Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 1 | /* |
| 2 | * camdevice.c - GStreamer hardware CAM support |
| 3 | * Copyright (C) 2007 Alessandro Decina |
| 4 | * |
| 5 | * Authors: |
| 6 | * Alessandro Decina <alessandro@nnva.org> |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Library General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Library General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Library General Public |
| 19 | * License along with this library; if not, write to the |
Sebastian Dröge | e6513c1 | 2013-07-14 12:12:42 +0200 | [diff] [blame] | 20 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| 21 | * Boston, MA 02110-1301, USA. |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 22 | */ |
| 23 | |
| 24 | #include <glib.h> |
| 25 | #include <sys/ioctl.h> |
| 26 | #include <fcntl.h> |
| 27 | #include <unistd.h> |
| 28 | #include <string.h> |
| 29 | #include <linux/dvb/ca.h> |
| 30 | |
| 31 | #include "camdevice.h" |
| 32 | |
| 33 | #define GST_CAT_DEFAULT cam_debug_cat |
| 34 | |
| 35 | CamDevice * |
| 36 | cam_device_new (void) |
| 37 | { |
| 38 | CamDevice *device = g_new0 (CamDevice, 1); |
| 39 | |
| 40 | device->state = CAM_DEVICE_STATE_CLOSED; |
| 41 | |
| 42 | return device; |
| 43 | } |
| 44 | |
| 45 | static void |
| 46 | reset_state (CamDevice * device) |
| 47 | { |
| 48 | if (device->filename) { |
| 49 | g_free (device->filename); |
| 50 | device->filename = NULL; |
| 51 | } |
| 52 | |
| 53 | if (device->fd) { |
| 54 | close (device->fd); |
| 55 | device->fd = -1; |
| 56 | } |
| 57 | |
| 58 | if (device->cas) { |
| 59 | cam_conditional_access_destroy (device->cas); |
| 60 | device->cas = NULL; |
| 61 | } |
| 62 | |
| 63 | if (device->mgr) { |
| 64 | cam_resource_manager_destroy (device->mgr); |
| 65 | device->mgr = NULL; |
| 66 | } |
| 67 | |
| 68 | if (device->info) { |
| 69 | cam_application_info_destroy (device->info); |
| 70 | device->info = NULL; |
| 71 | } |
| 72 | |
| 73 | if (device->al) { |
| 74 | cam_al_destroy (device->al); |
| 75 | device->al = NULL; |
| 76 | } |
| 77 | |
| 78 | if (device->sl) { |
| 79 | cam_sl_destroy (device->sl); |
| 80 | device->sl = NULL; |
| 81 | } |
| 82 | |
| 83 | if (device->tl) { |
| 84 | cam_tl_destroy (device->tl); |
| 85 | device->tl = NULL; |
| 86 | } |
| 87 | |
| 88 | device->state = CAM_DEVICE_STATE_CLOSED; |
| 89 | } |
| 90 | |
| 91 | void |
| 92 | cam_device_free (CamDevice * device) |
| 93 | { |
| 94 | if (device->state != CAM_DEVICE_STATE_CLOSED) |
| 95 | GST_WARNING ("device not in CLOSED state when free'd"); |
| 96 | |
| 97 | reset_state (device); |
| 98 | g_free (device); |
| 99 | } |
| 100 | |
| 101 | gboolean |
| 102 | cam_device_open (CamDevice * device, const char *filename) |
| 103 | { |
| 104 | ca_caps_t ca_caps; |
| 105 | int ret; |
| 106 | int i; |
Sebastian Dröge | 5a155a0 | 2012-09-14 10:49:31 +0200 | [diff] [blame] | 107 | int count = 10; |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 108 | |
| 109 | g_return_val_if_fail (device != NULL, FALSE); |
| 110 | g_return_val_if_fail (device->state == CAM_DEVICE_STATE_CLOSED, FALSE); |
| 111 | g_return_val_if_fail (filename != NULL, FALSE); |
| 112 | |
Sebastian Dröge | 1491e03 | 2014-06-22 19:09:53 +0200 | [diff] [blame] | 113 | GST_INFO ("opening CA device %s", filename); |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 114 | |
| 115 | ret = open (filename, O_RDWR); |
| 116 | if (ret == -1) { |
Sebastian Dröge | 1491e03 | 2014-06-22 19:09:53 +0200 | [diff] [blame] | 117 | GST_ERROR ("can't open CA device: %s", g_strerror (errno)); |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 118 | return FALSE; |
| 119 | } |
| 120 | |
Sebastian Dröge | 5a155a0 | 2012-09-14 10:49:31 +0200 | [diff] [blame] | 121 | GST_DEBUG ("Successfully opened device %s", filename); |
| 122 | |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 123 | device->fd = ret; |
| 124 | |
| 125 | ret = ioctl (device->fd, CA_RESET); |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 126 | |
