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Commit | Line | Data |
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99eaa206 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
99eaa206 | 3 | * |
0157808d | 4 | * Copyright (C) 2012 Petteri Aimonen <jpa@sr.mail.kapsi.fi> |
7db06394 | 5 | * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> |
99eaa206 PA |
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 | ||
0157808d PA |
21 | /* The VCD input module has the following options: |
22 | * | |
ba7dd8bb | 23 | * numchannels: Maximum number of channels to use. The channels are |
0157808d PA |
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 | * | |
6b7ace48 PA |
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 | * | |
0157808d PA |
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 | |
8be87469 | 56 | * - $scope namespaces |
ba7dd8bb | 57 | * - more than 64 channels |
0157808d PA |
58 | */ |
59 | ||
99eaa206 PA |
60 | #include <stdlib.h> |
61 | #include <glib.h> | |
62 | #include <stdio.h> | |
61a429c9 | 63 | #include <string.h> |
99eaa206 PA |
64 | #include "libsigrok.h" |
65 | #include "libsigrok-internal.h" | |
66 | ||
3544f848 | 67 | #define LOG_PREFIX "input/vcd" |
99eaa206 | 68 | |
3f239f08 | 69 | #define DEFAULT_NUM_CHANNELS 8 |
e4c8a4d7 BV |
70 | #define CHUNKSIZE 1024 |
71 | ||
72 | struct context { | |
c10ef17c | 73 | gboolean started; |
7db06394 | 74 | gboolean got_header; |
e4c8a4d7 | 75 | uint64_t samplerate; |
7db06394 BV |
76 | unsigned int maxchannels; |
77 | unsigned int channelcount; | |
e4c8a4d7 BV |
78 | int downsample; |
79 | unsigned compress; | |
80 | int64_t skip; | |
7db06394 | 81 | gboolean skip_until_end; |
ba7dd8bb | 82 | GSList *channels; |
e4c8a4d7 BV |
83 | }; |
84 | ||
ba7dd8bb | 85 | struct vcd_channel { |
e4c8a4d7 BV |
86 | gchar *name; |
87 | gchar *identifier; | |
88 | }; | |
89 | ||
99eaa206 | 90 | |
e4c8a4d7 | 91 | /* |
7db06394 | 92 | * Reads a single VCD section from input file and parses it to name/contents. |
99eaa206 PA |
93 | * e.g. $timescale 1ps $end => "timescale" "1ps" |
94 | */ | |
7db06394 | 95 | static gboolean parse_section(GString *buf, gchar **name, gchar **contents) |
99eaa206 | 96 | { |
7db06394 | 97 | GString *sname, *scontent; |
99eaa206 | 98 | gboolean status; |
7db06394 BV |
99 | unsigned int pos; |
100 | ||
101 | *name = *contents = NULL; | |
102 | status = FALSE; | |
103 | pos = 0; | |
cd1b0e8f | 104 | |
7db06394 BV |
105 | /* Skip any initial white-space. */ |
106 | while (pos < buf->len && g_ascii_isspace(buf->str[pos])) | |
107 | pos++; | |
cd1b0e8f | 108 | |
99eaa206 | 109 | /* Section tag should start with $. */ |
7db06394 | 110 | if (buf->str[pos++] != '$') |
99eaa206 | 111 | return FALSE; |
cd1b0e8f | 112 | |
99eaa206 | 113 | sname = g_string_sized_new(32); |
7db06394 BV |
114 | scontent = g_string_sized_new(128); |
115 | ||
116 | /* Read the section tag. */ | |
117 | while (pos < buf->len && !g_ascii_isspace(buf->str[pos])) | |
