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finalized bw_lp1, examples + more debug for bw_slew_lim + cosmetic changes

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This commit is contained in:
Stefano D'Angelo 2023-08-30 11:00:11 +02:00
parent e9a935a964
commit d2994b0e12
5 changed files with 406 additions and 79 deletions
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3
examples/fx_lp1/vst3/Makefile
View File

@ -4,3 +4,6 @@ NAME := bw_example_fx_lp1
SOURCES = ${SOURCES_COMMON} ${ROOT_DIR}/../src/bw_example_fx_lp1.c
include ${ROOT_DIR}/../../common/vst3/vst3.mk
CXXFLAGS += -DRELEASE=1 -DNDEBUG -DBW_NO_DEBUG
#CXXFLAGS += -DDEVELOPMENT=1 -DBW_DEBUG_DEEP

3
examples/fxpp_lp1/vst3/Makefile
View File

@ -4,3 +4,6 @@ NAME := bw_example_fxpp_lp1
SOURCES = ${SOURCES_COMMON} ${ROOT_DIR}/../src/bw_example_fxpp_lp1.cpp
include ${ROOT_DIR}/../../common/vst3/vst3.mk
CXXFLAGS += -DRELEASE=1 -DNDEBUG -DBW_NO_DEBUG
#CXXFLAGS += -DDEVELOPMENT=1 -DBW_DEBUG_DEEP

433
include/bw_lp1.h
View File

@ -41,6 +41,8 @@
* <li>Added overladed C++ <code>process()</code> function taking
* C-style arrays as arguments.</li>
* <li>Removed usage of reserved identifiers.</li>
* <li>Fixed theoretical bug in <code>bw_lp1_init()</code>.</li>
* <li>Added debugging code.</li>
* </ul>
* </li>
* <li>Version <strong>0.6.0</strong>:
@ -94,51 +96,68 @@ typedef struct bw_lp1_state bw_lp1_state;
*
* #### bw_lp1_init()
* ```>>> */
static inline void bw_lp1_init(bw_lp1_coeffs *BW_RESTRICT coeffs);
static inline void bw_lp1_init(
bw_lp1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Initializes input parameter values in `coeffs`.
*
* #### bw_lp1_set_sample_rate()
* ```>>> */
static inline void bw_lp1_set_sample_rate(bw_lp1_coeffs *BW_RESTRICT coeffs, float sample_rate);
static inline void bw_lp1_set_sample_rate(
bw_lp1_coeffs * BW_RESTRICT coeffs,
float sample_rate);
/*! <<<```
* Sets the `sample_rate` (Hz) value in `coeffs`.
*
* #### bw_lp1_reset_coeffs()
* ```>>> */
static inline void bw_lp1_reset_coeffs(bw_lp1_coeffs *BW_RESTRICT coeffs);
static inline void bw_lp1_reset_coeffs(
bw_lp1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Resets coefficients in `coeffs` to assume their target values.
*
* #### bw_lp1_reset_state()
* ```>>> */
static inline void bw_lp1_reset_state(const bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT state, float x_0);
static inline void bw_lp1_reset_state(
const bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_state * BW_RESTRICT state,
float x_0);
/*! <<<```
* Resets the given `state` to its initial values using the given `coeffs`
* and the quiescent/initial input value `x_0`.
*
* #### bw_lp1_update_coeffs_ctrl()
* ```>>> */
static inline void bw_lp1_update_coeffs_ctrl(bw_lp1_coeffs *BW_RESTRICT coeffs);
static inline void bw_lp1_update_coeffs_ctrl(
bw_lp1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers control-rate update of coefficients in `coeffs`.
*
* #### bw_lp1_update_coeffs_audio()
* ```>>> */
static inline void bw_lp1_update_coeffs_audio(bw_lp1_coeffs *BW_RESTRICT coeffs);
static inline void bw_lp1_update_coeffs_audio(
bw_lp1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers audio-rate update of coefficients in `coeffs`.
*
* #### bw_lp1_process1()
* ```>>> */
static inline float bw_lp1_process1(const bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT state, float x);
static inline float bw_lp1_process1(
const bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_state * BW_RESTRICT state,
float x);
/*! <<<```
* Processes one input sample `x` using `coeffs`, while using and updating
* `state`. Returns the corresponding output sample.
*
* #### bw_lp1_process()
* ```>>> */
static inline void bw_lp1_process(bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples);
static inline void bw_lp1_process(
bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_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
@ -146,7 +165,13 @@ static inline void bw_lp1_process(bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_stat
*
* #### bw_lp1_process_multi()
* ```>>> */
static inline void bw_lp1_process_multi(bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT const *BW_RESTRICT state, const float * const *x, float * const *y, size_t n_channels, size_t n_samples);
static inline void bw_lp1_process_multi(
bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_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
@ -155,15 +180,21 @@ static inline void bw_lp1_process_multi(bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp
*
* #### bw_lp1_set_cutoff()
* ```>>> */
static inline void bw_lp1_set_cutoff(bw_lp1_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_lp1_set_cutoff(
bw_lp1_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the cutoff frequency `value` (Hz) in `coeffs`.
*
* Valid range: [`1e-6f`, `1e6f`].
*
* Default value: `1e3f`.
*
* #### bw_lp1_set_prewarp_at_cutoff()
* ```>>> */
static inline void bw_lp1_set_prewarp_at_cutoff(bw_lp1_coeffs *BW_RESTRICT coeffs, char value);
static inline void bw_lp1_set_prewarp_at_cutoff(
bw_lp1_coeffs * BW_RESTRICT coeffs,
char value);
/*! <<<```
* Sets whether bilinear transform prewarping frequency should match the
* cutoff frequency (non-`0`) or not (`0`).
@ -172,13 +203,42 @@ static inline void bw_lp1_set_prewarp_at_cutoff(bw_lp1_coeffs *BW_RESTRICT coeff
*
* #### bw_lp1_set_prewarp_freq()
* ```>>> */
static inline void bw_lp1_set_prewarp_freq(bw_lp1_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_lp1_set_prewarp_freq(
bw_lp1_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the prewarping frequency `value` (Hz) in `coeffs`.
*
* Only used when the prewarp\_at\_cutoff parameter is off.
* Only used when the prewarp\_at\_cutoff parameter is off and however
* internally limited to avoid instability.
*
* Valid range: [`1e-6f`, `1e6f`].
*
* Default value: `1e3f`.
*
* #### bw_lp1_coeffs_is_valid()
* ```>>> */
static inline char bw_lp1_coeffs_is_valid(
const bw_lp1_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_lp1_coeffs`.
*
* #### bw_lp1_state_is_valid()
* ```>>> */
static inline char bw_lp1_state_is_valid(
const bw_lp1_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.
*
* `state` must at least point to a readable memory block of size greater
* than or equal to that of `bw_lp1_state`.
* }}} */
#ifdef __cplusplus
@ -197,47 +257,94 @@ static inline void bw_lp1_set_prewarp_freq(bw_lp1_coeffs *BW_RESTRICT coeffs, fl
extern "C" {
#endif
struct bw_lp1_coeffs {
// Sub-components
bw_one_pole_coeffs smooth_coeffs;
bw_one_pole_state smooth_cutoff_state;
bw_one_pole_state smooth_prewarp_freq_state;
// Coefficients
float t_k;
#ifdef BW_DEBUG_DEEP
enum bw_lp1_coeffs_state {
bw_lp1_coeffs_state_invalid,
bw_lp1_coeffs_state_init,
bw_lp1_coeffs_state_set_sample_rate,
bw_lp1_coeffs_state_reset_coeffs
};
#endif
float prewarp_k;
float t;
float X_x;
float X_X_z1;
float y_X;
struct bw_lp1_coeffs {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
enum bw_lp1_coeffs_state state;
uint32_t reset_id;
#endif
// Sub-components
bw_one_pole_coeffs smooth_coeffs;
bw_one_pole_state smooth_cutoff_state;
bw_one_pole_state smooth_prewarp_freq_state;
// Coefficients
float t_k;
float t;
float X_x;
float X_X_z1;
float y_X;
// Parameters
float cutoff;
float prewarp_freq;
float cutoff;
float prewarp_k;
