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7d658874 BV |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
c73d2ea4 | 4 | * Copyright (C) 2010-2012 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 BV |
28 | |
29 | /* size of payloads sent across the session bus */ | |
8ff6afc9 | 30 | #define CHUNKSIZE (512 * 1024) |
7d658874 | 31 | |
bb7ef793 | 32 | struct session_vdev { |
40dda2c3 | 33 | char *sessionfile; |
7d658874 BV |
34 | char *capturefile; |
35 | struct zip *archive; | |
36 | struct zip_file *capfile; | |
cb1e389c | 37 | int bytes_read; |
7d658874 BV |
38 | uint64_t samplerate; |
39 | int unitsize; | |
40 | int num_probes; | |
41 | }; | |
42 | ||
d68e2d1a | 43 | static GSList *dev_insts = NULL; |
915f7cc8 | 44 | static const int hwcaps[] = { |
7d658874 BV |
45 | SR_HWCAP_CAPTUREFILE, |
46 | SR_HWCAP_CAPTURE_UNITSIZE, | |
47 | 0, | |
48 | }; | |
49 | ||
9f45fb3a UH |
50 | /** |
51 | * TODO. | |
52 | * | |
bb7ef793 | 53 | * @param dev_index TODO. |
9f45fb3a | 54 | */ |
bb7ef793 | 55 | static struct session_vdev *get_vdev_by_index(int dev_index) |
7d658874 | 56 | { |
d68e2d1a | 57 | struct sr_dev_inst *sdi; |
bb7ef793 | 58 | struct session_vdev *vdev; |
7d658874 | 59 | |
bb7ef793 | 60 | /* TODO: Sanity checks on dev_index. */ |
9f45fb3a | 61 | |
bb7ef793 | 62 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
9f45fb3a | 63 | sr_err("session driver: %s: device instance with device " |
bb7ef793 | 64 | "index %d was not found", __func__, dev_index); |
7d658874 | 65 | return NULL; |
9f45fb3a UH |
66 | } |
67 | ||
68 | /* TODO: Is sdi->priv == NULL valid? */ | |
7d658874 | 69 | |
bb7ef793 | 70 | vdev = sdi->priv; |
7d658874 | 71 | |
bb7ef793 | 72 | return vdev; |
7d658874 BV |
73 | } |
74 | ||
9f45fb3a UH |
75 | /** |
76 | * TODO. | |
77 | * | |
78 | * @param fd TODO. | |
79 | * @param revents TODO. | |
9289e273 | 80 | * @param cb_data TODO. |
9f45fb3a UH |
81 | * |
82 | * @return TODO. | |
83 | */ | |
9289e273 | 84 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 85 | { |
d68e2d1a | 86 | struct sr_dev_inst *sdi; |
bb7ef793 | 87 | struct session_vdev *vdev; |
7d658874 | 88 | struct sr_datafeed_packet packet; |
9c939c51 | 89 | struct sr_datafeed_logic logic; |
7d658874 BV |
90 | GSList *l; |
91 | void *buf; | |
92 | int ret, got_data; | |
93 | ||
cb93f8a9 UH |
94 | /* Avoid compiler warnings. */ |
95 | (void)fd; | |
96 | (void)revents; | |
7d658874 | 97 | |
b08024a8 | 98 | sr_dbg("session_driver: feed chunk"); |
7d658874 BV |
99 | |
100 | got_data = FALSE; | |
d68e2d1a | 101 | for (l = dev_insts; l; l = l->next) { |
7d658874 | 102 | sdi = l->data; |
bb7ef793 UH |
103 | vdev = sdi->priv; |
104 | if (!vdev) | |
7d658874 BV |
105 | /* already done with this instance */ |
106 | continue; | |
107 | ||
b53738ba | 108 | if (!(buf = g_try_malloc(CHUNKSIZE))) { |
7b48d6e1 UH |
109 | sr_err("session driver: %s: buf malloc failed", |
110 | __func__); | |
133a37bf | 111 | return FALSE; /* TODO: SR_ERR_MALLOC */ |
b53738ba UH |
112 | } |
113 | ||
bb7ef793 | 114 | ret = zip_fread(vdev->capfile, buf, CHUNKSIZE); |
7d658874 BV |
115 | if (ret > 0) { |
116 | got_data = TRUE; | |
117 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
118 | packet.payload = &logic; |
119 | logic.length = ret; | |
bb7ef793 | 120 | logic.unitsize = vdev->unitsize; |
9c939c51 | 121 | logic.data = buf; |
bb7ef793 | 122 | vdev->bytes_read += ret; |
9289e273 | 123 | sr_session_send(cb_data, &packet); |
7d658874 BV |
124 | } else { |
125 | /* done with this capture file */ | |
bb7ef793 UH |
126 | zip_fclose(vdev->capfile); |
127 | g_free(vdev->capturefile); | |
128 | g_free(vdev); | |
7d658874 BV |
129 | sdi->priv = NULL; |
130 | } | |
131 | } | |
132 | ||
133 | if (!got_data) { | |
134 | packet.type = SR_DF_END; | |
9289e273 | 135 | sr_session_send(cb_data, &packet); |
