1090 lines
34 KiB
C++
1090 lines
34 KiB
C++
/*
|
|
* Brickworks
|
|
*
|
|
* Copyright (C) 2023, 2024 Orastron Srl unipersonale
|
|
*
|
|
* Brickworks 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, version 3 of the License.
|
|
*
|
|
* Brickworks 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
|
|
* along with Brickworks. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* File author: Stefano D'Angelo
|
|
*/
|
|
|
|
/*!
|
|
* module_type {{{ dsp }}}
|
|
* version {{{ 1.1.1 }}}
|
|
* requires {{{
|
|
* bw_buf bw_common bw_delay bw_gain bw_math bw_one_pole
|
|
* }}}
|
|
* description {{{
|
|
* Comb filter / delay effect with feedforward and feedback paths.
|
|
*
|
|
* Essentially an implementation of the structure described in
|
|
*
|
|
* J. Dattorro, "Effect Design, Part 2: Delay-Line Modulation and Chorus",
|
|
* J. Audio Eng. Soc., vol. 45, no. 10, pp. 764-788, October 1997.
|
|
*
|
|
* Unlike in the original paper, the feedback signal is not subtracted but
|
|
* rather added to the input.
|
|
* }}}
|
|
* changelog {{{
|
|
* <ul>
|
|
* <li>Version <strong>1.1.1</strong>:
|
|
* <ul>
|
|
* <li>Added debugging check in <code>bw_comb_process_multi()</code> to
|
|
* ensure that buffers used for both input and output appear at the
|
|
* same channel indices.</li>
|
|
* </ul>
|
|
* </li>
|
|
* <li>Version <strong>1.1.0</strong>:
|
|
* <ul>
|
|
* <li>Now using <code>BW_NULL</code> and
|
|
* <code>BW_CXX_NO_ARRAY</code>.</li>
|
|
* </ul>
|
|
* </li>
|
|
* <li>Version <strong>1.0.0</strong>:
|
|
* <ul>
|
|
* <li>Added initial value argument in
|
|
* <code>bw_comb_reset_state()</code>.</li>
|
|
* <li>Added <code>bw_comb_reset_state_multi()</code> and updated C++
|
|
* API in this regard.</li>
|
|
* <li>Now <code>bw_comb_reset_state()</code> returns the initial
|
|
* output value.</li>
|
|
* <li>Added overloaded C++ <code>reset()</code> functions taking
|
|
* arrays as arguments.</li>
|
|
* <li>Now using <code>size_t</code> instead of
|
|
* <code>BW_SIZE_T</code>.</li>
|
|
* <li><code>bw_comb_process()</code> and
|
|
* <code>bw_comb_process_multi()</code> now use <code>size_t</code>
|
|
* to count samples and channels.</li>
|
|
* <li>Added more <code>const</code> and <code>BW_RESTRICT</code>
|
|
* specifiers to input arguments and implementation.</li>
|
|
* <li>Moved C++ code to C header.</li>
|
|
* <li>Added overloaded C++ <code>process()</code> function taking
|
|
* C-style arrays as arguments.</li>
|
|
* <li>Removed usage of reserved identifiers.</li>
|
|
* <li>Clearly specified parameter validity ranges.</li>
|
|
* <li>Added debugging code.</li>
|
|
* </ul>
|
|
* </li>
|
|
* <li>Version <strong>0.6.0</strong>:
|
|
* <ul>
|
|
* <li>Removed dependency on bw_config.</li>
|
|
* </ul>
|
|
* </li>
|
|
* <li>Version <strong>0.5.0</strong>:
|
|
* <ul>
|
|
* <li>Added <code>bw_comb_process_multi()</code>.</li>
|
|
* <li>Updated mem_req/set API.</li>
|
|
* <li>Added C++ wrapper.</li>
|
|
* </ul>
|
|
* </li>
|
|
* </ul>
|
|
* <li>Version <strong>0.4.0</strong>:
|
|
* <ul>
|
|
* <li>First release.</li>
|
|
* </ul>
|
|
* </li>
|
|
* </ul>
|
|
* }}}
|
|
*/
|
|
|
|
#ifndef BW_COMB_H
|
|
#define BW_COMB_H
|
|
|
|
#include <bw_common.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*! api {{{
|
|
* #### bw_comb_coeffs
|
|
* ```>>> */
|
|
typedef struct bw_comb_coeffs bw_comb_coeffs;
|
|
/*! <<<```
|
|
* Coefficients and related.
|
|
*
|
|
* #### bw_comb_state
|
|
* ```>>> */
|
|
typedef struct bw_comb_state bw_comb_state;
|
|
/*! <<<```
|
|
* Internal state and related.
|
|
*
|
|
* #### bw_comb_init()
|
|
* ```>>> */
|
|
static inline void bw_comb_init(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float max_delay);
|
|
/*! <<<```
|
|
* Initializes input parameter values in `coeffs` using `max_delay` (s) as
|
|
* the maximum delay time.
