Make Camera3Device transport agnostic.

Add HidlCamera3Device* which seperates out hidl transport specific
functionality from Camera3Device* and related classes.

Bug: 196432585

Test: Camera CTS

Change-Id: Iee940614e261c345202144b9a0ea22a70a6e887b
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>
diff --git a/services/camera/libcameraservice/common/CameraProviderManager.cpp b/services/camera/libcameraservice/common/CameraProviderManager.cpp
index 4c9adfb..4227d28 100644
--- a/services/camera/libcameraservice/common/CameraProviderManager.cpp
+++ b/services/camera/libcameraservice/common/CameraProviderManager.cpp
@@ -278,6 +278,21 @@
     return deviceInfo->isSessionConfigurationSupported(configuration, overrideForPerfClass, status);
 }
 
+status_t CameraProviderManager::getCameraIdIPCTransport(const std::string &id,
+        IPCTransport *providerTransport) const {
+    std::lock_guard<std::mutex> lock(mInterfaceMutex);
+    auto deviceInfo = findDeviceInfoLocked(id);
+    if (deviceInfo == nullptr) {
+        return NAME_NOT_FOUND;
+    }
+    sp<ProviderInfo> parentProvider = deviceInfo->mParentProvider.promote();
+    if (parentProvider == nullptr) {
+        return DEAD_OBJECT;
+    }
+    *providerTransport = parentProvider->getIPCTransport();
+    return OK;
+}
+
 status_t CameraProviderManager::getCameraCharacteristics(const std::string &id,
         bool overrideForPerfClass, CameraMetadata* characteristics) const {
     std::lock_guard<std::mutex> lock(mInterfaceMutex);