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finalized bw_ls1 + examples + fix bw_hs1 changelog

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This commit is contained in:
Stefano D'Angelo 2023-08-31 12:06:34 +02:00
parent e4aef951f2
commit 2d653f471f
4 changed files with 450 additions and 54 deletions
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3
examples/fx_ls1/vst3/Makefile
View File

@ -4,3 +4,6 @@ NAME := bw_example_fx_ls1
SOURCES = ${SOURCES_COMMON} ${ROOT_DIR}/../src/bw_example_fx_ls1.c
include ${ROOT_DIR}/../../common/vst3/vst3.mk
CXXFLAGS += -DRELEASE=1 -DNDEBUG -DBW_NO_DEBUG
#CXXFLAGS += -DDEVELOPMENT=1 -DBW_DEBUG_DEEP

3
examples/fxpp_ls1/vst3/Makefile
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@ -4,3 +4,6 @@ NAME := bw_example_fxpp_ls1
SOURCES = ${SOURCES_COMMON} ${ROOT_DIR}/../src/bw_example_fxpp_ls1.cpp
include ${ROOT_DIR}/../../common/vst3/vst3.mk
CXXFLAGS += -DRELEASE=1 -DNDEBUG -DBW_NO_DEBUG
#CXXFLAGS += -DDEVELOPMENT=1 -DBW_DEBUG_DEEP

2
include/bw_hs1.h
View File

@ -41,6 +41,8 @@
* <li>Removed usage of reserved identifiers.</li>
* <li>Fixed bug when setting default parameter values in
* <code>bw_hs1_init()</code>.</li>
* <li>Fixed documentation to indicate correct default parameter
* values.</li>
* <li>Clearly specificed parameter validity ranges.</li>
* <li>Added debugging code.</li>
* </ul>

476
include/bw_ls1.h
View File

@ -30,6 +30,7 @@
* <ul>
* <li>Version <strong>1.0.0</strong>:
* <ul>
* <li>Added prewarp_at_cutoff and prewarp_freq parameters.</li>
* <li><code>bw_ls1_process()</code> and
* <code>bw_ls1_process_multi()</code> now use <code>size_t</code>
* to count samples and channels.</li>
@ -39,6 +40,10 @@
* <li>Added overladed C++ <code>process()</code> function taking
* C-style arrays as arguments.</li>
* <li>Removed usage of reserved identifiers.</li>
* <li>Fixed documentation to indicate correct default parameter
* values.</li>
* <li>Clearly specificed parameter validity ranges.</li>
* <li>Added debugging code.</li>
* </ul>
* </li>
* <li>Version <strong>0.6.0</strong>:
@ -91,51 +96,68 @@ typedef struct bw_ls1_state bw_ls1_state;
*
* #### bw_ls1_init()
* ```>>> */
static inline void bw_ls1_init(bw_ls1_coeffs *BW_RESTRICT coeffs);
static inline void bw_ls1_init(
bw_ls1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Initializes input parameter values in `coeffs`.
*
* #### bw_ls1_set_sample_rate()
* ```>>> */
static inline void bw_ls1_set_sample_rate(bw_ls1_coeffs *BW_RESTRICT coeffs, float sample_rate);
static inline void bw_ls1_set_sample_rate(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float sample_rate);
/*! <<<```
* Sets the `sample_rate` (Hz) value in `coeffs`.
*
* #### bw_ls1_reset_coeffs()
* ```>>> */
static inline void bw_ls1_reset_coeffs(bw_ls1_coeffs *BW_RESTRICT coeffs);
static inline void bw_ls1_reset_coeffs(
bw_ls1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Resets coefficients in `coeffs` to assume their target values.
*
* #### bw_ls1_reset_state()
* ```>>> */
static inline void bw_ls1_reset_state(const bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_state *BW_RESTRICT state, float x_0);
static inline void bw_ls1_reset_state(
const bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_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_ls1_update_coeffs_ctrl()
* ```>>> */
static inline void bw_ls1_update_coeffs_ctrl(bw_ls1_coeffs *BW_RESTRICT coeffs);
static inline void bw_ls1_update_coeffs_ctrl(
bw_ls1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers control-rate update of coefficients in `coeffs`.
*
* #### bw_ls1_update_coeffs_audio()
* ```>>> */
static inline void bw_ls1_update_coeffs_audio(bw_ls1_coeffs *BW_RESTRICT coeffs);
static inline void bw_ls1_update_coeffs_audio(
bw_ls1_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers audio-rate update of coefficients in `coeffs`.
*
* #### bw_ls1_process1()
* ```>>> */
static inline float bw_ls1_process1(const bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_state *BW_RESTRICT state, float x);
static inline float bw_ls1_process1(
const bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_state * BW_RESTRICT state,
float x);
/*! <<<```
* Processes one input sample `x` using `coeffs`, while using and updating
* `state`. Returns the corresponding output sample.
*
* #### bw_ls1_process()
* ```>>> */
static inline void bw_ls1_process(bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples);
static inline void bw_ls1_process(
bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_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
@ -143,7 +165,13 @@ static inline void bw_ls1_process(bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_stat
*
* #### bw_ls1_process_multi()
* ```>>> */
static inline void bw_ls1_process_multi(bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_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_ls1_process_multi(
bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_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
@ -152,27 +180,105 @@ static inline void bw_ls1_process_multi(bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls
*
* #### bw_ls1_set_cutoff()
* ```>>> */
static inline void bw_ls1_set_cutoff(bw_ls1_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_ls1_set_cutoff(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the cutoff frequency `value` (Hz) in `coeffs`.
*
* `value` must be finite and positive.
*
* By the time `bw_ls1_update_coeffs_ctrl()`, `bw_ls1_update_coeffs_audio()`,
* `bw_ls1_process()`, or `bw_ls1_process_multi()` is called,
* `cutoff * bw_rcpf(bw_sqrtf(dc_gain))` must be in [`1e-6f`, `1e6f`].
*
* Default value: `1e3f`.
*
* #### bw_ls1_set_prewarp_at_cutoff()
* ```>>> */
static inline void bw_ls1_set_prewarp_at_cutoff(
bw_ls1_coeffs * BW_RESTRICT coeffs,
char value);
/*! <<<```
* Sets whether bilinear transform prewarping frequency should match the
* cutoff frequency (non-`0`) or not (`0`).
*
* Default value: non-`0` (on).
*
* #### bw_ls1_set_prewarp_freq()
* ```>>> */
static inline void bw_ls1_set_prewarp_freq(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the prewarping frequency `value` (Hz) in `coeffs`.
*
* 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_ls1_set_dc_gain_lin()
* ```>>> */
static inline void bw_ls1_set_dc_gain_lin(bw_ls1_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_ls1_set_dc_gain_lin(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the dc gain parameter to the given `value` (linear gain) in `coeffs`.
*
* Default value: `0.f`.
* `value` must be finite and greater than or equal to `1e-30f`.
*
* By the time `bw_ls1_update_coeffs_ctrl()`, `bw_ls1_update_coeffs_audio()`,
* `bw_ls1_process()`, or `bw_ls1_process_multi()` is called,
* `cutoff * bw_rcpf(bw_sqrtf(dc_gain))` must be in [`1e-6f`, `1e6f`].
*
* Default value: `1.f`.
*
* #### bw_ls1_set_dc_gain_dB()
* ```>>> */
static inline void bw_ls1_set_dc_gain_dB(bw_ls1_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_ls1_set_dc_gain_dB(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the dc gain parameter to the given `value` (dB) in `coeffs`.
*
* Default value: `-INFINITY`.
* `value` must be finite and greater than or equal to `-600.f`.
*
* By the time `bw_ls1_update_coeffs_ctrl()`, `bw_ls1_update_coeffs_audio()`,
* `bw_ls1_process()`, or `bw_ls1_process_multi()` is called,
* `cutoff * bw_rcpf(bw_sqrtf(dc_gain))` must be in [`1e-6f`, `1e6f`].
