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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 BV |
36 | SR_PRIV struct sr_dev_driver session_driver_info; |
37 | static struct sr_dev_driver *di = &session_driver_info; | |
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, | |
55 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET, | |
7d658874 BV |
56 | }; |
57 | ||
9289e273 | 58 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 59 | { |
d68e2d1a | 60 | struct sr_dev_inst *sdi; |
bb7ef793 | 61 | struct session_vdev *vdev; |
7d658874 | 62 | struct sr_datafeed_packet packet; |
9c939c51 | 63 | struct sr_datafeed_logic logic; |
f438e0c9 | 64 | struct zip_stat zs; |
7d658874 | 65 | int ret, got_data; |
f438e0c9 BV |
66 | char capturefile[16]; |
67 | void *buf; | |
7d658874 | 68 | |
cb93f8a9 UH |
69 | (void)fd; |
70 | (void)revents; | |
7d658874 | 71 | |
102f1239 | 72 | sdi = cb_data; |
7d658874 | 73 | got_data = FALSE; |
102f1239 BV |
74 | vdev = sdi->priv; |
75 | if (!vdev->finished) { | |
f438e0c9 BV |
76 | if (!vdev->capfile) { |
77 | /* No capture file opened yet, or finished with the last | |
78 | * chunked one. */ | |
79 | if (vdev->cur_chunk == 0) { | |
80 | /* capturefile is always the unchunked base name. */ | |
81 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { | |
82 | /* No chunks, just a single capture file. */ | |
83 | vdev->cur_chunk = 0; | |
84 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
85 | vdev->capturefile, 0))) | |
86 | return FALSE; | |
87 | sr_dbg("Opened %s.", vdev->capturefile); | |
88 | } else { | |
89 | /* Try as first chunk filename. */ | |
90 | snprintf(capturefile, 15, "%s-1", vdev->capturefile); | |
91 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
92 | vdev->cur_chunk = 1; | |
93 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
94 | capturefile, 0))) | |
95 | return FALSE; | |
96 | sr_dbg("Opened %s.", capturefile); | |
97 | } else { | |
98 | sr_err("No capture file '%s' in " "session file '%s'.", | |
99 | vdev->capturefile, vdev->sessionfile); | |
100 | return FALSE; | |
101 | } | |
102 | } | |
103 | } else { | |
104 | /* Capture data is chunked, advance to the next chunk. */ | |
105 | vdev->cur_chunk++; | |
106 | snprintf(capturefile, 15, "%s-%d", vdev->capturefile, | |
107 | vdev->cur_chunk); | |
108 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
109 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
110 | capturefile, 0))) | |
111 | return FALSE; | |
112 | sr_dbg("Opened %s.", capturefile); | |
113 | } else { | |
114 | /* We got all the chunks, finish up. */ | |
aa48adf9 | 115 | vdev->finished = TRUE; |
102f1239 | 116 | return TRUE; |
f438e0c9 BV |
117 | } |
118 | } | |
119 | } | |
120 | ||
016f2e00 BV |
121 | if (!(buf = g_try_malloc(CHUNKSIZE))) { |
122 | sr_err("%s: buf malloc failed", __func__); | |
123 | return FALSE; | |
124 | } | |
125 | ||
8bbdd364 DE |
126 | ret = zip_fread(vdev->capfile, buf, |
127 | CHUNKSIZE / vdev->unitsize * vdev->unitsize); | |
7d658874 | 128 | if (ret > 0) { |
8bbdd364 DE |
129 | if (ret % vdev->unitsize != 0) |
130 | sr_warn("Read size %d not a multiple of the" | |
131 | " unit size %d.", ret, vdev->unitsize); | |
7d658874 BV |
132 | got_data = TRUE; |
133 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
134 | packet.payload = &logic; |
135 | logic.length = ret; | |
bb7ef793 | 136 | logic.unitsize = vdev->unitsize; |
9c939c51 | 137 | logic.data = buf; |
bb7ef793 | 138 | vdev->bytes_read += ret; |
102f1239 | 139 | sr_session_send(sdi, &packet); |
