Camera2: Add flush support

- On HAL2 devices, fall back to wait until idle
- On HAL3 devices, call HAL flush method

Bug: 9758581
Change-Id: Ie1c570a15f6590a1ee6c271e3b989c48079b468a

1 files changed, 17 insertions, 0 deletions

diff --git a/camera/camera2/ICameraDeviceUser.cpp b/camera/camera2/ICameraDeviceUser.cpp
index 923f487..ae4cf69 100644
--- a/camera/camera2/ICameraDeviceUser.cpp
+++ b/camera/camera2/ICameraDeviceUser.cpp
@@ -41,6 +41,7 @@ enum {
     CREATE_DEFAULT_REQUEST,
     GET_CAMERA_INFO,
     WAIT_UNTIL_IDLE,
+    FLUSH
 };
 
 class BpCameraDeviceUser : public BpInterface<ICameraDeviceUser>
@@ -183,6 +184,16 @@ public:
         return reply.readInt32();
     }
 
+    virtual status_t flush()
+    {
+        ALOGV("flush");
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
+        remote()->transact(FLUSH, data, &reply);
+        reply.readExceptionCode();
+        return reply.readInt32();
+    }
+
 private:
 
 
@@ -312,6 +323,12 @@ status_t BnCameraDeviceUser::onTransact(
             reply->writeInt32(waitUntilIdle());
             return NO_ERROR;
         } break;
+        case FLUSH: {
+            CHECK_INTERFACE(ICameraDeviceUser, data, reply);
+            reply->writeNoException();
+            reply->writeInt32(flush());
+            return NO_ERROR;
+        }
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }