Add support for querying if a stream is active remotely

Bug 7485803

Change-Id: I0744374f130fd2dd0714102354cffed2fa915361

2 files changed, 30 insertions, 1 deletions

diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index 028e4a3..693df60 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -731,6 +731,16 @@ status_t AudioSystem::isStreamActive(audio_stream_type_t stream, bool* state, ui
     return NO_ERROR;
 }
 
+status_t AudioSystem::isStreamActiveRemotely(audio_stream_type_t stream, bool* state,
+        uint32_t inPastMs)
+{
+    const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+    if (aps == 0) return PERMISSION_DENIED;
+    if (state == NULL) return BAD_VALUE;
+    *state = aps->isStreamActiveRemotely(stream, inPastMs);
+    return NO_ERROR;
+}
+
 status_t AudioSystem::isSourceActive(audio_source_t stream, bool* state)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
diff --git a/media/libmedia/IAudioPolicyService.cpp b/media/libmedia/IAudioPolicyService.cpp
index 769deae..386c351 100644
--- a/media/libmedia/IAudioPolicyService.cpp
+++ b/media/libmedia/IAudioPolicyService.cpp
@@ -55,7 +55,8 @@ enum {
     IS_SOURCE_ACTIVE,
     GET_DEVICES_FOR_STREAM,
     QUERY_DEFAULT_PRE_PROCESSING,
-    SET_EFFECT_ENABLED
+    SET_EFFECT_ENABLED,
+    IS_STREAM_ACTIVE_REMOTELY
 };
 
 class BpAudioPolicyService : public BpInterface<IAudioPolicyService>
@@ -330,6 +331,16 @@ public:
         return reply.readInt32();
     }
 
+    virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs) const
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
+        data.writeInt32((int32_t) stream);
+        data.writeInt32(inPastMs);
+        remote()->transact(IS_STREAM_ACTIVE_REMOTELY, data, &reply);
+        return reply.readInt32();
+    }
+
     virtual bool isSourceActive(audio_source_t source) const
     {
         Parcel data, reply;
@@ -605,6 +616,14 @@ status_t BnAudioPolicyService::onTransact(
             return NO_ERROR;
         } break;
 
+        case IS_STREAM_ACTIVE_REMOTELY: {
+            CHECK_INTERFACE(IAudioPolicyService, data, reply);
+            audio_stream_type_t stream = (audio_stream_type_t) data.readInt32();
+            uint32_t inPastMs = (uint32_t)data.readInt32();
+            reply->writeInt32( isStreamActiveRemotely((audio_stream_type_t) stream, inPastMs) );
+            return NO_ERROR;
+        } break;
+
         case IS_SOURCE_ACTIVE: {
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
             audio_source_t source = (audio_source_t) data.readInt32();