Add remote submix direct paths

Explicitly reject remote submix non PCM input or output streams.

Bug: 311830316
Test: atest VtsHalAudioCoreTargetTest
Change-Id: I3da9282d0f4ecb91dea65f784294e94436765538
diff --git a/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp b/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp
index 2f42889..f3965ba 100644
--- a/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp
+++ b/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp
@@ -27,6 +27,7 @@
 
 using aidl::android::hardware::audio::common::SinkMetadata;
 using aidl::android::hardware::audio::common::SourceMetadata;
+using aidl::android::media::audio::common::AudioFormatType;
 using aidl::android::media::audio::common::AudioOffloadInfo;
 using aidl::android::media::audio::common::AudioPort;
 using aidl::android::media::audio::common::AudioPortConfig;
@@ -47,6 +48,10 @@
 ndk::ScopedAStatus ModuleRemoteSubmix::createInputStream(
         StreamContext&& context, const SinkMetadata& sinkMetadata,
         const std::vector<MicrophoneInfo>& microphones, std::shared_ptr<StreamIn>* result) {
+    if (context.getFormat().type != AudioFormatType::PCM) {
+        LOG(DEBUG) << __func__ << ": not supported for format " << context.getFormat().toString();
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
     return createStreamInstance<StreamInRemoteSubmix>(result, std::move(context), sinkMetadata,
                                                       microphones);
 }
@@ -54,6 +59,10 @@
 ndk::ScopedAStatus ModuleRemoteSubmix::createOutputStream(
         StreamContext&& context, const SourceMetadata& sourceMetadata,
         const std::optional<AudioOffloadInfo>& offloadInfo, std::shared_ptr<StreamOut>* result) {
+    if (context.getFormat().type != AudioFormatType::PCM) {
+        LOG(DEBUG) << __func__ << ": not supported for format " << context.getFormat().toString();
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
     return createStreamInstance<StreamOutRemoteSubmix>(result, std::move(context), sourceMetadata,
                                                        offloadInfo);
 }