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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 | * | |
53 | * @param fd TODO. | |
54 | * @param revents TODO. | |
9289e273 | 55 | * @param cb_data TODO. |
9f45fb3a UH |
56 | * |
57 | * @return TODO. | |
58 | */ | |
9289e273 | 59 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 60 | { |
d68e2d1a | 61 | struct sr_dev_inst *sdi; |
bb7ef793 | 62 | struct session_vdev *vdev; |
7d658874 | 63 | struct sr_datafeed_packet packet; |
9c939c51 | 64 | struct sr_datafeed_logic logic; |
7d658874 BV |
65 | GSList *l; |
66 | void *buf; | |
67 | int ret, got_data; | |
68 | ||
cb93f8a9 UH |
69 | /* Avoid compiler warnings. */ |
70 | (void)fd; | |
71 | (void)revents; | |
7d658874 | 72 | |
b08024a8 | 73 | sr_dbg("session_driver: feed chunk"); |
7d658874 BV |
74 | |
75 | got_data = FALSE; | |
d68e2d1a | 76 | for (l = dev_insts; l; l = l->next) { |
7d658874 | 77 | sdi = l->data; |
bb7ef793 UH |
78 | vdev = sdi->priv; |
79 | if (!vdev) | |
7d658874 BV |
80 | /* already done with this instance */ |
81 | continue; | |
82 | ||
b53738ba | 83 | if (!(buf = g_try_malloc(CHUNKSIZE))) { |
7b48d6e1 UH |
84 | sr_err("session driver: %s: buf malloc failed", |
85 | __func__); | |
133a37bf | 86 | return FALSE; /* TODO: SR_ERR_MALLOC */ |
b53738ba UH |
87 | } |
88 | ||
bb7ef793 | 89 | ret = zip_fread(vdev->capfile, buf, CHUNKSIZE); |
7d658874 BV |
90 | if (ret > 0) { |
91 | got_data = TRUE; | |
92 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
93 | packet.payload = &logic; |
94 | logic.length = ret; | |
bb7ef793 | 95 | logic.unitsize = vdev->unitsize; |
9c939c51 | 96 | logic.data = buf; |
bb7ef793 | 97 | vdev->bytes_read += ret; |
9289e273 | 98 | sr_session_send(cb_data, &packet); |
7d658874 BV |
99 | } else { |
100 | /* done with this capture file */ | |
bb7ef793 UH |
101 | zip_fclose(vdev->capfile); |
102 | g_free(vdev->capturefile); | |
103 | g_free(vdev); | |
7d658874 BV |
104 | sdi->priv = NULL; |
105 | } | |
106 | } | |
107 | ||
108 | if (!got_data) { | |
109 | packet.type = SR_DF_END; | |
9289e273 | 110 | sr_session_send(cb_data, &packet); |
7d658874 BV |
111 | } |
112 | ||
113 | return TRUE; | |
114 | } | |
115 | ||
116 | /* driver callbacks */ | |
57ab7d9f | 117 | static int hw_cleanup(void); |
7d658874 | 118 | |
9f45fb3a UH |
119 | /** |
120 | * TODO. | |
121 | * | |
bb7ef793 | 122 | * @param devinfo TODO. |
9f45fb3a UH |
123 | * |
124 | * @return TODO. | |
125 | */ | |
40dda2c3 | 126 | static int hw_init(void) |
7d658874 | 127 | { |
7d658874 | 128 | |
61136ea6 | 129 | return SR_OK; |
7d658874 BV |
130 | } |
131 | ||
9f45fb3a UH |
132 | /** |
133 | * TODO. | |
9f45fb3a | 134 | */ |
57ab7d9f | 135 | static int hw_cleanup(void) |
7d658874 BV |
136 | { |
137 | GSList *l; | |
138 | ||
d68e2d1a | 139 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 140 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
141 | g_slist_free(dev_insts); |
142 | dev_insts = NULL; | |
805e9640 GM |
143 | |
144 | sr_session_source_remove(-1); | |
145 | ||
57ab7d9f | 146 | return SR_OK; |
7d658874 BV |
147 | } |
148 | ||
25a0f108 | 149 | static int hw_dev_open(struct sr_dev_inst *sdi) |