|
|
*
|
|
* `max_delay` must be finite and non-negative.
|
|
*
|
|
* #### bw_comb_set_sample_rate()
|
|
* ```>>> */
|
|
static inline void bw_comb_set_sample_rate(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float sample_rate);
|
|
/*! <<<```
|
|
* Sets the `sample_rate` (Hz) value in `coeffs`.
|
|
*
|
|
* #### bw_comb_mem_req()
|
|
* ```>>> */
|
|
static inline size_t bw_comb_mem_req(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs);
|
|
/*! <<<```
|
|
* Returns the size, in bytes, of contiguous memory to be supplied to
|
|
* `bw_comb_mem_set()` using `coeffs`.
|
|
*
|
|
* #### bw_comb_mem_set()
|
|
* ```>>> */
|
|
static inline void bw_comb_mem_set(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
void * BW_RESTRICT mem);
|
|
/*! <<<```
|
|
* Associates the contiguous memory block `mem` to the given `state` using
|
|
* `coeffs`.
|
|
*
|
|
* #### bw_comb_reset_coeffs()
|
|
* ```>>> */
|
|
static inline void bw_comb_reset_coeffs(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs);
|
|
/*! <<<```
|
|
* Resets coefficients in `coeffs` to assume their target values.
|
|
*
|
|
* #### bw_comb_reset_state()
|
|
* ```>>> */
|
|
static inline float bw_comb_reset_state(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
float x_0);
|
|
/*! <<<```
|
|
* Resets the given `state` to its initial values using the given `coeffs`
|
|
* and the initial input value `x_0`.
|
|
*
|
|
* Returns the corresponding initial output value.
|
|
*
|
|
* If parameter `coeff_fb` has value `-1.f` or `1.f`, then `x_0` must be
|
|
* `0.f`.
|
|
*
|
|
* #### bw_comb_reset_state_multi()
|
|
* ```>>> */
|
|
static inline void bw_comb_reset_state_multi(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT const * BW_RESTRICT state,
|
|
const float * x_0,
|
|
float * y_0,
|
|
size_t n_channels);
|
|
/*! <<<```
|
|
* Resets each of the `n_channels` `state`s to its initial values using the
|
|
* given `coeffs` and the corresponding initial input value in the `x_0`
|
|
* array.
|
|
*
|
|
* The corresponding initial output values are written into the `y_0` array,
|
|
* if not `BW_NULL`.
|
|
*
|
|
* If parameter `coeff_fb` has value `-1.f` or `1.f`, then `x_0` must only
|
|
* contain `0.f`.
|
|
*
|
|
* #### bw_comb_update_coeffs_ctrl()
|
|
* ```>>> */
|
|
static inline void bw_comb_update_coeffs_ctrl(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs);
|
|
/*! <<<```
|
|
* Triggers control-rate update of coefficients in `coeffs`.
|
|
*
|
|
* #### bw_comb_update_coeffs_audio()
|
|
* ```>>> */
|
|
static inline void bw_comb_update_coeffs_audio(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs);
|
|
/*! <<<```
|
|
* Triggers audio-rate update of coefficients in `coeffs`.
|
|
*
|
|
* #### bw_comb_process1()
|
|
* ```>>> */
|
|
static inline float bw_comb_process1(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
float x);
|
|
/*! <<<```
|
|
* Processes one input sample `x` using `coeffs`, while using and updating
|
|
* `state`. Returns the corresponding output sample.
|
|
*
|
|
* #### bw_comb_process()
|
|
* ```>>> */
|
|
static inline void bw_comb_process(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
const float * x,
|
|
float * y,
|
|
size_t n_samples);
|
|
/*! <<<```
|
|
* Processes the first `n_samples` of the input buffer `x` and fills the
|
|
* first `n_samples` of the output buffer `y`, while using and updating both
|
|
* `coeffs` and `state` (control and audio rate).
|
|
*
|
|
* #### bw_comb_process_multi()
|
|
* ```>>> */
|
|
static inline void bw_comb_process_multi(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT const * BW_RESTRICT state,
|
|
const float * const * x,
|
|
float * const * y,
|
|
size_t n_channels,
|
|
size_t n_samples);
|
|
/*! <<<```
|
|
* Processes the first `n_samples` of the `n_channels` input buffers `x` and
|
|
* fills the first `n_samples` of the `n_channels` output buffers `y`, while
|
|
* using and updating both the common `coeffs` and each of the `n_channels`
|
|
* `state`s (control and audio rate).
|
|
*
|
|
* #### bw_comb_set_delay_ff()
|
|
* ```>>> */
|
|
static inline void bw_comb_set_delay_ff(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value);
|
|
/*! <<<```
|
|
* Sets the feedforward delay time `value` (s) in `coeffs`.
|
|
*
|
|
* This parameter is internally limited to avoid buffer overflows.
|
|
*
|
|
* `value` must be finite.
