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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 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 <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <errno.h> | |
24 | #include <glib.h> | |
25 | #include <glib/gstdio.h> | |
26 | #include <zip.h> | |
27 | #include <libsigrok/libsigrok.h> | |
28 | #include "libsigrok-internal.h" | |
29 | ||
30 | #define LOG_PREFIX "output/srzip" | |
31 | ||
32 | struct out_context { | |
33 | gboolean zip_created; | |
34 | uint64_t samplerate; | |
35 | char *filename; | |
36 | gint first_analog_index; | |
37 | gint *analog_index_map; | |
38 | }; | |
39 | ||
40 | static int init(struct sr_output *o, GHashTable *options) | |
41 | { | |
42 | struct out_context *outc; | |
43 | ||
44 | (void)options; | |
45 | ||
46 | if (!o->filename || o->filename[0] == '\0') { | |
47 | sr_info("srzip output module requires a file name, cannot save."); | |
48 | return SR_ERR_ARG; | |
49 | } | |
50 | ||
51 | outc = g_malloc0(sizeof(struct out_context)); | |
52 | outc->filename = g_strdup(o->filename); | |
53 | o->priv = outc; | |
54 | ||
55 | return SR_OK; | |
56 | } | |
57 | ||
58 | static int zip_create(const struct sr_output *o) | |
59 | { | |
60 | struct out_context *outc; | |
61 | struct zip *zipfile; | |
62 | struct zip_source *versrc, *metasrc; | |
63 | struct sr_channel *ch; | |
64 | GVariant *gvar; | |
65 | GKeyFile *meta; | |
66 | GSList *l; | |
67 | const char *devgroup; | |
68 | char *s, *metabuf; | |
69 | gsize metalen; | |
70 | guint logic_channels = 0, enabled_logic_channels = 0; | |
71 | guint enabled_analog_channels = 0; | |
72 | guint index; | |
73 | ||
74 | outc = o->priv; | |
75 | ||
76 | if (outc->samplerate == 0 && sr_config_get(o->sdi->driver, o->sdi, NULL, | |
77 | SR_CONF_SAMPLERATE, &gvar) == SR_OK) { | |
78 | outc->samplerate = g_variant_get_uint64(gvar); | |
79 | g_variant_unref(gvar); | |
80 | } | |
81 | ||
82 | /* Quietly delete it first, libzip wants replace ops otherwise. */ | |
83 | g_unlink(outc->filename); | |
84 | zipfile = zip_open(outc->filename, ZIP_CREATE, NULL); | |
85 | if (!zipfile) | |
86 | return SR_ERR; | |
87 | ||
88 | /* "version" */ | |
89 | versrc = zip_source_buffer(zipfile, "2", 1, FALSE); | |
90 | if (zip_add(zipfile, "version", versrc) < 0) { | |
91 | sr_err("Error saving version into zipfile: %s", | |
92 | zip_strerror(zipfile)); | |
93 | zip_source_free(versrc); | |
94 | zip_discard(zipfile); | |
95 | return SR_ERR; | |
96 | } | |
97 | ||
98 | /* init "metadata" */ | |
99 | meta = g_key_file_new(); | |
100 | ||
101 | g_key_file_set_string(meta, "global", "sigrok version", | |
102 | SR_PACKAGE_VERSION_STRING); | |
103 | ||
104 | devgroup = "device 1"; | |
105 | ||
106 | for (l = o->sdi->channels; l; l = l->next) { | |
107 | ch = l->data; | |
108 | ||
109 | switch (ch->type) { | |
110 | case SR_CHANNEL_LOGIC: | |
111 | if (ch->enabled) | |
112 | enabled_logic_channels++; | |
113 | logic_channels++; | |
114 | break; | |
115 | case SR_CHANNEL_ANALOG: | |
116 | if (ch->enabled) | |
117 | enabled_analog_channels++; | |
118 | break; | |
119 | } | |
120 | } | |
121 | ||
122 | /* When reading the file, the first index of the analog channels | |
