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-rw-r--r--libsensors/orientation.c445
1 files changed, 0 insertions, 445 deletions
diff --git a/libsensors/orientation.c b/libsensors/orientation.c
deleted file mode 100644
index 954c2b9..0000000
--- a/libsensors/orientation.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
- * Copyright (C) 2013 Paul Kocialkowski
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stddef.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <math.h>
-#include <linux/ioctl.h>
-#include <linux/uinput.h>
-#include <linux/input.h>
-
-#include <hardware/sensors.h>
-#include <hardware/hardware.h>
-
-#define LOG_TAG "exynos_sensors"
-#include <utils/Log.h>
-
-#include "exynos_sensors.h"
-
-struct orientation_data {
- struct exynos_sensors_handlers *acceleration_sensor;
- struct exynos_sensors_handlers *magnetic_sensor;
-
- sensors_vec_t orientation;
- sensors_vec_t acceleration;
- sensors_vec_t magnetic;
-
- long int delay;
- int uinput_fd;
-
- pthread_t thread;
- pthread_mutex_t mutex;
- int thread_continue;
-};
-
-static float rad2deg(float v)
-{
- return (v * 180.0f / 3.1415926535f);
-}
-
-static float vector_scalar(sensors_vec_t *v, sensors_vec_t *d)
-{
- return v->x * d->x + v->y * d->y + v->z * d->z;
-}
-
-static float vector_length(sensors_vec_t *v)
-{
- return sqrtf(vector_scalar(v, v));
-}
-
-void orientation_calculate(sensors_vec_t *a, sensors_vec_t *m, sensors_vec_t *o)
-{
- float azimuth, pitch, roll;
- float la, sinp, cosp, sinr, cosr, x, y;
-
- if (a == NULL || m == NULL || o == NULL)
- return;
-
- la = vector_length(a);
- pitch = asinf(-(a->y) / la);
- roll = asinf((a->x) / la);
-
- sinp = sinf(pitch);
- cosp = cosf(pitch);
- sinr = sinf(roll);
- cosr = cosf(roll);
-
- y = -(m->x) * cosr + m->z * sinr;
- x = m->x * sinp * sinr + m->y * cosp + m->z * sinp * cosr;
- azimuth = atan2f(y, x);
-
- o->x = rad2deg(azimuth);
- o->y = rad2deg(pitch);
- o->z = rad2deg(roll);
-
- if (o->x < 0)
- o->x += 360.0f;
-}
-
-void *orientation_thread(void *thread_data)
-{
- struct exynos_sensors_handlers *handlers = NULL;
- struct orientation_data *data = NULL;
- struct input_event event;
- struct timeval time;
- long int before, after;
- int diff;
- int uinput_fd;
-
- if (thread_data == NULL)
- return NULL;
-
- handlers = (struct exynos_sensors_handlers *) thread_data;
- if (handlers->data == NULL)
- return NULL;
-
- data = (struct orientation_data *) handlers->data;
-
- uinput_fd = data->uinput_fd;
- if (uinput_fd < 0)
- return NULL;
-
- while (data->thread_continue) {
- pthread_mutex_lock(&data->mutex);
- if (!data->thread_continue)
- break;
-
- while (handlers->activated) {
- gettimeofday(&time, NULL);
- before = timestamp(&time);
-
- orientation_calculate(&data->acceleration, &data->magnetic, &data->orientation);
-
- input_event_set(&event, EV_REL, REL_X, (int) (data->orientation.x * 1000));
- write(uinput_fd, &event, sizeof(event));
- input_event_set(&event, EV_REL, REL_Y, (int) (data->orientation.y * 1000));
- write(uinput_fd, &event, sizeof(event));
- input_event_set(&event, EV_REL, REL_Z, (int) (data->orientation.z * 1000));
- write(uinput_fd, &event, sizeof(event));
- input_event_set(&event, EV_SYN, 0, 0);
- write(uinput_fd, &event, sizeof(event));
-
- gettimeofday(&time, NULL);
- after = timestamp(&time);
-
- diff = (int) (data->delay - (after - before)) / 1000;
- if (diff <= 0)
- continue;
-
- usleep(diff);
- }
- }
-
- return NULL;
-}
-
-int orientation_fill(struct exynos_sensors_handlers *handlers,
- sensors_vec_t *acceleration, sensors_vec_t *magnetic)
-{
- struct orientation_data *data;
