session.c

   1 /*
   2  * This file is part of the sigrok-cli project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include <glib.h>
  22 #include <glib/gstdio.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include "sigrok-cli.h"
  26
  27 static uint64_t limit_samples = 0;
  28 static uint64_t limit_frames = 0;
  29
  30 #ifdef HAVE_SRD
  31 extern struct srd_session *srd_sess;
  32 #endif
  33
  34 static int set_limit_time(const struct sr_dev_inst *sdi)
  35 {
  36         GVariant *gvar;
  37         uint64_t time_msec;
  38         uint64_t samplerate;
  39         struct sr_dev_driver *driver;
  40
  41         driver = sr_dev_inst_driver_get(sdi);
  42
  43         if (!(time_msec = sr_parse_timestring(opt_time))) {
  44                 g_critical("Invalid time '%s'", opt_time);
  45                 return SR_ERR;
  46         }
  47
  48         if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_LIMIT_MSEC)
  49                         & SR_CONF_SET) {
  50                 gvar = g_variant_new_uint64(time_msec);
  51                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
  52                         g_critical("Failed to configure time limit.");
  53                         return SR_ERR;
  54                 }
  55         } else if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_SAMPLERATE)
  56                         & (SR_CONF_GET | SR_CONF_SET)) {
  57                 /* Convert to samples based on the samplerate. */
  58                 sr_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
  59                 samplerate = g_variant_get_uint64(gvar);
  60                 g_variant_unref(gvar);
  61                 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
  62                 if (limit_samples == 0) {
  63                         g_critical("Not enough time at this samplerate.");
  64                         return SR_ERR;
  65                 }
  66                 gvar = g_variant_new_uint64(limit_samples);
  67                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
  68                         g_critical("Failed to configure time-based sample limit.");
  69                         return SR_ERR;
  70                 }
  71         } else {
  72                 g_critical("This device does not support time limits.");
  73                 return SR_ERR;
  74         }
  75
  76         return SR_OK;
  77 }
  78
  79 const struct sr_output *setup_output_format(const struct sr_dev_inst *sdi, FILE **outfile)
  80 {
  81         const struct sr_output_module *omod;
  82         const struct sr_option **options;
  83         const struct sr_output *o;
  84         GHashTable *fmtargs, *fmtopts;
  85         char *fmtspec;
  86
  87         if (!opt_output_format) {
  88                 if (opt_output_file) {
  89                         opt_output_format = DEFAULT_OUTPUT_FORMAT_FILE;
  90                 } else {
  91                         opt_output_format = DEFAULT_OUTPUT_FORMAT_NOFILE;
  92                 }
  93         }
  94
  95         fmtargs = parse_generic_arg(opt_output_format, TRUE);
  96         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
  97         if (!fmtspec)
  98                 g_critical("Invalid output format.");
  99         if (!(omod = sr_output_find(fmtspec)))
 100                 g_critical("Unknown output module '%s'.", fmtspec);
 101         g_hash_table_remove(fmtargs, "sigrok_key");
 102         if ((options = sr_output_options_get(omod))) {
 103                 fmtopts = generic_arg_to_opt(options, fmtargs);
 104                 sr_output_options_free(options);
 105         } else
 106                 fmtopts = NULL;
 107         o = sr_output_new(omod, fmtopts, sdi, opt_output_file);
 108
 109         if (opt_output_file) {
 110                 if (!sr_output_test_flag(omod, SR_OUTPUT_INTERNAL_IO_HANDLING)) {
 111                         *outfile = g_fopen(opt_output_file, "wb");
 112                         if (!*outfile) {
 113                                 g_critical("Cannot write to output file '%s'.",
 114                                         opt_output_file);
 115                         }
 116                 } else {
 117                         *outfile = NULL;
 118                 }
 119         } else {
 120                 setup_binary_stdout();
 121                 *outfile = stdout;
 122         }
 123
 124         if (fmtopts)
 125                 g_hash_table_destroy(fmtopts);
 126         g_hash_table_destroy(fmtargs);
 127
 128         return o;
 129 }
 130
 131 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
 132 {
 133         const struct sr_transform_module *tmod;
 134         const struct sr_option **options;
 135         const struct sr_transform *t;
 136         GHashTable *fmtargs, *fmtopts;
 137         char *fmtspec;
