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7d658874 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
7d658874 | 3 | * |
13d8e03c | 4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> |
7d658874 BV |
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 | ||
6ec6c43b | 20 | #include <config.h> |
7d658874 BV |
21 | #include <sys/types.h> |
22 | #include <sys/stat.h> | |
23 | #include <fcntl.h> | |
24 | #include <unistd.h> | |
25 | #include <sys/time.h> | |
26 | #include <zip.h> | |
c1aae900 | 27 | #include <libsigrok/libsigrok.h> |
45c59c8b | 28 | #include "libsigrok-internal.h" |
7d658874 | 29 | |
3544f848 | 30 | #define LOG_PREFIX "virtual-session" |
a885ce3e | 31 | |
7d658874 | 32 | /* size of payloads sent across the session bus */ |
b4bd7088 | 33 | /** @cond PRIVATE */ |
8ff6afc9 | 34 | #define CHUNKSIZE (512 * 1024) |
b4bd7088 | 35 | /** @endcond */ |
7d658874 | 36 | |
102f1239 | 37 | SR_PRIV struct sr_dev_driver session_driver_info; |
102f1239 | 38 | |
bb7ef793 | 39 | struct session_vdev { |
40dda2c3 | 40 | char *sessionfile; |
7d658874 BV |
41 | char *capturefile; |
42 | struct zip *archive; | |
43 | struct zip_file *capfile; | |
cb1e389c | 44 | int bytes_read; |
7d658874 BV |
45 | uint64_t samplerate; |
46 | int unitsize; | |
fca75cbb | 47 | int num_channels; |
b317d1bb | 48 | int num_analog_channels; |
906921ba | 49 | int cur_analog_channel; |
2dc40815 | 50 | GArray *analog_channels; |
f438e0c9 | 51 | int cur_chunk; |
aa48adf9 | 52 | gboolean finished; |
7d658874 BV |
53 | }; |
54 | ||
f254bc4b | 55 | static const uint32_t devopts[] = { |
68ac991d BV |
56 | SR_CONF_CAPTUREFILE | SR_CONF_SET, |
57 | SR_CONF_CAPTURE_UNITSIZE | SR_CONF_GET | SR_CONF_SET, | |
02e49ae5 | 58 | SR_CONF_NUM_LOGIC_CHANNELS | SR_CONF_SET, |
b317d1bb | 59 | SR_CONF_NUM_ANALOG_CHANNELS | SR_CONF_SET, |
68ac991d | 60 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET, |
02e49ae5 | 61 | SR_CONF_SESSIONFILE | SR_CONF_SET, |
7d658874 BV |
62 | }; |
63 | ||
8d4097ff | 64 | static gboolean stream_session_data(struct sr_dev_inst *sdi) |
7d658874 | 65 | { |
bb7ef793 | 66 | struct session_vdev *vdev; |
7d658874 | 67 | struct sr_datafeed_packet packet; |
9c939c51 | 68 | struct sr_datafeed_logic logic; |
2dc40815 | 69 | struct sr_datafeed_analog_old analog; |
f438e0c9 | 70 | struct zip_stat zs; |
7d658874 | 71 | int ret, got_data; |
f438e0c9 BV |
72 | char capturefile[16]; |
73 | void *buf; | |
7d658874 | 74 | |
7d658874 | 75 | got_data = FALSE; |
102f1239 | 76 | vdev = sdi->priv; |
7c69b528 | 77 | |
8d4097ff DE |
78 | if (!vdev->capfile) { |
79 | /* No capture file opened yet, or finished with the last | |
80 | * chunked one. */ | |
7c69b528 | 81 | if (vdev->capturefile && (vdev->cur_chunk == 0)) { |
8d4097ff DE |
82 | /* capturefile is always the unchunked base name. */ |
83 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { | |
84 | /* No chunks, just a single capture file. */ | |
85 | vdev->cur_chunk = 0; | |
86 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
87 | vdev->capturefile, 0))) | |
88 | return FALSE; | |
89 | sr_dbg("Opened %s.", vdev->capturefile); | |
f438e0c9 | 90 | } else { |
8d4097ff DE |
91 | /* Try as first chunk filename. */ |
92 | snprintf(capturefile, 15, "%s-1", vdev->capturefile); | |
f438e0c9 | 93 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { |
8d4097ff | 94 | vdev->cur_chunk = 1; |
f438e0c9 BV |
95 | if (!(vdev->capfile = zip_fopen(vdev->archive, |
96 | capturefile, 0))) | |
97 | return FALSE; | |
98 | sr_dbg("Opened %s.", capturefile); | |
99 | } else { | |
8d4097ff DE |
100 | sr_err("No capture file '%s' in " "session file '%s'.", |
