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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> | |
b7f09cf8 UH |
26 | #include "sigrok.h" |
27 | #include "sigrok-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 { |
7d658874 BV |
33 | char *capturefile; |
34 | struct zip *archive; | |
35 | struct zip_file *capfile; | |
cb1e389c | 36 | int bytes_read; |
7d658874 BV |
37 | uint64_t samplerate; |
38 | int unitsize; | |
39 | int num_probes; | |
40 | }; | |
41 | ||
42 | static char *sessionfile = NULL; | |
d68e2d1a | 43 | static GSList *dev_insts = NULL; |
ffedd0bf | 44 | static 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. | |
80 | * @param session_data TODO. | |
81 | * | |
82 | * @return TODO. | |
83 | */ | |
9c939c51 | 84 | static int feed_chunk(int fd, int revents, void *session_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; |
9c939c51 | 123 | sr_session_bus(session_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; | |
9c939c51 | 135 | sr_session_bus(session_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 | */ | |
bb7ef793 | 151 | static int hw_init(const char *devinfo) |
7d658874 | 152 | { |
bb7ef793 | 153 | sessionfile = g_strdup(devinfo); |
7d658874 BV |
154 | |
155 | return 0; | |
156 | } | |
157 | ||
9f45fb3a UH |
158 | /** |
159 | * TODO. | |
160 | * | |
161 | */ | |
57ab7d9f | 162 | static int hw_cleanup(void) |
7d658874 BV |
163 | { |
164 | GSList *l; | |
165 | ||
d68e2d1a | 166 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 167 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
168 | g_slist_free(dev_insts); |
169 | dev_insts = NULL; | |
805e9640 GM |
170 | |
171 | sr_session_source_remove(-1); | |
172 | ||
7d658874 | 173 | g_free(sessionfile); |
57ab7d9f UH |
174 | |
175 | return SR_OK; | |
7d658874 BV |
176 | } |
177 | ||
bb7ef793 | 178 | static int hw_opendev(int dev_index) |
7d658874 | 179 | { |
d68e2d1a | 180 | struct sr_dev_inst *sdi; |
7d658874 | 181 | |
bb7ef793 | 182 | sdi = sr_dev_inst_new(dev_index, SR_ST_INITIALIZING, |
7b48d6e1 | 183 | NULL, NULL, NULL); |
7d658874 BV |
184 | if (!sdi) |
185 | return SR_ERR; | |
b53738ba | 186 | |
bb7ef793 | 187 | if (!(sdi->priv = g_try_malloc0(sizeof(struct session_vdev)))) { |
7b48d6e1 | 188 | sr_err("session driver: %s: sdi->priv malloc failed", __func__); |
b53738ba UH |
189 | return SR_ERR_MALLOC; |
190 | } | |
191 | ||
d68e2d1a | 192 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
193 | |
194 | return SR_OK; | |
195 | } | |
196 | ||
5097b0d0 | 197 | static void *hw_dev_info_get(int dev_index, int dev_info_id) |
7d658874 | 198 | { |
bb7ef793 | 199 | struct session_vdev *vdev; |
7d658874 BV |
200 | void *info; |
201 | ||
bb7ef793 | 202 | if (dev_info_id != SR_DI_CUR_SAMPLERATE) |
b8c2f85f BV |
203 | return NULL; |
204 | ||
bb7ef793 | 205 | if (!(vdev = get_vdev_by_index(dev_index))) |
7d658874 BV |
206 | return NULL; |
207 | ||
bb7ef793 | 208 | info = &vdev->samplerate; |
7d658874 BV |
209 | |
210 | return info; | |
211 | } | |
212 | ||
bb7ef793 | 213 | static int hw_get_status(int dev_index) |
7d658874 | 214 | { |
cb93f8a9 | 215 | /* Avoid compiler warnings. */ |
bb7ef793 | 216 | (void)dev_index; |
7d658874 | 217 | |
03168500 | 218 | if (sr_dev_list() != NULL) |
7d658874 BV |
219 | return SR_OK; |
220 | else | |
221 | return SR_ERR; | |
222 | } | |
223 | ||
9f45fb3a UH |
224 | /** |
225 | * Get the list of hardware capabilities. | |
226 | * | |
227 | * @return A pointer to the (hardware) capabilities of this virtual session | |
228 | * driver. This could be NULL, if no such capabilities exist. | |
229 | */ | |
ffedd0bf | 230 | static int *hw_hwcap_get_all(void) |
7d658874 | 231 | { |
ffedd0bf | 232 | return hwcaps; |
7d658874 BV |
233 | } |
234 | ||
a7d05fcb | 235 | static int hw_config_set(int dev_index, int hwcap, void *value) |
7d658874 | 236 | { |
bb7ef793 | 237 | struct session_vdev *vdev; |
7d658874 BV |
238 | uint64_t *tmp_u64; |
239 | ||
bb7ef793 | 240 | if (!(vdev = get_vdev_by_index(dev_index))) |
7d658874 BV |
241 | return SR_ERR; |
242 | ||
ffedd0bf | 243 | switch (hwcap) { |
7d658874 BV |
244 | case SR_HWCAP_SAMPLERATE: |
245 | tmp_u64 = value; | |