 138
 139         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
 140         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 141         if (!fmtspec)
 142                 g_critical("Invalid transform module.");
 143         if (!(tmod = sr_transform_find(fmtspec)))
 144                 g_critical("Unknown transform module '%s'.", fmtspec);
 145         g_hash_table_remove(fmtargs, "sigrok_key");
 146         if ((options = sr_transform_options_get(tmod))) {
 147                 fmtopts = generic_arg_to_opt(options, fmtargs);
 148                 sr_transform_options_free(options);
 149         } else
 150                 fmtopts = NULL;
 151         t = sr_transform_new(tmod, fmtopts, sdi);
 152         if (fmtopts)
 153                 g_hash_table_destroy(fmtopts);
 154         g_hash_table_destroy(fmtargs);
 155
 156         return t;
 157 }
 158
 159 /* Get the input stream's list of channels and their types, once. */
 160 static void props_get_channels(struct df_arg_desc *args,
 161         const struct sr_dev_inst *sdi)
 162 {
 163         struct input_stream_props *props;
 164         GSList *l;
 165         const struct sr_channel *ch;
 166
 167         if (!args)
 168                 return;
 169         props = &args->props;
 170         if (props->channels)
 171                 return;
 172
 173         props->channels = g_slist_copy(sr_dev_inst_channels_get(sdi));
 174         if (!props->channels)
 175                 return;
 176         for (l = props->channels; l; l = l->next) {
 177                 ch = l->data;
 178                 if (!ch->enabled)
 179                         continue;
 180                 if (ch->type != SR_CHANNEL_ANALOG)
 181                         continue;
 182                 props->first_analog_channel = ch;
 183                 break;
 184         }
 185 }
 186
 187 static gboolean props_chk_1st_channel(struct df_arg_desc *args,
 188         const struct sr_datafeed_analog *analog)
 189 {
 190         struct sr_channel *ch;
 191
 192         if (!args || !analog || !analog->meaning)
 193                 return FALSE;
 194         ch = g_slist_nth_data(analog->meaning->channels, 0);
 195         if (!ch)
 196                 return FALSE;
 197         return ch == args->props.first_analog_channel;
 198 }
 199
 200 static void props_dump_details(struct df_arg_desc *args)
 201 {
 202         struct input_stream_props *props;
 203         size_t ch_count;
 204         GSList *l;
 205         const struct sr_channel *ch;
 206         const char *type;
 207
 208         if (!args)
 209                 return;
 210         props = &args->props;
 211         if (props->samplerate)
 212                 printf("Samplerate: %" PRIu64 "\n", props->samplerate);
 213         if (props->channels) {
 214                 ch_count = g_slist_length(props->channels);
 215                 printf("Channels: %zu\n", ch_count);
 216                 for (l = props->channels; l; l = l->next) {
 217                         ch = l->data;
 218                         if (ch->type == SR_CHANNEL_ANALOG)
 219                                 type = "analog";
 220                         else
 221                                 type = "logic";
 222                         printf("- %s: %s\n", ch->name, type);
 223                 }
 224         }
 225         if (props->unitsize)
 226                 printf("Logic unitsize: %zu\n", props->unitsize);
 227         if (props->sample_count_logic)
 228                 printf("Logic sample count: %" PRIu64 "\n", props->sample_count_logic);
 229         if (props->sample_count_analog)
 230                 printf("Analog sample count: %" PRIu64 "\n", props->sample_count_analog);
 231         if (props->frame_count)
 232                 printf("Frame count: %" PRIu64 "\n", props->frame_count);
 233         if (props->triggered)
 234                 printf("Trigger count: %" PRIu64 "\n", props->triggered);
 235 }
 236
 237 static void props_cleanup(struct df_arg_desc *args)
 238 {
 239         struct input_stream_props *props;
 240
 241         if (!args)
 242                 return;
 243         props = &args->props;
 244         g_slist_free(props->channels);
 245         props->channels = NULL;
 246         props->first_analog_channel = NULL;
 247 }
 248
 249 void datafeed_in(const struct sr_dev_inst *sdi,
 250                 const struct sr_datafeed_packet *packet, void *cb_data)
 251 {
 252         static const struct sr_output *o = NULL;
 253         static const struct sr_output *oa = NULL;
 254         static uint64_t rcvd_samples_logic = 0;
 255         static uint64_t rcvd_samples_analog = 0;
 256         static uint64_t samplerate = 0;
 257         static int triggered = 0;
 258         static FILE *outfile = NULL;
 259
 260         const struct sr_datafeed_meta *meta;