118 | g_string_append_c(sname, buf->str[pos++]); | |
119 | ||
120 | /* Skip whitespace before content. */ | |
121 | while (pos < buf->len && g_ascii_isspace(buf->str[pos])) | |
122 | pos++; | |
123 | ||
124 | /* Read the content. */ | |
125 | while (pos < buf->len - 4 && strncmp(buf->str + pos, "$end", 4)) | |
126 | g_string_append_c(scontent, buf->str[pos++]); | |
127 | ||
128 | if (sname->len && pos < buf->len - 4 && !strncmp(buf->str + pos, "$end", 4)) { | |
129 | status = TRUE; | |
130 | pos += 4; | |
131 | while (pos < buf->len && g_ascii_isspace(buf->str[pos])) | |
132 | pos++; | |
133 | g_string_erase(buf, 0, pos); | |
134 | } | |
99eaa206 | 135 | |
99eaa206 | 136 | *name = g_string_free(sname, !status); |
7db06394 BV |
137 | *contents = g_string_free(scontent, !status); |
138 | if (*contents) | |
139 | g_strchomp(*contents); | |
140 | ||
99eaa206 PA |
141 | return status; |
142 | } | |
143 | ||
ba7dd8bb | 144 | static void free_channel(void *data) |
db9679af | 145 | { |
ba7dd8bb UH |
146 | struct vcd_channel *vcd_ch = data; |
147 | g_free(vcd_ch->name); | |
148 | g_free(vcd_ch->identifier); | |
149 | g_free(vcd_ch); | |
db9679af ML |
150 | } |
151 | ||
99eaa206 PA |
152 | /* Remove empty parts from an array returned by g_strsplit. */ |
153 | static void remove_empty_parts(gchar **parts) | |
154 | { | |
155 | gchar **src = parts; | |
156 | gchar **dest = parts; | |
e4c8a4d7 | 157 | while (*src != NULL) { |
99eaa206 | 158 | if (**src != '\0') |
99eaa206 | 159 | *dest++ = *src; |
99eaa206 PA |
160 | src++; |
161 | } | |
cd1b0e8f | 162 | |
99eaa206 PA |
163 | *dest = NULL; |
164 | } | |
165 | ||
e4c8a4d7 BV |
166 | /* |
167 | * Parse VCD header to get values for context structure. | |
99eaa206 PA |
168 | * The context structure should be zeroed before calling this. |
169 | */ | |
7db06394 | 170 | static gboolean parse_header(const struct sr_input *in, GString *buf) |
99eaa206 | 171 | { |
ba7dd8bb | 172 | struct vcd_channel *vcd_ch; |
7db06394 BV |
173 | uint64_t p, q; |
174 | struct context *inc; | |
175 | gboolean status; | |
176 | gchar *name, *contents, **parts; | |
99eaa206 | 177 | |
7db06394 BV |
178 | inc = in->priv; |
179 | name = contents = NULL; | |
180 | status = FALSE; | |
181 | while (parse_section(buf, &name, &contents)) { | |
99eaa206 | 182 | sr_dbg("Section '%s', contents '%s'.", name, contents); |
cd1b0e8f | 183 | |
e4c8a4d7 | 184 | if (g_strcmp0(name, "enddefinitions") == 0) { |
99eaa206 PA |
185 | status = TRUE; |
186 | break; | |
e4c8a4d7 BV |
187 | } else if (g_strcmp0(name, "timescale") == 0) { |
188 | /* | |
189 | * The standard allows for values 1, 10 or 100 | |
190 | * and units s, ms, us, ns, ps and fs. | |
7db06394 | 191 | */ |
e4c8a4d7 | 192 | if (sr_parse_period(contents, &p, &q) == SR_OK) { |
7db06394 | 193 | inc->samplerate = q / p; |
e4c8a4d7 | 194 | if (q % p != 0) { |
99eaa206 | 195 | /* Does not happen unless time value is non-standard */ |
