]> sigrok.org Git - libsigrok.git/blame - session_file.c
remove datastore functionality
[libsigrok.git] / session_file.c
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1/*
2 * This file is part of the sigrok project.
3 *
c73d2ea4 4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
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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 <string.h>
21#include <stdlib.h>
22#include <unistd.h>
23#include <zip.h>
24#include <glib.h>
3bbd9849 25#include <glib/gstdio.h>
545f9786 26#include "config.h" /* Needed for PACKAGE_VERSION and others. */
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27#include "libsigrok.h"
28#include "libsigrok-internal.h"
7d658874 29
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30/* Message logging helpers with driver-specific prefix string. */
31#define DRIVER_LOG_DOMAIN "session-file: "
32#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
33#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
34#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
35#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
36#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
37#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
38
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39/**
40 * @file
41 *
42 * Loading and saving libsigrok session files.
43 */
44
7b870c38 45/**
777e2035 46 * @addtogroup grp_session
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47 *
48 * @{
49 */
50
2872d21e 51extern struct sr_session *session;
c09f0b57 52extern SR_PRIV struct sr_dev_driver session_driver;
7d658874 53
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54/**
55 * Load the session from the specified filename.
56 *
57 * @param filename The name of the session file to load. Must not be NULL.
58 *
59 * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments,
60 * SR_ERR_MALLOC upon memory allocation errors, or SR_ERR upon
61 * other errors.
62 */
1a081ca6 63SR_API int sr_session_load(const char *filename)
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64{
65 GKeyFile *kf;
66 GPtrArray *capturefiles;
67 struct zip *archive;
68 struct zip_file *zf;
69 struct zip_stat zs;
4d684427 70 struct sr_dev_inst *sdi;
1afe8989 71 struct sr_probe *probe;
c1864d55 72 int ret, probenum, devcnt, version, i, j;
7d658874 73 uint64_t tmp_u64, total_probes, enabled_probes, p;
c1864d55 74 char **sections, **keys, *metafile, *val, s[11];
c37d2b1b 75 char probename[SR_MAX_PROBENAME_LEN + 1];
7d658874 76
9f45fb3a 77 if (!filename) {
a885ce3e 78 sr_err("%s: filename was NULL", __func__);
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79 return SR_ERR_ARG;
80 }
81
ebc34738 82 if (!(archive = zip_open(filename, 0, &ret))) {
a885ce3e 83 sr_dbg("Failed to open session file: zip error %d", ret);
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84 return SR_ERR;
85 }
86
87 /* check "version" */
c1864d55 88 version = 0;
7d658874 89 if (!(zf = zip_fopen(archive, "version", 0))) {
a885ce3e 90 sr_dbg("Not a sigrok session file.");
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91 return SR_ERR;
92 }
c1864d55 93 if ((ret = zip_fread(zf, s, 10)) == -1) {
a885ce3e 94 sr_dbg("Not a valid sigrok session file.");
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95 return SR_ERR;
96 }
97 zip_fclose(zf);
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98 s[ret] = 0;
99 version = strtoull(s, NULL, 10);
100 if (version != 1) {
a885ce3e 101 sr_dbg("Not a valid sigrok session file version.");
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102 return SR_ERR;
103 }
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104
105 /* read "metadata" */
106 if (zip_stat(archive, "metadata", 0, &zs) == -1) {
a885ce3e 107 sr_dbg("Not a valid sigrok session file.");
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108 return SR_ERR;
109 }
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110
111 if (!(metafile = g_try_malloc(zs.size))) {
a885ce3e 112 sr_err("%s: metafile malloc failed", __func__);
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113 return SR_ERR_MALLOC;
114 }
115
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116 zf = zip_fopen_index(archive, zs.index, 0);
