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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 */ | |
b4bd7088 | 30 | /** @cond PRIVATE */ |
8ff6afc9 | 31 | #define CHUNKSIZE (512 * 1024) |
b4bd7088 | 32 | /** @endcond */ |
7d658874 | 33 | |
bb7ef793 | 34 | struct session_vdev { |
40dda2c3 | 35 | char *sessionfile; |
7d658874 BV |
36 | char *capturefile; |
37 | struct zip *archive; | |
38 | struct zip_file *capfile; | |
cb1e389c | 39 | int bytes_read; |
7d658874 BV |
40 | uint64_t samplerate; |
41 | int unitsize; | |
42 | int num_probes; | |
43 | }; | |
44 | ||
d68e2d1a | 45 | static GSList *dev_insts = NULL; |
915f7cc8 | 46 | static const int hwcaps[] = { |
7d658874 BV |
47 | SR_HWCAP_CAPTUREFILE, |
48 | SR_HWCAP_CAPTURE_UNITSIZE, | |
49 | 0, | |
50 | }; | |
51 | ||
9289e273 | 52 | static int receive_data(int fd, int revents, void *cb_data) |
7d658874 | 53 | { |
d68e2d1a | 54 | struct sr_dev_inst *sdi; |
bb7ef793 | 55 | struct session_vdev *vdev; |
7d658874 | 56 | struct sr_datafeed_packet packet; |
9c939c51 | 57 | struct sr_datafeed_logic logic; |
7d658874 BV |
58 | GSList *l; |
59 | void *buf; | |
60 | int ret, got_data; | |
61 | ||
cb93f8a9 UH |
62 | /* Avoid compiler warnings. */ |
63 | (void)fd; | |
64 | (void)revents; | |
7d658874 | 65 | |
b08024a8 | 66 | sr_dbg("session_driver: feed chunk"); |
7d658874 BV |
67 | |
68 | got_data = FALSE; | |
d68e2d1a | 69 | for (l = dev_insts; l; l = l->next) { |
7d658874 | 70 | sdi = l->data; |
bb7ef793 UH |
71 | vdev = sdi->priv; |
72 | if (!vdev) | |
7d658874 BV |
73 | /* already done with this instance */ |
74 | continue; | |
75 | ||
b53738ba | 76 | if (!(buf = g_try_malloc(CHUNKSIZE))) { |
a2e46460 BV |
77 | sr_err("session driver: %s: buf malloc failed", __func__); |
78 | return FALSE; | |
b53738ba UH |
79 | } |
80 | ||
bb7ef793 | 81 | ret = zip_fread(vdev->capfile, buf, CHUNKSIZE); |
7d658874 BV |
82 | if (ret > 0) { |
83 | got_data = TRUE; | |
84 | packet.type = SR_DF_LOGIC; | |
9c939c51 BV |
85 | packet.payload = &logic; |
86 | logic.length = ret; | |
bb7ef793 | 87 | logic.unitsize = vdev->unitsize; |
9c939c51 | 88 | logic.data = buf; |
bb7ef793 | 89 | vdev->bytes_read += ret; |
9289e273 | 90 | sr_session_send(cb_data, &packet); |
7d658874 BV |
91 | } else { |
92 | /* done with this capture file */ | |
bb7ef793 UH |
93 | zip_fclose(vdev->capfile); |
94 | g_free(vdev->capturefile); | |
95 | g_free(vdev); | |
7d658874 BV |
96 | sdi->priv = NULL; |
97 | } | |
98 | } | |
99 | ||
100 | if (!got_data) { | |
101 | packet.type = SR_DF_END; | |
9289e273 | 102 | sr_session_send(cb_data, &packet); |
b863fb1b | 103 | sr_session_source_remove(-1); |
7d658874 BV |
104 | } |
105 | ||
106 | return TRUE; | |
107 | } | |
108 | ||
109 | /* driver callbacks */ | |
57ab7d9f | 110 | static int hw_cleanup(void); |
7d658874 | 111 | |
40dda2c3 | 112 | static int hw_init(void) |
7d658874 | 113 | { |
7d658874 | 114 | |
61136ea6 | 115 | return SR_OK; |
7d658874 BV |
116 | } |
117 | ||
57ab7d9f | 118 | static int hw_cleanup(void) |
7d658874 BV |
119 | { |
120 | GSList *l; | |
121 | ||
d68e2d1a | 122 | for (l = dev_insts; l; l = l->next) |
