| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Elan driver for libfprint | ||
| 3 | * | ||
| 4 | * Copyright (C) 2017 Igor Filatov <ia.filatov@gmail.com> | ||
| 5 | * Copyright (C) 2018 Sébastien Béchet <sebastien.bechet@osinix.com > | ||
| 6 | * | ||
| 7 | * This library is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * This library is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with this library; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /* | ||
| 23 | * The algorithm which libfprint uses to match fingerprints doesn't like small | ||
| 24 | * images like the ones these drivers produce. There's just not enough minutiae | ||
| 25 | * (recognizable print-specific points) on them for a reliable match. This means | ||
| 26 | * that unless another matching algo is found/implemented, these readers will | ||
| 27 | * not work as good with libfprint as they do with vendor drivers. | ||
| 28 | * | ||
| 29 | * To get bigger images the driver expects you to swipe the finger over the | ||
| 30 | * reader. This works quite well for readers with a rectangular 144x64 sensor. | ||
| 31 | * Worse than real swipe readers but good enough for day-to-day use. It needs | ||
| 32 | * a steady and relatively slow swipe. There are also square 96x96 sensors and | ||
| 33 | * I don't know whether they are in fact usable or not because I don't have one. | ||
| 34 | * I imagine they'd be less reliable because the resulting image is even | ||
| 35 | * smaller. If they can't be made usable with libfprint, I might end up dropping | ||
| 36 | * them because it's better than saying they work when they don't. | ||
| 37 | */ | ||
| 38 | |||
| 39 | #define FP_COMPONENT "elan" | ||
| 40 | |||
| 41 | #include "drivers_api.h" | ||
| 42 | #include "elan.h" | ||
| 43 | |||
| 44 | static unsigned char | ||
| 45 | 300476160 | elan_get_pixel (struct fpi_frame_asmbl_ctx *ctx, | |
| 46 | struct fpi_frame *frame, unsigned int x, | ||
| 47 | unsigned int y) | ||
| 48 | { | ||
| 49 | 300476160 | return frame->data[x + y * ctx->frame_width]; | |
| 50 | } | ||
| 51 | |||
| 52 | static struct fpi_frame_asmbl_ctx assembling_ctx = { | ||
| 53 | .frame_width = 0, | ||
| 54 | .frame_height = 0, | ||
| 55 | .image_width = 0, | ||
| 56 | .get_pixel = elan_get_pixel, | ||
| 57 | }; | ||
| 58 | |||
| 59 | struct _FpiDeviceElan | ||
| 60 | { | ||
| 61 | FpImageDevice parent; | ||
| 62 | |||
| 63 | /* device config */ | ||
| 64 | unsigned short dev_type; | ||
| 65 | unsigned short fw_ver; | ||
| 66 | void (*process_frame) (unsigned short *raw_frame, | ||
| 67 | GSList ** frames); | ||
| 68 | /* end device config */ | ||
| 69 | |||
| 70 | /* commands */ | ||
| 71 | const struct elan_cmd *cmd; | ||
| 72 | int cmd_timeout; | ||
| 73 | /* end commands */ | ||
| 74 | |||
| 75 | /* state */ | ||
| 76 | gboolean active; | ||
| 77 | gboolean deactivating; | ||
| 78 | unsigned char *last_read; | ||
| 79 | unsigned char calib_atts_left; | ||
| 80 | unsigned char calib_status; | ||
| 81 | unsigned short *background; | ||
| 82 | unsigned char frame_width; | ||
| 83 | unsigned char frame_height; | ||
| 84 | unsigned char raw_frame_height; | ||
| 85 | int num_frames; | ||
| 86 | GSList *frames; | ||
| 87 | /* end state */ | ||
| 88 | }; | ||
| 89 |
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387 | G_DEFINE_TYPE (FpiDeviceElan, fpi_device_elan, FP_TYPE_IMAGE_DEVICE); |
| 90 | |||
| 91 | static int | ||
| 92 | 1868747 | cmp_short (const void *a, const void *b) | |
| 93 | { | ||
| 94 | 1868747 | return (int) (*(short *) a - *(short *) b); | |
| 95 | } | ||
| 96 | |||
| 97 | static void | ||
| 98 | 10 | elan_dev_reset_state (FpiDeviceElan *elandev) | |
| 99 | { | ||
| 100 | 10 | G_DEBUG_HERE (); | |
| 101 | |||
| 102 | 10 | elandev->cmd = NULL; | |
| 103 | 10 | elandev->cmd_timeout = ELAN_CMD_TIMEOUT; | |
| 104 | |||
| 105 | 10 | elandev->calib_status = 0; | |
| 106 | |||
| 107 | 10 | g_free (elandev->last_read); | |
| 108 | 10 | elandev->last_read = NULL; | |
| 109 | |||
| 110 | 10 | g_slist_free_full (elandev->frames, g_free); | |
| 111 | 10 | elandev->frames = NULL; | |
| 112 | 10 | elandev->num_frames = 0; | |
| 113 | 10 | } | |
| 114 | |||
| 115 | static void | ||
| 116 | 31 | elan_save_frame (FpiDeviceElan *self, unsigned short *frame) | |
| 117 | { | ||
| 118 | 31 | G_DEBUG_HERE (); | |
| 119 | |||
| 120 | /* so far 3 types of readers by sensor dimensions and orientation have been | ||
| 121 | * seen in the wild: | ||
| 122 | * 1. 144x64. Raw images are in portrait orientation while readers themselves | ||
| 123 | * are placed (e.g. built into a touchpad) in landscape orientation. These | ||
| 124 | * need to be rotated before assembling. | ||
| 125 | * 2. 96x96 rotated. Like the first type but square. Likewise, need to be | ||
| 126 | * rotated before assembling. | ||
| 127 | * 3. 96x96 normal. Square and need NOT be rotated. So far there's only been | ||
| 128 | * 1 report of a 0c03 of this type. Hopefully this type can be identified | ||
| 129 | * by device id (and manufacturers don't just install the readers as they | ||
| 130 | * please). | ||
| 131 | * we also discard stripes of 'frame_margin' from bottom and top because | ||
| 132 | * assembling works bad for tall frames */ | ||
| 133 | |||
| 134 | 31 | unsigned char frame_width = self->frame_width; | |
| 135 | 31 | unsigned char frame_height = self->frame_height; | |
| 136 | 31 | unsigned char raw_height = self->raw_frame_height; | |
| 137 | 31 | unsigned char frame_margin = (raw_height - self->frame_height) / 2; | |
| 138 | 31 | int frame_idx, raw_idx; | |
| 139 | |||
| 140 |
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1581 | for (int y = 0; y < frame_height; y++) |
| 141 |
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224750 | for (int x = 0; x < frame_width; x++) |
| 142 | { | ||
| 143 |
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223200 | if (self->dev_type & ELAN_NOT_ROTATED) |
| 144 | ✗ | raw_idx = x + (y + frame_margin) * frame_width; | |
| 145 | else | ||
| 146 | 223200 | raw_idx = frame_margin + y + x * raw_height; | |
| 147 | 223200 | frame_idx = x + y * frame_width; | |
| 148 | 223200 | frame[frame_idx] = | |
| 149 | 223200 | ((unsigned short *) self->last_read)[raw_idx]; | |
| 150 | } | ||
| 151 | 31 | } | |
| 152 | |||
| 153 | static void | ||
| 154 | 3 | elan_save_background (FpiDeviceElan *elandev) | |
| 155 | { | ||
| 156 | 3 | G_DEBUG_HERE (); | |
| 157 | |||
| 158 | 3 | g_free (elandev->background); | |
| 159 | 6 | elandev->background = | |
| 160 | 3 | g_malloc (elandev->frame_width * elandev->frame_height * | |
| 161 | sizeof (short)); | ||
| 162 | 3 | elan_save_frame (elandev, elandev->background); | |
| 163 | 3 | } | |
| 164 | |||
| 165 | /* save a frame as part of the fingerprint image | ||
| 166 | * background needs to have been captured for this routine to work | ||
| 167 | * Elantech recommends 2-step non-linear normalization in order to reduce | ||
| 168 | * 2^14 ADC resolution to 2^8 image: | ||
| 169 | * | ||
| 170 | * 1. background is subtracted (done here) | ||
| 171 | * | ||
| 172 | * 2. pixels are grouped in 3 groups by intensity and each group is mapped | ||
| 173 | * separately onto the normalized frame (done in elan_process_frame_*) | ||
| 174 | * ==== 16383 ____> ======== 255 | ||
| 175 | * / | ||
| 176 | * ----- lvl3 __/ | ||
| 177 | * 35% pixels | ||
| 178 | * | ||
| 179 | * ----- lvl2 --------> ======== 156 | ||
| 180 | * | ||
| 181 | * 30% pixels | ||
| 182 | * ----- lvl1 --------> ======== 99 | ||
| 183 | * | ||
| 184 | * 35% pixels | ||
| 185 | * ----- lvl0 __ | ||
| 186 | * \ | ||
| 187 | * ======== 0 \____> ======== 0 | ||
| 188 | * | ||
| 189 | * For some devices we don't do 2. but instead do a simple linear mapping | ||
| 190 | * because it seems to produce better results (or at least as good): | ||
| 191 | * ==== 16383 ___> ======== 255 | ||
| 192 | * / | ||
| 193 | * ------ max __/ | ||
| 194 | * | ||
| 195 | * | ||
| 196 | * ------ min __ | ||
| 197 | * \ | ||
| 198 | * ======== 0 \___> ======== 0 | ||
| 199 | */ | ||
| 200 | static int | ||
| 201 | 28 | elan_save_img_frame (FpiDeviceElan *elandev) | |
| 202 | { | ||
| 203 | 28 | G_DEBUG_HERE (); | |
| 204 | |||
| 205 | 28 | unsigned int frame_size = elandev->frame_width * elandev->frame_height; | |
| 206 | 28 | unsigned short *frame = g_malloc (frame_size * sizeof (short)); | |
| 207 | |||
| 208 | 28 | elan_save_frame (elandev, frame); | |
| 209 | 28 | unsigned int sum = 0; | |
| 210 | |||
| 211 |
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201628 | for (int i = 0; i < frame_size; i++) |
| 212 | { | ||
| 213 |
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201600 | if (elandev->background[i] > frame[i]) |
| 214 | 3037 | frame[i] = 0; | |
| 215 | else | ||
| 216 | 198563 | frame[i] -= elandev->background[i]; | |
| 217 | 201600 | sum += frame[i]; | |
| 218 | } | ||
| 219 | |||
| 220 |
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28 | if (sum == 0) |
| 221 | { | ||
| 222 | ✗ | fp_dbg | |
| 223 | ("frame darker than background; finger present during calibration?"); | ||
| 224 | ✗ | g_free (frame); | |
| 225 | ✗ | return -1; | |
| 226 | } | ||
| 227 | |||
| 228 | 28 | elandev->frames = g_slist_prepend (elandev->frames, frame); | |
| 229 | 28 | elandev->num_frames += 1; | |
| 230 | 28 | return 0; | |
| 231 | } | ||
| 232 | |||
| 233 | static void | ||
| 234 | ✗ | elan_process_frame_linear (unsigned short *raw_frame, | |
| 235 | GSList ** frames) | ||
| 236 | { | ||
| 237 | ✗ | unsigned int frame_size = | |
| 238 | ✗ | assembling_ctx.frame_width * assembling_ctx.frame_height; | |
| 239 | ✗ | struct fpi_frame *frame = | |
| 240 | ✗ | g_malloc (frame_size + sizeof (struct fpi_frame)); | |
| 241 | |||
| 242 | ✗ | G_DEBUG_HERE (); | |
| 243 | |||
| 244 | ✗ | unsigned short min = 0xffff, max = 0; | |
| 245 | |||
| 246 | ✗ | for (int i = 0; i < frame_size; i++) | |
| 247 | { | ||
| 248 | ✗ | if (raw_frame[i] < min) | |
| 249 | min = raw_frame[i]; | ||