 261         const struct sr_datafeed_logic *logic;
 262         const struct sr_datafeed_analog *analog;
 263         struct df_arg_desc *df_arg;
 264         int do_props;
 265         struct input_stream_props *props;
 266         struct sr_session *session;
 267         struct sr_config *src;
 268         GSList *l;
 269         GString *out;
 270         GVariant *gvar;
 271         uint64_t end_sample;
 272         uint64_t input_len;
 273         struct sr_dev_driver *driver;
 274
 275         /* Avoid warnings when building without decoder support. */
 276         (void)session;
 277         (void)input_len;
 278
 279         driver = sr_dev_inst_driver_get(sdi);
 280
 281         /* Skip all packets before the first header. */
 282         if (packet->type != SR_DF_HEADER && !o)
 283                 return;
 284
 285         /* Prepare to either process data, or "just" gather properties. */
 286         df_arg = cb_data;
 287         session = df_arg->session;
 288         do_props = df_arg->do_props;
 289         props = &df_arg->props;
 290
 291         switch (packet->type) {
 292         case SR_DF_HEADER:
 293                 g_debug("cli: Received SR_DF_HEADER.");
 294                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
 295                                 &gvar) == SR_OK) {
 296                         samplerate = g_variant_get_uint64(gvar);
 297                         g_variant_unref(gvar);
 298                 }
 299                 if (do_props) {
 300                         /* Setup variables for maximum code path re-use. */
 301                         o = (void *)-1;
 302                         limit_samples = 0;
 303                         /* Start collecting input stream properties. */
 304                         memset(props, 0, sizeof(*props));
 305                         props->samplerate = samplerate;
 306                         props_get_channels(df_arg, sdi);
 307                         break;
 308                 }
 309                 if (!(o = setup_output_format(sdi, &outfile)))
 310                         g_critical("Failed to initialize output module.");
 311
 312                 /* Set up backup analog output module. */
 313                 if (outfile)
 314                         oa = sr_output_new(sr_output_find("analog"), NULL,
 315                                         sdi, NULL);
 316
 317                 rcvd_samples_logic = rcvd_samples_analog = 0;
 318
 319 #ifdef HAVE_SRD
 320                 if (opt_pds) {
 321                         if (samplerate) {
 322                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 323                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
 324                                         g_critical("Failed to configure decode session.");
 325                                         break;
 326                                 }
 327                                 pd_samplerate = samplerate;
 328                         }
 329                         if (srd_session_start(srd_sess) != SRD_OK) {
 330                                 g_critical("Failed to start decode session.");
 331                                 break;
 332                         }
 333                 }
 334 #endif
 335                 break;
 336
 337         case SR_DF_META:
 338                 g_debug("cli: Received SR_DF_META.");
 339                 meta = packet->payload;
 340                 for (l = meta->config; l; l = l->next) {
 341                         src = l->data;
 342                         switch (src->key) {
 343                         case SR_CONF_SAMPLERATE:
 344                                 samplerate = g_variant_get_uint64(src->data);
 345                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
 346                                 if (do_props) {
 347                                         props->samplerate = samplerate;
 348                                         break;
 349                                 }
 350 #ifdef HAVE_SRD
 351                                 if (opt_pds) {
 352                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 353                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
 354                                                 g_critical("Failed to pass samplerate to decoder.");
 355                                         }
 356                                         pd_samplerate = samplerate;
 357                                 }
 358 #endif
 359                                 break;
 360                         case SR_CONF_SAMPLE_INTERVAL:
 361                                 samplerate = g_variant_get_uint64(src->data);
 362                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
 363                                 if (do_props) {
