Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the sigrok project. |
| 3 | * |
Bert Vermeulen | c73d2ea | 2012-02-13 14:31:51 +0100 | [diff] [blame] | 4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 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 <stdio.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <unistd.h> |
| 23 | #include <string.h> |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 24 | #include <glib.h> |
Bert Vermeulen | 45c59c8 | 2012-07-05 00:55:07 +0200 | [diff] [blame] | 25 | #include "libsigrok.h" |
| 26 | #include "libsigrok-internal.h" |
Bert Vermeulen | aa4b110 | 2011-01-24 07:46:16 +0100 | [diff] [blame] | 27 | |
Uwe Hermann | 3d2efd7 | 2012-02-05 13:36:03 +0100 | [diff] [blame] | 28 | /* demo.c. TODO: Should not be global! */ |
| 29 | extern SR_PRIV GIOChannel channels[2]; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 30 | |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 31 | struct source { |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 32 | int timeout; |
Uwe Hermann | d08490a | 2012-02-29 21:56:24 +0100 | [diff] [blame] | 33 | sr_receive_data_callback_t cb; |
Uwe Hermann | 1f9813e | 2012-02-29 22:32:34 +0100 | [diff] [blame] | 34 | void *cb_data; |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 35 | |
| 36 | /* This is used to keep track of the object (fd, pollfd or channel) which is |
| 37 | * being polled and will be used to match the source when removing it again. |
| 38 | */ |
| 39 | gintptr poll_object; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 40 | }; |
| 41 | |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 42 | /* There can only be one session at a time. */ |
Uwe Hermann | a0ecd83 | 2011-12-28 22:55:21 +0100 | [diff] [blame] | 43 | /* 'session' is not static, it's used elsewhere (via 'extern'). */ |
Uwe Hermann | 2872d21 | 2011-02-08 17:50:29 +0100 | [diff] [blame] | 44 | struct sr_session *session; |
Uwe Hermann | a0ecd83 | 2011-12-28 22:55:21 +0100 | [diff] [blame] | 45 | static int num_sources = 0; |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 46 | |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 47 | /* Both "sources" and "pollfds" are of the same size and contain pairs of |
| 48 | * descriptor and callback function. We can not embed the GPollFD into the |
| 49 | * source struct since we want to be able to pass the array of all poll |
| 50 | * descriptors to g_poll. |
| 51 | */ |
Uwe Hermann | a0ecd83 | 2011-12-28 22:55:21 +0100 | [diff] [blame] | 52 | static struct source *sources = NULL; |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 53 | static GPollFD *pollfds; |
Uwe Hermann | a0ecd83 | 2011-12-28 22:55:21 +0100 | [diff] [blame] | 54 | static int source_timeout = -1; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 55 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 56 | /** |
| 57 | * Create a new session. |
| 58 | * |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 59 | * TODO: Should it use the file-global "session" variable or take an argument? |
| 60 | * The same question applies to all the other session functions. |
| 61 | * |
| 62 | * @return A pointer to the newly allocated session, or NULL upon errors. |
| 63 | */ |
Uwe Hermann | 1a081ca | 2012-02-01 23:40:35 +0100 | [diff] [blame] | 64 | SR_API struct sr_session *sr_session_new(void) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 65 | { |
Uwe Hermann | 133a37b | 2012-02-11 20:06:46 +0100 | [diff] [blame] | 66 | if (!(session = g_try_malloc0(sizeof(struct sr_session)))) { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 67 | sr_err("session: %s: session malloc failed", __func__); |
| 68 | return NULL; /* TODO: SR_ERR_MALLOC? */ |
| 69 | } |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 70 | |
| 71 | return session; |
| 72 | } |
| 73 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 74 | /** |
| 75 | * Destroy the current session. |
| 76 | * |
| 77 | * This frees up all memory used by the session. |
| 78 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 79 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 80 | */ |
Uwe Hermann | 1a081ca | 2012-02-01 23:40:35 +0100 | [diff] [blame] | 81 | SR_API int sr_session_destroy(void) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 82 | { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 83 | if (!session) { |
Uwe Hermann | 133a37b | 2012-02-11 20:06:46 +0100 | [diff] [blame] | 84 | sr_err("session: %s: session was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 85 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 86 | } |
| 87 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 88 | g_slist_free(session->devs); |
| 89 | session->devs = NULL; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 90 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 91 | /* TODO: Error checks needed? */ |
| 92 | |