123 | * can only be deduced through the "total probes" count, so the | |
124 | * first analog index must follow the last logic one, enabled or not. */ | |
125 | if (enabled_logic_channels > 0) | |
126 | outc->first_analog_index = logic_channels + 1; | |
127 | else | |
128 | outc->first_analog_index = 1; | |
129 | ||
130 | /* Only set capturefile and probes if we will actually save logic data. */ | |
131 | if (enabled_logic_channels > 0) { | |
132 | g_key_file_set_string(meta, devgroup, "capturefile", "logic-1"); | |
133 | g_key_file_set_integer(meta, devgroup, "total probes", logic_channels); | |
134 | } | |
135 | ||
136 | s = sr_samplerate_string(outc->samplerate); | |
137 | g_key_file_set_string(meta, devgroup, "samplerate", s); | |
138 | g_free(s); | |
139 | ||
140 | g_key_file_set_integer(meta, devgroup, "total analog", enabled_analog_channels); | |
141 | ||
142 | /* Make the array one entry larger than needed so we can use the final | |
143 | * entry as terminator, which is set to -1. */ | |
144 | outc->analog_index_map = g_malloc0(sizeof(gint) * (enabled_analog_channels + 1)); | |
145 | outc->analog_index_map[enabled_analog_channels] = -1; | |
146 | ||
147 | index = 0; | |
148 | for (l = o->sdi->channels; l; l = l->next) { | |
149 | ch = l->data; | |
150 | if (!ch->enabled) | |
151 | continue; | |
152 | ||
153 | switch (ch->type) { | |
154 | case SR_CHANNEL_LOGIC: | |
155 | s = g_strdup_printf("probe%d", ch->index + 1); | |
156 | break; | |
157 | case SR_CHANNEL_ANALOG: | |
158 | outc->analog_index_map[index] = ch->index; | |
159 | s = g_strdup_printf("analog%d", outc->first_analog_index + index); | |
160 | index++; | |
161 | break; | |
162 | } | |
163 | g_key_file_set_string(meta, devgroup, s, ch->name); | |
164 | g_free(s); | |
165 | } | |
166 | ||
167 | metabuf = g_key_file_to_data(meta, &metalen, NULL); | |
168 | g_key_file_free(meta); | |
169 | ||
170 | metasrc = zip_source_buffer(zipfile, metabuf, metalen, FALSE); | |
171 | if (zip_add(zipfile, "metadata", metasrc) < 0) { | |
172 | sr_err("Error saving metadata into zipfile: %s", | |
173 | zip_strerror(zipfile)); | |
174 | zip_source_free(metasrc); | |
175 | zip_discard(zipfile); | |
176 | g_free(metabuf); | |
177 | return SR_ERR; | |
178 | } | |
179 | ||
180 | if (zip_close(zipfile) < 0) { | |
181 | sr_err("Error saving zipfile: %s", zip_strerror(zipfile)); | |
182 | zip_discard(zipfile); | |
183 | g_free(metabuf); | |
184 | return SR_ERR; | |
185 | } | |
186 | g_free(metabuf); | |
187 | ||
188 | return SR_OK; | |
189 | } | |
190 | ||
191 | static int zip_append(const struct sr_output *o, unsigned char *buf, | |
192 | int unitsize, int length) | |
193 | { | |
194 | struct out_context *outc; | |
195 | struct zip *archive; | |
196 | struct zip_source *logicsrc; | |
197 | int64_t i, num_files; | |
198 | struct zip_stat zs; | |
199 | struct zip_source *metasrc; | |
200 | GKeyFile *kf; | |
201 | GError *error; | |
202 | uint64_t chunk_num; | |
203 | const char *entry_name; | |
204 | char *metabuf; | |
205 | gsize metalen; | |
206 | char *chunkname; | |
207 | unsigned int next_chunk_num; | |
208 | ||
209 | outc = o->priv; | |
210 | if (!(archive = zip_open(outc->filename, 0, NULL))) | |
