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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; |
f438e0c9 | 48 | int cur_chunk; |
aa48adf9 | 49 | gboolean finished; |
7d658874 BV |
50 | }; |
51 | ||
f254bc4b | 52 | static const uint32_t devopts[] = { |
68ac991d BV |
53 | SR_CONF_CAPTUREFILE | SR_CONF_SET, |
54 | SR_CONF_CAPTURE_UNITSIZE | SR_CONF_GET | SR_CONF_SET, | |
02e49ae5 | 55 | SR_CONF_NUM_LOGIC_CHANNELS | SR_CONF_SET, |
68ac991d | 56 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET, |
02e49ae5 | 57 | SR_CONF_SESSIONFILE | SR_CONF_SET, |
7d658874 BV |
58 | }; |
59 | ||
8d4097ff | 60 | static gboolean stream_session_data(struct sr_dev_inst *sdi) |
7d658874 | 61 | { |
bb7ef793 | 62 | struct session_vdev *vdev; |
7d658874 | 63 | struct sr_datafeed_packet packet; |
9c939c51 | 64 | struct sr_datafeed_logic logic; |
f438e0c9 | 65 | struct zip_stat zs; |
7d658874 | 66 | int ret, got_data; |
f438e0c9 BV |
67 | char capturefile[16]; |
68 | void *buf; | |
7d658874 | 69 | |
7d658874 | 70 | got_data = FALSE; |
102f1239 | 71 | vdev = sdi->priv; |
8d4097ff DE |
72 | if (!vdev->capfile) { |
73 | /* No capture file opened yet, or finished with the last | |
74 | * chunked one. */ | |
75 | if (vdev->cur_chunk == 0) { | |
76 | /* capturefile is always the unchunked base name. */ | |
77 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { | |
78 | /* No chunks, just a single capture file. */ | |
79 | vdev->cur_chunk = 0; | |
80 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
81 | vdev->capturefile, 0))) | |
82 | return FALSE; | |
83 | sr_dbg("Opened %s.", vdev->capturefile); | |
f438e0c9 | 84 | } else { |
8d4097ff DE |
85 | /* Try as first chunk filename. */ |
86 | snprintf(capturefile, 15, "%s-1", vdev->capturefile); | |
f438e0c9 | 87 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { |
8d4097ff | 88 | vdev->cur_chunk = 1; |
f438e0c9 BV |
89 | if (!(vdev->capfile = zip_fopen(vdev->archive, |
90 | capturefile, 0))) | |
91 | return FALSE; | |
92 | sr_dbg("Opened %s.", capturefile); | |
93 | } else { | |
8d4097ff DE |
94 | sr_err("No capture file '%s' in " "session file '%s'.", |
95 | vdev->capturefile, vdev->sessionfile); | |
96 | return FALSE; | |
f438e0c9 BV |
97 | } |
98 | } | |
7d658874 | 99 | } else { |
8d4097ff DE |
100 | /* Capture data is chunked, advance to the next chunk. */ |
101 | vdev->cur_chunk++; | |
102 | snprintf(capturefile, 15, "%s-%d", vdev->capturefile, | |
103 | vdev->cur_chunk); | |
104 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
105 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
106 | capturefile, 0))) | |
107 | return FALSE; | |
108 | sr_dbg("Opened %s.", capturefile); | |
f438e0c9 | 109 | } else { |
8d4097ff DE |
110 | /* We got all the chunks, finish up. */ |
111 | return FALSE; | |
f438e0c9 | 112 | } |
7d658874 BV |
113 | } |
114 | } | |
115 | ||
8d4097ff DE |
116 | buf = g_malloc(CHUNKSIZE); |
117 | ||
118 | ret = zip_fread(vdev->capfile, buf, | |
119 | CHUNKSIZE / vdev->unitsize * vdev->unitsize); | |
120 | if (ret > 0) { | |
121 | if (ret % vdev->unitsize != 0) | |
122 | sr_warn("Read size %d not a multiple of the" | |
123 | " unit size %d.", ret, vdev->unitsize); | |
124 | got_data = TRUE; | |
125 | packet.type = SR_DF_LOGIC; | |
126 | packet.payload = &logic; | |
127 | logic.length = ret; | |
128 | logic.unitsize = vdev->unitsize; | |
129 | logic.data = buf; | |
130 | vdev->bytes_read += ret; | |
102f1239 | 131 | sr_session_send(sdi, &packet); |
8d4097ff DE |
132 | } else { |
133 | /* done with this capture file */ | |
134 | zip_fclose(vdev->capfile); | |
135 | vdev->capfile = NULL; | |
136 | if (vdev->cur_chunk != 0) { | |
137 | /* There might be more chunks, so don't fall through | |
138 | * to the SR_DF_END here. */ | |
139 | got_data = TRUE; | |
140 | } | |
7d658874 | 141 | } |