Bert Vermeulen | aa4b110 | 2011-01-24 07:46:16 +0100 | [diff] [blame] | 93 | /* TODO: Loop over protocol decoders and free them. */ |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 94 | |
| 95 | g_free(session); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 96 | session = NULL; |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 97 | |
| 98 | return SR_OK; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 99 | } |
| 100 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 101 | /** |
| 102 | * Remove all the devices from the current session. TODO? |
| 103 | * |
| 104 | * The session itself (i.e., the struct sr_session) is not free'd and still |
| 105 | * exists after this function returns. |
| 106 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 107 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 108 | */ |
Uwe Hermann | 01c3e9d | 2012-03-28 21:55:48 +0200 | [diff] [blame] | 109 | SR_API int sr_session_dev_remove_all(void) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 110 | { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 111 | if (!session) { |
Uwe Hermann | 133a37b | 2012-02-11 20:06:46 +0100 | [diff] [blame] | 112 | sr_err("session: %s: session was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 113 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 114 | } |
| 115 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 116 | g_slist_free(session->devs); |
| 117 | session->devs = NULL; |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 118 | |
| 119 | return SR_OK; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 120 | } |
| 121 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 122 | /** |
| 123 | * Add a device to the current session. |
| 124 | * |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 125 | * @param dev The device to add to the current session. Must not be NULL. |
Uwe Hermann | c09f0b5 | 2012-02-28 23:52:30 +0100 | [diff] [blame] | 126 | * Also, dev->driver and dev->driver->dev_open must not be NULL. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 127 | * |
| 128 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
| 129 | */ |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 130 | SR_API int sr_session_dev_add(struct sr_dev *dev) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 131 | { |
| 132 | int ret; |
| 133 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 134 | if (!dev) { |
| 135 | sr_err("session: %s: dev was NULL", __func__); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 136 | return SR_ERR_ARG; |
| 137 | } |
| 138 | |
Uwe Hermann | d6eb0c3 | 2012-03-18 12:57:34 +0100 | [diff] [blame] | 139 | if (!session) { |
| 140 | sr_err("session: %s: session was NULL", __func__); |
| 141 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 142 | } |
| 143 | |
Uwe Hermann | d6eb0c3 | 2012-03-18 12:57:34 +0100 | [diff] [blame] | 144 | /* If dev->driver is NULL, this is a virtual device. */ |
| 145 | if (!dev->driver) { |
| 146 | sr_dbg("session: %s: dev->driver was NULL, this seems to be " |
| 147 | "a virtual device; continuing", __func__); |
| 148 | /* Just add the device, don't run dev_open(). */ |
| 149 | session->devs = g_slist_append(session->devs, dev); |
| 150 | return SR_OK; |
| 151 | } |
| 152 | |
| 153 | /* dev->driver is non-NULL (i.e. we have a real device). */ |
Uwe Hermann | c09f0b5 | 2012-02-28 23:52:30 +0100 | [diff] [blame] | 154 | if (!dev->driver->dev_open) { |
| 155 | sr_err("session: %s: dev->driver->dev_open was NULL", |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 156 | __func__); |
Uwe Hermann | 8ec95d2 | 2012-03-21 19:28:43 +0100 | [diff] [blame] | 157 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 158 | } |
| 159 | |
Uwe Hermann | c09f0b5 | 2012-02-28 23:52:30 +0100 | [diff] [blame] | 160 | if ((ret = dev->driver->dev_open(dev->driver_index)) != SR_OK) { |
Uwe Hermann | e7eb703 | 2012-02-18 11:57:43 +0100 | [diff] [blame] | 161 | sr_err("session: %s: dev_open failed (%d)", __func__, ret); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 162 | return ret; |
Bert Vermeulen | aa4b110 | 2011-01-24 07:46:16 +0100 | [diff] [blame] | 163 | } |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 164 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 165 | session->devs = g_slist_append(session->devs, dev); |
Bert Vermeulen | aa4b110 | 2011-01-24 07:46:16 +0100 | [diff] [blame] | 166 | |
Uwe Hermann | e46b8fb | 2011-01-29 16:23:12 +0100 | [diff] [blame] | 167 | return SR_OK; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 168 | } |
| 169 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 170 | /** |
Uwe Hermann | 01c3e9d | 2012-03-28 21:55:48 +0200 | [diff] [blame] | 171 | * Remove all datafeed callbacks in the current session. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 172 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 173 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 174 | */ |