float prewarp_freq;
};
struct bw_lp1_state {
float y_z1;
float X_z1;
#ifdef BW_DEBUG_DEEP
uint32_t hash;
uint32_t coeffs_reset_id;
#endif
float y_z1;
float X_z1;
};
static inline void bw_lp1_init(bw_lp1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_lp1_init(
bw_lp1_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);
bw_one_pole_set_sticky_thresh(&coeffs->smooth_coeffs, 1e-3f);
bw_one_pole_set_sticky_mode(&coeffs->smooth_coeffs, bw_one_pole_sticky_mode_rel);
coeffs->cutoff = 1e3f;
coeffs->prewarp_freq = 1e3f;
coeffs->prewarp_k = 1.f;
coeffs->prewarp_freq = 1e3f;
#ifdef BW_DEBUG_DEEP
coeffs->hash = bw_hash_sdbm("bw_lp1_coeffs");
coeffs->state = bw_lp1_coeffs_state_init;
coeffs->reset_id = coeffs->hash + 1;
#endif
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_lp1_coeffs_state_init);
}
static inline void bw_lp1_set_sample_rate(bw_lp1_coeffs *BW_RESTRICT coeffs, float sample_rate) {
static inline void bw_lp1_set_sample_rate(
bw_lp1_coeffs * BW_RESTRICT coeffs,
float sample_rate) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_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);
coeffs->t_k = 3.141592653589793f / sample_rate;
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_lp1_coeffs_state_set_sample_rate;
#endif
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_lp1_coeffs_state_set_sample_rate);
}
static inline void bw_lp1_do_update_coeffs(bw_lp1_coeffs *BW_RESTRICT coeffs, char force) {
static inline void bw_lp1_do_update_coeffs(
bw_lp1_coeffs * BW_RESTRICT coeffs,
char force) {
const float prewarp_freq = coeffs->prewarp_freq + coeffs->prewarp_k * (coeffs->cutoff - coeffs->prewarp_freq);
float prewarp_freq_cur = bw_one_pole_get_y_z1(&coeffs->smooth_prewarp_freq_state);
float cutoff_cur = bw_one_pole_get_y_z1(&coeffs->smooth_cutoff_state);
@ -246,7 +353,7 @@ static inline void bw_lp1_do_update_coeffs(bw_lp1_coeffs *BW_RESTRICT coeffs, ch
if (prewarp_freq_changed || cutoff_changed) {
if (prewarp_freq_changed) {
prewarp_freq_cur = bw_one_pole_process1_sticky_rel(&coeffs->smooth_coeffs, &coeffs->smooth_prewarp_freq_state, prewarp_freq);
coeffs->t = bw_tanf(coeffs->t_k * prewarp_freq_cur);
coeffs->t = bw_tanf(bw_minf(coeffs->t_k * prewarp_freq_cur, 1.569796326794897f));
}
if (cutoff_changed) {
cutoff_cur = bw_one_pole_process1_sticky_rel(&coeffs->smooth_coeffs, &coeffs->smooth_cutoff_state, coeffs->cutoff);
@ -258,59 +365,239 @@ static inline void bw_lp1_do_update_coeffs(bw_lp1_coeffs *BW_RESTRICT coeffs, ch
}
}
static inline void bw_lp1_reset_coeffs(bw_lp1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_lp1_reset_coeffs(
bw_lp1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_set_sample_rate);
bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_cutoff_state, coeffs->cutoff);
bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_prewarp_freq_state, coeffs->prewarp_freq + coeffs->prewarp_k * (coeffs->cutoff - coeffs->prewarp_freq));
bw_lp1_do_update_coeffs(coeffs, 1);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_lp1_coeffs_state_reset_coeffs;
coeffs->reset_id++;
#endif
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_lp1_coeffs_state_reset_coeffs);
}
static inline void bw_lp1_reset_state(const bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT state, float x_0) {
static inline void bw_lp1_reset_state(
const bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_state * BW_RESTRICT state,
float x_0) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(bw_is_finite(x_0));
(void)coeffs;
state->y_z1 = x_0;
state->X_z1 = 0.f;
#ifdef BW_DEBUG_DEEP
state->hash = bw_hash_sdbm("bw_lp1_state");
state->coeffs_reset_id = coeffs->reset_id;
#endif
