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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 | |
bb7ef793 | 36 | struct session_vdev { |
40dda2c3 | 37 | char *sessionfile; |
7d658874 BV |
38 | char *capturefile; |
39 | struct zip *archive; | |
40 | struct zip_file *capfile; | |
cb1e389c | 41 | int bytes_read; |
7d658874 BV |
42 | uint64_t samplerate; |
43 | int unitsize; | |
44 | int num_probes; | |
f438e0c9 | 45 | int cur_chunk; |
aa48adf9 | 46 | gboolean finished; |
7d658874 BV |
47 | }; |
48 | ||
d68e2d1a | 49 | static GSList *dev_insts = NULL; |
915f7cc8 | 50 | static const int hwcaps[] = { |
1953564a BV |
51 | SR_CONF_CAPTUREFILE, |
52 | SR_CONF_CAPTURE_UNITSIZE, | |
aa48adf9 | 53 | SR_CONF_SAMPLERATE, |
7d658874 BV |
54 | }; |
55 | ||
9289e273 | 56 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 57 | { |
d68e2d1a | 58 | struct sr_dev_inst *sdi; |
bb7ef793 | 59 | struct session_vdev *vdev; |
7d658874 | 60 | struct sr_datafeed_packet packet; |
9c939c51 | 61 | struct sr_datafeed_logic logic; |
f438e0c9 | 62 | struct zip_stat zs; |
7d658874 | 63 | GSList *l; |
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 | |
7d658874 | 71 | got_data = FALSE; |
d68e2d1a | 72 | for (l = dev_insts; l; l = l->next) { |
7d658874 | 73 | sdi = l->data; |
aa48adf9 BV |
74 | vdev = sdi->priv; |
75 | if (vdev->finished) | |
f438e0c9 | 76 | /* Already done with this instance. */ |
7d658874 BV |
77 | continue; |
78 | ||
f438e0c9 BV |
79 | if (!vdev->capfile) { |
80 | /* No capture file opened yet, or finished with the last | |
81 | * chunked one. */ | |
82 | if (vdev->cur_chunk == 0) { | |
83 | /* capturefile is always the unchunked base name. */ | |
84 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { | |
85 | /* No chunks, just a single capture file. */ | |
86 | vdev->cur_chunk = 0; | |
87 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
88 | vdev->capturefile, 0))) | |
89 | return FALSE; | |
90 | sr_dbg("Opened %s.", vdev->capturefile); | |
91 | } else { | |
92 | /* Try as first chunk filename. */ | |
93 | snprintf(capturefile, 15, "%s-1", vdev->capturefile); | |
94 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
95 | vdev->cur_chunk = 1; | |
96 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
97 | capturefile, 0))) | |
98 | return FALSE; | |
99 | sr_dbg("Opened %s.", capturefile); | |
100 | } else { | |
101 | sr_err("No capture file '%s' in " "session file '%s'.", | |
102 | vdev->capturefile, vdev->sessionfile); | |
103 | return FALSE; | |
104 | } | |
105 | } | |
106 | } else { | |
107 | /* Capture data is chunked, advance to the next chunk. */ | |
108 | vdev->cur_chunk++; | |
109 | snprintf(capturefile, 15, "%s-%d", vdev->capturefile, | |
110 | vdev->cur_chunk); | |
111 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
112 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
113 | capturefile, 0))) | |
114 | return FALSE; | |
115 | sr_dbg("Opened %s.", capturefile); | |
116 | } else { | |
117 | /* We got all the chunks, finish up. */ | |
aa48adf9 | 118 | vdev->finished = TRUE; |
f438e0c9 BV |
119 | continue; |
120 | } | |
121 | } | |
122 | } | |
123 | ||
016f2e00 BV |
124 | if (!(buf = g_try_malloc(CHUNKSIZE))) { |
125 | sr_err("%s: buf malloc failed", __func__); | |
126 | return FALSE; | |
127 | } | |
128 | ||
8bbdd364 DE |
129 | ret = zip_fread(vdev->capfile, buf, |
130 | CHUNKSIZE / vdev->unitsize * vdev->unitsize); | |
7d658874 | 131 | if (ret > 0) { |
8bbdd364 DE |
132 | if (ret % vdev->unitsize != 0) |
133 | sr_warn("Read size %d not a multiple of the" | |
