X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_filter.h;h=640e910ca83445ff970d7fe3a766385c6c98ea02;hb=267e21bfb78593bcb87eb24ce01b88d0859566f7;hp=9fc69daadb23574158e6b298d7b0140a23071716;hpb=cc27c2716f755305d67f1e1ba828ecf37f8405dd;p=dcpomatic.git

diff --git a/src/lib/audio_filter.h b/src/lib/audio_filter.h
index 9fc69daad..640e910ca 100644
--- a/src/lib/audio_filter.h
+++ b/src/lib/audio_filter.h
@@ -17,11 +17,13 @@
 
 */
 
-#include <vector>
+#ifndef DCPOMATIC_AUDIO_FILTER_H
+#define DCPOMATIC_AUDIO_FILTER_H
+
 #include <boost/shared_ptr.hpp>
+#include <vector>
 
 class AudioBuffers;
-class audio_filter_impulse_kernel_test;
 struct audio_filter_impulse_input_test;
 
 class AudioFilter
@@ -35,7 +37,7 @@ public:
 		}
 	}
 
-	boost::shared_ptr<AudioBuffers> run (boost::shared_ptr<AudioBuffers> in);
+	boost::shared_ptr<AudioBuffers> run (boost::shared_ptr<const AudioBuffers> in);
 
 	void flush ();
 
@@ -80,3 +82,5 @@ public:
 	 */
 	BandPassAudioFilter (float transition_bandwidth, float lower, float higher);
 };
+
+#endif