Uwe Hermann | 01c3e9d | 2012-03-28 21:55:48 +0200 | [diff] [blame] | 175 | SR_API int sr_session_datafeed_callback_remove_all(void) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 176 | { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 177 | if (!session) { |
| 178 | sr_err("session: %s: session was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 179 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 180 | } |
| 181 | |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 182 | g_slist_free(session->datafeed_callbacks); |
| 183 | session->datafeed_callbacks = NULL; |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 184 | |
| 185 | return SR_OK; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 186 | } |
| 187 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 188 | /** |
| 189 | * Add a datafeed callback to the current session. |
| 190 | * |
Uwe Hermann | d08490a | 2012-02-29 21:56:24 +0100 | [diff] [blame] | 191 | * @param cb Function to call when a chunk of data is received. |
Uwe Hermann | 0abee50 | 2012-03-04 15:08:11 +0100 | [diff] [blame] | 192 | * Must not be NULL. |
Bert Vermeulen | a1645fc | 2012-02-13 03:36:32 +0100 | [diff] [blame] | 193 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 194 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 195 | */ |
Uwe Hermann | d08490a | 2012-02-29 21:56:24 +0100 | [diff] [blame] | 196 | SR_API int sr_session_datafeed_callback_add(sr_datafeed_callback_t cb) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 197 | { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 198 | if (!session) { |
| 199 | sr_err("session: %s: session was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 200 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 201 | } |
| 202 | |
Uwe Hermann | 0abee50 | 2012-03-04 15:08:11 +0100 | [diff] [blame] | 203 | if (!cb) { |
| 204 | sr_err("session: %s: cb was NULL", __func__); |
| 205 | return SR_ERR_ARG; |
| 206 | } |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 207 | |
Uwe Hermann | 62c8202 | 2010-04-15 20:16:53 +0200 | [diff] [blame] | 208 | session->datafeed_callbacks = |
Uwe Hermann | d08490a | 2012-02-29 21:56:24 +0100 | [diff] [blame] | 209 | g_slist_append(session->datafeed_callbacks, cb); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 210 | |
| 211 | return SR_OK; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 212 | } |
| 213 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 214 | /** |
| 215 | * TODO. |
| 216 | */ |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 217 | static int sr_session_run_poll(void) |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 218 | { |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 219 | int ret, i; |
| 220 | |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 221 | while (session->running) { |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 222 | ret = g_poll(pollfds, num_sources, source_timeout); |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 223 | |
| 224 | for (i = 0; i < num_sources; i++) { |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 225 | if (pollfds[i].revents > 0 || (ret == 0 |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 226 | && source_timeout == sources[i].timeout)) { |
| 227 | /* |
| 228 | * Invoke the source's callback on an event, |
| 229 | * or if the poll timeout out and this source |
| 230 | * asked for that timeout. |
| 231 | */ |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 232 | if (!sources[i].cb(pollfds[i].fd, pollfds[i].revents, |
Uwe Hermann | 1f9813e | 2012-02-29 22:32:34 +0100 | [diff] [blame] | 233 | sources[i].cb_data)) |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 234 | sr_session_source_remove(pollfds[i].fd); |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 235 | } |
| 236 | } |
| 237 | } |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 238 | |
| 239 | return SR_OK; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 240 | } |
| 241 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 242 | /** |
| 243 | * Start a session. |
| 244 | * |
Bert Vermeulen | a1645fc | 2012-02-13 03:36:32 +0100 | [diff] [blame] | 245 | * There can only be one session at a time. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 246 | * |
| 247 | * @return SR_OK upon success, SR_ERR upon errors. |
| 248 | */ |
Uwe Hermann | 1a081ca | 2012-02-01 23:40:35 +0100 | [diff] [blame] | 249 | SR_API int sr_session_start(void) |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 250 | { |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 251 | struct sr_dev *dev; |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 252 | GSList *l; |
| 253 | int ret; |
| 254 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 255 | if (!session) { |
| 256 | sr_err("session: %s: session was NULL; a session must be " |
