nativemidi: Prototype demonstrating native access to IMidiDeviceServer

Framework changes and a demo app
Comment and finalized Native MIDI API
Replaced fixed PortRegistry tables with std::map.
more error handling.
Removed not-very-useful MidiDeviceManager class.
Made Java API functions @hide.

Bug: 30252756

Test: Manual
Change-Id: Iae98e589f38ef6d625ff0842401193fe98c5d881
diff --git a/media/native/midi/Android.mk b/media/native/midi/Android.mk
new file mode 100644
index 0000000..b91c430
--- /dev/null
+++ b/media/native/midi/Android.mk
@@ -0,0 +1,22 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+	../../java/android/media/midi/IMidiDeviceServer.aidl \
+	midi.cpp \
+	MidiDeviceRegistry.cpp \
+	MidiPortRegistry.cpp
+
+LOCAL_AIDL_INCLUDES := \
+	$(FRAMEWORKS_BASE_JAVA_SRC_DIRS) \
+	frameworks/native/aidl/binder
+
+LOCAL_CFLAGS += -Wall -Werror -O0
+
+LOCAL_MODULE := libmidi
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SHARED_LIBRARIES := liblog libbinder libutils libmedia
+
+include $(BUILD_SHARED_LIBRARY)