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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; |
7d658874 BV |
46 | }; |
47 | ||
d68e2d1a | 48 | static GSList *dev_insts = NULL; |
915f7cc8 | 49 | static const int hwcaps[] = { |
1953564a BV |
50 | SR_CONF_CAPTUREFILE, |
51 | SR_CONF_CAPTURE_UNITSIZE, | |
7d658874 BV |
52 | 0, |
53 | }; | |
54 | ||
9289e273 | 55 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 56 | { |
d68e2d1a | 57 | struct sr_dev_inst *sdi; |
bb7ef793 | 58 | struct session_vdev *vdev; |
7d658874 | 59 | struct sr_datafeed_packet packet; |
9c939c51 | 60 | struct sr_datafeed_logic logic; |
f438e0c9 | 61 | struct zip_stat zs; |
7d658874 | 62 | GSList *l; |
7d658874 | 63 | int ret, got_data; |
f438e0c9 BV |
64 | char capturefile[16]; |
65 | void *buf; | |
7d658874 | 66 | |
cb93f8a9 UH |
67 | (void)fd; |
68 | (void)revents; | |
7d658874 | 69 | |
7d658874 | 70 | got_data = FALSE; |
d68e2d1a | 71 | for (l = dev_insts; l; l = l->next) { |
7d658874 | 72 | sdi = l->data; |
f438e0c9 BV |
73 | if (!(vdev = sdi->priv)) |
74 | /* Already done with this instance. */ | |
7d658874 BV |
75 | continue; |
76 | ||
f438e0c9 BV |
77 | if (!vdev->capfile) { |
78 | /* No capture file opened yet, or finished with the last | |
79 | * chunked one. */ | |
80 | if (vdev->cur_chunk == 0) { | |
81 | /* capturefile is always the unchunked base name. */ | |
82 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { | |
83 | /* No chunks, just a single capture file. */ | |
84 | vdev->cur_chunk = 0; | |
85 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
86 | vdev->capturefile, 0))) | |
87 | return FALSE; | |
88 | sr_dbg("Opened %s.", vdev->capturefile); | |
89 | } else { | |
90 | /* Try as first chunk filename. */ | |
91 | snprintf(capturefile, 15, "%s-1", vdev->capturefile); | |
92 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
93 | vdev->cur_chunk = 1; | |
94 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
95 | capturefile, 0))) | |
96 | return FALSE; | |
97 | sr_dbg("Opened %s.", capturefile); | |
98 | } else { | |
99 | sr_err("No capture file '%s' in " "session file '%s'.", | |
100 | vdev->capturefile, vdev->sessionfile); | |
101 | return FALSE; | |
102 | } | |
103 | } | |
104 | } else { | |
105 | /* Capture data is chunked, advance to the next chunk. */ | |
106 | vdev->cur_chunk++; | |
107 | snprintf(capturefile, 15, "%s-%d", vdev->capturefile, | |
108 | vdev->cur_chunk); | |
109 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
110 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
111 | capturefile, 0))) | |
112 | return FALSE; | |
113 | sr_dbg("Opened %s.", capturefile); | |
114 | } else { | |
115 | /* We got all the chunks, finish up. */ | |
116 | g_free(vdev->capturefile); | |
117 | g_free(vdev); | |
118 | sdi->priv = NULL; | |
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 | ||
bb7ef793 | 129 | ret = zip_fread(vdev->capfile, buf, CHUNKSIZE); |
7d658874 BV |
130 | if (ret > 0) { |
131 | got_data = TRUE; | |
132 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
133 | packet.payload = &logic; |
134 | logic.length = ret; | |
bb7ef793 | 135 | logic.unitsize = vdev->unitsize; |
9c939c51 | 136 | logic.data = buf; |
bb7ef793 | 137 | vdev->bytes_read += ret; |
9289e273 | 138 | sr_session_send(cb_data, &packet); |
7d658874 BV |
139 | } else { |
140 | /* done with this capture file */ | |
bb7ef793 | 141 | zip_fclose(vdev->capfile); |
f438e0c9 BV |
142 | vdev->capfile = NULL; |
143 | if (vdev->cur_chunk == 0) { | |
144 | /* It was the only file. */ | |
145 | g_free(vdev->capturefile); | |
146 | g_free(vdev); | |
147 | sdi->priv = NULL; | |
148 | } else { | |
149 | /* There might be more chunks, so don't fall through | |
150 | * to the SR_DF_END here. */ | |
016f2e00 | 151 | g_free(buf); |
f438e0c9 BV |
152 | return TRUE; |
153 | } | |
7d658874 | 154 | } |
016f2e00 | 155 | g_free(buf); |
7d658874 BV |
156 | } |
157 | ||
158 | if (!got_data) { | |
159 | packet.type = SR_DF_END; | |
9289e273 | 160 | sr_session_send(cb_data, &packet); |
b863fb1b | 161 | sr_session_source_remove(-1); |
7d658874 BV |
162 | } |
163 | ||
164 | return TRUE; | |
165 | } | |
166 | ||
167 | /* driver callbacks */ | |
168 | ||
6078d2c9 | 169 | static int init(struct sr_context *sr_ctx) |
7d658874 | 170 | { |
34f06b90 PS |
171 | (void)sr_ctx; |
172 | ||
61136ea6 | 173 | return SR_OK; |
7d658874 BV |
174 | } |
175 | ||
6078d2c9 | 176 | static int cleanup(void) |
7d658874 BV |
177 | { |
178 | GSList *l; | |
179 | ||
d68e2d1a | 180 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 181 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
182 | g_slist_free(dev_insts); |
183 | dev_insts = NULL; | |
805e9640 | 184 | |
57ab7d9f | 185 | return SR_OK; |
7d658874 BV |
186 | } |
187 | ||
6078d2c9 | 188 | static int dev_open(struct sr_dev_inst *sdi) |
7d658874 | 189 | { |
bb7ef793 | 190 | if (!(sdi->priv = g_try_malloc0(sizeof(struct session_vdev)))) { |
96ea73db | 191 | sr_err("Device context malloc failed."); |
b53738ba UH |
192 | return SR_ERR_MALLOC; |
193 | } | |
194 | ||
d68e2d1a | 195 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
196 | |
197 | return SR_OK; | |
198 | } | |
199 | ||
8f996b89 ML |
200 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
201 | const struct sr_probe_group *probe_group) | |
7d658874 | 202 | { |
bb7ef793 | 203 | struct session_vdev *vdev; |
7d658874 | 204 | |
8f996b89 ML |
205 | (void)probe_group; |
206 | ||
035a1078 | 207 | switch (id) { |
123e1313 | 208 | case SR_CONF_SAMPLERATE: |
387014de BV |
209 | if (sdi) { |
210 | vdev = sdi->priv; | |
003595ac | 211 | *data = g_variant_new_uint64(vdev->samplerate); |
387014de BV |
212 | } else |
213 | return SR_ERR; | |
214 | break; | |
215 | default: | |
96ea73db | 216 | return SR_ERR_NA; |
387014de | 217 | } |
7d658874 | 218 | |
387014de | 219 | return SR_OK; |
7d658874 BV |
220 | } |
221 | ||
8f996b89 ML |
222 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
223 | const struct sr_probe_group *probe_group) | |
7d658874 | 224 | { |
bb7ef793 | 225 | struct session_vdev *vdev; |
7d658874 | 226 | |
8f996b89 ML |
227 | (void)probe_group; |
228 | ||
6f4b1868 | 229 | vdev = sdi->priv; |
7d658874 | 230 | |
035a1078 | 231 | switch (id) { |
1953564a | 232 | case SR_CONF_SAMPLERATE: |
003595ac | 233 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 234 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 235 | break; |
1953564a | 236 | case SR_CONF_SESSIONFILE: |
003595ac | 237 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 238 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 239 | break; |
1953564a | 240 | case SR_CONF_CAPTUREFILE: |
003595ac | 241 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 242 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 243 | break; |
1953564a | 244 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 245 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 246 | break; |
bf90d4c6 | 247 | case SR_CONF_NUM_LOGIC_PROBES: |
003595ac | 248 | vdev->num_probes = g_variant_get_uint64(data); |
7d658874 BV |
249 | break; |
250 | default: | |
96ea73db | 251 | return SR_ERR_NA; |
7d658874 BV |
252 | } |
253 | ||
254 | return SR_OK; | |
255 | } | |
256 | ||
8f996b89 ML |
257 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
258 | const struct sr_probe_group *probe_group) | |
9a6517d1 | 259 | { |
9a6517d1 | 260 | (void)sdi; |
8f996b89 | 261 | (void)probe_group; |
9a6517d1 BV |
262 | |
263 | switch (key) { | |
264 | case SR_CONF_DEVICE_OPTIONS: | |
003595ac BV |
265 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
266 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
9a6517d1 BV |
267 | break; |
268 | default: | |
96ea73db | 269 | return SR_ERR_NA; |
9a6517d1 BV |
270 | } |
271 | ||
272 | return SR_OK; | |
273 | } | |
274 | ||
6078d2c9 | 275 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
7d658874 | 276 | { |
bb7ef793 | 277 | struct session_vdev *vdev; |
ebc34738 | 278 | int ret; |
7d658874 | 279 | |
4d684427 | 280 | vdev = sdi->priv; |
7d658874 | 281 | |
a885ce3e | 282 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 283 | vdev->capturefile); |
7d658874 | 284 | |
40dda2c3 | 285 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 286 | sr_err("Failed to open session file '%s': " |
9d122af8 | 287 | "zip error %d.", vdev->sessionfile, ret); |
7d658874 BV |
288 | return SR_ERR; |
289 | } | |
290 | ||
4afdfd46 | 291 | /* Send header packet to the session bus. */ |
29a27196 | 292 | std_session_send_df_header(cb_data, LOG_PREFIX); |
4afdfd46 | 293 | |
7d658874 | 294 | /* freewheeling source */ |
9289e273 | 295 | sr_session_source_add(-1, 0, 0, receive_data, cb_data); |
7d658874 | 296 | |
7d658874 BV |
297 | return SR_OK; |
298 | } | |
299 | ||
b4bd7088 | 300 | /** @private */ |
c09f0b57 | 301 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 302 | .name = "virtual-session", |
5097b0d0 UH |
303 | .longname = "Session-emulating driver", |
304 | .api_version = 1, | |
6078d2c9 UH |
305 | .init = init, |
306 | .cleanup = cleanup, | |
96ea73db UH |
307 | .scan = NULL, |
308 | .dev_list = NULL, | |
309 | .dev_clear = NULL, | |
035a1078 BV |
310 | .config_get = config_get, |
311 | .config_set = config_set, | |
9a6517d1 | 312 | .config_list = config_list, |
6078d2c9 | 313 | .dev_open = dev_open, |
e7eb703f | 314 | .dev_close = NULL, |
6078d2c9 | 315 | .dev_acquisition_start = dev_acquisition_start, |
69040b7c | 316 | .dev_acquisition_stop = NULL, |
96ea73db | 317 | .priv = NULL, |
7d658874 | 318 | }; |