Add audio buffer option to audio config

Author: oviano

dshowcapture.hpp

@@ -208,6 +208,9 @@ struct AudioConfig : Config {
 
 	/** Audio playback mode */
 	AudioMode mode = AudioMode::Capture;
+
+	/** Desired buffer */
+	int buffer = 0;
 };
 
 class DSHOWCAPTURE_EXPORT Device {

source/device.cpp

@@ -802,7 +802,7 @@ bool HDevice::ConnectFilters()
 				     std::string::npos);
 
 		if (!streamEngine && audioCapture != nullptr)
-			SetAudioBuffering(10);
+			SetAudioBuffering(audioConfig.buffer ? audioConfig.buffer : 10);
 
 		success = ConnectPins(PIN_CATEGORY_CAPTURE, MEDIATYPE_Audio,
 				      audioFilter, filter);