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finalized bw_dist + examples + better doc bw_wah

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This commit is contained in:
Stefano D'Angelo 2023-09-14 09:36:34 +02:00
parent 7d6409772f
commit 8793af1864
6 changed files with 460 additions and 82 deletions
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1
TODO
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@ -30,6 +30,7 @@ finally:
* state that audio cannot be inf (also in reset)
* state that you need different output buffers to reset
* thank scientific paper authors
* change config.h in examples version 1.0.0
build system:
* single header generation (vs modules in bwp... to think about)

2
examples/fx_dist/src/bw_example_fx_dist.c
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@ -32,7 +32,7 @@ void bw_example_fx_dist_set_sample_rate(bw_example_fx_dist *instance, float samp
void bw_example_fx_dist_reset(bw_example_fx_dist *instance) {
bw_dist_reset_coeffs(&instance->dist_coeffs);
bw_dist_reset_state(&instance->dist_coeffs, &instance->dist_state);
bw_dist_reset_state(&instance->dist_coeffs, &instance->dist_state, 0.f);
bw_src_int_reset_state(&instance->src_up_coeffs, &instance->src_up_state, 0.f);
bw_src_int_reset_state(&instance->src_down_coeffs, &instance->src_down_state, 0.f);
}

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

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

528
include/bw_dist.h
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@ -34,8 +34,12 @@
* <ul>
* <li>Version <strong>1.0.0</strong>:
* <ul>
* <li>Added initial value argument in
* <li>Added initial input value to
* <code>bw_dist_reset_state()</code>.</li>
* <li>Added <code>bw_dist_reset_state_multi()</code> and updated C++
* API in this regard.</li>
* <li>Now <code>bw_dist_reset_state()</code> returns the initial
* output value.</li>
* <li>Added overloaded C++ <code>reset()</code> functions taking
* arrays as arguments.</li>
* <li>Adjusted internal peak cutoff to more sensible value.</li>
@ -48,6 +52,8 @@
* <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 parameter validity ranges.</li>
* <li>Added debugging code.</li>
* </ul>
* </li>
* <li>Version <strong>0.6.0</strong>:
@ -88,51 +94,86 @@ typedef struct bw_dist_state bw_dist_state;
*
* #### bw_dist_init()
* ```>>> */
static inline void bw_dist_init(bw_dist_coeffs *BW_RESTRICT coeffs);
static inline void bw_dist_init(
bw_dist_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Initializes input parameter values in `coeffs`.
*
* #### bw_dist_set_sample_rate()
* ```>>> */
static inline void bw_dist_set_sample_rate(bw_dist_coeffs *BW_RESTRICT coeffs, float sample_rate);
static inline void bw_dist_set_sample_rate(
bw_dist_coeffs * BW_RESTRICT coeffs,
float sample_rate);
/*! <<<```
* Sets the `sample_rate` (Hz) value in `coeffs`.
*
* #### bw_dist_reset_coeffs()
* ```>>> */
static inline void bw_dist_reset_coeffs(bw_dist_coeffs *BW_RESTRICT coeffs);
static inline void bw_dist_reset_coeffs(
bw_dist_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Resets coefficients in `coeffs` to assume their target values.
*
* #### bw_dist_reset_state()
* ```>>> */
static inline void bw_dist_reset_state(const bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_state *BW_RESTRICT state, float x_0);
static inline float bw_dist_reset_state(
const bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_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`.
* and the initial input value `x_0`.
*
* Returns the corresponding initial output value.
*
* #### bw_dist_reset_state_multi()
* ```>>> */
static inline void bw_dist_reset_state_multi(
const bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_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 `NULL`.
*
* #### bw_dist_update_coeffs_ctrl()
* ```>>> */
static inline void bw_dist_update_coeffs_ctrl(bw_dist_coeffs *BW_RESTRICT coeffs);
static inline void bw_dist_update_coeffs_ctrl(