| 250 | ✗ | if (raw_frame[i] > max) | |
| 251 | max = raw_frame[i]; | ||
| 252 | } | ||
| 253 | |||
| 254 | ✗ | g_assert (max != min); | |
| 255 | |||
| 256 | unsigned short px; | ||
| 257 | |||
| 258 | ✗ | for (int i = 0; i < frame_size; i++) | |
| 259 | { | ||
| 260 | ✗ | px = raw_frame[i]; | |
| 261 | ✗ | px = (px - min) * 0xff / (max - min); | |
| 262 | ✗ | frame->data[i] = (unsigned char) px; | |
| 263 | } | ||
| 264 | |||
| 265 | ✗ | *frames = g_slist_prepend (*frames, frame); | |
| 266 | ✗ | } | |
| 267 | |||
| 268 | static void | ||
| 269 | 24 | elan_process_frame_thirds (unsigned short *raw_frame, | |
| 270 | GSList ** frames) | ||
| 271 | { | ||
| 272 | 24 | G_DEBUG_HERE (); | |
| 273 | |||
| 274 | 24 | unsigned int frame_size = | |
| 275 | 24 | assembling_ctx.frame_width * assembling_ctx.frame_height; | |
| 276 | 24 | struct fpi_frame *frame = | |
| 277 | 24 | g_malloc (frame_size + sizeof (struct fpi_frame)); | |
| 278 | |||
| 279 | 24 | unsigned short lvl0, lvl1, lvl2, lvl3; | |
| 280 | 24 | unsigned short *sorted = g_malloc (frame_size * sizeof (short)); | |
| 281 | |||
| 282 | 24 | memcpy (sorted, raw_frame, frame_size * sizeof (short)); | |
| 283 | 24 | qsort (sorted, frame_size, sizeof (short), cmp_short); | |
| 284 | 24 | lvl0 = sorted[0]; | |
| 285 | 24 | lvl1 = sorted[frame_size * 3 / 10]; | |
| 286 | 24 | lvl2 = sorted[frame_size * 65 / 100]; | |
| 287 | 24 | lvl3 = sorted[frame_size - 1]; | |
| 288 | 24 | g_free (sorted); | |
| 289 | |||
| 290 | 24 | unsigned short px; | |
| 291 | |||
| 292 |
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172824 | for (int i = 0; i < frame_size; i++) |
| 293 | { | ||
| 294 | 172800 | px = raw_frame[i]; | |
| 295 |
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172800 | if (lvl0 <= px && px < lvl1) |
| 296 | 51794 | px = (px - lvl0) * 99 / (lvl1 - lvl0); | |
| 297 |
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121006 | else if (lvl1 <= px && px < lvl2) |
| 298 | 60488 | px = 99 + ((px - lvl1) * 56 / (lvl2 - lvl1)); | |
| 299 | else // (lvl2 <= px && px <= lvl3) | ||
| 300 | 60518 | px = 155 + ((px - lvl2) * 100 / (lvl3 - lvl2)); | |
| 301 | 172800 | frame->data[i] = (unsigned char) px; | |
| 302 | } | ||
| 303 | |||
| 304 | 24 | *frames = g_slist_prepend (*frames, frame); | |
| 305 | 24 | } | |
| 306 | |||
| 307 | static void | ||
| 308 | 2 | elan_submit_image (FpImageDevice *dev) | |
| 309 | { | ||
| 310 | 2 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 311 | 2 | GSList *raw_frames; | |
| 312 | 2 | GSList *frames = NULL; | |
| 313 | 2 | FpImage *img; | |
| 314 | |||
| 315 | 2 | G_DEBUG_HERE (); | |
| 316 | |||
| 317 | 2 | raw_frames = g_slist_nth (self->frames, ELAN_SKIP_LAST_FRAMES); | |
| 318 | |||
| 319 | 2 | assembling_ctx.frame_width = self->frame_width; | |
| 320 | 2 | assembling_ctx.frame_height = self->frame_height; | |
| 321 | 2 | assembling_ctx.image_width = self->frame_width * 3 / 2; | |
| 322 | 2 | g_slist_foreach (raw_frames, (GFunc) self->process_frame, &frames); | |
| 323 | 2 | fpi_do_movement_estimation (&assembling_ctx, frames); | |
| 324 | 2 | img = fpi_assemble_frames (&assembling_ctx, frames); | |
| 325 | 2 | img->flags |= FPI_IMAGE_PARTIAL; | |
| 326 | |||
| 327 | 2 | g_slist_free_full (frames, g_free); | |
| 328 | |||
| 329 | 2 | fpi_image_device_image_captured (dev, img); | |
| 330 | 2 | } | |
| 331 | |||
| 332 | static void | ||
| 333 | 80 | elan_cmd_done (FpiSsm *ssm) | |
| 334 | { | ||
| 335 | 80 | G_DEBUG_HERE (); | |
| 336 | 80 | fpi_ssm_next_state (ssm); | |
| 337 | 80 | } | |
| 338 | |||
| 339 | static void | ||
| 340 | 152 | elan_cmd_cb (FpiUsbTransfer *transfer, FpDevice *dev, | |
| 341 | gpointer user_data, GError *error) | ||
| 342 | { | ||
| 343 | 152 | FpiSsm *ssm = transfer->ssm; | |
| 344 | 152 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 345 | |||
| 346 | 152 | G_DEBUG_HERE (); | |
| 347 | |||
| 348 |
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152 | if (error) |
| 349 | { | ||
| 350 | /* XXX: In the cancellation case we used to not | ||
| 351 | * mark the SSM as failed?! */ | ||
| 352 | ✗ | fpi_ssm_mark_failed (transfer->ssm, error); | |
| 353 | ✗ | return; | |
| 354 | } | ||
| 355 | |||
| 356 | /* XXX: We used to reset the device in error cases! */ | ||
| 357 |
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152 | if (transfer->endpoint & FPI_USB_ENDPOINT_IN) |
| 358 | { | ||
| 359 | /* just finished receiving */ | ||
| 360 | 74 | self->last_read = g_memdup2 (transfer->buffer, transfer->actual_length); | |
| 361 | 74 | elan_cmd_done (ssm); | |
| 362 | } | ||
| 363 | else | ||
| 364 | { | ||
| 365 | /* just finished sending */ | ||
| 366 | 78 | G_DEBUG_HERE (); | |
| 367 | 78 | elan_cmd_read (ssm, dev); | |
| 368 | } | ||
| 369 | } | ||
| 370 | |||
| 371 | static void | ||
| 372 | 78 | elan_cmd_read (FpiSsm *ssm, FpDevice *dev) | |
| 373 | { | ||
| 374 | 78 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 375 | 78 | FpiUsbTransfer *transfer; | |