*
* Default value: `0.f`.
*
* #### bw_ls1_coeffs_is_valid()
* ```>>> */
static inline char bw_ls1_coeffs_is_valid(
const bw_ls1_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_ls1_coeffs`.
*
* #### bw_ls1_state_is_valid()
* ```>>> */
static inline char bw_ls1_state_is_valid(
const bw_ls1_coeffs * BW_RESTRICT coeffs,
const bw_ls1_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 `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_ls1_state`.
* }}} */
#ifdef __cplusplus
@ -191,98 +297,348 @@ static inline void bw_ls1_set_dc_gain_dB(bw_ls1_coeffs *BW_RESTRICT coeffs, floa
extern "C" {
#endif
#ifdef BW_DEBUG_DEEP
enum bw_ls1_coeffs_state {
bw_ls1_coeffs_state_invalid,
bw_ls1_coeffs_state_init,
bw_ls1_coeffs_state_set_sample_rate,
bw_ls1_coeffs_state_reset_coeffs
};
#endif
struct bw_ls1_coeffs {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
enum bw_ls1_coeffs_state state;
uint32_t reset_id;
#endif
// Sub-components
bw_mm1_coeffs mm1_coeffs;
// Parameters
float cutoff;
float prewarp_k;
float prewarp_freq;
float dc_gain;
char update;
};
struct bw_ls1_state {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
uint32_t coeffs_reset_id;
#endif
bw_mm1_state mm1_state;
};
static inline void bw_ls1_init(bw_ls1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_ls1_init(
bw_ls1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
bw_mm1_init(&coeffs->mm1_coeffs);
bw_mm1_set_prewarp_at_cutoff(&coeffs->mm1_coeffs, 0);
bw_mm1_set_coeff_x(&coeffs->mm1_coeffs, 1.f);
bw_mm1_set_coeff_lp(&coeffs->mm1_coeffs, 0.f);
coeffs->cutoff = 1e3f;
coeffs->prewarp_k = 1.f;
coeffs->prewarp_freq = 1e3f;
coeffs->dc_gain = 1.f;
#ifdef BW_DEBUG_DEEP
coeffs->hash = bw_hash_sdbm("bw_ls1_coeffs");
coeffs->state = bw_ls1_coeffs_state_init;
coeffs->reset_id = coeffs->hash + 1;
#endif
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_ls1_coeffs_state_init);
}
static inline void bw_ls1_set_sample_rate(bw_ls1_coeffs *BW_RESTRICT coeffs, float sample_rate) {
static inline void bw_ls1_set_sample_rate(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float sample_rate) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
bw_mm1_set_sample_rate(&coeffs->mm1_coeffs, sample_rate);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_ls1_coeffs_state_set_sample_rate;
#endif
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_ls1_coeffs_state_set_sample_rate);
}
static inline void bw_ls1_update_mm1_params(bw_ls1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_ls1_update_mm1_params(
bw_ls1_coeffs * BW_RESTRICT coeffs) {
bw_mm1_set_prewarp_freq(&coeffs->mm1_coeffs, coeffs->prewarp_freq + coeffs->prewarp_k * (coeffs->cutoff - coeffs->prewarp_freq));
if (coeffs->update) {
bw_mm1_set_cutoff(&coeffs->mm1_coeffs, coeffs->cutoff * bw_rcpf(bw_sqrtf(coeffs->dc_gain)));
bw_mm1_set_coeff_lp(&coeffs->mm1_coeffs, coeffs->dc_gain - 1.f);
bw_mm1_set_prewarp_freq(&coeffs->mm1_coeffs, coeffs->cutoff);
coeffs->update = 0;
}
}
static inline void bw_ls1_reset_coeffs(bw_ls1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_ls1_reset_coeffs(
bw_ls1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_set_sample_rate);
coeffs->update = 1;
bw_ls1_update_mm1_params(coeffs);
bw_mm1_reset_coeffs(&coeffs->mm1_coeffs);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_ls1_coeffs_state_reset_coeffs;
coeffs->reset_id++;
#endif
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_ls1_coeffs_state_reset_coeffs);
}
static inline void bw_ls1_reset_state(const bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_state *BW_RESTRICT state, float x_0) {
static inline void bw_ls1_reset_state(
const bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_state * BW_RESTRICT state,
float x_0) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(bw_is_finite(x_0));
