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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; | |
fca75cbb | 44 | int num_channels; |
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 | ||
0812c40e ML |
56 | extern struct sr_session *sr_current_session; |
57 | ||
9289e273 | 58 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 59 | { |
d68e2d1a | 60 | struct sr_dev_inst *sdi; |
bb7ef793 | 61 | struct session_vdev *vdev; |
7d658874 | 62 | struct sr_datafeed_packet packet; |
9c939c51 | 63 | struct sr_datafeed_logic logic; |
f438e0c9 | 64 | struct zip_stat zs; |
7d658874 | 65 | GSList *l; |
7d658874 | 66 | int ret, got_data; |
f438e0c9 BV |
67 | char capturefile[16]; |
68 | void *buf; | |
7d658874 | 69 | |
cb93f8a9 UH |
70 | (void)fd; |
71 | (void)revents; | |
7d658874 | 72 | |
7d658874 | 73 | got_data = FALSE; |
d68e2d1a | 74 | for (l = dev_insts; l; l = l->next) { |
7d658874 | 75 | sdi = l->data; |
aa48adf9 BV |
76 | vdev = sdi->priv; |
77 | if (vdev->finished) | |
f438e0c9 | 78 | /* Already done with this instance. */ |
7d658874 BV |
79 | continue; |
80 | ||
f438e0c9 BV |
81 | if (!vdev->capfile) { |
82 | /* No capture file opened yet, or finished with the last | |
83 | * chunked one. */ | |
84 | if (vdev->cur_chunk == 0) { | |
85 | /* capturefile is always the unchunked base name. */ | |
86 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) { | |
87 | /* No chunks, just a single capture file. */ | |
88 | vdev->cur_chunk = 0; | |
89 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
90 | vdev->capturefile, 0))) | |
91 | return FALSE; | |
92 | sr_dbg("Opened %s.", vdev->capturefile); | |
93 | } else { | |
94 | /* Try as first chunk filename. */ | |
95 | snprintf(capturefile, 15, "%s-1", vdev->capturefile); | |
96 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
97 | vdev->cur_chunk = 1; | |
98 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
99 | capturefile, 0))) | |
100 | return FALSE; | |
101 | sr_dbg("Opened %s.", capturefile); | |
102 | } else { | |
103 | sr_err("No capture file '%s' in " "session file '%s'.", | |
104 | vdev->capturefile, vdev->sessionfile); | |
105 | return FALSE; | |
106 | } | |
107 | } | |
108 | } else { | |
109 | /* Capture data is chunked, advance to the next chunk. */ | |
110 | vdev->cur_chunk++; | |
111 | snprintf(capturefile, 15, "%s-%d", vdev->capturefile, | |
112 | vdev->cur_chunk); | |
113 | if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) { | |
114 | if (!(vdev->capfile = zip_fopen(vdev->archive, | |
115 | capturefile, 0))) | |
116 | return FALSE; | |
117 | sr_dbg("Opened %s.", capturefile); | |
118 | } else { | |
119 | /* We got all the chunks, finish up. */ | |
aa48adf9 | 120 | vdev->finished = TRUE; |
f438e0c9 BV |
121 | continue; |
122 | } | |
123 | } | |
124 | } | |
125 | ||
016f2e00 BV |
126 | if (!(buf = g_try_malloc(CHUNKSIZE))) { |
127 | sr_err("%s: buf malloc failed", __func__); | |
128 | return FALSE; | |
129 | } | |
130 | ||
8bbdd364 DE |
131 | ret = zip_fread(vdev->capfile, buf, |
132 | CHUNKSIZE / vdev->unitsize * vdev->unitsize); | |
7d658874 | 133 | if (ret > 0) { |
8bbdd364 DE |
134 | if (ret % vdev->unitsize != 0) |
135 | sr_warn("Read size %d not a multiple of the" | |
136 | " unit size %d.", ret, vdev->unitsize); | |
7d658874 BV |
137 | got_data = TRUE; |
138 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
139 | packet.payload = &logic; |
140 | logic.length = ret; | |
bb7ef793 | 141 | logic.unitsize = vdev->unitsize; |
9c939c51 | 142 | logic.data = buf; |
bb7ef793 | 143 | vdev->bytes_read += ret; |
9289e273 | 144 | sr_session_send(cb_data, &packet); |
7d658874 BV |
145 | } else { |
146 | /* done with this capture file */ | |
bb7ef793 | 147 | zip_fclose(vdev->capfile); |
f438e0c9 BV |
148 | vdev->capfile = NULL; |
149 | if (vdev->cur_chunk == 0) { | |
150 | /* It was the only file. */ | |
aa48adf9 | 151 | vdev->finished = TRUE; |
f438e0c9 BV |
152 | } else { |
153 | /* There might be more chunks, so don't fall through | |
154 | * to the SR_DF_END here. */ | |
016f2e00 | 155 | g_free(buf); |
f438e0c9 BV |
156 | return TRUE; |
157 | } | |
7d658874 | 158 | } |
016f2e00 | 159 | g_free(buf); |
7d658874 BV |
160 | } |
161 | ||
162 | if (!got_data) { | |
163 | packet.type = SR_DF_END; | |
9289e273 | 164 | sr_session_send(cb_data, &packet); |
0812c40e | 165 | sr_session_source_remove(sr_current_session, -1); |
7d658874 BV |
166 | } |
167 | ||
168 | return TRUE; | |
169 | } | |
170 | ||
171 | /* driver callbacks */ | |
172 | ||
6078d2c9 | 173 | static int init(struct sr_context *sr_ctx) |
7d658874 | 174 | { |
34f06b90 PS |
175 | (void)sr_ctx; |
176 | ||
61136ea6 | 177 | return SR_OK; |
7d658874 BV |
178 | } |
179 | ||
824fba03 | 180 | static int dev_clear(void) |
7d658874 BV |
181 | { |
182 | GSList *l; | |
183 | ||
d68e2d1a | 184 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 185 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
186 | g_slist_free(dev_insts); |
187 | dev_insts = NULL; | |
805e9640 | 188 | |
57ab7d9f | 189 | return SR_OK; |
7d658874 BV |
190 | } |
191 | ||
6078d2c9 | 192 | static int dev_open(struct sr_dev_inst *sdi) |
7d658874 | 193 | { |
aa48adf9 | 194 | struct session_vdev *vdev; |
b53738ba | 195 | |
aa48adf9 BV |
196 | vdev = g_try_malloc0(sizeof(struct session_vdev)); |
197 | sdi->priv = vdev; | |
d68e2d1a | 198 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
199 | |
200 | return SR_OK; | |
201 | } | |
202 | ||
aa48adf9 BV |
203 | static int dev_close(struct sr_dev_inst *sdi) |
204 | { | |
8c9d4d67 JH |
205 | const struct session_vdev *const vdev = sdi->priv; |
206 | g_free(vdev->sessionfile); | |
207 | g_free(vdev->capturefile); | |
208 | ||
aa48adf9 BV |
209 | g_free(sdi->priv); |
210 | sdi->priv = NULL; | |
211 | ||
212 | return SR_OK; | |
213 | } | |
214 | ||
8f996b89 | 215 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 216 | const struct sr_channel_group *cg) |
7d658874 | 217 | { |
bb7ef793 | 218 | struct session_vdev *vdev; |
7d658874 | 219 | |
53b4680f | 220 | (void)cg; |
8f996b89 | 221 | |
035a1078 | 222 | switch (id) { |
123e1313 | 223 | case SR_CONF_SAMPLERATE: |
387014de BV |
224 | if (sdi) { |
225 | vdev = sdi->priv; | |
003595ac | 226 | *data = g_variant_new_uint64(vdev->samplerate); |
387014de BV |
227 | } else |
228 | return SR_ERR; | |
229 | break; | |
230 | default: | |
96ea73db | 231 | return SR_ERR_NA; |
387014de | 232 | } |
7d658874 | 233 | |
387014de | 234 | return SR_OK; |
7d658874 BV |
235 | } |
236 | ||
8f996b89 | 237 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 238 | const struct sr_channel_group *cg) |
7d658874 | 239 | { |
bb7ef793 | 240 | struct session_vdev *vdev; |
7d658874 | 241 | |
53b4680f | 242 | (void)cg; |
8f996b89 | 243 | |
6f4b1868 | 244 | vdev = sdi->priv; |
7d658874 | 245 | |
035a1078 | 246 | switch (id) { |
1953564a | 247 | case SR_CONF_SAMPLERATE: |
003595ac | 248 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 249 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 250 | break; |
1953564a | 251 | case SR_CONF_SESSIONFILE: |
8c9d4d67 | 252 | g_free(vdev->sessionfile); |
003595ac | 253 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 254 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 255 | break; |
1953564a | 256 | case SR_CONF_CAPTUREFILE: |
8c9d4d67 | 257 | g_free(vdev->capturefile); |
003595ac | 258 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 259 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 260 | break; |
1953564a | 261 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 262 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 263 | break; |
3f239f08 | 264 | case SR_CONF_NUM_LOGIC_CHANNELS: |
fca75cbb | 265 | vdev->num_channels = g_variant_get_uint64(data); |
7d658874 BV |
266 | break; |
267 | default: | |
96ea73db | 268 | return SR_ERR_NA; |
7d658874 BV |
269 | } |
270 | ||
271 | return SR_OK; | |
272 | } | |
273 | ||
8f996b89 | 274 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 275 | const struct sr_channel_group *cg) |
9a6517d1 | 276 | { |
9a6517d1 | 277 | (void)sdi; |
53b4680f | 278 | (void)cg; |
9a6517d1 BV |
279 | |
280 | switch (key) { | |
281 | case SR_CONF_DEVICE_OPTIONS: | |
003595ac BV |
282 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
283 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
9a6517d1 BV |
284 | break; |
285 | default: | |
96ea73db | 286 | return SR_ERR_NA; |
9a6517d1 BV |
287 | } |
288 | ||
289 | return SR_OK; | |
290 | } | |
291 | ||
6078d2c9 | 292 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
7d658874 | 293 | { |
bb7ef793 | 294 | struct session_vdev *vdev; |
ebc34738 | 295 | int ret; |
7d658874 | 296 | |
4d684427 | 297 | vdev = sdi->priv; |
7d658874 | 298 | |
8c9d4d67 JH |
299 | vdev->bytes_read = 0; |
300 | vdev->cur_chunk = 0; | |
301 | vdev->finished = FALSE; | |
302 | ||
a885ce3e | 303 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 304 | vdev->capturefile); |
7d658874 | 305 | |
40dda2c3 | 306 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 307 | sr_err("Failed to open session file '%s': " |
9d122af8 | 308 | "zip error %d.", vdev->sessionfile, ret); |
7d658874 BV |
309 | return SR_ERR; |
310 | } | |
311 | ||
4afdfd46 | 312 | /* Send header packet to the session bus. */ |
29a27196 | 313 | std_session_send_df_header(cb_data, LOG_PREFIX); |
4afdfd46 | 314 | |
7d658874 | 315 | /* freewheeling source */ |
0812c40e | 316 | sr_session_source_add(sr_current_session, -1, 0, 0, receive_data, cb_data); |
7d658874 | 317 | |
7d658874 BV |
318 | return SR_OK; |
319 | } | |
320 | ||
b4bd7088 | 321 | /** @private */ |
c09f0b57 | 322 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 323 | .name = "virtual-session", |
5097b0d0 UH |
324 | .longname = "Session-emulating driver", |
325 | .api_version = 1, | |
6078d2c9 | 326 | .init = init, |
824fba03 | 327 | .cleanup = dev_clear, |
96ea73db UH |
328 | .scan = NULL, |
329 | .dev_list = NULL, | |
824fba03 | 330 | .dev_clear = dev_clear, |
035a1078 BV |
331 | .config_get = config_get, |
332 | .config_set = config_set, | |
9a6517d1 | 333 | .config_list = config_list, |
6078d2c9 | 334 | .dev_open = dev_open, |
aa48adf9 | 335 | .dev_close = dev_close, |
6078d2c9 | 336 | .dev_acquisition_start = dev_acquisition_start, |
69040b7c | 337 | .dev_acquisition_stop = NULL, |
96ea73db | 338 | .priv = NULL, |
7d658874 | 339 | }; |