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 extern struct sr_hwcap_option sr_drvopts[];
  40 extern struct sr_hwcap_option sr_hwcap_options[];
  41
  42 static uint64_t limit_samples = 0;
  43 static uint64_t limit_frames = 0;
  44 static struct sr_output_format *output_format = NULL;
  45 static int default_output_format = FALSE;
  46 static char *output_format_param = NULL;
  47 static GHashTable *pd_ann_visible = 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         struct sr_hwcap_option *ho;
 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                 for (ho = sr_drvopts; ho->shortname; ho++) {
 129                         if (!strcmp(key, ho->shortname)) {
 130                                 hwopt = g_try_malloc(sizeof(struct sr_hwopt));
 131                                 hwopt->hwopt = ho->hwcap;
 132                                 value = g_hash_table_lookup(hash, key);
 133                                 hwopt->value = g_strdup(value);
 134                                 opts = g_slist_append(opts, hwopt);
 135                                 break;
 136                         }
 137                 }
 138                 if (!ho->shortname) {
 139                         g_critical("Unknown option %s", key);
 140                         return NULL;
 141                 }
 142         }
 143         g_list_free(keys);
 144
 145         return opts;
 146 }
 147
 148 static GSList *device_scan(void)
 149 {
 150         struct sr_dev_driver **drivers, *driver;
 151         GHashTable *drvargs;
 152         GSList *drvopts, *devices, *tmpdevs, *l;
 153         int i;
 154         char *drvname;
 155
 156         if (opt_drv) {
 157                 drvargs = parse_generic_arg(opt_drv, TRUE);
 158                 drvname = g_strdup(g_hash_table_lookup(drvargs, "sigrok_key"));
 159                 g_hash_table_remove(drvargs, "sigrok_key");
 160                 driver = NULL;
 161                 drivers = sr_driver_list();
 162                 for (i = 0; drivers[i]; i++) {
 163                         if (strcmp(drivers[i]->name, drvname))
 164                                 continue;
 165                         driver = drivers[i];
 166                 }
 167                 if (!driver) {
 168                         g_critical("Driver %s not found.", drvname);
 169                         return NULL;
 170                 }
 171                 g_free(drvname);
 172                 if (sr_driver_init(driver) != SR_OK) {
 173                         g_critical("Failed to initialize driver.");
 174                         return NULL;
 175                 }
 176                 drvopts = NULL;
 177                 if (g_hash_table_size(drvargs) > 0)
 178                         if (!(drvopts = hash_to_hwopt(drvargs)))
 179                                 /* Unknown options, already logged. */
 180                                 return NULL;
 181                 devices = sr_driver_scan(driver, drvopts);
 182         } else {
 183                 /* No driver specified, let them all scan on their own. */
 184                 devices = NULL;
 185                 drivers = sr_driver_list();
 186                 for (i = 0; drivers[i]; i++) {
 187                         driver = drivers[i];
 188                         if (sr_driver_init(driver) != SR_OK) {
 189                                 g_critical("Failed to initialize driver.");
 190                                 return NULL;
 191                         }
 192                         tmpdevs = sr_driver_scan(driver, NULL);
 193                         for (l = tmpdevs; l; l = l->next)
 194                                 devices = g_slist_append(devices, l->data);
 195                         g_slist_free(tmpdevs);
 196                 }
 197         }
 198
 199         return devices;
 200 }
 201
 202 static void show_version(void)
 203 {
 204         GSList *l;
 205         struct sr_dev_driver **drivers;
 206         struct sr_input_format **inputs;
 207         struct sr_output_format **outputs;
 208         struct srd_decoder *dec;
 209         int i;
 210
 211         printf("sigrok-cli %s\n\n", VERSION);
 212
 213         printf("Using libsigrok %s (lib version %s).\n",
 214                sr_package_version_string_get(), sr_lib_version_string_get());
 215         printf("Using libsigrokdecode %s (lib version %s).\n\n",
 216                srd_package_version_string_get(), srd_lib_version_string_get());
 217
 218         printf("Supported hardware drivers:\n");
 219         drivers = sr_driver_list();
 220         for (i = 0; drivers[i]; i++) {
 221                 printf("  %-20s %s\n", drivers[i]->name, drivers[i]->longname);
 222         }
 223         printf("\n");
 224
 225         printf("Supported input formats:\n");
 226         inputs = sr_input_list();
 227         for (i = 0; inputs[i]; i++)
 228                 printf("  %-20s %s\n", inputs[i]->id, inputs[i]->description);
 229         printf("\n");
 230
 231         printf("Supported output formats:\n");
 232         outputs = sr_output_list();
 233         for (i = 0; outputs[i]; i++)
 234                 printf("  %-20s %s\n", outputs[i]->id, outputs[i]->description);
 235         printf("\n");
 236
 237         if (srd_init(NULL) == SRD_OK) {
 238                 printf("Supported protocol decoders:\n");
 239                 srd_decoder_load_all();
 240                 for (l = srd_decoder_list(); l; l = l->next) {
 241                         dec = l->data;
 242                         printf("  %-20s %s\n", dec->id, dec->longname);
 243                         /* Print protocol description upon "-l 3" or higher. */
 244                         if (opt_loglevel >= SR_LOG_INFO)
 245                                 printf("  %-20s %s\n", "", dec->desc);
 246                 }
 247                 srd_exit();
 248         }
 249         printf("\n");
 250 }
 251
 252 static void print_dev_line(const struct sr_dev_inst *sdi)
 253 {
 254
 255         if (sdi->vendor && sdi->vendor[0])
 256                 printf("%s ", sdi->vendor);
 257         if (sdi->model && sdi->model[0])
 258                 printf("%s ", sdi->model);
 259         if (sdi->version && sdi->version[0])
 260                 printf("%s ", sdi->version);
 261         if (sdi->probes)
 262                 printf("with %d probes", g_slist_length(sdi->probes));
 263         printf("\n");
 264 }
 265
 266 static void show_dev_list(void)
 267 {
 268         struct sr_dev_inst *sdi;
 269         GSList *devices, *l;
 270
 271         if (!(devices = device_scan()))
 272                 return;
 273
 274         printf("The following devices were found:\n");
 275         for (l = devices; l; l = l->next) {
 276                 sdi = l->data;
 277                 print_dev_line(sdi);
 278         }
 279         g_slist_free(devices);
 280
 281 }
 282
 283 static void show_dev_detail(void)
 284 {
 285         struct sr_dev_inst *sdi;
 286         const struct sr_hwcap_option *hwo;
 287         const struct sr_samplerates *samplerates;
 288         struct sr_rational *rationals;
 289         GSList *devices;
 290         uint64_t *integers;
 291         const int *hwopts, *hwcaps;
 292         int cap, num_devices, n, i;
 293         char *s, *title;
 294         const char *charopts, **stropts;
 295
 296         if (!(devices = device_scan())) {
 297                 g_critical("No devices found.");
 298                 return;
 299         }
 300
 301         num_devices = g_slist_length(devices);
 302         if (num_devices > 1) {
 303                 if (!opt_dev) {
 304                         g_critical("%d devices found. Use --list-devices to show them, "
 305                                         "and --device to select one.", num_devices);
 306                         return;
 307                 }
 308                 /* opt_dev is NULL if not specified, which is fine. */
 309                 n = strtol(opt_dev, NULL, 10);
 310                 if (n >= num_devices) {
 311                         g_critical("%d devices found, numbered starting from 0.",
 312                                         num_devices);
 313                         return;
 314                 }
 315                 sdi = g_slist_nth_data(devices, n);
 316         } else
 317                 sdi = g_slist_nth_data(devices, 0);
 318
 319         print_dev_line(sdi);
 320
 321         if (sr_info_get(sdi->driver, SR_DI_TRIGGER_TYPES, (const void **)&charopts,
 322                         sdi) == SR_OK && charopts) {
 323                 printf("Supported triggers: ");
 324                 while (*charopts) {
 325                         printf("%c ", *charopts);
 326                         charopts++;
 327                 }
 328                 printf("\n");
 329         }
 330
 331         if ((sr_info_get(sdi->driver, SR_DI_HWOPTS, (const void **)&hwopts,
 332                         NULL) == SR_OK) && hwopts) {
 333                 printf("Supported driver options:\n");
 334                 for (i = 0; hwopts[i]; i++) {
 335                         if (!(hwo = sr_drvopt_get(hwopts[i])))
 336                                 continue;
 337                         printf("    %s\n", hwo->shortname);
 338                 }
 339         }
 340
 341         title = "Supported device options:\n";
 342         if ((sr_info_get(sdi->driver, SR_DI_HWCAPS, (const void **)&hwcaps,
 343                         NULL) != SR_OK) || !hwcaps)
 344                 /* Driver supports no device instance options. */
 345                 return;
 346
 347         for (cap = 0; hwcaps[cap]; cap++) {
 348                 if (!(hwo = sr_hw_hwcap_get(hwcaps[cap])))
 349                         continue;
 350
 351                 if (title) {
 352                         printf("%s", title);
 353                         title = NULL;
 354                 }
 355
 356                 if (hwo->hwcap == SR_HWCAP_PATTERN_MODE) {
 357                         /* Pattern generator modes */
 358                         printf("    %s", hwo->shortname);
 359                         if (sr_info_get(sdi->driver, SR_DI_PATTERNS,
 360                                         (const void **)&stropts, sdi) == SR_OK) {
 361                                 printf(" - supported patterns:\n");
 362                                 for (i = 0; stropts[i]; i++)
 363                                         printf("      %s\n", stropts[i]);
 364                         } else {
 365                                 printf("\n");
 366                         }
 367
 368                 } else if (hwo->hwcap == SR_HWCAP_SAMPLERATE) {
 369                         /* Supported samplerates */
 370                         printf("    %s", hwo->shortname);
 371                         if (sr_info_get(sdi->driver, SR_DI_SAMPLERATES,
 372                                         (const void **)&samplerates, sdi) != SR_OK) {
 373                                 printf("\n");
 374                                 continue;
 375                         }
 376                         if (samplerates->step) {
 377                                 /* low */
 378                                 if (!(s = sr_samplerate_string(samplerates->low)))
 379                                         continue;
 380                                 printf(" (%s", s);
 381                                 g_free(s);
 382                                 /* high */
 383                                 if (!(s = sr_samplerate_string(samplerates->high)))
 384                                         continue;
 385                                 printf(" - %s", s);
 386                                 g_free(s);
 387                                 /* step */
 388                                 if (!(s = sr_samplerate_string(samplerates->step)))
 389                                         continue;
 390                                 printf(" in steps of %s)\n", s);
 391                                 g_free(s);
 392                         } else {
 393                                 printf(" - supported samplerates:\n");
 394                                 for (i = 0; samplerates->list[i]; i++)
 395                                         printf("      %s\n", sr_samplerate_string(samplerates->list[i]));
 396                         }
 397
 398                 } else if (hwo->hwcap == SR_HWCAP_BUFFERSIZE) {
 399                         /* Supported buffer sizes */
 400                         printf("    %s", hwo->shortname);
 401                         if (sr_info_get(sdi->driver, SR_DI_BUFFERSIZES,
 402                                         (const void **)&integers, sdi) != SR_OK) {
 403                                 printf("\n");
 404                                 continue;
 405                         }
 406                         printf(" - supported buffer sizes:\n");
 407                         for (i = 0; integers[i]; i++)
 408                                 printf("      %"PRIu64"\n", integers[i]);
 409
 410                 } else if (hwo->hwcap == SR_HWCAP_TIMEBASE) {
 411                         /* Supported time bases */
 412                         printf("    %s", hwo->shortname);
 413                         if (sr_info_get(sdi->driver, SR_DI_TIMEBASES,
 414                                         (const void **)&rationals, sdi) != SR_OK) {
 415                                 printf("\n");
 416                                 continue;
 417                         }
 418                         printf(" - supported time bases:\n");
 419                         for (i = 0; rationals[i].p && rationals[i].q; i++)
 420                                 printf("      %s\n", sr_period_string(
 421                                                 rationals[i].p * rationals[i].q));
 422
 423                 } else if (hwo->hwcap == SR_HWCAP_TRIGGER_SOURCE) {
 424                         /* Supported trigger sources */
 425                         printf("    %s", hwo->shortname);
 426                         if (sr_info_get(sdi->driver, SR_DI_TRIGGER_SOURCES,
 427                                         (const void **)&stropts, sdi) != SR_OK) {
 428                                 printf("\n");
 429                                 continue;
 430                         }
 431                         printf(" - supported trigger sources:\n");
 432                         for (i = 0; stropts[i]; i++)
 433                                 printf("      %s\n", stropts[i]);
 434
 435                 } else if (hwo->hwcap == SR_HWCAP_FILTER) {
 436                         /* Supported trigger sources */
 437                         printf("    %s", hwo->shortname);
 438                         if (sr_info_get(sdi->driver, SR_DI_FILTERS,
 439                                         (const void **)&stropts, sdi) != SR_OK) {
 440                                 printf("\n");
 441                                 continue;
 442                         }
 443                         printf(" - supported filter targets:\n");
 444                         for (i = 0; stropts[i]; i++)
 445                                 printf("      %s\n", stropts[i]);
 446
 447                 } else if (hwo->hwcap == SR_HWCAP_VDIV) {
 448                         /* Supported volts/div values */
 449                         printf("    %s", hwo->shortname);
 450                         if (sr_info_get(sdi->driver, SR_DI_VDIVS,
 451                                         (const void **)&rationals, sdi) != SR_OK) {
 452                                 printf("\n");
 453                                 continue;
 454                         }
 455                         printf(" - supported volts/div:\n");
 456                         for (i = 0; rationals[i].p && rationals[i].q; i++)
 457                                 printf("      %s\n", sr_voltage_string( &rationals[i]));
 458
 459                 } else if (hwo->hwcap == SR_HWCAP_COUPLING) {
 460                         /* Supported coupling settings */
 461                         printf("    %s", hwo->shortname);
 462                         if (sr_info_get(sdi->driver, SR_DI_COUPLING,
 463                                         (const void **)&stropts, sdi) != SR_OK) {
 464                                 printf("\n");
 465                                 continue;
 466                         }
 467                         printf(" - supported coupling options:\n");
 468                         for (i = 0; stropts[i]; i++)
 469                                 printf("      %s\n", stropts[i]);
 470
 471                 } else {
 472                         /* Everything else */
 473                         printf("    %s\n", hwo->shortname);
 474                 }
 475         }
 476
 477 }
 478
 479 static void show_pd_detail(void)
 480 {
 481         GSList *l;
 482         struct srd_decoder *dec;
 483         char **pdtokens, **pdtok, **ann, *doc;
 484         struct srd_probe *p;
 485
 486         pdtokens = g_strsplit(opt_pds, ",", -1);
 487         for (pdtok = pdtokens; *pdtok; pdtok++) {
 488                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 489                         printf("Protocol decoder %s not found.\n", *pdtok);
 490                         return;
 491                 }
 492                 printf("ID: %s\nName: %s\nLong name: %s\nDescription: %s\n",
 493                                 dec->id, dec->name, dec->longname, dec->desc);
 494                 printf("License: %s\n", dec->license);
 495                 printf("Annotations:\n");
 496                 if (dec->annotations) {
 497                         for (l = dec->annotations; l; l = l->next) {
 498                                 ann = l->data;
 499                                 printf("- %s\n  %s\n", ann[0], ann[1]);
 500                         }
 501                 } else {
 502                         printf("None.\n");
 503                 }
 504                 /* TODO: Print supported decoder options. */
 505                 printf("Required probes:\n");
 506                 if (dec->probes) {
 507                         for (l = dec->probes; l; l = l->next) {
 508                                 p = l->data;
 509                                 printf("- %s (%s): %s\n",
 510                                        p->name, p->id, p->desc);
 511                         }
 512                 } else {
 513                         printf("None.\n");
 514                 }
 515                 printf("Optional probes:\n");
 516                 if (dec->opt_probes) {
 517                         for (l = dec->opt_probes; l; l = l->next) {
 518                                 p = l->data;
 519                                 printf("- %s (%s): %s\n",
 520                                        p->name, p->id, p->desc);
 521                         }
 522                 } else {
 523                         printf("None.\n");
 524                 }
 525                 if ((doc = srd_decoder_doc_get(dec))) {
 526                         printf("Documentation:\n%s\n",
 527                                doc[0] == '\n' ? doc + 1 : doc);
 528                         g_free(doc);
 529                 }
 530         }
 531
 532         g_strfreev(pdtokens);
 533 }
 534
 535 static void datafeed_in(const struct sr_dev_inst *sdi,
 536                 struct sr_datafeed_packet *packet)
 537 {
 538         static struct sr_output *o = NULL;
 539         static int logic_probelist[SR_MAX_NUM_PROBES] = { 0 };
 540         static struct sr_probe *analog_probelist[SR_MAX_NUM_PROBES];
 541         static uint64_t received_samples = 0;
 542         static int unitsize = 0;
 543         static int triggered = 0;
 544         static FILE *outfile = NULL;
 545         static int num_analog_probes = 0;
 546         struct sr_probe *probe;
 547         struct sr_datafeed_logic *logic;
 548         struct sr_datafeed_meta_logic *meta_logic;
 549         struct sr_datafeed_analog *analog;
 550         struct sr_datafeed_meta_analog *meta_analog;
 551         static int num_enabled_analog_probes = 0;
 552         int num_enabled_probes, sample_size, ret, i;
 553         uint64_t output_len, filter_out_len;
 554         uint8_t *output_buf, *filter_out;
 555
 556         /* If the first packet to come in isn't a header, don't even try. */
 557         if (packet->type != SR_DF_HEADER && o == NULL)
 558                 return;
 559
 560         sample_size = -1;
 561         switch (packet->type) {
 562         case SR_DF_HEADER:
 563                 g_debug("cli: Received SR_DF_HEADER");
 564                 /* Initialize the output module. */
 565                 if (!(o = g_try_malloc(sizeof(struct sr_output)))) {
 566                         g_critical("Output module malloc failed.");
 567                         exit(1);
 568                 }
 569                 o->format = output_format;
 570                 o->sdi = (struct sr_dev_inst *)sdi;
 571                 o->param = output_format_param;
 572                 if (o->format->init) {
 573                         if (o->format->init(o) != SR_OK) {
 574                                 g_critical("Output format initialization failed.");
 575                                 exit(1);
 576                         }
 577                 }
 578                 break;
 579
 580         case SR_DF_END:
 581                 g_debug("cli: Received SR_DF_END");
 582                 if (!o) {
 583                         g_debug("cli: double end!");
 584                         break;
 585                 }
 586                 if (o->format->event) {
 587                         o->format->event(o, SR_DF_END, &output_buf, &output_len);
 588                         if (output_buf) {
 589                                 if (outfile)
 590                                         fwrite(output_buf, 1, output_len, outfile);
 591                                 g_free(output_buf);
 592                                 output_len = 0;
 593                         }
 594                 }
 595                 if (limit_samples && received_samples < limit_samples)
 596                         g_warning("Device only sent %" PRIu64 " samples.",
 597                                received_samples);
 598                 if (opt_continuous)
 599                         g_warning("Device stopped after %" PRIu64 " samples.",
 600                                received_samples);
 601                 sr_session_stop();
 602                 if (outfile && outfile != stdout)
 603                         fclose(outfile);
 604                 g_free(o);
 605                 o = NULL;
 606                 break;
 607
 608         case SR_DF_TRIGGER:
 609                 g_debug("cli: received SR_DF_TRIGGER");
 610                 if (o->format->event)
 611                         o->format->event(o, SR_DF_TRIGGER, &output_buf,
 612                                          &output_len);
 613                 triggered = 1;
 614                 break;
 615
 616         case SR_DF_META_LOGIC:
 617                 g_message("cli: Received SR_DF_META_LOGIC");
 618                 meta_logic = packet->payload;
 619                 num_enabled_probes = 0;
 620                 for (i = 0; i < meta_logic->num_probes; i++) {
 621                         probe = g_slist_nth_data(sdi->probes, i);
 622                         if (probe->enabled)
 623                                 logic_probelist[num_enabled_probes++] = probe->index;
 624                 }
 625                 logic_probelist[num_enabled_probes] = -1;
 626                 /* How many bytes we need to store num_enabled_probes bits */
 627                 unitsize = (num_enabled_probes + 7) / 8;
 628
 629                 outfile = stdout;
 630                 if (opt_output_file) {
 631                         if (default_output_format) {
 632                                 /* output file is in session format, which means we'll
 633                                  * dump everything in the datastore as it comes in,
 634                                  * and save from there after the session. */
 635                                 outfile = NULL;
 636                                 ret = sr_datastore_new(unitsize, &(dev->datastore));
 637                                 if (ret != SR_OK) {
 638                                         printf("Failed to create datastore.\n");
 639                                         exit(1);
 640                                 }
 641                         } else {
 642                                 /* saving to a file in whatever format was set
 643                                  * with --format, so all we need is a filehandle */
 644                                 outfile = g_fopen(opt_output_file, "wb");
 645                         }
 646                 }
 647                 if (opt_pds)
 648                         srd_session_start(num_enabled_probes, unitsize,
 649                                         meta_logic->samplerate);
 650                 break;
 651
 652         case SR_DF_LOGIC:
 653                 logic = packet->payload;
 654                 g_message("cli: received SR_DF_LOGIC, %"PRIu64" bytes", logic->length);
 655                 sample_size = logic->unitsize;
 656                 if (logic->length == 0)
 657                         break;
 658
 659                 /* Don't store any samples until triggered. */
 660                 if (opt_wait_trigger && !triggered)
 661                         break;
 662
 663                 if (limit_samples && received_samples >= limit_samples)
 664                         break;
 665
 666                 ret = sr_filter_probes(sample_size, unitsize, logic_probelist,
 667                                            logic->data, logic->length,
 668                                            &filter_out, &filter_out_len);
 669                 if (ret != SR_OK)
 670                         break;
 671
 672                 /* what comes out of the filter is guaranteed to be packed into the
 673                  * minimum size needed to support the number of samples at this sample
 674                  * size. however, the driver may have submitted too much -- cut off
 675                  * the buffer of the last packet according to the sample limit.
 676                  */
 677                 if (limit_samples && (received_samples + logic->length / sample_size >
 678                                 limit_samples * sample_size))
 679                         filter_out_len = limit_samples * sample_size - received_samples;
 680
 681                 if (dev->datastore)
 682                         sr_datastore_put(dev->datastore, filter_out,
 683                                          filter_out_len, sample_size, logic_probelist);
 684
 685                 if (opt_output_file && default_output_format)
 686                         /* saving to a session file, don't need to do anything else
 687                          * to this data for now. */
 688                         goto cleanup;
 689
 690                 if (opt_pds) {
 691                         if (srd_session_send(received_samples, (uint8_t*)filter_out,
 692                                         filter_out_len) != SRD_OK)
 693                                 sr_session_stop();
 694                 } else {
 695                         output_len = 0;
 696                         if (o->format->data && packet->type == o->format->df_type)
 697                                 o->format->data(o, filter_out, filter_out_len, &output_buf, &output_len);
 698                         if (output_buf) {
 699                                 fwrite(output_buf, 1, output_len, outfile);
 700                                 fflush(outfile);
 701                                 g_free(output_buf);
 702                         }
 703                 }
 704
 705                 cleanup:
 706                 g_free(filter_out);
 707                 received_samples += logic->length / sample_size;
 708                 break;
 709
 710         case SR_DF_META_ANALOG:
 711                 g_message("cli: Received SR_DF_META_ANALOG");
 712                 meta_analog = packet->payload;
 713                 num_analog_probes = meta_analog->num_probes;
 714                 num_enabled_analog_probes = 0;
 715                 for (i = 0; i < num_analog_probes; i++) {
 716                         probe = g_slist_nth_data(sdi->probes, i);
 717                         if (probe->enabled)
 718                                 analog_probelist[num_enabled_analog_probes++] = probe;
 719                 }
 720
 721                 outfile = stdout;
 722                 if (opt_output_file) {
 723                         if (default_output_format) {
 724                                 /* output file is in session format, which means we'll
 725                                  * dump everything in the datastore as it comes in,
 726                                  * and save from there after the session. */
 727                                 outfile = NULL;
 728                                 ret = sr_datastore_new(unitsize, &(dev->datastore));
 729                                 if (ret != SR_OK) {
 730                                         printf("Failed to create datastore.\n");
 731                                         exit(1);
 732                                 }
 733                         } else {
 734                                 /* saving to a file in whatever format was set
 735                                  * with --format, so all we need is a filehandle */
 736                                 outfile = g_fopen(opt_output_file, "wb");
 737                         }
 738                 }
 739                 break;
 740
 741         case SR_DF_ANALOG:
 742                 analog = packet->payload;
 743                 g_message("cli: received SR_DF_ANALOG, %d samples", analog->num_samples);
 744                 if (analog->num_samples == 0)
 745                         break;
 746
 747                 if (limit_samples && received_samples >= limit_samples)
 748                         break;
 749
 750                 if (o->format->data && packet->type == o->format->df_type) {
 751                         o->format->data(o, (const uint8_t *)analog->data,
 752                                         analog->num_samples * sizeof(float),
 753                                         &output_buf, &output_len);
 754                         if (output_buf) {
 755                                 fwrite(output_buf, 1, output_len, outfile);
 756                                 fflush(outfile);
 757                                 g_free(output_buf);
 758                         }
 759                 }
 760
 761                 received_samples += analog->num_samples;
 762                 break;
 763
 764         case SR_DF_FRAME_BEGIN:
 765                 g_debug("cli: received SR_DF_FRAME_BEGIN");
 766                 if (o->format->event) {
 767                         o->format->event(o, SR_DF_FRAME_BEGIN, &output_buf,
 768                                          &output_len);
 769                         if (output_buf) {
 770                                 fwrite(output_buf, 1, output_len, outfile);
 771                                 fflush(outfile);
 772                                 g_free(output_buf);
 773                         }
 774                 }
 775                 break;
 776
 777         case SR_DF_FRAME_END:
 778                 g_debug("cli: received SR_DF_FRAME_END");
 779                 if (o->format->event) {
 780                         o->format->event(o, SR_DF_FRAME_END, &output_buf,
 781                                          &output_len);
 782                         if (output_buf) {
 783                                 fwrite(output_buf, 1, output_len, outfile);
 784                                 fflush(outfile);
 785                                 g_free(output_buf);
 786                         }
 787                 }
 788                 break;
 789
 790         default:
 791                 g_message("received unknown packet type %d", packet->type);
 792         }
 793
 794 }
 795
 796 /* Register the given PDs for this session.