211 | return SR_ERR; | |
212 | ||
213 | if (zip_stat(archive, "metadata", 0, &zs) < 0) { | |
214 | sr_err("Failed to open metadata: %s", zip_strerror(archive)); | |
215 | zip_discard(archive); | |
216 | return SR_ERR; | |
217 | } | |
218 | kf = sr_sessionfile_read_metadata(archive, &zs); | |
219 | if (!kf) { | |
220 | zip_discard(archive); | |
221 | return SR_ERR_DATA; | |
222 | } | |
223 | /* | |
224 | * If the file was only initialized but doesn't yet have any | |
225 | * data it in, it won't have a unitsize field in metadata yet. | |
226 | */ | |
227 | error = NULL; | |
228 | metabuf = NULL; | |
229 | if (!g_key_file_has_key(kf, "device 1", "unitsize", &error)) { | |
230 | if (error && error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND) { | |
231 | sr_err("Failed to check unitsize key: %s", error->message); | |
232 | g_error_free(error); | |
233 | g_key_file_free(kf); | |
234 | zip_discard(archive); | |
235 | return SR_ERR; | |
236 | } | |
237 | g_clear_error(&error); | |
238 | ||
239 | /* Add unitsize field. */ | |
240 | g_key_file_set_integer(kf, "device 1", "unitsize", unitsize); | |
241 | metabuf = g_key_file_to_data(kf, &metalen, NULL); | |
242 | metasrc = zip_source_buffer(archive, metabuf, metalen, FALSE); | |
243 | ||
244 | if (zip_replace(archive, zs.index, metasrc) < 0) { | |
245 | sr_err("Failed to replace metadata: %s", | |
246 | zip_strerror(archive)); | |
247 | g_key_file_free(kf); | |
248 | zip_source_free(metasrc); | |
249 | zip_discard(archive); | |
250 | g_free(metabuf); | |
251 | return SR_ERR; | |
252 | } | |
253 | } | |
254 | g_key_file_free(kf); | |
255 | ||
256 | next_chunk_num = 1; | |
257 | num_files = zip_get_num_entries(archive, 0); | |
258 | for (i = 0; i < num_files; i++) { | |
259 | entry_name = zip_get_name(archive, i, 0); | |
260 | if (!entry_name || strncmp(entry_name, "logic-1", 7) != 0) | |
261 | continue; | |
262 | if (entry_name[7] == '\0') { | |
263 | /* | |
264 | * This file has no extra chunks, just a single | |
265 | * "logic-1". Rename it to "logic-1-1" and continue | |
266 | * with chunk 2. | |
267 | */ | |
268 | if (zip_rename(archive, i, "logic-1-1") < 0) { | |
269 | sr_err("Failed to rename 'logic-1' to 'logic-1-1': %s", | |
270 | zip_strerror(archive)); | |
271 | zip_discard(archive); | |
272 | g_free(metabuf); | |
273 | return SR_ERR; | |
274 | } | |
275 | next_chunk_num = 2; | |
276 | break; | |
277 | } else if (entry_name[7] == '-') { | |
278 | chunk_num = g_ascii_strtoull(entry_name + 8, NULL, 10); | |
279 | if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num) | |
280 | next_chunk_num = chunk_num + 1; | |
281 | } | |
282 | } | |
283 | ||
284 | if (length % unitsize != 0) { | |
285 | sr_warn("Chunk size %d not a multiple of the" | |
286 | " unit size %d.", length, unitsize); | |
287 | } | |
288 | logicsrc = zip_source_buffer(archive, buf, length, FALSE); | |
289 | chunkname = g_strdup_printf("logic-1-%u", next_chunk_num); | |
290 | i = zip_add(archive, chunkname, logicsrc); | |
291 | g_free(chunkname); | |
292 | if (i < 0) { | |
293 | sr_err("Failed to add chunk 'logic-1-%u': %s", | |
294 | next_chunk_num, zip_strerror(archive)); | |
295 | zip_source_free(logicsrc); | |
296 | zip_discard(archive); | |