|
|
*
|
|
* Default value: `0.f`.
|
|
*
|
|
* #### bw_comb_set_delay_fb()
|
|
* ```>>> */
|
|
static inline void bw_comb_set_delay_fb(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value);
|
|
/*! <<<```
|
|
* Sets the feedback delay time `value` (s) in `coeffs`.
|
|
*
|
|
* This parameter is internally limited to avoid buffer overflows.
|
|
*
|
|
* `value` must be finite.
|
|
*
|
|
* Default value: `0.f`.
|
|
*
|
|
* #### bw_comb_set_coeff_blend()
|
|
* ```>>> */
|
|
static inline void bw_comb_set_coeff_blend(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value);
|
|
/*! <<<```
|
|
* Sets the blend coefficient `value` in `coeffs`.
|
|
*
|
|
* `value` must be finite.
|
|
*
|
|
* Default value: `1.f`.
|
|
*
|
|
* #### bw_comb_set_coeff_ff()
|
|
* ```>>> */
|
|
static inline void bw_comb_set_coeff_ff(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value);
|
|
/*! <<<```
|
|
* Sets the feedforward coefficient `value` in `coeffs`.
|
|
*
|
|
* `value` must be finite.
|
|
*
|
|
* Default value: `0.f`.
|
|
*
|
|
* #### bw_comb_set_coeff_fb()
|
|
* ```>>> */
|
|
static inline void bw_comb_set_coeff_fb(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value);
|
|
/*! <<<```
|
|
* Sets the feedback coefficient `value` in `coeffs`.
|
|
*
|
|
* Valid range: [`-1.f`, `1.f`].
|
|
*
|
|
* Default value: `0.f`.
|
|
*
|
|
* #### bw_comb_coeffs_is_valid()
|
|
* ```>>> */
|
|
static inline char bw_comb_coeffs_is_valid(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs);
|
|
/*! <<<```
|
|
* Tries to determine whether `coeffs` is valid and returns non-`0` if it
|
|
* seems to be the case and `0` if it is certainly not. False positives are
|
|
* possible, false negatives are not.
|
|
*
|
|
* `coeffs` must at least point to a readable memory block of size greater
|
|
* than or equal to that of `bw_comb_coeffs`.
|
|
*
|
|
* #### bw_comb_state_is_valid()
|
|
* ```>>> */
|
|
static inline char bw_comb_state_is_valid(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
const bw_comb_state * BW_RESTRICT state);
|
|
/*! <<<```
|
|
* Tries to determine whether `state` is valid and returns non-`0` if it
|
|
* seems to be the case and `0` if it is certainly not. False positives are
|
|
* possible, false negatives are not.
|
|
*
|
|
* If `coeffs` is not `BW_NULL` extra cross-checks might be performed
|
|
* (`state` is supposed to be associated to `coeffs`).
|
|
*
|
|
* `state` must at least point to a readable memory block of size greater
|
|
* than or equal to that of `bw_comb_state`.
|
|
* }}} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/*** Implementation ***/
|
|
|
|
/* WARNING: This part of the file is not part of the public API. Its content may
|
|
* change at any time in future versions. Please, do not use it directly. */
|
|
|
|
#include <bw_delay.h>
|
|
#include <bw_gain.h>
|
|
#include <bw_one_pole.h>
|
|
#include <bw_math.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
enum bw_comb_coeffs_state {
|
|
bw_comb_coeffs_state_invalid,
|
|
bw_comb_coeffs_state_init,
|
|
bw_comb_coeffs_state_set_sample_rate,
|
|
bw_comb_coeffs_state_reset_coeffs
|
|
};
|
|
#endif
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
enum bw_comb_state_state {
|
|
bw_comb_state_state_invalid,
|
|
bw_comb_state_state_mem_set,
|
|
bw_comb_state_state_reset_state
|
|
};
|
|
#endif
|
|
|
|
struct bw_comb_coeffs {
|
|
#ifdef BW_DEBUG_DEEP
|
|
uint32_t hash;
|
|
enum bw_comb_coeffs_state state;
|
|
uint32_t reset_id;
|
|
#endif
|
|
|
|
// Sub-components
|
|
bw_delay_coeffs delay_coeffs;
|
|
bw_gain_coeffs blend_coeffs;
|
|
bw_gain_coeffs ff_coeffs;
|
|
bw_gain_coeffs fb_coeffs;
|
|
bw_one_pole_coeffs smooth_coeffs;
|
|
bw_one_pole_state smooth_delay_ff_state;
|
|
bw_one_pole_state smooth_delay_fb_state;
|
|
|
|
// Coefficients
|
|
float fs;
|
|
|
|
size_t dffi;
|
|
float dfff;
|
|
size_t dfbi;
|
|
float dfbf;
|
|
|
|
// Parameters
|
|
float delay_ff;
|
|
float delay_fb;
|
|
};
|
|
|
|
struct bw_comb_state {
|
|
#ifdef BW_DEBUG_DEEP
|
