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finalized bw_osc_tri + fixed bw_osc_pulse

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This commit is contained in:
Stefano D'Angelo 2023-09-20 16:52:06 +02:00
parent 6d94c36677
commit aefd36aac1
2 changed files with 297 additions and 70 deletions
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5
include/bw_osc_pulse.h
View File

@ -371,7 +371,8 @@ static inline float bw_osc_pulse_process1(
}
// 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) {
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;
@ -393,7 +394,7 @@ static inline float bw_osc_pulse_process1_antialias(
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
const float a_inc = bw_absf(x_inc);
if (x_inc > 1e-6f) {
if (a_inc > 1e-6f) {
const float phase_inc_2 = a_inc + a_inc;
const float phase_inc_rcp = bw_rcpf(a_inc);
const float phase_2 = 0.5f * v + 0.5f - pw_m_phase;

332
include/bw_osc_tri.h
View File

@ -48,6 +48,8 @@
* <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 validity ranges for audio-rate signals.</li>
* <li>Added debugging code.</li>
* </ul>
* </li>
* <li>Version <strong>0.6.0</strong>:
@ -57,7 +59,7 @@
* </li>
* <li>Version <strong>0.5.0</strong>:
* <ul>
* <li>Added <code>bw_osc_pulse_process_multi()</code>.</li>
* <li>Added <code>bw_osc_tri_process_multi()</code>.</li>
* <li>Fixed typo in <code>bw_osc_tri_process1\*()</code>
* documentation.</li>
* <li>Added C++ wrapper.</li>
@ -100,38 +102,50 @@ typedef struct bw_osc_tri_coeffs bw_osc_tri_coeffs;
*
* #### bw_osc_tri_init()
* ```>>> */
static inline void bw_osc_tri_init(bw_osc_tri_coeffs *BW_RESTRICT coeffs);
static inline void bw_osc_tri_init(
bw_osc_tri_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Initializes input parameter values in `coeffs`.
*
* #### bw_osc_tri_set_sample_rate()
* ```>>> */
static inline void bw_osc_tri_set_sample_rate(bw_osc_tri_coeffs *BW_RESTRICT coeffs, float sample_rate);
static inline void bw_osc_tri_set_sample_rate(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float sample_rate);
/*! <<<```
* Sets the `sample_rate` (Hz) value in `coeffs`.
*
* #### bw_osc_tri_reset_coeffs()
* ```>>> */
static inline void bw_osc_tri_reset_coeffs(bw_osc_tri_coeffs *BW_RESTRICT coeffs);
static inline void bw_osc_tri_reset_coeffs(
bw_osc_tri_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Resets coefficients in `coeffs` to assume their target values.
*
* #### bw_osc_tri_update_coeffs_ctrl()
* ```>>> */
static inline void bw_osc_tri_update_coeffs_ctrl(bw_osc_tri_coeffs *BW_RESTRICT coeffs);
static inline void bw_osc_tri_update_coeffs_ctrl(
bw_osc_tri_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers control-rate update of coefficients in `coeffs`.
*
* #### bw_osc_tri_update_coeffs_audio()
* ```>>> */
static inline void bw_osc_tri_update_coeffs_audio(bw_osc_tri_coeffs *BW_RESTRICT coeffs);
static inline void bw_osc_tri_update_coeffs_audio(
bw_osc_tri_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers audio-rate update of coefficients in `coeffs`.
*
* #### bw_osc_tri_process1\*()
* ```>>> */
static inline float bw_osc_tri_process1(const bw_osc_tri_coeffs *BW_RESTRICT coeffs, float x);
static inline float bw_osc_tri_process1_antialias(const bw_osc_tri_coeffs *BW_RESTRICT coeffs, float x, float x_phase_inc);
static inline float bw_osc_tri_process1(
const bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float x);
static inline float bw_osc_tri_process1_antialias(
const bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float x,
float x_inc);
/*! <<<```
* These function process one input sample `x`, representing the normalized
* phase, using `coeffs`. They return the corresponding output sample.