| 257 | "created first, before starting it.", __func__); |
Uwe Hermann | 0abee50 | 2012-03-04 15:08:11 +0100 | [diff] [blame] | 258 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 259 | } |
| 260 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 261 | if (!session->devs) { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 262 | /* TODO: Actually the case? */ |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 263 | sr_err("session: %s: session->devs was NULL; a session " |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 264 | "cannot be started without devices.", __func__); |
Uwe Hermann | 0abee50 | 2012-03-04 15:08:11 +0100 | [diff] [blame] | 265 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 266 | } |
| 267 | |
Uwe Hermann | c09f0b5 | 2012-02-28 23:52:30 +0100 | [diff] [blame] | 268 | /* TODO: Check driver_index validity? */ |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 269 | |
Uwe Hermann | b08024a | 2011-04-14 09:46:53 +0200 | [diff] [blame] | 270 | sr_info("session: starting"); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 271 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 272 | for (l = session->devs; l; l = l->next) { |
| 273 | dev = l->data; |
| 274 | /* TODO: Check for dev != NULL. */ |
Uwe Hermann | c09f0b5 | 2012-02-28 23:52:30 +0100 | [diff] [blame] | 275 | if ((ret = dev->driver->dev_acquisition_start( |
| 276 | dev->driver_index, dev)) != SR_OK) { |
Renato Caldas | 446a037 | 2012-01-06 00:04:29 +0000 | [diff] [blame] | 277 | sr_err("session: %s: could not start an acquisition " |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 278 | "(%d)", __func__, ret); |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 279 | break; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 280 | } |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 281 | } |
| 282 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 283 | /* TODO: What if there are multiple devices? Which return code? */ |
| 284 | |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 285 | return ret; |
| 286 | } |
| 287 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 288 | /** |
| 289 | * Run the session. |
| 290 | * |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 291 | * TODO: Various error checks etc. |
| 292 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 293 | * @return SR_OK upon success, SR_ERR_BUG upon errors. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 294 | */ |
Uwe Hermann | 1a081ca | 2012-02-01 23:40:35 +0100 | [diff] [blame] | 295 | SR_API int sr_session_run(void) |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 296 | { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 297 | if (!session) { |
| 298 | sr_err("session: %s: session was NULL; a session must be " |
| 299 | "created first, before running it.", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 300 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 301 | } |
| 302 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 303 | if (!session->devs) { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 304 | /* TODO: Actually the case? */ |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 305 | sr_err("session: %s: session->devs was NULL; a session " |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 306 | "cannot be run without devices.", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 307 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 308 | } |
| 309 | |
Uwe Hermann | b08024a | 2011-04-14 09:46:53 +0200 | [diff] [blame] | 310 | sr_info("session: running"); |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 311 | session->running = TRUE; |
| 312 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 313 | /* Do we have real sources? */ |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 314 | if (num_sources == 1 && pollfds[0].fd == -1) { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 315 | /* Dummy source, freewheel over it. */ |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 316 | while (session->running) |
Uwe Hermann | 1f9813e | 2012-02-29 22:32:34 +0100 | [diff] [blame] | 317 | sources[0].cb(-1, 0, sources[0].cb_data); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 318 | } else { |
| 319 | /* Real sources, use g_poll() main loop. */ |
Uwe Hermann | 8a2efef | 2011-02-08 18:00:49 +0100 | [diff] [blame] | 320 | sr_session_run_poll(); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 321 | } |
| 322 | |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 323 | return SR_OK; |
Bert Vermeulen | 7d65887 | 2011-01-31 22:34:14 +0100 | [diff] [blame] | 324 | } |
| 325 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 326 | /** |
| 327 | * Halt the current session. |
| 328 | * |
Uwe Hermann | 44dae53 | 2012-02-17 20:44:19 +0100 | [diff] [blame] | 329 | * This requests the current session be stopped as soon as possible, for |