 364                                         props->samplerate = samplerate;
 365                                         break;
 366                                 }
 367                                 break;
 368                         default:
 369                                 /* Unknown metadata is not an error. */
 370                                 break;
 371                         }
 372                 }
 373                 break;
 374
 375         case SR_DF_TRIGGER:
 376                 g_debug("cli: Received SR_DF_TRIGGER.");
 377                 if (do_props) {
 378                         props->triggered++;
 379                         break;
 380                 }
 381                 triggered = 1;
 382                 break;
 383
 384         case SR_DF_LOGIC:
 385                 logic = packet->payload;
 386                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
 387                                 logic->length, logic->unitsize);
 388                 if (logic->length == 0)
 389                         break;
 390
 391                 if (do_props) {
 392                         props_get_channels(df_arg, sdi);
 393                         props->unitsize = logic->unitsize;
 394                         props->sample_count_logic += logic->length / logic->unitsize;
 395                         break;
 396                 }
 397
 398                 /* Don't store any samples until triggered. */
 399                 if (opt_wait_trigger && !triggered)
 400                         break;
 401
 402                 if (limit_samples && rcvd_samples_logic >= limit_samples)
 403                         break;
 404
 405                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
 406                 /* Cut off last packet according to the sample limit. */
 407                 if (limit_samples && end_sample > limit_samples)
 408                         end_sample = limit_samples;
 409                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
 410
 411                 if (opt_pds) {
 412 #ifdef HAVE_SRD
 413                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
 414                                         logic->data, input_len, logic->unitsize) != SRD_OK)
 415                                 sr_session_stop(session);
 416 #endif
 417                 }
 418
 419                 rcvd_samples_logic = end_sample;
 420                 break;
 421
 422         case SR_DF_ANALOG:
 423                 analog = packet->payload;
 424                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
 425                 if (analog->num_samples == 0)
 426                         break;
 427
 428                 if (do_props) {
 429                         /* Only count the first analog channel. */
 430                         props_get_channels(df_arg, sdi);
 431                         if (!props_chk_1st_channel(df_arg, analog))
 432                                 break;
 433                         props->sample_count_analog += analog->num_samples;
 434                         break;
 435                 }
 436
 437                 if (limit_samples && rcvd_samples_analog >= limit_samples)
 438                         break;
 439
 440                 rcvd_samples_analog += analog->num_samples;
 441                 break;
 442
 443         case SR_DF_FRAME_BEGIN:
 444                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
 445                 break;
 446
 447         case SR_DF_FRAME_END:
 448                 g_debug("cli: Received SR_DF_FRAME_END.");
 449                 if (do_props) {
 450                         props->frame_count++;
 451                         break;
 452                 }
 453                 break;
 454
 455         default:
 456                 break;
 457         }
 458
 459         if (!do_props && o && !opt_pds) {
 460                 if (sr_output_send(o, packet, &out) == SR_OK) {
 461                         if (oa && !out) {
 462                                 /*
 463                                  * The user didn't specify an output module,
 464                                  * but needs to see this analog data.
 465                                  */
 466                                 sr_output_send(oa, packet, &out);
 467                         }
 468                         if (outfile && out && out->len > 0) {
 469                                 fwrite(out->str, 1, out->len, outfile);
 470                                 fflush(outfile);
 471                         }
 472                         if (out)
 473                                 g_string_free(out, TRUE);
 474                 }
 475         }
 476
 477         /*
 478          * SR_DF_END needs to be handled after the output module's receive()
 479          * is called, so it can properly clean up that module.