@ -140,35 +154,62 @@ static inline float bw_osc_tri_process1_antialias(const bw_osc_tri_coeffs *BW_RE
* * `bw_osc_tri_process1()` assumes that antialiasing is disabled;
* * `bw_osc_tri_process1_antialias()` assumes that antialiasing is enabled
* and requires the corresponding phase increment value to be passed via
* `x_phase_inc`.
* `x_inc`.
*
* Whether antialiasing is enabled or not is unchecked even for debugging
* purposes.
*
* `x` must be in [`0.f`, `1.f`).
*
* `x_inc` must be in [`-0.5f`, `0.5f`].
*
* #### bw_osc_tri_process()
* ```>>> */
static inline void bw_osc_tri_process(bw_osc_tri_coeffs *BW_RESTRICT coeffs, const float *x, const float *x_phase_inc, float *y, size_t n_samples);
static inline void bw_osc_tri_process(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
const float * x,
const float * x_inc,
float * y,
size_t n_samples);
/*! <<<```
* Processes the first `n_samples` of the input buffer `x`, containing the
* normalized phase signal, and fills the first `n_samples` of the output
* buffer `y`, while using and updating `coeffs`.
*
* If antialiasing is enabled, `x_phase_inc` must contain phase increment
* values, otherwise it is ignored and can be `NULL`.
* If antialiasing is enabled, `x_inc` must contain phase increment values,
* otherwise it is ignored and can be `NULL`.
*
* All samples in `x` must be in [`0.f`, `1.f`).
*
* All samples is `x_inc`, if not ignored, must be in [`-0.5f`, `0.5f`].
*
* #### bw_osc_tri_process_multi()
* ```>>> */
static inline void bw_osc_tri_process_multi(bw_osc_tri_coeffs *BW_RESTRICT coeffs, const float * const *x, const float * const *x_phase_inc, float * const *y, size_t n_channels, size_t n_samples);
static inline void bw_osc_tri_process_multi(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
const float * const * x,
const float * const * x_inc,
float * const * y,
size_t n_channels,
size_t n_samples);
/*! <<<```
* Processes the first `n_samples` of the `n_channels` input buffers `x`,
* containing the normalized phase signals, and fills the first `n_samples`
* of the `n_channels` output buffers `y`, while using and updating the
* common `coeffs` (control and audio rate).
*
* If antialiasing is enabled, `x_phase_inc` must contain `n_channels`
* buffers of phase increment values, otherwise it is ignored and can be
* `NULL`.
* If antialiasing is enabled, `x_inc` must contain `n_channels` buffers of
* phase increment values, otherwise it is ignored and can be `NULL`.
*
* All samples in `x` must be in [`0.f`, `1.f`).
*
* All samples is `x_inc`, if not ignored, must be in [`-0.5f`, `0.5f`].
*
* #### bw_osc_tri_set_antialiasing()
* ```>>> */
static inline void bw_osc_tri_set_antialiasing(bw_osc_tri_coeffs *BW_RESTRICT coeffs, char value);
static inline void bw_osc_tri_set_antialiasing(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
char value);
/*! <<<```
* Sets whether the antialiasing is on (`value` non-`0`) or off (`0`) in
* `coeffs`.
@ -177,12 +218,27 @@ static inline void bw_osc_tri_set_antialiasing(bw_osc_tri_coeffs *BW_RESTRICT co
*
* #### bw_osc_tri_set_slope()
* ```>>> */
static inline void bw_osc_tri_set_slope(bw_osc_tri_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_osc_tri_set_slope(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the slope (increasing time over period) to `value` (range [`0.001f`,
* `0.999f`]) in `coeffs`.
* Sets the slope (increasing time over period) to `value` in `coeffs`.
*
* Valid range: [`0.001f`, `0.999f`].
*
* Default value: `0.5f`.
*
* #### bw_osc_tri_coeffs_is_valid()
* ```>>> */
static inline char bw_osc_tri_coeffs_is_valid(
const bw_osc_tri_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_osc_tri_coeffs`.