101 | vdev->capturefile, vdev->sessionfile); | |
102 | return FALSE; | |
f438e0c9 BV |
103 | } |
104 | } | |
7d658874 | 105 | } else { |
8d4097ff DE |
106 | /* Capture data is chunked, advance to the next chunk. */ |
107 | vdev->cur_chunk++; | |
108 | snprintf(capturefile, 15, "%s-%d", vdev->capturefile, | |
109 | vdev->cur_chunk); | |
110 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
111 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
112 | capturefile, 0))) | |
113 | return FALSE; | |
114 | sr_dbg("Opened %s.", capturefile); | |
906921ba ML |
115 | } else if (vdev->cur_analog_channel < vdev->num_analog_channels) { |
116 | vdev->capturefile = g_strdup_printf("analog-1-%d", | |
e5b280e4 | 117 | vdev->num_channels + vdev->cur_analog_channel + 1); |
906921ba ML |
118 | vdev->cur_analog_channel++; |
119 | vdev->cur_chunk = 0; | |
120 | return TRUE; | |
f438e0c9 | 121 | } else { |
8d4097ff DE |
122 | /* We got all the chunks, finish up. */ |
123 | return FALSE; | |
f438e0c9 | 124 | } |
7d658874 BV |
125 | } |
126 | } | |
127 | ||
8d4097ff DE |
128 | buf = g_malloc(CHUNKSIZE); |
129 | ||
9cfc695f SA |
130 | /* unitsize is not defined for purely analog session files. */ |
131 | if (vdev->unitsize) | |
132 | ret = zip_fread(vdev->capfile, buf, | |
133 | CHUNKSIZE / vdev->unitsize * vdev->unitsize); | |
134 | else | |
135 | ret = zip_fread(vdev->capfile, buf, CHUNKSIZE); | |
136 | ||
8d4097ff | 137 | if (ret > 0) { |
8d4097ff | 138 | got_data = TRUE; |
2dc40815 ML |
139 | if (vdev->cur_analog_channel != 0) { |
140 | packet.type = SR_DF_ANALOG_OLD; | |
141 | packet.payload = &analog; | |
142 | analog.channels = g_slist_prepend(NULL, | |
143 | g_array_index(vdev->analog_channels, | |
144 | struct sr_channel *, vdev->cur_analog_channel - 1)); | |
145 | analog.num_samples = ret / sizeof(float); | |
146 | analog.mq = SR_MQ_VOLTAGE; | |
147 | analog.unit = SR_UNIT_VOLT; | |
148 | analog.mqflags = SR_MQFLAG_DC; | |
149 | analog.data = (float *) buf; | |
150 | } else { | |
151 | if (ret % vdev->unitsize != 0) | |
152 | sr_warn("Read size %d not a multiple of the" | |
153 | " unit size %d.", ret, vdev->unitsize); | |
154 | packet.type = SR_DF_LOGIC; | |
155 | packet.payload = &logic; | |
156 | logic.length = ret; | |
157 | logic.unitsize = vdev->unitsize; | |
158 | logic.data = buf; | |
159 | } | |
8d4097ff | 160 | vdev->bytes_read += ret; |
102f1239 | 161 | sr_session_send(sdi, &packet); |
8d4097ff DE |
162 | } else { |
163 | /* done with this capture file */ | |
164 | zip_fclose(vdev->capfile); | |
165 | vdev->capfile = NULL; | |
166 | if (vdev->cur_chunk != 0) { | |
167 | /* There might be more chunks, so don't fall through | |
168 | * to the SR_DF_END here. */ | |
169 | got_data = TRUE; | |
170 | } | |
7d658874 | 171 | } |
8d4097ff | 172 | g_free(buf); |
7d658874 | 173 | |
8d4097ff DE |
174 | return got_data; |
175 | } | |
176 | ||
177 | static int receive_data(int fd, int revents, void *cb_data) | |
178 | { | |
179 | struct sr_dev_inst *sdi; | |
180 | struct session_vdev *vdev; | |
181 | struct sr_datafeed_packet packet; | |
182 | ||
183 | (void)fd; | |
184 | (void)revents; | |
185 | ||
186 | sdi = cb_data; | |
187 | vdev = sdi->priv; | |
188 | ||
189 | if (!vdev->finished && !stream_session_data(sdi)) | |
190 | vdev->finished = TRUE; | |
191 | if (!vdev->finished) | |
192 | return G_SOURCE_CONTINUE; | |
193 | ||
194 | if (vdev->capfile) { | |
195 | zip_fclose(vdev->capfile); | |
196 | vdev->capfile = NULL; | |
197 | } | |
198 | if (vdev->archive) { | |
199 | zip_discard(vdev->archive); | |
200 | vdev->archive = NULL; | |
201 | } | |
202 | packet.type = SR_DF_END; | |
203 | packet.payload = NULL; | |
