91 lines
4.2 KiB
C++
91 lines
4.2 KiB
C++
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#pragma once
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#include "JACK/Client.H"
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#include <math.h>
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sample_t *buffer_alloc ( nframes_t size );
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void buffer_apply_gain ( sample_t *buf, nframes_t nframes, float g );
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void buffer_apply_gain_unaligned ( sample_t *buf, nframes_t nframes, float g );
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void buffer_apply_gain_buffer ( sample_t *buf, const sample_t *gainbuf, nframes_t nframes );
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void buffer_copy_and_apply_gain_buffer ( sample_t *dst, const sample_t *src, const sample_t *gainbuf, nframes_t nframes );
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void buffer_mix ( sample_t *dst, const sample_t *src, nframes_t nframes );
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void buffer_mix_with_gain ( sample_t *dst, const sample_t *src, nframes_t nframes, float g );
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void buffer_interleave_one_channel ( sample_t *dst, const sample_t *src, int channel, int channels, nframes_t nframes );
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void buffer_interleave_one_channel_and_mix ( sample_t *dst, const sample_t *src, int channel, int channels, nframes_t nframes );
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void buffer_deinterleave_one_channel ( sample_t *dst, const sample_t *src, int channel, int channels, nframes_t nframes );
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void buffer_interleaved_mix ( sample_t *__restrict__ dst, const sample_t * __restrict__ src, int dst_channel, int src_channel, int dst_channels, int src_channels, nframes_t nframes );
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void buffer_interleaved_copy ( sample_t *__restrict__ dst, const sample_t * __restrict__ src, int dst_channel, int src_channel, int dst_channels, int src_channels, nframes_t nframes );
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void buffer_fill_with_silence ( sample_t *buf, nframes_t nframes );
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bool buffer_is_digital_black ( const sample_t *buf, nframes_t nframes );
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float buffer_get_peak ( const sample_t *buf, nframes_t nframes );
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void buffer_copy ( sample_t *dst, const sample_t *src, nframes_t nframes );
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void buffer_copy_and_apply_gain ( sample_t *dst, const sample_t *src, nframes_t nframes, float gain );
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class Value_Smoothing_Filter
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{
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float w, g1, g2;
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float _cutoff;
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public:
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Value_Smoothing_Filter ( )
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{
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g1 = g2 = 0;
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_cutoff = 10.0f;
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}
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void cutoff ( float v ) { _cutoff = v; }
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void reset ( float v ) { g2 = g1 = v; }
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void sample_rate ( nframes_t v );
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inline bool target_reached ( float gt ) const { return gt == g2; }
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bool apply ( sample_t *dst, nframes_t nframes, float target );
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};
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static inline float interpolate_cubic ( const float fr, const float inm1, const float in, const float inp1, const float inp2)
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{
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return in + 0.5f * fr * (inp1 - inm1 +
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fr * (4.0f * inp1 + 2.0f * inm1 - 5.0f * in - inp2 +
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fr * (3.0f * (in - inp1) - inm1 + inp2)));
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}
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// from SWH plugins.
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// Convert a value in dB's to a coefficent
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#define DB_CO(g) ((g) > -90.0f ? powf(10.0f, (g) * 0.05f) : 0.0f)
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#define CO_DB(v) (20.0f * log10f(v))
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#define DEG2RAD 0.01745329251f
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#define ONEOVERSQRT2 0.70710678118f
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#ifndef likely
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#define likely(x) __builtin_expect(x,1)
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#endif
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#ifndef unlikely
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#define unlikely(x) __builtin_expect(x,0)
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#endif
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