2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
24 #include <sys/types.h>
28 #include <glib/gstdio.h>
29 #include "config.h" /* Needed for PACKAGE_VERSION and others. */
30 #include "libsigrok.h"
31 #include "libsigrok-internal.h"
34 #define LOG_PREFIX "session-file"
40 * Loading and saving libsigrok session files.
44 * @addtogroup grp_session
49 extern SR_PRIV struct sr_dev_driver session_driver;
50 static int session_driver_initialized = 0;
54 SR_PRIV int sr_sessionfile_check(const char *filename)
66 if (stat(filename, &st) == -1) {
67 sr_err("Couldn't stat %s: %s", filename, strerror(errno));
71 if (!(archive = zip_open(filename, 0, &ret)))
72 /* No logging: this can be used just to check if it's
73 * a sigrok session file or not. */
77 if (!(zf = zip_fopen(archive, "version", 0))) {
78 sr_dbg("Not a sigrok session file: no version found.");
81 if ((ret = zip_fread(zf, s, 10)) == -1)
85 version = strtoull(s, NULL, 10);
87 sr_dbg("Cannot handle sigrok session file version %d.", version);
90 sr_spew("Detected sigrok session file version %d.", version);
93 if (zip_stat(archive, "metadata", 0, &zs) == -1) {
94 sr_dbg("Not a valid sigrok session file.");
98 if ((ret = zip_close(archive)) == -1) {
99 sr_dbg("error closing zipfile: %s", zip_strerror(archive));
107 * Load the session from the specified filename.
109 * @param filename The name of the session file to load.
110 * @param session The session to load the file into.
112 * @retval SR_OK Success
113 * @retval SR_ERR_MALLOC Memory allocation error
114 * @retval SR_ERR_DATA Malformed session file
115 * @retval SR_ERR This is not a session file
117 SR_API int sr_session_load(const char *filename, struct sr_session **session)
120 GPtrArray *capturefiles;
124 struct sr_dev_inst *sdi;
125 struct sr_channel *ch;
127 uint64_t tmp_u64, total_channels, enabled_channels, p;
128 char **sections, **keys, *metafile, *val;
129 char channelname[SR_MAX_CHANNELNAME_LEN + 1];
131 if ((ret = sr_sessionfile_check(filename)) != SR_OK)
134 if (!(archive = zip_open(filename, 0, &ret)))
137 if (zip_stat(archive, "metadata", 0, &zs) == -1)
140 if (!(metafile = g_try_malloc(zs.size))) {
141 sr_err("%s: metafile malloc failed", __func__);
142 return SR_ERR_MALLOC;
145 zf = zip_fopen_index(archive, zs.index, 0);
146 zip_fread(zf, metafile, zs.size);
149 kf = g_key_file_new();
150 if (!g_key_file_load_from_data(kf, metafile, zs.size, 0, NULL)) {
151 sr_dbg("Failed to parse metadata.");
155 if ((ret = sr_session_new(session)) != SR_OK)
159 capturefiles = g_ptr_array_new_with_free_func(g_free);
160 sections = g_key_file_get_groups(kf, NULL);
161 for (i = 0; sections[i] && ret == SR_OK; i++) {
162 if (!strcmp(sections[i], "global"))
163 /* nothing really interesting in here yet */
165 if (!strncmp(sections[i], "device ", 7)) {
168 enabled_channels = total_channels = 0;
169 keys = g_key_file_get_keys(kf, sections[i], NULL, NULL);
170 for (j = 0; keys[j]; j++) {
171 val = g_key_file_get_string(kf, sections[i], keys[j], NULL);
172 if (!strcmp(keys[j], "capturefile")) {
173 sdi = sr_dev_inst_new();
174 sdi->driver = &session_driver;
175 sdi->status = SR_ST_ACTIVE;
176 if (!session_driver_initialized) {
177 /* first device, init the driver */
178 session_driver_initialized = 1;
179 sdi->driver->init(NULL);
182 sr_session_dev_add(*session, sdi);
183 (*session)->owned_devs = g_slist_append(
184 (*session)->owned_devs, sdi);
185 sdi->driver->config_set(SR_CONF_SESSIONFILE,
186 g_variant_new_string(filename), sdi, NULL);
187 sdi->driver->config_set(SR_CONF_CAPTUREFILE,
188 g_variant_new_string(val), sdi, NULL);
189 g_ptr_array_add(capturefiles, val);
190 } else if (!strcmp(keys[j], "samplerate")) {
195 sr_parse_sizestring(val, &tmp_u64);
196 sdi->driver->config_set(SR_CONF_SAMPLERATE,
197 g_variant_new_uint64(tmp_u64), sdi, NULL);
198 } else if (!strcmp(keys[j], "unitsize")) {
203 tmp_u64 = strtoull(val, NULL, 10);
204 sdi->driver->config_set(SR_CONF_CAPTURE_UNITSIZE,
205 g_variant_new_uint64(tmp_u64), sdi, NULL);
206 } else if (!strcmp(keys[j], "total probes")) {