|
uint32_t hash;
|
|
enum bw_comb_state_state state;
|
|
uint32_t coeffs_reset_id;
|
|
#endif
|
|
|
|
// Sub-components
|
|
bw_delay_state delay_state;
|
|
};
|
|
|
|
static inline void bw_comb_init(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float max_delay) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT(bw_is_finite(max_delay));
|
|
BW_ASSERT(max_delay >= 0.f);
|
|
|
|
bw_delay_init(&coeffs->delay_coeffs, max_delay);
|
|
bw_gain_init(&coeffs->blend_coeffs);
|
|
bw_gain_init(&coeffs->ff_coeffs);
|
|
bw_gain_init(&coeffs->fb_coeffs);
|
|
bw_one_pole_init(&coeffs->smooth_coeffs);
|
|
bw_one_pole_set_tau(&coeffs->smooth_coeffs, 0.05f);
|
|
bw_one_pole_set_sticky_thresh(&coeffs->smooth_coeffs, 1e-6f);
|
|
bw_gain_set_gain_lin(&coeffs->ff_coeffs, 0.f);
|
|
bw_gain_set_gain_lin(&coeffs->fb_coeffs, 0.f);
|
|
coeffs->delay_ff = 0.f;
|
|
coeffs->delay_fb = 0.f;
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
coeffs->hash = bw_hash_sdbm("bw_comb_coeffs");
|
|
coeffs->state = bw_comb_coeffs_state_init;
|
|
coeffs->reset_id = coeffs->hash + 1;
|
|
#endif
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state == bw_comb_coeffs_state_init);
|
|
}
|
|
|
|
static inline void bw_comb_set_sample_rate(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float sample_rate) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
|
|
|
|
bw_delay_set_sample_rate(&coeffs->delay_coeffs, sample_rate);
|
|
bw_gain_set_sample_rate(&coeffs->blend_coeffs, sample_rate);
|
|
bw_gain_set_sample_rate(&coeffs->ff_coeffs, sample_rate);
|
|
bw_gain_set_sample_rate(&coeffs->fb_coeffs, sample_rate);
|
|
bw_one_pole_set_sample_rate(&coeffs->smooth_coeffs, sample_rate);
|
|
bw_one_pole_reset_coeffs(&coeffs->smooth_coeffs);
|
|
coeffs->fs = sample_rate;
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
coeffs->state = bw_comb_coeffs_state_set_sample_rate;
|
|
#endif
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state == bw_comb_coeffs_state_set_sample_rate);
|
|
}
|
|
|
|
static inline size_t bw_comb_mem_req(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_set_sample_rate);
|
|
|
|
return bw_delay_mem_req(&coeffs->delay_coeffs);
|
|
}
|
|
|
|
static inline void bw_comb_mem_set(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
void * BW_RESTRICT mem) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_set_sample_rate);
|
|
BW_ASSERT(state != BW_NULL);
|
|
BW_ASSERT(mem != BW_NULL);
|
|
|
|
bw_delay_mem_set(&coeffs->delay_coeffs, &state->delay_state, mem);
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
state->hash = bw_hash_sdbm("bw_comb_state");
|
|
state->state = bw_comb_state_state_mem_set;
|
|
#endif
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_set_sample_rate);
|
|
BW_ASSERT_DEEP(bw_comb_state_is_valid(coeffs, state));
|
|
BW_ASSERT_DEEP(state->state == bw_comb_state_state_mem_set);
|
|
}
|
|
|
|
static inline void bw_comb_do_update_coeffs(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
char force) {
|
|
float delay_ff_cur = bw_one_pole_get_y_z1(&coeffs->smooth_delay_ff_state);
|
|
float delay_fb_cur = bw_one_pole_get_y_z1(&coeffs->smooth_delay_fb_state);
|
|
if (force || delay_ff_cur != coeffs->delay_ff) {
|
|
delay_ff_cur = bw_one_pole_process1_sticky_abs(&coeffs->smooth_coeffs, &coeffs->smooth_delay_ff_state, coeffs->delay_ff);
|
|
const size_t len = bw_delay_get_length(&coeffs->delay_coeffs);
|
|
const float dff = bw_maxf(coeffs->fs * delay_ff_cur, 0.f);
|
|
float dffif;
|
|
bw_intfracf(dff, &dffif, &coeffs->dfff);
|
|
coeffs->dffi = (size_t)dffif;
|
|
if (coeffs->dffi >= len) {
|
|
coeffs->dffi = len;
|
|
coeffs->dfff = 0.f;
|
|
}
|
|
}
|
|
if (force || delay_fb_cur != coeffs->delay_fb) {
|
|
delay_fb_cur = bw_one_pole_process1_sticky_abs(&coeffs->smooth_coeffs, &coeffs->smooth_delay_fb_state, coeffs->delay_fb);
|
|
const size_t len = bw_delay_get_length(&coeffs->delay_coeffs);
|
|
const float dfb = bw_maxf(coeffs->fs * delay_fb_cur, 1.f) - 1.f;
|
|
float dfbif;
|
|
bw_intfracf(dfb, &dfbif, &coeffs->dfbf);
