Add vendorExtension implementation for all unknown parameters

Only pass the parameter and data part of effect_param_t
Use ParcelableHolder as extension parameter ID

Bug: 271601435
Test: Build, atest VtsHalAudioEffectTargetTest
Change-Id: Ida11c20a1f681a8b99801eda54d5b500621ff8fd
diff --git a/media/libaudiohal/impl/effectsAidlConversion/AidlConversionDownmix.cpp b/media/libaudiohal/impl/effectsAidlConversion/AidlConversionDownmix.cpp
index 17cedf7..7bee37b 100644
--- a/media/libaudiohal/impl/effectsAidlConversion/AidlConversionDownmix.cpp
+++ b/media/libaudiohal/impl/effectsAidlConversion/AidlConversionDownmix.cpp
@@ -34,9 +34,11 @@
 namespace android {
 namespace effect {
 
+using ::aidl::android::getParameterSpecificField;
 using ::aidl::android::aidl_utils::statusTFromBinderStatus;
 using ::aidl::android::hardware::audio::effect::Downmix;
 using ::aidl::android::hardware::audio::effect::Parameter;
+using ::aidl::android::hardware::audio::effect::VendorExtension;
 using ::android::status_t;
 using utils::EffectParamReader;
 using utils::EffectParamWriter;
@@ -57,8 +59,10 @@
             break;
         }
         default: {
-            ALOGW("%s unknown param %s", __func__, param.toString().c_str());
-            return BAD_VALUE;
+            // for vendor extension, copy data area to the DefaultExtension, parameter ignored
+            VendorExtension ext = VALUE_OR_RETURN_STATUS(
+                    aidl::android::legacy2aidl_EffectParameterReader_Data_VendorExtension(param));
+            aidlParam = MAKE_SPECIFIC_PARAMETER(Downmix, downmix, vendor, ext);
         }
     }
 
@@ -83,8 +87,7 @@
             break;
         }
         default: {
-            ALOGW("%s unknown param %s", __func__, param.toString().c_str());
-            return BAD_VALUE;
+            VENDOR_EXTENSION_GET_AND_RETURN(Downmix, downmix, param);
         }
     }