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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 "sigrok-cli.h" | |
21 | #include <glib.h> | |
22 | #include <glib/gstdio.h> | |
23 | #include <string.h> | |
24 | #include <stdlib.h> | |
25 | ||
26 | static struct sr_output_format *output_format = NULL; | |
27 | static int default_output_format = FALSE; | |
28 | static uint64_t limit_samples = 0; | |
29 | static uint64_t limit_frames = 0; | |
30 | ||
31 | #ifdef HAVE_SRD | |
32 | extern struct srd_session *srd_sess; | |
33 | #endif | |
34 | ||
35 | static int set_limit_time(const struct sr_dev_inst *sdi) | |
36 | { | |
37 | GVariant *gvar; | |
38 | uint64_t time_msec; | |
39 | uint64_t samplerate; | |
40 | ||
41 | if (!(time_msec = sr_parse_timestring(opt_time))) { | |
42 | g_critical("Invalid time '%s'", opt_time); | |
43 | return SR_ERR; | |
44 | } | |
45 | ||
46 | if (sr_dev_has_option(sdi, SR_CONF_LIMIT_MSEC)) { | |
47 | gvar = g_variant_new_uint64(time_msec); | |
48 | if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) { | |
49 | g_critical("Failed to configure time limit."); | |
50 | return SR_ERR; | |
51 | } | |
52 | } else if (sr_dev_has_option(sdi, SR_CONF_SAMPLERATE)) { | |
53 | /* Convert to samples based on the samplerate. */ | |
54 | sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar); | |
55 | samplerate = g_variant_get_uint64(gvar); | |
56 | g_variant_unref(gvar); | |
57 | limit_samples = (samplerate) * time_msec / (uint64_t)1000; | |
58 | if (limit_samples == 0) { | |
59 | g_critical("Not enough time at this samplerate."); | |
60 | return SR_ERR; | |
61 | } | |
62 | gvar = g_variant_new_uint64(limit_samples); | |
63 | if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) { | |
64 | g_critical("Failed to configure time-based sample limit."); | |
65 | return SR_ERR; | |
66 | } | |
67 | } else { | |
68 | g_critical("This device does not support time limits."); | |
69 | return SR_ERR; | |
70 | } | |
71 | ||
72 | return SR_OK; | |
73 | } | |
74 | ||
75 | struct sr_output *setup_output_format(const struct sr_dev_inst *sdi) | |
76 | { | |
77 | GHashTable *fmtargs; | |
78 | struct sr_output *o; | |
79 | struct sr_output_format **outputs; | |
80 | int i; | |
81 | char *fmtspec; | |
82 | ||
83 | if (opt_output_format && !strcmp(opt_output_format, "sigrok")) { | |
84 | /* Doesn't really exist as an output module - this is | |
85 | * the session save mode. */ | |
86 | g_free(opt_output_format); | |
87 | opt_output_format = NULL; | |
88 | } | |
89 | ||
90 | if (!opt_output_format) { | |
91 | opt_output_format = DEFAULT_OUTPUT_FORMAT; | |
92 | /* we'll need to remember this so when saving to a file | |
93 | * later, sigrok session format will be used. | |
94 | */ | |
95 | default_output_format = TRUE; | |
96 | } | |
97 | ||
98 | fmtargs = parse_generic_arg(opt_output_format, TRUE); | |
99 | fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key"); | |
100 | if (!fmtspec) | |
101 | g_critical("Invalid output format."); | |
102 | outputs = sr_output_list(); | |
103 | for (i = 0; outputs[i]; i++) { | |
104 | if (strcmp(outputs[i]->id, fmtspec)) | |
105 | continue; | |
106 | g_hash_table_remove(fmtargs, "sigrok_key"); | |
107 | output_format = outputs[i]; | |
108 | break; | |
109 | } | |
110 | if (!output_format) | |