7d658874 | 150 | { |
b53738ba | 151 | |
bb7ef793 | 152 | if (!(sdi->priv = g_try_malloc0(sizeof(struct session_vdev)))) { |
7b48d6e1 | 153 | sr_err("session driver: %s: sdi->priv malloc failed", __func__); |
b53738ba UH |
154 | return SR_ERR_MALLOC; |
155 | } | |
156 | ||
d68e2d1a | 157 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
158 | |
159 | return SR_OK; | |
160 | } | |
161 | ||
387014de BV |
162 | static int hw_info_get(int info_id, const void **data, |
163 | const struct sr_dev_inst *sdi) | |
7d658874 | 164 | { |
bb7ef793 | 165 | struct session_vdev *vdev; |
7d658874 | 166 | |
387014de BV |
167 | switch (info_id) { |
168 | case SR_DI_HWCAPS: | |
169 | *data = hwcaps; | |
170 | break; | |
171 | case SR_DI_CUR_SAMPLERATE: | |
172 | if (sdi) { | |
173 | vdev = sdi->priv; | |
174 | *data = &vdev->samplerate; | |
175 | } else | |
176 | return SR_ERR; | |
177 | break; | |
178 | default: | |
179 | return SR_ERR_ARG; | |
180 | } | |
7d658874 | 181 | |
387014de | 182 | return SR_OK; |
7d658874 BV |
183 | } |
184 | ||
e7eb703f | 185 | static int hw_dev_status_get(int dev_index) |
7d658874 | 186 | { |
cb93f8a9 | 187 | /* Avoid compiler warnings. */ |
bb7ef793 | 188 | (void)dev_index; |
7d658874 | 189 | |
03168500 | 190 | if (sr_dev_list() != NULL) |
7d658874 BV |
191 | return SR_OK; |
192 | else | |
193 | return SR_ERR; | |
194 | } | |
195 | ||
6f4b1868 BV |
196 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
197 | const void *value) | |
7d658874 | 198 | { |
bb7ef793 | 199 | struct session_vdev *vdev; |
1b79df2f | 200 | const uint64_t *tmp_u64; |
7d658874 | 201 | |
6f4b1868 | 202 | vdev = sdi->priv; |
7d658874 | 203 | |
ffedd0bf | 204 | switch (hwcap) { |
7d658874 BV |
205 | case SR_HWCAP_SAMPLERATE: |
206 | tmp_u64 = value; | |
bb7ef793 | 207 | vdev->samplerate = *tmp_u64; |
9f45fb3a | 208 | sr_info("session driver: setting samplerate to %" PRIu64, |
bb7ef793 | 209 | vdev->samplerate); |
7d658874 | 210 | break; |
40dda2c3 BV |
211 | case SR_HWCAP_SESSIONFILE: |
212 | vdev->sessionfile = g_strdup(value); | |
213 | sr_info("session driver: setting sessionfile to %s", | |
214 | vdev->sessionfile); | |
215 | break; | |
7d658874 | 216 | case SR_HWCAP_CAPTUREFILE: |
bb7ef793 | 217 | vdev->capturefile = g_strdup(value); |
9f45fb3a | 218 | sr_info("session driver: setting capturefile to %s", |
bb7ef793 | 219 | vdev->capturefile); |
7d658874 BV |
220 | break; |
221 | case SR_HWCAP_CAPTURE_UNITSIZE: | |
222 | tmp_u64 = value; | |
bb7ef793 | 223 | vdev->unitsize = *tmp_u64; |
7d658874 BV |
224 | break; |
225 | case SR_HWCAP_CAPTURE_NUM_PROBES: | |
226 | tmp_u64 = value; | |
bb7ef793 | 227 | vdev->num_probes = *tmp_u64; |
7d658874 BV |
228 | break; |
229 | default: | |
9f45fb3a | 230 | sr_err("session driver: %s: unknown capability %d requested", |
ffedd0bf | 231 | __func__, hwcap); |
7d658874 BV |
232 | return SR_ERR; |
233 | } | |
234 | ||
235 | return SR_OK; | |
236 | } | |
237 | ||
4d684427 BV |
238 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
239 | void *cb_data) | |
7d658874 BV |
240 | { |
241 | struct zip_stat zs; | |
bb7ef793 | 242 | struct session_vdev *vdev; |