8d4097ff | 142 | g_free(buf); |
7d658874 | 143 | |
8d4097ff DE |
144 | return got_data; |
145 | } | |
146 | ||
147 | static int receive_data(int fd, int revents, void *cb_data) | |
148 | { | |
149 | struct sr_dev_inst *sdi; | |
150 | struct session_vdev *vdev; | |
151 | struct sr_datafeed_packet packet; | |
152 | ||
153 | (void)fd; | |
154 | (void)revents; | |
155 | ||
156 | sdi = cb_data; | |
157 | vdev = sdi->priv; | |
158 | ||
159 | if (!vdev->finished && !stream_session_data(sdi)) | |
160 | vdev->finished = TRUE; | |
161 | if (!vdev->finished) | |
162 | return G_SOURCE_CONTINUE; | |
163 | ||
164 | if (vdev->capfile) { | |
165 | zip_fclose(vdev->capfile); | |
166 | vdev->capfile = NULL; | |
167 | } | |
168 | if (vdev->archive) { | |
169 | zip_discard(vdev->archive); | |
170 | vdev->archive = NULL; | |
171 | } | |
172 | packet.type = SR_DF_END; | |
173 | packet.payload = NULL; | |
174 | sr_session_send(sdi, &packet); | |
175 | ||
176 | return G_SOURCE_REMOVE; | |
7d658874 BV |
177 | } |
178 | ||
179 | /* driver callbacks */ | |
180 | ||
4f840ce9 | 181 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
7d658874 | 182 | { |
102f1239 | 183 | return std_init(sr_ctx, di, LOG_PREFIX); |
7d658874 BV |
184 | } |
185 | ||
4f840ce9 | 186 | static int dev_clear(const struct sr_dev_driver *di) |
7d658874 | 187 | { |
102f1239 | 188 | struct drv_context *drvc; |
7d658874 BV |
189 | GSList *l; |
190 | ||
41812aca | 191 | drvc = di->context; |
102f1239 | 192 | for (l = drvc->instances; l; l = l->next) |
d3683c42 | 193 | sr_dev_inst_free(l->data); |
102f1239 BV |
194 | g_slist_free(drvc->instances); |
195 | drvc->instances = NULL; | |
805e9640 | 196 | |
57ab7d9f | 197 | return SR_OK; |
7d658874 BV |
198 | } |
199 | ||
6078d2c9 | 200 | static int dev_open(struct sr_dev_inst *sdi) |
7d658874 | 201 | { |
4f840ce9 | 202 | struct sr_dev_driver *di; |
102f1239 | 203 | struct drv_context *drvc; |
aa48adf9 | 204 | struct session_vdev *vdev; |
b53738ba | 205 | |
4f840ce9 | 206 | di = sdi->driver; |
41812aca | 207 | drvc = di->context; |
102f1239 | 208 | vdev = g_malloc0(sizeof(struct session_vdev)); |
aa48adf9 | 209 | sdi->priv = vdev; |
102f1239 | 210 | drvc->instances = g_slist_append(drvc->instances, sdi); |
7d658874 BV |
211 | |
212 | return SR_OK; | |
213 | } | |
214 | ||
aa48adf9 BV |
215 | static int dev_close(struct sr_dev_inst *sdi) |
216 | { | |
8c9d4d67 JH |
217 | const struct session_vdev *const vdev = sdi->priv; |
218 | g_free(vdev->sessionfile); | |
219 | g_free(vdev->capturefile); | |
220 | ||
aa48adf9 BV |
221 | g_free(sdi->priv); |
222 | sdi->priv = NULL; | |
223 | ||
224 | return SR_OK; | |
225 | } | |
226 | ||
584560f1 | 227 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 228 | const struct sr_channel_group *cg) |
7d658874 | 229 | { |
bb7ef793 | 230 | struct session_vdev *vdev; |
7d658874 | 231 | |
53b4680f | 232 | (void)cg; |
8f996b89 | 233 | |
3f2cd87f UH |
234 | if (!sdi) |
235 | return SR_ERR; | |
236 | ||
237 | vdev = sdi->priv; | |
238 | ||
584560f1 | 239 | switch (key) { |
123e1313 | 240 | case SR_CONF_SAMPLERATE: |
3f2cd87f UH |
241 | *data = g_variant_new_uint64(vdev->samplerate); |
242 | break; | |
243 | case SR_CONF_CAPTURE_UNITSIZE: | |
244 | *data = g_variant_new_uint64(vdev->unitsize); | |
387014de BV |
245 | break; |
246 | default: | |
96ea73db | 247 | return SR_ERR_NA; |
387014de | 248 | } |
7d658874 | 249 | |
387014de | 250 | return SR_OK; |
7d658874 BV |
251 | } |
252 | ||
584560f1 | 253 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 254 | const struct sr_channel_group *cg) |
7d658874 | 255 | { |
bb7ef793 | 256 | struct session_vdev *vdev; |
7d658874 | 257 | |
53b4680f | 258 | (void)cg; |
8f996b89 | 259 | |
6f4b1868 | 260 | vdev = sdi->priv; |
7d658874 | 261 | |
584560f1 | 262 | switch (key) { |