111 | g_critical("Invalid output format '%s'.", opt_output_format); | |
112 | o = sr_output_new(output_format, fmtargs, sdi); | |
113 | g_hash_table_destroy(fmtargs); | |
114 | ||
115 | return o; | |
116 | } | |
117 | ||
118 | void datafeed_in(const struct sr_dev_inst *sdi, | |
119 | const struct sr_datafeed_packet *packet, void *cb_data) | |
120 | { | |
121 | const struct sr_datafeed_meta *meta; | |
122 | const struct sr_datafeed_logic *logic; | |
123 | const struct sr_datafeed_analog *analog; | |
124 | struct sr_session *session; | |
125 | struct sr_config *src; | |
126 | struct sr_channel *ch; | |
127 | static struct sr_output *o = NULL; | |
128 | static uint64_t rcvd_samples_logic = 0; | |
129 | static uint64_t rcvd_samples_analog = 0; | |
130 | static uint64_t samplerate = 0; | |
131 | static int triggered = 0; | |
132 | static FILE *outfile = NULL; | |
133 | GSList *l; | |
134 | GString *out; | |
135 | GVariant *gvar; | |
136 | uint64_t end_sample; | |
137 | uint64_t input_len; | |
138 | int i; | |
139 | char **channels; | |
140 | ||
141 | /* If the first packet to come in isn't a header, don't even try. */ | |
142 | if (packet->type != SR_DF_HEADER && o == NULL) | |
143 | return; | |
144 | ||
145 | session = cb_data; | |
146 | switch (packet->type) { | |
147 | case SR_DF_HEADER: | |
148 | g_debug("cli: Received SR_DF_HEADER."); | |
149 | o = setup_output_format(sdi); | |
150 | ||
151 | /* Prepare non-stdout output. */ | |
152 | outfile = stdout; | |
153 | if (opt_output_file) { | |
154 | if (default_output_format) { | |
155 | outfile = NULL; | |
156 | } else { | |
157 | /* saving to a file in whatever format was set | |
158 | * with --format, so all we need is a filehandle */ | |
159 | outfile = g_fopen(opt_output_file, "wb"); | |
160 | } | |
161 | } | |
162 | rcvd_samples_logic = rcvd_samples_analog = 0; | |
163 | ||
164 | if (sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE, | |
165 | &gvar) == SR_OK) { | |
166 | samplerate = g_variant_get_uint64(gvar); | |
167 | g_variant_unref(gvar); | |
168 | } | |
169 | ||
170 | #ifdef HAVE_SRD | |
171 | if (opt_pds) { | |
172 | if (samplerate) { | |
173 | if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE, | |
174 | g_variant_new_uint64(samplerate)) != SRD_OK) { | |
175 | g_critical("Failed to configure decode session."); | |
176 | break; | |
177 | } | |
178 | } | |
179 | if (srd_session_start(srd_sess) != SRD_OK) { | |
180 | g_critical("Failed to start decode session."); | |
181 | break; | |
182 | } | |
183 | } | |
184 | #endif | |
185 | break; | |
186 | ||
187 | case SR_DF_META: | |
188 | g_debug("cli: Received SR_DF_META."); | |
189 | meta = packet->payload; | |
190 | for (l = meta->config; l; l = l->next) { | |
191 | src = l->data; | |
192 | switch (src->key) { | |
193 | case SR_CONF_SAMPLERATE: | |
194 | samplerate = g_variant_get_uint64(src->data); | |
195 | g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate); | |
196 | #ifdef HAVE_SRD | |
197 | if (opt_pds) { | |
198 | if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE, | |
199 | g_variant_new_uint64(samplerate)) != SRD_OK) { | |
200 | g_critical("Failed to pass samplerate to decoder."); | |
201 | } | |
202 | } | |
203 | #endif | |
204 | break; | |
205 | case SR_CONF_SAMPLE_INTERVAL: | |
206 | samplerate = g_variant_get_uint64(src->data); | |