7d658874 BV |
140 | } else { |
141 | /* done with this capture file */ | |
bb7ef793 | 142 | zip_fclose(vdev->capfile); |
f438e0c9 BV |
143 | vdev->capfile = NULL; |
144 | if (vdev->cur_chunk == 0) { | |
145 | /* It was the only file. */ | |
aa48adf9 | 146 | vdev->finished = TRUE; |
f438e0c9 BV |
147 | } else { |
148 | /* There might be more chunks, so don't fall through | |
149 | * to the SR_DF_END here. */ | |
016f2e00 | 150 | g_free(buf); |
f438e0c9 BV |
151 | return TRUE; |
152 | } | |
7d658874 | 153 | } |
016f2e00 | 154 | g_free(buf); |
7d658874 BV |
155 | } |
156 | ||
157 | if (!got_data) { | |
158 | packet.type = SR_DF_END; | |
102f1239 BV |
159 | sr_session_send(sdi, &packet); |
160 | sr_session_source_remove(sdi->session, -1); | |
7d658874 BV |
161 | } |
162 | ||
163 | return TRUE; | |
164 | } | |
165 | ||
166 | /* driver callbacks */ | |
167 | ||
6078d2c9 | 168 | static int init(struct sr_context *sr_ctx) |
7d658874 | 169 | { |
102f1239 | 170 | return std_init(sr_ctx, di, LOG_PREFIX); |
7d658874 BV |
171 | } |
172 | ||
824fba03 | 173 | static int dev_clear(void) |
7d658874 | 174 | { |
102f1239 | 175 | struct drv_context *drvc; |
7d658874 BV |
176 | GSList *l; |
177 | ||
102f1239 BV |
178 | drvc = di->priv; |
179 | for (l = drvc->instances; l; l = l->next) | |
d3683c42 | 180 | sr_dev_inst_free(l->data); |
102f1239 BV |
181 | g_slist_free(drvc->instances); |
182 | drvc->instances = NULL; | |
805e9640 | 183 | |
57ab7d9f | 184 | return SR_OK; |
7d658874 BV |
185 | } |
186 | ||
6078d2c9 | 187 | static int dev_open(struct sr_dev_inst *sdi) |
7d658874 | 188 | { |
102f1239 | 189 | struct drv_context *drvc; |
aa48adf9 | 190 | struct session_vdev *vdev; |
b53738ba | 191 | |
102f1239 BV |
192 | drvc = di->priv; |
193 | vdev = g_malloc0(sizeof(struct session_vdev)); | |
aa48adf9 | 194 | sdi->priv = vdev; |
102f1239 | 195 | drvc->instances = g_slist_append(drvc->instances, sdi); |
7d658874 BV |
196 | |
197 | return SR_OK; | |
198 | } | |
199 | ||
aa48adf9 BV |
200 | static int dev_close(struct sr_dev_inst *sdi) |
201 | { | |
8c9d4d67 JH |
202 | const struct session_vdev *const vdev = sdi->priv; |
203 | g_free(vdev->sessionfile); | |
204 | g_free(vdev->capturefile); | |
205 | ||
aa48adf9 BV |
206 | g_free(sdi->priv); |
207 | sdi->priv = NULL; | |
208 | ||
209 | return SR_OK; | |
210 | } | |
211 | ||
584560f1 | 212 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 213 | const struct sr_channel_group *cg) |
7d658874 | 214 | { |
bb7ef793 | 215 | struct session_vdev *vdev; |
7d658874 | 216 | |
53b4680f | 217 | (void)cg; |
8f996b89 | 218 | |
3f2cd87f UH |
219 | if (!sdi) |
220 | return SR_ERR; | |
221 | ||
222 | vdev = sdi->priv; | |
223 | ||
584560f1 | 224 | switch (key) { |
123e1313 | 225 | case SR_CONF_SAMPLERATE: |
3f2cd87f UH |
226 | *data = g_variant_new_uint64(vdev->samplerate); |
227 | break; | |
228 | case SR_CONF_CAPTURE_UNITSIZE: | |
229 | *data = g_variant_new_uint64(vdev->unitsize); | |
387014de BV |
230 | break; |
231 | default: | |
96ea73db | 232 | return SR_ERR_NA; |
387014de | 233 | } |
7d658874 | 234 | |
387014de | 235 | return SR_OK; |
7d658874 BV |
236 | } |
237 | ||
584560f1 | 238 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 239 | const struct sr_channel_group *cg) |
7d658874 | 240 | { |
bb7ef793 | 241 | struct session_vdev *vdev; |
7d658874 | 242 | |
53b4680f | 243 | (void)cg; |
8f996b89 | 244 | |
6f4b1868 | 245 | vdev = sdi->priv; |
7d658874 | 246 | |
584560f1 | 247 | switch (key) { |
1953564a | 248 | case SR_CONF_SAMPLERATE: |