 480          */
 481         if (packet->type == SR_DF_END) {
 482                 g_debug("cli: Received SR_DF_END.");
 483
 484                 if (do_props) {
 485                         props_dump_details(df_arg);
 486                         props_cleanup(df_arg);
 487                         o = NULL;
 488                 }
 489
 490                 if (o)
 491                         sr_output_free(o);
 492                 o = NULL;
 493
 494                 if (oa)
 495                         sr_output_free(oa);
 496                 oa = NULL;
 497
 498                 if (outfile && outfile != stdout)
 499                         fclose(outfile);
 500
 501                 if (limit_samples) {
 502                         if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
 503                                 g_warning("Device only sent %" PRIu64 " samples.",
 504                                            rcvd_samples_logic);
 505                         else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
 506                                 g_warning("Device only sent %" PRIu64 " samples.",
 507                                            rcvd_samples_analog);
 508                 }
 509         }
 510
 511 }
 512
 513 int opt_to_gvar(char *key, char *value, struct sr_config *src)
 514 {
 515         const struct sr_key_info *srci, *srmqi;
 516         double tmp_double, dlow, dhigh;
 517         uint64_t tmp_u64, p, q, low, high, mqflags;
 518         uint32_t mq;
 519         GVariant *rational[2], *range[2], *gtup[2];
 520         GVariantBuilder *vbl;
 521         gboolean tmp_bool;
 522         gchar **keyval;
 523         int ret, i;
 524
 525         if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
 526                 g_critical("Unknown device option '%s'.", (char *) key);
 527                 return -1;
 528         }
 529         src->key = srci->key;
 530
 531         if ((!value || strlen(value) == 0) &&
 532                 (srci->datatype != SR_T_BOOL)) {
 533                 g_critical("Option '%s' needs a value.", (char *)key);
 534                 return -1;
 535         }
 536
 537         ret = 0;
 538         switch (srci->datatype) {
 539         case SR_T_UINT64:
 540                 ret = sr_parse_sizestring(value, &tmp_u64);
 541                 if (ret != 0)
 542                         break;
 543                 src->data = g_variant_new_uint64(tmp_u64);
 544                 break;
 545         case SR_T_INT32:
 546                 ret = sr_parse_sizestring(value, &tmp_u64);
 547                 if (ret != 0)
 548                         break;
 549                 src->data = g_variant_new_int32(tmp_u64);
 550                 break;
 551         case SR_T_STRING:
 552                 src->data = g_variant_new_string(value);
 553                 break;
 554         case SR_T_BOOL:
 555                 if (!value)
 556                         tmp_bool = TRUE;
 557                 else
 558                         tmp_bool = sr_parse_boolstring(value);
 559                 src->data = g_variant_new_boolean(tmp_bool);
 560                 break;
 561         case SR_T_FLOAT:
 562                 tmp_double = strtof(value, NULL);
 563                 src->data = g_variant_new_double(tmp_double);
 564                 break;
 565         case SR_T_RATIONAL_PERIOD:
 566                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
 567                         break;
 568                 rational[0] = g_variant_new_uint64(p);
 569                 rational[1] = g_variant_new_uint64(q);
 570                 src->data = g_variant_new_tuple(rational, 2);
 571                 break;
 572         case SR_T_RATIONAL_VOLT:
 573                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
 574                         break;
 575                 rational[0] = g_variant_new_uint64(p);
 576                 rational[1] = g_variant_new_uint64(q);
 577                 src->data = g_variant_new_tuple(rational, 2);
 578                 break;
 579         case SR_T_UINT64_RANGE:
 580                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
 581                         ret = -1;
 582                         break;
 583                 } else {
 584                         range[0] = g_variant_new_uint64(low);
 585                         range[1] = g_variant_new_uint64(high);
 586                         src->data = g_variant_new_tuple(range, 2);
 587                 }
 588                 break;
 589         case SR_T_DOUBLE_RANGE:
 590                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
 591                         ret = -1;
 592                         break;
 593                 } else {
 594                         range[0] = g_variant_new_double(dlow);
 595                         range[1] = g_variant_new_double(dhigh);
 596                         src->data = g_variant_new_tuple(range, 2);
 597                 }
 598                 break;
 599         case SR_T_KEYVALUE:
 600                 /* Expects the argument to be in the form of key=value. */
 601                 keyval = g_strsplit(value, "=", 2);
 602                 if (!keyval[0] || !keyval[1]) {
 603                         g_strfreev(keyval);
 604                         ret = -1;
 605                         break;
 606                 } else {
 607                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
 608                         g_variant_builder_add(vbl, "{ss}",
 609                                               keyval[0], keyval[1]);
 610                         src->data = g_variant_builder_end(vbl);
 611                         g_strfreev(keyval);
 612                 }
 613                 break;
 614         case SR_T_MQ:
 615                 /*
 616                   Argument is MQ id e.g. ("voltage") optionally followed by one
 617                   or more /<mqflag> e.g. "/ac".
