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 <sigrok.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_hwcap_options[];
  40
  41 static uint64_t limit_samples = 0;
  42 static struct sr_output_format *output_format = NULL;
  43 static int default_output_format = FALSE;
  44 static char *output_format_param = NULL;
  45 static char *input_format_param = NULL;
  46 static GHashTable *pd_ann_visible = NULL;
  47
  48 static gboolean opt_version = FALSE;
  49 static gint opt_loglevel = SR_LOG_WARN; /* Show errors+warnings per default. */
  50 static gboolean opt_list_devs = FALSE;
  51 static gboolean opt_wait_trigger = FALSE;
  52 static gchar *opt_input_file = NULL;
  53 static gchar *opt_output_file = NULL;
  54 static gchar *opt_dev = NULL;
  55 static gchar *opt_probes = NULL;
  56 static gchar *opt_triggers = NULL;
  57 static gchar *opt_pds = NULL;
  58 static gchar *opt_pd_stack = NULL;
  59 static gchar *opt_pd_annotations = NULL;
  60 static gchar *opt_input_format = NULL;
  61 static gchar *opt_output_format = NULL;
  62 static gchar *opt_time = NULL;
  63 static gchar *opt_samples = NULL;
  64 static gchar *opt_continuous = NULL;
  65
  66 static GOptionEntry optargs[] = {
  67         {"version", 'V', 0, G_OPTION_ARG_NONE, &opt_version,
  68                         "Show version and support list", NULL},
  69         {"loglevel", 'l', 0, G_OPTION_ARG_INT, &opt_loglevel,
  70                         "Select libsigrok/libsigrokdecode loglevel", NULL},
  71         {"list-devices", 'D', 0, G_OPTION_ARG_NONE, &opt_list_devs,
  72                         "Scan for devices", NULL},
  73         {"device", 'd', 0, G_OPTION_ARG_STRING, &opt_dev,
  74                         "Use specified device", NULL},
  75         {"input-file", 'i', 0, G_OPTION_ARG_FILENAME, &opt_input_file,
  76                         "Load input from file", NULL},
  77         {"input-format", 'I', 0, G_OPTION_ARG_STRING, &opt_input_format,
  78                         "Input format", NULL},
  79         {"output-file", 'o', 0, G_OPTION_ARG_FILENAME, &opt_output_file,
  80                         "Save output to file", NULL},
  81         {"output-format", 'O', 0, G_OPTION_ARG_STRING, &opt_output_format,
  82                         "Output format", NULL},
  83         {"probes", 'p', 0, G_OPTION_ARG_STRING, &opt_probes,
  84                         "Probes to use", NULL},
  85         {"triggers", 't', 0, G_OPTION_ARG_STRING, &opt_triggers,
  86                         "Trigger configuration", NULL},
  87         {"wait-trigger", 'w', 0, G_OPTION_ARG_NONE, &opt_wait_trigger,
  88                         "Wait for trigger", NULL},
  89         {"protocol-decoders", 'a', 0, G_OPTION_ARG_STRING, &opt_pds,
  90                         "Protocol decoders to run", NULL},
  91         {"protocol-decoder-stack", 's', 0, G_OPTION_ARG_STRING, &opt_pd_stack,
  92                         "Protocol decoder stack", NULL},
  93         {"protocol-decoder-annotations", 'A', 0, G_OPTION_ARG_STRING, &opt_pd_annotations,
  94                         "Protocol decoder annotation(s) to show", NULL},
  95         {"time", 0, 0, G_OPTION_ARG_STRING, &opt_time,
  96                         "How long to sample (ms)", NULL},
  97         {"samples", 0, 0, G_OPTION_ARG_STRING, &opt_samples,
  98                         "Number of samples to acquire", NULL},
  99         {"continuous", 0, 0, G_OPTION_ARG_NONE, &opt_continuous,
 100                         "Sample continuously", NULL},
 101         {NULL, 0, 0, 0, NULL, NULL, NULL}
 102 };
 103
 104 static void show_version(void)
 105 {
 106         GSList *l;
 107         struct sr_dev_driver **drivers;
 108         struct sr_input_format **inputs;
 109         struct sr_output_format **outputs;
 110         struct srd_decoder *dec;
 111         int i;
 112
 113         printf("sigrok-cli %s\n\n", VERSION);
 114
 115         printf("Using libsigrok %s (lib version %s).\n",
 116                sr_package_version_string_get(), sr_lib_version_string_get());
 117         printf("Using libsigrokdecode %s (lib version %s).\n\n",
 118                srd_package_version_string_get(), srd_lib_version_string_get());
 119
 120         printf("Supported hardware drivers:\n");
 121         drivers = sr_driver_list();
 122         for (i = 0; drivers[i]; i++) {
 123                 printf("  %-20s %s\n", drivers[i]->name, drivers[i]->longname);
 124         }
 125         printf("\n");
 126
 127         printf("Supported input formats:\n");
 128         inputs = sr_input_list();
 129         for (i = 0; inputs[i]; i++)
 130                 printf("  %-20s %s\n", inputs[i]->id, inputs[i]->description);
 131         printf("\n");
 132
 133         printf("Supported output formats:\n");
 134         outputs = sr_output_list();
 135         for (i = 0; outputs[i]; i++)
 136                 printf("  %-20s %s\n", outputs[i]->id, outputs[i]->description);
 137         printf("\n");
 138
 139         if (srd_init(NULL) == SRD_OK) {
 140                 printf("Supported protocol decoders:\n");
 141                 srd_decoder_load_all();
 142                 for (l = srd_decoder_list(); l; l = l->next) {
 143                         dec = l->data;
 144                         printf("  %-20s %s\n", dec->id, dec->longname);
 145                         /* Print protocol description upon "-l 3" or higher. */
 146                         if (opt_loglevel >= SR_LOG_INFO)
 147                                 printf("  %-20s %s\n", "", dec->desc);
 148                 }
 149                 srd_exit();
 150         }
 151         printf("\n");
 152 }
 153
 154 static void print_dev_line(const struct sr_dev *dev)
 155 {
 156         const struct sr_dev_inst *sdi;
 157
 158         sr_dev_info_get(dev, SR_DI_INST, (const void **)&sdi);
 159
 160         if (sdi->vendor && sdi->vendor[0])
 161                 printf("%s ", sdi->vendor);
 162         if (sdi->model && sdi->model[0])
 163                 printf("%s ", sdi->model);
 164         if (sdi->version && sdi->version[0])
 165                 printf("%s ", sdi->version);
 166         if (dev->probes)
 167                 printf("with %d probes", g_slist_length(dev->probes));
 168         printf("\n");
 169 }
 170
 171 static void show_dev_list(void)
 172 {
 173         struct sr_dev *dev, *demo_dev;
 174         GSList *devs, *l;
 175         int devcnt;
 176
 177         devcnt = 0;
 178         devs = sr_dev_list();
 179
 180         if (g_slist_length(devs) == 0)
 181                 return;
 182
 183         printf("The following devices were found:\nID    Device\n");
 184         demo_dev = NULL;
 185         for (l = devs; l; l = l->next) {
 186                 dev = l->data;
