libeffects: Rename .c files at lvm/lib to .cpp

Removed extern "C" declaration in header files. Since all
files at lvm/lib are .cpp and all function names are unique,
extern "C" is no longer required.
Note: Build errors due to renaming of files to .cpp
are taken care in this patch.

Test: android.media.cts.AudioEffectTest
Test: android.media.cts.AudioPreProcessingTest
Test: android.media.cts.BassBoostTest
Test: android.media.cts.EnvReverbTest
Test: android.media.cts.EqualizerTest
Test: android.media.cts.LoudnessEnhancerTest
Test: android.media.cts.PresetReverbTest
Test: android.media.cts.VirtualizerTest
Test: android.media.cts.VisualizerTest
Test: Play Music offload / non-offload
Test: Tested using standalone application
Bug: 129491957
Change-Id: I7033146c21681372a212d507f959ab02568b7538
diff --git a/media/libeffects/lvm/wrapper/Android.bp b/media/libeffects/lvm/wrapper/Android.bp
index 16fa126..5fb6d12 100644
--- a/media/libeffects/lvm/wrapper/Android.bp
+++ b/media/libeffects/lvm/wrapper/Android.bp
@@ -14,7 +14,7 @@
     vendor: true,
     srcs: ["Bundle/EffectBundle.cpp"],
 
-    cflags: [
+    cppflags: [
         "-fvisibility=hidden",
         "-DBUILD_FLOAT",
         "-DHIGHER_FS",
@@ -56,7 +56,7 @@
     vendor: true,
     srcs: ["Reverb/EffectReverb.cpp"],
 
-    cflags: [
+    cppflags: [
         "-fvisibility=hidden",
         "-DBUILD_FLOAT",
         "-DHIGHER_FS",
diff --git a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
index e4aacd0..d8e2ec6 100644
--- a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
+++ b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
@@ -23,9 +23,6 @@
 #include <LVM.h>
 #include <limits.h>
 
-#if __cplusplus
-extern "C" {
-#endif
 
 #define FIVEBAND_NUMBANDS          5
 #define MAX_NUM_BANDS              5
@@ -228,9 +225,6 @@
 
 static const float LimitLevel_virtualizerContribution = 1.9;
 
-#if __cplusplus
-}  // extern "C"
-#endif
 
 
 #endif /*ANDROID_EFFECTBUNDLE_H_*/
diff --git a/media/libeffects/lvm/wrapper/Reverb/EffectReverb.h b/media/libeffects/lvm/wrapper/Reverb/EffectReverb.h
index 8165f5a..b2d47af 100644
--- a/media/libeffects/lvm/wrapper/Reverb/EffectReverb.h
+++ b/media/libeffects/lvm/wrapper/Reverb/EffectReverb.h
@@ -20,9 +20,6 @@
 #include <audio_effects/effect_environmentalreverb.h>
 #include <audio_effects/effect_presetreverb.h>
 
-#if __cplusplus
-extern "C" {
-#endif
 
 #define MAX_NUM_BANDS           5
 #define MAX_CALL_SIZE           256
@@ -38,9 +35,6 @@
     int16_t Room_HF;
     int16_t LPF;
 } LPFPair_t;
-#if __cplusplus
-}  // extern "C"
-#endif
 
 
 #endif /*ANDROID_EFFECTREVERB_H_*/