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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Petteri Aimonen <jpa@sr.mail.kapsi.fi> | |
5 | * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | /* The VCD input module has the following options: | |
22 | * | |
23 | * numchannels: Maximum number of channels to use. The channels are | |
24 | * detected in the same order as they are listed | |
25 | * in the $var sections of the VCD file. | |
26 | * | |
27 | * skip: Allows skipping until given timestamp in the file. | |
28 | * This can speed up analyzing of long captures. | |
29 | * | |
30 | * Value < 0: Skip until first timestamp listed in | |
31 | * the file. (default) | |
32 | * | |
33 | * Value = 0: Do not skip, instead generate samples | |
34 | * beginning from timestamp 0. | |
35 | * | |
36 | * Value > 0: Start at the given timestamp. | |
37 | * | |
38 | * downsample: Divide the samplerate by the given factor. | |
39 | * This can speed up analyzing of long captures. | |
40 | * | |
41 | * compress: Compress idle periods longer than this value. | |
42 | * This can speed up analyzing of long captures. | |
43 | * Default 0 = don't compress. | |
44 | * | |
45 | * Based on Verilog standard IEEE Std 1364-2001 Version C | |
46 | * | |
47 | * Supported features: | |
48 | * - $var with 'wire' and 'reg' types of scalar variables | |
49 | * - $timescale definition for samplerate | |
50 | * - multiple character variable identifiers | |
51 | * | |
52 | * Most important unsupported features: | |
53 | * - vector variables (bit vectors etc.) | |
54 | * - analog, integer and real number variables | |
55 | * - $dumpvars initial value declaration | |
56 | * - $scope namespaces | |
57 | * - more than 64 channels | |
58 | */ | |
59 | ||
60 | #include <config.h> | |
61 | #include <stdlib.h> | |
62 | #include <glib.h> | |
63 | #include <stdio.h> | |
64 | #include <string.h> | |
65 | #include <libsigrok/libsigrok.h> | |
66 | #include "libsigrok-internal.h" | |
67 | ||
68 | #define LOG_PREFIX "input/vcd" | |
69 | ||
70 | #define DEFAULT_NUM_CHANNELS 8 | |
71 | #define CHUNKSIZE (1024 * 1024) | |
72 | ||
73 | struct context { | |
74 | gboolean started; | |
75 | gboolean got_header; | |
76 | uint64_t samplerate; | |
77 | unsigned int maxchannels; | |
78 | unsigned int channelcount; | |
79 | int downsample; | |
80 | unsigned compress; | |
81 | int64_t skip; | |
82 | gboolean skip_until_end; | |
83 | GSList *channels; | |
84 | size_t bytes_per_sample; | |
85 | size_t samples_in_buffer; | |
86 | uint8_t *buffer; | |
87 | uint8_t *current_levels; | |
88 | }; | |
89 | ||
90 | struct vcd_channel { | |
91 | gchar *name; | |
92 | gchar *identifier; | |
93 | }; | |
94 | ||
95 | /* | |
96 | * Reads a single VCD section from input file and parses it to name/contents. | |
97 | * e.g. $timescale 1ps $end => "timescale" "1ps" | |
98 | */ | |
99 | static gboolean parse_section(GString *buf, gchar **name, gchar **contents) | |
100 | { | |
101 | GString *sname, *scontent; | |
102 | gboolean status; | |
103 | unsigned int pos; | |
104 | ||
105 | *name = *contents = NULL; | |
106 | status = FALSE; | |
107 | pos = 0; | |
108 | ||
109 | /* Skip any initial white-space. */ | |
110 | while (pos < buf->len && g_ascii_isspace(buf->str[pos])) | |
111 | pos++; | |
112 | ||
113 | /* Section tag should start with $. */ | |
114 | if (buf->str[pos++] != '$') | |
115 | return FALSE; | |
116 | ||
117 | sname = g_string_sized_new(32); | |