-
-// ALOGD("%s(%p, %p, %p)", __func__, handlers, acceleration, magnetic);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct orientation_data *) handlers->data;
-
- if (acceleration != NULL) {
- data->acceleration.x = acceleration->x;
- data->acceleration.y = acceleration->y;
- data->acceleration.z = acceleration->z;
- }
-
- if (magnetic != NULL) {
- data->magnetic.x = magnetic->x;
- data->magnetic.y = magnetic->y;
- data->magnetic.z = magnetic->z;
- }
-
- return 0;
-}
-
-int orientation_init(struct exynos_sensors_handlers *handlers,
- struct exynos_sensors_device *device)
-{
- struct orientation_data *data = NULL;
- pthread_attr_t thread_attr;
- int uinput_fd = -1;
- int input_fd = -1;
- int rc;
- int i;
-
- ALOGD("%s(%p, %p)", __func__, handlers, device);
-
- if (handlers == NULL || device == NULL)
- return -EINVAL;
-
- data = (struct orientation_data *) calloc(1, sizeof(struct orientation_data));
-
- for (i = 0; i < device->handlers_count; i++) {
- if (device->handlers[i] == NULL)
- continue;
-
- if (device->handlers[i]->handle == SENSOR_TYPE_ACCELEROMETER)
- data->acceleration_sensor = device->handlers[i];
- else if (device->handlers[i]->handle == SENSOR_TYPE_MAGNETIC_FIELD)
- data->magnetic_sensor = device->handlers[i];
- }
-
- if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL) {
- ALOGE("%s: Missing sensors for orientation", __func__);
- goto error;
- }
-
- uinput_fd = uinput_rel_create("orientation");
- if (uinput_fd < 0) {
- ALOGD("%s: Unable to create uinput", __func__);
- goto error;
- }
-
- input_fd = input_open("orientation");
- if (input_fd < 0) {
- ALOGE("%s: Unable to open orientation input", __func__);
- goto error;
- }
-
- data->thread_continue = 1;
-
- pthread_mutex_init(&data->mutex, NULL);
- pthread_mutex_lock(&data->mutex);
-
- pthread_attr_init(&thread_attr);
- pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_DETACHED);
-
- rc = pthread_create(&data->thread, &thread_attr, orientation_thread, (void *) handlers);
- if (rc < 0) {
- ALOGE("%s: Unable to create orientation thread", __func__);
- pthread_mutex_destroy(&data->mutex);
- goto error;
- }
-
- data->uinput_fd = uinput_fd;
- handlers->poll_fd = input_fd;
- handlers->data = (void *) data;
-
- return 0;
-
-error:
- if (data != NULL)
- free(data);
-
- if (uinput_fd >= 0)
- close(uinput_fd);
-
- if (input_fd >= 0)
- close(input_fd);
-
- handlers->poll_fd = -1;
- handlers->data = NULL;
-
- return -1;
-}
-
-int orientation_deinit(struct exynos_sensors_handlers *handlers)
-{
- struct orientation_data *data;
-
- ALOGD("%s(%p)", __func__, handlers);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct orientation_data *) handlers->data;
-
- handlers->activated = 0;
- data->thread_continue = 0;
- pthread_mutex_unlock(&data->mutex);
-
- pthread_mutex_destroy(&data->mutex);
-
- if (data->uinput_fd >= 0) {
- uinput_destroy(data->uinput_fd);
- close(data->uinput_fd);
- }
- data->uinput_fd = -1;
-
- if (handlers->poll_fd >= 0)
- close(handlers->poll_fd);
- handlers->poll_fd = -1;
-
- free(handlers->data);
- handlers->data = NULL;
-
- return 0;
-}
-
-int orientation_activate(struct exynos_sensors_handlers *handlers)
-{
- struct orientation_data *data;
-
- ALOGD("%s(%p)", __func__, handlers);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct orientation_data *) handlers->data;
-
- if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL)
- return -1;
-
- data->acceleration_sensor->needed |= EXYNOS_SENSORS_NEEDED_ORIENTATION;
- if (data->acceleration_sensor->needed == EXYNOS_SENSORS_NEEDED_ORIENTATION)