 618                  */
 619                 keyval = g_strsplit(value, "/", 0);
 620                 if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
 621                         g_strfreev(keyval);
 622                         ret = -1;
 623                         break;
 624                 }
 625                 mq = srmqi->key;
 626                 mqflags = 0;
 627                 for (i = 1; keyval[i]; i++) {
 628                         if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
 629                                 ret = -1;
 630                                 break;
 631                         }
 632                         mqflags |= srmqi->key;
 633                 }
 634                 g_strfreev(keyval);
 635                 if (ret != -1) {
 636                         gtup[0] = g_variant_new_uint32(mq);
 637                         gtup[1] = g_variant_new_uint64(mqflags);
 638                         src->data = g_variant_new_tuple(gtup, 2);
 639                 }
 640                 break;
 641         default:
 642                 g_critical("Unknown data type specified for option '%s' "
 643                            "(driver implementation bug?).", key);
 644                 ret = -1;
 645         }
 646
 647         if (ret < 0)
 648                 g_critical("Invalid value: '%s' for option '%s'", value, key);
 649
 650         return ret;
 651 }
 652
 653 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
 654 {
 655         struct sr_config src;
 656         struct sr_channel_group *cg;
 657         GHashTableIter iter;
 658         gpointer key, value;
 659         int ret;
 660
 661         g_hash_table_iter_init(&iter, args);
 662         while (g_hash_table_iter_next(&iter, &key, &value)) {
 663                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
 664                         return ret;
 665                 cg = select_channel_group(sdi);
 666                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
 667                                 src.key, src.data)) != SR_OK) {
 668                         g_critical("Failed to set device option '%s': %s.",
 669                                    (char *)key, sr_strerror(ret));
 670                         return ret;
 671                 }
 672         }
 673
 674         return SR_OK;
 675 }
 676
 677 void run_session(void)
 678 {
 679         struct df_arg_desc df_arg;
 680         GSList *devices, *real_devices, *sd;
 681         GHashTable *devargs;
 682         GVariant *gvar;
 683         struct sr_session *session;
 684         struct sr_trigger *trigger;
 685         struct sr_dev_inst *sdi;
 686         uint64_t min_samples, max_samples;
 687         GArray *drv_opts;
 688         guint i;
 689         int is_demo_dev;
 690         struct sr_dev_driver *driver;
 691         const struct sr_transform *t;
 692         GMainLoop *main_loop;
 693
 694         memset(&df_arg, 0, sizeof(df_arg));
 695         df_arg.do_props = FALSE;
 696
 697         devices = device_scan();
 698         if (!devices) {
 699                 g_critical("No devices found.");
 700                 return;
 701         }
 702
 703         real_devices = NULL;
 704         for (sd = devices; sd; sd = sd->next) {
 705                 sdi = sd->data;
 706
 707                 driver = sr_dev_inst_driver_get(sdi);
 708
 709                 if (!(drv_opts = sr_dev_options(driver, NULL, NULL))) {
 710                         g_critical("Failed to query list of driver options.");
 711                         return;
 712                 }
 713
 714                 is_demo_dev = 0;
 715                 for (i = 0; i < drv_opts->len; i++) {
 716                         if (g_array_index(drv_opts, uint32_t, i) == SR_CONF_DEMO_DEV)
 717                                 is_demo_dev = 1;
 718                 }
 719
 720                 g_array_free(drv_opts, TRUE);
 721
 722                 if (!is_demo_dev)
 723                         real_devices = g_slist_append(real_devices, sdi);
 724         }
 725
 726         if (g_slist_length(devices) > 1) {
 727                 if (g_slist_length(real_devices) != 1) {
 728                         g_critical("sigrok-cli only supports one device for capturing.");
 729                         return;
 730                 } else {
 731                         /* We only have one non-demo device. */
 732                         g_slist_free(devices);
 733                         devices = real_devices;
 734                         real_devices = NULL;
 735                 }
 736         }
 737
 738         /* This is unlikely to happen but it makes static analyzers stop complaining. */
 739         if (!devices) {
 740                 g_critical("No real devices found.");
 741                 return;
 742         }
 743
 744         sdi = devices->data;
 745         g_slist_free(devices);
 746         g_slist_free(real_devices);
 747
 748         sr_session_new(sr_ctx, &session);
 749         df_arg.session = session;
 750         sr_session_datafeed_callback_add(session, datafeed_in, &df_arg);
 751         df_arg.session = NULL;
 752
 753         if (sr_dev_open(sdi) != SR_OK) {
 754                 g_critical("Failed to open device.");
 755                 return;
 756         }