bb7ef793 | 246 | vdev->samplerate = *tmp_u64; |
9f45fb3a | 247 | sr_info("session driver: setting samplerate to %" PRIu64, |
bb7ef793 | 248 | vdev->samplerate); |
7d658874 BV |
249 | break; |
250 | case SR_HWCAP_CAPTUREFILE: | |
bb7ef793 | 251 | vdev->capturefile = g_strdup(value); |
9f45fb3a | 252 | sr_info("session driver: setting capturefile to %s", |
bb7ef793 | 253 | vdev->capturefile); |
7d658874 BV |
254 | break; |
255 | case SR_HWCAP_CAPTURE_UNITSIZE: | |
256 | tmp_u64 = value; | |
bb7ef793 | 257 | vdev->unitsize = *tmp_u64; |
7d658874 BV |
258 | break; |
259 | case SR_HWCAP_CAPTURE_NUM_PROBES: | |
260 | tmp_u64 = value; | |
bb7ef793 | 261 | vdev->num_probes = *tmp_u64; |
7d658874 BV |
262 | break; |
263 | default: | |
9f45fb3a | 264 | sr_err("session driver: %s: unknown capability %d requested", |
ffedd0bf | 265 | __func__, hwcap); |
7d658874 BV |
266 | return SR_ERR; |
267 | } | |
268 | ||
269 | return SR_OK; | |
270 | } | |
271 | ||
bb7ef793 | 272 | static int hw_start_acquisition(int dev_index, gpointer session_dev_id) |
7d658874 BV |
273 | { |
274 | struct zip_stat zs; | |
bb7ef793 | 275 | struct session_vdev *vdev; |
7d658874 BV |
276 | struct sr_datafeed_header *header; |
277 | struct sr_datafeed_packet *packet; | |
278 | int err; | |
279 | ||
cb93f8a9 | 280 | /* Avoid compiler warnings. */ |
bb7ef793 | 281 | (void)session_dev_id; |
7d658874 | 282 | |
bb7ef793 | 283 | if (!(vdev = get_vdev_by_index(dev_index))) |
7d658874 BV |
284 | return SR_ERR; |
285 | ||
b08024a8 | 286 | sr_info("session_driver: opening archive %s file %s", sessionfile, |
bb7ef793 | 287 | vdev->capturefile); |
7d658874 | 288 | |
bb7ef793 | 289 | if (!(vdev->archive = zip_open(sessionfile, 0, &err))) { |
7b48d6e1 UH |
290 | sr_err("session driver: Failed to open session file '%s': " |
291 | "zip error %d\n", sessionfile, err); | |
7d658874 BV |
292 | return SR_ERR; |
293 | } | |
294 | ||
bb7ef793 | 295 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) == -1) { |
7b48d6e1 | 296 | sr_err("session driver: Failed to check capture file '%s' in " |
bb7ef793 | 297 | "session file '%s'.", vdev->capturefile, sessionfile); |
7d658874 BV |
298 | return SR_ERR; |
299 | } | |
300 | ||
bb7ef793 | 301 | if (!(vdev->capfile = zip_fopen(vdev->archive, vdev->capturefile, 0))) { |
7b48d6e1 | 302 | sr_err("session driver: Failed to open capture file '%s' in " |
bb7ef793 | 303 | "session file '%s'.", vdev->capturefile, sessionfile); |
7d658874 BV |
304 | return SR_ERR; |
305 | } | |
306 | ||
307 | /* freewheeling source */ | |
bb7ef793 | 308 | sr_session_source_add(-1, 0, 0, feed_chunk, session_dev_id); |
7d658874 | 309 | |
b53738ba | 310 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
7b48d6e1 | 311 | sr_err("session driver: %s: packet malloc failed", __func__); |
b53738ba UH |
312 | return SR_ERR_MALLOC; |
313 | } | |
314 | ||
315 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
7b48d6e1 | 316 | sr_err("session driver: %s: header malloc failed", __func__); |
b53738ba UH |
317 | return SR_ERR_MALLOC; |
318 | } | |
319 | ||
7d658874 | 320 | /* Send header packet to the session bus. */ |
7d658874 | 321 | packet->type = SR_DF_HEADER; |
7d658874 BV |
322 | packet->payload = (unsigned char *)header; |
323 | header->feed_version = 1; | |
324 | gettimeofday(&header->starttime, NULL); | |
bb7ef793 UH |
325 | header->samplerate = vdev->samplerate; |
326 | header->num_logic_probes = vdev->num_probes; | |
327 | sr_session_bus(session_dev_id, packet); | |
7d658874 BV |
328 | g_free(header); |
329 | g_free(packet); | |
330 | ||
331 | return SR_OK; | |
332 | } | |
333 | ||
bb7ef793 | 334 | SR_PRIV struct sr_dev_plugin session_driver = { |
5097b0d0 UH |
335 | .name = "session", |
336 | .longname = "Session-emulating driver", | |
337 | .api_version = 1, | |
338 | .init = hw_init, | |
339 | .cleanup = hw_cleanup, | |
340 | .opendev = hw_opendev, | |
341 | .closedev = NULL, | |
342 | .dev_info_get = hw_dev_info_get, | |
343 | .get_status = hw_get_status, | |
344 | .hwcap_get_all = hw_hwcap_get_all, | |
345 | .config_set = hw_config_set, | |
346 | .start_acquisition = hw_start_acquisition, | |
347 | .stop_acquisition = NULL, | |
7d658874 | 348 | }; |