7d658874 BV |
243 | struct sr_datafeed_header *header; |
244 | struct sr_datafeed_packet *packet; | |
f366e86c | 245 | struct sr_datafeed_meta_logic meta; |
ebc34738 | 246 | int ret; |
7d658874 | 247 | |
4d684427 | 248 | vdev = sdi->priv; |
7d658874 | 249 | |
40dda2c3 | 250 | sr_info("session_driver: opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 251 | vdev->capturefile); |
7d658874 | 252 | |
40dda2c3 | 253 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
7b48d6e1 | 254 | sr_err("session driver: Failed to open session file '%s': " |
40dda2c3 | 255 | "zip error %d\n", vdev->sessionfile, ret); |
7d658874 BV |
256 | return SR_ERR; |
257 | } | |
258 | ||
bb7ef793 | 259 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) == -1) { |
7b48d6e1 | 260 | sr_err("session driver: Failed to check capture file '%s' in " |
40dda2c3 | 261 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
262 | return SR_ERR; |
263 | } | |
264 | ||
bb7ef793 | 265 | if (!(vdev->capfile = zip_fopen(vdev->archive, vdev->capturefile, 0))) { |
7b48d6e1 | 266 | sr_err("session driver: Failed to open capture file '%s' in " |
40dda2c3 | 267 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
268 | return SR_ERR; |
269 | } | |
270 | ||
271 | /* freewheeling source */ | |
9289e273 | 272 | sr_session_source_add(-1, 0, 0, receive_data, cb_data); |
7d658874 | 273 | |
b53738ba | 274 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
7b48d6e1 | 275 | sr_err("session driver: %s: packet malloc failed", __func__); |
b53738ba UH |
276 | return SR_ERR_MALLOC; |
277 | } | |
278 | ||
279 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
7b48d6e1 | 280 | sr_err("session driver: %s: header malloc failed", __func__); |
b53738ba UH |
281 | return SR_ERR_MALLOC; |
282 | } | |
283 | ||
7d658874 | 284 | /* Send header packet to the session bus. */ |
7d658874 | 285 | packet->type = SR_DF_HEADER; |
7d658874 BV |
286 | packet->payload = (unsigned char *)header; |
287 | header->feed_version = 1; | |
288 | gettimeofday(&header->starttime, NULL); | |
9289e273 | 289 | sr_session_send(cb_data, packet); |
f366e86c BV |
290 | |
291 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
292 | packet->type = SR_DF_META_LOGIC; | |
293 | packet->payload = &meta; | |
294 | meta.samplerate = vdev->samplerate; | |
295 | meta.num_probes = vdev->num_probes; | |
296 | sr_session_send(cb_data, packet); | |
297 | ||
7d658874 BV |
298 | g_free(header); |
299 | g_free(packet); | |
300 | ||
301 | return SR_OK; | |
302 | } | |
303 | ||
c09f0b57 | 304 | SR_PRIV struct sr_dev_driver session_driver = { |
5097b0d0 UH |
305 | .name = "session", |
306 | .longname = "Session-emulating driver", | |
307 | .api_version = 1, | |
308 | .init = hw_init, | |
309 | .cleanup = hw_cleanup, | |
e7eb703f UH |
310 | .dev_open = hw_dev_open, |
311 | .dev_close = NULL, | |
387014de | 312 | .info_get = hw_info_get, |
e7eb703f | 313 | .dev_status_get = hw_dev_status_get, |
a9a245b4 | 314 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
315 | .dev_acquisition_start = hw_dev_acquisition_start, |
316 | .dev_acquisition_stop = NULL, | |
7d658874 | 317 | }; |