car: add evs hal

* EVS camera HAL supports UVC USB webcams. CSI camera modules are not
  supported with EVS. CSI camera modules need to be disconnected when using
  EVS so that UVC USB webcam will populate the first video device
  (/dev/video0).
* Enable default Android camera service so regular camera apps can be used
  as well (CSI camera modules & UVC USB webcams).
* Fixes https://github.com/raspberry-vanilla/android_local_manifest/issues/23

aosp_rpi4_car.mk

@@ -39,6 +39,18 @@ PRODUCT_VENDOR_PROPERTIES += \
     bluetooth.profile.sap.server.enabled=false \
     bluetooth.profile.vcp.controller.enabled=false
 
+# Camera
+ENABLE_CAMERA_SERVICE := true
+
+# EVS
+ENABLE_CAREVSSERVICE_SAMPLE := true
+ENABLE_EVS_SAMPLE := true
+ENABLE_EVS_SERVICE := true
+ENABLE_REAR_VIEW_CAMERA_SAMPLE := true
+
+PRODUCT_COPY_FILES += \
+    device/brcm/rpi4/camera/evs_config_override.json:${TARGET_COPY_OUT_SYSTEM}/etc/automotive/evs/config_override.json
+
 # Overlays
 PRODUCT_PACKAGES += \
     AndroidRpiOverlay \

camera/evs_config_override.json

@@ -0,0 +1,85 @@
+
+{
+  "car" : {
+    "width"  : 76.7,
+    "wheelBase" : 117.9,
+    "frontExtent" : 44.7,
+    "rearExtent" : 40
+  },
+  "displays" : [
+    {
+      "_comment": "Display0",
+      "displayPort" : 0,
+      "frontRange" : 100,
+      "rearRange" : 100
+    },
+    {
+      "_comment": "Display1",
+      "displayPort" : 1,
+      "frontRange" : 100,
+      "rearRange" : 100
+    }
+  ],
+  "graphic" : {
+    "frontPixel" : -20,
+    "rearPixel" : 260
+  },
+  "cameras" : [
+    {
+      "cameraId" : "/dev/video0",
+      "function" : "reverse",
+      "x" : 0.0,
+      "y" : 20.0,
+      "z" : 48,
+      "yaw" : 180,
+      "pitch" : -10,
+      "roll" : 0,
+      "hfov" : 115,
+      "vfov" : 80,
+      "hflip" : true,
+      "vflip" : false
+    },
+    {
+      "cameraId" : "1",
+      "function" : "front",
+      "x" : 0.0,
+      "y" : 100.0,
+      "z" : 48,
+      "yaw" : 0,
+      "pitch" : -10,
+      "roll" : 0,
+      "hfov" : 115,
+      "vfov" : 80,
+      "hflip" : false,
+      "vflip" : false
+    },
+    {
+      "cameraId" : "2",
+      "function" : "right",
+      "x" : -25.0,
+      "y" : 60.0,
+      "z" : 88,
+      "yaw" : -90,
+      "pitch" : -10,
+      "roll" : 0,
+      "hfov" : 60,
+      "vfov" : 62,
+      "hflip" : false,
+      "vflip" : false
+    },
+    {
+      "cameraId" : "3",
+      "function" : "left",
+      "x" : 20.0,
+      "y" : 60.0,
+      "z" : 88,
+      "yaw" : 90,
+      "pitch" : -10,
+      "roll" : 0,
+      "hfov" : 60,
+      "vfov" : 62,
+      "hflip" : false,
+      "vflip" : false
+    }
+  ]
+}

overlay/CarServiceRpiOverlay/res/values/config.xml

@@ -26,4 +26,13 @@
          Setting this string to empty will disable the feature. -->
     <string name="config_userNoticeUiService" translatable="false"></string>
 
+    <!-- A name of a camera device that provides the rearview through EVS service -->
+    <string name="config_evsRearviewCameraId" translatable="false">/dev/video0</string>
+
+    <!-- The camera Activity name for EVS, if defined, the Activity will be launched by
+         CarEvsService. -->
+    <string name="config_evsCameraActivity" translatable="false">
+        com.google.android.car.evs/com.google.android.car.evs.CarEvsCameraPreviewActivity
+    </string>
+
 </resources>