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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 | ||
20 | #include <sys/types.h> | |
21 | #include <sys/stat.h> | |
22 | #include <fcntl.h> | |
23 | #include <unistd.h> | |
24 | #include <sys/time.h> | |
25 | #include <zip.h> | |
45c59c8b BV |
26 | #include "libsigrok.h" |
27 | #include "libsigrok-internal.h" | |
7d658874 | 28 | |
3544f848 | 29 | #define LOG_PREFIX "virtual-session" |
a885ce3e | 30 | |
7d658874 | 31 | /* size of payloads sent across the session bus */ |
b4bd7088 | 32 | /** @cond PRIVATE */ |
8ff6afc9 | 33 | #define CHUNKSIZE (512 * 1024) |
b4bd7088 | 34 | /** @endcond */ |
7d658874 | 35 | |
102f1239 | 36 | SR_PRIV struct sr_dev_driver session_driver_info; |
102f1239 | 37 | |
bb7ef793 | 38 | struct session_vdev { |
40dda2c3 | 39 | char *sessionfile; |
7d658874 BV |
40 | char *capturefile; |
41 | struct zip *archive; | |
42 | struct zip_file *capfile; | |
cb1e389c | 43 | int bytes_read; |
7d658874 BV |
44 | uint64_t samplerate; |
45 | int unitsize; | |
fca75cbb | 46 | int num_channels; |
f438e0c9 | 47 | int cur_chunk; |
aa48adf9 | 48 | gboolean finished; |
7d658874 BV |
49 | }; |
50 | ||
f254bc4b | 51 | static const uint32_t devopts[] = { |
68ac991d BV |
52 | SR_CONF_CAPTUREFILE | SR_CONF_SET, |
53 | SR_CONF_CAPTURE_UNITSIZE | SR_CONF_GET | SR_CONF_SET, | |
54 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET, | |
7d658874 BV |
55 | }; |
56 | ||
9289e273 | 57 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 58 | { |
d68e2d1a | 59 | struct sr_dev_inst *sdi; |
bb7ef793 | 60 | struct session_vdev *vdev; |
7d658874 | 61 | struct sr_datafeed_packet packet; |
9c939c51 | 62 | struct sr_datafeed_logic logic; |
f438e0c9 | 63 | struct zip_stat zs; |
7d658874 | 64 | int ret, got_data; |
f438e0c9 BV |
65 | char capturefile[16]; |
66 | void *buf; | |
7d658874 | 67 | |
cb93f8a9 UH |
68 | (void)fd; |
69 | (void)revents; | |
7d658874 | 70 | |
102f1239 | 71 | sdi = cb_data; |
7d658874 | 72 | got_data = FALSE; |
102f1239 BV |
73 | vdev = sdi->priv; |
74 | if (!vdev->finished) { | |
f438e0c9 BV |
75 | if (!vdev->capfile) { |
76 | /* No capture file opened yet, or finished with the last | |
77 | * chunked one. */ | |
78 | if (vdev->cur_chunk == 0) { | |
79 | /* capturefile is always the unchunked base name. */ | |
80 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { | |
81 | /* No chunks, just a single capture file. */ | |
82 | vdev->cur_chunk = 0; | |
83 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
84 | vdev->capturefile, 0))) | |
85 | return FALSE; | |
86 | sr_dbg("Opened %s.", vdev->capturefile); | |
87 | } else { | |
88 | /* Try as first chunk filename. */ | |
89 | snprintf(capturefile, 15, "%s-1", vdev->capturefile); | |
90 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
91 | vdev->cur_chunk = 1; | |
92 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
93 | capturefile, 0))) | |
94 | return FALSE; | |
95 | sr_dbg("Opened %s.", capturefile); | |
96 | } else { | |
97 | sr_err("No capture file '%s' in " "session file '%s'.", | |
98 | vdev->capturefile, vdev->sessionfile); | |
99 | return FALSE; | |
100 | } | |
101 | } | |
102 | } else { | |
103 | /* Capture data is chunked, advance to the next chunk. */ | |
104 | vdev->cur_chunk++; | |
105 | snprintf(capturefile, 15, "%s-%d", vdev->capturefile, | |
106 | vdev->cur_chunk); | |
107 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
108 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
109 | capturefile, 0))) | |
110 | return FALSE; | |
111 | sr_dbg("Opened %s.", capturefile); | |
112 | } else { | |
113 | /* We got all the chunks, finish up. */ | |
aa48adf9 | 114 | vdev->finished = TRUE; |
102f1239 | 115 | return TRUE; |
f438e0c9 BV |
116 | } |
117 | } | |
118 | } | |
119 | ||
a95f142e | 120 | buf = g_malloc(CHUNKSIZE); |
016f2e00 | 121 | |
8bbdd364 DE |