117 zip_fread(zf, metafile, zs.size);
118 zip_fclose(zf);
119
120 kf = g_key_file_new();
121 if (!g_key_file_load_from_data(kf, metafile, zs.size, 0, NULL)) {
a885ce3e 122 sr_dbg("Failed to parse metadata.");
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123 return SR_ERR;
124 }
125
2285cf9b 126 sr_session_new();
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127
128 devcnt = 0;
129 capturefiles = g_ptr_array_new_with_free_func(g_free);
130 sections = g_key_file_get_groups(kf, NULL);
131 for (i = 0; sections[i]; i++) {
132 if (!strcmp(sections[i], "global"))
133 /* nothing really interesting in here yet */
134 continue;
135 if (!strncmp(sections[i], "device ", 7)) {
136 /* device section */
4d684427 137 sdi = NULL;
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138 enabled_probes = 0;
139 keys = g_key_file_get_keys(kf, sections[i], NULL, NULL);
140 for (j = 0; keys[j]; j++) {
141 val = g_key_file_get_string(kf, sections[i], keys[j], NULL);
142 if (!strcmp(keys[j], "capturefile")) {
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143 sdi = sr_dev_inst_new(devcnt, SR_ST_ACTIVE, NULL, NULL, NULL);
144 sdi->driver = &session_driver;
7d658874 145 if (devcnt == 0)
c09f0b57 146 /* first device, init the driver */
44fc870c 147 sdi->driver->init(NULL);
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148 sr_session_dev_add(sdi);
149 sdi->driver->dev_config_set(sdi, SR_HWCAP_SESSIONFILE, filename);
150 sdi->driver->dev_config_set(sdi, SR_HWCAP_CAPTUREFILE, val);
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151 g_ptr_array_add(capturefiles, val);
152 } else if (!strcmp(keys[j], "samplerate")) {
f64c1414 153 sr_parse_sizestring(val, &tmp_u64);
4d684427 154 sdi->driver->dev_config_set(sdi, SR_HWCAP_SAMPLERATE, &tmp_u64);
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155 } else if (!strcmp(keys[j], "unitsize")) {
156 tmp_u64 = strtoull(val, NULL, 10);
4d684427 157 sdi->driver->dev_config_set(sdi, SR_HWCAP_CAPTURE_UNITSIZE, &tmp_u64);
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158 } else if (!strcmp(keys[j], "total probes")) {
159 total_probes = strtoull(val, NULL, 10);
4d684427 160 sdi->driver->dev_config_set(sdi, SR_HWCAP_CAPTURE_NUM_PROBES, &total_probes);
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161 for (p = 0; p < total_probes; p++) {
162 snprintf(probename, SR_MAX_PROBENAME_LEN, "%" PRIu64, p);
fb381e4d 163 if (!(probe = sr_probe_new(p, SR_PROBE_LOGIC, TRUE,
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164 probename)))
165 return SR_ERR;
166 sdi->probes = g_slist_append(sdi->probes, probe);
464d12c7 167 }
7d658874 168 } else if (!strncmp(keys[j], "probe", 5)) {
4d684427 169 if (!sdi)
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170 continue;
171 enabled_probes++;
172 tmp_u64 = strtoul(keys[j]+5, NULL, 10);
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173 /* sr_session_save() */
174 sr_dev_probe_name_set(sdi, tmp_u64 - 1, val);
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175 } else if (!strncmp(keys[j], "trigger", 7)) {
176 probenum = strtoul(keys[j]+7, NULL, 10);
4d684427 177 sr_dev_trigger_set(sdi, probenum, val);
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178 }
179 }
180 g_strfreev(keys);
fb381e4d 181 /* Disable probes not specifically listed. */
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182 for (p = enabled_probes; p < total_probes; p++)
183 sr_dev_probe_enable(sdi, p, FALSE);
7d658874 184 }
4d684427 185 devcnt++;
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186 }
187 g_strfreev(sections);
188 g_key_file_free(kf);
189
190 return SR_OK;
191}
192
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193/**
194 * Save the current session to the specified file.
195 *
196 * @param filename The name of the file where to save the current session.
197 * Must not be NULL.
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198 * @param sdi The device instance from which the data was captured.
199 * @param ds The datastore where the session's captured data was stored.
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200 *
201 * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or SR_ERR
202 * upon other errors.