| 330 | * example on receiving an SR_DF_END packet. |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 331 | * |
| 332 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 333 | */ |
Uwe Hermann | 1a081ca | 2012-02-01 23:40:35 +0100 | [diff] [blame] | 334 | SR_API int sr_session_halt(void) |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 335 | { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 336 | if (!session) { |
| 337 | sr_err("session: %s: session was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 338 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 339 | } |
| 340 | |
Uwe Hermann | b08024a | 2011-04-14 09:46:53 +0200 | [diff] [blame] | 341 | sr_info("session: halting"); |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 342 | session->running = FALSE; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 343 | |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 344 | return SR_OK; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 345 | } |
| 346 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 347 | /** |
| 348 | * Stop the current session. |
| 349 | * |
Bert Vermeulen | a1645fc | 2012-02-13 03:36:32 +0100 | [diff] [blame] | 350 | * The current session is stopped immediately, with all acquisition sessions |
Uwe Hermann | c09f0b5 | 2012-02-28 23:52:30 +0100 | [diff] [blame] | 351 | * being stopped and hardware drivers cleaned up. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 352 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 353 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 354 | */ |
Uwe Hermann | 1a081ca | 2012-02-01 23:40:35 +0100 | [diff] [blame] | 355 | SR_API int sr_session_stop(void) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 356 | { |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 357 | struct sr_dev *dev; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 358 | GSList *l; |
| 359 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 360 | if (!session) { |
| 361 | sr_err("session: %s: session was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 362 | return SR_ERR_BUG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 363 | } |
| 364 | |
Uwe Hermann | b08024a | 2011-04-14 09:46:53 +0200 | [diff] [blame] | 365 | sr_info("session: stopping"); |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 366 | session->running = FALSE; |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 367 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 368 | for (l = session->devs; l; l = l->next) { |
| 369 | dev = l->data; |
| 370 | /* Check for dev != NULL. */ |
Uwe Hermann | c09f0b5 | 2012-02-28 23:52:30 +0100 | [diff] [blame] | 371 | if (dev->driver) { |
| 372 | if (dev->driver->dev_acquisition_stop) |
| 373 | dev->driver->dev_acquisition_stop(dev->driver_index, dev); |
| 374 | if (dev->driver->cleanup) |
| 375 | dev->driver->cleanup(); |
Bert Vermeulen | 8c76be5 | 2012-01-08 22:05:00 +0100 | [diff] [blame] | 376 | } |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 377 | } |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 378 | |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 379 | return SR_OK; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 380 | } |
| 381 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 382 | /** |
Bert Vermeulen | a1645fc | 2012-02-13 03:36:32 +0100 | [diff] [blame] | 383 | * Debug helper. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 384 | * |
Bert Vermeulen | 996b0c7 | 2012-02-13 02:13:51 +0100 | [diff] [blame] | 385 | * @param packet The packet to show debugging information for. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 386 | */ |
Bert Vermeulen | 18beaef | 2012-02-13 00:08:23 +0100 | [diff] [blame] | 387 | static void datafeed_dump(struct sr_datafeed_packet *packet) |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 388 | { |
| 389 | struct sr_datafeed_logic *logic; |
Bert Vermeulen | ee7489d | 2012-04-22 18:11:31 +0200 | [diff] [blame] | 390 | struct sr_datafeed_analog *analog; |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 391 | |
| 392 | switch (packet->type) { |
| 393 | case SR_DF_HEADER: |
| 394 | sr_dbg("bus: received SR_DF_HEADER"); |
| 395 | break; |
| 396 | case SR_DF_TRIGGER: |
Bert Vermeulen | 0146970 | 2012-02-01 02:59:41 +0100 | [diff] [blame] | 397 | sr_dbg("bus: received SR_DF_TRIGGER"); |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 398 | break; |
Bert Vermeulen | ee7489d | 2012-04-22 18:11:31 +0200 | [diff] [blame] | 399 | case SR_DF_META_LOGIC: |
| 400 | sr_dbg("bus: received SR_DF_META_LOGIC"); |
| 401 | break; |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 402 | case SR_DF_LOGIC: |
| 403 | logic = packet->payload; |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 404 | /* TODO: Check for logic != NULL. */ |
