]>
Commit | Line | Data |
---|---|---|
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 | |
29a27196 UH |
29 | /* Message logging helpers with subsystem-specific prefix string. */ |
30 | #define LOG_PREFIX "virtual-session: " | |
31 | #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args) | |
32 | #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args) | |
33 | #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args) | |
34 | #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args) | |
35 | #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args) | |
36 | #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args) | |
a885ce3e | 37 | |
7d658874 | 38 | /* size of payloads sent across the session bus */ |
b4bd7088 | 39 | /** @cond PRIVATE */ |
8ff6afc9 | 40 | #define CHUNKSIZE (512 * 1024) |
b4bd7088 | 41 | /** @endcond */ |
7d658874 | 42 | |
bb7ef793 | 43 | struct session_vdev { |
40dda2c3 | 44 | char *sessionfile; |
7d658874 BV |
45 | char *capturefile; |
46 | struct zip *archive; | |
47 | struct zip_file *capfile; | |
cb1e389c | 48 | int bytes_read; |
7d658874 | 49 | uint64_t samplerate; |
f1b296fc | 50 | uint64_t total_samples; |
7d658874 BV |
51 | int unitsize; |
52 | int num_probes; | |
53 | }; | |
54 | ||
d68e2d1a | 55 | static GSList *dev_insts = NULL; |
915f7cc8 | 56 | static const int hwcaps[] = { |
1953564a BV |
57 | SR_CONF_CAPTUREFILE, |
58 | SR_CONF_CAPTURE_UNITSIZE, | |
7d658874 BV |
59 | 0, |
60 | }; | |
61 | ||
f1b296fc | 62 | static int receive_data(int fd, int revents, const struct sr_dev_inst *cb_sdi) |
7d658874 | 63 | { |
d68e2d1a | 64 | struct sr_dev_inst *sdi; |
bb7ef793 | 65 | struct session_vdev *vdev; |
7d658874 | 66 | struct sr_datafeed_packet packet; |
9c939c51 | 67 | struct sr_datafeed_logic logic; |
7d658874 BV |
68 | GSList *l; |
69 | void *buf; | |
70 | int ret, got_data; | |
71 | ||
cb93f8a9 UH |
72 | (void)fd; |
73 | (void)revents; | |
7d658874 | 74 | |
a885ce3e | 75 | sr_dbg("Feed chunk."); |
7d658874 BV |
76 | |
77 | got_data = FALSE; | |
d68e2d1a | 78 | for (l = dev_insts; l; l = l->next) { |
7d658874 | 79 | sdi = l->data; |
bb7ef793 UH |
80 | vdev = sdi->priv; |
81 | if (!vdev) | |
7d658874 BV |
82 | /* already done with this instance */ |
83 | continue; | |
84 | ||
b53738ba | 85 | if (!(buf = g_try_malloc(CHUNKSIZE))) { |
a885ce3e | 86 | sr_err("%s: buf malloc failed", __func__); |
a2e46460 | 87 | return FALSE; |
b53738ba UH |
88 | } |
89 | ||
bb7ef793 | 90 | ret = zip_fread(vdev->capfile, buf, CHUNKSIZE); |
7d658874 BV |
91 | if (ret > 0) { |
92 | got_data = TRUE; | |
93 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
94 | packet.payload = &logic; |
95 | logic.length = ret; | |
bb7ef793 | 96 | logic.unitsize = vdev->unitsize; |
9c939c51 | 97 | logic.data = buf; |
bb7ef793 | 98 | vdev->bytes_read += ret; |
f1b296fc | 99 | sr_session_send(cb_sdi, &packet); |
7d658874 BV |
100 | } else { |
101 | /* done with this capture file */ | |
bb7ef793 UH |
102 | zip_fclose(vdev->capfile); |
103 | g_free(vdev->capturefile); | |
104 | g_free(vdev); | |
7d658874 BV |
105 | sdi->priv = NULL; |
106 | } | |
107 | } | |
108 | ||
109 | if (!got_data) { | |
110 | packet.type = SR_DF_END; | |
f1b296fc | 111 | sr_session_send(cb_sdi, &packet); |
b863fb1b | 112 | sr_session_source_remove(-1); |
7d658874 BV |
113 | } |
114 | ||
115 | return TRUE; | |
116 | } | |
117 | ||
118 | /* driver callbacks */ | |
57ab7d9f | 119 | static int hw_cleanup(void); |
7d658874 | 120 | |
34f06b90 | 121 | static int hw_init(struct sr_context *sr_ctx) |
7d658874 | 122 | { |
34f06b90 PS |
123 | (void)sr_ctx; |
124 | ||
61136ea6 | 125 | return SR_OK; |
7d658874 BV |
126 | } |
127 | ||
57ab7d9f | 128 | static int hw_cleanup(void) |
7d658874 BV |
129 | { |
130 | GSList *l; | |
131 | ||
d68e2d1a | 132 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 133 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
134 | g_slist_free(dev_insts); |
135 | dev_insts = NULL; | |
805e9640 | 136 | |
57ab7d9f | 137 | return SR_OK; |
7d658874 BV |
138 | } |
139 | ||
25a0f108 | 140 | static int hw_dev_open(struct sr_dev_inst *sdi) |
7d658874 | 141 | { |
bb7ef793 | 142 | if (!(sdi->priv = g_try_malloc0(sizeof(struct session_vdev)))) { |
a885ce3e | 143 | sr_err("%s: sdi->priv malloc failed", __func__); |
b53738ba UH |
144 | return SR_ERR_MALLOC; |
145 | } | |
146 | ||
d68e2d1a | 147 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
148 | |
149 | return SR_OK; | |
150 | } | |
151 | ||
003595ac | 152 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) |
7d658874 | 153 | { |
bb7ef793 | 154 | struct session_vdev *vdev; |
7d658874 | 155 | |
035a1078 | 156 | switch (id) { |
123e1313 | 157 | case SR_CONF_SAMPLERATE: |
387014de BV |
158 | if (sdi) { |
159 | vdev = sdi->priv; | |
003595ac | 160 | *data = g_variant_new_uint64(vdev->samplerate); |
387014de BV |
161 | } else |
162 | return SR_ERR; | |
163 | break; | |
f1b296fc BV |
164 | case SR_CONF_LIMIT_SAMPLES: |
165 | if (sdi) { | |
166 | vdev = sdi->priv; | |
167 | *data = g_variant_new_uint64(vdev->total_samples); | |
168 | } else | |
169 | return SR_ERR; | |
170 | break; | |
387014de BV |
171 | default: |
172 | return SR_ERR_ARG; | |
173 | } | |
7d658874 | 174 | |
387014de | 175 | return SR_OK; |
7d658874 BV |
176 | } |
177 | ||
003595ac | 178 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) |
7d658874 | 179 | { |
bb7ef793 | 180 | struct session_vdev *vdev; |
7d658874 | 181 | |
6f4b1868 | 182 | vdev = sdi->priv; |
7d658874 | 183 | |
035a1078 | 184 | switch (id) { |
1953564a | 185 | case SR_CONF_SAMPLERATE: |
003595ac | 186 | vdev->samplerate = g_variant_get_uint64(data); |
a885ce3e | 187 | sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate); |
7d658874 | 188 | break; |
1953564a | 189 | case SR_CONF_SESSIONFILE: |
003595ac | 190 | vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 191 | sr_info("Setting sessionfile to '%s'.", vdev->sessionfile); |
40dda2c3 | 192 | break; |
1953564a | 193 | case SR_CONF_CAPTUREFILE: |
003595ac | 194 | vdev->capturefile = g_strdup(g_variant_get_string(data, NULL)); |
a885ce3e | 195 | sr_info("Setting capturefile to '%s'.", vdev->capturefile); |
7d658874 | 196 | break; |
1953564a | 197 | case SR_CONF_CAPTURE_UNITSIZE: |
003595ac | 198 | vdev->unitsize = g_variant_get_uint64(data); |
7d658874 | 199 | break; |
f1b296fc BV |
200 | case SR_CONF_LIMIT_SAMPLES: |
