Rename setStreamOutput to invalidateStream

And simplify by removing the unused I/O handle parameter 'output'.

Change-Id: Ie9c4df17a7378066312d4ed8790fda7a9125c95e
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index db81ff0..92ee30e 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -1940,10 +1940,10 @@
     return NO_ERROR;
 }
 
-status_t AudioFlinger::setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output)
+status_t AudioFlinger::invalidateStream(audio_stream_type_t stream)
 {
     Mutex::Autolock _l(mLock);
-    ALOGV("setStreamOutput() stream %d to output %d", stream, output);
+    ALOGV("invalidateStream() stream %d", stream);
 
     for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
         PlaybackThread *thread = mPlaybackThreads.valueAt(i).get();
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 21d05d4..c2b516b 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -182,7 +182,7 @@
 
     virtual status_t closeInput(audio_io_handle_t input);
 
-    virtual status_t setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output);
+    virtual status_t invalidateStream(audio_stream_type_t stream);
 
     virtual status_t setVoiceVolume(float volume);
 
diff --git a/services/audioflinger/AudioPolicyService.cpp b/services/audioflinger/AudioPolicyService.cpp
index 9980344..41bd990 100644
--- a/services/audioflinger/AudioPolicyService.cpp
+++ b/services/audioflinger/AudioPolicyService.cpp
@@ -1598,15 +1598,14 @@
     return af->closeInput(input);
 }
 
-static int aps_set_stream_output(void *service __unused, audio_stream_type_t stream,
-                                     audio_io_handle_t output)
+static int aps_invalidate_stream(void *service __unused, audio_stream_type_t stream)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
         return PERMISSION_DENIED;
     }
 
-    return af->setStreamOutput(stream, output);
+    return af->invalidateStream(stream);
 }
 
 static int aps_move_effects(void *service __unused, int session,
@@ -1680,7 +1679,7 @@
         .open_input            = aps_open_input,
         .close_input           = aps_close_input,
         .set_stream_volume     = aps_set_stream_volume,
-        .set_stream_output     = aps_set_stream_output,
+        .invalidate_stream     = aps_invalidate_stream,
         .set_parameters        = aps_set_parameters,
         .get_parameters        = aps_get_parameters,
         .start_tone            = aps_start_tone,