+void sensor_update_max_range(int s)
+{
+ if (sensor[s].max_range)
+ return;
+
+ if (sensor[s].num_channels && sensor[s].channel[0].type_info.realbits) {
+ switch (sensor[s].type) {
+ case SENSOR_TYPE_MAGNETIC_FIELD:
+ sensor[s].max_range = (1ULL << sensor[s].channel[0].type_info.realbits) *
+ CONVERT_MICROTESLA_TO_GAUSS(sensor[s].resolution) +
+ (sensor[s].offset || sensor[s].channel[0].offset);
+ sensor[s].max_range = CONVERT_GAUSS_TO_MICROTESLA(sensor[s].max_range);
+ break;
+ case SENSOR_TYPE_PROXIMITY:
+ break;
+ default:
+ sensor[s].max_range = (1ULL << sensor[s].channel[0].type_info.realbits) *
+ sensor[s].resolution + (sensor[s].offset || sensor[s].channel[0].offset);
+ break;
+ }
+ }
+
+ if (!sensor[s].max_range) {
+ /* Try returning a sensible value given the sensor type */
+ /* We should cap returned samples accordingly... */
+ switch (sensor[s].type) {
+ case SENSOR_TYPE_ACCELEROMETER: /* m/s^2 */
+ sensor[s].max_range = 50;
+ break;
+ case SENSOR_TYPE_MAGNETIC_FIELD: /* micro-tesla */
+ sensor[s].max_range = 500;
+ break;
+ case SENSOR_TYPE_ORIENTATION: /* degrees */
+ sensor[s].max_range = 360;
+ break;
+ case SENSOR_TYPE_GYROSCOPE: /* radians/s */
+ sensor[s].max_range = 10;
+ break;
+ case SENSOR_TYPE_LIGHT: /* SI lux units */
+ sensor[s].max_range = 50000;
+ break;
+ case SENSOR_TYPE_AMBIENT_TEMPERATURE: /* °C */
+ case SENSOR_TYPE_TEMPERATURE: /* °C */
+ case SENSOR_TYPE_PROXIMITY: /* centimeters */
+ case SENSOR_TYPE_PRESSURE: /* hecto-pascal */
+ case SENSOR_TYPE_RELATIVE_HUMIDITY: /* percent */
+ sensor[s].max_range = 100;
+ break;
+ }
+ }
+
+ if (sensor[s].max_range)
+ sensor_desc[s].maxRange = sensor[s].max_range;
+}