 797  * Accepts a string of the form: "spi:sck=3:sdata=4,spi:sck=3:sdata=5"
 798  * That will instantiate two SPI decoders on the clock but different data
 799  * lines.
 800  */
 801 static int register_pds(struct sr_dev *dev, const char *pdstring)
 802 {
 803         GHashTable *pd_opthash;
 804         struct srd_decoder_inst *di;
 805         int ret;
 806         char **pdtokens, **pdtok, *pd_name;
 807
 808         /* Avoid compiler warnings. */
 809         (void)dev;
 810
 811         ret = 0;
 812         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 813                         g_free, NULL);
 814         pd_name = NULL;
 815         pd_opthash = NULL;
 816         pdtokens = g_strsplit(pdstring, ",", 0);
 817         for (pdtok = pdtokens; *pdtok; pdtok++) {
 818                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
 819                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 820                         goto err_out;
 821                 }
 822
 823                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 824                 g_hash_table_remove(pd_opthash, "sigrok_key");
 825                 if (srd_decoder_load(pd_name) != SRD_OK) {
 826                         g_critical("Failed to load protocol decoder %s.", pd_name);
 827                         ret = 1;
 828                         goto err_out;
 829                 }
 830                 if (!(di = srd_inst_new(pd_name, pd_opthash))) {
 831                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 832                         ret = 1;
 833                         goto err_out;
 834                 }
 835
 836                 /* If no annotation list was specified, add them all in now.
 837                  * This will be pared down later to leave only the last PD
 838                  * in the stack.
 839                  */
 840                 if (!opt_pd_annotations)
 841                         g_hash_table_insert(pd_ann_visible,
 842                                             g_strdup(di->inst_id), NULL);
 843
 844                 /* Any keys left in the options hash are probes, where the key
 845                  * is the probe name as specified in the decoder class, and the
 846                  * value is the probe number i.e. the order in which the PD's
 847                  * incoming samples are arranged. */
 848                 if (srd_inst_probe_set_all(di, pd_opthash) != SRD_OK) {
 849                         ret = 1;
 850                         goto err_out;
 851                 }
 852                 g_hash_table_destroy(pd_opthash);
 853                 pd_opthash = NULL;
 854         }
 855
 856 err_out:
 857         g_strfreev(pdtokens);
 858         if (pd_opthash)
 859                 g_hash_table_destroy(pd_opthash);
 860         if (pd_name)
 861                 g_free(pd_name);
 862
 863         return ret;
 864 }
 865
 866 int setup_pd_stack(void)
 867 {
 868         struct srd_decoder_inst *di_from, *di_to;
 869         int ret, i;
 870         char **pds, **ids;
 871
 872         /* Set up the protocol decoder stack. */
 873         pds = g_strsplit(opt_pds, ",", 0);
 874         if (g_strv_length(pds) > 1) {
 875                 if (opt_pd_stack) {
 876                         /* A stack setup was specified, use that. */
 877                         g_strfreev(pds);
 878                         pds = g_strsplit(opt_pd_stack, ",", 0);
 879                         if (g_strv_length(pds) < 2) {
 880                                 g_strfreev(pds);
 881                                 g_critical("Specify at least two protocol decoders to stack.");
 882                                 return 1;
 883                         }
 884                 }
 885
 886                 /* First PD goes at the bottom of the stack. */
 887                 ids = g_strsplit(pds[0], ":", 0);
 888                 if (!(di_from = srd_inst_find_by_id(ids[0]))) {
 889                         g_strfreev(ids);
 890                         g_critical("Cannot stack protocol decoder '%s': "
 891                                         "instance not found.", pds[0]);
 892                         return 1;
 893                 }
 894                 g_strfreev(ids);
 895
 896                 /* Every subsequent PD goes on top. */
 897                 for (i = 1; pds[i]; i++) {
 898                         ids = g_strsplit(pds[i], ":", 0);
 899                         if (!(di_to = srd_inst_find_by_id(ids[0]))) {
 900                                 g_strfreev(ids);
 901                                 g_critical("Cannot stack protocol decoder '%s': "
 902                                                 "instance not found.", pds[i]);
 903                                 return 1;
 904                         }
 905                         g_strfreev(ids);
 906                         if ((ret = srd_inst_stack(di_from, di_to)) != SRD_OK)
 907                                 return 1;
 908
 909                         /* Don't show annotation from this PD. Only the last PD in
 910                          * the stack will be left on the annotation list (unless
 911                          * the annotation list was specifically provided).
 912                          */
 913                         if (!opt_pd_annotations)
 914                                 g_hash_table_remove(pd_ann_visible,
 915                                                     di_from->inst_id);
 916
 917                         di_from = di_to;
 918                 }
 919         }
 920         g_strfreev(pds);
 921
 922         return 0;
 923 }
 924
 925 int setup_pd_annotations(void)
 926 {
 927         GSList *l;
 928         struct srd_decoder *dec;
 929         int ann;
 930         char **pds, **pdtok, **keyval, **ann_descr;
 931
 932         /* Set up custom list of PDs and annotations to show. */
 933         if (opt_pd_annotations) {
 934                 pds = g_strsplit(opt_pd_annotations, ",", 0);
 935                 for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 936                         ann = 0;
 937                         keyval = g_strsplit(*pdtok, "=", 0);
 938                         if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 939                                 g_critical("Protocol decoder '%s' not found.", keyval[0]);
 940                                 return 1;
 941                         }
 942                         if (!dec->annotations) {
 943                                 g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
 944                                 return 1;
 945                         }
 946                         if (g_strv_length(keyval) == 2) {
 947                                 for (l = dec->annotations; l; l = l->next, ann++) {
 948                                         ann_descr = l->data;
 949                                         if (!canon_cmp(ann_descr[0], keyval[1]))
 950                                                 /* Found it. */
 951                                                 break;
 952                                 }
 953                                 if (!l) {
 954                                         g_critical("Annotation '%s' not found "
 955                                                         "for protocol decoder '%s'.", keyval[1], keyval[0]);
 956                                         return 1;
 957                                 }
 958                         }
 959                         g_debug("cli: showing protocol decoder annotation %d from '%s'", ann, keyval[0]);
 960                         g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]), GINT_TO_POINTER(ann));
 961                         g_strfreev(keyval);
 962                 }
 963                 g_strfreev(pds);
 964         }
 965
 966         return 0;
 967 }
 968
 969 int setup_output_format(void)
 970 {
 971         GHashTable *fmtargs;
 972         GHashTableIter iter;
 973         gpointer key, value;
 974         struct sr_output_format **outputs;
 975         int i;
 976         char *fmtspec;
 977
 978         if (!opt_output_format) {
 979                 opt_output_format = DEFAULT_OUTPUT_FORMAT;
 980                 /* we'll need to remember this so when saving to a file
 981                  * later, sigrok session format will be used.