0157808d | 196 | sr_warn("Inexact rounding of samplerate, %" PRIu64 " / %" PRIu64 " to %" PRIu64 " Hz.", |
7db06394 | 197 | q, p, inc->samplerate); |
99eaa206 | 198 | } |
cd1b0e8f | 199 | |
7db06394 | 200 | sr_dbg("Samplerate: %" PRIu64, inc->samplerate); |
e4c8a4d7 | 201 | } else { |
99eaa206 PA |
202 | sr_err("Parsing timescale failed."); |
203 | } | |
e4c8a4d7 | 204 | } else if (g_strcmp0(name, "var") == 0) { |
99eaa206 | 205 | /* Format: $var type size identifier reference $end */ |
7db06394 | 206 | parts = g_strsplit_set(contents, " \r\n\t", 0); |
99eaa206 | 207 | remove_empty_parts(parts); |
cd1b0e8f | 208 | |
99eaa206 | 209 | if (g_strv_length(parts) != 4) |
8be87469 | 210 | sr_warn("$var section should have 4 items"); |
99eaa206 | 211 | else if (g_strcmp0(parts[0], "reg") != 0 && g_strcmp0(parts[0], "wire") != 0) |
8be87469 | 212 | sr_info("Unsupported signal type: '%s'", parts[0]); |
99eaa206 | 213 | else if (strtol(parts[1], NULL, 10) != 1) |
8be87469 | 214 | sr_info("Unsupported signal size: '%s'", parts[1]); |
7db06394 BV |
215 | else if (inc->channelcount >= inc->maxchannels) |
216 | sr_warn("Skipping '%s' because only %d channels requested.", | |
217 | parts[3], inc->maxchannels); | |
e4c8a4d7 | 218 | else { |
7db06394 BV |
219 | sr_info("Channel %d is '%s' identified by '%s'.", |
220 | inc->channelcount, parts[3], parts[2]); | |
ba7dd8bb UH |
221 | vcd_ch = g_malloc(sizeof(struct vcd_channel)); |
222 | vcd_ch->identifier = g_strdup(parts[2]); | |
223 | vcd_ch->name = g_strdup(parts[3]); | |
7db06394 BV |
224 | inc->channels = g_slist_append(inc->channels, vcd_ch); |
225 | inc->channelcount++; | |
99eaa206 | 226 | } |
cd1b0e8f | 227 | |
99eaa206 PA |
228 | g_strfreev(parts); |
229 | } | |
cd1b0e8f | 230 | |
99eaa206 PA |
231 | g_free(name); name = NULL; |
232 | g_free(contents); contents = NULL; | |
233 | } | |
99eaa206 PA |
234 | g_free(name); |
235 | g_free(contents); | |
cd1b0e8f | 236 | |
7db06394 BV |
237 | inc->got_header = status; |
238 | ||
99eaa206 PA |
239 | return status; |
240 | } | |
241 | ||
7db06394 | 242 | static int format_match(GHashTable *metadata) |
99eaa206 | 243 | { |
7db06394 | 244 | GString *buf, *tmpbuf; |
99eaa206 | 245 | gboolean status; |
7db06394 | 246 | gchar *name, *contents; |
cd1b0e8f | 247 | |
7db06394 BV |
248 | buf = g_hash_table_lookup(metadata, GINT_TO_POINTER(SR_INPUT_META_HEADER)); |
249 | tmpbuf = g_string_new_len(buf->str, buf->len); | |
99eaa206 | 250 | |
e4c8a4d7 BV |
251 | /* |
252 | * If we can parse the first section correctly, | |
99eaa206 PA |
253 | * then it is assumed to be a VCD file. |
254 | */ | |
7db06394 BV |
255 | status = parse_section(tmpbuf, &name, &contents); |
256 | g_string_free(tmpbuf, TRUE); | |
99eaa206 PA |
257 | g_free(name); |
258 | g_free(contents); | |
cd1b0e8f | 259 | |
4f979115 | 260 | return status ? SR_OK : SR_ERR; |
99eaa206 PA |
261 | } |
262 | ||
61a429c9 PA |
263 | /* Send N samples of the given value. */ |
264 | static void send_samples(const struct sr_dev_inst *sdi, uint64_t sample, uint64_t count) | |
265 | { | |
266 | struct sr_datafeed_packet packet; | |
267 | struct sr_datafeed_logic logic; | |
268 | uint64_t buffer[CHUNKSIZE]; | |
269 | uint64_t i; | |
270 | unsigned chunksize = CHUNKSIZE; | |
cd1b0e8f | 271 | |
61a429c9 PA |
272 | if (count < chunksize) |
273 | chunksize = count; | |
274 | ||
275 | for (i = 0; i < chunksize; i++) | |
61a429c9 | 276 | buffer[i] = sample; |
cd1b0e8f | 277 | |
61a429c9 | 278 | packet.type = SR_DF_LOGIC; |
cd1b0e8f | 279 | packet.payload = &logic; |
61a429c9 PA |
280 | logic.unitsize = sizeof(uint64_t); |
281 | logic.data = buffer; | |
cd1b0e8f | 282 | |
e4c8a4d7 | 283 | while (count) { |
61a429c9 PA |
284 | if (count < chunksize) |
285 | chunksize = count; | |
cd1b0e8f | 286 | |
61a429c9 | 287 | logic.length = sizeof(uint64_t) * chunksize; |
cd1b0e8f | 288 | |
61a429c9 PA |
289 | sr_session_send(sdi, &packet); |
290 | count -= chunksize; | |
291 | } | |
292 | } | |
293 | ||
7db06394 BV |
294 | /* Parse a set of lines from the data section. */ |
295 | static void parse_contents(const struct sr_input *in, char *data) | |
61a429c9 | 296 | { |
7db06394 BV |
297 | struct context *inc; |
298 | struct vcd_channel *vcd_ch; | |
299 | GSList *l; | |
300 | uint64_t timestamp, prev_timestamp, prev_values; | |
301 | unsigned int bit, i, j; | |
302 | char **tokens; | |
cd1b0e8f | 303 | |
7db06394 BV |
304 | inc = in->priv; |
305 | prev_timestamp = prev_values = 0; | |
cd1b0e8f | 306 | |
61a429c9 | 307 | /* Read one space-delimited token at a time. */ |
7db06394 BV |
308 | tokens = g_strsplit_set(data, " \t\r\n", 0); |
309 | remove_empty_parts(tokens); | |
310 | for (i = 0; tokens[i]; i++) { | |
311 | if (inc->skip_until_end) { | |
312 | if (!strcmp(tokens[i], "$end")) { | |
313 | /* Done with unhandled/unknown section. */ | |
314 | inc->skip_until_end = FALSE; | |
315 | break; | |
316 | } | |
317 | } | |
318 | if (tokens[i][0] == '#' && g_ascii_isdigit(tokens[i][1])) { | |
61a429c9 | 319 | /* Numeric value beginning with # is a new timestamp value */ |
7db06394 | 320 | timestamp = strtoull(tokens[i] + 1, NULL, 10); |
cd1b0e8f | 321 | |
7db06394 BV |
322 | if (inc->downsample > 1) |
323 | timestamp /= inc->downsample; | |
cd1b0e8f | 324 | |
e4c8a4d7 BV |
325 | /* |
326 | * Skip < 0 => skip until first timestamp. | |
0157808d PA |
327 | * Skip = 0 => don't skip |
328 | * Skip > 0 => skip until timestamp >= skip. | |
329 | */ | |
7db06394 BV |
330 | if (inc->skip < 0) { |
331 | inc->skip = timestamp; | |
8be87469 | 332 | prev_timestamp = timestamp; |
7db06394 BV |
333 | } else if (inc->skip > 0 && timestamp < (uint64_t)inc->skip) { |
334 | prev_timestamp = inc->skip; | |
335 | } else if (timestamp == prev_timestamp) { | |
8be87469 | 336 | /* Ignore repeated timestamps (e.g. sigrok outputs these) */ |
7db06394 BV |
337 | } else { |
338 | if (inc->compress != 0 && timestamp - prev_timestamp > inc->compress) { | |
6b7ace48 | 339 | /* Compress long idle periods */ |