204 | sr_session_send(sdi, &packet); | |
205 | ||
206 | return G_SOURCE_REMOVE; | |
7d658874 BV |
207 | } |
208 | ||
209 | /* driver callbacks */ | |
210 | ||
4f840ce9 | 211 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
7d658874 | 212 | { |
102f1239 | 213 | return std_init(sr_ctx, di, LOG_PREFIX); |
7d658874 BV |
214 | } |
215 | ||
4f840ce9 | 216 | static int dev_clear(const struct sr_dev_driver *di) |
7d658874 | 217 | { |
102f1239 | 218 | struct drv_context *drvc; |
7d658874 BV |
219 | GSList *l; |
220 | ||
41812aca | 221 | drvc = di->context; |
102f1239 | 222 | for (l = drvc->instances; l; l = l->next) |
d3683c42 | 223 | sr_dev_inst_free(l->data); |
102f1239 BV |
224 | g_slist_free(drvc->instances); |
225 | drvc->instances = NULL; | |
805e9640 | 226 | |
57ab7d9f | 227 | return SR_OK; |
7d658874 BV |
228 | } |
229 | ||
6078d2c9 | 230 | static int dev_open(struct sr_dev_inst *sdi) |
7d658874 | 231 | { |
4f840ce9 | 232 | struct sr_dev_driver *di; |
102f1239 | 233 | struct drv_context *drvc; |
aa48adf9 | 234 | struct session_vdev *vdev; |
b53738ba | 235 | |
4f840ce9 | 236 | di = sdi->driver; |
41812aca | 237 | drvc = di->context; |
102f1239 | 238 | vdev = g_malloc0(sizeof(struct session_vdev)); |
aa48adf9 | 239 | sdi->priv = vdev; |
102f1239 | 240 | drvc->instances = g_slist_append(drvc->instances, sdi); |
7d658874 BV |
241 | |
242 | return SR_OK; | |
243 | } | |
244 | ||
aa48adf9 BV |
245 | static int dev_close(struct sr_dev_inst *sdi) |
246 | { | |
8c9d4d67 JH |
247 | const struct session_vdev *const vdev = sdi->priv; |
248 | g_free(vdev->sessionfile); | |
249 | g_free(vdev->capturefile); | |
250 | ||
aa48adf9 BV |
251 | g_free(sdi->priv); |
252 | sdi->priv = NULL; | |
253 | ||
254 | return SR_OK; | |
255 | } | |
256 | ||
584560f1 | 257 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 258 | const struct sr_channel_group *cg) |
7d658874 | 259 | { |
bb7ef793 | 260 | struct session_vdev *vdev; |
7d658874 | 261 | |
53b4680f | 262 | (void)cg; |
8f996b89 | 263 | |
3f2cd87f UH |
264 | if (!sdi) |
265 | return SR_ERR; | |
266 | ||
267 | vdev = sdi->priv; | |
268 | ||
584560f1 | 269 | switch (key) { |
123e1313 | 270 | case SR_CONF_SAMPLERATE: |
3f2cd87f UH |
271 | *data = g_variant_new_uint64(vdev->samplerate); |
272 | break; | |
273 | case SR_CONF_CAPTURE_UNITSIZE: | |
274 | *data = g_variant_new_uint64(vdev->unitsize); | |
387014de BV |
275 | break; |
276 | default: | |
96ea73db | 277 | return SR_ERR_NA; |
387014de | 278 | } |
7d658874 | 279 | |
387014de | 280 | return SR_OK; |
7d658874 BV |
281 | } |
282 | ||
584560f1 | 283 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 284 | const struct sr_channel_group *cg) |
7d658874 | 285 | { |
bb7ef793 | 286 | struct session_vdev *vdev; |
7d658874 | 287 | |
53b4680f | 288 | (void)cg; |
8f996b89 | 289 | |
6f4b1868 | 290 | vdev = sdi->priv; |
7d658874 | 291 | |
584560f1 | 292 | switch (key) { |
1953564a | 293 | case SR_CONF_SAMPLERATE: |
003595ac | 294 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 295 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 296 | break; |
1953564a | 297 | case SR_CONF_SESSIONFILE: |
8c9d4d67 | 298 | g_free(vdev->sessionfile); |
003595ac | 299 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 300 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 301 | break; |
1953564a | 302 | case SR_CONF_CAPTUREFILE: |
8c9d4d67 | 303 | g_free(vdev->capturefile); |
003595ac | 304 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 305 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 306 | break; |
1953564a | 307 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 308 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 309 | break; |