|
|
coeffs->dfbi = (size_t)dfbif;
|
|
if (coeffs->dfbi >= len) {
|
|
coeffs->dfbi = len;
|
|
coeffs->dfbf = 0.f;
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline void bw_comb_reset_coeffs(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_set_sample_rate);
|
|
|
|
bw_delay_reset_coeffs(&coeffs->delay_coeffs);
|
|
bw_gain_reset_coeffs(&coeffs->blend_coeffs);
|
|
bw_gain_reset_coeffs(&coeffs->ff_coeffs);
|
|
bw_gain_reset_coeffs(&coeffs->fb_coeffs);
|
|
bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_delay_ff_state, coeffs->delay_ff);
|
|
bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_delay_fb_state, coeffs->delay_fb);
|
|
bw_comb_do_update_coeffs(coeffs, 1);
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
coeffs->state = bw_comb_coeffs_state_reset_coeffs;
|
|
coeffs->reset_id++;
|
|
#endif
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state == bw_comb_coeffs_state_reset_coeffs);
|
|
}
|
|
|
|
static inline float bw_comb_reset_state(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
float x_0) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT(state != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_state_is_valid(coeffs, state));
|
|
BW_ASSERT_DEEP(state->state >= bw_comb_state_state_mem_set);
|
|
BW_ASSERT(bw_is_finite(x_0));
|
|
BW_ASSERT(bw_gain_get_gain_cur(&coeffs->fb_coeffs) == -1.f || bw_gain_get_gain_cur(&coeffs->fb_coeffs) == 1.f ? x_0 == 0.f : 1);
|
|
|
|
const float fb = bw_gain_get_gain_cur(&coeffs->fb_coeffs);
|
|
float y;
|
|
if (fb == -1.f || fb == 1.f) {
|
|
bw_delay_reset_state(&coeffs->delay_coeffs, &state->delay_state, 0.f);
|
|
y = 0.f;
|
|
} else {
|
|
const float v = x_0 / (1.f - fb);
|
|
bw_delay_reset_state(&coeffs->delay_coeffs, &state->delay_state, v);
|
|
y = (bw_gain_get_gain_cur(&coeffs->ff_coeffs) + bw_gain_get_gain_cur(&coeffs->blend_coeffs)) * v;
|
|
}
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
state->state = bw_comb_state_state_reset_state;
|
|
state->coeffs_reset_id = coeffs->reset_id;
|
|
#endif
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT_DEEP(bw_comb_state_is_valid(coeffs, state));
|
|
BW_ASSERT_DEEP(state->state >= bw_comb_state_state_reset_state);
|
|
BW_ASSERT(bw_is_finite(y));
|
|
|
|
return y;
|
|
}
|
|
|
|
static inline void bw_comb_reset_state_multi(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT const * BW_RESTRICT state,
|
|
const float * x_0,
|
|
float * y_0,
|
|
size_t n_channels) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT(state != BW_NULL);
|
|
#ifndef BW_NO_DEBUG
|
|
for (size_t i = 0; i < n_channels; i++)
|
|
for (size_t j = i + 1; j < n_channels; j++)
|
|
BW_ASSERT(state[i] != state[j]);
|
|
#endif
|
|
BW_ASSERT(x_0 != BW_NULL);
|
|
|
|
if (y_0 != BW_NULL)
|
|
for (size_t i = 0; i < n_channels; i++)
|
|
y_0[i] = bw_comb_reset_state(coeffs, state[i], x_0[i]);
|
|
else
|
|
for (size_t i = 0; i < n_channels; i++)
|
|
bw_comb_reset_state(coeffs, state[i], x_0[i]);
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT_DEEP(y_0 != BW_NULL ? bw_has_only_finite(y_0, n_channels) : 1);
|
|
}
|
|
|
|
static inline void bw_comb_update_coeffs_ctrl(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
|
|
bw_gain_update_coeffs_ctrl(&coeffs->blend_coeffs);
|
|
bw_gain_update_coeffs_ctrl(&coeffs->ff_coeffs);
|
|
bw_gain_update_coeffs_ctrl(&coeffs->fb_coeffs);
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
}
|
|
|
|
static inline void bw_comb_update_coeffs_audio(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
|
|
bw_gain_update_coeffs_audio(&coeffs->blend_coeffs);
|
|
bw_gain_update_coeffs_audio(&coeffs->ff_coeffs);
|
|
bw_gain_update_coeffs_audio(&coeffs->fb_coeffs);
|
|
bw_comb_do_update_coeffs(coeffs, 0);
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
}
|
|
|
|
static inline float bw_comb_process1(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
float x) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT(state != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_state_is_valid(coeffs, state));
