*/
-#include <vector>
+#ifndef DCPOMATIC_AUDIO_FILTER_H
+#define DCPOMATIC_AUDIO_FILTER_H
+
#include <boost/shared_ptr.hpp>
class AudioBuffers;
-class audio_filter_impulse_kernel_test;
-class audio_filter_impulse_input_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) {
}
}
- 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 ();
protected:
- friend class audio_filter_impulse_kernel_test;
- friend class audio_filter_impulse_input_test;
+ 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;
};
*/
BandPassAudioFilter (float transition_bandwidth, float lower, float higher);
};
+
+#endif