Bert Vermeulen | 0146970 | 2012-02-01 02:59:41 +0100 | [diff] [blame] | 405 | sr_dbg("bus: received SR_DF_LOGIC %" PRIu64 " bytes", logic->length); |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 406 | break; |
Bert Vermeulen | ee7489d | 2012-04-22 18:11:31 +0200 | [diff] [blame] | 407 | case SR_DF_META_ANALOG: |
| 408 | sr_dbg("bus: received SR_DF_META_LOGIC"); |
| 409 | break; |
| 410 | case SR_DF_ANALOG: |
| 411 | analog = packet->payload; |
| 412 | /* TODO: Check for analog != NULL. */ |
| 413 | sr_dbg("bus: received SR_DF_ANALOG %d samples", analog->num_samples); |
| 414 | break; |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 415 | case SR_DF_END: |
| 416 | sr_dbg("bus: received SR_DF_END"); |
| 417 | break; |
Bert Vermeulen | 6ea7669 | 2012-04-30 19:55:06 +0200 | [diff] [blame] | 418 | case SR_DF_FRAME_BEGIN: |
| 419 | sr_dbg("bus: received SR_DF_FRAME_BEGIN"); |
| 420 | break; |
| 421 | case SR_DF_FRAME_END: |
| 422 | sr_dbg("bus: received SR_DF_FRAME_END"); |
| 423 | break; |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 424 | default: |
Bert Vermeulen | 18beaef | 2012-02-13 00:08:23 +0100 | [diff] [blame] | 425 | sr_dbg("bus: received unknown packet type %d", packet->type); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 426 | break; |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 427 | } |
Bert Vermeulen | 7d2afd6 | 2011-06-20 11:42:43 +0200 | [diff] [blame] | 428 | } |
| 429 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 430 | /** |
Bert Vermeulen | a1645fc | 2012-02-13 03:36:32 +0100 | [diff] [blame] | 431 | * Send a packet to whatever is listening on the datafeed bus. |
| 432 | * |
| 433 | * Hardware drivers use this to send a data packet to the frontend. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 434 | * |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 435 | * @param dev TODO. |
Uwe Hermann | 31ccebc | 2012-02-29 22:08:45 +0100 | [diff] [blame] | 436 | * @param packet The datafeed packet to send to the session bus. |
Uwe Hermann | 44dae53 | 2012-02-17 20:44:19 +0100 | [diff] [blame] | 437 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 438 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 439 | */ |
Uwe Hermann | 31ccebc | 2012-02-29 22:08:45 +0100 | [diff] [blame] | 440 | SR_PRIV int sr_session_send(struct sr_dev *dev, |
| 441 | struct sr_datafeed_packet *packet) |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 442 | { |
| 443 | GSList *l; |
Uwe Hermann | d08490a | 2012-02-29 21:56:24 +0100 | [diff] [blame] | 444 | sr_datafeed_callback_t cb; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 445 | |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 446 | if (!dev) { |
| 447 | sr_err("session: %s: dev was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 448 | return SR_ERR_ARG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 449 | } |
| 450 | |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 451 | if (!packet) { |
| 452 | sr_err("session: %s: packet was NULL", __func__); |
| 453 | return SR_ERR_ARG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 454 | } |
| 455 | |
Uwe Hermann | 62c8202 | 2010-04-15 20:16:53 +0200 | [diff] [blame] | 456 | for (l = session->datafeed_callbacks; l; l = l->next) { |
Bert Vermeulen | 18beaef | 2012-02-13 00:08:23 +0100 | [diff] [blame] | 457 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
| 458 | datafeed_dump(packet); |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 459 | cb = l->data; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 460 | /* TODO: Check for cb != NULL. */ |
Uwe Hermann | bb7ef79 | 2012-02-17 22:25:01 +0100 | [diff] [blame] | 461 | cb(dev, packet); |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 462 | } |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 463 | |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 464 | return SR_OK; |
Uwe Hermann | a1bb33a | 2010-04-02 20:18:27 +0200 | [diff] [blame] | 465 | } |
| 466 | |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 467 | static int _sr_session_source_add(GPollFD *pollfd, int timeout, |
| 468 | sr_receive_data_callback_t cb, void *cb_data, gintptr poll_object) |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 469 | { |
| 470 | struct source *new_sources, *s; |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 471 | GPollFD *new_pollfds; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 472 | |
Uwe Hermann | d08490a | 2012-02-29 21:56:24 +0100 | [diff] [blame] | 473 | if (!cb) { |
| 474 | sr_err("session: %s: cb was NULL", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 475 | return SR_ERR_ARG; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 476 | } |
| 477 | |
Uwe Hermann | 1f9813e | 2012-02-29 22:32:34 +0100 | [diff] [blame] | 478 | /* Note: cb_data can be NULL, that's not a bug. */ |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 479 | |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 480 | new_pollfds = g_try_realloc(pollfds, sizeof(GPollFD) * (num_sources + 1)); |