118 | scontent = g_string_sized_new(128); | |
119 | ||
120 | /* Read the section tag. */ | |
121 | while (pos < buf->len && !g_ascii_isspace(buf->str[pos])) | |
122 | g_string_append_c(sname, buf->str[pos++]); | |
123 | ||
124 | /* Skip whitespace before content. */ | |
125 | while (pos < buf->len && g_ascii_isspace(buf->str[pos])) | |
126 | pos++; | |
127 | ||
128 | /* Read the content. */ | |
129 | while (pos < buf->len - 4 && strncmp(buf->str + pos, "$end", 4)) | |
130 | g_string_append_c(scontent, buf->str[pos++]); | |
131 | ||
132 | if (sname->len && pos < buf->len - 4 && !strncmp(buf->str + pos, "$end", 4)) { | |
133 | status = TRUE; | |
134 | pos += 4; | |
135 | while (pos < buf->len && g_ascii_isspace(buf->str[pos])) | |
136 | pos++; | |
137 | g_string_erase(buf, 0, pos); | |
138 | } | |
139 | ||
140 | *name = g_string_free(sname, !status); | |
141 | *contents = g_string_free(scontent, !status); | |
142 | if (*contents) | |
143 | g_strchomp(*contents); | |
144 | ||
145 | return status; | |
146 | } | |
147 | ||
148 | static void free_channel(void *data) | |
149 | { | |
150 | struct vcd_channel *vcd_ch = data; | |
151 | g_free(vcd_ch->name); | |
152 | g_free(vcd_ch->identifier); | |
153 | g_free(vcd_ch); | |
154 | } | |
155 | ||
156 | /* Remove empty parts from an array returned by g_strsplit. */ | |
157 | static void remove_empty_parts(gchar **parts) | |
158 | { | |
159 | gchar **src = parts; | |
160 | gchar **dest = parts; | |
161 | while (*src != NULL) { | |
162 | if (**src != '\0') | |
163 | *dest++ = *src; | |
164 | src++; | |
165 | } | |
166 | ||
167 | *dest = NULL; | |
168 | } | |
169 | ||
170 | /* | |
171 | * Parse VCD header to get values for context structure. | |
172 | * The context structure should be zeroed before calling this. | |
173 | */ | |
174 | static gboolean parse_header(const struct sr_input *in, GString *buf) | |
175 | { | |
176 | struct vcd_channel *vcd_ch; | |
177 | uint64_t p, q; | |
178 | struct context *inc; | |
179 | gboolean status; | |
180 | gchar *name, *contents, **parts; | |
181 | ||
182 | inc = in->priv; | |
183 | name = contents = NULL; | |
184 | status = FALSE; | |
185 | while (parse_section(buf, &name, &contents)) { | |
186 | sr_dbg("Section '%s', contents '%s'.", name, contents); | |
187 | ||
188 | if (g_strcmp0(name, "enddefinitions") == 0) { | |
189 | status = TRUE; | |
190 | break; | |
191 | } else if (g_strcmp0(name, "timescale") == 0) { | |
192 | /* | |
193 | * The standard allows for values 1, 10 or 100 | |
194 | * and units s, ms, us, ns, ps and fs. | |
195 | */ | |
196 | if (sr_parse_period(contents, &p, &q) == SR_OK) { | |
197 | inc->samplerate = q / p; | |
198 | if (q % p != 0) { | |
199 | /* Does not happen unless time value is non-standard */ | |
200 | sr_warn("Inexact rounding of samplerate, %" PRIu64 " / %" PRIu64 " to %" PRIu64 " Hz.", | |
201 | q, p, inc->samplerate); | |
202 | } | |
203 | ||
204 | sr_dbg("Samplerate: %" PRIu64, inc->samplerate); | |
205 | } else { | |
206 | sr_err("Parsing timescale failed."); | |
207 | } | |
208 | } else if (g_strcmp0(name, "var") == 0) { | |
209 | /* Format: $var type size identifier reference $end */ | |
210 | parts = g_strsplit_set(contents, " \r\n\t", 0); | |
211 | remove_empty_parts(parts); | |
212 | ||
213 | if (g_strv_length(parts) != 4) | |
214 | sr_warn("$var section should have 4 items"); | |
215 | else if (g_strcmp0(parts[0], "reg") != 0 && g_strcmp0(parts[0], "wire") != 0) | |