122 | ret = zip_fread(vdev->capfile, buf, |
123 | CHUNKSIZE / vdev->unitsize * vdev->unitsize); | |
7d658874 | 124 | if (ret > 0) { |
8bbdd364 DE |
125 | if (ret % vdev->unitsize != 0) |
126 | sr_warn("Read size %d not a multiple of the" | |
127 | " unit size %d.", ret, vdev->unitsize); | |
7d658874 BV |
128 | got_data = TRUE; |
129 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
130 | packet.payload = &logic; |
131 | logic.length = ret; | |
bb7ef793 | 132 | logic.unitsize = vdev->unitsize; |
9c939c51 | 133 | logic.data = buf; |
bb7ef793 | 134 | vdev->bytes_read += ret; |
102f1239 | 135 | sr_session_send(sdi, &packet); |
7d658874 BV |
136 | } else { |
137 | /* done with this capture file */ | |
bb7ef793 | 138 | zip_fclose(vdev->capfile); |
f438e0c9 BV |
139 | vdev->capfile = NULL; |
140 | if (vdev->cur_chunk == 0) { | |
141 | /* It was the only file. */ | |
aa48adf9 | 142 | vdev->finished = TRUE; |
f438e0c9 BV |
143 | } else { |
144 | /* There might be more chunks, so don't fall through | |
145 | * to the SR_DF_END here. */ | |
016f2e00 | 146 | g_free(buf); |
f438e0c9 BV |
147 | return TRUE; |
148 | } | |
7d658874 | 149 | } |
016f2e00 | 150 | g_free(buf); |
7d658874 BV |
151 | } |
152 | ||
153 | if (!got_data) { | |
154 | packet.type = SR_DF_END; | |
102f1239 BV |
155 | sr_session_send(sdi, &packet); |
156 | sr_session_source_remove(sdi->session, -1); | |
7d658874 BV |
157 | } |
158 | ||
159 | return TRUE; | |
160 | } | |
161 | ||
162 | /* driver callbacks */ | |
163 | ||
4f840ce9 | 164 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
7d658874 | 165 | { |
102f1239 | 166 | return std_init(sr_ctx, di, LOG_PREFIX); |
7d658874 BV |
167 | } |
168 | ||
4f840ce9 | 169 | static int dev_clear(const struct sr_dev_driver *di) |
7d658874 | 170 | { |
102f1239 | 171 | struct drv_context *drvc; |
7d658874 BV |
172 | GSList *l; |
173 | ||
102f1239 BV |
174 | drvc = di->priv; |
175 | for (l = drvc->instances; l; l = l->next) | |
d3683c42 | 176 | sr_dev_inst_free(l->data); |
102f1239 BV |
177 | g_slist_free(drvc->instances); |
178 | drvc->instances = NULL; | |
805e9640 | 179 | |
57ab7d9f | 180 | return SR_OK; |
7d658874 BV |
181 | } |
182 | ||
6078d2c9 | 183 | static int dev_open(struct sr_dev_inst *sdi) |
7d658874 | 184 | { |
4f840ce9 | 185 | struct sr_dev_driver *di; |
102f1239 | 186 | struct drv_context *drvc; |
aa48adf9 | 187 | struct session_vdev *vdev; |
b53738ba | 188 | |
4f840ce9 | 189 | di = sdi->driver; |
102f1239 BV |
190 | drvc = di->priv; |
191 | vdev = g_malloc0(sizeof(struct session_vdev)); | |
aa48adf9 | 192 | sdi->priv = vdev; |
102f1239 | 193 | drvc->instances = g_slist_append(drvc->instances, sdi); |
7d658874 BV |
194 | |
195 | return SR_OK; | |
196 | } | |
197 | ||
aa48adf9 BV |
198 | static int dev_close(struct sr_dev_inst *sdi) |
199 | { | |
8c9d4d67 JH |
200 | const struct session_vdev *const vdev = sdi->priv; |
201 | g_free(vdev->sessionfile); | |
202 | g_free(vdev->capturefile); | |
203 | ||
aa48adf9 BV |
204 | g_free(sdi->priv); |
205 | sdi->priv = NULL; | |
206 | ||
207 | return SR_OK; | |
208 | } | |
209 | ||
584560f1 | 210 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 211 | const struct sr_channel_group *cg) |
7d658874 | 212 | { |
bb7ef793 | 213 | struct session_vdev *vdev; |
7d658874 | 214 | |
53b4680f | 215 | (void)cg; |
8f996b89 | 216 | |
3f2cd87f UH |
217 | if (!sdi) |
218 | return SR_ERR; | |
219 | ||
220 | vdev = sdi->priv; | |
221 | ||
584560f1 | 222 | switch (key) { |
123e1313 | 223 | case SR_CONF_SAMPLERATE: |
3f2cd87f UH |
224 | *data = g_variant_new_uint64(vdev->samplerate); |
225 | break; | |
226 | case SR_CONF_CAPTURE_UNITSIZE: | |
227 | *data = g_variant_new_uint64(vdev->unitsize); | |
387014de BV |
228 | break; |
229 | default: | |
96ea73db | 230 | return SR_ERR_NA; |
387014de | 231 | } |
7d658874 | 232 | |
387014de | 233 | return SR_OK; |
7d658874 BV |
234 | } |
235 | ||