7db06394 | 340 | prev_timestamp = timestamp - inc->compress; |
6b7ace48 | 341 | } |
cd1b0e8f | 342 | |
61a429c9 | 343 | sr_dbg("New timestamp: %" PRIu64, timestamp); |
cd1b0e8f | 344 | |
61a429c9 | 345 | /* Generate samples from prev_timestamp up to timestamp - 1. */ |
7db06394 | 346 | send_samples(in->sdi, prev_values, timestamp - prev_timestamp); |
0157808d | 347 | prev_timestamp = timestamp; |
61a429c9 | 348 | } |
7db06394 BV |
349 | } else if (tokens[i][0] == '$' && tokens[i][1] != '\0') { |
350 | /* | |
351 | * This is probably a $dumpvars, $comment or similar. | |
352 | * $dump* contain useful data. | |
353 | */ | |
354 | if (g_strcmp0(tokens[i], "$dumpvars") == 0 | |
355 | || g_strcmp0(tokens[i], "$dumpon") == 0 | |
356 | || g_strcmp0(tokens[i], "$dumpoff") == 0 | |
357 | || g_strcmp0(tokens[i], "$end") == 0) { | |
8be87469 | 358 | /* Ignore, parse contents as normally. */ |
e4c8a4d7 | 359 | } else { |
7db06394 BV |
360 | /* Ignore this and future lines until $end. */ |
361 | inc->skip_until_end = TRUE; | |
362 | break; | |
8be87469 | 363 | } |
7db06394 BV |
364 | } else if (strchr("bBrR", tokens[i][0]) != NULL) { |
365 | /* A vector value, not supported yet. */ | |
366 | break; | |
367 | } else if (strchr("01xXzZ", tokens[i][0]) != NULL) { | |
61a429c9 | 368 | /* A new 1-bit sample value */ |
7db06394 BV |
369 | bit = (tokens[i][0] == '1'); |
370 | ||
371 | /* | |
372 | * The identifier is either the next character, or, if | |
373 | * there was whitespace after the bit, the next token. | |
374 | */ | |
375 | if (tokens[i][1] == '\0') { | |
376 | if (!tokens[++i]) | |
377 | /* Missing identifier */ | |
378 | continue; | |
379 | } else { | |
380 | for (j = 1; tokens[i][j]; j++) | |
381 | tokens[i][j - 1] = tokens[i][j]; | |
382 | tokens[i][j - 1] = '\0'; | |
61a429c9 | 383 | } |
cd1b0e8f | 384 | |
7db06394 | 385 | for (j = 0, l = inc->channels; j < inc->channelcount && l; j++, l = l->next) { |
ba7dd8bb | 386 | vcd_ch = l->data; |
7db06394 | 387 | if (g_strcmp0(tokens[i], vcd_ch->identifier) == 0) { |
ba7dd8bb | 388 | /* Found our channel */ |
61a429c9 | 389 | if (bit) |
7db06394 | 390 | prev_values |= (uint64_t)1 << j; |
61a429c9 | 391 | else |
7db06394 | 392 | prev_values &= ~((uint64_t)1 << j); |
61a429c9 PA |
393 | break; |
394 | } | |
395 | } | |
7db06394 BV |
396 | if (j == inc->channelcount) |
397 | sr_dbg("Did not find channel for identifier '%s'.", tokens[i]); | |
e4c8a4d7 | 398 | } else { |
7db06394 | 399 | sr_warn("Skipping unknown token '%s'.", tokens[i]); |
8be87469 | 400 | } |
7db06394 BV |
401 | } |
402 | g_strfreev(tokens); | |
403 | } | |
404 | ||
405 | static int init(struct sr_input *in, GHashTable *options) | |
406 | { | |
407 | struct sr_channel *ch; | |
408 | int num_channels, i; | |
409 | char name[16]; | |
410 | struct context *inc; | |
411 | ||
7db06394 BV |
412 | num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels")); |
413 | if (num_channels < 1) { | |
414 | sr_err("Invalid value for numchannels: must be at least 1."); | |
415 | return SR_ERR_ARG; | |
416 | } | |
417 | if (num_channels > 64) { | |
418 | sr_err("No more than 64 channels supported."); | |
419 | return SR_ERR_ARG; | |
420 | } | |
d0181813 | 421 | inc = in->priv = g_malloc0(sizeof(struct context)); |
7db06394 | 422 | inc->maxchannels = num_channels; |
cd1b0e8f | 423 | |
7db06394 BV |
424 | inc->downsample = g_variant_get_int32(g_hash_table_lookup(options, "downsample")); |
425 | if (inc->downsample < 1) | |
426 | inc->downsample = 1; | |
427 | ||
428 | inc->compress = g_variant_get_int32(g_hash_table_lookup(options, "compress")); | |
429 | inc->skip = g_variant_get_int32(g_hash_table_lookup(options, "skip")); | |
430 | inc->skip /= inc->downsample; | |
431 | ||
aac29cc1 | 432 | in->sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
7db06394 BV |
433 | in->priv = inc; |
434 | ||
435 | for (i = 0; i < num_channels; i++) { | |
436 | snprintf(name, 16, "%d", i); | |
437 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name); | |
438 | in->sdi->channels = g_slist_append(in->sdi->channels, ch); | |
61a429c9 | 439 | } |
cd1b0e8f | 440 | |
7db06394 | 441 | return SR_OK; |
61a429c9 PA |
442 | } |
443 | ||
7db06394 BV |
444 | static gboolean have_header(GString *buf) |
445 | { | |
446 | unsigned int pos; | |
447 | char *p; | |
448 | ||
449 | if (!(p = g_strstr_len(buf->str, buf->len, "$enddefinitions"))) | |
450 | return FALSE; | |
451 | pos = p - buf->str + 15; | |
452 | while (pos < buf->len - 4 && g_ascii_isspace(buf->str[pos])) | |
453 | pos++; | |
454 | if (!strncmp(buf->str + pos, "$end", 4)) | |
455 | return TRUE; | |
456 | ||
457 | return FALSE; | |
458 | } | |
459 | ||
7066fd46 | 460 | static int process_buffer(struct sr_input *in) |
99eaa206 | 461 | { |
99eaa206 | 462 | struct sr_datafeed_packet packet; |
2df1e819 BV |
463 | struct sr_datafeed_meta meta; |
464 | struct sr_config *src; | |
7db06394 | 465 | struct context *inc; |
2df1e819 | 466 | uint64_t samplerate; |
7db06394 BV |
467 | char *p; |
468 | ||
7db06394 | 469 | inc = in->priv; |
d0181813 | 470 | if (!inc->started) { |
7db06394 | 471 | std_session_send_df_header(in->sdi, LOG_PREFIX); |
99eaa206 | 472 | |
7db06394 BV |
473 | packet.type = SR_DF_META; |
474 | packet.payload = &meta; | |
475 | samplerate = inc->samplerate / inc->downsample; | |
476 | src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(samplerate)); | |
477 | meta.config = g_slist_append(NULL, src); | |
478 | sr_session_send(in->sdi, &packet); | |
479 | sr_config_free(src); | |
d0181813 BV |
480 | |
481 | inc->started = TRUE; | |
99eaa206 PA |
482 | } |
483 | ||
7db06394 BV |
484 | while ((p = g_strrstr_len(in->buf->str, in->buf->len, "\n"))) { |
485 | *p = '\0'; | |
486 | g_strstrip(in->buf->str); | |
487 | if (in->buf->str[0] != '\0') | |
488 | parse_contents(in, in->buf->str); | |
489 | g_string_erase(in->buf, 0, p - in->buf->str + 1); | |
490 | } | |
99eaa206 | 491 | |
7db06394 BV |
492 | return SR_OK; |