134 | " unit size %d.", ret, vdev->unitsize); | |
7d658874 BV |
135 | got_data = TRUE; |
136 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
137 | packet.payload = &logic; |
138 | logic.length = ret; | |
bb7ef793 | 139 | logic.unitsize = vdev->unitsize; |
9c939c51 | 140 | logic.data = buf; |
bb7ef793 | 141 | vdev->bytes_read += ret; |
9289e273 | 142 | sr_session_send(cb_data, &packet); |
7d658874 BV |
143 | } else { |
144 | /* done with this capture file */ | |
bb7ef793 | 145 | zip_fclose(vdev->capfile); |
f438e0c9 BV |
146 | vdev->capfile = NULL; |
147 | if (vdev->cur_chunk == 0) { | |
148 | /* It was the only file. */ | |
aa48adf9 | 149 | vdev->finished = TRUE; |
f438e0c9 BV |
150 | } else { |
151 | /* There might be more chunks, so don't fall through | |
152 | * to the SR_DF_END here. */ | |
016f2e00 | 153 | g_free(buf); |
f438e0c9 BV |
154 | return TRUE; |
155 | } | |
7d658874 | 156 | } |
016f2e00 | 157 | g_free(buf); |
7d658874 BV |
158 | } |
159 | ||
160 | if (!got_data) { | |
161 | packet.type = SR_DF_END; | |
9289e273 | 162 | sr_session_send(cb_data, &packet); |
b863fb1b | 163 | sr_session_source_remove(-1); |
7d658874 BV |
164 | } |
165 | ||
166 | return TRUE; | |
167 | } | |
168 | ||
169 | /* driver callbacks */ | |
170 | ||
6078d2c9 | 171 | static int init(struct sr_context *sr_ctx) |
7d658874 | 172 | { |
34f06b90 PS |
173 | (void)sr_ctx; |
174 | ||
61136ea6 | 175 | return SR_OK; |
7d658874 BV |
176 | } |
177 | ||
824fba03 | 178 | static int dev_clear(void) |
7d658874 BV |
179 | { |
180 | GSList *l; | |
181 | ||
d68e2d1a | 182 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 183 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
184 | g_slist_free(dev_insts); |
185 | dev_insts = NULL; | |
805e9640 | 186 | |
57ab7d9f | 187 | return SR_OK; |
7d658874 BV |
188 | } |
189 | ||
6078d2c9 | 190 | static int dev_open(struct sr_dev_inst *sdi) |
7d658874 | 191 | { |
aa48adf9 | 192 | struct session_vdev *vdev; |
b53738ba | 193 | |
aa48adf9 BV |
194 | vdev = g_try_malloc0(sizeof(struct session_vdev)); |
195 | sdi->priv = vdev; | |
d68e2d1a | 196 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
197 | |
198 | return SR_OK; | |
199 | } | |
200 | ||
aa48adf9 BV |
201 | static int dev_close(struct sr_dev_inst *sdi) |
202 | { | |
8c9d4d67 JH |
203 | const struct session_vdev *const vdev = sdi->priv; |
204 | g_free(vdev->sessionfile); | |
205 | g_free(vdev->capturefile); | |
206 | ||
aa48adf9 BV |
207 | g_free(sdi->priv); |
208 | sdi->priv = NULL; | |
209 | ||
210 | return SR_OK; | |
211 | } | |
212 | ||
8f996b89 ML |
213 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
214 | const struct sr_probe_group *probe_group) | |
7d658874 | 215 | { |
bb7ef793 | 216 | struct session_vdev *vdev; |
7d658874 | 217 | |
8f996b89 ML |
218 | (void)probe_group; |
219 | ||
035a1078 | 220 | switch (id) { |
123e1313 | 221 | case SR_CONF_SAMPLERATE: |
387014de BV |
222 | if (sdi) { |
223 | vdev = sdi->priv; | |
003595ac | 224 | *data = g_variant_new_uint64(vdev->samplerate); |
387014de BV |
225 | } else |
226 | return SR_ERR; | |
227 | break; | |
228 | default: | |
96ea73db | 229 | return SR_ERR_NA; |
387014de | 230 | } |
7d658874 | 231 | |
387014de | 232 | return SR_OK; |
7d658874 BV |
233 | } |
234 | ||
8f996b89 ML |
235 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
236 | const struct sr_probe_group *probe_group) | |
7d658874 | 237 | { |
bb7ef793 | 238 | struct session_vdev *vdev; |
7d658874 | 239 | |
8f996b89 ML |
240 | (void)probe_group; |
241 | ||
6f4b1868 | 242 | vdev = sdi->priv; |
7d658874 | 243 | |
