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Add LEQ(m) when analysing audio (#1382).
[dcpomatic.git]
/
src
/
lib
/
audio_filter.h
diff --git
a/src/lib/audio_filter.h
b/src/lib/audio_filter.h
index 9fc69daadb23574158e6b298d7b0140a23071716..fb7b7b92ccb64283d7bc01235b35d486f0c5422b 100644
(file)
--- a/
src/lib/audio_filter.h
+++ b/
src/lib/audio_filter.h
@@
-1,33
+1,39
@@
/*
Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
/*
Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
-
This program
is distributed in the hope that it will be useful,
+
DCP-o-matic
is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
*/
-#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:
class AudioFilter
{
public:
- AudioFilter (float transition_bandwidth)
+ explicit AudioFilter (float transition_bandwidth)
+ : _ir (0)
{
_M = 4 / transition_bandwidth;
if (_M % 2) {
{
_M = 4 / transition_bandwidth;
if (_M % 2) {
@@
-35,7
+41,9
@@
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
+51,9
@@
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
+88,5
@@
public:
*/
BandPassAudioFilter (float transition_bandwidth, float lower, float higher);
};
*/
BandPassAudioFilter (float transition_bandwidth, float lower, float higher);
};
+
+#endif