216 | sr_info("Unsupported signal type: '%s'", parts[0]); | |
217 | else if (strtol(parts[1], NULL, 10) != 1) | |
218 | sr_info("Unsupported signal size: '%s'", parts[1]); | |
219 | else if (inc->channelcount >= inc->maxchannels) | |
220 | sr_warn("Skipping '%s' because only %d channels requested.", | |
221 | parts[3], inc->maxchannels); | |
222 | else { | |
223 | sr_info("Channel %d is '%s' identified by '%s'.", | |
224 | inc->channelcount, parts[3], parts[2]); | |
225 | vcd_ch = g_malloc(sizeof(struct vcd_channel)); | |
226 | vcd_ch->identifier = g_strdup(parts[2]); | |
227 | vcd_ch->name = g_strdup(parts[3]); | |
228 | inc->channels = g_slist_append(inc->channels, vcd_ch); | |
229 | inc->channelcount++; | |
230 | } | |
231 | ||
232 | g_strfreev(parts); | |
233 | } | |
234 | ||
235 | g_free(name); | |
236 | name = NULL; | |
237 | g_free(contents); | |
238 | contents = NULL; | |
239 | } | |
240 | g_free(name); | |
241 | g_free(contents); | |
242 | ||
243 | /* | |
244 | * Compute how many bytes each sample will have and initialize the | |
245 | * current levels. The current levels will be updated whenever VCD | |
246 | * has changes. | |
247 | */ | |
248 | inc->bytes_per_sample = (inc->channelcount + 7) / 8; | |
249 | inc->current_levels = g_malloc0(inc->bytes_per_sample); | |
250 | ||
251 | inc->got_header = status; | |
252 | ||
253 | return status; | |
254 | } | |
255 | ||
256 | static int format_match(GHashTable *metadata) | |
257 | { | |
258 | GString *buf, *tmpbuf; | |
259 | gboolean status; | |
260 | gchar *name, *contents; | |
261 | ||
262 | buf = g_hash_table_lookup(metadata, GINT_TO_POINTER(SR_INPUT_META_HEADER)); | |
263 | tmpbuf = g_string_new_len(buf->str, buf->len); | |
264 | ||
265 | /* | |
266 | * If we can parse the first section correctly, | |
267 | * then it is assumed to be a VCD file. | |
268 | */ | |
269 | status = parse_section(tmpbuf, &name, &contents); | |
270 | g_string_free(tmpbuf, TRUE); | |
271 | g_free(name); | |
272 | g_free(contents); | |
273 | ||
274 | return status ? SR_OK : SR_ERR; | |
275 | } | |
276 | ||
277 | /* Send all accumulated bytes from inc->buffer. */ | |
278 | static void send_buffer(const struct sr_input *in) | |
279 | { | |
280 | struct context *inc; | |
281 | struct sr_datafeed_packet packet; | |
282 | struct sr_datafeed_logic logic; | |
283 | ||
284 | inc = in->priv; | |
285 | ||
286 | if (inc->samples_in_buffer == 0) | |
287 | return; | |
288 | ||
289 | packet.type = SR_DF_LOGIC; | |
290 | packet.payload = &logic; | |
291 | logic.unitsize = inc->bytes_per_sample; | |
292 | logic.data = inc->buffer; | |
293 | logic.length = inc->bytes_per_sample * inc->samples_in_buffer; | |
294 | sr_session_send(in->sdi, &packet); | |
295 | inc->samples_in_buffer = 0; | |
296 | } | |
297 | ||
298 | /* | |
299 | * Add N copies of the current sample to buffer. | |
300 | * When the buffer fills up, automatically send it. | |
301 | */ | |
302 | static void add_samples(const struct sr_input *in, size_t count) | |
303 | { | |
304 | struct context *inc; | |
305 | size_t samples_per_chunk; | |
306 | size_t space_left, i; | |
307 | uint8_t *p; | |
308 | ||
309 | inc = in->priv; | |
310 | samples_per_chunk = CHUNKSIZE / inc->bytes_per_sample; | |
311 | ||
312 | while (count) { | |
313 | space_left = samples_per_chunk - inc->samples_in_buffer; | |
314 | ||
315 | if (space_left > count) | |
316 | space_left = count; | |
317 | ||
318 | p = inc->buffer + inc->samples_in_buffer * inc->bytes_per_sample; | |