| 481 | if (!new_pollfds) { |
| 482 | sr_err("session: %s: new_sources malloc failed", __func__); |
| 483 | return SR_ERR_MALLOC; |
| 484 | } |
| 485 | |
Lars-Peter Clausen | 2bccd32 | 2012-06-30 20:54:42 +0200 | [diff] [blame] | 486 | new_sources = g_try_realloc(sources, sizeof(struct source) * (num_sources + 1)); |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 487 | if (!new_sources) { |
| 488 | sr_err("session: %s: new_sources malloc failed", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 489 | return SR_ERR_MALLOC; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 490 | } |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 491 | |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 492 | new_pollfds[num_sources] = *pollfd; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 493 | s = &new_sources[num_sources++]; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 494 | s->timeout = timeout; |
Uwe Hermann | d08490a | 2012-02-29 21:56:24 +0100 | [diff] [blame] | 495 | s->cb = cb; |
Uwe Hermann | 1f9813e | 2012-02-29 22:32:34 +0100 | [diff] [blame] | 496 | s->cb_data = cb_data; |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 497 | s->poll_object = poll_object; |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 498 | pollfds = new_pollfds; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 499 | sources = new_sources; |
| 500 | |
| 501 | if (timeout != source_timeout && timeout > 0 |
| 502 | && (source_timeout == -1 || timeout < source_timeout)) |
| 503 | source_timeout = timeout; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 504 | |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 505 | return SR_OK; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 506 | } |
| 507 | |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 508 | /** |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 509 | * Add a event source for a file descriptor. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 510 | * |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 511 | * @param fd The file descriptor. |
| 512 | * @param events Events to check for. |
| 513 | * @param timeout Max time to wait before the callback is called, ignored if 0. |
| 514 | * @param cb Callback function to add. Must not be NULL. |
| 515 | * @param cb_data Data for the callback function. Can be NULL. |
Uwe Hermann | 44dae53 | 2012-02-17 20:44:19 +0100 | [diff] [blame] | 516 | * |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 517 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 518 | * SR_ERR_MALLOC upon memory allocation errors. |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 519 | */ |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 520 | SR_API int sr_session_source_add(int fd, int events, int timeout, |
| 521 | sr_receive_data_callback_t cb, void *cb_data) |
| 522 | { |
| 523 | GPollFD p; |
| 524 | |
| 525 | #ifdef _WIN32 |
| 526 | g_io_channel_win32_make_pollfd(&channels[0], |
| 527 | events, &p); |
| 528 | #else |
| 529 | p.fd = fd; |
| 530 | p.events = events; |
| 531 | #endif |
| 532 | |
| 533 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)fd); |
| 534 | } |
| 535 | |
| 536 | /** |
| 537 | * Add a event source for a GPollFD |
| 538 | * |
| 539 | * TODO: More error checks etc. |
| 540 | * |
| 541 | * @param pollfd The GPollFD. |
| 542 | * @param timeout Max time to wait before the callback is called, ignored if 0. |
| 543 | * @param cb Callback function to add. Must not be NULL. |
| 544 | * @param cb_data Data for the callback function. Can be NULL. |
| 545 | * |
| 546 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
| 547 | * SR_ERR_MALLOC upon memory allocation errors. |
| 548 | */ |
| 549 | SR_API int sr_session_source_add_pollfd(GPollFD *pollfd, int timeout, |
| 550 | sr_receive_data_callback_t cb, void *cb_data) |
| 551 | { |
| 552 | return _sr_session_source_add(pollfd, timeout, cb, cb_data, (gintptr)pollfd); |
| 553 | } |
| 554 | |
| 555 | /** |
| 556 | * Add a event source for a GIOChannel |
| 557 | * |
| 558 | * TODO: More error checks etc. |
| 559 | * |
| 560 | * @param channel The GIOChannel. |
| 561 | * @param events Events to poll on. |
| 562 | * @param timeout Max time to wait before the callback is called, ignored if 0. |
| 563 | * @param cb Callback function to add. Must not be NULL. |
| 564 | * @param cb_data Data for the callback function. Can be NULL. |
| 565 | * |
| 566 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
| 567 | * SR_ERR_MALLOC upon memory allocation errors. |
| 568 | */ |
| 569 | SR_API int sr_session_source_add_channel(GIOChannel *channel, int events, int timeout, |
| 570 | sr_receive_data_callback_t cb, void *cb_data) |
| 571 | { |
| 572 | GPollFD p; |
| 573 | |
| 574 | #ifdef _WIN32 |
| 575 | g_io_channel_win32_make_pollfd(channel, |
