Fix nonfunctional send-problem-report.

[dcpomatic.git] / src / lib / audio_filter.h

diff --git a/src/lib/audio_filter.h b/src/lib/audio_filter.h
index b44175cbcd78704d670ef9cbe2094adcb83f1faa..b7a675e6b85fa3472f9e6d9ffd2aaaed42fb6975 100644 (file)
--- a/src/lib/audio_filter.h
+++ b/src/lib/audio_filter.h
@@ -17,17 +17,22 @@
 
 */
 
+#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;
 
+/** 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) {
@@ -35,7 +40,9 @@ public:
                }
        }
 
-       boost::shared_ptr<AudioBuffers> run (boost::shared_ptr<AudioBuffers> in);
+       virtual ~AudioFilter ();
+
+       boost::shared_ptr<AudioBuffers> run (boost::shared_ptr<const AudioBuffers> in);
 
        void flush ();
 
@@ -43,9 +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;
 };
@@ -80,3 +87,5 @@ public:
         */
        BandPassAudioFilter (float transition_bandwidth, float lower, float higher);
 };
+
+#endif