 982                  */
 983                 default_output_format = TRUE;
 984         }
 985
 986         fmtargs = parse_generic_arg(opt_output_format, TRUE);
 987         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 988         if (!fmtspec) {
 989                 g_critical("Invalid output format.");
 990                 return 1;
 991         }
 992         outputs = sr_output_list();
 993         for (i = 0; outputs[i]; i++) {
 994                 if (strcmp(outputs[i]->id, fmtspec))
 995                         continue;
 996                 g_hash_table_remove(fmtargs, "sigrok_key");
 997                 output_format = outputs[i];
 998                 g_hash_table_iter_init(&iter, fmtargs);
 999                 while (g_hash_table_iter_next(&iter, &key, &value)) {
1000                         /* only supporting one parameter per output module
1001                          * for now, and only its value */
1002                         output_format_param = g_strdup(value);
1003                         break;
1004                 }
1005                 break;
1006         }
1007         if (!output_format) {
1008                 g_critical("Invalid output format %s.", opt_output_format);
1009                 return 1;
1010         }
1011         g_hash_table_destroy(fmtargs);
1012
1013         return 0;
1014 }
1015
1016 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
1017 {
1018         int i;
1019         char **annotations;
1020         gpointer ann_format;
1021
1022         /* 'cb_data' is not used in this specific callback. */
1023         (void)cb_data;
1024
1025         if (!pd_ann_visible)
1026                 return;
1027
1028         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
1029                         NULL, &ann_format))
1030                 /* Not in the list of PDs whose annotations we're showing. */
1031                 return;
1032
1033         if (pdata->ann_format != GPOINTER_TO_INT(ann_format))
1034                 /* We don't want this particular format from the PD. */
1035                 return;
1036
1037         annotations = pdata->data;
1038         if (opt_loglevel > SR_LOG_WARN)
1039                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
1040         printf("%s: ", pdata->pdo->proto_id);
1041         for (i = 0; annotations[i]; i++)
1042                 printf("\"%s\" ", annotations[i]);
1043         printf("\n");
1044         fflush(stdout);
1045 }
1046
1047 static int select_probes(struct sr_dev_inst *sdi)
1048 {
1049         char **probelist;
1050         int max_probes, i;
1051
1052         if (!opt_probes)
1053                 return SR_OK;
1054
1055         /*
1056          * This only works because a device by default initializes
1057          * and enables all its probes.
1058          */
1059         max_probes = g_slist_length(sdi->probes);
1060         probelist = parse_probestring(max_probes, opt_probes);
1061         if (!probelist) {
1062                 return SR_ERR;
1063         }
1064
1065         for (i = 0; i < max_probes; i++) {
1066                 if (probelist[i]) {
1067                         sr_dev_probe_name_set(sdi, i, probelist[i]);
1068                         g_free(probelist[i]);
1069                 } else {
1070                         sr_dev_probe_enable(sdi, i, FALSE);
1071                 }
1072         }
1073         g_free(probelist);
1074
1075         return SR_OK;
1076 }
1077
1078 /**
1079  * Return the input file format which the CLI tool should use.
1080  *
1081  * If the user specified -I / --input-format, use that one. Otherwise, try to
1082  * autodetect the format as good as possible. Failing that, return NULL.
1083  *
1084  * @param filename The filename of the input file. Must not be NULL.
1085  * @param opt The -I / --input-file option the user specified (or NULL).
1086  *
1087  * @return A pointer to the 'struct sr_input_format' that should be used,
1088  *         or NULL if no input format was selected or auto-detected.
1089  */
1090 static struct sr_input_format *determine_input_file_format(
1091                         const char *filename, const char *opt)
1092 {
1093         int i;
1094         struct sr_input_format **inputs;
1095
1096         /* If there are no input formats, return NULL right away. */
1097         inputs = sr_input_list();
1098         if (!inputs) {
1099                 g_critical("No supported input formats available.");
1100                 return NULL;
1101         }
1102
1103         /* If the user specified -I / --input-format, use that one. */
1104         if (opt) {
1105                 for (i = 0; inputs[i]; i++) {
1106                         if (strcasecmp(inputs[i]->id, opt))
1107                                 continue;
1108                         g_debug("Using user-specified input file format '%s'.",
1109                                         inputs[i]->id);
1110                         return inputs[i];
1111                 }
1112
1113                 /* The user specified an unknown input format, return NULL. */
1114                 g_critical("Error: specified input file format '%s' is "
1115                         "unknown.", opt);
1116                 return NULL;
1117         }
1118
1119         /* Otherwise, try to find an input module that can handle this file. */
1120         for (i = 0; inputs[i]; i++) {
1121                 if (inputs[i]->format_match(filename))
1122                         break;
1123         }
1124
1125         /* Return NULL if no input module wanted to touch this. */
1126         if (!inputs[i]) {
1127                 g_critical("Error: no matching input module found.");
1128                 return NULL;
1129         }
1130
1131         g_debug("cli: Autodetected '%s' input format for file '%s'.",
1132                 inputs[i]->id, filename);
1133
1134         return inputs[i];
1135 }
1136
1137 static void load_input_file_format(void)
1138 {
1139         GHashTable *fmtargs = NULL;
1140         struct stat st;
1141         struct sr_input *in;
1142         struct sr_input_format *input_format;
1143         char *fmtspec = NULL;
1144
1145         if (opt_input_format) {
1146                 fmtargs = parse_generic_arg(opt_input_format);
1147                 fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
1148         }
1149
1150         if (!(input_format = determine_input_file_format(opt_input_file,
1151                                                    fmtspec))) {
1152                 /* The exact cause was already logged. */
1153                 return;
1154         }
1155 ;
1156         if (fmtargs)
1157                 g_hash_table_remove(fmtargs, "sigrok_key");
1158