207 | g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate); | |
208 | break; | |
209 | default: | |
210 | /* Unknown metadata is not an error. */ | |
211 | break; | |
212 | } | |
213 | } | |
214 | break; | |
215 | ||
216 | case SR_DF_TRIGGER: | |
217 | g_debug("cli: Received SR_DF_TRIGGER."); | |
218 | triggered = 1; | |
219 | break; | |
220 | ||
221 | case SR_DF_LOGIC: | |
222 | logic = packet->payload; | |
223 | g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).", | |
224 | logic->length, logic->unitsize); | |
225 | if (logic->length == 0) | |
226 | break; | |
227 | ||
228 | /* Don't store any samples until triggered. */ | |
229 | if (opt_wait_trigger && !triggered) | |
230 | break; | |
231 | ||
232 | if (limit_samples && rcvd_samples_logic >= limit_samples) | |
233 | break; | |
234 | ||
235 | end_sample = rcvd_samples_logic + logic->length / logic->unitsize; | |
236 | /* Cut off last packet according to the sample limit. */ | |
237 | if (limit_samples && end_sample > limit_samples) | |
238 | end_sample = limit_samples; | |
239 | input_len = (end_sample - rcvd_samples_logic) * logic->unitsize; | |
240 | ||
241 | if (opt_output_file && default_output_format) { | |
242 | /* Saving to a session file. */ | |
243 | if (rcvd_samples_logic == 0) { | |
244 | /* First packet with logic data, init session file. */ | |
245 | channels = g_malloc(sizeof(char *) * g_slist_length(sdi->channels)); | |
246 | for (i = 0, l = sdi->channels; l; l = l->next) { | |
247 | ch = l->data; | |
248 | if (ch->enabled && ch->type == SR_CHANNEL_LOGIC) | |
249 | channels[i++] = ch->name; | |
250 | } | |
251 | channels[i] = NULL; | |
252 | sr_session_save_init(session, opt_output_file, | |
253 | samplerate, channels); | |
254 | g_free(channels); | |
255 | } | |
256 | save_chunk_logic(session, logic->data, input_len, logic->unitsize); | |
257 | } else { | |
258 | if (opt_pds) { | |
259 | #ifdef HAVE_SRD | |
260 | if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample, | |
261 | logic->data, input_len) != SRD_OK) | |
262 | sr_session_stop(session); | |
263 | #endif | |
264 | } | |
265 | } | |
266 | ||
267 | rcvd_samples_logic = end_sample; | |
268 | break; | |
269 | ||
270 | case SR_DF_ANALOG: | |
271 | analog = packet->payload; | |
272 | g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples); | |
273 | if (analog->num_samples == 0) | |
274 | break; | |
275 | ||
276 | if (limit_samples && rcvd_samples_analog >= limit_samples) | |
277 | break; | |
278 | ||
279 | rcvd_samples_analog += analog->num_samples; | |
280 | break; | |
281 | ||
282 | case SR_DF_FRAME_BEGIN: | |
283 | g_debug("cli: Received SR_DF_FRAME_BEGIN."); | |
284 | break; | |
285 | ||
286 | case SR_DF_FRAME_END: | |
287 | g_debug("cli: Received SR_DF_FRAME_END."); | |
288 | break; | |
289 | ||
290 | default: | |
291 | break; | |
292 | } | |
293 | ||
294 | if (o && outfile && !opt_pds) { | |
295 | if (sr_output_send(o, packet, &out) == SR_OK && out) { | |
296 | fwrite(out->str, 1, out->len, outfile); | |
297 | fflush(outfile); | |
298 | g_string_free(out, TRUE); | |
299 | } | |
300 | } | |
301 | ||
302 | /* SR_DF_END needs to be handled after the output module's receive() | |
303 | * is called, so it can properly clean up that module. */ | |
304 | if (packet->type == SR_DF_END) { | |
305 | g_debug("cli: Received SR_DF_END."); | |
306 | ||
307 | if (o) | |