003595ac | 249 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 250 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 251 | break; |
1953564a | 252 | case SR_CONF_SESSIONFILE: |
8c9d4d67 | 253 | g_free(vdev->sessionfile); |
003595ac | 254 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 255 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 256 | break; |
1953564a | 257 | case SR_CONF_CAPTUREFILE: |
8c9d4d67 | 258 | g_free(vdev->capturefile); |
003595ac | 259 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 260 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 261 | break; |
1953564a | 262 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 263 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 264 | break; |
3f239f08 | 265 | case SR_CONF_NUM_LOGIC_CHANNELS: |
fca75cbb | 266 | vdev->num_channels = g_variant_get_uint64(data); |
7d658874 BV |
267 | break; |
268 | default: | |
96ea73db | 269 | return SR_ERR_NA; |
7d658874 BV |
270 | } |
271 | ||
272 | return SR_OK; | |
273 | } | |
274 | ||
584560f1 | 275 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 276 | const struct sr_channel_group *cg) |
9a6517d1 | 277 | { |
9a6517d1 | 278 | (void)sdi; |
53b4680f | 279 | (void)cg; |
9a6517d1 BV |
280 | |
281 | switch (key) { | |
282 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 | 283 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 284 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
9a6517d1 BV |
285 | break; |
286 | default: | |
96ea73db | 287 | return SR_ERR_NA; |
9a6517d1 BV |
288 | } |
289 | ||
290 | return SR_OK; | |
291 | } | |
292 | ||
6078d2c9 | 293 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
7d658874 | 294 | { |
bb7ef793 | 295 | struct session_vdev *vdev; |
ebc34738 | 296 | int ret; |
7d658874 | 297 | |
102f1239 | 298 | (void)cb_data; |
7d658874 | 299 | |
102f1239 | 300 | vdev = sdi->priv; |
8c9d4d67 JH |
301 | vdev->bytes_read = 0; |
302 | vdev->cur_chunk = 0; | |
303 | vdev->finished = FALSE; | |
304 | ||
a885ce3e | 305 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 306 | vdev->capturefile); |
7d658874 | 307 | |
40dda2c3 | 308 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 309 | sr_err("Failed to open session file '%s': " |
9d122af8 | 310 | "zip error %d.", vdev->sessionfile, ret); |
7d658874 BV |
311 | return SR_ERR; |
312 | } | |
313 | ||
4afdfd46 | 314 | /* Send header packet to the session bus. */ |
102f1239 | 315 | std_session_send_df_header(sdi, LOG_PREFIX); |
4afdfd46 | 316 | |
7d658874 | 317 | /* freewheeling source */ |
102f1239 | 318 | sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi); |
7d658874 | 319 | |
7d658874 BV |
320 | return SR_OK; |
321 | } | |
322 | ||
b4bd7088 | 323 | /** @private */ |
c09f0b57 | 324 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 325 | .name = "virtual-session", |
5097b0d0 UH |
326 | .longname = "Session-emulating driver", |
327 | .api_version = 1, | |
6078d2c9 | 328 | .init = init, |
824fba03 | 329 | .cleanup = dev_clear, |
96ea73db UH |
330 | .scan = NULL, |
331 | .dev_list = NULL, | |
824fba03 | 332 | .dev_clear = dev_clear, |
035a1078 BV |
333 | .config_get = config_get, |
334 | .config_set = config_set, | |
9a6517d1 | 335 | .config_list = config_list, |
6078d2c9 | 336 | .dev_open = dev_open, |
aa48adf9 | 337 | .dev_close = dev_close, |
6078d2c9 | 338 | .dev_acquisition_start = dev_acquisition_start, |
69040b7c | 339 | .dev_acquisition_stop = NULL, |
96ea73db | 340 | .priv = NULL, |
7d658874 | 341 | }; |