319 | for (i = 0; i < space_left; i++) { | |
320 | memcpy(p, inc->current_levels, inc->bytes_per_sample); | |
321 | p += inc->bytes_per_sample; | |
322 | inc->samples_in_buffer++; | |
323 | count--; | |
324 | } | |
325 | ||
326 | if (inc->samples_in_buffer == samples_per_chunk) | |
327 | send_buffer(in); | |
328 | } | |
329 | } | |
330 | ||
331 | /* Parse a set of lines from the data section. */ | |
332 | static void parse_contents(const struct sr_input *in, char *data) | |
333 | { | |
334 | struct context *inc; | |
335 | struct vcd_channel *vcd_ch; | |
336 | GSList *l; | |
337 | uint64_t timestamp, prev_timestamp; | |
338 | unsigned int bit, i, j; | |
339 | char **tokens; | |
340 | ||
341 | inc = in->priv; | |
342 | prev_timestamp = 0; | |
343 | ||
344 | /* Read one space-delimited token at a time. */ | |
345 | tokens = g_strsplit_set(data, " \t\r\n", 0); | |
346 | remove_empty_parts(tokens); | |
347 | for (i = 0; tokens[i]; i++) { | |
348 | if (inc->skip_until_end) { | |
349 | if (!strcmp(tokens[i], "$end")) { | |
350 | /* Done with unhandled/unknown section. */ | |
351 | inc->skip_until_end = FALSE; | |
352 | break; | |
353 | } | |
354 | } | |
355 | if (tokens[i][0] == '#' && g_ascii_isdigit(tokens[i][1])) { | |
356 | /* Numeric value beginning with # is a new timestamp value */ | |
357 | timestamp = strtoull(tokens[i] + 1, NULL, 10); | |
358 | ||
359 | if (inc->downsample > 1) | |
360 | timestamp /= inc->downsample; | |
361 | ||
362 | /* | |
363 | * Skip < 0 => skip until first timestamp. | |
364 | * Skip = 0 => don't skip | |
365 | * Skip > 0 => skip until timestamp >= skip. | |
366 | */ | |
367 | if (inc->skip < 0) { | |
368 | inc->skip = timestamp; | |
369 | prev_timestamp = timestamp; | |
370 | } else if (inc->skip > 0 && timestamp < (uint64_t)inc->skip) { | |
371 | prev_timestamp = inc->skip; | |
372 | } else if (timestamp == prev_timestamp) { | |
373 | /* Ignore repeated timestamps (e.g. sigrok outputs these) */ | |
374 | } else { | |
375 | if (inc->compress != 0 && timestamp - prev_timestamp > inc->compress) { | |
376 | /* Compress long idle periods */ | |
377 | prev_timestamp = timestamp - inc->compress; | |
378 | } | |
379 | ||
380 | sr_dbg("New timestamp: %" PRIu64, timestamp); | |
381 | ||
382 | /* Generate samples from prev_timestamp up to timestamp - 1. */ | |
383 | add_samples(in, timestamp - prev_timestamp); | |
384 | prev_timestamp = timestamp; | |
385 | } | |
386 | } else if (tokens[i][0] == '$' && tokens[i][1] != '\0') { | |
387 | /* | |
388 | * This is probably a $dumpvars, $comment or similar. | |
389 | * $dump* contain useful data. | |
390 | */ | |
391 | if (g_strcmp0(tokens[i], "$dumpvars") == 0 | |
392 | || g_strcmp0(tokens[i], "$dumpon") == 0 | |
393 | || g_strcmp0(tokens[i], "$dumpoff") == 0 | |
394 | || g_strcmp0(tokens[i], "$end") == 0) { | |
395 | /* Ignore, parse contents as normally. */ | |
396 | } else { | |
397 | /* Ignore this and future lines until $end. */ | |
398 | inc->skip_until_end = TRUE; | |
399 | break; | |
400 | } | |
401 | } else if (strchr("bBrR", tokens[i][0]) != NULL) { | |
402 | /* A vector value, not supported yet. */ | |
403 | break; | |
404 | } else if (strchr("01xXzZ", tokens[i][0]) != NULL) { | |
405 | /* A new 1-bit sample value */ | |
406 | bit = (tokens[i][0] == '1'); | |
407 | ||
408 | /* | |
409 | * The identifier is either the next character, or, if | |
410 | * there was whitespace after the bit, the next token. | |