d3683c42 | 123 | sr_dev_inst_free(l->data); |
d68e2d1a UH |
124 | g_slist_free(dev_insts); |
125 | dev_insts = NULL; | |
805e9640 | 126 | |
57ab7d9f | 127 | return SR_OK; |
7d658874 BV |
128 | } |
129 | ||
25a0f108 | 130 | static int hw_dev_open(struct sr_dev_inst *sdi) |
7d658874 | 131 | { |
b53738ba | 132 | |
bb7ef793 | 133 | if (!(sdi->priv = g_try_malloc0(sizeof(struct session_vdev)))) { |
7b48d6e1 | 134 | sr_err("session driver: %s: sdi->priv malloc failed", __func__); |
b53738ba UH |
135 | return SR_ERR_MALLOC; |
136 | } | |
137 | ||
d68e2d1a | 138 | dev_insts = g_slist_append(dev_insts, sdi); |
7d658874 BV |
139 | |
140 | return SR_OK; | |
141 | } | |
142 | ||
387014de BV |
143 | static int hw_info_get(int info_id, const void **data, |
144 | const struct sr_dev_inst *sdi) | |
7d658874 | 145 | { |
bb7ef793 | 146 | struct session_vdev *vdev; |
7d658874 | 147 | |
387014de BV |
148 | switch (info_id) { |
149 | case SR_DI_HWCAPS: | |
150 | *data = hwcaps; | |
151 | break; | |
152 | case SR_DI_CUR_SAMPLERATE: | |
153 | if (sdi) { | |
154 | vdev = sdi->priv; | |
155 | *data = &vdev->samplerate; | |
156 | } else | |
157 | return SR_ERR; | |
158 | break; | |
159 | default: | |
160 | return SR_ERR_ARG; | |
161 | } | |
7d658874 | 162 | |
387014de | 163 | return SR_OK; |
7d658874 BV |
164 | } |
165 | ||
6f4b1868 BV |
166 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
167 | const void *value) | |
7d658874 | 168 | { |
bb7ef793 | 169 | struct session_vdev *vdev; |
1b79df2f | 170 | const uint64_t *tmp_u64; |
7d658874 | 171 | |
6f4b1868 | 172 | vdev = sdi->priv; |
7d658874 | 173 | |
ffedd0bf | 174 | switch (hwcap) { |
7d658874 BV |
175 | case SR_HWCAP_SAMPLERATE: |
176 | tmp_u64 = value; | |
bb7ef793 | 177 | vdev->samplerate = *tmp_u64; |
9f45fb3a | 178 | sr_info("session driver: setting samplerate to %" PRIu64, |
bb7ef793 | 179 | vdev->samplerate); |
7d658874 | 180 | break; |
40dda2c3 BV |
181 | case SR_HWCAP_SESSIONFILE: |
182 | vdev->sessionfile = g_strdup(value); | |
183 | sr_info("session driver: setting sessionfile to %s", | |
184 | vdev->sessionfile); | |
185 | break; | |
7d658874 | 186 | case SR_HWCAP_CAPTUREFILE: |
bb7ef793 | 187 | vdev->capturefile = g_strdup(value); |
9f45fb3a | 188 | sr_info("session driver: setting capturefile to %s", |
bb7ef793 | 189 | vdev->capturefile); |
7d658874 BV |
190 | break; |
191 | case SR_HWCAP_CAPTURE_UNITSIZE: | |
192 | tmp_u64 = value; | |
bb7ef793 | 193 | vdev->unitsize = *tmp_u64; |
7d658874 BV |
194 | break; |
195 | case SR_HWCAP_CAPTURE_NUM_PROBES: | |
196 | tmp_u64 = value; | |
bb7ef793 | 197 | vdev->num_probes = *tmp_u64; |
7d658874 BV |
198 | break; |
199 | default: | |
9f45fb3a | 200 | sr_err("session driver: %s: unknown capability %d requested", |
ffedd0bf | 201 | __func__, hwcap); |
7d658874 BV |
202 | return SR_ERR; |
203 | } | |
204 | ||
205 | return SR_OK; | |
206 | } | |
207 | ||
4d684427 BV |
208 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
209 | void *cb_data) | |
7d658874 BV |
210 | { |
211 | struct zip_stat zs; | |
bb7ef793 | 212 | struct session_vdev *vdev; |
7d658874 BV |
