Vivekbalachandar M | 7af3d83 | 2020-02-12 15:56:09 +0530 | [diff] [blame] | 1 | #!/system/bin/sh |
| 2 | |
| 3 | # Copyright 2017-2020 Fairphone B.V. |
| 4 | # |
| 5 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | # you may not use this file except in compliance with the License. |
| 7 | # You may obtain a copy of the License at |
| 8 | # |
| 9 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | # |
| 11 | # Unless required by applicable law or agreed to in writing, software |
| 12 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | # See the License for the specific language governing permissions and |
| 15 | # limitations under the License. |
| 16 | # |
| 17 | |
| 18 | set -e |
| 19 | set -u |
| 20 | set -x |
| 21 | |
| 22 | readonly PERSIST_PATH="persist" |
| 23 | readonly PROP_PATH="fp2.cam" |
| 24 | |
| 25 | readonly ANY_FRAGMENT="any" |
| 26 | readonly SUBDEV_FRAGMENT="dev" |
| 27 | readonly SENSOR_FRAGMENT="sensor" |
| 28 | readonly CHANGED_FRAGMENT="changed" |
| 29 | |
| 30 | readonly POSITIONS="main front" |
| 31 | |
| 32 | readonly MAIN_SENSORS_PATTERN="(ov8865_q8v18a|ov12870)" |
| 33 | readonly FRONT_SENSORS_PATTERN="(ov2685|ov5670)" |
| 34 | |
| 35 | readonly SYSFS_PATH="/sys/devices/fd8c0000.qcom,msm-cam/video4linux/*/name" |
| 36 | |
| 37 | |
| 38 | function _detect_front_sensor() { |
| 39 | local sensor_name=`cat ${SYSFS_PATH} | grep -o -E "${FRONT_SENSORS_PATTERN}"` |
| 40 | setprop \ |
| 41 | "${PROP_PATH}.front.${SENSOR_FRAGMENT}" \ |
| 42 | "${sensor_name}" |
| 43 | } |
| 44 | |
| 45 | |
| 46 | function _detect_main_sensor() { |
| 47 | local sensor_name=`cat ${SYSFS_PATH} | grep -o -E "${MAIN_SENSORS_PATTERN}"` |
| 48 | setprop \ |
| 49 | "${PROP_PATH}.main.${SENSOR_FRAGMENT}" \ |
| 50 | "${sensor_name}" |
| 51 | } |
| 52 | |
| 53 | |
| 54 | # Compare persist.* property with new property to detect if main or front |
| 55 | # Sensor has changed. |
| 56 | # |
| 57 | # Sets *.changed property to 1 for any sensor that has changed. |
| 58 | # |
| 59 | # Overwrites persist.* property with new sensor name. |
| 60 | function _detect_and_persist_sensor_change() { |
| 61 | local changed_any_sensor=0 |
| 62 | |
| 63 | for pos in ${POSITIONS}; do |
| 64 | local changed_sensor=0 |
| 65 | |
| 66 | local property="${PROP_PATH}.${pos}.${SENSOR_FRAGMENT}" |
| 67 | |
| 68 | local old_sensor="$(getprop "${PERSIST_PATH}.${property}")" |
| 69 | local new_sensor="$(getprop "${property}")" |
| 70 | |
| 71 | # advocate change if: |
| 72 | # a sensor is detected in the current position |
| 73 | # AND a persist value is set (a camera was previously installed) |
| 74 | # AND a different sensor is detected than stored in the persist value |
| 75 | if [[ -n "${new_sensor}" ]] \ |
| 76 | && [[ -n "${old_sensor}" ]] \ |
| 77 | && [[ "${old_sensor}" != "${new_sensor}" ]] ; then |
| 78 | setprop "${PROP_PATH}.${pos}.${CHANGED_FRAGMENT}" "1" |
| 79 | changed_any_sensor=1 |
| 80 | fi |
| 81 | |
| 82 | # set new persist value with the new sensor name if it's non-empty |
| 83 | if [[ -n "${new_sensor}" ]]; then |
| 84 | setprop "${PERSIST_PATH}.${property}" "${new_sensor}" |
| 85 | fi |
| 86 | done |
| 87 | |
| 88 | echo "${changed_any_sensor}" |
| 89 | } |
| 90 | |
| 91 | |
| 92 | function _camera_detect_service() { |
| 93 | _detect_main_sensor |
| 94 | _detect_front_sensor |
| 95 | local changed_any_sensor="$(_detect_and_persist_sensor_change)" |
| 96 | setprop "${PROP_PATH}.${ANY_FRAGMENT}.${CHANGED_FRAGMENT}" \ |
| 97 | "${changed_any_sensor}" |
| 98 | } |
| 99 | |
| 100 | _camera_detect_service |