bw_mm1_reset_state(&coeffs->mm1_coeffs, &state->mm1_state, x_0);
#ifdef BW_DEBUG_DEEP
state->hash = bw_hash_sdbm("bw_ls1_state");
state->coeffs_reset_id = coeffs->reset_id;
#endif
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_ls1_state_is_valid(coeffs, state));
}
static inline void bw_ls1_update_coeffs_ctrl(bw_ls1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_ls1_update_coeffs_ctrl(
bw_ls1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(coeffs->cutoff * bw_rcpf(bw_sqrtf(coeffs->dc_gain)) >= 1e-6f && coeffs->cutoff * bw_rcpf(bw_sqrtf(coeffs->dc_gain)) <= 1e6f);
bw_ls1_update_mm1_params(coeffs);
bw_mm1_update_coeffs_ctrl(&coeffs->mm1_coeffs);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
}
static inline void bw_ls1_update_coeffs_audio(bw_ls1_coeffs *BW_RESTRICT coeffs) {
static inline void bw_ls1_update_coeffs_audio(
bw_ls1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(coeffs->cutoff * bw_rcpf(bw_sqrtf(coeffs->dc_gain)) >= 1e-6f && coeffs->cutoff * bw_rcpf(bw_sqrtf(coeffs->dc_gain)) <= 1e6f);
bw_mm1_update_coeffs_audio(&coeffs->mm1_coeffs);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
}
static inline float bw_ls1_process1(const bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_state *BW_RESTRICT state, float x) {
return bw_mm1_process1(&coeffs->mm1_coeffs, &state->mm1_state, x);
static inline float bw_ls1_process1(
const bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_state * BW_RESTRICT state,
float x) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_ls1_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(x));
const float y = bw_mm1_process1(&coeffs->mm1_coeffs, &state->mm1_state, x);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_ls1_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(y));
return y;
}
static inline void bw_ls1_process(bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples) {
static inline void bw_ls1_process(
bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_state * BW_RESTRICT state,
const float * x,
float * y,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_ls1_state_is_valid(coeffs, state));
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
BW_ASSERT(y != NULL);
bw_ls1_update_coeffs_ctrl(coeffs);
for (size_t i = 0; i < n_samples; i++) {
bw_ls1_update_coeffs_audio(coeffs);
y[i] = bw_ls1_process1(coeffs, state, x[i]);
}
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_ls1_state_is_valid(coeffs, state));
BW_ASSERT_DEEP(bw_has_only_finite(y, n_samples));
}
static inline void bw_ls1_process_multi(bw_ls1_coeffs *BW_RESTRICT coeffs, bw_ls1_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_ls1_process_multi(
bw_ls1_coeffs * BW_RESTRICT coeffs,
bw_ls1_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_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(x != NULL);
BW_ASSERT(y != NULL);
bw_ls1_update_coeffs_ctrl(coeffs);
for (size_t i = 0; i < n_samples; i++) {
bw_ls1_update_coeffs_audio(coeffs);
for (size_t j = 0; j < n_channels; j++)
y[j][i] = bw_ls1_process1(coeffs, state[j], x[j][i]);
}
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_reset_coeffs);
}
static inline void bw_ls1_set_cutoff(bw_ls1_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_ls1_set_cutoff(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value > 0.f);
if (value != coeffs->cutoff) {
coeffs->cutoff = value;
coeffs->update = 1;
}
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
}
static inline void bw_ls1_set_dc_gain_lin(bw_ls1_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_ls1_set_prewarp_at_cutoff(
bw_ls1_coeffs * BW_RESTRICT coeffs,
char value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
coeffs->prewarp_k = value ? 1.f : 0.f;
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
}