 187                 if (sr_dev_has_hwcap(dev, SR_HWCAP_DEMO_DEV)) {
 188                         demo_dev = dev;
 189                         continue;
 190                 }
 191                 printf("%-3d   ", devcnt++);
 192                 print_dev_line(dev);
 193         }
 194         if (demo_dev) {
 195                 printf("demo  ");
 196                 print_dev_line(demo_dev);
 197         }
 198 }
 199
 200 static void show_dev_detail(void)
 201 {
 202         struct sr_dev *dev;
 203         struct sr_hwcap_option *hwo;
 204         const struct sr_samplerates *samplerates;
 205         int cap, *hwcaps, i;
 206         char *s, *title;
 207         const char *charopts, **stropts;
 208
 209         dev = parse_devstring(opt_dev);
 210         if (!dev) {
 211                 printf("No such device. Use -D to list all devices.\n");
 212                 return;
 213         }
 214
 215         print_dev_line(dev);
 216
 217         if (sr_dev_info_get(dev, SR_DI_TRIGGER_TYPES,
 218                                         (const void **)&charopts) == SR_OK) {
 219                 printf("Supported triggers: ");
 220                 while (*charopts) {
 221                         printf("%c ", *charopts);
 222                         charopts++;
 223                 }
 224                 printf("\n");
 225         }
 226
 227         title = "Supported options:\n";
 228         hwcaps = dev->driver->hwcap_get_all();
 229         for (cap = 0; hwcaps[cap]; cap++) {
 230                 if (!(hwo = sr_hw_hwcap_get(hwcaps[cap])))
 231                         continue;
 232
 233                 if (title) {
 234                         printf("%s", title);
 235                         title = NULL;
 236                 }
 237
 238                 if (hwo->hwcap == SR_HWCAP_PATTERN_MODE) {
 239                         printf("    %s", hwo->shortname);
 240                         if (sr_dev_info_get(dev, SR_DI_PATTERNS,
 241                                         (const void **)&stropts) == SR_OK) {
 242                                 printf(" - supported patterns:\n");
 243                                 for (i = 0; stropts[i]; i++)
 244                                         printf("      %s\n", stropts[i]);
 245                         } else {
 246                                 printf("\n");
 247                         }
 248                 } else if (hwo->hwcap == SR_HWCAP_SAMPLERATE) {
 249                         printf("    %s", hwo->shortname);
 250                         /* Supported samplerates */
 251                         if (sr_dev_info_get(dev, SR_DI_SAMPLERATES,
 252                                         (const void **)&samplerates) != SR_OK) {
 253                                 printf("\n");
 254                                 continue;
 255                         }
 256
 257                         if (samplerates->step) {
 258                                 /* low */
 259                                 if (!(s = sr_samplerate_string(samplerates->low)))
 260                                         continue;
 261                                 printf(" (%s", s);
 262                                 g_free(s);
 263                                 /* high */
 264                                 if (!(s = sr_samplerate_string(samplerates->high)))
 265                                         continue;
 266                                 printf(" - %s", s);
 267                                 g_free(s);
 268                                 /* step */
 269                                 if (!(s = sr_samplerate_string(samplerates->step)))
 270                                         continue;
 271                                 printf(" in steps of %s)\n", s);
 272                                 g_free(s);
 273                         } else {
 274                                 printf(" - supported samplerates:\n");
 275                                 for (i = 0; samplerates->list[i]; i++) {
 276                                         printf("      %s\n", sr_samplerate_string(samplerates->list[i]));
 277                                 }
 278                         }
 279                 } else {
 280                         printf("    %s\n", hwo->shortname);
 281                 }
 282         }
 283 }
 284
 285 static void show_pd_detail(void)
 286 {
 287         GSList *l;
 288         struct srd_decoder *dec;
 289         char **pdtokens, **pdtok, **ann, *doc;
 290         struct srd_probe *p;
 291
 292         pdtokens = g_strsplit(opt_pds, ",", -1);
 293         for (pdtok = pdtokens; *pdtok; pdtok++) {
 294                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 295                         printf("Protocol decoder %s not found.\n", *pdtok);
 296                         return;
 297                 }
 298                 printf("ID: %s\nName: %s\nLong name: %s\nDescription: %s\n",
 299                                 dec->id, dec->name, dec->longname, dec->desc);
 300                 printf("License: %s\n", dec->license);
 301                 printf("Annotations:\n");
 302                 if (dec->annotations) {
 303                         for (l = dec->annotations; l; l = l->next) {
 304                                 ann = l->data;
 305                                 printf("- %s\n  %s\n", ann[0], ann[1]);
 306                         }
 307                 } else {
 308                         printf("None.\n");
 309                 }
 310                 /* TODO: Print supported decoder options. */
 311                 printf("Required probes:\n");
 312                 if (dec->probes) {
 313                         for (l = dec->probes; l; l = l->next) {
 314                                 p = l->data;
 315                                 printf("- %s (%s): %s\n",
 316                                        p->name, p->id, p->desc);
 317                         }
 318                 } else {
 319                         printf("None.\n");
 320                 }
 321                 printf("Optional probes:\n");
 322                 if (dec->opt_probes) {
 323                         for (l = dec->opt_probes; l; l = l->next) {
 324                                 p = l->data;
 325                                 printf("- %s (%s): %s\n",
 326                                        p->name, p->id, p->desc);
 327                         }
 328                 } else {
 329                         printf("None.\n");
 330                 }
 331                 if ((doc = srd_decoder_doc_get(dec))) {
 332                         printf("Documentation:\n%s\n",
 333                                doc[0] == '\n' ? doc + 1 : doc);
 334                         g_free(doc);
