diff --git a/examples/synth/src/bw_example_synth.c b/examples/synth/src/bw_example_synth.c index 37202a9..bafbf87 100644 --- a/examples/synth/src/bw_example_synth.c +++ b/examples/synth/src/bw_example_synth.c @@ -26,8 +26,9 @@ #endif #include -#include #include +#include +#include #include #include #include @@ -57,12 +58,14 @@ enum { p_n }; -#define BUFFER_SIZE 128 +//#define BUFFER_SIZE 128 struct _bw_example_synth { // Sub-components bw_phase_gen_coeffs phase_gen_coeffs; bw_phase_gen_state phase_gen_state; + bw_osc_pulse_coeffs osc_pulse_coeffs; + bw_osc_pulse_state osc_pulse_state; bw_noise_gen_coeffs noise_gen_coeffs; bw_svf_coeffs svf_coeffs; bw_svf_state svf_state; @@ -88,7 +91,7 @@ struct _bw_example_synth { float level; // Buffers - float buf[BUFFER_SIZE]; + //float buf[BUFFER_SIZE]; }; bw_example_synth bw_example_synth_new() { @@ -97,6 +100,7 @@ bw_example_synth bw_example_synth_new() { return NULL; bw_phase_gen_init(&instance->phase_gen_coeffs); + bw_osc_pulse_init(&instance->osc_pulse_coeffs); bw_noise_gen_init(&instance->noise_gen_coeffs, &instance->rand_state); bw_phase_gen_init(&instance->a440_phase_gen_coeffs); bw_svf_init(&instance->svf_coeffs); @@ -126,6 +130,7 @@ void bw_example_synth_free(bw_example_synth instance) { void bw_example_synth_set_sample_rate(bw_example_synth instance, float sample_rate) { bw_phase_gen_set_sample_rate(&instance->phase_gen_coeffs, sample_rate); + bw_osc_pulse_set_sample_rate(&instance->osc_pulse_coeffs, sample_rate); bw_noise_gen_set_sample_rate(&instance->noise_gen_coeffs, sample_rate); bw_phase_gen_set_sample_rate(&instance->a440_phase_gen_coeffs, sample_rate); bw_svf_set_sample_rate(&instance->svf_coeffs, sample_rate); @@ -140,21 +145,19 @@ void bw_example_synth_set_sample_rate(bw_example_synth instance, float sample_ra void bw_example_synth_reset(bw_example_synth instance) { bw_phase_gen_reset_coeffs(&instance->phase_gen_coeffs); - bw_phase_gen_reset_state(&instance->phase_gen_coeffs, &instance->phase_gen_state); + bw_phase_gen_reset_state(&instance->phase_gen_coeffs, &instance->phase_gen_state, 0.f); + bw_osc_pulse_reset_coeffs(&instance->osc_pulse_coeffs); + bw_osc_pulse_reset_state(&instance->osc_pulse_coeffs, &instance->osc_pulse_state); bw_phase_gen_reset_coeffs(&instance->a440_phase_gen_coeffs); - bw_phase_gen_reset_state(&instance->a440_phase_gen_coeffs, &instance->a440_phase_gen_state); + bw_phase_gen_reset_state(&instance->a440_phase_gen_coeffs, &instance->a440_phase_gen_state, 0.f); bw_svf_reset_coeffs(&instance->svf_coeffs); bw_svf_reset_state(&instance->svf_coeffs, &instance->svf_state); bw_vol_reset_coeffs(&instance->vol_coeffs); bw_env_follow_reset_coeffs(&instance->env_follow_coeffs); bw_env_follow_reset_state(&instance->env_follow_coeffs, &instance->env_follow_state); /* - bw_osc_pulse_reset(&instance->osc_pulse); bw_osc_filt_reset(&instance->osc_filt); - bw_svf_reset(&instance->svf); bw_env_gen_reset(&instance->env_gen); - bw_vol_reset(&instance->vol); - bw_env_follow_reset(&instance->env_follow); */ instance->note = -1; } @@ -168,13 +171,25 @@ void bw_example_synth_process(bw_example_synth instance, const float** x, float* } else ; //bw_env_gen_set_gate(&instance->env_gen, 0); - - //bw_phase_gen_process(&instance->phase_gen_coeffs, &instance->phase_gen_state, NULL, y[0], instance->buf, n_samples); - for (int i = 0; i < n_samples; i++) - y[0][i] = 0.f; - if (instance->note != -1) - bw_noise_gen_process(&instance->noise_gen_coeffs, y[0], n_samples); + if (instance->note != -1) { + bw_phase_gen_update_coeffs_ctrl(&instance->phase_gen_coeffs); + bw_osc_pulse_update_coeffs_ctrl(&instance->osc_pulse_coeffs); + for (int i = 0; i < n_samples; i++) { + float phase, phase_inc; + bw_phase_gen_update_coeffs_audio(&instance->phase_gen_coeffs); + bw_phase_gen_process1(&instance->phase_gen_coeffs, &instance->phase_gen_state, &phase, &phase_inc); + bw_osc_pulse_update_coeffs_audio(&instance->osc_pulse_coeffs); + y[0][i] = bw_osc_pulse_process1_antialias(&instance->osc_pulse_coeffs, &instance->osc_pulse_state, phase, phase_inc); + } + } else { + bw_osc_pulse_reset_state(&instance->osc_pulse_coeffs, &instance->osc_pulse_state); // FIXME + bw_phase_gen_process(&instance->phase_gen_coeffs, &instance->phase_gen_state, NULL, NULL, NULL, n_samples); + for (int i = 0; i < n_samples; i++) + y[0][i] = 0.f; + } + + //bw_noise_gen_process(&instance->noise_gen_coeffs, y[0], n_samples); bw_svf_process(&instance->svf_coeffs, &instance->svf_state, y[0], y[0], NULL, NULL, n_samples); @@ -217,6 +232,9 @@ void bw_example_synth_set_parameter(bw_example_synth instance, int index, float case p_portamento: bw_phase_gen_set_portamento_tau(&instance->phase_gen_coeffs, value); break; + case p_pulse_width: + bw_osc_pulse_set_pulse_width(&instance->osc_pulse_coeffs, value); + break; case p_cutoff: bw_svf_set_cutoff(&instance->svf_coeffs, 20.f + (20e3f - 20.f) * value * value * value); break; @@ -224,9 +242,7 @@ void bw_example_synth_set_parameter(bw_example_synth instance, int index, float bw_svf_set_Q(&instance->svf_coeffs, 0.5f + 9.5f * value); break; /* - case p_pulse_width: - bw_osc_pulse_set_pulse_width(&instance->osc_pulse, value); - break; + case p_attack: bw_env_gen_set_attack(&instance->env_gen, value); break; diff --git a/include/bw_osc_pulse.h b/include/bw_osc_pulse.h index 75f5a40..ef43b7a 100644 --- a/include/bw_osc_pulse.h +++ b/include/bw_osc_pulse.h @@ -29,7 +29,7 @@ *
    *
  • Version 0.2.0: *
      - *
    • Refactored API to avoid dynamic memory allocation.
      • + *
    • Refactored API.
