C++11 compatibility.

 * Fix string literal concatenation to not be interpreted as UD
   literals.
 * Add constexpr compatibility for non-integral static members.
 * Use __typeof__ instead of typeof (should become decltype once this
   actually becomes C++11).
 * Add an appropriate cast for atomic_uintptr_t, since moving to C++11
   means moving from <stdatomic.h> to <atomic>, which has better
   typechecking (hooray for not macros!).

Bug: 18466763
Change-Id: I9561dcb2526578687819ff85421ba80d8e1a9694

4 files changed, 16 insertions, 12 deletions

diff --git a/services/audioflinger/AudioMixer.h b/services/audioflinger/AudioMixer.h
index 3b972bb..f4f142b 100644
--- a/services/audioflinger/AudioMixer.h
+++ b/services/audioflinger/AudioMixer.h
@@ -21,15 +21,15 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <hardware/audio_effect.h>
+#include <media/AudioBufferProvider.h>
+#include <media/nbaio/NBLog.h>
+#include <system/audio.h>
+#include <utils/Compat.h>
 #include <utils/threads.h>
 
-#include <media/AudioBufferProvider.h>
 #include "AudioResampler.h"
 
-#include <hardware/audio_effect.h>
-#include <system/audio.h>
-#include <media/nbaio/NBLog.h>
-
 // FIXME This is actually unity gain, which might not be max in future, expressed in U.12
 #define MAX_GAIN_INT AudioMixer::UNITY_GAIN_INT
 
@@ -58,7 +58,7 @@ public:
     static const uint32_t MAX_NUM_CHANNELS_TO_DOWNMIX = AUDIO_CHANNEL_COUNT_MAX;
 
     static const uint16_t UNITY_GAIN_INT = 0x1000;
-    static const float    UNITY_GAIN_FLOAT = 1.0f;
+    static const CONSTEXPR float UNITY_GAIN_FLOAT = 1.0f;
 
     enum { // names
 
diff --git a/services/audioflinger/AudioResampler.h b/services/audioflinger/AudioResampler.h
index cdc6d92..069d946 100644
--- a/services/audioflinger/AudioResampler.h
+++ b/services/audioflinger/AudioResampler.h
@@ -19,7 +19,9 @@
 
 #include <stdint.h>
 #include <sys/types.h>
+
 #include <cutils/compiler.h>
+#include <utils/Compat.h>
 
 #include <media/AudioBufferProvider.h>
 #include <system/audio.h>
@@ -47,7 +49,7 @@ public:
         DYN_HIGH_QUALITY=7,
     };
 
-    static const float UNITY_GAIN_FLOAT = 1.0f;
+    static const CONSTEXPR float UNITY_GAIN_FLOAT = 1.0f;
 
     static AudioResampler* create(audio_format_t format, int inChannelCount,
             int32_t sampleRate, src_quality quality=DEFAULT_QUALITY);
diff --git a/services/audioflinger/AudioResamplerFirGen.h b/services/audioflinger/AudioResamplerFirGen.h
index d024b2f..f3718b6 100644
--- a/services/audioflinger/AudioResamplerFirGen.h
+++ b/services/audioflinger/AudioResamplerFirGen.h
@@ -17,6 +17,8 @@
 #ifndef ANDROID_AUDIO_RESAMPLER_FIR_GEN_H
 #define ANDROID_AUDIO_RESAMPLER_FIR_GEN_H
 
+#include "utils/Compat.h"
+
 namespace android {
 
 /*
@@ -187,22 +189,22 @@ static inline int64_t toint(double x, int64_t maxval) {
 
 template <int N>
 struct I0Term {
-    static const double value = I0Term<N-1>::value / (4. * N * N);
+    static const CONSTEXPR double value = I0Term<N-1>::value / (4. * N * N);
 };
 
 template <>
 struct I0Term<0> {
-    static const double value = 1.;
+    static const CONSTEXPR double value = 1.;
 };
 
 template <int N>
 struct I0ATerm {
-    static const double value = I0ATerm<N-1>::value * (2.*N-1.) * (2.*N-1.) / (8. * N);
+    static const CONSTEXPR double value = I0ATerm<N-1>::value * (2.*N-1.) * (2.*N-1.) / (8. * N);
 };
 
 template <>
 struct I0ATerm<0> { // 1/sqrt(2*PI);
-    static const double value = 0.398942280401432677939946059934381868475858631164934657665925;
+    static const CONSTEXPR double value = 0.398942280401432677939946059934381868475858631164934657665925;
 };
 
 #if USE_HORNERS_METHOD
diff --git a/services/audioflinger/StateQueue.cpp b/services/audioflinger/StateQueue.cpp
index 40d7bcd..9d4188f 100644
--- a/services/audioflinger/StateQueue.cpp
+++ b/services/audioflinger/StateQueue.cpp
@@ -48,7 +48,7 @@ template<typename T> StateQueue<T>::StateQueue() :
     , mObserverDump(&mObserverDummyDump), mMutatorDump(&mMutatorDummyDump)
 #endif
 {
-    atomic_init(&mNext, 0);
+    atomic_init(&mNext, static_cast<uintptr_t>(0));
 }
 
 template<typename T> StateQueue<T>::~StateQueue()