| 376 | 78 | GCancellable *cancellable = NULL; | |
| 377 | 78 | int response_len = self->cmd->response_len; | |
| 378 | |||
| 379 | 78 | G_DEBUG_HERE (); | |
| 380 | |||
| 381 |
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78 | if (self->cmd->response_len == ELAN_CMD_SKIP_READ) |
| 382 | { | ||
| 383 | 4 | fp_dbg ("skipping read, not expecting anything"); | |
| 384 | 4 | elan_cmd_done (ssm); | |
| 385 | 4 | return; | |
| 386 | } | ||
| 387 | |||
| 388 |
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74 | if (self->dev_type == ELAN_0C42) |
| 389 | { | ||
| 390 | /* ELAN_0C42 sends an extra byte in one byte responses */ | ||
| 391 | ✗ | if (self->cmd->response_len == 1) | |
| 392 | 74 | response_len = 2; | |
| 393 | } | ||
| 394 | |||
| 395 |
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74 | if (self->cmd->cmd == get_image_cmd.cmd) |
| 396 | /* raw data has 2-byte "pixels" and the frame is vertical */ | ||
| 397 | 31 | response_len = | |
| 398 | 31 | self->raw_frame_height * self->frame_width * 2; | |
| 399 | |||
| 400 |
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74 | g_clear_pointer (&self->last_read, g_free); |
| 401 | |||
| 402 | 74 | transfer = fpi_usb_transfer_new (dev); | |
| 403 | 74 | transfer->ssm = ssm; | |
| 404 | 74 | transfer->short_is_error = TRUE; | |
| 405 | |||
| 406 | 74 | fpi_usb_transfer_fill_bulk (transfer, | |
| 407 | 74 | self->cmd->response_in, | |
| 408 | response_len); | ||
| 409 | |||
| 410 |
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74 | if (!self->cmd->never_cancel) |
| 411 | 74 | cancellable = fpi_device_get_cancellable (dev); | |
| 412 | |||
| 413 | 74 | fpi_usb_transfer_submit (transfer, self->cmd_timeout, cancellable, elan_cmd_cb, NULL); | |
| 414 | } | ||
| 415 | |||
| 416 | static void | ||
| 417 | 80 | elan_run_cmd (FpiSsm *ssm, | |
| 418 | FpDevice *dev, | ||
| 419 | const struct elan_cmd *cmd, | ||
| 420 | int cmd_timeout) | ||
| 421 | { | ||
| 422 | 80 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 423 | 80 | FpiUsbTransfer *transfer; | |
| 424 | 80 | GCancellable *cancellable = NULL; | |
| 425 | |||
| 426 | 80 | self->cmd = cmd; | |
| 427 |
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80 | if (cmd_timeout != -1) |
| 428 | 50 | self->cmd_timeout = cmd_timeout; | |
| 429 | |||
| 430 |
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80 | if (cmd->devices != ELAN_ALL_DEV && !(cmd->devices & self->dev_type)) |
| 431 | { | ||
| 432 | 2 | fp_dbg ("skipping command 0x%x 0x%x for this device (for devices 0x%x but device is 0x%x)", | |
| 433 | cmd->cmd[0], cmd->cmd[1], cmd->devices, self->dev_type); | ||
| 434 | 2 | elan_cmd_done (ssm); | |
| 435 | 2 | return; | |
| 436 | } | ||
| 437 | |||
| 438 | 78 | transfer = fpi_usb_transfer_new (dev); | |
| 439 | 78 | transfer->ssm = ssm; | |
| 440 | 78 | transfer->short_is_error = TRUE; | |
| 441 | |||
| 442 | 78 | fpi_usb_transfer_fill_bulk_full (transfer, | |
| 443 | ELAN_EP_CMD_OUT, | ||
| 444 | 78 | (guint8 *) cmd->cmd, | |
| 445 | ELAN_CMD_LEN, | ||
| 446 | NULL); | ||
| 447 | |||
| 448 |
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78 | if (!self->cmd->never_cancel) |
| 449 | 76 | cancellable = fpi_device_get_cancellable (dev); | |
| 450 | |||
| 451 | 78 | fpi_usb_transfer_submit (transfer, | |
| 452 | 78 | self->cmd_timeout, | |
| 453 | cancellable, | ||
| 454 | elan_cmd_cb, | ||
| 455 | NULL); | ||
| 456 | } | ||
| 457 | |||
| 458 | enum stop_capture_states { | ||
| 459 | STOP_CAPTURE, | ||
| 460 | STOP_CAPTURE_NUM_STATES, | ||
| 461 | }; | ||
| 462 | |||
| 463 | static void | ||
| 464 | 2 | stop_capture_run_state (FpiSsm *ssm, FpDevice *dev) | |
| 465 | { | ||
| 466 | 2 | G_DEBUG_HERE (); | |
| 467 | |||
| 468 |
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2 | switch (fpi_ssm_get_cur_state (ssm)) |
| 469 | { | ||
| 470 | 2 | case STOP_CAPTURE: | |
| 471 | 2 | elan_run_cmd (ssm, dev, &stop_cmd, | |
| 472 | ELAN_CMD_TIMEOUT); | ||
| 473 | 2 | break; | |
| 474 | } | ||
| 475 | 2 | } | |
| 476 | |||
| 477 | static void | ||
| 478 | 2 | stop_capture_complete (FpiSsm *ssm, FpDevice *_dev, GError *error) | |
| 479 | { | ||
| 480 | 2 | FpImageDevice *dev = FP_IMAGE_DEVICE (_dev); | |
| 481 | 2 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 482 | |||
| 483 | 2 | G_DEBUG_HERE (); | |
| 484 | |||
| 485 | |||
| 486 | /* The device is inactive at this point. */ | ||
| 487 | 2 | self->active = FALSE; | |
| 488 | |||
| 489 |
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2 | if (self->deactivating) |
| 490 | { | ||
| 491 | /* Simply complete the pending deactivation. */ | ||
| 492 | ✗ | self->deactivating = FALSE; | |
| 493 | ✗ | fpi_image_device_deactivate_complete (dev, error); | |
| 494 | ✗ | return; | |
| 495 | } | ||
| 496 | |||
| 497 |
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2 | if (!error) |
| 498 | 2 | fpi_image_device_report_finger_status (dev, FALSE); | |
| 499 | else | ||
| 500 | /* NOTE: We cannot get a cancellation error here. */ | ||