      • *
    *
    • *
  • Version 0.1.0: @@ -49,41 +49,49 @@ extern "C" { #endif /*! api {{{ - * #### bw_osc_pulse + * #### bw_osc_pulse_coeffs * ```>>> */ -typedef struct _bw_osc_pulse bw_osc_pulse; +typedef struct _bw_osc_pulse_coeffs bw_osc_pulse_coeffs; /*! <<<``` - * Instance object. + * Coefficients. + * + * ### bw_one_pole_state * >>> */ - -/*! ... +typedef struct _bw_osc_pulse_state bw_osc_pulse_state; +/*! <<<``` + * State. + * * #### bw_osc_pulse_init() * ```>>> */ -void bw_osc_pulse_init(bw_osc_pulse *instance); +static inline void bw_osc_pulse_init(bw_osc_pulse_coeffs *BW_RESTRICT coeffs); /*! <<<``` - * Initializes the `instance` object. - * >>> */ - -/*! ... + * Initializes the `coeffs`. + * * #### bw_osc_pulse_set_sample_rate() * ```>>> */ -void bw_osc_pulse_set_sample_rate(bw_osc_pulse *instance, float sample_rate); +static inline void bw_osc_pulse_set_sample_rate(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, float sample_rate); /*! <<<``` - * Sets the `sample_rate` (Hz) value for the given `instance`. - * >>> */ - -/*! ... - * #### bw_osc_pulse_reset() + * Sets the `sample_rate` (Hz) value for the given `coeffs`. + * + * #### bw_osc_pulse_reset_state() * ```>>> */ -void bw_osc_pulse_reset(bw_osc_pulse *instance); +static inline void bw_osc_pulse_reset_state(const bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state); /*! <<<``` * Resets the given `instance` to its initial state. * >>> */ +static inline void bw_osc_pulse_reset_coeffs(bw_osc_pulse_coeffs *BW_RESTRICT coeffs); + +static inline void bw_osc_pulse_update_coeffs_ctrl(bw_osc_pulse_coeffs *BW_RESTRICT coeffs); +static inline void bw_osc_pulse_update_coeffs_audio(bw_osc_pulse_coeffs *BW_RESTRICT coeffs); + +static inline float bw_osc_pulse_process1(const bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state, float x); +static inline float bw_osc_pulse_process1_antialias(const bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state, float x, float x_phase_inc); + /*! ... * #### bw_osc_pulse_process() * ```>>> */ -void bw_osc_pulse_process(bw_osc_pulse *instance, const float *x, const float *x_phase_inc, float* y, int n_samples); +static inline void bw_osc_pulse_process(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state, const float *x, const float *x_phase_inc, float *y, int n_samples); /*! <<<``` * Lets the given `instance` process `n_samples` samples from the input * buffer `x` containing the normalized phase signal and fills the @@ -96,7 +104,7 @@ void bw_osc_pulse_process(bw_osc_pulse *instance, const float *x, const float *x /*! ... * #### bw_osc_pulse_set_antialiasing() * ```>>> */ -void bw_osc_pulse_set_antialiasing(bw_osc_pulse *instance, char value); +static inline void bw_osc_pulse_set_antialiasing(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, char value); /*! <<<``` * Sets whether the antialiasing is on (`value` non-`0`) or off (`0`) for the * given `instance`. @@ -107,7 +115,7 @@ void bw_osc_pulse_set_antialiasing(bw_osc_pulse *instance, char value); /*! ... * #### bw_osc_pulse_set_pulse_width() * ```>>> */ -void bw_osc_pulse_set_pulse_width(bw_osc_pulse *instance, float value); +static inline void bw_osc_pulse_set_pulse_width(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, float value); /*! <<<``` * Sets the pulse width (actually, the duty cycle) to `value` (range * [`0.f`, `1.f`]) for the given `instance`. @@ -115,22 +123,110 @@ void bw_osc_pulse_set_pulse_width(bw_osc_pulse *instance, float value); * Default value: `0.5f`. * }}} */ -/* WARNING: the internal