213 | struct sr_datafeed_header *header; |
214 | struct sr_datafeed_packet *packet; | |
f366e86c | 215 | struct sr_datafeed_meta_logic meta; |
ebc34738 | 216 | int ret; |
7d658874 | 217 | |
4d684427 | 218 | vdev = sdi->priv; |
7d658874 | 219 | |
40dda2c3 | 220 | sr_info("session_driver: opening archive %s file %s", vdev->sessionfile, |
bb7ef793 | 221 | vdev->capturefile); |
7d658874 | 222 | |
40dda2c3 | 223 | if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) { |
7b48d6e1 | 224 | sr_err("session driver: Failed to open session file '%s': " |
40dda2c3 | 225 | "zip error %d\n", vdev->sessionfile, ret); |
7d658874 BV |
226 | return SR_ERR; |
227 | } | |
228 | ||
bb7ef793 | 229 | if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) == -1) { |
7b48d6e1 | 230 | sr_err("session driver: Failed to check capture file '%s' in " |
40dda2c3 | 231 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
232 | return SR_ERR; |
233 | } | |
234 | ||
bb7ef793 | 235 | if (!(vdev->capfile = zip_fopen(vdev->archive, vdev->capturefile, 0))) { |
7b48d6e1 | 236 | sr_err("session driver: Failed to open capture file '%s' in " |
40dda2c3 | 237 | "session file '%s'.", vdev->capturefile, vdev->sessionfile); |
7d658874 BV |
238 | return SR_ERR; |
239 | } | |
240 | ||
241 | /* freewheeling source */ | |
9289e273 | 242 | sr_session_source_add(-1, 0, 0, receive_data, cb_data); |
7d658874 | 243 | |
b53738ba | 244 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
7b48d6e1 | 245 | sr_err("session driver: %s: packet malloc failed", __func__); |
b53738ba UH |
246 | return SR_ERR_MALLOC; |
247 | } | |
248 | ||
249 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
7b48d6e1 | 250 | sr_err("session driver: %s: header malloc failed", __func__); |
b53738ba UH |
251 | return SR_ERR_MALLOC; |
252 | } | |
253 | ||
7d658874 | 254 | /* Send header packet to the session bus. */ |
7d658874 | 255 | packet->type = SR_DF_HEADER; |
7d658874 BV |
256 | packet->payload = (unsigned char *)header; |
257 | header->feed_version = 1; | |
258 | gettimeofday(&header->starttime, NULL); | |
9289e273 | 259 | sr_session_send(cb_data, packet); |
f366e86c BV |
260 | |
261 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
262 | packet->type = SR_DF_META_LOGIC; | |
263 | packet->payload = &meta; | |
264 | meta.samplerate = vdev->samplerate; | |
265 | meta.num_probes = vdev->num_probes; | |
266 | sr_session_send(cb_data, packet); | |
267 | ||
7d658874 BV |
268 | g_free(header); |
269 | g_free(packet); | |
270 | ||
271 | return SR_OK; | |
272 | } | |
273 | ||
b4bd7088 | 274 | /** @private */ |
c09f0b57 | 275 | SR_PRIV struct sr_dev_driver session_driver = { |
5097b0d0 UH |
276 | .name = "session", |
277 | .longname = "Session-emulating driver", | |
278 | .api_version = 1, | |
279 | .init = hw_init, | |
280 | .cleanup = hw_cleanup, | |
e7eb703f UH |
281 | .dev_open = hw_dev_open, |
282 | .dev_close = NULL, | |
387014de | 283 | .info_get = hw_info_get, |
a9a245b4 | 284 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
285 | .dev_acquisition_start = hw_dev_acquisition_start, |
286 | .dev_acquisition_stop = NULL, | |
7d658874 | 287 | }; |