308 | sr_output_free(o); | |
309 | o = NULL; | |
310 | ||
311 | if (outfile && outfile != stdout) | |
312 | fclose(outfile); | |
313 | ||
314 | if (opt_output_file && default_output_format) | |
315 | /* Flush whatever is left out to the session file. */ | |
316 | save_chunk_logic(session, NULL, 0, 0); | |
317 | ||
318 | if (limit_samples) { | |
319 | if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples) | |
320 | g_warning("Device only sent %" PRIu64 " samples.", | |
321 | rcvd_samples_logic); | |
322 | else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples) | |
323 | g_warning("Device only sent %" PRIu64 " samples.", | |
324 | rcvd_samples_analog); | |
325 | } | |
326 | } | |
327 | ||
328 | } | |
329 | ||
330 | int opt_to_gvar(char *key, char *value, struct sr_config *src) | |
331 | { | |
332 | const struct sr_config_info *srci; | |
333 | double tmp_double, dlow, dhigh; | |
334 | uint64_t tmp_u64, p, q, low, high; | |
335 | GVariant *rational[2], *range[2]; | |
336 | gboolean tmp_bool; | |
337 | int ret; | |
338 | ||
339 | if (!(srci = sr_config_info_name_get(key))) { | |
340 | g_critical("Unknown device option '%s'.", (char *) key); | |
341 | return -1; | |
342 | } | |
343 | src->key = srci->key; | |
344 | ||
345 | if ((value == NULL) && | |
346 | (srci->datatype != SR_T_BOOL)) { | |
347 | g_critical("Option '%s' needs a value.", (char *)key); | |
348 | return -1; | |
349 | } | |
350 | ||
351 | ret = 0; | |
352 | switch (srci->datatype) { | |
353 | case SR_T_UINT64: | |
354 | ret = sr_parse_sizestring(value, &tmp_u64); | |
355 | if (ret != 0) | |
356 | break; | |
357 | src->data = g_variant_new_uint64(tmp_u64); | |
358 | break; | |
359 | case SR_T_INT32: | |
360 | ret = sr_parse_sizestring(value, &tmp_u64); | |
361 | if (ret != 0) | |
362 | break; | |
363 | src->data = g_variant_new_int32(tmp_u64); | |
364 | break; | |
365 | case SR_T_STRING: | |
366 | src->data = g_variant_new_string(value); | |
367 | break; | |
368 | case SR_T_BOOL: | |
369 | if (!value) | |
370 | tmp_bool = TRUE; | |
371 | else | |
372 | tmp_bool = sr_parse_boolstring(value); | |
373 | src->data = g_variant_new_boolean(tmp_bool); | |
374 | break; | |
375 | case SR_T_FLOAT: | |
376 | tmp_double = strtof(value, NULL); | |
377 | src->data = g_variant_new_double(tmp_double); | |
378 | break; | |
379 | case SR_T_RATIONAL_PERIOD: | |
380 | if ((ret = sr_parse_period(value, &p, &q)) != SR_OK) | |
381 | break; | |
382 | rational[0] = g_variant_new_uint64(p); | |
383 | rational[1] = g_variant_new_uint64(q); | |
384 | src->data = g_variant_new_tuple(rational, 2); | |
385 | break; | |
386 | case SR_T_RATIONAL_VOLT: | |
387 | if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK) | |
388 | break; | |
389 | rational[0] = g_variant_new_uint64(p); | |
390 | rational[1] = g_variant_new_uint64(q); | |
391 | src->data = g_variant_new_tuple(rational, 2); | |
392 | break; | |
393 | case SR_T_UINT64_RANGE: | |
394 | if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) { | |
395 | ret = -1; | |
396 | break; | |
397 | } else { | |
398 | range[0] = g_variant_new_uint64(low); | |
399 | range[1] = g_variant_new_uint64(high); | |
400 | src->data = g_variant_new_tuple(range, 2); | |
401 | } | |
402 | break; | |
403 | case SR_T_DOUBLE_RANGE: | |
404 | if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) { | |