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_lp1_state_is_valid(state));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
}
static inline void bw_lp1_update_coeffs_ctrl(bw_lp1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_lp1_update_coeffs_ctrl(
bw_lp1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
(void)coeffs;
}
static inline void bw_lp1_update_coeffs_audio(bw_lp1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_lp1_update_coeffs_audio(
bw_lp1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
bw_lp1_do_update_coeffs(coeffs, 0);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
}
static inline float bw_lp1_process1(const bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT state, float x) {
static inline float bw_lp1_process1(
const bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_state * BW_RESTRICT state,
float x) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_lp1_state_is_valid(state));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
BW_ASSERT(bw_is_finite(x));
const float X = coeffs->X_x * (x - state->y_z1) - coeffs->X_X_z1 * state->X_z1;
const float y = x - coeffs->y_X * X;
state->y_z1 = y;
state->X_z1 = X;
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_lp1_state_is_valid(state));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
BW_ASSERT(bw_is_finite(y));
return y;
}
static inline void bw_lp1_process(bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples) {
static inline void bw_lp1_process(
bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_state * BW_RESTRICT state,
const float * x,
float * y,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_lp1_state_is_valid(state));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(!bw_has_nan(x, n_samples));
BW_ASSERT(y != NULL);
for (size_t i = 0; i < n_samples; i++) {
bw_lp1_update_coeffs_audio(coeffs);
y[i] = bw_lp1_process1(coeffs, state, x[i]);
}
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_lp1_state_is_valid(state));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
BW_ASSERT_DEEP(!bw_has_nan(y, n_samples));
}
static inline void bw_lp1_process_multi(bw_lp1_coeffs *BW_RESTRICT coeffs, bw_lp1_state *BW_RESTRICT const *BW_RESTRICT state, const float * const *x, float * const *y, size_t n_channels, size_t n_samples) {
static inline void bw_lp1_process_multi(
bw_lp1_coeffs * BW_RESTRICT coeffs,
bw_lp1_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 != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(x != NULL);
BW_ASSERT(y != NULL);
for (size_t i = 0; i < n_samples; i++) {
bw_lp1_update_coeffs_audio(coeffs);
for (size_t j = 0; j < n_channels; j++)
y[j][i] = bw_lp1_process1(coeffs, state[j], x[j][i]);
}
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_reset_coeffs);
}
static inline void bw_lp1_set_cutoff(bw_lp1_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_lp1_set_cutoff(
bw_lp1_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_init);
BW_ASSERT(!bw_is_nan(value));
BW_ASSERT(value >= 1e-6f && value <= 1e6f);
coeffs->cutoff = value;
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_init);
}
static inline void bw_lp1_set_prewarp_at_cutoff(bw_lp1_coeffs *BW_RESTRICT coeffs, char value) {
static inline void bw_lp1_set_prewarp_at_cutoff(
bw_lp1_coeffs * BW_RESTRICT coeffs,
char value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_init);
coeffs->prewarp_k = value ? 1.f : 0.f;
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_init);
}
static inline void bw_lp1_set_prewarp_freq(bw_lp1_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_lp1_set_prewarp_freq(
bw_lp1_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_init);
BW_ASSERT(value >= 1e-6f && value <= 1e6f);
coeffs->prewarp_freq = value;
BW_ASSERT_DEEP(bw_lp1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_lp1_coeffs_state_init);
}
static inline char bw_lp1_coeffs_is_valid(
const bw_lp1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
#ifdef BW_DEBUG_DEEP
if (coeffs->hash != bw_hash_sdbm("bw_lp1_coeffs"))
return 0;
if (coeffs->state < bw_lp1_coeffs_state_init || coeffs->state > bw_lp1_coeffs_state_reset_coeffs)
return 0;
#endif
if (coeffs->cutoff < 1e-6f || coeffs->cutoff > 1e6f)
return 0;
if (coeffs->prewarp_k != 0.f && coeffs->prewarp_k != 1.f)
return 0;
if (coeffs->prewarp_freq < 1e-6f || coeffs->prewarp_freq > 1e6f)
return 0;
#ifdef BW_DEBUG_DEEP
if (coeffs->state >= bw_lp1_coeffs_state_set_sample_rate) {
if (!bw_is_finite(coeffs->t_k) || coeffs->t_k <= 0.f)
return 0;
}
if (coeffs->state >= bw_lp1_coeffs_state_reset_coeffs) {
if (!bw_is_finite(coeffs->t) || coeffs->t <= 0.f)
return 0;
if (!bw_is_finite(coeffs->y_X) || coeffs->y_X <= 0.f)
return 0;
if (!bw_is_finite(coeffs->X_x) || coeffs->X_x < 0.f)
return 0;
if (!bw_is_finite(coeffs->X_X_z1) || coeffs->X_X_z1 < 0.f)
return 0;
}
#endif
return 1;
}
static inline char bw_lp1_state_is_valid(
const bw_lp1_state * BW_RESTRICT state) {
BW_ASSERT(state != NULL);
#ifdef BW_DEBUG_DEEP
if (state->hash != bw_hash_sdbm("bw_lp1_state"))
return 0;
#endif
return bw_is_finite(state->y_z1);
return bw_is_finite(state->X_z1);
}
#ifdef __cplusplus
@ -330,20 +617,29 @@ class LP1 {
public:
LP1();
void setSampleRate(float sampleRate);
void reset(float x_0 = 0.f);
void setSampleRate(
float sampleRate);
void reset(float x0 = 0.f);
void process(
const float * const *x,
float * const *y,
size_t nSamples);
const float * const * x,
float * const * y,
size_t nSamples);
void process(
std::array<const float *, N_CHANNELS> x,
std::array<float *, N_CHANNELS> y,
size_t nSamples);
std::array<float *, N_CHANNELS> y,
size_t nSamples);
void setCutoff(float value);
void setPrewarpAtCutoff(bool value);
void setPrewarpFreq(float value);
void setCutoff(
float value);
void setPrewarpAtCutoff(
bool value);
void setPrewarpFreq(
float value);
/*! <<<...
* }
* ```
@ -368,45 +664,50 @@ inline LP1<N_CHANNELS>::LP1() {
}
template<size_t N_CHANNELS>
inline void LP1<N_CHANNELS>::setSampleRate(float sampleRate) {
inline void LP1<N_CHANNELS>::setSampleRate(
float sampleRate) {
bw_lp1_set_sample_rate(&coeffs, sampleRate);
}
template<size_t N_CHANNELS>
inline void LP1<N_CHANNELS>::reset(float x_0) {
inline void LP1<N_CHANNELS>::reset(
float x0) {
bw_lp1_reset_coeffs(&coeffs);
for (size_t i = 0; i < N_CHANNELS; i++)
bw_lp1_reset_state(&coeffs, states + i, x_0);
bw_lp1_reset_state(&coeffs, states + i, x0);
}
template<size_t N_CHANNELS>
inline void LP1<N_CHANNELS>::process(
const float * const *x,
float * const *y,
size_t nSamples) {
const float * const * x,
float * const * y,
size_t nSamples) {
bw_lp1_process_multi(&coeffs, statesP, x, y, N_CHANNELS, nSamples);
}
template<size_t N_CHANNELS>
inline void LP1<N_CHANNELS>::process(
std::array<const float *, N_CHANNELS> x,
std::array<float *, N_CHANNELS> y,
size_t nSamples) {
std::array<float *, N_CHANNELS> y,
size_t nSamples) {
process(x.data(), y.data(), nSamples);
}
template<size_t N_CHANNELS>
inline void LP1<N_CHANNELS>::setCutoff(float value) {
inline void LP1<N_CHANNELS>::setCutoff(
float value) {
bw_lp1_set_cutoff(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void LP1<N_CHANNELS>::setPrewarpAtCutoff(bool value) {
inline void LP1<N_CHANNELS>::setPrewarpAtCutoff(
bool value) {
bw_lp1_set_prewarp_at_cutoff(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void LP1<N_CHANNELS>::setPrewarpFreq(float value) {