411 | */ | |
412 | if (tokens[i][1] == '\0') { | |
413 | if (!tokens[++i]) | |
414 | /* Missing identifier */ | |
415 | continue; | |
416 | } else { | |
417 | for (j = 1; tokens[i][j]; j++) | |
418 | tokens[i][j - 1] = tokens[i][j]; | |
419 | tokens[i][j - 1] = '\0'; | |
420 | } | |
421 | ||
422 | for (j = 0, l = inc->channels; j < inc->channelcount && l; j++, l = l->next) { | |
423 | vcd_ch = l->data; | |
424 | if (g_strcmp0(tokens[i], vcd_ch->identifier) == 0) { | |
425 | /* Found our channel */ | |
426 | size_t byte_idx = (j / 8); | |
427 | size_t bit_idx = j - 8 * byte_idx; | |
428 | if (bit) | |
429 | inc->current_levels[byte_idx] |= (uint8_t)1 << bit_idx; | |
430 | else | |
431 | inc->current_levels[byte_idx] &= ~((uint8_t)1 << bit_idx); | |
432 | break; | |
433 | } | |
434 | } | |
435 | if (j == inc->channelcount) | |
436 | sr_dbg("Did not find channel for identifier '%s'.", tokens[i]); | |
437 | } else { | |
438 | sr_warn("Skipping unknown token '%s'.", tokens[i]); | |
439 | } | |
440 | } | |
441 | g_strfreev(tokens); | |
442 | } | |
443 | ||
444 | static int init(struct sr_input *in, GHashTable *options) | |
445 | { | |
446 | int num_channels, i; | |
447 | char name[16]; | |
448 | struct context *inc; | |
449 | ||
450 | num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels")); | |
451 | if (num_channels < 1) { | |
452 | sr_err("Invalid value for numchannels: must be at least 1."); | |
453 | return SR_ERR_ARG; | |
454 | } | |
455 | inc = in->priv = g_malloc0(sizeof(struct context)); | |
456 | inc->maxchannels = num_channels; | |
457 | ||
458 | inc->downsample = g_variant_get_int32(g_hash_table_lookup(options, "downsample")); | |
459 | if (inc->downsample < 1) | |
460 | inc->downsample = 1; | |
461 | ||
462 | inc->compress = g_variant_get_int32(g_hash_table_lookup(options, "compress")); | |
463 | inc->skip = g_variant_get_int32(g_hash_table_lookup(options, "skip")); | |
464 | inc->skip /= inc->downsample; | |
465 | ||
466 | in->sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
467 | in->priv = inc; | |
468 | ||
469 | inc->buffer = g_malloc(CHUNKSIZE); | |
470 | ||
471 | for (i = 0; i < num_channels; i++) { | |
472 | snprintf(name, 16, "%d", i); | |
473 | sr_channel_new(in->sdi, i, SR_CHANNEL_LOGIC, TRUE, name); | |
474 | } | |
475 | ||
476 | return SR_OK; | |
477 | } | |
478 | ||
479 | static gboolean have_header(GString *buf) | |
480 | { | |
481 | unsigned int pos; | |
482 | char *p; | |
483 | ||
484 | if (!(p = g_strstr_len(buf->str, buf->len, "$enddefinitions"))) | |
485 | return FALSE; | |
486 | pos = p - buf->str + 15; | |
487 | while (pos < buf->len - 4 && g_ascii_isspace(buf->str[pos])) | |
488 | pos++; | |
489 | if (!strncmp(buf->str + pos, "$end", 4)) | |
490 | return TRUE; | |
491 | ||
492 | return FALSE; | |
493 | } | |
494 | ||
495 | static int process_buffer(struct sr_input *in) | |
496 | { | |
497 | struct sr_datafeed_packet packet; | |
498 | struct sr_datafeed_meta meta; | |
499 | struct sr_config *src; | |
500 | struct context *inc; | |
501 | uint64_t samplerate; | |
502 | char *p; | |
503 | ||
504 | inc = in->priv; | |
505 | if (!inc->started) { | |
506 | std_session_send_df_header(in->sdi, LOG_PREFIX); | |
507 | ||
508 | packet.type = SR_DF_META; | |
509 | packet.payload = &meta; | |
510 | samplerate = inc->samplerate / inc->downsample; | |
511 | src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(samplerate)); | |
512 | meta.config = g_slist_append(NULL, src); | |
