diff --git a/camera/device/3.4/default/ExternalCameraDeviceSession.cpp b/camera/device/3.4/default/ExternalCameraDeviceSession.cpp
index 4ef5fc9..66b17db 100644
--- a/camera/device/3.4/default/ExternalCameraDeviceSession.cpp
+++ b/camera/device/3.4/default/ExternalCameraDeviceSession.cpp
@@ -2163,7 +2163,8 @@
     }
 }
 
-bool ExternalCameraDeviceSession::isSupported(const Stream& stream) {
+bool ExternalCameraDeviceSession::isSupported(const Stream& stream,
+        const std::vector<SupportedV4L2Format>& supportedFormats) {
     int32_t ds = static_cast<int32_t>(stream.dataSpace);
     PixelFormat fmt = stream.format;
     uint32_t width = stream.width;
@@ -2206,7 +2207,7 @@
     // Assume we can convert any V4L2 format to any of supported output format for now, i.e,
     // ignoring v4l2Fmt.fourcc for now. Might need more subtle check if we support more v4l format
     // in the futrue.
-    for (const auto& v4l2Fmt : mSupportedFormats) {
+    for (const auto& v4l2Fmt : supportedFormats) {
         if (width == v4l2Fmt.width && height == v4l2Fmt.height) {
             return true;
         }
@@ -2541,11 +2542,9 @@
     mV4L2BufferReturned.notify_one();
 }
 
-Status ExternalCameraDeviceSession::configureStreams(
+Status ExternalCameraDeviceSession::isStreamCombinationSupported(
         const V3_2::StreamConfiguration& config,
-        V3_3::HalStreamConfiguration* out,
-        uint32_t blobBufferSize) {
-    ATRACE_CALL();
+        const std::vector<SupportedV4L2Format>& supportedFormats) {
     if (config.operationMode != StreamConfigurationMode::NORMAL_MODE) {
         ALOGE("%s: unsupported operation mode: %d", __FUNCTION__, config.operationMode);
         return Status::ILLEGAL_ARGUMENT;
@@ -2560,7 +2559,7 @@
     int numStallStream = 0;
     for (const auto& stream : config.streams) {
         // Check if the format/width/height combo is supported
-        if (!isSupported(stream)) {
+        if (!isSupported(stream, supportedFormats)) {
             return Status::ILLEGAL_ARGUMENT;
         }
         if (stream.format == PixelFormat::BLOB) {
@@ -2582,7 +2581,21 @@
         return Status::ILLEGAL_ARGUMENT;
     }
 
-    Status status = initStatus();
+    return Status::OK;
+}
+
+Status ExternalCameraDeviceSession::configureStreams(
+        const V3_2::StreamConfiguration& config,
+        V3_3::HalStreamConfiguration* out,
+        uint32_t blobBufferSize) {
+    ATRACE_CALL();
+
+    Status status = isStreamCombinationSupported(config, mSupportedFormats);
+    if (status != Status::OK) {
+        return status;
+    }
+
+    status = initStatus();
     if (status != Status::OK) {
         return status;
     }
diff --git a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h
index cabeaa4..9cc55cb 100644
--- a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h
+++ b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h
@@ -193,13 +193,16 @@
     int configureV4l2StreamLocked(const SupportedV4L2Format& fmt, double fps = 0.0);
     int v4l2StreamOffLocked();
     int setV4l2FpsLocked(double fps);
+    static Status isStreamCombinationSupported(const V3_2::StreamConfiguration& config,
+            const std::vector<SupportedV4L2Format>& supportedFormats);
 
     // TODO: change to unique_ptr for better tracking
     sp<V4L2Frame> dequeueV4l2FrameLocked(/*out*/nsecs_t* shutterTs); // Called with mLock hold
     void enqueueV4l2Frame(const sp<V4L2Frame>&);
 
     // Check if input Stream is one of supported stream setting on this device
-    bool isSupported(const Stream&);
+    static bool isSupported(const Stream& stream,
+            const std::vector<SupportedV4L2Format>& supportedFormats);
 
     // Validate and import request's output buffers and acquire fence
     virtual Status importRequestLocked(