7d658874 BV |
136 | } |
137 | ||
138 | return TRUE; | |
139 | } | |
140 | ||
141 | /* driver callbacks */ | |
57ab7d9f | 142 | static int hw_cleanup(void); |
7d658874 | 143 | |
9f45fb3a UH |
144 | /** |
145 | * TODO. | |
146 | * | |
bb7ef793 | 147 | * @param devinfo TODO. |
9f45fb3a UH |
148 | * |
149 | * @return TODO. | |
150 | */ | |
40dda2c3 | 151 | static int hw_init(void) |
7d658874 | 152 | { |
7d658874 | 153 | |
61136ea6 | 154 | return SR_OK; |
7d658874 BV |
155 | } |
156 | ||
9f45fb3a UH |
157 | /** |
158 | * TODO. | |
9f45fb3a | 159 | */ |
57ab7d9f | 160 | static int hw_cleanup(void) |
7d658874 BV |
161 | { |
162 | GSList *l; | |
163 | ||
d68e2d1a | 164 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 165 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
166 | g_slist_free(dev_insts); |
167 | dev_insts = NULL; | |
805e9640 GM |
168 | |
169 | sr_session_source_remove(-1); | |
170 | ||
57ab7d9f | 171 | return SR_OK; |
7d658874 BV |
172 | } |
173 | ||
e7eb703f | 174 | static int hw_dev_open(int dev_index) |
7d658874 | 175 | { |
d68e2d1a | 176 | struct sr_dev_inst *sdi; |
7d658874 | 177 | |
bb7ef793 | 178 | sdi = sr_dev_inst_new(dev_index, SR_ST_INITIALIZING, |
7b48d6e1 | 179 | NULL, NULL, NULL); |
7d658874 BV |
180 | if (!sdi) |
181 | return SR_ERR; | |
b53738ba | 182 | |
bb7ef793 | 183 | if (!(sdi->priv = g_try_malloc0(sizeof(struct session_vdev)))) { |
7b48d6e1 | 184 | sr_err("session driver: %s: sdi->priv malloc failed", __func__); |
b53738ba UH |
185 | return SR_ERR_MALLOC; |
186 | } | |
187 | ||
d68e2d1a | 188 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
189 | |
190 | return SR_OK; | |
191 | } | |
192 | ||
387014de BV |
193 | static int hw_info_get(int info_id, const void **data, |
194 | const struct sr_dev_inst *sdi) | |
7d658874 | 195 | { |
bb7ef793 | 196 | struct session_vdev *vdev; |
7d658874 | 197 | |
387014de BV |
198 | switch (info_id) { |
199 | case SR_DI_HWCAPS: | |
200 | *data = hwcaps; | |
201 | break; | |
202 | case SR_DI_CUR_SAMPLERATE: | |
203 | if (sdi) { | |
204 | vdev = sdi->priv; | |
205 | *data = &vdev->samplerate; | |
206 | } else | |
207 | return SR_ERR; | |
208 | break; | |
209 | default: | |
210 | return SR_ERR_ARG; | |
211 | } | |
7d658874 | 212 | |
387014de | 213 | return SR_OK; |
7d658874 BV |
214 | } |
215 | ||
e7eb703f | 216 | static int hw_dev_status_get(int dev_index) |
7d658874 | 217 | { |
cb93f8a9 | 218 | /* Avoid compiler warnings. */ |
bb7ef793 | 219 | (void)dev_index; |
7d658874 | 220 | |
03168500 | 221 | if (sr_dev_list() != NULL) |
7d658874 BV |
222 | return SR_OK; |
223 | else | |
224 | return SR_ERR; | |
225 | } | |
226 | ||
6f4b1868 BV |
227 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
228 | const void *value) | |
7d658874 | 229 | { |
bb7ef793 | 230 | struct session_vdev *vdev; |
1b79df2f | 231 | const uint64_t *tmp_u64; |
7d658874 | 232 | |
6f4b1868 | 233 | vdev = sdi->priv; |
7d658874 | 234 | |
ffedd0bf | 235 | switch (hwcap) { |
7d658874 BV |
236 | case SR_HWCAP_SAMPLERATE: |
237 | tmp_u64 = value; | |
bb7ef793 | 238 | vdev->samplerate = *tmp_u64; |
9f45fb3a | 239 | sr_info("session driver: setting samplerate to %" PRIu64, |
bb7ef793 | 240 | vdev->samplerate); |
7d658874 | 241 | break; |
40dda2c3 BV |
242 | case SR_HWCAP_SESSIONFILE: |
243 | vdev->sessionfile = g_strdup(value); | |
244 | sr_info("session driver: setting sessionfile to %s", | |
245 | vdev->sessionfile); | |
246 | break; | |
7d658874 | 247 | case SR_HWCAP_CAPTUREFILE: |
bb7ef793 | 248 | vdev->capturefile = g_strdup(value); |
9f45fb3a | 249 | sr_info("session driver: setting capturefile to %s", |
bb7ef793 | 250 | vdev->capturefile); |
7d658874 BV |
251 | break; |
252 | case SR_HWCAP_CAPTURE_UNITSIZE: | |
253 | tmp_u64 = value; | |
bb7ef793 | 254 | vdev->unitsize = *tmp_u64; |
