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Comment.
[dcpomatic.git]
/
src
/
lib
/
audio_filter.h
diff --git
a/src/lib/audio_filter.h
b/src/lib/audio_filter.h
index 9fc69daadb23574158e6b298d7b0140a23071716..b7a675e6b85fa3472f9e6d9ffd2aaaed42fb6975 100644
(file)
--- a/
src/lib/audio_filter.h
+++ b/
src/lib/audio_filter.h
@@
-17,17
+17,22
@@
*/
*/
-#include <vector>
+#ifndef DCPOMATIC_AUDIO_FILTER_H
+#define DCPOMATIC_AUDIO_FILTER_H
+
#include <boost/shared_ptr.hpp>
class AudioBuffers;
#include <boost/shared_ptr.hpp>
class AudioBuffers;
-class audio_filter_impulse_kernel_test;
struct 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)
class AudioFilter
{
public:
AudioFilter (float transition_bandwidth)
+ : _ir (0)
{
_M = 4 / transition_bandwidth;
if (_M % 2) {
{
_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 ();
void flush ();
@@
-43,9
+50,9
@@
protected:
friend struct audio_filter_impulse_kernel_test;
friend struct 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;
};
int _M;
boost::shared_ptr<AudioBuffers> _tail;
};
@@
-80,3
+87,5
@@
public:
*/
BandPassAudioFilter (float transition_bandwidth, float lower, float higher);
};
*/
BandPassAudioFilter (float transition_bandwidth, float lower, float higher);
};
+
+#endif