inline void LP1<N_CHANNELS>::setPrewarpFreq(
float value) {
bw_lp1_set_prewarp_freq(&coeffs, value);
}

6
include/bw_one_pole.h
View File

@ -431,7 +431,7 @@ enum bw_one_pole_coeffs_state {
bw_one_pole_coeffs_state_invalid,
bw_one_pole_coeffs_state_init,
bw_one_pole_coeffs_state_set_sample_rate,
bw_one_pole_coeffs_state_reset_coeffs,
bw_one_pole_coeffs_state_reset_coeffs
};
#endif
@ -755,7 +755,7 @@ static inline void bw_one_pole_process(
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_one_pole_state_is_valid(state));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
BW_ASSERT(n_samples == 0 || x != NULL);
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(!bw_has_nan(x, n_samples));
bw_one_pole_update_coeffs_ctrl(coeffs);
@ -1101,7 +1101,7 @@ static inline char bw_one_pole_coeffs_is_valid(
#ifdef BW_DEBUG_DEEP
if (coeffs->state >= bw_one_pole_coeffs_state_set_sample_rate) {
if (!bw_is_finite(coeffs->fs_2pi) || coeffs->fs_2pi < 0.f)
if (!bw_is_finite(coeffs->fs_2pi) || coeffs->fs_2pi <= 0.f)
return 0;
}

40
include/bw_slew_lim.h
View File

@ -311,7 +311,7 @@ enum bw_slew_lim_coeffs_state {
bw_slew_lim_coeffs_state_invalid,
bw_slew_lim_coeffs_state_init,
bw_slew_lim_coeffs_state_set_sample_rate,
bw_slew_lim_coeffs_state_reset_coeffs,
bw_slew_lim_coeffs_state_reset_coeffs
};
#endif
@ -323,14 +323,14 @@ struct bw_slew_lim_coeffs {
#endif
// Coefficients
float T;
float T;
float max_inc;
float max_dec;
float max_inc;
float max_dec;
// Parameters
float max_rate_up;
float max_rate_down;
float max_rate_up;
float max_rate_down;
};
struct bw_slew_lim_state {
@ -339,7 +339,7 @@ struct bw_slew_lim_state {
uint32_t coeffs_reset_id;
#endif
float y_z1;
float y_z1;
};
static inline void bw_slew_lim_init(
@ -553,7 +553,7 @@ static inline void bw_slew_lim_process(
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_slew_lim_state_is_valid(state));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
BW_ASSERT(n_samples == 0 || x != NULL);
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(!bw_has_nan(x, n_samples));
bw_slew_lim_update_coeffs_ctrl(coeffs);
@ -641,10 +641,20 @@ static inline void bw_slew_lim_process_multi(
bw_slew_lim_process1_down(coeffs, state[j], x[j][i]);
else
for (size_t j = 0; j < n_channels; j++) {
BW_ASSERT(state[j] != NULL);
BW_ASSERT_DEEP(bw_slew_lim_state_is_valid(state[j]));
BW_ASSERT_DEEP(coeffs->reset_id == state[j]->coeffs_reset_id);
BW_ASSERT(x[j] != NULL);
BW_ASSERT_DEEP(!bw_has_nan(x[j], n_samples));
if (y[j] != NULL)
for (size_t i = 0; i < n_samples; i++)
y[j][i] = x[j][i];
state[j]->y_z1 = x[j][n_samples - 1];
BW_ASSERT_DEEP(bw_slew_lim_state_is_valid(state[j]));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
BW_ASSERT_DEEP(y[j] != NULL ? !bw_has_nan(y[j], n_samples) : 1);
}
}
} else {
@ -663,8 +673,18 @@ static inline void bw_slew_lim_process_multi(
for (size_t i = 0; i < n_samples; i++)
bw_slew_lim_process1_down(coeffs, state[j], x[j][i]);
else
for (size_t j = 0; j < n_channels; j++)
for (size_t j = 0; j < n_channels; j++) {
BW_ASSERT(state[j] != NULL);
BW_ASSERT_DEEP(bw_slew_lim_state_is_valid(state[j]));
BW_ASSERT_DEEP(coeffs->reset_id == state[j]->coeffs_reset_id);
BW_ASSERT(x[j] != NULL);
BW_ASSERT_DEEP(!bw_has_nan(x[j], n_samples));
state[j]->y_z1 = x[j][n_samples - 1];
BW_ASSERT_DEEP(bw_slew_lim_state_is_valid(state[j]));
BW_ASSERT_DEEP(coeffs->reset_id == state->coeffs_reset_id);
}
}
}
@ -744,7 +764,7 @@ static inline char bw_slew_lim_coeffs_is_valid(
#ifdef BW_DEBUG_DEEP
if (coeffs->state >= bw_slew_lim_coeffs_state_set_sample_rate) {
if (!bw_is_finite(coeffs->T) || coeffs->T < 0.f)
if (!bw_is_finite(coeffs->T) || coeffs->T <= 0.f)
return 0;
}