definition of this struct is not part of the public - * API. Its content may change at any time in future versions. Please, do not - * access its members directly. */ -struct _bw_osc_pulse { - // Coefficients - float smooth_mA1; +/*** 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 +#include + +struct _bw_osc_pulse_coeffs { + // Sub-components + bw_one_pole_coeffs smooth_coeffs; + bw_one_pole_state smooth_state; // Parameters - char first_run; - char antialiasing; - float pulse_width; - - // State - float pw_z1; + char antialiasing; + float pulse_width; }; +struct _bw_osc_pulse_state { + // empty, but we keep for potential forward API compatibility + char unused; +}; + +static inline void bw_osc_pulse_init(bw_osc_pulse_coeffs *BW_RESTRICT coeffs) { + bw_one_pole_init(&coeffs->smooth_coeffs); + bw_one_pole_set_tau(&coeffs->smooth_coeffs, 0.005f); + coeffs->antialiasing = 0; + coeffs->pulse_width = 0.5f; +} + +static inline void bw_osc_pulse_set_sample_rate(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, float sample_rate) { + bw_one_pole_set_sample_rate(&coeffs->smooth_coeffs, sample_rate); + bw_one_pole_reset_coeffs(&coeffs->smooth_coeffs); +} + +static inline void bw_osc_pulse_reset_coeffs(bw_osc_pulse_coeffs *BW_RESTRICT coeffs) { + bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->pulse_width); +} + +static inline void bw_osc_pulse_reset_state(const bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state) { +} + +static inline void bw_osc_pulse_update_coeffs_ctrl(bw_osc_pulse_coeffs *BW_RESTRICT coeffs) { +} + +static inline void bw_osc_pulse_update_coeffs_audio(bw_osc_pulse_coeffs *BW_RESTRICT coeffs) { + bw_one_pole_process1(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->pulse_width); +} + +static inline float bw_osc_pulse_process1(const bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state, float x) { + const float pw = bw_one_pole_get_y_z1(&coeffs->smooth_state); + return bw_signf(pw - x); +} + +// PolyBLEP residual based on Parzen window (4th-order B-spline), one-sided (x in [0, 2]) +static inline float _bw_osc_pulse_blep_diff(float x) { + return x < 1.f + ? x * ((0.25f * x - 0.6666666666666666f) * x * x + 1.333333333333333f) - 1.f + : x * (x * ((0.6666666666666666f - 0.08333333333333333f * x) * x - 2.f) + 2.666666666666667f) - 1.333333333333333f; +} + +static inline float bw_osc_pulse_process1_antialias(const bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state, float x, float x_phase_inc) { + const float pw = bw_one_pole_get_y_z1(&coeffs->smooth_state); + const float pw_m_phase = pw - x; + float v = bw_copysignf(1.f, pw_m_phase); // pw = phase case should be properly compensated by the AA + if (x_phase_inc != 0.f) { + const float phase_inc_2 = x_phase_inc + x_phase_inc; + const float phase_inc_rcp = bw_rcpf_2(x_phase_inc); + const float phase_2 = 0.5f * v + 0.5f - pw_m_phase; + const float s_1_m_phase = 1.f - x; + const float s_1_m_phase_2 = 1.f - phase_2; + if (s_1_m_phase < phase_inc_2) + v -= _bw_osc_pulse_blep_diff(s_1_m_phase * phase_inc_rcp); + if (s_1_m_phase_2 < phase_inc_2) + v += _bw_osc_pulse_blep_diff(s_1_m_phase_2 * phase_inc_rcp); + if (x < phase_inc_2) + v += _bw_osc_pulse_blep_diff(x * phase_inc_rcp); + if (phase_2 < phase_inc_2) + v -= _bw_osc_pulse_blep_diff(phase_2 * phase_inc_rcp); + } + return v; +} + +static inline void bw_osc_pulse_process(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, bw_osc_pulse_state *BW_RESTRICT state, const float *x, const float *x_phase_inc, float *y, int n_samples) { + if (coeffs->antialiasing) + for (int i = 0; i < n_samples; i++) { + bw_osc_pulse_update_coeffs_audio(coeffs); + y[i] = bw_osc_pulse_process1_antialias(coeffs, state, x[i], x_phase_inc[i]); + } + else + for (int i = 0; i < n_samples; i++) { + bw_osc_pulse_update_coeffs_audio(coeffs); + y[i] = bw_osc_pulse_process1(coeffs, state, x[i]); + } +} + +static inline void bw_osc_pulse_set_antialiasing(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, char value) { + coeffs->antialiasing = value; +} + +static inline void bw_osc_pulse_set_pulse_width(bw_osc_pulse_coeffs *BW_RESTRICT coeffs, float value) { + coeffs->pulse_width = value; +} + #ifdef __cplusplus } #endif diff --git a/include/bw_phase_gen.h b/include/bw_phase_gen.h index 8bf3e6b..0a2ad01 100644 --- a/include/bw_phase_gen.h +++ b/include/bw_phase_gen.h @@ -78,7 +78,7 @@ static inline void bw_phase_gen_set_sample_rate(bw_phase_gen_coeffs *BW_RESTRICT * * #### bw_phase_gen_reset() * ```>>> */ -static inline void bw_phase_gen_reset_state(const bw_phase_gen_coeffs *BW_RESTRICT coeffs, bw_phase_gen_state *BW_RESTRICT state); +static inline void bw_phase_gen_reset_state(const bw_phase_gen_coeffs *BW_RESTRICT coeffs, bw_phase_gen_state *BW_RESTRICT state, float phase_0); /*! <<<``` * Resets the given `state` to the initial state using the given `coeffs`. * >>> */ @@ -177,8 +177,8 @@ static inline void bw_phase_gen_reset_coeffs(bw_phase_gen_coeffs *BW_RESTRICT co bw_one_pole_reset_state(&coeffs->portamento_coeffs, &coeffs->portamento_state, coeffs->portamento_target); } -static inline void bw_phase_gen_reset_state(const bw_phase_gen_coeffs *BW_RESTRICT coeffs, bw_phase_gen_state *BW_RESTRICT state) { - state->phase = 0.f; +static inline void bw_phase_gen_reset_state(const bw_phase_gen_coeffs *BW_RESTRICT coeffs, bw_phase_gen_state *BW_RESTRICT state, float phase_0) { + state->phase = phase_0; } static inline void bw_phase_gen_update_coeffs_ctrl(bw_phase_gen_coeffs *BW_RESTRICT coeffs) { @@ -207,30 +207,60 @@ static inline void bw_phase_gen_process1_mod(const bw_phase_gen_coeffs *BW_RESTR static inline void bw_phase_gen_process(bw_phase_gen_coeffs *BW_RESTRICT coeffs, bw_phase_gen_state *BW_RESTRICT state, const float *x_mod, float* y, float *y_phase_inc, int n_samples) { bw_phase_gen_update_coeffs_ctrl(coeffs); - if (x_mod != NULL) { - if (y_phase_inc != NULL) - for (int i = 0; i < n_samples; i++) { - bw_phase_gen_update_coeffs_audio(coeffs); - bw_phase_gen_process1_mod(coeffs, state, x_mod[i], y + i, y_phase_inc + i); - } - else - for (int i = 0; i < n_samples; i++) { - bw_phase_gen_update_coeffs_audio(coeffs); - float v_phase_inc; - bw_phase_gen_process1_mod(coeffs, state, x_mod[i], y + i, &v_phase_inc); - } + if (y != NULL) { + if (x_mod != NULL) { + if (y_phase_inc != NULL) + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + bw_phase_gen_process1_mod(coeffs, state, x_mod[i], y + i, y_phase_inc + i); + } + else + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + float v_phase_inc; + bw_phase_gen_process1_mod(coeffs, state, x_mod[i], y + i, &v_phase_inc); + } + } else { + if (y_phase_inc != NULL) + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + bw_phase_gen_process1(coeffs, state, y + i, y_phase_inc + i); + } + else + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + float v_phase_inc; + bw_phase_gen_process1(coeffs, state, y + i, &v_phase_inc); + } + } } else { - if (y_phase_inc != NULL) - for (int i = 0; i < n_samples; i++) { - bw_phase_gen_update_coeffs_audio(coeffs); - bw_phase_gen_process1(coeffs, state, y + i, y_phase_inc + i); - } - else - for (int i = 0; i < n_samples; i++) { - bw_phase_gen_update_coeffs_audio(coeffs); - float v_phase_inc; - bw_phase_gen_process1(coeffs, state, y + i, &v_phase_inc); - } + if (x_mod != NULL) { + if (y_phase_inc != NULL) + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + float v; + bw_phase_gen_process1_mod(coeffs, state, x_mod[i], &v, y_phase_inc + i); + } + else + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + float v, v_phase_inc; + bw_phase_gen_process1_mod(coeffs, state, x_mod[i], &v, &v_phase_inc); + } + } else { + if (y_phase_inc != NULL) + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + float v; + bw_phase_gen_process1(coeffs, state, &v, y_phase_inc + i); + } + else + for (int i = 0; i < n_samples; i++) { + bw_phase_gen_update_coeffs_audio(coeffs); + float v, v_phase_inc; + bw_phase_gen_process1(coeffs, state, &v, &v_phase_inc); + } + } } } diff --git a/src/bw_osc_pulse.c b/src/bw_osc_pulse.c deleted file mode 100644 index dfc02a3..0000000 --- a/src/bw_osc_pulse.c +++ /dev/null @@ -1,93 +0,0 @@ -/* - * Brickworks - * - * Copyright (C) 2022 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 - * - * File author: Stefano D'Angelo - */ - -#include - -#include -#include - -void bw_osc_pulse_init(bw_osc_pulse *instance) { - instance->antialiasing = 0; - instance->pulse_width = 0.5f; -} - -void bw_osc_pulse_set_sample_rate(bw_osc_pulse *instance, float sample_rate) { - instance->smooth_mA1 = bw_inline_one_pole_get_mA1(sample_rate, 0.005f); -} - -void bw_osc_pulse_reset(bw_osc_pulse *instance) { - instance->first_run = 1; -} - -// PolyBLEP residual based on Parzen window (4th-order B-spline), one-sided (x in [0, 2]) -static inline float blep_diff(float x) { - return x < 1.f - ? x * ((0.25f * x - 0.6666666666666666f) * x * x + 1.333333333333333f) - 1.f - : x * (x * ((0.6666666666666666f - 0.08333333333333333f * x) * x - 2.0f) + 2.666666666666667f) - 1.333333333333333f; -} - -void bw_osc_pulse_process(bw_osc_pulse *instance, const float *x, const float *x_phase_inc, float* y, int n_samples) { - if (instance->first_run) { - instance->pw_z1 = instance->pulse_width; - instance->first_run = 0; - } - - if (instance->antialiasing) { - for (int i = 0; i < n_samples; i++) { - const float pw = bw_inline_one_pole(instance->pulse_width, instance->pw_z1, instance->smooth_mA1); - instance->pw_z1 = pw; - - const float pw_m_phase = pw - x[i]; - float v = bw_copysignf(1.f, pw_m_phase); // pw = phase case should be properly compensated by the AA - - if (x_phase_inc[i] != 0.f) { - const float phase_inc_2 = x_phase_inc[i] + x_phase_inc[i]; - const float phase_inc_rcp = bw_rcpf_2(x_phase_inc[i]); - const float phase_2 = 0.5f * v + 0.5f - pw_m_phase; - const float s_1_m_phase = 1.f - x[i]; - const float s_1_m_phase_2 = 1.f - phase_2; - if (s_1_m_phase < phase_inc_2) - v -= blep_diff(s_1_m_phase * phase_inc_rcp); - if (s_1_m_phase_2 < phase_inc_2) - v += blep_diff(s_1_m_phase_2 * phase_inc_rcp); - if (x[i] < phase_inc_2) - v += blep_diff(x[i] * phase_inc_rcp); - if (phase_2 < phase_inc_2) - v -= blep_diff(phase_2 * phase_inc_rcp); - } - - y[i] = v; - } - } else { - for (int i = 0; i < n_samples; i++) { - const float pw = bw_inline_one_pole(instance->pulse_width, instance->pw_z1, instance->smooth_mA1); - instance->pw_z1 = pw; - - y[i] = bw_signf(pw - x[i]); - } - } -} - -void bw_osc_pulse_set_antialiasing(bw_osc_pulse *instance, char value) { - instance->antialiasing = value; -} - -void bw_osc_pulse_set_pulse_width(bw_osc_pulse *instance, float value) { - instance->pulse_width = value; -}