513 | sr_session_send(in->sdi, &packet); | |
514 | g_slist_free(meta.config); | |
515 | sr_config_free(src); | |
516 | ||
517 | inc->started = TRUE; | |
518 | } | |
519 | ||
520 | while ((p = g_strrstr_len(in->buf->str, in->buf->len, "\n"))) { | |
521 | *p = '\0'; | |
522 | g_strstrip(in->buf->str); | |
523 | if (in->buf->str[0] != '\0') | |
524 | parse_contents(in, in->buf->str); | |
525 | g_string_erase(in->buf, 0, p - in->buf->str + 1); | |
526 | } | |
527 | ||
528 | return SR_OK; | |
529 | } | |
530 | ||
531 | static int receive(struct sr_input *in, GString *buf) | |
532 | { | |
533 | struct context *inc; | |
534 | int ret; | |
535 | ||
536 | g_string_append_len(in->buf, buf->str, buf->len); | |
537 | ||
538 | inc = in->priv; | |
539 | if (!inc->got_header) { | |
540 | if (!have_header(in->buf)) | |
541 | return SR_OK; | |
542 | if (!parse_header(in, in->buf)) | |
543 | /* There was a header in there, but it was malformed. */ | |
544 | return SR_ERR; | |
545 | ||
546 | in->sdi_ready = TRUE; | |
547 | /* sdi is ready, notify frontend. */ | |
548 | return SR_OK; | |
549 | } | |
550 | ||
551 | ret = process_buffer(in); | |
552 | ||
553 | return ret; | |
554 | } | |
555 | ||
556 | static int end(struct sr_input *in) | |
557 | { | |
558 | struct sr_datafeed_packet packet; | |
559 | struct context *inc; | |
560 | int ret; | |
561 | ||
562 | inc = in->priv; | |
563 | ||
564 | if (in->sdi_ready) | |
565 | ret = process_buffer(in); | |
566 | else | |
567 | ret = SR_OK; | |
568 | ||
569 | /* Send any samples that haven't been sent yet. */ | |
570 | send_buffer(in); | |
571 | ||
572 | if (inc->started) { | |
573 | packet.type = SR_DF_END; | |
574 | sr_session_send(in->sdi, &packet); | |
575 | } | |
576 | ||
577 | return ret; | |
578 | } | |
579 | ||
580 | static void cleanup(struct sr_input *in) | |
581 | { | |
582 | struct context *inc; | |
583 | ||
584 | inc = in->priv; | |
585 | g_slist_free_full(inc->channels, free_channel); | |
586 | g_free(inc->buffer); | |
587 | inc->buffer = NULL; | |
588 | g_free(inc->current_levels); | |
589 | inc->current_levels = NULL; | |
590 | } | |
591 | ||
592 | static struct sr_option options[] = { | |
593 | { "numchannels", "Number of channels", "Number of channels", NULL, NULL }, | |
594 | { "skip", "Skip", "Skip until timestamp", NULL, NULL }, | |
595 | { "downsample", "Downsample", "Divide samplerate by factor", NULL, NULL }, | |
596 | { "compress", "Compress", "Compress idle periods longer than this value", NULL, NULL }, | |
597 | ALL_ZERO | |
598 | }; | |
599 | ||
600 | static const struct sr_option *get_options(void) | |
601 | { | |
602 | if (!options[0].def) { | |
603 | options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS)); | |
604 | options[1].def = g_variant_ref_sink(g_variant_new_int32(-1)); | |
605 | options[2].def = g_variant_ref_sink(g_variant_new_int32(1)); | |
606 | options[3].def = g_variant_ref_sink(g_variant_new_int32(0)); | |
607 | } | |
608 | ||
609 | return options; | |
610 | } | |
611 | ||
612 | SR_PRIV struct sr_input_module input_vcd = { | |
613 | .id = "vcd", | |
614 | .name = "VCD", | |
615 | .desc = "Value Change Dump", | |
616 | .exts = (const char*[]){"vcd", NULL}, | |
617 | .metadata = { SR_INPUT_META_HEADER | SR_INPUT_META_REQUIRED }, | |
618 | .options = get_options, | |
619 | .format_match = format_match, | |
620 | .init = init, | |
621 | .receive = receive, | |
622 | .end = end, | |
623 | .cleanup = cleanup, | |
624 | }; |