2 * This file is part of the libsigrok project.
4 * Copyright (C) 2014 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/>.
25 #include <glib/gstdio.h>
27 #include <libsigrok/libsigrok.h>
28 #include "libsigrok-internal.h"
30 #define LOG_PREFIX "output/srzip"
36 gint min_analog_index;
39 static int init(struct sr_output *o, GHashTable *options)
41 struct out_context *outc;
45 if (!o->filename || o->filename[0] == '\0') {
46 sr_info("srzip output module requires a file name, cannot save.");
50 outc = g_malloc0(sizeof(struct out_context));
51 outc->filename = g_strdup(o->filename);
57 static int zip_create(const struct sr_output *o)
59 struct out_context *outc;
61 struct zip_source *versrc, *metasrc;
62 struct sr_channel *ch;
69 guint logic_channels = 0, analog_channels = 0;
73 if (outc->samplerate == 0 && sr_config_get(o->sdi->driver, o->sdi, NULL,
74 SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
75 outc->samplerate = g_variant_get_uint64(gvar);
76 g_variant_unref(gvar);
79 /* Quietly delete it first, libzip wants replace ops otherwise. */
80 g_unlink(outc->filename);
81 zipfile = zip_open(outc->filename, ZIP_CREATE, NULL);
86 versrc = zip_source_buffer(zipfile, "2", 1, FALSE);
87 if (zip_add(zipfile, "version", versrc) < 0) {
88 sr_err("Error saving version into zipfile: %s",
89 zip_strerror(zipfile));
90 zip_source_free(versrc);
96 meta = g_key_file_new();
98 g_key_file_set_string(meta, "global", "sigrok version",
99 SR_PACKAGE_VERSION_STRING);
101 devgroup = "device 1";
102 g_key_file_set_string(meta, devgroup, "capturefile", "logic-1");
104 s = sr_samplerate_string(outc->samplerate);
105 g_key_file_set_string(meta, devgroup, "samplerate", s);
108 outc->min_analog_index = -1;
110 for (l = o->sdi->channels; l; l = l->next) {
113 case SR_CHANNEL_LOGIC:
116 case SR_CHANNEL_ANALOG:
117 if (outc->min_analog_index == -1 ||
118 ch->index < outc->min_analog_index)
119 outc->min_analog_index = ch->index;
125 g_key_file_set_integer(meta, devgroup, "total probes", logic_channels);
126 g_key_file_set_integer(meta, devgroup, "total analog", analog_channels);
128 for (l = o->sdi->channels; l; l = l->next) {
131 case SR_CHANNEL_LOGIC:
132 s = g_strdup_printf("probe%d", ch->index + 1);
134 case SR_CHANNEL_ANALOG:
135 s = g_strdup_printf("analog%d",
136 ch->index - outc->min_analog_index + 1);
140 g_key_file_set_string(meta, devgroup, s, ch->name);
144 metabuf = g_key_file_to_data(meta, &metalen, NULL);
145 g_key_file_free(meta);
147 metasrc = zip_source_buffer(zipfile, metabuf, metalen, FALSE);
148 if (zip_add(zipfile, "metadata", metasrc) < 0) {
149 sr_err("Error saving metadata into zipfile: %s",
150 zip_strerror(zipfile));
151 zip_source_free(metasrc);
152 zip_discard(zipfile);
157 if (zip_close(zipfile) < 0) {
158 sr_err("Error saving zipfile: %s", zip_strerror(zipfile));
159 zip_discard(zipfile);
168 static int zip_append(const struct sr_output *o, unsigned char *buf,
169 int unitsize, int length)
171 struct out_context *outc;
173 struct zip_source *logicsrc;
174 int64_t i, num_files;
176 struct zip_source *metasrc;
180 const char *entry_name;
184 unsigned int next_chunk_num;
187 if (!(archive = zip_open(outc->filename, 0, NULL)))
190 if (zip_stat(archive, "metadata", 0, &zs) < 0) {
191 sr_err("Failed to open metadata: %s", zip_strerror(archive));
192 zip_discard(archive);
195 kf = sr_sessionfile_read_metadata(archive, &zs);
197 zip_discard(archive);
201 * If the file was only initialized but doesn't yet have any
202 * data it in, it won't have a unitsize field in metadata yet.
206 if (!g_key_file_has_key(kf, "device 1", "unitsize", &error)) {
207 if (error && error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND) {
208 sr_err("Failed to check unitsize key: %s", error->message);
211 zip_discard(archive);
214 g_clear_error(&error);
216 /* Add unitsize field. */
217 g_key_file_set_integer(kf, "device 1", "unitsize", unitsize);
218 metabuf = g_key_file_to_data(kf, &metalen, NULL);
219 metasrc = zip_source_buffer(archive, metabuf, metalen, FALSE);
221 if (zip_replace(archive, zs.index, metasrc) < 0) {
222 sr_err("Failed to replace metadata: %s",
223 zip_strerror(archive));
225 zip_source_free(metasrc);
226 zip_discard(archive);
234 num_files = zip_get_num_entries(archive, 0);
235 for (i = 0; i < num_files; i++) {
236 entry_name = zip_get_name(archive, i, 0);
237 if (!entry_name || strncmp(entry_name, "logic-1", 7) != 0)
239 if (entry_name[7] == '\0') {
240 /* This file has no extra chunks, just a single "logic-1".
