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 struct sr_session *session;
50 extern SR_PRIV struct sr_dev_driver session_driver;
53 SR_PRIV int sr_sessionfile_check(const char *filename)
65 if (stat(filename, &st) == -1) {
66 sr_err("Couldn't stat %s: %s", filename, strerror(errno));
70 if (!(archive = zip_open(filename, 0, &ret)))
71 /* No logging: this can be used just to check if it's
72 * 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.");
102 * Load the session from the specified filename.
104 * @param filename The name of the session file to load. Must not be NULL.
105 * @param session The session to load the file into. Must not be NULL.
107 * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments,
108 * SR_ERR_MALLOC upon memory allocation errors, or SR_ERR upon
111 SR_API int sr_session_load(const char *filename, struct sr_session **session)
114 GPtrArray *capturefiles;
118 struct sr_dev_inst *sdi;
119 struct sr_channel *ch;
120 int devcnt, ret, i, j;
121 uint64_t tmp_u64, total_channels, enabled_channels, p;
122 char **sections, **keys, *metafile, *val;
123 char channelname[SR_MAX_CHANNELNAME_LEN + 1];
125 if ((ret = sr_sessionfile_check(filename)) != SR_OK)
128 if (!(archive = zip_open(filename, 0, &ret)))
131 if (zip_stat(archive, "metadata", 0, &zs) == -1)
134 if (!(metafile = g_try_malloc(zs.size))) {
135 sr_err("%s: metafile malloc failed", __func__);
136 return SR_ERR_MALLOC;
139 zf = zip_fopen_index(archive, zs.index, 0);
140 zip_fread(zf, metafile, zs.size);
143 kf = g_key_file_new();
144 if (!g_key_file_load_from_data(kf, metafile, zs.size, 0, NULL)) {
145 sr_dbg("Failed to parse metadata.");
149 if ((ret = sr_session_new(session)) != SR_OK)
153 capturefiles = g_ptr_array_new_with_free_func(g_free);
154 sections = g_key_file_get_groups(kf, NULL);
155 for (i = 0; sections[i]; i++) {
156 if (!strcmp(sections[i], "global"))
157 /* nothing really interesting in here yet */
159 if (!strncmp(sections[i], "device ", 7)) {
162 enabled_channels = total_channels = 0;
163 keys = g_key_file_get_keys(kf, sections[i], NULL, NULL);
164 for (j = 0; keys[j]; j++) {
165 val = g_key_file_get_string(kf, sections[i], keys[j], NULL);
166 if (!strcmp(keys[j], "capturefile")) {
167 sdi = sr_dev_inst_new(devcnt, SR_ST_ACTIVE, NULL, NULL, NULL);
168 sdi->driver = &session_driver;
170 /* first device, init the driver */
171 sdi->driver->init(NULL);
173 sr_session_dev_add(*session, sdi);
174 sdi->driver->config_set(SR_CONF_SESSIONFILE,
175 g_variant_new_string(filename), sdi, NULL);
176 sdi->driver->config_set(SR_CONF_CAPTUREFILE,
177 g_variant_new_string(val), sdi, NULL);
178 g_ptr_array_add(capturefiles, val);
179 } else if (!strcmp(keys[j], "samplerate")) {
180 sr_parse_sizestring(val, &tmp_u64);
181 sdi->driver->config_set(SR_CONF_SAMPLERATE,
182 g_variant_new_uint64(tmp_u64), sdi, NULL);
183 } else if (!strcmp(keys[j], "unitsize")) {
184 tmp_u64 = strtoull(val, NULL, 10);
185 sdi->driver->config_set(SR_CONF_CAPTURE_UNITSIZE,
186 g_variant_new_uint64(tmp_u64), sdi, NULL);
187 } else if (!strcmp(keys[j], "total probes")) {
188 total_channels = strtoull(val, NULL, 10);
189 sdi->driver->config_set(SR_CONF_NUM_LOGIC_CHANNELS,
190 g_variant_new_uint64(total_channels), sdi, NULL);
191 for (p = 0; p < total_channels; p++) {
192 snprintf(channelname, SR_MAX_CHANNELNAME_LEN, "%" PRIu64, p);
193 if (!(ch = sr_channel_new(p, SR_CHANNEL_LOGIC, TRUE,
196 sdi->channels = g_slist_append(sdi->channels, ch);
198 } else if (!strncmp(keys[j], "probe", 5)) {
202 tmp_u64 = strtoul(keys[j]+5, NULL, 10);
203 /* sr_session_save() */
204 sr_dev_channel_name_set(sdi, tmp_u64 - 1, val);
208 /* Disable channels not specifically listed. */
210 for (p = enabled_channels; p < total_channels; p++)
211 sr_dev_channel_enable(sdi, p, FALSE);
215 g_strfreev(sections);
222 * Save a session to the specified file.