 335                 }
 336         }
 337
 338         g_strfreev(pdtokens);
 339 }
 340
 341 static void datafeed_in(struct sr_dev *dev, struct sr_datafeed_packet *packet)
 342 {
 343         static struct sr_output *o = NULL;
 344         static int probelist[SR_MAX_NUM_PROBES + 1] = { 0 };
 345         static uint64_t received_samples = 0;
 346         static int unitsize = 0;
 347         static int triggered = 0;
 348         static FILE *outfile = NULL;
 349         struct sr_probe *probe;
 350         struct sr_datafeed_header *header;
 351         struct sr_datafeed_logic *logic;
 352         int num_enabled_probes, sample_size, ret, i;
 353         uint64_t output_len, filter_out_len;
 354         uint8_t *output_buf, *filter_out;
 355
 356         /* If the first packet to come in isn't a header, don't even try. */
 357         if (packet->type != SR_DF_HEADER && o == NULL)
 358                 return;
 359
 360         sample_size = -1;
 361         switch (packet->type) {
 362         case SR_DF_HEADER:
 363                 g_debug("cli: Received SR_DF_HEADER");
 364                 /* Initialize the output module. */
 365                 if (!(o = g_try_malloc(sizeof(struct sr_output)))) {
 366                         g_critical("Output module malloc failed.");
 367                         exit(1);
 368                 }
 369                 o->format = output_format;
 370                 o->dev = dev;
 371                 o->param = output_format_param;
 372                 if (o->format->init) {
 373                         if (o->format->init(o) != SR_OK) {
 374                                 g_critical("Output format initialization failed.");
 375                                 exit(1);
 376                         }
 377                 }
 378
 379                 header = packet->payload;
 380                 num_enabled_probes = 0;
 381                 for (i = 0; i < header->num_logic_probes; i++) {
 382                         probe = g_slist_nth_data(dev->probes, i);
 383                         if (probe->enabled)
 384                                 probelist[num_enabled_probes++] = probe->index;
 385                 }
 386                 /* How many bytes we need to store num_enabled_probes bits */
 387                 unitsize = (num_enabled_probes + 7) / 8;
 388
 389                 outfile = stdout;
 390                 if (opt_output_file) {
 391                         if (default_output_format) {
 392                                 /* output file is in session format, which means we'll
 393                                  * dump everything in the datastore as it comes in,
 394                                  * and save from there after the session. */
 395                                 outfile = NULL;
 396                                 ret = sr_datastore_new(unitsize, &(dev->datastore));
 397                                 if (ret != SR_OK) {
 398                                         g_critical("Failed to create datastore.");
 399                                         exit(1);
 400                                 }
 401                         } else {
 402                                 /* saving to a file in whatever format was set
 403                                  * with -O, so all we need is a filehandle */
 404                                 outfile = g_fopen(opt_output_file, "wb");
 405                         }
 406                 }
 407                 if (opt_pds) {
 408                         if (srd_session_start(num_enabled_probes, unitsize,
 409                                         header->samplerate) != SRD_OK)
 410                                 sr_session_halt();
 411                 }
 412                 break;
 413         case SR_DF_END:
 414                 g_debug("cli: Received SR_DF_END");
 415                 if (!o) {
 416                         g_debug("cli: double end!");
 417                         break;
 418                 }
 419                 if (o->format->event) {
 420                         o->format->event(o, SR_DF_END, &output_buf, &output_len);
 421                         if (output_len) {
 422                                 if (outfile)
 423                                         fwrite(output_buf, 1, output_len, outfile);
 424                                 g_free(output_buf);
 425                                 output_len = 0;
 426                         }
 427                 }
 428                 if (limit_samples && received_samples < limit_samples)
 429                         g_warning("Device only sent %" PRIu64 " samples.",
 430                                received_samples);
 431                 if (opt_continuous)
 432                         g_warning("Device stopped after %" PRIu64 " samples.",
 433                                received_samples);
 434                 sr_session_halt();
 435                 if (outfile && outfile != stdout)
 436                         fclose(outfile);
 437                 g_free(o);
 438                 o = NULL;
 439                 break;
 440         case SR_DF_TRIGGER:
 441                 g_debug("cli: received SR_DF_TRIGGER");
 442                 if (o->format->event)
 443                         o->format->event(o, SR_DF_TRIGGER, &output_buf,
 444                                          &output_len);
 445                 triggered = 1;
 446                 break;
 447         case SR_DF_LOGIC:
 448                 logic = packet->payload;
 449                 sample_size = logic->unitsize;
 450                 g_message("cli: received SR_DF_LOGIC, %"PRIu64" bytes", logic->length);
 451                 break;
 452         }
 453
 454         /* not supporting anything but SR_DF_LOGIC for now */
 455
 456         if (sample_size == -1 || logic->length == 0)
 457                 return;
 458
 459         /* Don't store any samples until triggered. */
 460         if (opt_wait_trigger && !triggered)
 461                 return;
 462
 463         if (limit_samples && received_samples >= limit_samples)
 464                 return;
 465
 466         /* TODO: filters only support SR_DF_LOGIC */
 467         ret = sr_filter_probes(sample_size, unitsize, probelist,
 468                                    logic->data, logic->length,
 469                                    &filter_out, &filter_out_len);
 470         if (ret != SR_OK)
 471                 return;
 472
 473         /* what comes out of the filter is guaranteed to be packed into the
 474          * minimum size needed to support the number of samples at this sample
 475          * size. however, the driver may have submitted too much -- cut off
 476          * the buffer of the last packet according to the sample limit.