584560f1 | 236 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 237 | const struct sr_channel_group *cg) |
7d658874 | 238 | { |
bb7ef793 | 239 | struct session_vdev *vdev; |
7d658874 | 240 | |
53b4680f | 241 | (void)cg; |
8f996b89 | 242 | |
6f4b1868 | 243 | vdev = sdi->priv; |
7d658874 | 244 | |
584560f1 | 245 | switch (key) { |
1953564a | 246 | case SR_CONF_SAMPLERATE: |
003595ac | 247 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 248 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 249 | break; |
1953564a | 250 | case SR_CONF_SESSIONFILE: |
8c9d4d67 | 251 | g_free(vdev->sessionfile); |
003595ac | 252 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 253 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 254 | break; |
1953564a | 255 | case SR_CONF_CAPTUREFILE: |
8c9d4d67 | 256 | g_free(vdev->capturefile); |
003595ac | 257 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 258 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 259 | break; |
1953564a | 260 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 261 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 262 | break; |
3f239f08 | 263 | case SR_CONF_NUM_LOGIC_CHANNELS: |
fca75cbb | 264 | vdev->num_channels = g_variant_get_uint64(data); |
7d658874 BV |
265 | break; |
266 | default: | |
96ea73db | 267 | return SR_ERR_NA; |
7d658874 BV |
268 | } |
269 | ||
270 | return SR_OK; | |
271 | } | |
272 | ||
584560f1 | 273 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 274 | const struct sr_channel_group *cg) |
9a6517d1 | 275 | { |
9a6517d1 | 276 | (void)sdi; |
53b4680f | 277 | (void)cg; |
9a6517d1 BV |
278 | |
279 | switch (key) { | |
280 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 | 281 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 282 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
9a6517d1 BV |
283 | break; |
284 | default: | |
96ea73db | 285 | return SR_ERR_NA; |
9a6517d1 BV |
286 | } |
287 | ||
288 | return SR_OK; | |
289 | } | |
290 | ||
6078d2c9 | 291 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
7d658874 | 292 | { |
bb7ef793 | 293 | struct session_vdev *vdev; |
ebc34738 | 294 | int ret; |
7d658874 | 295 | |
102f1239 | 296 | (void)cb_data; |
7d658874 | 297 | |
102f1239 | 298 | vdev = sdi->priv; |
8c9d4d67 JH |
299 | vdev->bytes_read = 0; |
300 | vdev->cur_chunk = 0; | |
301 | vdev->finished = FALSE; | |
302 | ||
a885ce3e | 303 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 304 | vdev->capturefile); |
7d658874 | 305 | |
40dda2c3 | 306 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 307 | sr_err("Failed to open session file '%s': " |
9d122af8 | 308 | "zip error %d.", vdev->sessionfile, ret); |
7d658874 BV |
309 | return SR_ERR; |
310 | } | |
311 | ||
4afdfd46 | 312 | /* Send header packet to the session bus. */ |
102f1239 | 313 | std_session_send_df_header(sdi, LOG_PREFIX); |
4afdfd46 | 314 | |
7d658874 | 315 | /* freewheeling source */ |
102f1239 | 316 | sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi); |
7d658874 | 317 | |
7d658874 BV |
318 | return SR_OK; |
319 | } | |
320 | ||
b4bd7088 | 321 | /** @private */ |
c09f0b57 | 322 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 323 | .name = "virtual-session", |
5097b0d0 UH |
324 | .longname = "Session-emulating driver", |
325 | .api_version = 1, | |
6078d2c9 | 326 | .init = init, |
824fba03 | 327 | .cleanup = dev_clear, |
96ea73db UH |
328 | .scan = NULL, |
329 | .dev_list = NULL, | |
824fba03 | 330 | .dev_clear = dev_clear, |
035a1078 BV |
331 | .config_get = config_get, |
332 | .config_set = config_set, | |
9a6517d1 | 333 | .config_list = config_list, |
6078d2c9 | 334 | .dev_open = dev_open, |
aa48adf9 | 335 | .dev_close = dev_close, |
6078d2c9 | 336 | .dev_acquisition_start = dev_acquisition_start, |
69040b7c | 337 | .dev_acquisition_stop = NULL, |
96ea73db | 338 | .priv = NULL, |
7d658874 | 339 | }; |