| 501 | ✗ | fpi_image_device_session_error (dev, error); | |
| 502 | } | ||
| 503 | |||
| 504 | static void | ||
| 505 | 2 | elan_stop_capture (FpiDeviceElan *self) | |
| 506 | { | ||
| 507 | 2 | G_DEBUG_HERE (); | |
| 508 | |||
| 509 | 2 | elan_dev_reset_state (self); | |
| 510 | |||
| 511 | 2 | FpiSsm *ssm = | |
| 512 | 2 | fpi_ssm_new (FP_DEVICE (self), stop_capture_run_state, STOP_CAPTURE_NUM_STATES); | |
| 513 | |||
| 514 | 2 | fpi_ssm_start (ssm, stop_capture_complete); | |
| 515 | 2 | } | |
| 516 | |||
| 517 | enum capture_states { | ||
| 518 | CAPTURE_LED_ON, | ||
| 519 | CAPTURE_WAIT_FINGER, | ||
| 520 | CAPTURE_READ_DATA, | ||
| 521 | CAPTURE_CHECK_ENOUGH_FRAMES, | ||
| 522 | CAPTURE_NUM_STATES, | ||
| 523 | }; | ||
| 524 | |||
| 525 | static void | ||
| 526 | 90 | capture_run_state (FpiSsm *ssm, FpDevice *dev) | |
| 527 | { | ||
| 528 | 90 | FpImageDevice *idev = FP_IMAGE_DEVICE (dev); | |
| 529 | 90 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 530 | 90 | int r; | |
| 531 | |||
| 532 |
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90 | switch (fpi_ssm_get_cur_state (ssm)) |
| 533 | { | ||
| 534 | 2 | case CAPTURE_LED_ON: | |
| 535 | 2 | elan_run_cmd (ssm, dev, &led_on_cmd, ELAN_CMD_TIMEOUT); | |
| 536 | 2 | break; | |
| 537 | |||
| 538 | 30 | case CAPTURE_WAIT_FINGER: | |
| 539 | 30 | elan_run_cmd (ssm, dev, &pre_scan_cmd, -1); | |
| 540 | 30 | break; | |
| 541 | |||
| 542 | 30 | case CAPTURE_READ_DATA: | |
| 543 | /* 0x55 - finger present | ||
| 544 | * 0xff - device not calibrated (probably) */ | ||
| 545 |
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30 | if (self->last_read && self->last_read[0] == 0x55) |
| 546 | { | ||
| 547 | 28 | fpi_image_device_report_finger_status (idev, TRUE); | |
| 548 | 28 | elan_run_cmd (ssm, dev, &get_image_cmd, ELAN_CMD_TIMEOUT); | |
| 549 | } | ||
| 550 | else | ||
| 551 | { | ||
| 552 | /* XXX: The timeout is emulated incorrectly, resulting in a zero byte read. */ | ||
| 553 |
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2 | if (g_strcmp0 (g_getenv ("FP_DEVICE_EMULATION"), "1") == 0) |
| 554 | 2 | fpi_ssm_mark_completed (ssm); | |
| 555 | else | ||
| 556 | ✗ | fpi_ssm_mark_failed (ssm, fpi_device_error_new (FP_DEVICE_ERROR_PROTO)); | |
| 557 | } | ||
| 558 | break; | ||
| 559 | |||
| 560 | 28 | case CAPTURE_CHECK_ENOUGH_FRAMES: | |
| 561 | 28 | r = elan_save_img_frame (self); | |
| 562 |
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28 | if (r < 0) |
| 563 | { | ||
| 564 | ✗ | fpi_ssm_mark_failed (ssm, fpi_device_error_new (FP_DEVICE_ERROR_GENERAL)); | |
| 565 | } | ||
| 566 |
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28 | else if (self->num_frames < ELAN_MAX_FRAMES) |
| 567 | { | ||
| 568 | /* quickly stop if finger is removed */ | ||
| 569 | 28 | self->cmd_timeout = ELAN_FINGER_TIMEOUT; | |
| 570 | 28 | fpi_ssm_jump_to_state (ssm, CAPTURE_WAIT_FINGER); | |
| 571 | } | ||
| 572 | else | ||
| 573 | { | ||
| 574 | ✗ | fpi_ssm_next_state (ssm); | |
| 575 | } | ||
| 576 | break; | ||
| 577 | } | ||
| 578 | 90 | } | |
| 579 | |||
| 580 | static void | ||
| 581 | 2 | capture_complete (FpiSsm *ssm, FpDevice *_dev, GError *error) | |
| 582 | { | ||
| 583 | 2 | FpImageDevice *dev = FP_IMAGE_DEVICE (_dev); | |
| 584 | 2 | FpiDeviceElan *self = FPI_DEVICE_ELAN (_dev); | |
| 585 | |||
| 586 | 2 | G_DEBUG_HERE (); | |
| 587 | |||
| 588 | /* either max frames captured or timed out waiting for the next frame */ | ||
| 589 |
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2 | if (!error || |
| 590 | ✗ | (g_error_matches (error, G_USB_DEVICE_ERROR, G_USB_DEVICE_ERROR_TIMED_OUT) && | |
| 591 | ✗ | fpi_ssm_get_cur_state (ssm) == CAPTURE_WAIT_FINGER)) | |
| 592 | { | ||
| 593 |
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2 | if (self->num_frames >= ELAN_MIN_FRAMES) |
| 594 | { | ||
| 595 | 2 | elan_submit_image (dev); | |
| 596 | } | ||
| 597 | else | ||
| 598 | { | ||
| 599 | ✗ | fp_dbg ("swipe too short: want >= %d frames, got %d", | |
| 600 | ELAN_MIN_FRAMES, self->num_frames); | ||
| 601 | ✗ | fpi_image_device_retry_scan (dev, FP_DEVICE_RETRY_TOO_SHORT); | |
| 602 | } | ||
| 603 | 2 | g_clear_error (&error); | |
| 604 | } | ||
| 605 | else | ||
| 606 | { | ||
| 607 | ✗ | fpi_image_device_session_error (dev, error); | |
| 608 | } | ||
| 609 | |||
| 610 | /* Note: We always stop capturing even if that may not be needed always. | ||
| 611 | * Doing this between captures appears to make it at least less likely for | ||
| 612 | * devices to end up in a bad state. | ||
| 613 | */ | ||
| 614 | 2 | elan_stop_capture (self); | |
| 615 | 2 | } | |
| 616 | |||
| 617 | static void | ||
| 618 | 2 | elan_capture (FpiDeviceElan *self) | |
| 619 | { | ||
| 620 | 2 | G_DEBUG_HERE (); | |
| 621 | |||
| 622 | 2 | elan_dev_reset_state (self); | |
| 623 | 2 | FpiSsm *ssm = | |
| 624 | 2 | fpi_ssm_new (FP_DEVICE (self), capture_run_state, CAPTURE_NUM_STATES); | |
| 625 | |||
| 626 | 2 | fpi_ssm_start (ssm, capture_complete); | |
| 627 | 2 | } | |