 477          */
 478         if (limit_samples && (received_samples + logic->length / sample_size >
 479                         limit_samples * sample_size))
 480                 filter_out_len = limit_samples * sample_size - received_samples;
 481
 482         if (dev->datastore)
 483                 sr_datastore_put(dev->datastore, filter_out,
 484                                  filter_out_len, sample_size, probelist);
 485
 486         if (opt_output_file && default_output_format)
 487                 /* saving to a session file, don't need to do anything else
 488                  * to this data for now. */
 489                 goto cleanup;
 490
 491         if (opt_pds) {
 492                 if (srd_session_send(received_samples, (uint8_t*)filter_out,
 493                                 filter_out_len) != SRD_OK)
 494                         sr_session_halt();
 495         } else {
 496                 output_len = 0;
 497                 if (o->format->data && packet->type == o->format->df_type)
 498                         o->format->data(o, filter_out, filter_out_len, &output_buf, &output_len);
 499                 if (output_len) {
 500                         fwrite(output_buf, 1, output_len, outfile);
 501                         g_free(output_buf);
 502                 }
 503         }
 504
 505 cleanup:
 506         g_free(filter_out);
 507         received_samples += logic->length / sample_size;
 508 }
 509
 510 /* Register the given PDs for this session.
 511  * Accepts a string of the form: "spi:sck=3:sdata=4,spi:sck=3:sdata=5"
 512  * That will instantiate two SPI decoders on the clock but different data
 513  * lines.
 514  */
 515 static int register_pds(struct sr_dev *dev, const char *pdstring)
 516 {
 517         GHashTable *pd_opthash;
 518         struct srd_decoder_inst *di;
 519         int ret;
 520         char **pdtokens, **pdtok, *pd_name;
 521
 522         /* Avoid compiler warnings. */
 523         (void)dev;
 524
 525         ret = 0;
 526         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 527                         g_free, NULL);
 528         pd_name = NULL;
 529         pd_opthash = NULL;
 530         pdtokens = g_strsplit(pdstring, ",", 0);
 531         for (pdtok = pdtokens; *pdtok; pdtok++) {
 532                 if (!(pd_opthash = parse_generic_arg(*pdtok))) {
 533                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 534                         goto err_out;
 535                 }
 536
 537                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 538                 g_hash_table_remove(pd_opthash, "sigrok_key");
 539                 if (srd_decoder_load(pd_name) != SRD_OK) {
 540                         g_critical("Failed to load protocol decoder %s.", pd_name);
 541                         ret = 1;
 542                         goto err_out;
 543                 }
 544                 if (!(di = srd_inst_new(pd_name, pd_opthash))) {
 545                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 546                         ret = 1;
 547                         goto err_out;
 548                 }
 549
 550                 /* If no annotation list was specified, add them all in now.
 551                  * This will be pared down later to leave only the last PD
 552                  * in the stack.
