commit decb6295141a9507886d7536569d17921941a0e6
author Mikhail Naganov <mnaganov@google.com> Wed Apr 10 16:49:02 2019 -0700
committer Mikhail Naganov <mnaganov@google.com> Mon Apr 22 11:01:51 2019 -0700
tree fa806e9a492432ee0566fca600abe79d06b19cc8
parent 8cd204d6cd66f581e10ce574ba72faf1ebf6b592

Add IAudioManager methods for tracking client recording activity

audio_unique_id_t IAudioManager::trackRecorder(IBinder token)
  - registers a client recorder withing Audio Service,
    returns a unique tracking recording ID (RIID);
    Audio Service tracks the lifetime of the recorder using
    the provided token.

oneway recorderEvent(int riid, int event)
  - updates the current state of the client;
    only "started" and "stoped" states are considered.

Bug: 123312504
Test: android.media.cts.AudioRecordingConfigurationTest
      AudioRecordTest#testAudioRecordInfoCallback
      MediaRecorderTest#testAudioRecordInfoCallback
      manual testing using Oboe and Solo test apps

Change-Id: Iddb1b91fff7127ab35ba1d33e3e6c32937ac3081

services/audiomanager/IAudioManager.cpp

diff --git a/services/audiomanager/IAudioManager.cpp b/services/audiomanager/IAudioManager.cpp
index b9b0706..f5d4826 100644
--- a/services/audiomanager/IAudioManager.cpp
+++ b/services/audiomanager/IAudioManager.cpp
@@ -98,6 +98,30 @@
         data.writeInt32((int32_t) piid);
         return remote()->transact(RELEASE_PLAYER, data, &reply, IBinder::FLAG_ONEWAY);
     }
+
+    virtual audio_unique_id_t trackRecorder(const sp<IBinder>& recorder) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
+        data.writeStrongBinder(recorder);
+        // get new RIId in reply
+        const status_t res = remote()->transact(TRACK_RECORDER, data, &reply, 0);
+        if (res != OK || reply.readExceptionCode() != 0) {
+            ALOGE("trackRecorder() failed, riid is %d", RECORD_RIID_INVALID);
+            return RECORD_RIID_INVALID;
+        } else {
+            const audio_unique_id_t riid = (audio_unique_id_t) reply.readInt32();
+            ALOGV("trackRecorder() returned riid %d", riid);
+            return riid;
+        }
+    }
+
+    virtual status_t recorderEvent(audio_unique_id_t riid, recorder_state_t event) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
+        data.writeInt32((int32_t) riid);
+        data.writeInt32((int32_t) event);
+        return remote()->transact(RECORDER_EVENT, data, &reply, IBinder::FLAG_ONEWAY);
+    }
 };
 
 IMPLEMENT_META_INTERFACE(AudioManager, "android.media.IAudioService");