feat: log libamera device resolutions and controls (#240)

Signed-off-by: Stephan Wendel <me@stephanwe.de>

libs/hwhandler.sh

@@ -21,8 +21,7 @@ detect_avail_cams() {
     local avail realpath
     avail="$(find /dev/v4l/by-id/ -iname "*index0" 2> /dev/null)"
     count="$(echo "${avail}" | wc -l)"
-    if [[ -d "/dev/v4l/by-id/" ]] &&
-    [[ -n "${avail}" ]]; then
+    if [[ -d "/dev/v4l/by-id/" ]] && [[ -n "${avail}" ]]; then
         log_msg "INFO: Found ${count} available v4l2 (UVC) camera(s)"
         echo "${avail}" | while read -r v4l; do
             realpath=$(readlink -e "${v4l}")
@@ -63,8 +62,8 @@ detect_libcamera() {
     local avail
     if [[ "$(is_raspberry_pi)" = "1" ]] &&
     [[ -x "$(command -v libcamera-hello)" ]]; then
-        avail="$(libcamera-hello --list-cameras | sed '/^\[.*\].*/d' | awk 'NR==1 {print $1}')"
-        if [[ "${avail}" = "Available" ]]; then
+        avail="$(libcamera-hello --list-cameras | grep -c "Available")"
+        if [[ "${avail}" = "1" ]]; then
             get_libcamera_path | wc -l
         else
             echo "0"
@@ -83,23 +82,61 @@ get_libcamera_path() {
     fi
 }
 
+# print libcamera resolutions
+list_picam_resolution() {
+    local prefix
+    prefix="$(date +'[%D %T]') crowsnest:"
+    log_msg "'libcamera' device(s) resolution(s) :"
+    while read -r i; do
+        printf "%s\t\t%s\n" "${prefix}" "${i}" >> "${CROWSNEST_LOG_PATH}"
+    done < <(libcamera-hello --list-cameras | sed '1,2d;s/Modes:/Colorspace:/')
+}
+
+get_libcamera_controls() {
+    local ust_bin flags
+    flags=( --camera-type=libcamera --camera-list_options )
+    ust_bin="${BASE_CN_PATH}/bin/camera-streamer/camera-streamer"
+    if [[ -x "${ust_bin}" ]]; then
+        "${ust_bin}" "${flags[@]}" --camera-path="$(get_libcamera_path)" 2> /dev/null | \
+        sed 's/device//g;/^SNAPSHOT/q' | sed '/^SNAPSHOT/d' | \
+        sed '/^CAMERA/d;/- property/d' | sed '/camera-streamer Version:/d' | \
+        sed 's/- available option: //g' | sed '/^$/d;' | \
+        sed 's/([0-9]*[a-z,0-9]\,//g' | sed '/type=7/d;/type=4/d' | \
+        sed 's/type=1/ (bool/g;s/type=3/ (int/g;s/type=5/ (float/g' | \
+        sed 's/\[/min=/g;s/\.\./ max=/g;s/\]$//g'
+    else
+        log_msg "WARN: 'libcamera' device option can not be displayed, because"
+        log_msg "WARN: camera-streamer is not installed"
+    fi
+}
+
+list_picam_controls() {
+    local prefix
+    prefix="$(date +'[%D %T]') crowsnest:"
+    log_msg "'libcamera' device controls :"
+    while read -r i; do
+        if [[ ! "${i}" =~ "INFO" ]]; then
+            printf "%s\t\t%s\n" "${prefix}" "${i}" >>"${CROWSNEST_LOG_PATH}"
+        fi
+    done < <(get_libcamera_controls)
+    # blank line workaround
+    log_msg ""
+}
+
 # Determine connected "legacy" device
 function detect_legacy {
     local avail
     if [[ "$(is_raspberry_pi)" = "1" ]] &&
     command -v vcgencmd &> /dev/null; then
-        if vcgencmd get_camera &> /dev/null ; then
-            avail="$(vcgencmd get_camera \
-                    | awk -F '=' '{ print $3 }' \
-                    | cut -d',' -f1 \
-                    )"
+        if vcgencmd get_camera &> /dev/null; then
+            avail="$( vcgencmd get_camera | awk -F '=' '{ print $3 }' | cut -d',' -f1)"
         fi
     fi
     echo "${avail:-0}"
 }
 
 function dev_is_legacy {
-    v4l2-ctl --list-devices |  grep -A1 -e 'mmal' | \
+    v4l2-ctl --list-devices | grep -A1 -e 'mmal' | \
     awk 'NR==2 {print $1}'
 }
 

libs/logging.sh

@@ -108,9 +108,13 @@ function print_cams {
         for device in $(get_libcamera_path); do
             log_msg "Detected 'libcamera' device -> ${device}"
         done
+        if [[ "$(is_pi5)" = "0" ]]; then
+            list_picam_resolution
+            list_picam_controls
+        fi
     fi
     if [[ "${legacy}" -ne 0 ]]; then
-        raspicam="$(v4l2-ctl --list-devices |  grep -A1 -e 'mmal' | \
+        raspicam="$(v4l2-ctl --list-devices | grep -A1 -e 'mmal' | \
         awk 'NR==2 {print $1}')"
         log_msg "Detected 'Raspicam' Device -> ${raspicam}"
         if [[ ! "${CROWSNEST_LOG_LEVEL}" = "quiet" ]]; then