callback_add(datafeed_in);
1211                 sr_session_start();
1212                 sr_session_run();
1213                 sr_session_stop();
1214         }
1215         else {
1216                 /* fall back on input modules */
1217                 load_input_file_format();
1218         }
1219 }
1220
1221 static int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
1222 {
1223         const struct sr_hwcap_option *hwo;
1224         GHashTableIter iter;
1225         gpointer key, value;
1226         int ret;
1227         float tmp_float;
1228         uint64_t tmp_u64;
1229         struct sr_rational tmp_rat;
1230         gboolean tmp_bool;
1231         void *val;
1232
1233         g_hash_table_iter_init(&iter, args);
1234         while (g_hash_table_iter_next(&iter, &key, &value)) {
1235                 if (!(hwo = sr_devopt_name_get(key))) {
1236                         g_critical("Unknown device option '%s'.", (char *) key);
1237                         return SR_ERR;
1238                 }
1239
1240                 if ((value == NULL) &&
1241                         (hwo->type != SR_T_BOOL)) {
1242                         g_critical("Option '%s' needs a value.", (char *)key);
1243                         return SR_ERR;
1244                 }
1245                 val = NULL;
1246                 switch (hwo->type) {
1247                 case SR_T_UINT64:
1248                         ret = sr_parse_sizestring(value, &tmp_u64);
1249                         if (ret != SR_OK)
1250                                 break;
1251                         val = &tmp_u64;
1252                         break;
1253                 case SR_T_CHAR:
1254                         val = value;
1255                         break;
1256                 case SR_T_BOOL:
1257                         if (!value)
1258                                 tmp_bool = TRUE;
1259                         else
1260                                 tmp_bool = sr_parse_boolstring(value);
1261                         val = &tmp_bool;
1262                         break;
1263                 case SR_T_FLOAT:
1264                         tmp_float = strtof(value, NULL);
1265                         val = &tmp_float;
1266                         break;
1267                 case SR_T_RATIONAL_PERIOD:
1268                         if ((ret = sr_parse_period(value, &tmp_rat)) != SR_OK)
1269                                 break;
1270                         val = &tmp_rat;
1271                         break;
1272                 case SR_T_RATIONAL_VOLT:
1273                         if ((ret = sr_parse_voltage(value, &tmp_rat)) != SR_OK)
1274                                 break;
1275                         val = &tmp_rat;
1276                         break;
1277                 default:
1278                         ret = SR_ERR;
1279                 }
1280                 if (val)
1281                         ret = sr_dev_config_set(sdi, hwo->hwcap, val);
1282                 if (ret != SR_OK) {
1283                         g_critical("Failed to set device option '%s'.", (char *)key);
1284                         return ret;
1285                 }
1286         }
1287
1288         return SR_OK;
1289 }
1290
1291 static int set_limit_time(const struct sr_dev_inst *sdi)
1292 {
1293         uint64_t time_msec;
1294         uint64_t *samplerate;
1295
1296         time_msec = sr_parse_timestring(opt_time);
1297         if (time_msec == 0) {
1298                 g_critical("Invalid time '%s'", opt_time);
1299                 sr_session_destroy();
1300                 return SR_ERR;
1301         }
1302
1303         if (sr_driver_hwcap_exists(sdi->driver, SR_HWCAP_LIMIT_MSEC)) {
1304                 if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_MSEC, &time_msec) != SR_OK) {
1305                         g_critical("Failed to configure time limit.");
1306                         sr_session_destroy();
1307                         return SR_ERR;
1308                 }
1309         }
1310         else {
1311                 /* time limit set, but device doesn't support this...
1312                  * convert to samples based on the samplerate.
1313                  */
1314                 limit_samples = 0;
1315                 if (sr_dev_has_hwcap(sdi, SR_HWCAP_SAMPLERATE)) {
1316                         sr_info_get(sdi->driver, SR_DI_CUR_SAMPLERATE,
1317                                         (const void **)&samplerate, sdi);
1318                         limit_samples = (*samplerate) * time_msec / (uint64_t)1000;
1319                 }
1320                 if (limit_samples == 0) {
1321                         g_critical("Not enough time at this samplerate.");
1322                         sr_session_destroy();
1323                         return SR_ERR;
1324                 }
1325
1326                 if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
1327                                         &limit_samples) != SR_OK) {
1328                         g_critical("Failed to configure time-based sample limit.");
1329                         sr_session_destroy();
1330                         return SR_ERR;
1331                 }
1332         }
1333
1334         return SR_OK;
1335 }
1336
1337 static void run_session(void)
1338 {
1339         GSList *devices;
1340         GHashTable *devargs;
1341         struct sr_dev_inst *sdi;
1342         int max_probes, i;
1343         char **triggerlist;
1344
1345         devices = device_scan();
1346         if (!devices) {
1347                 g_critical("No devices found.");
1348                 return;
1349         }
1350         if (g_slist_length(devices) > 1) {
1351                 g_critical("sigrok-cli only supports one device for capturing.");
1352                 return;
1353         }
1354         sdi = devices->data;
1355
1356         sr_session_new();
1357         sr_session_datafeed_callback_add(datafeed_in);
1358
1359         if (sr_session_dev_add(sdi) != SR_OK) {
1360                 g_critical("Failed to use device.");
1361                 sr_session_destroy();
1362                 return;
1363         }
1364
1365         if (opt_dev) {
1366                 if ((devargs = parse_generic_arg(opt_dev, FALSE))) {
1367                         if (set_dev_options(sdi, devargs) != SR_OK)
1368                                 return;