493 | } | |
cd1b0e8f | 494 | |
7066fd46 BV |
495 | static int receive(struct sr_input *in, GString *buf) |
496 | { | |
497 | struct context *inc; | |
498 | int ret; | |
499 | ||
500 | g_string_append_len(in->buf, buf->str, buf->len); | |
501 | ||
502 | inc = in->priv; | |
503 | if (!inc->got_header) { | |
504 | if (!have_header(in->buf)) | |
505 | return SR_OK; | |
506 | if (!parse_header(in, in->buf) != SR_OK) | |
507 | /* There was a header in there, but it was malformed. */ | |
508 | return SR_ERR; | |
509 | ||
510 | in->sdi_ready = TRUE; | |
511 | /* sdi is ready, notify frontend. */ | |
512 | return SR_OK; | |
513 | } | |
514 | ||
515 | ret = process_buffer(in); | |
516 | ||
517 | return ret; | |
518 | } | |
519 | ||
520 | static int end(struct sr_input *in) | |
7db06394 | 521 | { |
c10ef17c | 522 | struct sr_datafeed_packet packet; |
7db06394 | 523 | struct context *inc; |
7066fd46 BV |
524 | int ret; |
525 | ||
526 | if (in->sdi_ready) | |
527 | ret = process_buffer(in); | |
528 | else | |
529 | ret = SR_OK; | |
99eaa206 | 530 | |
7db06394 | 531 | inc = in->priv; |
c10ef17c | 532 | if (inc->started) { |
c10ef17c BV |
533 | packet.type = SR_DF_END; |
534 | sr_session_send(in->sdi, &packet); | |
535 | } | |
536 | ||
7066fd46 BV |
537 | return ret; |
538 | } | |
539 | ||
d5cc282f | 540 | static void cleanup(struct sr_input *in) |
7066fd46 BV |
541 | { |
542 | struct context *inc; | |
543 | ||
544 | inc = in->priv; | |
7db06394 | 545 | g_slist_free_full(inc->channels, free_channel); |
99eaa206 PA |
546 | } |
547 | ||
7db06394 | 548 | static struct sr_option options[] = { |
5e83cd74 | 549 | { "numchannels", "Number of channels", "Number of channels", NULL, NULL }, |
7db06394 BV |
550 | { "skip", "Skip", "Skip until timestamp", NULL, NULL }, |
551 | { "downsample", "Downsample", "Divide samplerate by factor", NULL, NULL }, | |
552 | { "compress", "Compress", "Compress idle periods longer than this value", NULL, NULL }, | |
06ad20be | 553 | ALL_ZERO |
7db06394 BV |
554 | }; |
555 | ||
556 | static struct sr_option *get_options(void) | |
557 | { | |
558 | if (!options[0].def) { | |
559 | options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS)); | |
560 | options[1].def = g_variant_ref_sink(g_variant_new_int32(-1)); | |
561 | options[2].def = g_variant_ref_sink(g_variant_new_int32(1)); | |
562 | options[3].def = g_variant_ref_sink(g_variant_new_int32(0)); | |
563 | } | |
564 | ||
565 | return options; | |
566 | } | |
567 | ||
d4c93774 | 568 | SR_PRIV struct sr_input_module input_vcd = { |
99eaa206 | 569 | .id = "vcd", |
7db06394 | 570 | .name = "VCD", |
17bfaca6 | 571 | .desc = "Value Change Dump", |
7db06394 BV |
572 | .metadata = { SR_INPUT_META_HEADER | SR_INPUT_META_REQUIRED }, |
573 | .options = get_options, | |
99eaa206 PA |
574 | .format_match = format_match, |
575 | .init = init, | |
7db06394 | 576 | .receive = receive, |
7066fd46 | 577 | .end = end, |
7db06394 | 578 | .cleanup = cleanup, |
99eaa206 | 579 | }; |