 553                  */
 554                 if (!opt_pd_annotations)
 555                         g_hash_table_insert(pd_ann_visible,
 556                                             g_strdup(di->inst_id), NULL);
 557
 558                 /* Any keys left in the options hash are probes, where the key
 559                  * is the probe name as specified in the decoder class, and the
 560                  * value is the probe number i.e. the order in which the PD's
 561                  * incoming samples are arranged. */
 562                 if (srd_inst_probe_set_all(di, pd_opthash) != SRD_OK) {
 563                         ret = 1;
 564                         goto err_out;
 565                 }
 566                 g_hash_table_destroy(pd_opthash);
 567                 pd_opthash = NULL;
 568         }
 569
 570 err_out:
 571         g_strfreev(pdtokens);
 572         if (pd_opthash)
 573                 g_hash_table_destroy(pd_opthash);
 574         if (pd_name)
 575                 g_free(pd_name);
 576
 577         return ret;
 578 }
 579
 580 int setup_pd_stack(void)
 581 {
 582         struct srd_decoder_inst *di_from, *di_to;
 583         int ret, i;
 584         char **pds;
 585
 586         /* Set up the protocol decoder stack. */
 587         pds = g_strsplit(opt_pds, ",", 0);
 588         if (g_strv_length(pds) > 1) {
 589                 if (opt_pd_stack) {
 590                         /* A stack setup was specified, use that. */
 591                         g_strfreev(pds);
 592                         pds = g_strsplit(opt_pd_stack, ",", 0);
 593                         if (g_strv_length(pds) < 2) {
 594                                 g_strfreev(pds);
 595                                 g_critical("Specify at least two protocol decoders to stack.");
 596                                 return 1;
 597                         }
 598                 }
 599
 600                 if (!(di_from = srd_inst_find_by_id(pds[0]))) {
 601                         g_critical("Cannot stack protocol decoder '%s': "
 602                                         "instance not found.", pds[0]);
 603                         return 1;
 604                 }
 605                 for (i = 1; pds[i]; i++) {
 606                         if (!(di_to = srd_inst_find_by_id(pds[i]))) {
 607                                 g_critical("Cannot stack protocol decoder '%s': "
 608                                                 "instance not found.", pds[i]);
 609                                 return 1;
 610                         }
 611                         if ((ret = srd_inst_stack(di_from, di_to)) != SRD_OK)
 612                                 return 1;
 613
 614                         /* Don't show annotation from this PD. Only the last PD in
 615                          * the stack will be left on the annotation list (unless
 616                          * the annotation list was specifically provided).
 617                          */
 618                         if (!opt_pd_annotation)
 619                                 g_hash_table_remove(pd_ann_visible,
 620                                                     di_from->inst_id);
 621
 622                         di_from = di_to;
 623                 }
 624         }
 625         g_strfreev(pds);
 626
 627         return 0;
 628 }
 629
 630 int setup_pd_annotations(void)
 631 {
 632         GSList *l;
 633         struct srd_decoder *dec;
 634         int ann;
 635         char **pds, **pdtok, **keyval, **ann_descr;
 636
 637         /* Set up custom list of PDs and annotations to show. */
 638         if (opt_pd_annotations) {
 639                 pds = g_strsplit(opt_pd_annotations, ",", 0);
 640                 for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 641                         ann = 0;
 642                         keyval = g_strsplit(*pdtok, "=", 0);
 643                         if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 644                                 g_critical("Protocol decoder '%s' not found.", keyval[0]);
 645                                 return 1;
 646                         }
 647                         if (!dec->annotations) {
 648                                 g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
 649                                 return 1;
 650                         }
 651                         if (g_strv_length(keyval) == 2) {
 652                                 for (l = dec->annotations; l; l = l->next, ann++) {
 653                                         ann_descr = l->data;
 654                                         if (!canon_cmp(ann_descr[0], keyval[1]))
 655                                                 /* Found it. */
 656                                                 break;
 657                                 }
 658                                 if (!l) {
 659                                         g_critical("Annotation '%s' not found "
 660                                                         "for protocol decoder '%s'.", keyval[1], keyval[0]);
 661                                         return 1;
 662                                 }
 663                         }
 664                         g_debug("cli: showing protocol decoder annotation %d from '%s'", ann, keyval[0]);
 665                         g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]), GINT_TO_POINTER(ann));
 666                         g_strfreev(keyval);
 667                 }
 668                 g_strfreev(pds);
 669         }
 670
 671         return 0;
 672 }
 673
 674 int setup_output_format(void)
 675 {
 676         GHashTable *fmtargs;
 677         GHashTableIter iter;
 678         gpointer key, value;
 679         struct sr_output_format **outputs;
 680         int i;
 681         char *fmtspec;
 682
 683         if (!opt_output_format) {
 684                 opt_output_format = DEFAULT_OUTPUT_FORMAT;
 685                 /* we'll need to remember this so when saving to a file
 686                  * later, sigrok session format will be used.
 687                  */
 688                 default_output_format = TRUE;
 689         }
 690         fmtargs = parse_generic_arg(opt_output_format);
 691         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 692         if (!fmtspec) {
 693                 g_critical("Invalid output format.");
 694                 return 1;
 695         }
 696         outputs = sr_output_list();
 697         for (i = 0; outputs[i]; i++) {
 698                 if (strcmp(outputs[i]->id, fmtspec))
 699                         continue;
 700                 g_hash_table_remove(fmtargs, "sigrok_key");
 701                 output_format = outputs[i];
 702                 g_hash_table_iter_init(&iter, fmtargs);
 703                 while (g_hash_table_iter_next(&iter, &key, &value)) {
 704                         /* only supporting one parameter per output module
 705                          * for now, and only its value */
 706                         output_format_param = g_strdup(value);
 707                         break;
 708                 }
 709                 break;
 710         }
 711         if (!output_format) {
 712                 g_critical("Invalid output format %s.", opt_output_format);
 713                 return 1;
 714         }
 715         g_hash_table_destroy(fmtargs);
 716
 717         return 0;
 718 }
 719
 720 void show_pd_annotation(struct srd_proto_data *pdata, void *cb_data)
 721 {
 722         int i;
 723         char **annotations;
 724         gpointer ann_format;
 725
 726         /* 'cb_data' is not used in this specific callback. */
 727         (void)cb_data;
 728
 729         if (!pd_ann_visible)
 730                 return;
 731
 732         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
 733                         NULL, &ann_format))
 734                 /* Not in the list of PDs whose annotations we're showing. */
 735                 return;
 736
 737         if (pdata->ann_format != GPOINTER_TO_INT(ann_format))
 738                 /* We don't want this particular format from the PD. */
 739                 return;
 740
 741         annotations = pdata->data;
 742         if (opt_loglevel > SR_LOG_WARN)
 743                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
 744         printf("%s: ", pdata->pdo->proto_id);
 745         for (i = 0; annotations[i]; i++)
 746                 printf("\"%s\" ", annotations[i]);
 747         printf("\n");
 748 }
 749
 750 static int select_probes(struct sr_dev *dev)
 751 {
 752         struct sr_probe *probe;
 753         char **probelist;
 754         int max_probes, i;
 755
 756         if (!opt_probes)
 757                 return SR_OK;
 758
 759         /*
 760          * This only works because a device by default initializes
 761          * and enables all its probes.