297 | g_free(metabuf); | |
298 | return SR_ERR; | |
299 | } | |
300 | if (zip_close(archive) < 0) { | |
301 | sr_err("Error saving session file: %s", zip_strerror(archive)); | |
302 | zip_discard(archive); | |
303 | g_free(metabuf); | |
304 | return SR_ERR; | |
305 | } | |
306 | g_free(metabuf); | |
307 | ||
308 | return SR_OK; | |
309 | } | |
310 | ||
311 | static int zip_append_analog(const struct sr_output *o, | |
312 | const struct sr_datafeed_analog *analog) | |
313 | { | |
314 | struct out_context *outc; | |
315 | struct zip *archive; | |
316 | struct zip_source *analogsrc; | |
317 | int64_t i, num_files; | |
318 | struct zip_stat zs; | |
319 | uint64_t chunk_num; | |
320 | const char *entry_name; | |
321 | char *basename; | |
322 | gsize baselen; | |
323 | struct sr_channel *channel; | |
324 | float *chunkbuf; | |
325 | gsize chunksize; | |
326 | char *chunkname; | |
327 | unsigned int next_chunk_num, index; | |
328 | ||
329 | outc = o->priv; | |
330 | ||
331 | /* TODO: support packets covering multiple channels */ | |
332 | if (g_slist_length(analog->meaning->channels) != 1) { | |
333 | sr_err("Analog packets covering multiple channels not supported yet"); | |
334 | return SR_ERR; | |
335 | } | |
336 | channel = analog->meaning->channels->data; | |
337 | ||
338 | /* When reading the file, analog channels must be consecutive. | |
339 | * Thus we need a global channel index map as we don't know in | |
340 | * which order the channel data comes in. */ | |
341 | for (index = 0; outc->analog_index_map[index] != -1; index++) | |
342 | if (outc->analog_index_map[index] == channel->index) | |
343 | break; | |
344 | if (outc->analog_index_map[index] == -1) | |
345 | return SR_ERR_ARG; /* Channel index was not in the list */ | |
346 | ||
347 | index += outc->first_analog_index; | |
348 | ||
349 | if (!(archive = zip_open(outc->filename, 0, NULL))) | |
350 | return SR_ERR; | |
351 | ||
352 | if (zip_stat(archive, "metadata", 0, &zs) < 0) { | |
353 | sr_err("Failed to open metadata: %s", zip_strerror(archive)); | |
354 | goto err_zip_discard; | |
355 | } | |
356 | ||
357 | basename = g_strdup_printf("analog-1-%u", index); | |
358 | baselen = strlen(basename); | |
359 | next_chunk_num = 1; | |
360 | num_files = zip_get_num_entries(archive, 0); | |
361 | for (i = 0; i < num_files; i++) { | |
362 | entry_name = zip_get_name(archive, i, 0); | |
363 | if (!entry_name || strncmp(entry_name, basename, baselen) != 0) { | |
364 | continue; | |
365 | } else if (entry_name[baselen] == '-') { | |
366 | chunk_num = g_ascii_strtoull(entry_name + baselen + 1, NULL, 10); | |
367 | if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num) | |
368 | next_chunk_num = chunk_num + 1; | |
369 | } | |
370 | } | |
371 | ||
372 | chunksize = sizeof(float) * analog->num_samples; | |
373 | if (!(chunkbuf = g_try_malloc(chunksize))) | |
374 | goto err_free_basename; | |
375 | ||
376 | if (sr_analog_to_float(analog, chunkbuf) != SR_OK) | |
377 | goto err_free_chunkbuf; | |
378 | ||
379 | analogsrc = zip_source_buffer(archive, chunkbuf, chunksize, FALSE); | |
380 | chunkname = g_strdup_printf("%s-%u", basename, next_chunk_num); | |
381 | i = zip_add(archive, chunkname, analogsrc); | |
