Add sound trigger control by audio policy

Audio policy:
- Added active capture indication to sound trigger service:
recognition stops if concurrent capture is not supported.
- Added generation of reserved I/O handle and session ID for
utterance capture.

Sound trigger service
- Added sound model update callback handling.
- Added service state callback
- Simplified callback shared memory allocation.

Bug: 12378680.

Change-Id: Ib0292c2733e6df90fdae480633dd9953d0016ef1

1 files changed, 35 insertions, 0 deletions

diff --git a/soundtrigger/ISoundTriggerClient.cpp b/soundtrigger/ISoundTriggerClient.cpp
index 1d0c0ec..b0b4428 100644
--- a/soundtrigger/ISoundTriggerClient.cpp
+++ b/soundtrigger/ISoundTriggerClient.cpp
@@ -27,6 +27,8 @@ namespace android {
 
 enum {
     ON_RECOGNITION_EVENT = IBinder::FIRST_CALL_TRANSACTION,
+    ON_SOUNDMODEL_EVENT,
+    ON_SERVICE_STATE_CHANGE
 };
 
 class BpSoundTriggerClient: public BpInterface<ISoundTriggerClient>
@@ -47,6 +49,25 @@ public:
                            data,
                            &reply);
     }
+
+    virtual void onSoundModelEvent(const sp<IMemory>& eventMemory)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISoundTriggerClient::getInterfaceDescriptor());
+        data.writeStrongBinder(eventMemory->asBinder());
+        remote()->transact(ON_SOUNDMODEL_EVENT,
+                           data,
+                           &reply);
+    }
+    virtual void onServiceStateChange(const sp<IMemory>& eventMemory)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISoundTriggerClient::getInterfaceDescriptor());
+        data.writeStrongBinder(eventMemory->asBinder());
+        remote()->transact(ON_SERVICE_STATE_CHANGE,
+                           data,
+                           &reply);
+    }
 };
 
 IMPLEMENT_META_INTERFACE(SoundTriggerClient,
@@ -65,6 +86,20 @@ status_t BnSoundTriggerClient::onTransact(
             onRecognitionEvent(eventMemory);
             return NO_ERROR;
         } break;
+        case ON_SOUNDMODEL_EVENT: {
+            CHECK_INTERFACE(ISoundTriggerClient, data, reply);
+            sp<IMemory> eventMemory = interface_cast<IMemory>(
+                data.readStrongBinder());
+            onSoundModelEvent(eventMemory);
+            return NO_ERROR;
+        } break;
+        case ON_SERVICE_STATE_CHANGE: {
+            CHECK_INTERFACE(ISoundTriggerClient, data, reply);
+            sp<IMemory> eventMemory = interface_cast<IMemory>(
+                data.readStrongBinder());
+            onServiceStateChange(eventMemory);
+            return NO_ERROR;
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }