Disable buffer allocation with CoreAudio capture

2020-11-24 14:44:13 -08:00
parent a913aa6ba8
commit ba39c622ef
1 changed files with 8 additions and 0 deletions
@@ -464,6 +464,14 @@ void CoreAudioCapture::open(const ALCchar *name)
    if(err != noErr)
        throw al::backend_exception{ALC_INVALID_VALUE, "Could not set capture callback: %u", err};

+    // Disable buffer allocation for capture
+    Uint32 flag{0};
+    err = AudioUnitSetProperty(mAudioUnit, kAudioUnitProperty_ShouldAllocateBuffer,
+        kAudioUnitScope_Output, 1, &flag, sizeof(flag));
+    if(err != noErr)
+        throw al::backend_exception{ALC_INVALID_VALUE,
+            "Could not disable buffer allocation property: %u", err};
+
    // Initialize the device
    err = AudioUnitInitialize(mAudioUnit);
    if(err != noErr)