|
|
BW_ASSERT_DEEP(state->state >= bw_comb_state_state_reset_state);
|
|
BW_ASSERT(bw_is_finite(x));
|
|
|
|
const float fb = bw_delay_read(&coeffs->delay_coeffs, &state->delay_state, coeffs->dfbi, coeffs->dfbf);
|
|
const float v = x + bw_gain_process1(&coeffs->fb_coeffs, fb);
|
|
bw_delay_write(&coeffs->delay_coeffs, &state->delay_state, v);
|
|
const float ff = bw_delay_read(&coeffs->delay_coeffs, &state->delay_state, coeffs->dffi, coeffs->dfff);
|
|
const float y = bw_gain_process1(&coeffs->blend_coeffs, v) + bw_gain_process1(&coeffs->ff_coeffs, ff);
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT_DEEP(bw_comb_state_is_valid(coeffs, state));
|
|
BW_ASSERT_DEEP(state->state >= bw_comb_state_state_reset_state);
|
|
BW_ASSERT(bw_is_finite(y));
|
|
|
|
return y;
|
|
}
|
|
|
|
static inline void bw_comb_process(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT state,
|
|
const float * x,
|
|
float * y,
|
|
size_t n_samples) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT(state != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_state_is_valid(coeffs, state));
|
|
BW_ASSERT_DEEP(state->state >= bw_comb_state_state_reset_state);
|
|
BW_ASSERT(x != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
|
|
BW_ASSERT(y != BW_NULL);
|
|
|
|
bw_comb_update_coeffs_ctrl(coeffs);
|
|
for (size_t i = 0; i < n_samples; i++) {
|
|
bw_comb_update_coeffs_audio(coeffs);
|
|
y[i] = bw_comb_process1(coeffs, state, x[i]);
|
|
}
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT_DEEP(bw_comb_state_is_valid(coeffs, state));
|
|
BW_ASSERT_DEEP(state->state >= bw_comb_state_state_reset_state);
|
|
BW_ASSERT_DEEP(bw_has_only_finite(y, n_samples));
|
|
}
|
|
|
|
static inline void bw_comb_process_multi(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
bw_comb_state * BW_RESTRICT const * BW_RESTRICT state,
|
|
const float * const * x,
|
|
float * const * y,
|
|
size_t n_channels,
|
|
size_t n_samples) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
BW_ASSERT(state != BW_NULL);
|
|
#ifndef BW_NO_DEBUG
|
|
for (size_t i = 0; i < n_channels; i++)
|
|
for (size_t j = i + 1; j < n_channels; j++)
|
|
BW_ASSERT(state[i] != state[j]);
|
|
#endif
|
|
BW_ASSERT(x != BW_NULL);
|
|
BW_ASSERT(y != BW_NULL);
|
|
#ifndef BW_NO_DEBUG
|
|
for (size_t i = 0; i < n_channels; i++)
|
|
for (size_t j = i + 1; j < n_channels; j++)
|
|
BW_ASSERT(y[i] != y[j]);
|
|
for (size_t i = 0; i < n_channels; i++)
|
|
for (size_t j = 0; j < n_channels; j++)
|
|
BW_ASSERT(i == j || x[i] != y[j]);
|
|
#endif
|
|
|
|
bw_comb_update_coeffs_ctrl(coeffs);
|
|
for (size_t i = 0; i < n_samples; i++) {
|
|
bw_comb_update_coeffs_audio(coeffs);
|
|
for (size_t j = 0; j < n_channels; j++)
|
|
y[j][i] = bw_comb_process1(coeffs, state[j], x[j][i]);
|
|
}
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_reset_coeffs);
|
|
}
|
|
|
|
static inline void bw_comb_set_delay_ff(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
BW_ASSERT(bw_is_finite(value));
|
|
|
|
coeffs->delay_ff = value;
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
}
|
|
|
|
static inline void bw_comb_set_delay_fb(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
BW_ASSERT(bw_is_finite(value));
|
|
|
|
coeffs->delay_fb = value;
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
}
|
|
|
|
static inline void bw_comb_set_coeff_blend(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
BW_ASSERT(bw_is_finite(value));
|
|
|
|
bw_gain_set_gain_lin(&coeffs->blend_coeffs, value);
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
}
|
|
|
|
static inline void bw_comb_set_coeff_ff(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
BW_ASSERT(bw_is_finite(value));
|
|
|
|
bw_gain_set_gain_lin(&coeffs->ff_coeffs, value);
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
}
|
|
|
|
static inline void bw_comb_set_coeff_fb(
|
|
bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
float value) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
