Replace basic_string<uint8_t> with std::vector

In newer versions of libc++, std::char_traits<T> is no longer defined
for non-character types, and a result, std::basic_string<uint8_t> is
also no longer defined. See
https://discourse.llvm.org/t/deprecating-std-string-t-for-non-character-t/66779.

Bug: 175635923
Test: make checkbuild
Change-Id: I1893d1b1419f528115739275ca0f1d80ddb22470
diff --git a/media/libaudiohal/impl/DeviceHalAidl.cpp b/media/libaudiohal/impl/DeviceHalAidl.cpp
index fe44ecd..1d8fec0 100644
--- a/media/libaudiohal/impl/DeviceHalAidl.cpp
+++ b/media/libaudiohal/impl/DeviceHalAidl.cpp
@@ -398,8 +398,7 @@
                       *static_cast<StreamCallbackBase*>(this)),
               StreamCallbackBaseHelper<StreamOutHalInterfaceLatencyModeCallback>(
                       *static_cast<StreamCallbackBase*>(this)) {}
-    ndk::ScopedAStatus onCodecFormatChanged(const std::vector<uint8_t>& in_audioMetadata) override {
-        std::basic_string<uint8_t> halMetadata(in_audioMetadata.begin(), in_audioMetadata.end());
+    ndk::ScopedAStatus onCodecFormatChanged(const std::vector<uint8_t>& halMetadata) override {
         return StreamCallbackBaseHelper<StreamOutHalInterfaceEventCallback>::runCb(
                 [&halMetadata](auto cb) { cb->onCodecFormatChanged(halMetadata); });
     }
diff --git a/media/libaudiohal/impl/StreamHalHidl.cpp b/media/libaudiohal/impl/StreamHalHidl.cpp
index 72eadc6..77c75db 100644
--- a/media/libaudiohal/impl/StreamHalHidl.cpp
+++ b/media/libaudiohal/impl/StreamHalHidl.cpp
@@ -840,7 +840,7 @@
             const android::hardware::hidl_vec<uint8_t>& audioMetadata)  override {
         sp<StreamOutHalHidl> stream = mStream.promote();
         if (stream != nullptr) {
-            std::basic_string<uint8_t> metadataBs(audioMetadata.begin(), audioMetadata.end());
+            std::vector<uint8_t> metadataBs(audioMetadata.begin(), audioMetadata.end());
             stream->onCodecFormatChanged(metadataBs);
         }
         return Void();
@@ -967,7 +967,7 @@
     callback->onError();
 }
 
-void StreamOutHalHidl::onCodecFormatChanged(const std::basic_string<uint8_t>& metadataBs) {
+void StreamOutHalHidl::onCodecFormatChanged(const std::vector<uint8_t>& metadataBs) {
     sp<StreamOutHalInterfaceEventCallback> callback = mEventCallback.load().promote();
     if (callback == nullptr) return;
     ALOGV("asyncCodecFormatCallback %s", __func__);
diff --git a/media/libaudiohal/impl/StreamHalHidl.h b/media/libaudiohal/impl/StreamHalHidl.h
index 5361047..48da633 100644
--- a/media/libaudiohal/impl/StreamHalHidl.h
+++ b/media/libaudiohal/impl/StreamHalHidl.h
@@ -194,7 +194,7 @@
     status_t setEventCallback(const sp<StreamOutHalInterfaceEventCallback>& callback) override;
 
     // Methods used by StreamCodecFormatCallback (HIDL).
-    void onCodecFormatChanged(const std::basic_string<uint8_t>& metadataBs);
+    void onCodecFormatChanged(const std::vector<uint8_t>& metadataBs);
 
     status_t setLatencyMode(audio_latency_mode_t mode) override;
     status_t getRecommendedLatencyModes(std::vector<audio_latency_mode_t> *modes) override;