211 total_channels = strtoull(val, NULL, 10);
212 sdi->driver->config_set(SR_CONF_NUM_LOGIC_CHANNELS,
213 g_variant_new_uint64(total_channels), sdi, NULL);
214 for (p = 0; p < total_channels; p++) {
215 snprintf(channelname, SR_MAX_CHANNELNAME_LEN, "%" PRIu64, p);
216 if (!(ch = sr_channel_new(p, SR_CHANNEL_LOGIC, TRUE,
219 sdi->channels = g_slist_append(sdi->channels, ch);
221 } else if (!strncmp(keys[j], "probe", 5)) {
227 tmp_u64 = strtoul(keys[j]+5, NULL, 10);
228 /* sr_session_save() */
229 sr_dev_channel_name_set(sdi, tmp_u64 - 1, val);
233 /* Disable channels not specifically listed. */
235 for (p = enabled_channels; p < total_channels; p++)
236 sr_dev_channel_enable(sdi, p, FALSE);
239 g_strfreev(sections);
246 * Save a session to the specified file.
248 * @param session The session to save to the specified file. Must not be NULL.
249 * @param filename The name of the filename to save the session as.
251 * @param sdi The device instance from which the data was captured.
252 * @param buf The data to be saved.
253 * @param unitsize The number of bytes per sample.
254 * @param units The number of samples.
256 * @retval SR_OK Success
257 * @retval SR_ERR_ARG Invalid arguments
258 * @retval SR_ERR Other errors
262 SR_API int sr_session_save(struct sr_session *session, const char *filename,
263 const struct sr_dev_inst *sdi, unsigned char *buf, int unitsize,
266 struct sr_channel *ch;
271 char **channel_names;
274 if (sr_dev_has_option(sdi, SR_CONF_SAMPLERATE)) {
275 if (sr_config_get(sdi->driver, sdi, NULL,
276 SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
277 samplerate = g_variant_get_uint64(gvar);
278 g_variant_unref(gvar);
282 channel_names = g_malloc0(sizeof(char *) * (g_slist_length(sdi->channels) + 1));
284 for (l = sdi->channels; l; l = l->next) {
286 if (ch->type != SR_CHANNEL_LOGIC)
288 if (ch->enabled != TRUE)
292 /* Just borrowing the ptr. */
293 channel_names[cnt++] = ch->name;
296 if ((ret = sr_session_save_init(session, filename, samplerate,
297 channel_names)) != SR_OK)
300 ret = sr_session_append(session, filename, buf, unitsize, units);
306 * Initialize a saved session file.
308 * @param session The session to use. Must not be NULL.
309 * @param filename The name of the filename to save the session as.
311 * @param samplerate The samplerate to store for this session.
312 * @param channels A NULL-terminated array of strings containing the names
313 * of all the channels active in this session.
315 * @retval SR_OK Success
316 * @retval SR_ERR_ARG Invalid arguments
317 * @retval SR_ERR Other errors
321 SR_API int sr_session_save_init(struct sr_session *session,
322 const char *filename, uint64_t samplerate, char **channels)
326 struct zip_source *versrc, *metasrc;
327 int tmpfile, cnt, ret, i;
328 char version[1], metafile[32], *s;
333 sr_err("%s: filename was NULL", __func__);
337 /* Quietly delete it first, libzip wants replace ops otherwise. */
339 if (!(zipfile = zip_open(filename, ZIP_CREATE, &ret)))
344 if (!(versrc = zip_source_buffer(zipfile, version, 1, 0)))
346 if (zip_add(zipfile, "version", versrc) == -1) {
347 sr_info("error saving version into zipfile: %s",
348 zip_strerror(zipfile));
352 /* init "metadata" */
353 strcpy(metafile, "sigrok-meta-XXXXXX");
354 if ((tmpfile = g_mkstemp(metafile)) == -1)
357 meta = g_fopen(metafile, "wb");
358 fprintf(meta, "[global]\n");
359 fprintf(meta, "sigrok version = %s\n", PACKAGE_VERSION);
362 fprintf(meta, "[device 1]\n");
365 fprintf(meta, "capturefile = logic-1\n");
367 for (i = 0; channels[i]; i++)
369 fprintf(meta, "total probes = %d\n", cnt);
370 s = sr_samplerate_string(samplerate);
371 fprintf(meta, "samplerate = %s\n", s);
374 for (i = 0; channels[i]; i++)
375 fprintf(meta, "probe%d = %s\n", i + 1, channels[i]);
379 if (!(metasrc = zip_source_file(zipfile, metafile, 0, -1))) {
383 if (zip_add(zipfile, "metadata", metasrc) == -1) {
388 if ((ret = zip_close(zipfile)) == -1) {
389 sr_info("error saving zipfile: %s", zip_strerror(zipfile));
400 * Append data to an existing session file.