405 | ret = -1; | |
406 | break; | |
407 | } else { | |
408 | range[0] = g_variant_new_double(dlow); | |
409 | range[1] = g_variant_new_double(dhigh); | |
410 | src->data = g_variant_new_tuple(range, 2); | |
411 | } | |
412 | break; | |
413 | default: | |
414 | ret = -1; | |
415 | } | |
416 | ||
417 | return ret; | |
418 | } | |
419 | ||
420 | int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args) | |
421 | { | |
422 | struct sr_config src; | |
423 | struct sr_channel_group *cg; | |
424 | GHashTableIter iter; | |
425 | gpointer key, value; | |
426 | int ret; | |
427 | ||
428 | g_hash_table_iter_init(&iter, args); | |
429 | while (g_hash_table_iter_next(&iter, &key, &value)) { | |
430 | if ((ret = opt_to_gvar(key, value, &src)) != 0) | |
431 | return ret; | |
432 | cg = select_channel_group(sdi); | |
433 | ret = sr_config_set(sdi, cg, src.key, src.data); | |
434 | if (ret != SR_OK) { | |
435 | g_critical("Failed to set device option '%s'.", (char *)key); | |
436 | return ret; | |
437 | } | |
438 | } | |
439 | ||
440 | return SR_OK; | |
441 | } | |
442 | ||
443 | void run_session(void) | |
444 | { | |
445 | GSList *devices; | |
446 | GHashTable *devargs; | |
447 | GVariant *gvar; | |
448 | struct sr_session *session; | |
449 | struct sr_trigger *trigger; | |
450 | struct sr_dev_inst *sdi; | |
451 | uint64_t min_samples, max_samples; | |
452 | ||
453 | devices = device_scan(); | |
454 | if (!devices) { | |
455 | g_critical("No devices found."); | |
456 | return; | |
457 | } | |
458 | if (g_slist_length(devices) > 1) { | |
459 | g_critical("sigrok-cli only supports one device for capturing."); | |
460 | return; | |
461 | } | |
462 | sdi = devices->data; | |
463 | ||
464 | sr_session_new(&session); | |
465 | sr_session_datafeed_callback_add(session, datafeed_in, NULL); | |
466 | ||
467 | if (sr_dev_open(sdi) != SR_OK) { | |
468 | g_critical("Failed to open device."); | |
469 | return; | |
470 | } | |
471 | ||
472 | if (sr_session_dev_add(session, sdi) != SR_OK) { | |
473 | g_critical("Failed to add device to session."); | |
474 | sr_session_destroy(session); | |
475 | return; | |
476 | } | |
477 | ||
478 | if (opt_config) { | |
479 | if ((devargs = parse_generic_arg(opt_config, FALSE))) { | |
480 | if (set_dev_options(sdi, devargs) != SR_OK) | |
481 | return; | |
482 | g_hash_table_destroy(devargs); | |
483 | } | |
484 | } | |
485 | ||
486 | if (select_channels(sdi) != SR_OK) { | |
487 | g_critical("Failed to set channels."); | |
488 | sr_session_destroy(session); | |
489 | return; | |
490 | } | |
491 | ||
492 | if (opt_triggers) { | |
493 | if (!parse_triggerstring(sdi, opt_triggers, &trigger)) { | |
494 | sr_session_destroy(session); | |
495 | return; | |
496 | } | |
497 | if (sr_session_trigger_set(session, trigger) != SR_OK) { | |
498 | sr_session_destroy(session); | |
499 | return; | |
500 | } | |
501 | } | |
502 | ||
503 | if (opt_continuous) { | |
504 | if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) { | |
505 | g_critical("This device does not support continuous sampling."); | |
506 | sr_session_destroy(session); | |
507 | return; | |
508 | } | |
509 | } | |
510 | ||
511 | if (opt_time) { | |
512 | if (set_limit_time(sdi) != SR_OK) { | |
513 | sr_session_destroy(session); | |
514 | return; | |
515 | } | |
516 | } | |
517 | ||