| 628 | |||
| 629 | /* this function needs to have elandev->background and elandev->last_read to be | ||
| 630 | * the calibration mean */ | ||
| 631 | static int | ||
| 632 | 3 | elan_need_calibration (FpiDeviceElan *elandev) | |
| 633 | { | ||
| 634 | 3 | G_DEBUG_HERE (); | |
| 635 | |||
| 636 | 3 | unsigned short calib_mean = | |
| 637 | 3 | elandev->last_read[0] * 0xff + elandev->last_read[1]; | |
| 638 | 3 | unsigned int bg_mean = 0, delta; | |
| 639 | 3 | unsigned int frame_size = elandev->frame_width * elandev->frame_height; | |
| 640 | |||
| 641 |
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3 | g_assert (frame_size != 0); |
| 642 | |||
| 643 |
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3 | if (elandev->dev_type == ELAN_0C42) |
| 644 | { | ||
| 645 | ✗ | if (calib_mean > 5500 || | |
| 646 | calib_mean < 2500) | ||
| 647 | { | ||
| 648 | ✗ | fp_dbg ("Forcing needed recalibration"); | |
| 649 | ✗ | return 1; | |
| 650 | } | ||
| 651 | } | ||
| 652 | |||
| 653 |
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21603 | for (int i = 0; i < frame_size; i++) |
| 654 | 21600 | bg_mean += elandev->background[i]; | |
| 655 | 3 | bg_mean /= frame_size; | |
| 656 | |||
| 657 | 6 | delta = | |
| 658 |
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3 | bg_mean > calib_mean ? bg_mean - calib_mean : calib_mean - bg_mean; |
| 659 | |||
| 660 | 3 | fp_dbg ("calibration mean: %d, bg mean: %d, delta: %d", calib_mean, | |
| 661 | bg_mean, delta); | ||
| 662 | |||
| 663 | 3 | return delta > ELAN_CALIBRATION_MAX_DELTA ? 1 : 0; | |
| 664 | } | ||
| 665 | |||
| 666 | enum calibrate_states { | ||
| 667 | CALIBRATE_GET_BACKGROUND, | ||
| 668 | CALIBRATE_SAVE_BACKGROUND, | ||
| 669 | CALIBRATE_GET_MEAN, | ||
| 670 | CALIBRATE_CHECK_NEEDED, | ||
| 671 | CALIBRATE_GET_STATUS, | ||
| 672 | CALIBRATE_CHECK_STATUS, | ||
| 673 | CALIBRATE_REPEAT_STATUS, | ||
| 674 | CALIBRATE_NUM_STATES, | ||
| 675 | }; | ||
| 676 | |||
| 677 | static gboolean | ||
| 678 | 3 | elan_supports_calibration (FpiDeviceElan *elandev) | |
| 679 | { | ||
| 680 | 3 | if (elandev->dev_type == ELAN_0C42) | |
| 681 | return TRUE; | ||
| 682 | |||
| 683 | 3 | return elandev->fw_ver >= ELAN_MIN_CALIBRATION_FW; | |
| 684 | } | ||
| 685 | |||
| 686 | static void | ||
| 687 | 29 | calibrate_run_state (FpiSsm *ssm, FpDevice *dev) | |
| 688 | { | ||
| 689 | 29 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 690 | |||
| 691 | 29 | G_DEBUG_HERE (); | |
| 692 | |||
| 693 |
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29 | switch (fpi_ssm_get_cur_state (ssm)) |
| 694 | { | ||
| 695 | 3 | case CALIBRATE_GET_BACKGROUND: | |
| 696 | 3 | elan_run_cmd (ssm, dev, &get_image_cmd, ELAN_CMD_TIMEOUT); | |
| 697 | 3 | break; | |
| 698 | |||
| 699 | 3 | case CALIBRATE_SAVE_BACKGROUND: | |
| 700 | 3 | elan_save_background (self); | |
| 701 |
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3 | if (!elan_supports_calibration (self)) |
| 702 | { | ||
| 703 | ✗ | fp_dbg ("FW does not support calibration"); | |
| 704 | ✗ | fpi_ssm_mark_completed (ssm); | |
| 705 | } | ||
| 706 | else | ||
| 707 | { | ||
| 708 | 3 | fpi_ssm_next_state (ssm); | |
| 709 | } | ||
| 710 | break; | ||
| 711 | |||
| 712 | 3 | case CALIBRATE_GET_MEAN: | |
| 713 | 3 | elan_run_cmd (ssm, dev, &get_calib_mean_cmd, ELAN_CMD_TIMEOUT); | |
| 714 | 3 | break; | |
| 715 | |||
| 716 | 3 | case CALIBRATE_CHECK_NEEDED: | |
| 717 |
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3 | if (elan_need_calibration (self)) |
| 718 | { | ||
| 719 | 1 | self->calib_status = 0; | |
| 720 | 1 | fpi_ssm_next_state (ssm); | |
| 721 | } | ||
| 722 | else | ||
| 723 | { | ||
| 724 | 2 | fpi_ssm_mark_completed (ssm); | |
| 725 | } | ||
| 726 | break; | ||
| 727 | |||
| 728 | 6 | case CALIBRATE_GET_STATUS: | |
| 729 | 6 | self->calib_atts_left -= 1; | |
| 730 |
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6 | if (self->calib_atts_left) |
| 731 | { | ||
| 732 | 6 | elan_run_cmd (ssm, dev, &get_calib_status_cmd, | |
| 733 | ELAN_CMD_TIMEOUT); | ||
| 734 | } | ||
| 735 | else | ||
| 736 | { | ||
| 737 | ✗ | fp_dbg ("calibration failed"); | |
| 738 | ✗ | fpi_ssm_mark_failed (ssm, | |
| 739 | fpi_device_error_new_msg (FP_DEVICE_ERROR_GENERAL, | ||
| 740 | "Calibration failed!")); | ||
| 741 | } | ||
| 742 | break; | ||
| 743 | |||
| 744 | 6 | case CALIBRATE_CHECK_STATUS: | |
| 745 | /* 0x01 - retry, 0x03 - ok | ||
| 746 | * It appears that when reading the response soon after 0x4023 the device | ||
| 747 | * can return 0x03, and only after some time (up to 100 ms) the response | ||
| 748 | * changes to 0x01. It stays that way for some time and then changes back | ||
| 749 | * to 0x03. Because of this we don't just expect 0x03, we want to see 0x01 | ||
| 750 | * first. This is to make sure that a full calibration loop has completed */ | ||
| 751 | 6 | fp_dbg ("calibration status: 0x%02x", self->last_read[0]); | |
| 752 |
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6 | if (self->calib_status == 0x01 && |