1159         if (stat(opt_input_file, &st) == -1) {
1160                 g_critical("Failed to load %s: %s", opt_input_file,
1161                         strerror(errno));
1162                 exit(1);
1163         }
1164
1165         /* Initialize the input module. */
1166         if (!(in = g_try_malloc(sizeof(struct sr_input)))) {
1167                 g_critical("Failed to allocate input module.");
1168                 exit(1);
1169         }
1170         in->format = input_format;
1171         in->param = fmtargs;
1172         if (in->format->init) {
1173                 if (in->format->init(in) != SR_OK) {
1174                         g_critical("Input format init failed.");
1175                         exit(1);
1176                 }
1177         }
1178
1179         if (select_probes(in->sdi) > 0)
1180             return;
1181
1182         sr_session_new();
1183         sr_session_datafeed_callback_add(datafeed_in);
1184         if (sr_session_dev_add(in->sdi) != SR_OK) {
1185                 g_critical("Failed to use device.");
1186                 sr_session_destroy();
1187                 return;
1188         }
1189
1190         input_format->loadfile(in, opt_input_file);
1191         if (opt_output_file && default_output_format) {
1192                 if (sr_session_save(opt_output_file) != SR_OK)
1193                         g_critical("Failed to save session.");
1194         }
1195         sr_session_destroy();
1196
1197         if (fmtargs)
1198                 g_hash_table_destroy(fmtargs);
1199 }
1200
1201 static void load_input_file(void)
1202 {
1203
1204         if (sr_session_load(opt_input_file) == SR_OK) {
1205                 /* sigrok session file */
1206                 sr_session_datafeed_callback_add(datafeed_in);
1207                 sr_session_start();
1208                 sr_session_run();
1209                 sr_session_stop();
1210         }
1211         else {
1212                 /* fall back on input modules */
1213                 load_input_file_format();
1214         }
1215 }
1216
1217 static int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
1218 {
1219         GHashTableIter iter;
1220         gpointer key, value;
1221         int ret, i;
1222         float tmp_float;
1223         uint64_t tmp_u64;
1224         struct sr_rational tmp_rat;
1225         gboolean tmp_bool;
1226         gboolean found;
1227         void *val;
1228
1229         g_hash_table_iter_init(&iter, args);
1230         while (g_hash_table_iter_next(&iter, &key, &value)) {
1231                 found = FALSE;
1232                 for (i = 0; sr_hwcap_options[i].hwcap; i++) {
1233                         if (strcmp(sr_hwcap_options[i].shortname, key))
1234                                 continue;
1235                         if ((value == NULL) &&
1236                             (sr_hwcap_options[i].type != SR_T_BOOL)) {
1237                                 g_critical("Option '%s' needs a value.", (char *)key);
1238                                 return SR_ERR;
1239                         }
1240                         found = TRUE;
1241                         val = NULL;
1242                         switch (sr_hwcap_options[i].type) {
1243                         case SR_T_UINT64:
1244                                 ret = sr_parse_sizestring(value, &tmp_u64);
1245                                 if (ret != SR_OK)
1246                                         break;
1247                                 val = &tmp_u64;
1248                                 break;
1249                         case SR_T_CHAR:
1250                                 val = value;
1251                                 break;
1252                         case SR_T_BOOL:
1253                                 if (!value)
1254                                         tmp_bool = TRUE;
1255                                 else
1256                                         tmp_bool = sr_parse_boolstring(value);
1257                                 val = &tmp_bool;
1258                                 break;
1259                         case SR_T_FLOAT:
1260                                 tmp_float = strtof(value, NULL);
1261                                 val = &tmp_float;
1262                                 break;
1263                         case SR_T_RATIONAL_PERIOD:
1264                                 if ((ret = sr_parse_period(value, &tmp_rat)) != SR_OK)
1265                                         break;
1266                                 val = &tmp_rat;
1267                                 break;
1268                         case SR_T_RATIONAL_VOLT:
1269                                 if ((ret = sr_parse_voltage(value, &tmp_rat)) != SR_OK)
1270                                         break;
1271                                 val = &tmp_rat;
1272                                 break;
1273                         default:
1274                                 ret = SR_ERR;
1275                         }
1276                         if (val)
1277                                 ret = sdi->driver->dev_config_set(sdi,
1278                                                 sr_hwcap_options[i].hwcap, val);
1279                         if (ret != SR_OK) {
1280                                 g_critical("Failed to set device option '%s'.", (char *)key);
1281                                 return ret;
1282                         }
1283                         else
1284                                 break;
1285                 }
1286                 if (!found) {
1287                         g_critical("Unknown device option '%s'.", (char *) key);
1288                         return SR_ERR;
1289                 }
1290         }
1291
1292         return SR_OK;
1293 }
1294
1295 static int set_limit_time(const struct sr_dev_inst *sdi)
1296 {
1297         uint64_t time_msec;
1298         uint64_t *samplerate;
1299
1300         time_msec = sr_parse_timestring(opt_time);
1301         if (time_msec == 0) {
1302                 g_critical("Invalid time '%s'", opt_time);
1303                 sr_session_destroy();
1304                 return SR_ERR;
1305         }
1306
1307         if (sr_driver_hwcap_exists(sdi->driver, SR_HWCAP_LIMIT_MSEC)) {
1308                 if (sdi->driver->dev_config_set(sdi,
1309                         SR_HWCAP_LIMIT_MSEC, &time_msec) != SR_OK) {
1310                         g_critical("Failed to configure time limit.");
1311                         sr_session_destroy();
1312                         return SR_ERR;
1313                 }
1314         }
1315         else {
1316                 /* time limit set, but device doesn't support this...
1317                  * convert to samples based on the samplerate.