BW_ASSERT(bw_is_finite(value));
|
|
BW_ASSERT(value >= -1.f && value <= 1.f);
|
|
|
|
bw_gain_set_gain_lin(&coeffs->fb_coeffs, value);
|
|
|
|
BW_ASSERT_DEEP(bw_comb_coeffs_is_valid(coeffs));
|
|
BW_ASSERT_DEEP(coeffs->state >= bw_comb_coeffs_state_init);
|
|
}
|
|
|
|
static inline char bw_comb_coeffs_is_valid(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs) {
|
|
BW_ASSERT(coeffs != BW_NULL);
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
if (coeffs->hash != bw_hash_sdbm("bw_comb_coeffs"))
|
|
return 0;
|
|
if (coeffs->state < bw_comb_coeffs_state_init || coeffs->state > bw_comb_coeffs_state_reset_coeffs)
|
|
return 0;
|
|
#endif
|
|
|
|
if (!bw_is_finite(coeffs->delay_ff))
|
|
return 0;
|
|
if (!bw_is_finite(coeffs->delay_fb))
|
|
return 0;
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
if (coeffs->state >= bw_comb_coeffs_state_set_sample_rate && (!bw_is_finite(coeffs->fs) || coeffs->fs <= 0.f))
|
|
return 0;
|
|
#endif
|
|
|
|
if (!bw_delay_coeffs_is_valid(&coeffs->delay_coeffs)
|
|
|| !bw_one_pole_coeffs_is_valid(&coeffs->smooth_coeffs))
|
|
return 0;
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
if (coeffs->state >= bw_comb_coeffs_state_reset_coeffs) {
|
|
const size_t len = bw_delay_get_length(&coeffs->delay_coeffs);
|
|
|
|
if (!bw_is_finite(coeffs->dfff) || coeffs->dfff < 0.f || coeffs->dfff >= 1.f)
|
|
return 0;
|
|
if (coeffs->dffi + coeffs->dfff > len)
|
|
return 0;
|
|
|
|
if (!bw_is_finite(coeffs->dfbf) || coeffs->dfbf < 0.f || coeffs->dfbf >= 1.f)
|
|
return 0;
|
|
if (coeffs->dfbi + coeffs->dfbf > len)
|
|
return 0;
|
|
|
|
if (!bw_one_pole_state_is_valid(&coeffs->smooth_coeffs, &coeffs->smooth_delay_ff_state)
|
|
|| !bw_one_pole_state_is_valid(&coeffs->smooth_coeffs, &coeffs->smooth_delay_fb_state))
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
return bw_gain_coeffs_is_valid(&coeffs->blend_coeffs)
|
|
&& bw_gain_coeffs_is_valid(&coeffs->ff_coeffs)
|
|
&& bw_gain_coeffs_is_valid(&coeffs->fb_coeffs);
|
|
}
|
|
|
|
static inline char bw_comb_state_is_valid(
|
|
const bw_comb_coeffs * BW_RESTRICT coeffs,
|
|
const bw_comb_state * BW_RESTRICT state) {
|
|
BW_ASSERT(state != BW_NULL);
|
|
|
|
#ifdef BW_DEBUG_DEEP
|
|
if (state->hash != bw_hash_sdbm("bw_comb_state"))
|
|
return 0;
|
|
if (state->state < bw_comb_state_state_mem_set || state->state > bw_comb_state_state_reset_state)
|
|
return 0;
|
|
|
|
if (state->state >= bw_comb_state_state_reset_state && coeffs != BW_NULL && coeffs->reset_id != state->coeffs_reset_id)
|
|
return 0;
|
|
#endif
|
|
|
|
return bw_delay_state_is_valid(coeffs ? &coeffs->delay_coeffs : BW_NULL, &state->delay_state);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
|
|
#ifndef BW_CXX_NO_ARRAY
|
|
# include <array>
|
|
#endif
|
|
|
|
namespace Brickworks {
|
|
|
|
/*** Public C++ API ***/
|
|
|
|
/*! api_cpp {{{
|
|
* ##### Brickworks::Comb
|
|
* ```>>> */
|
|
template<size_t N_CHANNELS>
|
|
class Comb {
|
|
public:
|
|
Comb(
|
|
float maxDelay = 1.f);
|
|
|
|
~Comb();
|
|
|
|
void setSampleRate(
|
|
float sampleRate);
|
|
|
|
void reset(
|
|
float x0 = 0.f,
|
|
float * BW_RESTRICT y0 = nullptr);
|
|
|
|
#ifndef BW_CXX_NO_ARRAY
|
|
void reset(
|
|
float x0,
|
|
std::array<float, N_CHANNELS> * BW_RESTRICT y0);
|
|
#endif
|
|
|
|
void reset(
|
|
const float * x0,
|
|
float * y0 = nullptr);
|
|
|
|
#ifndef BW_CXX_NO_ARRAY
|
|
void reset(
|
|
std::array<float, N_CHANNELS> x0,
|
|
std::array<float, N_CHANNELS> * BW_RESTRICT y0 = nullptr);
|
|
#endif
|
|
|
|
void process(
|
|
const float * const * x,
|
|
float * const * y,
|
|
size_t nSamples);
|
|
|
|
#ifndef BW_CXX_NO_ARRAY
|
|
void process(
|
|
std::array<const float *, N_CHANNELS> x,
|
|
std::array<float *, N_CHANNELS> y,
|
|
size_t nSamples);
|
|
#endif
|
|
|
|
void setDelayFF(
|
|
float value);
|
|
|
|
void setDelayFB(
|
|
float value);
|
|
|
|
void setCoeffBlend(
|
|
float value);
|
|
|
|
void setCoeffFF(
|
|
float value);
|
|
|
|
void setCoeffFB(
|
|
float value);
|
|
/*! <<<...