035a1078 | 244 | switch (id) { |
1953564a | 245 | case SR_CONF_SAMPLERATE: |
003595ac | 246 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 247 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 248 | break; |
1953564a | 249 | case SR_CONF_SESSIONFILE: |
8c9d4d67 | 250 | g_free(vdev->sessionfile); |
003595ac | 251 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 252 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 253 | break; |
1953564a | 254 | case SR_CONF_CAPTUREFILE: |
8c9d4d67 | 255 | g_free(vdev->capturefile); |
003595ac | 256 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 257 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 258 | break; |
1953564a | 259 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 260 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 261 | break; |
bf90d4c6 | 262 | case SR_CONF_NUM_LOGIC_PROBES: |
003595ac | 263 | vdev->num_probes = g_variant_get_uint64(data); |
7d658874 BV |
264 | break; |
265 | default: | |
96ea73db | 266 | return SR_ERR_NA; |
7d658874 BV |
267 | } |
268 | ||
269 | return SR_OK; | |
270 | } | |
271 | ||
8f996b89 ML |
272 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
273 | const struct sr_probe_group *probe_group) | |
9a6517d1 | 274 | { |
9a6517d1 | 275 | (void)sdi; |
8f996b89 | 276 | (void)probe_group; |
9a6517d1 BV |
277 | |
278 | switch (key) { | |
279 | case SR_CONF_DEVICE_OPTIONS: | |
003595ac BV |
280 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
281 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
9a6517d1 BV |
282 | break; |
283 | default: | |
96ea73db | 284 | return SR_ERR_NA; |
9a6517d1 BV |
285 | } |
286 | ||
287 | return SR_OK; | |
288 | } | |
289 | ||
6078d2c9 | 290 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
7d658874 | 291 | { |
bb7ef793 | 292 | struct session_vdev *vdev; |
ebc34738 | 293 | int ret; |
7d658874 | 294 | |
4d684427 | 295 | vdev = sdi->priv; |
7d658874 | 296 | |
8c9d4d67 JH |
297 | vdev->bytes_read = 0; |
298 | vdev->cur_chunk = 0; | |
299 | vdev->finished = FALSE; | |
300 | ||
a885ce3e | 301 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 302 | vdev->capturefile); |
7d658874 | 303 | |
40dda2c3 | 304 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 305 | sr_err("Failed to open session file '%s': " |
9d122af8 | 306 | "zip error %d.", vdev->sessionfile, ret); |
7d658874 BV |
307 | return SR_ERR; |
308 | } | |
309 | ||
4afdfd46 | 310 | /* Send header packet to the session bus. */ |
29a27196 | 311 | std_session_send_df_header(cb_data, LOG_PREFIX); |
4afdfd46 | 312 | |
7d658874 | 313 | /* freewheeling source */ |
9289e273 | 314 | sr_session_source_add(-1, 0, 0, receive_data, cb_data); |
7d658874 | 315 | |
7d658874 BV |
316 | return SR_OK; |
317 | } | |
318 | ||
b4bd7088 | 319 | /** @private */ |
c09f0b57 | 320 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 321 | .name = "virtual-session", |
5097b0d0 UH |
322 | .longname = "Session-emulating driver", |
323 | .api_version = 1, | |
6078d2c9 | 324 | .init = init, |
824fba03 | 325 | .cleanup = dev_clear, |
96ea73db UH |
326 | .scan = NULL, |
327 | .dev_list = NULL, | |
824fba03 | 328 | .dev_clear = dev_clear, |
035a1078 BV |
329 | .config_get = config_get, |
330 | .config_set = config_set, | |
9a6517d1 | 331 | .config_list = config_list, |
6078d2c9 | 332 | .dev_open = dev_open, |
aa48adf9 | 333 | .dev_close = dev_close, |
6078d2c9 | 334 | .dev_acquisition_start = dev_acquisition_start, |
69040b7c | 335 | .dev_acquisition_stop = NULL, |
96ea73db | 336 | .priv = NULL, |
7d658874 | 337 | }; |