3f239f08 | 310 | case SR_CONF_NUM_LOGIC_CHANNELS: |
2c38a41a | 311 | vdev->num_channels = g_variant_get_int32(data); |
7d658874 | 312 | break; |
b317d1bb ML |
313 | case SR_CONF_NUM_ANALOG_CHANNELS: |
314 | vdev->num_analog_channels = g_variant_get_int32(data); | |
315 | break; | |
7d658874 | 316 | default: |
96ea73db | 317 | return SR_ERR_NA; |
7d658874 BV |
318 | } |
319 | ||
320 | return SR_OK; | |
321 | } | |
322 | ||
584560f1 | 323 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 324 | const struct sr_channel_group *cg) |
9a6517d1 | 325 | { |
9a6517d1 | 326 | (void)sdi; |
53b4680f | 327 | (void)cg; |
9a6517d1 BV |
328 | |
329 | switch (key) { | |
330 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 | 331 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 332 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
9a6517d1 BV |
333 | break; |
334 | default: | |
96ea73db | 335 | return SR_ERR_NA; |
9a6517d1 BV |
336 | } |
337 | ||
338 | return SR_OK; | |
339 | } | |
340 | ||
6078d2c9 | 341 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
7d658874 | 342 | { |
bb7ef793 | 343 | struct session_vdev *vdev; |
ebc34738 | 344 | int ret; |
2dc40815 ML |
345 | GSList *l; |
346 | struct sr_channel *ch; | |
7d658874 | 347 | |
102f1239 | 348 | (void)cb_data; |
7d658874 | 349 | |
102f1239 | 350 | vdev = sdi->priv; |
8c9d4d67 | 351 | vdev->bytes_read = 0; |
906921ba | 352 | vdev->cur_analog_channel = 0; |
2dc40815 ML |
353 | vdev->analog_channels = g_array_sized_new(FALSE, FALSE, |
354 | sizeof(struct sr_channel *), vdev->num_analog_channels); | |
355 | for (l = sdi->channels; l; l = l->next) { | |
356 | ch = l->data; | |
357 | if (ch->type == SR_CHANNEL_ANALOG) | |
358 | g_array_append_val(vdev->analog_channels, ch); | |
359 | } | |
8c9d4d67 JH |
360 | vdev->cur_chunk = 0; |
361 | vdev->finished = FALSE; | |
362 | ||
a885ce3e | 363 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 364 | vdev->capturefile); |
7d658874 | 365 | |
40dda2c3 | 366 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 367 | sr_err("Failed to open session file '%s': " |
9d122af8 | 368 | "zip error %d.", vdev->sessionfile, ret); |
7d658874 BV |
369 | return SR_ERR; |
370 | } | |
371 | ||
4afdfd46 | 372 | /* Send header packet to the session bus. */ |
102f1239 | 373 | std_session_send_df_header(sdi, LOG_PREFIX); |
4afdfd46 | 374 | |
7d658874 | 375 | /* freewheeling source */ |
102f1239 | 376 | sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi); |
7d658874 | 377 | |
7d658874 BV |
378 | return SR_OK; |
379 | } | |
380 | ||
8d4097ff DE |
381 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
382 | { | |
383 | struct session_vdev *vdev; | |
384 | ||
385 | (void)cb_data; | |
386 | vdev = sdi->priv; | |
387 | ||
388 | vdev->finished = TRUE; | |
389 | ||
390 | return SR_OK; | |
391 | } | |
392 | ||
b4bd7088 | 393 | /** @private */ |
c09f0b57 | 394 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 395 | .name = "virtual-session", |
5097b0d0 UH |
396 | .longname = "Session-emulating driver", |
397 | .api_version = 1, | |
6078d2c9 | 398 | .init = init, |
824fba03 | 399 | .cleanup = dev_clear, |
96ea73db UH |
400 | .scan = NULL, |
401 | .dev_list = NULL, | |
824fba03 | 402 | .dev_clear = dev_clear, |
035a1078 BV |
403 | .config_get = config_get, |
404 | .config_set = config_set, | |
9a6517d1 | 405 | .config_list = config_list, |
6078d2c9 | 406 | .dev_open = dev_open, |
aa48adf9 | 407 | .dev_close = dev_close, |
6078d2c9 | 408 | .dev_acquisition_start = dev_acquisition_start, |
8d4097ff | 409 | .dev_acquisition_stop = dev_acquisition_stop, |
41812aca | 410 | .context = NULL, |
7d658874 | 411 | }; |