 757
 758         if (sr_session_dev_add(session, sdi) != SR_OK) {
 759                 g_critical("Failed to add device to session.");
 760                 sr_session_destroy(session);
 761                 return;
 762         }
 763
 764         if (opt_config) {
 765                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
 766                         if (set_dev_options(sdi, devargs) != SR_OK)
 767                                 return;
 768                         g_hash_table_destroy(devargs);
 769                 }
 770         }
 771
 772         if (select_channels(sdi) != SR_OK) {
 773                 g_critical("Failed to set channels.");
 774                 sr_session_destroy(session);
 775                 return;
 776         }
 777
 778         trigger = NULL;
 779         if (opt_triggers) {
 780                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
 781                         sr_session_destroy(session);
 782                         return;
 783                 }
 784                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
 785                         sr_session_destroy(session);
 786                         return;
 787                 }
 788         }
 789
 790         if (opt_continuous) {
 791                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
 792                         g_critical("This device does not support continuous sampling.");
 793                         sr_session_destroy(session);
 794                         return;
 795                 }
 796         }
 797
 798         if (opt_time) {
 799                 if (set_limit_time(sdi) != SR_OK) {
 800                         sr_session_destroy(session);
 801                         return;
 802                 }
 803         }
 804
 805         if (opt_samples) {
 806                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
 807                         g_critical("Invalid sample limit '%s'.", opt_samples);
 808                         sr_session_destroy(session);
 809                         return;
 810                 }
 811                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
 812                                 &gvar) == SR_OK) {
 813                         /*
 814                          * The device has no compression, or compression is turned
 815                          * off, and publishes its sample memory size.
 816                          */
 817                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
 818                         g_variant_unref(gvar);
 819                         if (limit_samples < min_samples) {
 820                                 g_critical("The device stores at least %"PRIu64
 821                                                 " samples with the current settings.", min_samples);
 822                         }
 823                         if (limit_samples > max_samples) {
 824                                 g_critical("The device can store only %"PRIu64
 825                                                 " samples with the current settings.", max_samples);
 826                         }
 827                 }
 828                 gvar = g_variant_new_uint64(limit_samples);
 829                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
 830                         g_critical("Failed to configure sample limit.");
 831                         sr_session_destroy(session);
 832                         return;
 833                 }
 834         }
 835
 836         if (opt_frames) {
 837                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
 838                         g_critical("Invalid frame limit '%s'.", opt_frames);
 839                         sr_session_destroy(session);
 840                         return;
 841                 }
 842                 gvar = g_variant_new_uint64(limit_frames);
 843                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
 844                         g_critical("Failed to configure frame limit.");
 845                         sr_session_destroy(session);
 846                         return;
 847                 }
 848         }
 849
 850         if (opt_transform_module) {
 851                 if (!(t = setup_transform_module(sdi)))
 852                         g_critical("Failed to initialize transform module.");
 853         }
 854
 855         main_loop = g_main_loop_new(NULL, FALSE);
 856
 857         sr_session_stopped_callback_set(session,
 858                 (sr_session_stopped_callback)g_main_loop_quit, main_loop);
 859
 860         if (sr_session_start(session) != SR_OK) {
 861                 g_critical("Failed to start session.");
 862                 g_main_loop_unref(main_loop);
 863                 sr_session_destroy(session);
 864                 return;
 865         }
 866
 867         if (opt_continuous)
 868                 add_anykey(session);
 869
 870         g_main_loop_run(main_loop);
 871
 872         if (opt_continuous)
 873                 clear_anykey();
 874
 875         if (trigger)
 876                 sr_trigger_free(trigger);
 877
 878         sr_session_datafeed_callback_remove_all(session);
 879         g_main_loop_unref(main_loop);
 880         sr_session_destroy(session);
 881 }