Revert "Revert "audio policy for concurrent capture.""

This reverts commit 84332aaa807037baca05340875f2d94fcc519ac4.

Bug:26841909
diff --git a/services/audiopolicy/service/AudioPolicyEffects.h b/services/audiopolicy/service/AudioPolicyEffects.h
index 3dec437..58ea24c 100644
--- a/services/audiopolicy/service/AudioPolicyEffects.h
+++ b/services/audiopolicy/service/AudioPolicyEffects.h
@@ -51,7 +51,7 @@
 
     // Return a list of effect descriptors for default input effects
     // associated with audioSession
-    status_t queryDefaultInputEffects(int audioSession,
+    status_t queryDefaultInputEffects(audio_session_t audioSession,
                              effect_descriptor_t *descriptors,
                              uint32_t *count);
 
@@ -59,15 +59,16 @@
     // Effects are attached depending on the audio_source_t
     status_t addInputEffects(audio_io_handle_t input,
                              audio_source_t inputSource,
-                             int audioSession);
+                             audio_session_t audioSession);
 
     // Add all input effects associated to this input
-    status_t releaseInputEffects(audio_io_handle_t input);
+    status_t releaseInputEffects(audio_io_handle_t input,
+                                 audio_session_t audioSession);
 
 
     // Return a list of effect descriptors for default output effects
     // associated with audioSession
-    status_t queryDefaultOutputSessionEffects(int audioSession,
+    status_t queryDefaultOutputSessionEffects(audio_session_t audioSession,
                              effect_descriptor_t *descriptors,
                              uint32_t *count);
 
@@ -75,12 +76,12 @@
     // Effects are attached depending on the audio_stream_type_t
     status_t addOutputSessionEffects(audio_io_handle_t output,
                              audio_stream_type_t stream,
-                             int audioSession);
+                             audio_session_t audioSession);
 
     // release all output effects associated with this output stream and audiosession
     status_t releaseOutputSessionEffects(audio_io_handle_t output,
                              audio_stream_type_t stream,
-                             int audioSession);
+                             audio_session_t audioSession);
 
 private:
 
@@ -178,17 +179,17 @@
                          size_t *curSize,
                          size_t *totSize);
 
-    // protects access to mInputSources, mInputs, mOutputStreams, mOutputSessions
+    // protects access to mInputSources, mInputSessions, mOutputStreams, mOutputSessions
     Mutex mLock;
     // Automatic input effects are configured per audio_source_t
     KeyedVector< audio_source_t, EffectDescVector* > mInputSources;
     // Automatic input effects are unique for audio_io_handle_t
-    KeyedVector< audio_io_handle_t, EffectVector* > mInputs;
+    KeyedVector< audio_session_t, EffectVector* > mInputSessions;
 
     // Automatic output effects are organized per audio_stream_type_t
     KeyedVector< audio_stream_type_t, EffectDescVector* > mOutputStreams;
     // Automatic output effects are unique for audiosession ID
-    KeyedVector< int32_t, EffectVector* > mOutputSessions;
+    KeyedVector< audio_session_t, EffectVector* > mOutputSessions;
 };
 
 }; // namespace android