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