1318                  */
1319                 limit_samples = 0;
1320                 if (sr_dev_has_hwcap(sdi, SR_HWCAP_SAMPLERATE)) {
1321                         sr_info_get(sdi->driver, SR_DI_CUR_SAMPLERATE,
1322                                         (const void **)&samplerate, sdi);
1323                         limit_samples = (*samplerate) * time_msec / (uint64_t)1000;
1324                 }
1325                 if (limit_samples == 0) {
1326                         g_critical("Not enough time at this samplerate.");
1327                         sr_session_destroy();
1328                         return SR_ERR;
1329                 }
1330
1331                 if (sdi->driver->dev_config_set(sdi,
1332                         SR_HWCAP_LIMIT_SAMPLES, &limit_samples) != SR_OK) {
1333                         g_critical("Failed to configure time-based sample limit.");
1334                         sr_session_destroy();
1335                         return SR_ERR;
1336                 }
1337         }
1338
1339         return SR_OK;
1340 }
1341
1342 static void run_session(void)
1343 {
1344         GSList *devices, *l;
1345         GHashTable *devargs;
1346         struct sr_dev_inst *sdi;
1347         int max_probes, i;
1348         char **probelist;
1349
1350         sr_session_new();
1351         sr_session_datafeed_callback_add(datafeed_in);
1352
1353         devices = device_scan();
1354         for (l = devices; l; l = l->next) {
1355                 sdi = l->data;
1356                 printf("found %s %s\n", sdi->vendor, sdi->model);
1357
1358                 devargs = NULL;
1359                 if (opt_dev) {
1360                         /* TODO: this applies the same options to every device */
1361                         devargs = parse_generic_arg(opt_dev, FALSE);
1362                         if (devargs) {
1363                                 if (set_dev_options(sdi, devargs) != SR_OK) {
1364                                         return;
1365                                 }
1366                                 g_hash_table_destroy(devargs);
1367                         }
1368                 }
1369
1370                 if (sr_session_dev_add(sdi) != SR_OK) {
1371                         g_critical("Failed to use device.");
1372                         sr_session_destroy();
1373                         return;
1374                 }
1375
1376                 if (select_probes(sdi) != SR_OK)
1377                         return;
1378
1379                 if (opt_continuous) {
1380                         if (!sr_driver_hwcap_exists(sdi->driver, SR_HWCAP_CONTINUOUS)) {
1381                                 g_critical("This device does not support continuous sampling.");
1382                                 sr_session_destroy();
1383                                 return;
1384                         }
1385                 }
1386
1387                 if (opt_triggers) {
1388                         probelist = sr_parse_triggerstring(sdi, opt_triggers);
1389                         if (!probelist) {
1390                                 sr_session_destroy();
1391                                 return;
1392                         }
1393
1394                         max_probes = g_slist_length(sdi->probes);
1395                         for (i = 0; i < max_probes; i++) {
1396                                 if (probelist[i]) {
1397                                         sr_dev_trigger_set(sdi, i, probelist[i]);
1398                                         g_free(probelist[i]);
1399                                 }
1400                         }
1401                         g_free(probelist);
1402                 }
1403
1404                 if (sdi->driver->dev_config_set(sdi, SR_HWCAP_PROBECONFIG,
1405                                 (char *)sdi->probes) != SR_OK) {
1406                         g_critical("Failed to configure probes.");
1407                         sr_session_destroy();
1408                         return;
1409                 }
1410
1411         }
1412
1413         if (opt_time) {
1414                 if (set_limit_time(sdi) != SR_OK) {
1415                         sr_session_destroy();
1416                         return;
1417                 }
1418         }
1419
1420         if (opt_samples) {
1421                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)
1422                                 || (sdi->driver->dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
1423                                                 &limit_samples) != SR_OK)) {
1424                         g_critical("Failed to configure sample limit.");
1425                         sr_session_destroy();
1426                         return;
1427                 }
1428         }
1429
1430         if (opt_frames) {
1431                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)
1432                                 || (sdi->driver->dev_config_set(sdi,
1433                             SR_HWCAP_LIMIT_FRAMES, &limit_frames) != SR_OK)) {
1434                         printf("Failed to configure frame limit.\n");
1435                         sr_session_destroy();
1436                         return;
1437                 }
1438         }
1439
1440         if (sr_session_start() != SR_OK) {
1441                 g_critical("Failed to start session.");
1442                 sr_session_destroy();
1443                 return;
1444         }
1445
1446         if (opt_continuous)
1447                 add_anykey();
1448
1449         sr_session_run();
1450
1451         if (opt_continuous)
1452                 clear_anykey();
1453
1454         if (opt_output_file && default_output_format) {
1455                 if (sr_session_save(opt_output_file) != SR_OK)
1456                         g_critical("Failed to save session.");
1457         }
1458         sr_session_destroy();
1459         g_slist_free(devices);
1460
1461 }
1462
1463 static void logger(const gchar *log_domain, GLogLevelFlags log_level,
1464                    const gchar *message, gpointer cb_data)
1465 {
1466         /* Avoid compiler warnings. */
1467         (void)log_domain;
1468         (void)cb_data;
1469
1470         /*
1471          * All messages, warnings, errors etc. go to stderr (not stdout) in
1472          * order to not mess up the CLI tool data output, e.g. VCD output.
1473          */
1474         if (log_level & (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)
1475                         || opt_loglevel > SR_LOG_WARN) {
1476                 fprintf(stderr, "%s\n", message);
1477                 fflush(stderr);
1478         }
1479 }
1480
1481 int main(int argc, char **argv)
1482 {
1483         GOptionContext *context;
1484         GError *error;
1485
1486         g_log_set_default_handler(logger, NULL);
1487
1488         error = NULL;
1489         context = g_option_context_new(NULL);
1490         g_option_context_add_main_entries(context, optargs, NULL);
1491
1492         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1493                 g_critical("%s", error->message);
1494                 return 1;
1495         }
1496
1497         /* Set the loglevel (amount of messages to output) for libsigrok. */
1498         if (sr_log_loglevel_set(opt_loglevel) != SR_OK)
1499                 return 1;
1500
1501         /* Set the loglevel (amount of messages to output) for libsigrokdecode. */
1502         if (srd_log_loglevel_set(opt_loglevel) != SRD_OK)
1503                 return 1;
1504
1505         if (sr_init() != SR_OK)
1506                 return 1;
1507
1508         if (opt_pds) {
1509                 if (srd_init(NULL) != SRD_OK)
1510                         return 1;
1511                 if (register_pds(NULL, opt_pds) != 0)
1512                         return 1;
1513                 if (srd_pd_output_callback_add(SRD_OUTPUT_ANN,
1514                                 show_pd_annotations, NULL) != SRD_OK)
1515                         return 1;
1516                 if (setup_pd_stack() != 0)
1517                         return 1;
1518                 if (setup_pd_annotations() != 0)
1519                         return 1;
1520         }
1521
1522         if (setup_output_format() != 0)
1523                 return 1;
1524
1525         if (opt_version)
1526                 show_version();
1527         else if (opt_list_devs)
1528                 show_dev_list();
1529         else if (opt_show)
1530                 show_dev_detail();
1531         else if (opt_pds)
1532                 show_pd_detail();
1533         else if (opt_input_file)
1534                 load_input_file();
1535         else if (opt_samples || opt_time || opt_frames || opt_continuous)
1536                 run_session();
1537         else
1538                 printf("%s", g_option_context_get_help(context, TRUE, NULL));
1539
1540         if (opt_pds)
1541                 srd_exit();
1542
1543         g_option_context_free(context);
1544         sr_exit();
1545
1546         return 0;
1547 }