| 576 | events, &p); |
| 577 | #else |
| 578 | p.fd = g_io_channel_unix_get_fd(channel); |
| 579 | p.events = events; |
| 580 | #endif |
| 581 | |
| 582 | return _sr_session_source_add(&p, timeout, cb, cb_data, (gintptr)channel); |
| 583 | } |
| 584 | |
| 585 | |
| 586 | static int _sr_session_source_remove(gintptr poll_object) |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 587 | { |
| 588 | struct source *new_sources; |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 589 | GPollFD *new_pollfds; |
| 590 | int old; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 591 | |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 592 | if (!sources) { |
| 593 | sr_err("session: %s: sources was NULL", __func__); |
Uwe Hermann | 0abee50 | 2012-03-04 15:08:11 +0100 | [diff] [blame] | 594 | return SR_ERR_BUG; |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 595 | } |
| 596 | |
Lars-Peter Clausen | 2bccd32 | 2012-06-30 20:54:42 +0200 | [diff] [blame] | 597 | for (old = 0; old < num_sources; old++) { |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 598 | if (sources[old].poll_object == poll_object) |
Lars-Peter Clausen | 2bccd32 | 2012-06-30 20:54:42 +0200 | [diff] [blame] | 599 | break; |
| 600 | } |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 601 | |
Lars-Peter Clausen | 2bccd32 | 2012-06-30 20:54:42 +0200 | [diff] [blame] | 602 | /* fd not found, nothing to do */ |
| 603 | if (old == num_sources) |
| 604 | return SR_OK; |
| 605 | |
| 606 | num_sources -= 1; |
| 607 | |
| 608 | if (old != num_sources) { |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 609 | memmove(&pollfds[old], &pollfds[old+1], |
| 610 | (num_sources - old) * sizeof(GPollFD)); |
Lars-Peter Clausen | 2bccd32 | 2012-06-30 20:54:42 +0200 | [diff] [blame] | 611 | memmove(&sources[old], &sources[old+1], |
| 612 | (num_sources - old) * sizeof(struct source)); |
| 613 | } |
| 614 | |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 615 | new_pollfds = g_try_realloc(sources, sizeof(GPollFD) * num_sources); |
| 616 | if (!new_pollfds && num_sources > 0) { |
| 617 | sr_err("session: %s: new_sources malloc failed", __func__); |
| 618 | return SR_ERR_MALLOC; |
| 619 | } |
| 620 | |
| 621 | new_sources = g_try_realloc(sources, sizeof(struct source) * num_sources); |
Lars-Peter Clausen | 2bccd32 | 2012-06-30 20:54:42 +0200 | [diff] [blame] | 622 | if (!new_sources && num_sources > 0) { |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 623 | sr_err("session: %s: new_sources malloc failed", __func__); |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 624 | return SR_ERR_MALLOC; |
Uwe Hermann | 9f45fb3 | 2012-01-02 14:15:25 +0100 | [diff] [blame] | 625 | } |
| 626 | |
Lars-Peter Clausen | 0687dfc | 2012-06-30 20:54:43 +0200 | [diff] [blame] | 627 | pollfds = new_pollfds; |
Lars-Peter Clausen | 2bccd32 | 2012-06-30 20:54:42 +0200 | [diff] [blame] | 628 | sources = new_sources; |
Uwe Hermann | e0508e6 | 2012-01-07 17:08:54 +0100 | [diff] [blame] | 629 | |
| 630 | return SR_OK; |
Bert Vermeulen | 544a458 | 2011-01-30 02:40:55 +0100 | [diff] [blame] | 631 | } |
Lars-Peter Clausen | aac0ea2 | 2012-06-30 20:54:44 +0200 | [diff] [blame^] | 632 | |
| 633 | /* |
| 634 | * Remove the source belonging to the specified file descriptor. |
| 635 | * |
| 636 | * TODO: More error checks. |
| 637 | * |
| 638 | * @param fd: The file descriptor for which the source should be removed. |
| 639 | * |
| 640 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
| 641 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon |
| 642 | * internal errors. |
| 643 | */ |
| 644 | SR_API int sr_session_source_remove(int fd) |
| 645 | { |
| 646 | return _sr_session_source_remove((gintptr)fd); |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * Remove the source belonging to the specified poll descriptor. |
| 651 | * |
| 652 | * TODO: More error checks. |
| 653 | * |
| 654 | * @param pollfd The poll descriptor for which the source should be removed. |
| 655 | * |
| 656 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
| 657 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon |
| 658 | * internal errors. |
| 659 | */ |
| 660 | SR_API int sr_session_source_remove_pollfd(GPollFD *pollfd) |
| 661 | { |
| 662 | return _sr_session_source_remove((gintptr)pollfd); |
| 663 | } |
| 664 | |
| 665 | /* |
| 666 | * Remove the source belonging to the specified channel. |
| 667 | * |
| 668 | * TODO: More error checks. |
| 669 | * |
| 670 | * @parama channel: The channel for which the source should be removed. |
| 671 | * |
| 672 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
| 673 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon |
| 674 | * internal errors. |
| 675 | */ |
| 676 | SR_API int sr_session_source_remove_channel(GIOChannel *channel) |
| 677 | { |
| 678 | return _sr_session_source_remove((gintptr)channel); |
| 679 | } |