* }}} */
#ifdef __cplusplus
@ -201,7 +257,21 @@ static inline void bw_osc_tri_set_slope(bw_osc_tri_coeffs *BW_RESTRICT coeffs, f
extern "C" {
#endif
#ifdef BW_DEBUG_DEEP
enum bw_osc_tri_coeffs_state {
bw_osc_tri_coeffs_state_invalid,
bw_osc_tri_coeffs_state_init,
bw_osc_tri_coeffs_state_set_sample_rate,
bw_osc_tri_coeffs_state_reset_coeffs
};
#endif
struct bw_osc_tri_coeffs {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
enum bw_osc_tri_coeffs_state state;
#endif
// Sub-components
bw_one_pole_coeffs smooth_coeffs;
bw_one_pole_state smooth_state;
@ -211,52 +281,126 @@ struct bw_osc_tri_coeffs {
float slope;
};
static inline void bw_osc_tri_init(bw_osc_tri_coeffs *BW_RESTRICT coeffs) {
static inline void bw_osc_tri_init(
bw_osc_tri_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
bw_one_pole_init(&coeffs->smooth_coeffs);
bw_one_pole_set_tau(&coeffs->smooth_coeffs, 0.005f);
coeffs->antialiasing = 0;
coeffs->slope = 0.5f;
#ifdef BW_DEBUG_DEEP
coeffs->hash = bw_hash_sdbm("bw_osc_tri_coeffs");
coeffs->state = bw_osc_tri_coeffs_state_init;
#endif
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_osc_tri_coeffs_state_init);
}
static inline void bw_osc_tri_set_sample_rate(bw_osc_tri_coeffs *BW_RESTRICT coeffs, float sample_rate) {
static inline void bw_osc_tri_set_sample_rate(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float sample_rate) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_init);
BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
bw_one_pole_set_sample_rate(&coeffs->smooth_coeffs, sample_rate);
bw_one_pole_reset_coeffs(&coeffs->smooth_coeffs);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_osc_tri_coeffs_state_set_sample_rate;
#endif
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_osc_tri_coeffs_state_set_sample_rate);
}
static inline void bw_osc_tri_reset_coeffs(bw_osc_tri_coeffs *BW_RESTRICT coeffs) {
static inline void bw_osc_tri_reset_coeffs(
bw_osc_tri_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_set_sample_rate);
bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->slope);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_osc_tri_coeffs_state_reset_coeffs;
#endif
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_osc_tri_coeffs_state_reset_coeffs);
}
static inline void bw_osc_tri_update_coeffs_ctrl(bw_osc_tri_coeffs *BW_RESTRICT coeffs) {
static inline void bw_osc_tri_update_coeffs_ctrl(
bw_osc_tri_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
(void)coeffs;
}
static inline void bw_osc_tri_update_coeffs_audio(bw_osc_tri_coeffs *BW_RESTRICT coeffs) {
static inline void bw_osc_tri_update_coeffs_audio(
bw_osc_tri_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
bw_one_pole_process1(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->slope);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
}
static inline float bw_osc_tri_process1(const bw_osc_tri_coeffs *BW_RESTRICT coeffs, float x) {
const float slope = bw_one_pole_get_y_z1(&coeffs->smooth_state); // output should always be in bounds given good input
static inline float bw_osc_tri_process1(
const bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float x) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
BW_ASSERT(bw_is_finite(x));
BW_ASSERT(x >= 0.f && x < 1.f);
const float slope = bw_one_pole_get_y_z1(&coeffs->smooth_state);
const float phase_d = x + x;
return x < slope ? (phase_d - slope) * bw_rcpf(slope) : (1.f + slope - phase_d) * bw_rcpf(1.f - slope);
const float y = x < slope ? (phase_d - slope) * bw_rcpf(slope) : (1.f + slope - phase_d) * bw_rcpf(1.f - slope);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
BW_ASSERT(bw_is_finite(y));
return y;
}
// PolyBLAMP residual based on Parzen window (4th-order B-spline), one-sided (x in [0, 2])
static inline float bw_osc_tri_blamp_diff(float x) {
static inline float bw_osc_tri_blamp_diff(
float x) {
return x < 1.f
? x * (x * ((0.05f * x - 0.1666666666666667f) * x * x + 0.6666666666666666f) - 1.0f) + 0.4666666666666667f
: x * (x * (x * ((0.1666666666666667f - 0.01666666666666667f * x) * x - 0.6666666666666666f) + 1.333333333333333f) - 1.333333333333333f) + 0.5333333333333333f;
}
static inline float bw_osc_tri_process1_antialias(const bw_osc_tri_coeffs *BW_RESTRICT coeffs, float x, float x_phase_inc) {
const float slope = bw_one_pole_get_y_z1(&coeffs->smooth_state); // output should always be in bounds given good input
static inline float bw_osc_tri_process1_antialias(
const bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float x,
float x_inc) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
BW_ASSERT(bw_is_finite(x));
BW_ASSERT(x >= 0.f && x < 1.f);
BW_ASSERT(bw_is_finite(x_inc));
BW_ASSERT(x_inc >= -0.5f && x_inc <= 0.5f);
const float slope = bw_one_pole_get_y_z1(&coeffs->smooth_state);
const float s_1_p_pw = 1.f + slope;
const float s_1_m_pw = 1.f - slope;
const float phase_d = x + x;
float v = x < slope ? (phase_d - slope) * bw_rcpf(slope) : (s_1_p_pw - phase_d) * bw_rcpf(s_1_m_pw);
if (x_phase_inc != 0.f) {
const float phase_inc_2 = x_phase_inc + x_phase_inc;
const float phase_inc_rcp = bw_rcpf(x_phase_inc);
const float a_inc = bw_absf(x_inc);
if (a_inc > 1e-6f) {
const float phase_inc_2 = a_inc + a_inc;
const float phase_inc_rcp = bw_rcpf(a_inc);
const float pw_m_phase = slope - x;
const float phase_2 = bw_copysignf(0.5f, pw_m_phase) + 0.5f - pw_m_phase;
const float s_1_m_phase = 1.f - x;
@ -270,30 +414,65 @@ static inline float bw_osc_tri_process1_antialias(const bw_osc_tri_coeffs *BW_RE
blamp -= bw_osc_tri_blamp_diff(x * phase_inc_rcp);
if (phase_2 < phase_inc_2)
blamp += bw_osc_tri_blamp_diff(phase_2 * phase_inc_rcp);
v -= bw_rcpf(slope * s_1_m_pw) * bw_absf(x_phase_inc) * blamp;
v -= bw_rcpf(slope * s_1_m_pw) * a_inc * blamp;
}
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
BW_ASSERT(bw_is_finite(v));
return v;
}
static inline void bw_osc_tri_process(bw_osc_tri_coeffs *BW_RESTRICT coeffs, const float *x, const float *x_phase_inc, float *y, size_t n_samples) {
static inline void bw_osc_tri_process(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
const float * x,
const float * x_inc,
float * y,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
BW_ASSERT(coeffs->antialiasing ? x_inc != NULL : 1);
BW_ASSERT_DEEP(coeffs->antialiasing ? bw_has_only_finite(x_inc, n_samples) : 1);
BW_ASSERT(y != NULL);
if (coeffs->antialiasing)
for (size_t i = 0; i < n_samples; i++) {
bw_osc_tri_update_coeffs_audio(coeffs);
y[i] = bw_osc_tri_process1_antialias(coeffs, x[i], x_phase_inc[i]);
y[i] = bw_osc_tri_process1_antialias(coeffs, x[i], x_inc[i]);
}
else
for (size_t i = 0; i < n_samples; i++) {
bw_osc_tri_update_coeffs_audio(coeffs);
y[i] = bw_osc_tri_process1(coeffs, x[i]);
}
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_has_only_finite(y, n_samples));
}
static inline void bw_osc_tri_process_multi(bw_osc_tri_coeffs *BW_RESTRICT coeffs, const float * const *x, const float * const *x_phase_inc, float * const *y, size_t n_channels, size_t n_samples) {
static inline void bw_osc_tri_process_multi(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
const float * const * x,
const float * const * x_inc,
float * const * y,
size_t n_channels,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
BW_ASSERT(x != NULL);
BW_ASSERT(y != NULL);
if (coeffs->antialiasing)
for (size_t i = 0; i < n_samples; i++) {
bw_osc_tri_update_coeffs_audio(coeffs);
for (size_t j = 0; j < n_channels; j++)
y[j][i] = bw_osc_tri_process1_antialias(coeffs, x[j][i], x_phase_inc[j][i]);
y[j][i] = bw_osc_tri_process1_antialias(coeffs, x[j][i], x_inc[j][i]);
}
else
for (size_t i = 0; i < n_samples; i++) {
@ -301,14 +480,51 @@ static inline void bw_osc_tri_process_multi(bw_osc_tri_coeffs *BW_RESTRICT coeff
for (size_t j = 0; j < n_channels; j++)
y[j][i] = bw_osc_tri_process1(coeffs, x[j][i]);
}
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_reset_coeffs);
}
static inline void bw_osc_tri_set_antialiasing(bw_osc_tri_coeffs *BW_RESTRICT coeffs, char value) {
static inline void bw_osc_tri_set_antialiasing(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
char value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_init);
coeffs->antialiasing = value;
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_init);
}
static inline void bw_osc_tri_set_slope(bw_osc_tri_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_osc_tri_set_slope(
bw_osc_tri_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= 0.001f && value <= 0.999f);
coeffs->slope = value;
BW_ASSERT_DEEP(bw_osc_tri_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_osc_tri_coeffs_state_init);
}
static inline char bw_osc_tri_coeffs_is_valid(
const bw_osc_tri_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
#ifdef BW_DEBUG_DEEP
if (coeffs->hash != bw_hash_sdbm("bw_osc_tri_coeffs"))
return 0;
if (coeffs->state < bw_osc_tri_coeffs_state_init || coeffs->state > bw_osc_tri_coeffs_state_reset_coeffs)
return 0;
#endif
return bw_is_finite(coeffs->slope) && coeffs->slope >= 0.001f && coeffs->slope <= 0.999f;
}
#ifdef __cplusplus
@ -328,21 +544,28 @@ class OscTri {
public:
OscTri();
void setSampleRate(float sampleRate);
void setSampleRate(
float sampleRate);
void reset();
void process(
const float * const * x,
const float * const *x_phase_inc,
const float * const * x_inc,
float * const * y,
size_t nSamples);
void process(
std::array<const float *, N_CHANNELS> x,
std::array<const float *, N_CHANNELS> x_phase_inc,
std::array<const float *, N_CHANNELS> x_inc,
std::array<float *, N_CHANNELS> y,
size_t nSamples);
void setAntialiasing(bool value);
void setSlope(float value);
void setAntialiasing(
bool value);
void setSlope(
float value);
/*! <<<...
* }
* ```
@ -363,7 +586,8 @@ inline OscTri<N_CHANNELS>::OscTri() {
}
template<size_t N_CHANNELS>
inline void OscTri<N_CHANNELS>::setSampleRate(float sampleRate) {
inline void OscTri<N_CHANNELS>::setSampleRate(
float sampleRate) {
bw_osc_tri_set_sample_rate(&coeffs, sampleRate);
}
@ -375,28 +599,30 @@ inline void OscTri<N_CHANNELS>::reset() {
template<size_t N_CHANNELS>
inline void OscTri<N_CHANNELS>::process(
const float * const * x,
const float * const *x_phase_inc,
const float * const * x_inc,
float * const * y,
size_t nSamples) {
bw_osc_tri_process_multi(&coeffs, x, x_phase_inc, y, N_CHANNELS, nSamples);
bw_osc_tri_process_multi(&coeffs, x, x_inc, y, N_CHANNELS, nSamples);
}
template<size_t N_CHANNELS>
inline void OscTri<N_CHANNELS>::process(
std::array<const float *, N_CHANNELS> x,
std::array<const float *, N_CHANNELS> x_phase_inc,
std::array<const float *, N_CHANNELS> x_inc,
std::array<float *, N_CHANNELS> y,
size_t nSamples) {
process(x.data(), x_phase_inc.data(), y.data(), nSamples);
process(x.data(), x_inc.data(), y.data(), nSamples);
}
template<size_t N_CHANNELS>
inline void OscTri<N_CHANNELS>::setAntialiasing(bool value) {
inline void OscTri<N_CHANNELS>::setAntialiasing(
bool value) {
bw_osc_tri_set_antialiasing(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void OscTri<N_CHANNELS>::setSlope(float value) {
inline void OscTri<N_CHANNELS>::setSlope(
float value) {
bw_osc_tri_set_slope(&coeffs, value);
}