203 */
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204SR_API int sr_session_save(const char *filename,
205 const struct sr_dev_inst *sdi, struct sr_datastore *ds)
7d658874 206{
056be071 207 GSList *l, *d;
7d658874 208 FILE *meta;
1afe8989 209 struct sr_probe *probe;
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210 struct zip *zipfile;
211 struct zip_source *versrc, *metasrc, *logicsrc;
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212 int bufcnt, tmpfile, ret, probecnt;
213 uint64_t *samplerate;
4a1b18f8 214 char version[1], rawname[16], metafile[32], *buf, *s;
7d658874 215
9f45fb3a 216 if (!filename) {
a885ce3e 217 sr_err("%s: filename was NULL", __func__);
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218 return SR_ERR_ARG;
219 }
220
7d658874 221 /* Quietly delete it first, libzip wants replace ops otherwise. */
4a1b18f8 222 unlink(filename);
ebc34738 223 if (!(zipfile = zip_open(filename, ZIP_CREATE, &ret)))
7d658874 224 return SR_ERR;
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225
226 /* "version" */
227 version[0] = '1';
228 if (!(versrc = zip_source_buffer(zipfile, version, 1, 0)))
229 return SR_ERR;
230 if (zip_add(zipfile, "version", versrc) == -1) {
a885ce3e 231 sr_info("error saving version into zipfile: %s",
b08024a8 232 zip_strerror(zipfile));
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233 return SR_ERR;
234 }
235
236 /* init "metadata" */
237 strcpy(metafile, "sigrok-meta-XXXXXX");
238 if ((tmpfile = g_mkstemp(metafile)) == -1)
239 return SR_ERR;
240 close(tmpfile);
868d8cef 241 meta = g_fopen(metafile, "wb");
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242 fprintf(meta, "[global]\n");
243 fprintf(meta, "sigrok version = %s\n", PACKAGE_VERSION);
7d658874 244
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245 /* metadata */
246 fprintf(meta, "[device 1]\n");
247 if (sdi->driver)
248 fprintf(meta, "driver = %s\n", sdi->driver->name);
7d658874 249
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250 /* metadata */
251 fprintf(meta, "capturefile = logic-1\n");
252 fprintf(meta, "unitsize = %d\n", ds->ds_unitsize);
253 fprintf(meta, "total probes = %d\n", g_slist_length(sdi->probes));
254 if (sr_dev_has_hwcap(sdi, SR_HWCAP_SAMPLERATE)) {
255 if (sr_info_get(sdi->driver, SR_DI_CUR_SAMPLERATE,
256 (const void **)&samplerate, sdi) == SR_OK) {
257 s = sr_samplerate_string(*samplerate);
258 fprintf(meta, "samplerate = %s\n", s);
259 g_free(s);
260 }
261 }
262 probecnt = 1;
263 for (l = sdi->probes; l; l = l->next) {
264 probe = l->data;
265 if (probe->enabled) {
266 if (probe->name)
267 fprintf(meta, "probe%d = %s\n", probecnt, probe->name);
268 if (probe->trigger)
269 fprintf(meta, " trigger%d = %s\n", probecnt, probe->trigger);
270 probecnt++;
271 }
272 }
7d658874 273
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274 /* dump datastore into logic-n */
275 buf = g_try_malloc(ds->num_units * ds->ds_unitsize +
276 DATASTORE_CHUNKSIZE);
277 if (!buf) {
a885ce3e 278 sr_err("%s: buf malloc failed", __func__);
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279 return SR_ERR_MALLOC;
280 }
133a37bf 281
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282 bufcnt = 0;
283 for (d = ds->chunklist; d; d = d->next) {
284 memcpy(buf + bufcnt, d->data,
285 DATASTORE_CHUNKSIZE);
286 bufcnt += DATASTORE_CHUNKSIZE;
7d658874 287 }
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288 if (!(logicsrc = zip_source_buffer(zipfile, buf,
289 ds->num_units * ds->ds_unitsize, TRUE)))
290 return SR_ERR;
291 snprintf(rawname, 15, "logic-1");
292 if (zip_add(zipfile, rawname, logicsrc) == -1)
293 return SR_ERR;
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294 fclose(meta);
295
296 if (!(metasrc = zip_source_file(zipfile, metafile, 0, -1)))
297 return SR_ERR;
298 if (zip_add(zipfile, "metadata", metasrc) == -1)
299 return SR_ERR;
300
301 if ((ret = zip_close(zipfile)) == -1) {
a885ce3e 302 sr_info("error saving zipfile: %s", zip_strerror(zipfile));
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303 return SR_ERR;
304 }
305
306 unlink(metafile);
307
308 return SR_OK;
309}
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310
311/** @} */