201 | vdev->total_samples = g_variant_get_uint64(data); | |
202 | break; | |
1953564a | 203 | case SR_CONF_CAPTURE_NUM_PROBES: |
003595ac | 204 | vdev->num_probes = g_variant_get_uint64(data); |
7d658874 BV |
205 | break; |
206 | default: | |
035a1078 | 207 | sr_err("Unknown capability: %d.", id); |
7d658874 BV |
208 | return SR_ERR; |
209 | } | |
210 | ||
211 | return SR_OK; | |
212 | } | |
213 | ||
003595ac | 214 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) |
9a6517d1 BV |
215 | { |
216 | ||
217 | (void)sdi; | |
218 | ||
219 | switch (key) { | |
220 | case SR_CONF_DEVICE_OPTIONS: | |
f1b296fc BV |
221 | // *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
222 | // hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
223 | *data = g_variant_new_from_data(G_VARIANT_TYPE("ai"), | |
224 | hwcaps, ARRAY_SIZE(hwcaps)*sizeof(int32_t), TRUE, NULL, NULL); | |
9a6517d1 BV |
225 | break; |
226 | default: | |
227 | return SR_ERR_ARG; | |
228 | } | |
229 | ||
230 | return SR_OK; | |
231 | } | |
232 | ||
4d684427 BV |
233 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
234 | void *cb_data) | |
7d658874 BV |
235 | { |
236 | struct zip_stat zs; | |
bb7ef793 | 237 | struct session_vdev *vdev; |
ebc34738 | 238 | int ret; |
7d658874 | 239 | |
4d684427 | 240 | vdev = sdi->priv; |
7d658874 | 241 | |
a885ce3e | 242 | sr_info("Opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 243 | vdev->capturefile); |
7d658874 | 244 | |
40dda2c3 | 245 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
a885ce3e | 246 | sr_err("Failed to open session file '%s': " |
40dda2c3 | 247 | "zip error %d\n", vdev->sessionfile, ret); |
7d658874 BV |
248 | return SR_ERR; |
249 | } | |
250 | ||
bb7ef793 | 251 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) == -1) { |
a885ce3e | 252 | sr_err("Failed to check capture file '%s' in " |
40dda2c3 | 253 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
254 | return SR_ERR; |
255 | } | |
256 | ||
bb7ef793 | 257 | if (!(vdev->capfile = zip_fopen(vdev->archive, vdev->capturefile, 0))) { |
a885ce3e | 258 | sr_err("Failed to open capture file '%s' in " |
40dda2c3 | 259 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
260 | return SR_ERR; |
261 | } | |
262 | ||
4afdfd46 | 263 | /* Send header packet to the session bus. */ |
f1b296fc | 264 | std_session_send_df_header(sdi, LOG_PREFIX); |
4afdfd46 | 265 | |
7d658874 | 266 | /* freewheeling source */ |
f1b296fc | 267 | sr_session_source_add(-1, 0, 0, receive_data, sdi); |
7d658874 | 268 | |
7d658874 BV |
269 | return SR_OK; |
270 | } | |
271 | ||
b4bd7088 | 272 | /** @private */ |
c09f0b57 | 273 | SR_PRIV struct sr_dev_driver session_driver = { |
a885ce3e | 274 | .name = "virtual-session", |
5097b0d0 UH |
275 | .longname = "Session-emulating driver", |
276 | .api_version = 1, | |
277 | .init = hw_init, | |
278 | .cleanup = hw_cleanup, | |
035a1078 BV |
279 | .config_get = config_get, |
280 | .config_set = config_set, | |
9a6517d1 | 281 | .config_list = config_list, |
e7eb703f UH |
282 | .dev_open = hw_dev_open, |
283 | .dev_close = NULL, | |
69040b7c UH |
284 | .dev_acquisition_start = hw_dev_acquisition_start, |
285 | .dev_acquisition_stop = NULL, | |
7d658874 | 286 | }; |