+++ /dev/null
-#ifndef _STEREOCOMPRESSOR_H
-#define _STEREOCOMPRESSOR_H 1
-
-#include <stddef.h>
-// A simple compressor based on absolute values, with independent
-// attack/release times. There is no sidechain or lookahead, but the
-// peak value is shared between both channels.
-//
-// The compressor was originally written by, and is copyrighted by, Rune Holm.
-// It has been adapted and relicensed under GPLv3 (or, at your option,
-// any later version) for Nageru, so that its license matches the rest of the code.
-
-class StereoCompressor {
-public:
- StereoCompressor(float sample_rate)
- : sample_rate(sample_rate) {
- reset();
- }
-
- void reset() {
- peak_level = compr_level = 0.1f;
- scalefactor = 0.0f;
- }
-
- // Process <num_samples> interleaved stereo data in-place.
- // Attack and release times are in seconds.
- void process(float *buf, size_t num_samples, float threshold, float ratio,
- float attack_time, float release_time, float makeup_gain);
-
- // Last level estimated (after attack/decay applied).
- float get_level() { return compr_level; }
-
- // Last attenuation factor applied, e.g. if 5x compression is currently applied,
- // this number will be 0.2.
- float get_attenuation() { return scalefactor; }
-
-private:
- float sample_rate;
- float peak_level;
- float compr_level;
- float scalefactor;
-};
-
-#endif /* !defined(_STEREOCOMPRESSOR_H) */