| 753 |
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5 | self->last_read[0] == 0x03) |
| 754 | { | ||
| 755 | 1 | self->calib_status = 0x03; | |
| 756 | 1 | fpi_ssm_jump_to_state (ssm, CALIBRATE_GET_BACKGROUND); | |
| 757 | } | ||
| 758 | else | ||
| 759 | { | ||
| 760 |
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5 | if (self->calib_status == 0x00 && |
| 761 |
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1 | self->last_read[0] == 0x01) |
| 762 | 1 | self->calib_status = 0x01; | |
| 763 | 5 | fpi_ssm_next_state_delayed (ssm, 50); | |
| 764 | } | ||
| 765 | break; | ||
| 766 | |||
| 767 | 5 | case CALIBRATE_REPEAT_STATUS: | |
| 768 | 5 | fpi_ssm_jump_to_state (ssm, CALIBRATE_GET_STATUS); | |
| 769 | 5 | break; | |
| 770 | } | ||
| 771 | 29 | } | |
| 772 | |||
| 773 | static void | ||
| 774 | 2 | calibrate_complete (FpiSsm *ssm, FpDevice *dev, GError *error) | |
| 775 | { | ||
| 776 | 2 | G_DEBUG_HERE (); | |
| 777 | |||
| 778 |
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2 | if (error) |
| 779 | { | ||
| 780 | ✗ | fpi_image_device_session_error (FP_IMAGE_DEVICE (dev), error); | |
| 781 | ✗ | elan_stop_capture (FPI_DEVICE_ELAN (dev)); | |
| 782 | } | ||
| 783 | else | ||
| 784 | { | ||
| 785 | 2 | elan_capture (FPI_DEVICE_ELAN (dev)); | |
| 786 | } | ||
| 787 | 2 | } | |
| 788 | |||
| 789 | static void | ||
| 790 | 2 | elan_calibrate (FpiDeviceElan *self) | |
| 791 | { | ||
| 792 | 2 | G_DEBUG_HERE (); | |
| 793 | |||
| 794 | 2 | elan_dev_reset_state (self); | |
| 795 | |||
| 796 |
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2 | g_return_if_fail (!self->active); |
| 797 | 2 | self->active = TRUE; | |
| 798 | 2 | self->calib_atts_left = ELAN_CALIBRATION_ATTEMPTS; | |
| 799 | |||
| 800 | 2 | FpiSsm *ssm = fpi_ssm_new (FP_DEVICE (self), calibrate_run_state, | |
| 801 | CALIBRATE_NUM_STATES); | ||
| 802 | |||
| 803 | 2 | fpi_ssm_start (ssm, calibrate_complete); | |
| 804 | } | ||
| 805 | |||
| 806 | enum activate_states { | ||
| 807 | ACTIVATE_GET_FW_VER, | ||
| 808 | ACTIVATE_SET_FW_VER, | ||
| 809 | ACTIVATE_GET_SENSOR_DIM, | ||
| 810 | ACTIVATE_SET_SENSOR_DIM, | ||
| 811 | ACTIVATE_CMD_1, | ||
| 812 | ACTIVATE_NUM_STATES, | ||
| 813 | }; | ||
| 814 | |||
| 815 | static void | ||
| 816 | 10 | activate_run_state (FpiSsm *ssm, FpDevice *dev) | |
| 817 | { | ||
| 818 | 10 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 819 | |||
| 820 | 10 | G_DEBUG_HERE (); | |
| 821 | |||
| 822 |
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10 | switch (fpi_ssm_get_cur_state (ssm)) |
| 823 | { | ||
| 824 | 2 | case ACTIVATE_GET_FW_VER: | |
| 825 | 2 | elan_run_cmd (ssm, dev, &get_fw_ver_cmd, ELAN_CMD_TIMEOUT); | |
| 826 | 2 | break; | |
| 827 | |||
| 828 | 2 | case ACTIVATE_SET_FW_VER: | |
| 829 | 2 | self->fw_ver = | |
| 830 | 2 | (self->last_read[0] << 8 | self->last_read[1]); | |
| 831 | 2 | fp_dbg ("FW ver 0x%04hx", self->fw_ver); | |
| 832 | 2 | fpi_ssm_next_state (ssm); | |
| 833 | 2 | break; | |
| 834 | |||
| 835 | 2 | case ACTIVATE_GET_SENSOR_DIM: | |
| 836 | 2 | elan_run_cmd (ssm, dev, &get_sensor_dim_cmd, ELAN_CMD_TIMEOUT); | |
| 837 | 2 | break; | |
| 838 | |||
| 839 | 2 | case ACTIVATE_SET_SENSOR_DIM: | |
| 840 | /* see elan_save_frame for details */ | ||
| 841 |
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2 | if (self->dev_type & ELAN_NOT_ROTATED) |
| 842 | { | ||
| 843 | ✗ | self->frame_width = self->last_read[0]; | |
| 844 | ✗ | self->frame_height = self->raw_frame_height = | |
| 845 | self->last_read[2]; | ||
| 846 | } | ||
| 847 | else | ||
| 848 | { | ||
| 849 | 2 | self->frame_width = self->last_read[2]; | |
| 850 | 2 | self->frame_height = self->raw_frame_height = | |
| 851 | 2 | self->last_read[0]; | |
| 852 | } | ||
| 853 | /* Work-around sensors returning the sizes as zero-based index | ||
| 854 | * rather than the number of pixels. */ | ||
| 855 |
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2 | if ((self->frame_width % 2 == 1) && |
| 856 | (self->frame_height % 2 == 1)) | ||
| 857 | { | ||
| 858 | ✗ | self->frame_width++; | |
| 859 | ✗ | self->frame_height++; | |
| 860 | ✗ | self->raw_frame_height = self->frame_height; | |
| 861 | } | ||
| 862 |
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2 | if (self->frame_height > ELAN_MAX_FRAME_HEIGHT) |
| 863 | 2 | self->frame_height = ELAN_MAX_FRAME_HEIGHT; | |
| 864 | 2 | fp_dbg ("sensor dimensions, WxH: %dx%d", self->frame_width, | |
| 865 | self->raw_frame_height); | ||
| 866 | 2 | fpi_ssm_next_state (ssm); | |
| 867 | 2 | break; | |
| 868 | |||
| 869 | 2 | case ACTIVATE_CMD_1: | |
| 870 | /* TODO: find out what this does, if we need it */ | ||
| 871 | 2 | elan_run_cmd (ssm, dev, &activate_cmd_1, ELAN_CMD_TIMEOUT); | |
| 872 | 2 | break; | |
| 873 | } | ||
| 874 | 10 | } | |
| 875 | |||
| 876 | static void | ||
| 877 | 2 | activate_complete (FpiSsm *ssm, FpDevice *dev, GError *error) | |
| 878 | { | ||
| 879 | 2 | FpImageDevice *idev = FP_IMAGE_DEVICE (dev); | |