518 | if (opt_samples) { | |
519 | if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) { | |
520 | g_critical("Invalid sample limit '%s'.", opt_samples); | |
521 | sr_session_destroy(session); | |
522 | return; | |
523 | } | |
524 | if (sr_config_list(sdi->driver, sdi, NULL, | |
525 | SR_CONF_LIMIT_SAMPLES, &gvar) == SR_OK) { | |
526 | /* The device has no compression, or compression is turned | |
527 | * off, and publishes its sample memory size. */ | |
528 | g_variant_get(gvar, "(tt)", &min_samples, &max_samples); | |
529 | g_variant_unref(gvar); | |
530 | if (limit_samples < min_samples) { | |
531 | g_critical("The device stores at least %"PRIu64 | |
532 | " samples with the current settings.", min_samples); | |
533 | } | |
534 | if (limit_samples > max_samples) { | |
535 | g_critical("The device can store only %"PRIu64 | |
536 | " samples with the current settings.", max_samples); | |
537 | } | |
538 | } | |
539 | gvar = g_variant_new_uint64(limit_samples); | |
540 | if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) { | |
541 | g_critical("Failed to configure sample limit."); | |
542 | sr_session_destroy(session); | |
543 | return; | |
544 | } | |
545 | } | |
546 | ||
547 | if (opt_frames) { | |
548 | if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) { | |
549 | g_critical("Invalid sample limit '%s'.", opt_samples); | |
550 | sr_session_destroy(session); | |
551 | return; | |
552 | } | |
553 | gvar = g_variant_new_uint64(limit_frames); | |
554 | if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) { | |
555 | g_critical("Failed to configure frame limit."); | |
556 | sr_session_destroy(session); | |
557 | return; | |
558 | } | |
559 | } | |
560 | ||
561 | if (sr_session_start(session) != SR_OK) { | |
562 | g_critical("Failed to start session."); | |
563 | sr_session_destroy(session); | |
564 | return; | |
565 | } | |
566 | ||
567 | if (opt_continuous) | |
568 | add_anykey(session); | |
569 | ||
570 | sr_session_run(session); | |
571 | ||
572 | if (opt_continuous) | |
573 | clear_anykey(); | |
574 | ||
575 | sr_session_datafeed_callback_remove_all(session); | |
576 | sr_session_destroy(session); | |
577 | g_slist_free(devices); | |
578 | ||
579 | } | |
580 | ||
581 | void save_chunk_logic(struct sr_session *session, uint8_t *data, | |
582 | uint64_t data_len, int unitsize) | |
583 | { | |
584 | static uint8_t *buf = NULL; | |
585 | static int buf_len = 0; | |
586 | static int last_unitsize = 0; | |
587 | int max; | |
588 | ||
589 | if (!buf) | |
590 | buf = g_malloc(SAVE_CHUNK_SIZE); | |
591 | ||
592 | if (buf_len + data_len > SAVE_CHUNK_SIZE) { | |
593 | max = (SAVE_CHUNK_SIZE - buf_len) / unitsize * unitsize; | |
594 | memcpy(buf + buf_len, data, max); | |
595 | sr_session_append(session, opt_output_file, buf, unitsize, | |
596 | (buf_len + max) / unitsize); | |
597 | memcpy(buf, data + max, data_len - max); | |
598 | buf_len = data_len - max; | |
599 | } else if (data_len == 0 && last_unitsize != 0) { | |
600 | /* End of data, flush the buffer out. */ | |
601 | sr_session_append(session, opt_output_file, buf, last_unitsize, | |
602 | buf_len / last_unitsize); | |
603 | } else { | |
604 | /* Buffer chunk. */ | |
605 | memcpy(buf + buf_len, data, data_len); | |
606 | buf_len += data_len; | |
607 | } | |
608 | last_unitsize = unitsize; | |
609 | ||
610 | } |