|
|
* }
|
|
* ```
|
|
* }}} */
|
|
|
|
/*** Implementation ***/
|
|
|
|
/* WARNING: This part of the file is not part of the public API. Its content may
|
|
* change at any time in future versions. Please, do not use it directly. */
|
|
|
|
private:
|
|
bw_comb_coeffs coeffs;
|
|
bw_comb_state states[N_CHANNELS];
|
|
bw_comb_state * BW_RESTRICT statesP[N_CHANNELS];
|
|
void * BW_RESTRICT mem;
|
|
};
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline Comb<N_CHANNELS>::Comb(
|
|
float maxDelay) {
|
|
bw_comb_init(&coeffs, maxDelay);
|
|
for (size_t i = 0; i < N_CHANNELS; i++)
|
|
statesP[i] = states + i;
|
|
mem = nullptr;
|
|
}
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline Comb<N_CHANNELS>::~Comb() {
|
|
if (mem != nullptr)
|
|
operator delete(mem);
|
|
}
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::setSampleRate(
|
|
float sampleRate) {
|
|
bw_comb_set_sample_rate(&coeffs, sampleRate);
|
|
size_t req = bw_comb_mem_req(&coeffs);
|
|
if (mem != nullptr)
|
|
operator delete(mem);
|
|
mem = operator new(req * N_CHANNELS);
|
|
void *m = mem;
|
|
for (size_t i = 0; i < N_CHANNELS; i++, m = static_cast<char *>(m) + req)
|
|
bw_comb_mem_set(&coeffs, states + i, m);
|
|
}
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::reset(
|
|
float x0,
|
|
float * BW_RESTRICT y0) {
|
|
bw_comb_reset_coeffs(&coeffs);
|
|
if (y0 != nullptr)
|
|
for (size_t i = 0; i < N_CHANNELS; i++)
|
|
y0[i] = bw_comb_reset_state(&coeffs, states + i, x0);
|
|
else
|
|
for (size_t i = 0; i < N_CHANNELS; i++)
|
|
bw_comb_reset_state(&coeffs, states + i, x0);
|
|
}
|
|
|
|
#ifndef BW_CXX_NO_ARRAY
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::reset(
|
|
float x0,
|
|
std::array<float, N_CHANNELS> * BW_RESTRICT y0) {
|
|
reset(x0, y0 != nullptr ? y0->data() : nullptr);
|
|
}
|
|
#endif
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::reset(
|
|
const float * x0,
|
|
float * y0) {
|
|
bw_comb_reset_coeffs(&coeffs);
|
|
bw_comb_reset_state_multi(&coeffs, statesP, x0, y0, N_CHANNELS);
|
|
}
|
|
|
|
#ifndef BW_CXX_NO_ARRAY
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::reset(
|
|
std::array<float, N_CHANNELS> x0,
|
|
std::array<float, N_CHANNELS> * BW_RESTRICT y0) {
|
|
reset(x0.data(), y0 != nullptr ? y0->data() : nullptr);
|
|
}
|
|
#endif
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::process(
|
|
const float * const * x,
|
|
float * const * y,
|
|
size_t nSamples) {
|
|
bw_comb_process_multi(&coeffs, statesP, x, y, N_CHANNELS, nSamples);
|
|
}
|
|
|
|
#ifndef BW_CXX_NO_ARRAY
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::process(
|
|
std::array<const float *, N_CHANNELS> x,
|
|
std::array<float *, N_CHANNELS> y,
|
|
size_t nSamples) {
|
|
process(x.data(), y.data(), nSamples);
|
|
}
|
|
#endif
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::setDelayFF(
|
|
float value) {
|
|
bw_comb_set_delay_ff(&coeffs, value);
|
|
}
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::setDelayFB(
|
|
float value) {
|
|
bw_comb_set_delay_fb(&coeffs, value);
|
|
}
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::setCoeffBlend(
|
|
float value) {
|
|
bw_comb_set_coeff_blend(&coeffs, value);
|
|
}
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::setCoeffFF(
|
|
float value) {
|
|
bw_comb_set_coeff_ff(&coeffs, value);
|
|
}
|
|
|
|
template<size_t N_CHANNELS>
|
|
inline void Comb<N_CHANNELS>::setCoeffFB(
|
|
float value) {
|
|
bw_comb_set_coeff_fb(&coeffs, value);
|
|
}
|
|
|
|
}
|
|
#endif
|
|
|
|
#endif
|