diff --git a/services/audioflinger/ServiceUtilities.cpp b/services/audioflinger/ServiceUtilities.cpp
index d15bd04..9ee513b 100644
--- a/services/audioflinger/ServiceUtilities.cpp
+++ b/services/audioflinger/ServiceUtilities.cpp
@@ -34,6 +34,15 @@
     return ok;
 }
 
+bool captureAudioOutputAllowed() {
+    if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true;
+    static const String16 sCaptureAudioOutput("android.permission.CAPTURE_AUDIO_OUTPUT");
+    // don't use PermissionCache; this is not a system permission
+    bool ok = checkCallingPermission(sCaptureAudioOutput);
+    if (!ok) ALOGE("Request requires android.permission.CAPTURE_AUDIO_OUTPUT");
+    return ok;
+}
+
 bool settingsAllowed() {
     if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true;
     static const String16 sAudioSettings("android.permission.MODIFY_AUDIO_SETTINGS");