224 * @param session The session to save to the specified file. Must not be NULL.
225 * @param filename The name of the filename to save the session as.
227 * @param sdi The device instance from which the data was captured.
228 * @param buf The data to be saved.
229 * @param unitsize The number of bytes per sample.
230 * @param units The number of samples.
232 * @retval SR_OK Success
233 * @retval SR_ERR_ARG Invalid arguments
234 * @retval SR_ERR Other errors
238 SR_API int sr_session_save(struct sr_session *session, const char *filename,
239 const struct sr_dev_inst *sdi, unsigned char *buf, int unitsize,
242 struct sr_channel *ch;
247 char **channel_names;
250 if (sr_dev_has_option(sdi, SR_CONF_SAMPLERATE)) {
251 if (sr_config_get(sdi->driver, sdi, NULL,
252 SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
253 samplerate = g_variant_get_uint64(gvar);
254 g_variant_unref(gvar);
258 channel_names = g_malloc0(sizeof(char *) * (g_slist_length(sdi->channels) + 1));
260 for (l = sdi->channels; l; l = l->next) {
262 if (ch->type != SR_CHANNEL_LOGIC)
264 if (ch->enabled != TRUE)
268 /* Just borrowing the ptr. */
269 channel_names[cnt++] = ch->name;
272 if ((ret = sr_session_save_init(session, filename, samplerate,
273 channel_names)) != SR_OK)
276 ret = sr_session_append(session, filename, buf, unitsize, units);
282 * Initialize a saved session file.
284 * @param session The session to use. Must not be NULL.
285 * @param filename The name of the filename to save the session as.
287 * @param samplerate The samplerate to store for this session.
288 * @param channels A NULL-terminated array of strings containing the names
289 * of all the channels active in this session.
291 * @retval SR_OK Success
292 * @retval SR_ERR_ARG Invalid arguments
293 * @retval SR_ERR Other errors
297 SR_API int sr_session_save_init(struct sr_session *session,
298 const char *filename, uint64_t samplerate, char **channels)
302 struct zip_source *versrc, *metasrc;
303 int tmpfile, cnt, ret, i;
304 char version[1], metafile[32], *s;
309 sr_err("%s: filename was NULL", __func__);
313 /* Quietly delete it first, libzip wants replace ops otherwise. */
315 if (!(zipfile = zip_open(filename, ZIP_CREATE, &ret)))
320 if (!(versrc = zip_source_buffer(zipfile, version, 1, 0)))
322 if (zip_add(zipfile, "version", versrc) == -1) {
323 sr_info("error saving version into zipfile: %s",
324 zip_strerror(zipfile));
328 /* init "metadata" */
329 strcpy(metafile, "sigrok-meta-XXXXXX");
330 if ((tmpfile = g_mkstemp(metafile)) == -1)
333 meta = g_fopen(metafile, "wb");
334 fprintf(meta, "[global]\n");
335 fprintf(meta, "sigrok version = %s\n", PACKAGE_VERSION);
338 fprintf(meta, "[device 1]\n");
341 fprintf(meta, "capturefile = logic-1\n");
343 for (i = 0; channels[i]; i++)
345 fprintf(meta, "total probes = %d\n", cnt);
346 s = sr_samplerate_string(samplerate);
347 fprintf(meta, "samplerate = %s\n", s);
350 for (i = 0; channels[i]; i++)
351 fprintf(meta, "probe%d = %s\n", i + 1, channels[i]);
355 if (!(metasrc = zip_source_file(zipfile, metafile, 0, -1))) {
359 if (zip_add(zipfile, "metadata", metasrc) == -1) {
364 if ((ret = zip_close(zipfile)) == -1) {
365 sr_info("error saving zipfile: %s", zip_strerror(zipfile));
376 * Append data to an existing session file.