241 * Rename it to "logic-1-1" * and continue with chunk 2. */
242 if (zip_rename(archive, i, "logic-1-1") < 0) {
243 sr_err("Failed to rename 'logic-1' to 'logic-1-1': %s",
244 zip_strerror(archive));
245 zip_discard(archive);
251 } else if (entry_name[7] == '-') {
252 chunk_num = g_ascii_strtoull(entry_name + 8, NULL, 10);
253 if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num)
254 next_chunk_num = chunk_num + 1;
258 if (length % unitsize != 0) {
259 sr_warn("Chunk size %d not a multiple of the"
260 " unit size %d.", length, unitsize);
262 logicsrc = zip_source_buffer(archive, buf, length, FALSE);
263 chunkname = g_strdup_printf("logic-1-%u", next_chunk_num);
264 i = zip_add(archive, chunkname, logicsrc);
267 sr_err("Failed to add chunk 'logic-1-%u': %s",
268 next_chunk_num, zip_strerror(archive));
269 zip_source_free(logicsrc);
270 zip_discard(archive);
274 if (zip_close(archive) < 0) {
275 sr_err("Error saving session file: %s", zip_strerror(archive));
276 zip_discard(archive);
285 static int zip_append_analog(const struct sr_output *o,
286 const struct sr_datafeed_analog *analog)
288 struct out_context *outc;
290 struct zip_source *analogsrc;
291 int64_t i, num_files;
294 const char *entry_name;
297 struct sr_channel *channel;
301 unsigned int next_chunk_num;
304 if (!(archive = zip_open(outc->filename, 0, NULL)))
307 if (zip_stat(archive, "metadata", 0, &zs) < 0) {
308 sr_err("Failed to open metadata: %s", zip_strerror(archive));
309 zip_discard(archive);
313 /* TODO: support packets covering multiple channels */
314 if (g_slist_length(analog->meaning->channels) != 1) {
315 sr_err("Analog packets covering multiple channels not supported yet");
318 channel = analog->meaning->channels->data;
320 basename = g_strdup_printf("analog-1-%u",
321 channel->index - outc->min_analog_index + 1);
322 baselen = strlen(basename);
324 num_files = zip_get_num_entries(archive, 0);
325 for (i = 0; i < num_files; i++) {
326 entry_name = zip_get_name(archive, i, 0);
327 if (!entry_name || strncmp(entry_name, basename, baselen) != 0) {
329 } else if (entry_name[baselen] == '-') {
330 chunk_num = g_ascii_strtoull(entry_name + baselen + 1, NULL, 10);
331 if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num)
332 next_chunk_num = chunk_num + 1;
336 chunksize = sizeof(float) * analog->num_samples;
337 if (!(chunkbuf = g_try_malloc(chunksize)))
339 if (sr_analog_to_float(analog, chunkbuf) != SR_OK)
342 analogsrc = zip_source_buffer(archive, chunkbuf, chunksize, FALSE);
343 chunkname = g_strdup_printf("%s-%u", basename, next_chunk_num);
344 i = zip_add(archive, chunkname, analogsrc);
347 sr_err("Failed to add chunk '%s': %s", chunkname, zip_strerror(archive));
348 zip_source_free(analogsrc);
349 zip_discard(archive);
352 if (zip_close(archive) < 0) {
353 sr_err("Error saving session file: %s", zip_strerror(archive));
354 zip_discard(archive);
361 static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet,
364 struct out_context *outc;
365 const struct sr_datafeed_meta *meta;
366 const struct sr_datafeed_logic *logic;
367 const struct sr_datafeed_analog *analog;
368 const struct sr_config *src;
374 if (!o || !o->sdi || !(outc = o->priv))
377 switch (packet->type) {
379 meta = packet->payload;
380 for (l = meta->config; l; l = l->next) {
382 if (src->key != SR_CONF_SAMPLERATE)
384 outc->samplerate = g_variant_get_uint64(src->data);
388 if (!outc->zip_created) {
389 if ((ret = zip_create(o)) != SR_OK)
391 outc->zip_created = TRUE;
393 logic = packet->payload;
394 ret = zip_append(o, logic->data, logic->unitsize, logic->length);
399 if (!outc->zip_created) {
400 if ((ret = zip_create(o)) != SR_OK)
402 outc->zip_created = TRUE;
404 analog = packet->payload;
405 ret = zip_append_analog(o, analog);
414 static struct sr_option options[] = {
418 static const struct sr_option *get_options(void)
421 options[0].def = g_variant_ref_sink(g_variant_new_string(""));
426 static int cleanup(struct sr_output *o)
428 struct out_context *outc;
431 g_variant_unref(options[0].def);
432 g_free(outc->filename);
439 SR_PRIV struct sr_output_module output_srzip = {
442 .desc = "srzip session file",
443 .exts = (const char*[]){"sr", NULL},
444 .flags = SR_OUTPUT_INTERNAL_IO_HANDLING,
445 .options = get_options,