382 | if (i < 0) { | |
383 | sr_err("Failed to add chunk '%s': %s", chunkname, zip_strerror(archive)); | |
384 | g_free(chunkname); | |
385 | zip_source_free(analogsrc); | |
386 | goto err_free_chunkbuf; | |
387 | } | |
388 | g_free(chunkname); | |
389 | if (zip_close(archive) < 0) { | |
390 | sr_err("Error saving session file: %s", zip_strerror(archive)); | |
391 | goto err_free_chunkbuf; | |
392 | } | |
393 | ||
394 | g_free(basename); | |
395 | g_free(chunkbuf); | |
396 | ||
397 | return SR_OK; | |
398 | ||
399 | err_free_chunkbuf: | |
400 | g_free(chunkbuf); | |
401 | err_free_basename: | |
402 | g_free(basename); | |
403 | err_zip_discard: | |
404 | zip_discard(archive); | |
405 | ||
406 | return SR_ERR; | |
407 | } | |
408 | ||
409 | static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet, | |
410 | GString **out) | |
411 | { | |
412 | struct out_context *outc; | |
413 | const struct sr_datafeed_meta *meta; | |
414 | const struct sr_datafeed_logic *logic; | |
415 | const struct sr_datafeed_analog *analog; | |
416 | const struct sr_config *src; | |
417 | GSList *l; | |
418 | ||
419 | int ret; | |
420 | ||
421 | *out = NULL; | |
422 | if (!o || !o->sdi || !(outc = o->priv)) | |
423 | return SR_ERR_ARG; | |
424 | ||
425 | switch (packet->type) { | |
426 | case SR_DF_META: | |
427 | meta = packet->payload; | |
428 | for (l = meta->config; l; l = l->next) { | |
429 | src = l->data; | |
430 | if (src->key != SR_CONF_SAMPLERATE) | |
431 | continue; | |
432 | outc->samplerate = g_variant_get_uint64(src->data); | |
433 | } | |
434 | break; | |
435 | case SR_DF_LOGIC: | |
436 | if (!outc->zip_created) { | |
437 | if ((ret = zip_create(o)) != SR_OK) | |
438 | return ret; | |
439 | outc->zip_created = TRUE; | |
440 | } | |
441 | logic = packet->payload; | |
442 | ret = zip_append(o, logic->data, logic->unitsize, logic->length); | |
443 | if (ret != SR_OK) | |
444 | return ret; | |
445 | break; | |
446 | case SR_DF_ANALOG: | |
447 | if (!outc->zip_created) { | |
448 | if ((ret = zip_create(o)) != SR_OK) | |
449 | return ret; | |
450 | outc->zip_created = TRUE; | |
451 | } | |
452 | analog = packet->payload; | |
453 | ret = zip_append_analog(o, analog); | |
454 | if (ret != SR_OK) | |
455 | return ret; | |
456 | break; | |
457 | } | |
458 | ||
459 | return SR_OK; | |
460 | } | |
461 | ||
462 | static struct sr_option options[] = { | |
463 | ALL_ZERO | |
464 | }; | |
465 | ||
466 | static const struct sr_option *get_options(void) | |
467 | { | |
468 | return options; | |
469 | } | |
470 | ||
471 | static int cleanup(struct sr_output *o) | |
472 | { | |
473 | struct out_context *outc; | |
474 | ||
475 | outc = o->priv; | |
476 | g_free(outc->analog_index_map); | |
477 | g_free(outc->filename); | |
478 | g_free(outc); | |
479 | o->priv = NULL; | |
480 | ||
481 | return SR_OK; | |
482 | } | |
483 | ||
484 | SR_PRIV struct sr_output_module output_srzip = { | |
485 | .id = "srzip", | |
486 | .name = "srzip", | |
487 | .desc = "srzip session file", | |
488 | .exts = (const char*[]){"sr", NULL}, | |
489 | .flags = SR_OUTPUT_INTERNAL_IO_HANDLING, | |
490 | .options = get_options, | |
491 | .init = init, | |
492 | .receive = receive, | |
493 | .cleanup = cleanup, | |
494 | }; |