 762          */
 763         max_probes = g_slist_length(dev->probes);
 764         probelist = parse_probestring(max_probes, opt_probes);
 765         if (!probelist) {
 766                 return SR_ERR;
 767         }
 768
 769         for (i = 0; i < max_probes; i++) {
 770                 if (probelist[i]) {
 771                         sr_dev_probe_name_set(dev, i + 1, probelist[i]);
 772                         g_free(probelist[i]);
 773                 } else {
 774                         probe = sr_dev_probe_find(dev, i + 1);
 775                         probe->enabled = FALSE;
 776                 }
 777         }
 778         g_free(probelist);
 779
 780         return SR_OK;
 781 }
 782
 783 /**
 784  * Return the input file format which the CLI tool should use.
 785  *
 786  * If the user specified -I / --input-format, use that one. Otherwise, try to
 787  * autodetect the format as good as possible. Failing that, return NULL.
 788  *
 789  * @param filename The filename of the input file. Must not be NULL.
 790  * @param opt The -I / --input-file option the user specified (or NULL).
 791  *
 792  * @return A pointer to the 'struct sr_input_format' that should be used,
 793  *         or NULL if no input format was selected or auto-detected.
 794  */
 795 static struct sr_input_format *determine_input_file_format(
 796                         const char *filename, const char *opt)
 797 {
 798         int i;
 799         struct sr_input_format **inputs;
 800
 801         /* If there are no input formats, return NULL right away. */
 802         inputs = sr_input_list();
 803         if (!inputs) {
 804                 g_critical("No supported input formats available.");
 805                 return NULL;
 806         }
 807
 808         /* If the user specified -I / --input-format, use that one. */
 809         if (opt) {
 810                 for (i = 0; inputs[i]; i++) {
 811                         if (strcasecmp(inputs[i]->id, opt_input_format))
 812                                 continue;
 813                         g_debug("Using user-specified input file format '%s'.",
 814                                         inputs[i]->id);
 815                         return inputs[i];
 816                 }
 817
 818                 /* The user specified an unknown input format, return NULL. */
 819                 g_critical("Error: specified input file format '%s' is "
 820                         "unknown.", opt_input_format);
 821                 return NULL;
 822         }
 823
 824         /* Otherwise, try to find an input module that can handle this file. */
 825         for (i = 0; inputs[i]; i++) {
 826                 if (inputs[i]->format_match(filename))
 827                         break;
 828         }
 829
 830         /* Return NULL if no input module wanted to touch this. */
 831         if (!inputs[i]) {
 832                 g_critical("Error: no matching input module found.");
 833                 return NULL;
 834         }
 835
 836         g_debug("cli: Autodetected '%s' input format for file '%s'.",
 837                 inputs[i]->id, filename);
 838
 839         return inputs[i];
 840 }
 841
 842 static void load_input_file_format(void)
 843 {
 844         struct stat st;
 845         struct sr_input *in;
 846         struct sr_input_format *input_format;
 847
 848         if (!(input_format = determine_input_file_format(opt_input_file,
 849                                                    opt_input_format)))
 850                 /* The exact cause was already logged. */
 851                 return;
 852
 853         if (stat(opt_input_file, &st) == -1) {
 854                 g_critical("Failed to load %s: %s", opt_input_file,
 855                         strerror(errno));
 856                 exit(1);
 857         }
 858
 859         /* Initialize the input module. */
 860         if (!(in = g_try_malloc(sizeof(struct sr_input)))) {
 861                 g_critical("Failed to allocate input module.");
 862                 exit(1);
 863         }
 864         in->format = input_format;
 865         in->param = input_format_param;
 866         if (in->format->init) {
 867                 if (in->format->init(in) != SR_OK) {
 868                         g_critical("Input format init failed.");
 869                         exit(1);
 870                 }
 871         }
 872
 873         if (select_probes(in->vdev) > 0)
 874             return;
 875
 876         sr_session_new();
 877         sr_session_datafeed_callback_add(datafeed_in);
 878         if (sr_session_dev_add(in->vdev) != SR_OK) {
 879                 g_critical("Failed to use device.");
 880                 sr_session_destroy();
 881                 return;
 882         }
 883
 884         input_format->loadfile(in, opt_input_file);
 885         if (opt_output_file && default_output_format) {
 886                 if (sr_session_save(opt_output_file) != SR_OK)
 887                         g_critical("Failed to save session.");
 888         }
 889         sr_session_destroy();
 890 }
 891
 892 static void load_input_file(void)
 893 {
 894
 895         if (sr_session_load(opt_input_file) == SR_OK) {
 896                 /* sigrok session file */
 897                 sr_session_datafeed_callback_add(datafeed_in);
 898                 sr_session_start();
 899                 sr_session_run();
 900                 sr_session_stop();
 901         }
 902         else {
 903                 /* fall back on input modules */
 904                 load_input_file_format();
 905         }
 906 }
 907
 908 int num_real_devs(void)
 909 {
 910         struct sr_dev *dev;
 911         GSList *devs, *l;
 912         int num_devs;
 913
 914         num_devs = 0;
 915         devs = sr_dev_list();
 916         for (l = devs; l; l = l->next) {
 917                 dev = l->data;
 918                 if (!sr_dev_has_hwcap(dev, SR_HWCAP_DEMO_DEV))
 919                         num_devs++;
 920         }
 921
 922         return num_devs;
 923 }
 924
 925 static int set_dev_options(struct sr_dev *dev, GHashTable *args)
 926 {
 927         GHashTableIter iter;
 928         gpointer key, value;
 929         int ret, i;
 930         uint64_t tmp_u64;
 931         gboolean found;
 932         gboolean tmp_bool;
 933
 934         g_hash_table_iter_init(&iter, args);
 935         while (g_hash_table_iter_next(&iter, &key, &value)) {
 936                 found = FALSE;
 937                 for (i = 0; sr_hwcap_options[i].hwcap; i++) {