static inline void bw_ls1_set_prewarp_freq(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= 1e-6f && value <= 1e6f);
coeffs->prewarp_freq = value;
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
}
static inline void bw_ls1_set_dc_gain_lin(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= 1e-30f);
if (value != coeffs->dc_gain) {
coeffs->dc_gain = value;
coeffs->update = 1;
}
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
}
static inline void bw_ls1_set_dc_gain_dB(bw_ls1_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_ls1_set_dc_gain_dB(
bw_ls1_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= -600.f);
bw_ls1_set_dc_gain_lin(coeffs, bw_dB2linf(value));
BW_ASSERT_DEEP(bw_ls1_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ls1_coeffs_state_init);
}
static inline char bw_ls1_coeffs_is_valid(
const bw_ls1_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
#ifdef BW_DEBUG_DEEP
if (coeffs->hash != bw_hash_sdbm("bw_ls1_coeffs"))
return 0;
if (coeffs->state < bw_ls1_coeffs_state_init || coeffs->state > bw_ls1_coeffs_state_reset_coeffs)
return 0;
#endif
if (!bw_is_finite(coeffs->cutoff) || coeffs->cutoff <= 0.f)
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;
if (!bw_is_finite(coeffs->dc_gain) || coeffs->dc_gain < 1e-30f)
return 0;
return bw_mm1_coeffs_is_valid(&coeffs->mm1_coeffs);
}
static inline char bw_ls1_state_is_valid(
const bw_ls1_coeffs * BW_RESTRICT coeffs,
const bw_ls1_state * BW_RESTRICT state) {
BW_ASSERT(state != NULL);
#ifdef BW_DEBUG_DEEP
if (state->hash != bw_hash_sdbm("bw_ls1_state"))
return 0;
if (coeffs != NULL && coeffs->reset_id != state->coeffs_reset_id)
return 0;
#endif
(void)coeffs;
return bw_mm1_state_is_valid(&coeffs->mm1_coeffs, &state->mm1_state);
}
#ifdef __cplusplus
@ -302,20 +658,35 @@ class LS1 {
public:
LS1();
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,
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);
void setCutoff(float value);
void setDcGainLin(float value);
void setDcGainDB(float value);
void setCutoff(
float value);
void setPrewarpAtCutoff(
bool value);
void setPrewarpFreq(
float value);
void setDcGainLin(
float value);
void setDcGainDB(
float value);
/*! <<<...
* }
* ```
@ -340,21 +711,23 @@ inline LS1<N_CHANNELS>::LS1() {
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::setSampleRate(float sampleRate) {
inline void LS1<N_CHANNELS>::setSampleRate(
float sampleRate) {
bw_ls1_set_sample_rate(&coeffs, sampleRate);
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::reset(float x_0) {
inline void LS1<N_CHANNELS>::reset(
float x0) {
bw_ls1_reset_coeffs(&coeffs);
for (size_t i = 0; i < N_CHANNELS; i++)
bw_ls1_reset_state(&coeffs, states + i, x_0);
bw_ls1_reset_state(&coeffs, states + i, x0);
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::process(
const float * const *x,
float * const *y,
const float * const * x,
float * const * y,
size_t nSamples) {
bw_ls1_process_multi(&coeffs, statesP, x, y, N_CHANNELS, nSamples);
}
@ -368,17 +741,32 @@ inline void LS1<N_CHANNELS>::process(
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::setCutoff(float value) {
inline void LS1<N_CHANNELS>::setCutoff(
float value) {
bw_ls1_set_cutoff(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::setDcGainLin(float value) {
inline void LS1<N_CHANNELS>::setPrewarpAtCutoff(
bool value) {
bw_ls1_set_prewarp_at_cutoff(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::setPrewarpFreq(
float value) {
bw_ls1_set_prewarp_freq(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::setDcGainLin(
float value) {
bw_ls1_set_dc_gain_lin(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void LS1<N_CHANNELS>::setDcGainDB(float value) {
inline void LS1<N_CHANNELS>::setDcGainDB(
float value) {
bw_ls1_set_dc_gain_dB(&coeffs, value);
}