7d658874 BV |
255 | break; |
256 | case SR_HWCAP_CAPTURE_NUM_PROBES: | |
257 | tmp_u64 = value; | |
bb7ef793 | 258 | vdev->num_probes = *tmp_u64; |
7d658874 BV |
259 | break; |
260 | default: | |
9f45fb3a | 261 | sr_err("session driver: %s: unknown capability %d requested", |
ffedd0bf | 262 | __func__, hwcap); |
7d658874 BV |
263 | return SR_ERR; |
264 | } | |
265 | ||
266 | return SR_OK; | |
267 | } | |
268 | ||
9289e273 | 269 | static int hw_dev_acquisition_start(int dev_index, void *cb_data) |
7d658874 BV |
270 | { |
271 | struct zip_stat zs; | |
bb7ef793 | 272 | struct session_vdev *vdev; |
7d658874 BV |
273 | struct sr_datafeed_header *header; |
274 | struct sr_datafeed_packet *packet; | |
f366e86c | 275 | struct sr_datafeed_meta_logic meta; |
ebc34738 | 276 | int ret; |
7d658874 | 277 | |
bb7ef793 | 278 | if (!(vdev = get_vdev_by_index(dev_index))) |
7d658874 BV |
279 | return SR_ERR; |
280 | ||
40dda2c3 | 281 | sr_info("session_driver: opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 282 | vdev->capturefile); |
7d658874 | 283 | |
40dda2c3 | 284 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
7b48d6e1 | 285 | sr_err("session driver: Failed to open session file '%s': " |
40dda2c3 | 286 | "zip error %d\n", vdev->sessionfile, ret); |
7d658874 BV |
287 | return SR_ERR; |
288 | } | |
289 | ||
bb7ef793 | 290 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) == -1) { |
7b48d6e1 | 291 | sr_err("session driver: Failed to check capture file '%s' in " |
40dda2c3 | 292 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
293 | return SR_ERR; |
294 | } | |
295 | ||
bb7ef793 | 296 | if (!(vdev->capfile = zip_fopen(vdev->archive, vdev->capturefile, 0))) { |
7b48d6e1 | 297 | sr_err("session driver: Failed to open capture file '%s' in " |
40dda2c3 | 298 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
299 | return SR_ERR; |
300 | } | |
301 | ||
302 | /* freewheeling source */ | |
9289e273 | 303 | sr_session_source_add(-1, 0, 0, receive_data, cb_data); |
7d658874 | 304 | |
b53738ba | 305 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
7b48d6e1 | 306 | sr_err("session driver: %s: packet malloc failed", __func__); |
b53738ba UH |
307 | return SR_ERR_MALLOC; |
308 | } | |
309 | ||
310 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
7b48d6e1 | 311 | sr_err("session driver: %s: header malloc failed", __func__); |
b53738ba UH |
312 | return SR_ERR_MALLOC; |
313 | } | |
314 | ||
7d658874 | 315 | /* Send header packet to the session bus. */ |
7d658874 | 316 | packet->type = SR_DF_HEADER; |
7d658874 BV |
317 | packet->payload = (unsigned char *)header; |
318 | header->feed_version = 1; | |
319 | gettimeofday(&header->starttime, NULL); | |
9289e273 | 320 | sr_session_send(cb_data, packet); |
f366e86c BV |
321 | |
322 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
323 | packet->type = SR_DF_META_LOGIC; | |
324 | packet->payload = &meta; | |
325 | meta.samplerate = vdev->samplerate; | |
326 | meta.num_probes = vdev->num_probes; | |
327 | sr_session_send(cb_data, packet); | |
328 | ||
7d658874 BV |
329 | g_free(header); |
330 | g_free(packet); | |
331 | ||
332 | return SR_OK; | |
333 | } | |
334 | ||
c09f0b57 | 335 | SR_PRIV struct sr_dev_driver session_driver = { |
5097b0d0 UH |
336 | .name = "session", |
337 | .longname = "Session-emulating driver", | |
338 | .api_version = 1, | |
339 | .init = hw_init, | |
340 | .cleanup = hw_cleanup, | |
e7eb703f UH |
341 | .dev_open = hw_dev_open, |
342 | .dev_close = NULL, | |
387014de | 343 | .info_get = hw_info_get, |
e7eb703f | 344 | .dev_status_get = hw_dev_status_get, |
a9a245b4 | 345 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
346 | .dev_acquisition_start = hw_dev_acquisition_start, |
347 | .dev_acquisition_stop = NULL, | |
7d658874 | 348 | }; |