Sebastian Dröge | 5a155a0 | 2012-09-14 10:49:31 +0200 | [diff] [blame] | 127 | g_usleep (G_USEC_PER_SEC / 10); |
| 128 | |
| 129 | while (TRUE) { |
| 130 | /* get the capabilities of the CA */ |
| 131 | ret = ioctl (device->fd, CA_GET_CAP, &ca_caps); |
| 132 | if (ret == -1) { |
Sebastian Dröge | 1491e03 | 2014-06-22 19:09:53 +0200 | [diff] [blame] | 133 | GST_ERROR ("CA_GET_CAP ioctl failed: %s", g_strerror (errno)); |
Sebastian Dröge | 5a155a0 | 2012-09-14 10:49:31 +0200 | [diff] [blame] | 134 | reset_state (device); |
| 135 | return FALSE; |
| 136 | } |
| 137 | if (ca_caps.slot_num > 0) |
| 138 | break; |
| 139 | if (!count) { |
| 140 | GST_ERROR ("CA_GET_CAP succeeded but not slots"); |
| 141 | reset_state (device); |
| 142 | return FALSE; |
| 143 | } |
| 144 | count--; |
| 145 | g_usleep (G_USEC_PER_SEC / 5); |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | device->tl = cam_tl_new (device->fd); |
| 149 | device->sl = cam_sl_new (device->tl); |
| 150 | device->al = cam_al_new (device->sl); |
| 151 | |
| 152 | device->mgr = cam_resource_manager_new (); |
| 153 | cam_al_install (device->al, CAM_AL_APPLICATION (device->mgr)); |
| 154 | |
| 155 | device->info = cam_application_info_new (); |
| 156 | cam_al_install (device->al, CAM_AL_APPLICATION (device->info)); |
| 157 | |
| 158 | device->cas = cam_conditional_access_new (); |
| 159 | cam_al_install (device->al, CAM_AL_APPLICATION (device->cas)); |
| 160 | |
| 161 | /* open a connection to each slot */ |
| 162 | for (i = 0; i < ca_caps.slot_num; ++i) { |
| 163 | CamTLConnection *connection; |
| 164 | |
| 165 | ret = cam_tl_create_connection (device->tl, i, &connection); |
| 166 | if (CAM_FAILED (ret)) { |
| 167 | /* just ignore the slot, error out later only if no connection has been |
| 168 | * established */ |
| 169 | GST_WARNING ("connection to slot %d failed, error: %d", i, ret); |
| 170 | continue; |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | if (g_hash_table_size (device->tl->connections) == 0) { |
| 175 | GST_ERROR ("couldn't connect to any slot"); |
| 176 | |
| 177 | reset_state (device); |
| 178 | return FALSE; |
| 179 | } |
| 180 | |
| 181 | device->state = CAM_DEVICE_STATE_OPEN; |
| 182 | device->filename = g_strdup (filename); |
| 183 | |
| 184 | /* poll each connection to initiate the protocol */ |
| 185 | cam_tl_read_all (device->tl, TRUE); |
| 186 | |
| 187 | return TRUE; |
| 188 | } |
| 189 | |
| 190 | void |
| 191 | cam_device_close (CamDevice * device) |
| 192 | { |
| 193 | g_return_if_fail (device != NULL); |
| 194 | g_return_if_fail (device->state == CAM_DEVICE_STATE_OPEN); |
| 195 | |
Sebastian Dröge | 1491e03 | 2014-06-22 19:09:53 +0200 | [diff] [blame] | 196 | GST_INFO ("closing CA device %s", device->filename); |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 197 | reset_state (device); |
| 198 | } |
| 199 | |
| 200 | void |
| 201 | cam_device_poll (CamDevice * device) |
| 202 | { |
| 203 | g_return_if_fail (device != NULL); |
| 204 | g_return_if_fail (device->state == CAM_DEVICE_STATE_OPEN); |
| 205 | |
| 206 | cam_tl_read_all (device->tl, TRUE); |
| 207 | } |
| 208 | |
| 209 | gboolean |
| 210 | cam_device_ready (CamDevice * device) |
| 211 | { |
| 212 | g_return_val_if_fail (device != NULL, FALSE); |
| 213 | g_return_val_if_fail (device->state == CAM_DEVICE_STATE_OPEN, FALSE); |
| 214 | |
| 215 | return device->cas->ready; |
| 216 | } |
| 217 | |
| 218 | void |
| 219 | cam_device_set_pmt (CamDevice * device, |
Sebastian Dröge | 06cb1e4 | 2014-06-28 12:00:27 +0200 | [diff] [blame] | 220 | GstMpegtsPMT * pmt, CamConditionalAccessPmtFlag flag) |
Olivier Naudan | b28313f | 2012-04-16 08:10:18 -0400 | [diff] [blame] | 221 | { |
| 222 | g_return_if_fail (device != NULL); |
| 223 | g_return_if_fail (device->state == CAM_DEVICE_STATE_OPEN); |
| 224 | g_return_if_fail (pmt != NULL); |
| 225 | |
| 226 | cam_conditional_access_set_pmt (device->cas, pmt, flag); |
| 227 | cam_tl_read_all (device->tl, FALSE); |
| 228 | } |