- data->acceleration_sensor->activate(data->acceleration_sensor);
-
- data->magnetic_sensor->needed |= EXYNOS_SENSORS_NEEDED_ORIENTATION;
- if (data->magnetic_sensor->needed == EXYNOS_SENSORS_NEEDED_ORIENTATION)
- data->magnetic_sensor->activate(data->magnetic_sensor);
-
- handlers->activated = 1;
- pthread_mutex_unlock(&data->mutex);
-
- return 0;
-}
-
-int orientation_deactivate(struct exynos_sensors_handlers *handlers)
-{
- struct orientation_data *data;
-
- ALOGD("%s(%p)", __func__, handlers);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct orientation_data *) handlers->data;
-
- if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL)
- return -1;
-
- data->acceleration_sensor->needed &= ~(EXYNOS_SENSORS_NEEDED_ORIENTATION);
- if (data->acceleration_sensor->needed == 0)
- data->acceleration_sensor->deactivate(data->acceleration_sensor);
-
- data->magnetic_sensor->needed &= ~(EXYNOS_SENSORS_NEEDED_ORIENTATION);
- if (data->magnetic_sensor->needed == 0)
- data->magnetic_sensor->deactivate(data->magnetic_sensor);
-
- handlers->activated = 0;
-
- return 0;
-}
-
-int orientation_set_delay(struct exynos_sensors_handlers *handlers, long int delay)
-{
- struct orientation_data *data;
-
- ALOGD("%s(%p)", __func__, handlers);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct orientation_data *) handlers->data;
-
- if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL)
- return -1;
-
- if (data->acceleration_sensor->needed == EXYNOS_SENSORS_NEEDED_ORIENTATION)
- data->acceleration_sensor->set_delay(data->acceleration_sensor, delay);
-
- if (data->magnetic_sensor->needed == EXYNOS_SENSORS_NEEDED_ORIENTATION)
- data->magnetic_sensor->set_delay(data->magnetic_sensor, delay);
-
- data->delay = delay;
-
- return 0;
-}
-
-float orientation_convert(int value)
-{
- return (float) value / 1000.0f;
-}
-
-int orientation_get_data(struct exynos_sensors_handlers *handlers,
- struct sensors_event_t *event)
-{
- struct orientation_data *data;
- struct input_event input_event;
- int input_fd = -1;
- int rc;
-
-// ALOGD("%s(%p, %p)", __func__, handlers, event);
-
- if (handlers == NULL || handlers->data == NULL || event == NULL)
- return -EINVAL;
-
- data = (struct orientation_data *) handlers->data;
-
- input_fd = handlers->poll_fd;
- if (input_fd < 0)
- return -EINVAL;
-
- event->version = sizeof(struct sensors_event_t);
- event->sensor = handlers->handle;
- event->type = handlers->handle;
-
- event->orientation.status = SENSOR_STATUS_ACCURACY_MEDIUM;
-
- do {
- rc = read(input_fd, &input_event, sizeof(input_event));
- if (rc < (int) sizeof(input_event))
- break;
-
- if (input_event.type == EV_REL) {
- switch (input_event.code) {
- case REL_X:
- event->orientation.x = orientation_convert(input_event.value);
- break;
- case REL_Y:
- event->orientation.y = orientation_convert(input_event.value);
- break;
- case REL_Z:
- event->orientation.z = orientation_convert(input_event.value);
- break;
- default:
- continue;
- }
- } else if (input_event.type == EV_SYN) {
- if (input_event.code == SYN_REPORT)
- event->timestamp = input_timestamp(&input_event);
- }
- } while (input_event.type != EV_SYN);
-
- return 0;
-}
-
-struct exynos_sensors_handlers orientation = {
- .name = "Orientation",
- .handle = SENSOR_TYPE_ORIENTATION,
- .init = orientation_init,
- .deinit = orientation_deinit,
- .activate = orientation_activate,
- .deactivate = orientation_deactivate,
- .set_delay = orientation_set_delay,
- .get_data = orientation_get_data,
- .activated = 0,
- .needed = 0,
- .poll_fd = -1,
- .data = NULL,
-};
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