1953564a | 263 | case SR_CONF_SAMPLERATE: |
003595ac | 264 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 265 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 266 | break; |
1953564a | 267 | case SR_CONF_SESSIONFILE: |
8c9d4d67 | 268 | g_free(vdev->sessionfile); |
003595ac | 269 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 270 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 271 | break; |
1953564a | 272 | case SR_CONF_CAPTUREFILE: |
8c9d4d67 | 273 | g_free(vdev->capturefile); |
003595ac | 274 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 275 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 276 | break; |
1953564a | 277 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 278 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 279 | break; |
3f239f08 | 280 | case SR_CONF_NUM_LOGIC_CHANNELS: |
2c38a41a | 281 | vdev->num_channels = g_variant_get_int32(data); |
7d658874 BV |
282 | break; |
283 | default: | |
96ea73db | 284 | return SR_ERR_NA; |
7d658874 BV |
285 | } |
286 | ||
287 | return SR_OK; | |
288 | } | |
289 | ||
584560f1 | 290 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 291 | const struct sr_channel_group *cg) |
9a6517d1 | 292 | { |
9a6517d1 | 293 | (void)sdi; |
53b4680f | 294 | (void)cg; |
9a6517d1 BV |
295 | |
296 | switch (key) { | |
297 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 | 298 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 299 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
9a6517d1 BV |
300 | break; |
301 | default: | |
96ea73db | 302 | return SR_ERR_NA; |
9a6517d1 BV |
303 | } |
304 | ||
305 | return SR_OK; | |
306 | } | |
307 | ||
6078d2c9 | 308 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
7d658874 | 309 | { |
bb7ef793 | 310 | struct session_vdev *vdev; |
ebc34738 | 311 | int ret; |
7d658874 | 312 | |
102f1239 | 313 | (void)cb_data; |
7d658874 | 314 | |
102f1239 | 315 | vdev = sdi->priv; |
8c9d4d67 JH |
316 | vdev->bytes_read = 0; |
317 | vdev->cur_chunk = 0; | |
318 | vdev->finished = FALSE; | |
319 | ||
a885ce3e | 320 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 321 | vdev->capturefile); |
7d658874 | 322 | |
40dda2c3 | 323 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 324 | sr_err("Failed to open session file '%s': " |
9d122af8 | 325 | "zip error %d.", vdev->sessionfile, ret); |
7d658874 BV |
326 | return SR_ERR; |
327 | } | |
328 | ||
4afdfd46 | 329 | /* Send header packet to the session bus. */ |
102f1239 | 330 | std_session_send_df_header(sdi, LOG_PREFIX); |
4afdfd46 | 331 | |
7d658874 | 332 | /* freewheeling source */ |
102f1239 | 333 | sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi); |
7d658874 | 334 | |
7d658874 BV |
335 | return SR_OK; |
336 | } | |
337 | ||
8d4097ff DE |
338 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
339 | { | |
340 | struct session_vdev *vdev; | |
341 | ||
342 | (void)cb_data; | |
343 | vdev = sdi->priv; | |
344 | ||
345 | vdev->finished = TRUE; | |
346 | ||
347 | return SR_OK; | |
348 | } | |
349 | ||
b4bd7088 | 350 | /** @private */ |
c09f0b57 | 351 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 352 | .name = "virtual-session", |
5097b0d0 UH |
353 | .longname = "Session-emulating driver", |
354 | .api_version = 1, | |
6078d2c9 | 355 | .init = init, |
824fba03 | 356 | .cleanup = dev_clear, |
96ea73db UH |
357 | .scan = NULL, |
358 | .dev_list = NULL, | |
824fba03 | 359 | .dev_clear = dev_clear, |
035a1078 BV |
360 | .config_get = config_get, |
361 | .config_set = config_set, | |
9a6517d1 | 362 | .config_list = config_list, |
6078d2c9 | 363 | .dev_open = dev_open, |
aa48adf9 | 364 | .dev_close = dev_close, |
6078d2c9 | 365 | .dev_acquisition_start = dev_acquisition_start, |
8d4097ff | 366 | .dev_acquisition_stop = dev_acquisition_stop, |
41812aca | 367 | .context = NULL, |
7d658874 | 368 | }; |