X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_filter.h;h=b7a675e6b85fa3472f9e6d9ffd2aaaed42fb6975;hb=6cd300ca8513b360990360d2999bec3b8988fd97;hp=640e910ca83445ff970d7fe3a766385c6c98ea02;hpb=1dab4d3d084eda74612a3ebf0688ebc6fda7e78b;p=dcpomatic.git

diff --git a/src/lib/audio_filter.h b/src/lib/audio_filter.h
index 640e910ca..b7a675e6b 100644
--- a/src/lib/audio_filter.h
+++ b/src/lib/audio_filter.h
@@ -21,15 +21,18 @@
 #define DCPOMATIC_AUDIO_FILTER_H
 
 #include <boost/shared_ptr.hpp>
-#include <vector>
 
 class AudioBuffers;
 struct audio_filter_impulse_input_test;
 
+/** An audio filter which can take AudioBuffers and apply some filtering operation,
+ *  returning filtered samples
+ */
 class AudioFilter
 {
 public:
 	AudioFilter (float transition_bandwidth)
+		: _ir (0)
 	{
 		_M = 4 / transition_bandwidth;
 		if (_M % 2) {
@@ -37,6 +40,8 @@ public:
 		}
 	}
 
+	virtual ~AudioFilter ();
+
 	boost::shared_ptr<AudioBuffers> run (boost::shared_ptr<const AudioBuffers> in);
 
 	void flush ();
@@ -45,9 +50,9 @@ protected:
 	friend struct audio_filter_impulse_kernel_test;
 	friend struct audio_filter_impulse_input_test;
 
-	std::vector<float> sinc_blackman (float cutoff, bool invert) const;
+	float* sinc_blackman (float cutoff, bool invert) const;
 
-	std::vector<float> _ir;
+	float* _ir;
 	int _M;
 	boost::shared_ptr<AudioBuffers> _tail;
 };