 938                         if (strcmp(sr_hwcap_options[i].shortname, key))
 939                                 continue;
 940                         if ((value == NULL) &&
 941                             (sr_hwcap_options[i].type != SR_T_BOOL)) {
 942                                 g_critical("Option '%s' needs a value.", (char *)key);
 943                                 return SR_ERR;
 944                         }
 945                         found = TRUE;
 946                         switch (sr_hwcap_options[i].type) {
 947                         case SR_T_UINT64:
 948                                 ret = sr_parse_sizestring(value, &tmp_u64);
 949                                 if (ret != SR_OK)
 950                                         break;
 951                                 ret = dev->driver->dev_config_set(dev->driver_index,
 952                                         sr_hwcap_options[i].hwcap, &tmp_u64);
 953                                 break;
 954                         case SR_T_CHAR:
 955                                 ret = dev->driver->dev_config_set(dev->driver_index,
 956                                         sr_hwcap_options[i].hwcap, value);
 957                                 break;
 958                         case SR_T_BOOL:
 959                                 if (!value)
 960                                         tmp_bool = TRUE;
 961                                 else
 962                                         tmp_bool = sr_parse_boolstring(value);
 963                                 ret = dev->driver->dev_config_set(dev->driver_index,
 964                                                 sr_hwcap_options[i].hwcap,
 965                                                 GINT_TO_POINTER(tmp_bool));
 966                                 break;
 967                         default:
 968                                 ret = SR_ERR;
 969                         }
 970
 971                         if (ret != SR_OK) {
 972                                 g_critical("Failed to set device option '%s'.", (char *)key);
 973                                 return ret;
 974                         }
 975                         else
 976                                 break;
 977                 }
 978                 if (!found) {
 979                         g_critical("Unknown device option '%s'.", (char *) key);
 980                         return SR_ERR;
 981                 }
 982         }
 983
 984         return SR_OK;
 985 }
 986
 987 static void run_session(void)
 988 {
 989         struct sr_dev *dev;
 990         GHashTable *devargs;
 991         int num_devs, max_probes, i;
 992         uint64_t time_msec;
 993         char **probelist, *devspec;
 994
 995         devargs = NULL;
 996         if (opt_dev) {
 997                 devargs = parse_generic_arg(opt_dev);
 998                 devspec = g_hash_table_lookup(devargs, "sigrok_key");
 999                 dev = parse_devstring(devspec);
1000                 if (!dev) {
1001                         g_critical("Device not found.");
1002                         return;
1003                 }
1004                 g_hash_table_remove(devargs, "sigrok_key");
1005         } else {
1006                 num_devs = num_real_devs();
1007                 if (num_devs == 1) {
1008                         /* No device specified, but there is only one. */
1009                         devargs = NULL;
1010                         dev = parse_devstring("0");
1011                 } else if (num_devs == 0) {
1012                         g_critical("No devices found.");
1013                         return;
1014                 } else {
1015                         g_critical("%d devices found, please select one.", num_devs);
1016                         return;
1017                 }
1018         }
1019
1020         sr_session_new();
1021         sr_session_datafeed_callback_add(datafeed_in);
1022
1023         if (sr_session_dev_add(dev) != SR_OK) {
1024                 g_critical("Failed to use device.");
1025                 sr_session_destroy();
1026                 return;
1027         }
1028
1029         if (devargs) {
1030                 if (set_dev_options(dev, devargs) != SR_OK) {
1031                         sr_session_destroy();
1032                         return;
1033                 }
1034                 g_hash_table_destroy(devargs);
1035         }
1036
1037         if (select_probes(dev) != SR_OK)
1038             return;
1039
1040         if (opt_continuous) {
1041                 if (!sr_driver_hwcap_exists(dev->driver, SR_HWCAP_CONTINUOUS)) {
1042                         g_critical("This device does not support continuous sampling.");
1043                         sr_session_destroy();
1044                         return;
1045                 }
1046         }
1047
1048         if (opt_triggers) {
1049                 probelist = sr_parse_triggerstring(dev, opt_triggers);
1050                 if (!probelist) {
1051                         sr_session_destroy();
1052                         return;
1053                 }
1054
1055                 max_probes = g_slist_length(dev->probes);
1056                 for (i = 0; i < max_probes; i++) {
1057                         if (probelist[i]) {
1058                                 sr_dev_trigger_set(dev, i + 1, probelist[i]);
1059                                 g_free(probelist[i]);
1060                         }
1061                 }
1062                 g_free(probelist);
1063         }
1064
1065         if (opt_time) {
1066                 time_msec = sr_parse_timestring(opt_time);
1067                 if (time_msec == 0) {
1068                         g_critical("Invalid time '%s'", opt_time);
1069                         sr_session_destroy();
1070                         return;
1071                 }
1072
1073                 if (sr_driver_hwcap_exists(dev->driver, SR_HWCAP_LIMIT_MSEC)) {
1074                         if (dev->driver->dev_config_set(dev->driver_index,
1075                             SR_HWCAP_LIMIT_MSEC, &time_msec) != SR_OK) {
1076                                 g_critical("Failed to configure time limit.");
1077                                 sr_session_destroy();
1078                                 return;
1079                         }
1080                 }
1081                 else {
1082                         /* time limit set, but device doesn't support this...