378 * The session file must have been created with sr_session_save_init()
379 * or sr_session_save() beforehand.
381 * @param session The session to use. Must not be NULL.
382 * @param filename The name of the filename to append to. Must not be NULL.
383 * @param buf The data to be appended.
384 * @param unitsize The number of bytes per sample.
385 * @param units The number of samples.
387 * @retval SR_OK Success
388 * @retval SR_ERR_ARG Invalid arguments
389 * @retval SR_ERR Other errors
393 SR_API int sr_session_append(struct sr_session *session, const char *filename,
394 unsigned char *buf, int unitsize, int units)
397 struct zip_source *logicsrc;
398 zip_int64_t num_files;
401 struct zip_source *metasrc;
405 int chunk_num, next_chunk_num, tmpfile, ret, i;
406 const char *entry_name;
407 char *metafile, tmpname[32], chunkname[16];
411 if ((ret = sr_sessionfile_check(filename)) != SR_OK)
414 if (!(archive = zip_open(filename, 0, &ret)))
417 if (zip_stat(archive, "metadata", 0, &zs) == -1)
420 metafile = g_malloc(zs.size);
421 zf = zip_fopen_index(archive, zs.index, 0);
422 zip_fread(zf, metafile, zs.size);
426 * If the file was only initialized but doesn't yet have any
427 * data it in, it won't have a unitsize field in metadata yet.
430 kf = g_key_file_new();
431 if (!g_key_file_load_from_data(kf, metafile, zs.size, 0, &error)) {
432 sr_err("Failed to parse metadata: %s.", error->message);
437 if (!g_key_file_has_key(kf, "device 1", "unitsize", &error)) {
438 if (error && error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND) {
439 sr_err("Failed to check unitsize key: %s", error ? error->message : "?");
442 /* Add unitsize field. */
443 g_key_file_set_integer(kf, "device 1", "unitsize", unitsize);
444 metafile = g_key_file_to_data(kf, &len, &error);
445 strcpy(tmpname, "sigrok-meta-XXXXXX");
446 if ((tmpfile = g_mkstemp(tmpname)) == -1)
448 if (write(tmpfile, metafile, len) < 0) {
449 sr_dbg("Failed to create new metadata: %s", strerror(errno));
455 if (!(metasrc = zip_source_file(archive, tmpname, 0, -1))) {
456 sr_err("Failed to create zip source for metadata.");
461 if (zip_replace(archive, zs.index, metasrc) == -1) {
462 sr_err("Failed to replace metadata file.");
472 num_files = zip_get_num_entries(archive, 0);
473 for (i = 0; i < num_files; i++) {
474 entry_name = zip_get_name(archive, i, 0);
475 if (strncmp(entry_name, "logic-1", 7))
477 if (strlen(entry_name) == 7) {
478 /* This file has no extra chunks, just a single "logic-1".
479 * Rename it to "logic-1-1" * and continue with chunk 2. */
480 if (zip_rename(archive, i, "logic-1-1") == -1) {
481 sr_err("Failed to rename 'logic-1' to 'logic-1-1'.");
487 } else if (strlen(entry_name) > 8 && entry_name[7] == '-') {
488 chunk_num = strtoull(entry_name + 8, NULL, 10);
489 if (chunk_num >= next_chunk_num)
490 next_chunk_num = chunk_num + 1;
493 snprintf(chunkname, 15, "logic-1-%d", next_chunk_num);
494 if (!(logicsrc = zip_source_buffer(archive, buf, units * unitsize, FALSE))) {
498 if (zip_add(archive, chunkname, logicsrc) == -1) {
502 if ((ret = zip_close(archive)) == -1) {
503 sr_info("error saving session file: %s", zip_strerror(archive));