402 * The session file must have been created with sr_session_save_init()
403 * or sr_session_save() beforehand.
405 * @param session The session to use. Must not be NULL.
406 * @param filename The name of the filename to append to. Must not be NULL.
407 * @param buf The data to be appended.
408 * @param unitsize The number of bytes per sample.
409 * @param units The number of samples.
411 * @retval SR_OK Success
412 * @retval SR_ERR_ARG Invalid arguments
413 * @retval SR_ERR Other errors
417 SR_API int sr_session_append(struct sr_session *session, const char *filename,
418 unsigned char *buf, int unitsize, int units)
421 struct zip_source *logicsrc;
422 zip_int64_t num_files;
425 struct zip_source *metasrc;
429 int chunk_num, next_chunk_num, tmpfile, ret, i;
430 const char *entry_name;
431 char *metafile, tmpname[32], chunkname[16];
435 if ((ret = sr_sessionfile_check(filename)) != SR_OK)
438 if (!(archive = zip_open(filename, 0, &ret)))
441 if (zip_stat(archive, "metadata", 0, &zs) == -1)
444 metafile = g_malloc(zs.size);
445 zf = zip_fopen_index(archive, zs.index, 0);
446 zip_fread(zf, metafile, zs.size);
450 * If the file was only initialized but doesn't yet have any
451 * data it in, it won't have a unitsize field in metadata yet.
454 kf = g_key_file_new();
455 if (!g_key_file_load_from_data(kf, metafile, zs.size, 0, &error)) {
456 sr_err("Failed to parse metadata: %s.", error->message);
461 if (!g_key_file_has_key(kf, "device 1", "unitsize", &error)) {
462 if (error && error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND) {
463 sr_err("Failed to check unitsize key: %s", error ? error->message : "?");
466 /* Add unitsize field. */
467 g_key_file_set_integer(kf, "device 1", "unitsize", unitsize);
468 metafile = g_key_file_to_data(kf, &len, &error);
469 strcpy(tmpname, "sigrok-meta-XXXXXX");
470 if ((tmpfile = g_mkstemp(tmpname)) == -1)
472 if (write(tmpfile, metafile, len) < 0) {
473 sr_dbg("Failed to create new metadata: %s", strerror(errno));
479 if (!(metasrc = zip_source_file(archive, tmpname, 0, -1))) {
480 sr_err("Failed to create zip source for metadata.");
485 if (zip_replace(archive, zs.index, metasrc) == -1) {
486 sr_err("Failed to replace metadata file.");
496 num_files = zip_get_num_entries(archive, 0);
497 for (i = 0; i < num_files; i++) {
498 entry_name = zip_get_name(archive, i, 0);
499 if (strncmp(entry_name, "logic-1", 7))
501 if (strlen(entry_name) == 7) {
502 /* This file has no extra chunks, just a single "logic-1".
503 * Rename it to "logic-1-1" * and continue with chunk 2. */
504 if (zip_rename(archive, i, "logic-1-1") == -1) {
505 sr_err("Failed to rename 'logic-1' to 'logic-1-1'.");
511 } else if (strlen(entry_name) > 8 && entry_name[7] == '-') {
512 chunk_num = strtoull(entry_name + 8, NULL, 10);
513 if (chunk_num >= next_chunk_num)
514 next_chunk_num = chunk_num + 1;
517 snprintf(chunkname, 15, "logic-1-%d", next_chunk_num);
518 if (!(logicsrc = zip_source_buffer(archive, buf, units * unitsize, FALSE))) {
522 if (zip_add(archive, chunkname, logicsrc) == -1) {
526 if ((ret = zip_close(archive)) == -1) {
527 sr_info("error saving session file: %s", zip_strerror(archive));