AudioFlinger: Add clang tidy checks on build

First pass just enables warnings.

Test: compiles
Bug: 252907478
Change-Id: I3d0622ab908b85adb1913d8482d55e1950fdccc0
diff --git a/services/audioflinger/Android.bp b/services/audioflinger/Android.bp
index 43ef311..cef17ac 100644
--- a/services/audioflinger/Android.bp
+++ b/services/audioflinger/Android.bp
@@ -19,12 +19,128 @@
     ],
 }
 
+tidy_errors = [
+    // https://clang.llvm.org/extra/clang-tidy/checks/list.html
+    // For many categories, the checks are too many to specify individually.
+    // Feel free to disable as needed - as warnings are generally ignored,
+    // we treat warnings as errors.
+    "android-*",
+    "bugprone-*",
+    "cert-*",
+    "clang-analyzer-security*",
+    "google-*",
+    "misc-*",
+    //"modernize-*",  // explicitly list the modernize as they can be subjective.
+    "modernize-avoid-bind",
+    //"modernize-avoid-c-arrays", // std::array<> can be verbose
+    "modernize-concat-nested-namespaces",
+    //"modernize-deprecated-headers", // C headers still ok even if there is C++ equivalent.
+    "modernize-deprecated-ios-base-aliases",
+    "modernize-loop-convert",
+    "modernize-make-shared",
+    "modernize-make-unique",
+    // "modernize-pass-by-value",
+    "modernize-raw-string-literal",
+    "modernize-redundant-void-arg",
+    "modernize-replace-auto-ptr",
+    "modernize-replace-random-shuffle",
+    "modernize-return-braced-init-list",
+    "modernize-shrink-to-fit",
+    "modernize-unary-static-assert",
+    // "modernize-use-auto",  // found in MediaMetricsService.h, debatable - auto can obscure type
+    "modernize-use-bool-literals",
+    "modernize-use-default-member-init",
+    "modernize-use-emplace",
+    "modernize-use-equals-default",
+    "modernize-use-equals-delete",
+    // "modernize-use-nodiscard",
+    "modernize-use-noexcept",
+    "modernize-use-nullptr",
+    "modernize-use-override",
+    //"modernize-use-trailing-return-type", // not necessarily more readable
+    "modernize-use-transparent-functors",
+    "modernize-use-uncaught-exceptions",
+    "modernize-use-using",
+    "performance-*",
+
+    // Remove some pedantic stylistic requirements.
+    "-google-readability-casting", // C++ casts not always necessary and may be verbose
+    "-google-readability-todo",    // do not require TODO(info)
+
+    "-bugprone-unhandled-self-assignment",
+    "-bugprone-suspicious-string-compare",
+    "-cert-oop54-cpp", // found in TransactionLog.h
+    "-bugprone-narrowing-conversions", // b/182410845
+
+    // TODO(b/275642749) Reenable these warnings
+    "-bugprone-assignment-in-if-condition",
+    "-bugprone-forward-declaration-namespace",
+    "-bugprone-parent-virtual-call",
+    "-cert-dcl59-cpp",
+    "-cert-err34-c",
+    "-google-build-namespaces",
+    "-google-build-using-namespace",
+    "-google-default-arguments",
+    "-google-runtime-int",
+    "-misc-const-correctness",
+    "-misc-non-private-member-variables-in-classes",
+    "-modernize-concat-nested-namespaces",
+    "-modernize-loop-convert",
+    "-modernize-use-default-member-init",
+    "-modernize-use-equals-default",
+    "-modernize-use-nullptr",
+    "-modernize-use-override",
+    "-modernize-use-using",
+    "-performance-no-int-to-ptr",
+]
+
+// Eventually use common tidy defaults
+cc_defaults {
+    name: "audioflinger_flags_defaults",
+    // https://clang.llvm.org/docs/UsersManual.html#command-line-options
+    // https://clang.llvm.org/docs/DiagnosticsReference.html
+    cflags: [
+        "-Wall",
+        "-Wdeprecated",
+        "-Werror",
+        "-Werror=implicit-fallthrough",
+        "-Werror=sometimes-uninitialized",
+        "-Werror=conditional-uninitialized",
+        "-Wextra",
+
+        // suppress some warning chatter.
+        "-Wno-deprecated-copy-with-dtor",
+        "-Wno-deprecated-copy-with-user-provided-dtor",
+
+        "-Wredundant-decls",
+        "-Wshadow",
+        "-Wstrict-aliasing",
+        "-fstrict-aliasing",
+        "-Wthread-safety",
+        //"-Wthread-safety-negative", // experimental - looks broken in R.
+        "-Wunreachable-code",
+        "-Wunreachable-code-break",
+        "-Wunreachable-code-return",
+        "-Wunused",
+        "-Wused-but-marked-unused",
+        "-D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS",
+    ],
+    // https://clang.llvm.org/extra/clang-tidy/
+    tidy: true,
+    tidy_checks: tidy_errors,
+    tidy_checks_as_errors: tidy_errors,
+    tidy_flags: [
+      "-format-style=file",
+    ],
+}
+
 cc_library_shared {
     name: "libaudioflinger",
 
     defaults: [
         "latest_android_media_audio_common_types_cpp_shared",
         "latest_android_hardware_audio_core_sounddose_ndk_shared",
+        "audioflinger_flags_defaults",
     ],
 
     srcs: [