1083                          * convert to samples based on the samplerate.
1084                          */
1085                         limit_samples = 0;
1086                         if (sr_dev_has_hwcap(dev, SR_HWCAP_SAMPLERATE)) {
1087                                 const uint64_t *samplerate;
1088
1089                                 sr_dev_info_get(dev, SR_DI_CUR_SAMPLERATE,
1090                                                 (const void **)&samplerate);
1091                                 limit_samples = (*samplerate) * time_msec / (uint64_t)1000;
1092                         }
1093                         if (limit_samples == 0) {
1094                                 g_critical("Not enough time at this samplerate.");
1095                                 sr_session_destroy();
1096                                 return;
1097                         }
1098
1099                         if (dev->driver->dev_config_set(dev->driver_index,
1100                             SR_HWCAP_LIMIT_SAMPLES, &limit_samples) != SR_OK) {
1101                                 g_critical("Failed to configure time-based sample limit.");
1102                                 sr_session_destroy();
1103                                 return;
1104                         }
1105                 }
1106         }
1107
1108         if (opt_samples) {
1109                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)
1110                         || (dev->driver->dev_config_set(dev->driver_index,
1111                             SR_HWCAP_LIMIT_SAMPLES, &limit_samples) != SR_OK)) {
1112                         g_critical("Failed to configure sample limit.");
1113                         sr_session_destroy();
1114                         return;
1115                 }
1116         }
1117
1118         if (dev->driver->dev_config_set(dev->driver_index,
1119                   SR_HWCAP_PROBECONFIG, (char *)dev->probes) != SR_OK) {
1120                 g_critical("Failed to configure probes.");
1121                 sr_session_destroy();
1122                 return;
1123         }
1124
1125         if (sr_session_start() != SR_OK) {
1126                 g_critical("Failed to start session.");
1127                 sr_session_destroy();
1128                 return;
1129         }
1130
1131         if (opt_continuous)
1132                 add_anykey();
1133
1134         sr_session_run();
1135
1136         if (opt_continuous)
1137                 clear_anykey();
1138
1139         if (opt_output_file && default_output_format) {
1140                 if (sr_session_save(opt_output_file) != SR_OK)
1141                         g_critical("Failed to save session.");
1142         }
1143         sr_session_destroy();
1144 }
1145
1146 static void logger(const gchar *log_domain, GLogLevelFlags log_level,
1147                    const gchar *message, gpointer cb_data)
1148 {
1149         /* Avoid compiler warnings. */
1150         (void)log_domain;
1151         (void)cb_data;
1152
1153         /*
1154          * All messages, warnings, errors etc. go to stderr (not stdout) in
1155          * order to not mess up the CLI tool data output, e.g. VCD output.
1156          */
1157         if (log_level & (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)
1158                         || opt_loglevel > SR_LOG_WARN) {
1159                 fprintf(stderr, "%s\n", message);
1160                 fflush(stderr);
1161         }
1162 }
1163
1164 int main(int argc, char **argv)
1165 {
1166         GOptionContext *context;
1167         GError *error;
1168
1169         g_log_set_default_handler(logger, NULL);
1170
1171         error = NULL;
1172         context = g_option_context_new(NULL);
1173         g_option_context_add_main_entries(context, optargs, NULL);
1174
1175         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1176                 g_critical("%s", error->message);
1177                 return 1;
1178         }
1179
1180         /* Set the loglevel (amount of messages to output) for libsigrok. */
1181         if (sr_log_loglevel_set(opt_loglevel) != SR_OK)
1182                 return 1;
1183
1184         /* Set the loglevel (amount of messages to output) for libsigrokdecode. */
1185         if (srd_log_loglevel_set(opt_loglevel) != SRD_OK)
1186                 return 1;
1187
1188         if (sr_init() != SR_OK)
1189                 return 1;
1190
1191         if (opt_pds) {
1192                 if (srd_init(NULL) != SRD_OK)
1193                         return 1;
1194                 if (register_pds(NULL, opt_pds) != 0)
1195                         return 1;
1196                 if (srd_pd_output_callback_add(SRD_OUTPUT_ANN,
1197                                 show_pd_annotations, NULL) != SRD_OK)
1198                         return 1;
1199                 if (setup_pd_stack() != 0)
1200                         return 1;
1201                 if (setup_pd_annotations() != 0)
1202                         return 1;
1203         }
1204
1205         if (setup_output_format() != 0)
1206                 return 1;
1207
1208         if (opt_version)
1209                 show_version();
1210         else if (opt_list_devs)
1211                 show_dev_list();
1212         else if (opt_input_file)
1213                 load_input_file();
1214         else if (opt_samples || opt_time || opt_continuous)
1215                 run_session();
1216         else if (opt_dev)
1217                 show_dev_detail();
1218         else if (opt_pds)
1219                 show_pd_detail();
1220         else
1221                 printf("%s", g_option_context_get_help(context, TRUE, NULL));
1222
1223         if (opt_pds)
1224                 srd_exit();
1225
1226         g_option_context_free(context);
1227         sr_exit();
1228
1229         return 0;
1230 }