| 880 | |||
| 881 | 2 | G_DEBUG_HERE (); | |
| 882 | |||
| 883 | 2 | fpi_image_device_activate_complete (idev, error); | |
| 884 | |||
| 885 | 2 | } | |
| 886 | |||
| 887 | static void | ||
| 888 | 2 | elan_activate (FpImageDevice *dev) | |
| 889 | { | ||
| 890 | 2 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 891 | |||
| 892 | 2 | G_DEBUG_HERE (); | |
| 893 | 2 | elan_dev_reset_state (self); | |
| 894 | |||
| 895 | 2 | FpiSsm *ssm = | |
| 896 | 2 | fpi_ssm_new (FP_DEVICE (dev), activate_run_state, | |
| 897 | ACTIVATE_NUM_STATES); | ||
| 898 | |||
| 899 | 2 | fpi_ssm_start (ssm, activate_complete); | |
| 900 | 2 | } | |
| 901 | |||
| 902 | static void | ||
| 903 | 2 | dev_init (FpImageDevice *dev) | |
| 904 | { | ||
| 905 | 2 | GError *error = NULL; | |
| 906 | 2 | FpiDeviceElan *self; | |
| 907 | |||
| 908 | 2 | G_DEBUG_HERE (); | |
| 909 | |||
| 910 |
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2 | if (!g_usb_device_claim_interface (fpi_device_get_usb_device (FP_DEVICE (dev)), 0, 0, &error)) |
| 911 | { | ||
| 912 | ✗ | fpi_image_device_open_complete (dev, error); | |
| 913 | ✗ | return; | |
| 914 | } | ||
| 915 | |||
| 916 | 2 | self = FPI_DEVICE_ELAN (dev); | |
| 917 | |||
| 918 | /* common params */ | ||
| 919 | 2 | self->dev_type = fpi_device_get_driver_data (FP_DEVICE (dev)); | |
| 920 | 2 | self->background = NULL; | |
| 921 | 2 | self->process_frame = elan_process_frame_thirds; | |
| 922 | |||
| 923 |
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2 | switch (self->dev_type) |
| 924 | { | ||
| 925 | ✗ | case ELAN_0907: | |
| 926 | ✗ | self->process_frame = elan_process_frame_linear; | |
| 927 | ✗ | break; | |
| 928 | } | ||
| 929 | |||
| 930 | 2 | fpi_image_device_open_complete (dev, NULL); | |
| 931 | } | ||
| 932 | |||
| 933 | static void | ||
| 934 | 2 | dev_deinit (FpImageDevice *dev) | |
| 935 | { | ||
| 936 | 2 | GError *error = NULL; | |
| 937 | 2 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 938 | |||
| 939 | 2 | G_DEBUG_HERE (); | |
| 940 | |||
| 941 | 2 | elan_dev_reset_state (self); | |
| 942 | 2 | g_free (self->background); | |
| 943 | 2 | g_usb_device_release_interface (fpi_device_get_usb_device (FP_DEVICE (dev)), | |
| 944 | 0, 0, &error); | ||
| 945 | 2 | fpi_image_device_close_complete (dev, error); | |
| 946 | 2 | } | |
| 947 | |||
| 948 | static void | ||
| 949 | 2 | dev_activate (FpImageDevice *dev) | |
| 950 | { | ||
| 951 | 2 | G_DEBUG_HERE (); | |
| 952 | 2 | elan_activate (dev); | |
| 953 | 2 | } | |
| 954 | |||
| 955 | static void | ||
| 956 | 16 | dev_change_state (FpImageDevice *dev, FpiImageDeviceState state) | |
| 957 | { | ||
| 958 | 16 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 959 | |||
| 960 | 16 | G_DEBUG_HERE (); | |
| 961 | |||
| 962 | /* Note: We always calibrate even if that may not be needed always. | ||
| 963 | * Doing this for each capture appears to make it at least less likely for | ||
| 964 | * devices to end up in a bad state. | ||
| 965 | */ | ||
| 966 |
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16 | if (state == FPI_IMAGE_DEVICE_STATE_AWAIT_FINGER_ON) |
| 967 | 2 | elan_calibrate (self); | |
| 968 | 16 | } | |
| 969 | |||
| 970 | static void | ||
| 971 | 2 | dev_deactivate (FpImageDevice *dev) | |
| 972 | { | ||
| 973 | 2 | FpiDeviceElan *self = FPI_DEVICE_ELAN (dev); | |
| 974 | |||
| 975 | 2 | G_DEBUG_HERE (); | |
| 976 | |||
| 977 |
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2 | if (!self->active) |
| 978 | /* The device is inactive already, complete the operation immediately. */ | ||
| 979 | 2 | fpi_image_device_deactivate_complete (dev, NULL); | |
| 980 | else | ||
| 981 | /* The device is not yet inactive, flag that we are deactivating (and | ||
| 982 | * need to signal back deactivation). | ||
| 983 | * Note that any running capture will be cancelled already if needed. */ | ||
| 984 | ✗ | self->deactivating = TRUE; | |
| 985 | 2 | } | |
| 986 | |||
| 987 | static void | ||
| 988 | 2 | fpi_device_elan_init (FpiDeviceElan *self) | |
| 989 | { | ||
| 990 | 2 | } | |
| 991 | static void | ||
| 992 | 121 | fpi_device_elan_class_init (FpiDeviceElanClass *klass) | |
| 993 | { | ||
| 994 | 121 | FpDeviceClass *dev_class = FP_DEVICE_CLASS (klass); | |
| 995 | 121 | FpImageDeviceClass *img_class = FP_IMAGE_DEVICE_CLASS (klass); | |
| 996 | |||
| 997 | 121 | dev_class->id = "elan"; | |
| 998 | 121 | dev_class->full_name = "ElanTech Fingerprint Sensor"; | |
| 999 | 121 | dev_class->type = FP_DEVICE_TYPE_USB; | |
| 1000 | 121 | dev_class->id_table = elan_id_table; | |
| 1001 | 121 | dev_class->scan_type = FP_SCAN_TYPE_SWIPE; | |
| 1002 | |||
| 1003 | 121 | img_class->img_open = dev_init; | |
| 1004 | 121 | img_class->img_close = dev_deinit; | |
| 1005 | 121 | img_class->activate = dev_activate; | |
| 1006 | 121 | img_class->deactivate = dev_deactivate; | |
| 1007 | 121 | img_class->change_state = dev_change_state; | |
| 1008 | |||
| 1009 | 121 | img_class->bz3_threshold = 24; | |
| 1010 | } | ||
| 1011 |