1369                         g_hash_table_destroy(devargs);
1370                 }
1371         }
1372
1373         if (select_probes(sdi) != SR_OK) {
1374                 g_critical("Failed to set probes.");
1375                 sr_session_destroy();
1376                 return;
1377         }
1378
1379         if (opt_triggers) {
1380                 if (!(triggerlist = sr_parse_triggerstring(sdi, opt_triggers))) {
1381                         sr_session_destroy();
1382                         return;
1383                 }
1384                 max_probes = g_slist_length(sdi->probes);
1385                 for (i = 0; i < max_probes; i++) {
1386                         if (triggerlist[i]) {
1387                                 sr_dev_trigger_set(sdi, i, triggerlist[i]);
1388                                 g_free(triggerlist[i]);
1389                         }
1390                 }
1391                 g_free(triggerlist);
1392         }
1393
1394         if (opt_continuous) {
1395                 if (!sr_driver_hwcap_exists(sdi->driver, SR_HWCAP_CONTINUOUS)) {
1396                         g_critical("This device does not support continuous sampling.");
1397                         sr_session_destroy();
1398                         return;
1399                 }
1400         }
1401
1402         if (opt_time) {
1403                 if (set_limit_time(sdi) != SR_OK) {
1404                         sr_session_destroy();
1405                         return;
1406                 }
1407         }
1408
1409         if (opt_samples) {
1410                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)
1411                                 || (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
1412                                                 &limit_samples) != SR_OK)) {
1413                         g_critical("Failed to configure sample limit.");
1414                         sr_session_destroy();
1415                         return;
1416                 }
1417         }
1418
1419         if (opt_frames) {
1420                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)
1421                                 || (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_FRAMES,
1422                                                 &limit_frames) != SR_OK)) {
1423                         g_critical("Failed to configure frame limit.");
1424                         sr_session_destroy();
1425                         return;
1426                 }
1427         }
1428
1429         if (sr_session_start() != SR_OK) {
1430                 g_critical("Failed to start session.");
1431                 sr_session_destroy();
1432                 return;
1433         }
1434
1435         if (opt_continuous)
1436                 add_anykey();
1437
1438         sr_session_run();
1439
1440         if (opt_continuous)
1441                 clear_anykey();
1442
1443         if (opt_output_file && default_output_format) {
1444                 if (sr_session_save(opt_output_file, sdi, singleds) != SR_OK)
1445                         g_critical("Failed to save session.");
1446         }
1447         sr_session_destroy();
1448         g_slist_free(devices);
1449
1450 }
1451
1452 static void logger(const gchar *log_domain, GLogLevelFlags log_level,
1453                    const gchar *message, gpointer cb_data)
1454 {
1455         (void)log_domain;
1456         (void)cb_data;
1457
1458         /*
1459          * All messages, warnings, errors etc. go to stderr (not stdout) in
1460          * order to not mess up the CLI tool data output, e.g. VCD output.
1461          */
1462         if (log_level & (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)
1463                         || opt_loglevel > SR_LOG_WARN) {
1464                 fprintf(stderr, "%s\n", message);
1465                 fflush(stderr);
1466         }
1467 }
1468
1469 int main(int argc, char **argv)
1470 {
1471         int ret = 1;
1472         GOptionContext *context;
1473         GError *error;
1474
1475         g_log_set_default_handler(logger, NULL);
1476
1477         error = NULL;
1478         context = g_option_context_new(NULL);
1479         g_option_context_add_main_entries(context, optargs, NULL);
1480
1481         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1482                 g_critical("%s", error->message);
1483                 goto done;
1484         }
1485
1486         /* Set the loglevel (amount of messages to output) for libsigrok. */
1487         if (sr_log_loglevel_set(opt_loglevel) != SR_OK)
1488                 goto done;
1489
1490         /* Set the loglevel (amount of messages to output) for libsigrokdecode. */
1491         if (srd_log_loglevel_set(opt_loglevel) != SRD_OK)
1492                 goto done;
1493
1494         if (sr_init(&sr_ctx) != SR_OK)
1495                 goto done;
1496
1497         if (opt_pds) {
1498                 if (srd_init(NULL) != SRD_OK)
1499                         goto done;
1500                 if (register_pds(NULL, opt_pds) != 0)
1501                         goto done;
1502                 if (srd_pd_output_callback_add(SRD_OUTPUT_ANN,
1503                                 show_pd_annotations, NULL) != SRD_OK)
1504                         goto done;
1505                 if (setup_pd_stack() != 0)
1506                         goto done;
1507                 if (setup_pd_annotations() != 0)
1508                         goto done;
1509         }
1510
1511         if (setup_output_format() != 0)
1512                 goto done;
1513
1514         if (opt_version)
1515                 show_version();
1516         else if (opt_list_devs)
1517                 show_dev_list();
1518         else if (opt_pds && opt_show)
1519                 show_pd_detail();
1520         else if (opt_show)
1521                 show_dev_detail();
1522         else if (opt_input_file)
1523                 load_input_file();
1524         else if (opt_samples || opt_time || opt_frames || opt_continuous)
1525                 run_session();
1526         else
1527                 printf("%s", g_option_context_get_help(context, TRUE, NULL));
1528
1529         if (opt_pds)
1530                 srd_exit();
1531
1532         ret = 0;
1533
1534 done:
1535         if (sr_ctx)
1536                 sr_exit(sr_ctx);
1537
1538         g_option_context_free(context);
1539
1540         return ret;
1541 }