bw_dist_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers control-rate update of coefficients in `coeffs`.
*
* #### bw_dist_update_coeffs_audio()
* ```>>> */
static inline void bw_dist_update_coeffs_audio(bw_dist_coeffs *BW_RESTRICT coeffs);
static inline void bw_dist_update_coeffs_audio(
bw_dist_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers audio-rate update of coefficients in `coeffs`.
*
* #### bw_dist_process1()
* ```>>> */
static inline float bw_dist_process1(const bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_state *BW_RESTRICT state, float x);
static inline float bw_dist_process1(
const bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_state * BW_RESTRICT state,
float x);
/*! <<<```
* Processes one input sample `x` using `coeffs`, while using and updating
* `state`. Returns the corresponding output sample.
*
* #### bw_dist_process()
* ```>>> */
static inline void bw_dist_process(bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples);
static inline void bw_dist_process(
bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_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
@ -140,7 +181,13 @@ static inline void bw_dist_process(bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_s
*
* #### bw_dist_process_multi()
* ```>>> */
static inline void bw_dist_process_multi(bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_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_dist_process_multi(
bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_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
@ -149,29 +196,68 @@ static inline void bw_dist_process_multi(bw_dist_coeffs *BW_RESTRICT coeffs, bw_
*
* #### bw_dist_set_distortion()
* ```>>> */
static inline void bw_dist_set_distortion(bw_dist_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_dist_set_distortion(
bw_dist_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the distortion (input gain, approximately) to the given `value` in
* [`0.f`, `1.f`] in `coeffs`.
* `coeffs`.
*
* Valid range: [`0.f` (low distortion), `1.f` (high distortion)].
*
* Default value: `0.f`.
*
* #### bw_dist_set_tone()
* ```>>> */
static inline void bw_dist_set_tone(bw_dist_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_dist_set_tone(
bw_dist_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the tone (filter) to the given `value` in [`0.f`, `1.f`] in `coeffs`.
* Sets the tone (filter) to the given `value` in `coeffs`.
*
* Valid range: [`0.f` (low cutoff), `1.f` (high cutoff)].
*
* Default value: `0.5f`.
*
* #### bw_dist_set_volume()
* ```>>> */
static inline void bw_dist_set_volume(bw_dist_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_dist_set_volume(
bw_dist_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the volume (output gain) to the given `value` in [`0.f`, `1.f`] in
* `coeffs`.
* Sets the volume (output gain) to the given `value` in `coeffs`.
*
* Valid range: [`0.f` (silence), `1.f` (max volume)].
*
* Default value: `1.f`.
*
* #### bw_dist_coeffs_is_valid()
* ```>>> */
static inline char bw_dist_coeffs_is_valid(
const bw_dist_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_dist_coeffs`.
*
* #### bw_dist_state_is_valid()
* ```>>> */
static inline char bw_dist_state_is_valid(
const bw_dist_coeffs * BW_RESTRICT coeffs,
const bw_dist_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_dist_state`.
* }}} */
#ifdef __cplusplus
@ -194,17 +280,37 @@ static inline void bw_dist_set_volume(bw_dist_coeffs *BW_RESTRICT coeffs, float
extern "C" {
#endif
#ifdef BW_DEBUG_DEEP
enum bw_dist_coeffs_state {
bw_dist_coeffs_state_invalid,
bw_dist_coeffs_state_init,
bw_dist_coeffs_state_set_sample_rate,
bw_dist_coeffs_state_reset_coeffs
};
#endif
struct bw_dist_coeffs {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
enum bw_dist_coeffs_state state;
uint32_t reset_id;
#endif
// Sub-components
bw_hp1_coeffs hp1_coeffs;
bw_peak_coeffs peak_coeffs;
bw_clip_coeffs clip_coeffs;
bw_satur_coeffs satur_coeffs;
bw_lp1_coeffs lp1_coeffs;
bw_gain_coeffs gain_coeffs;
bw_hp1_coeffs hp1_coeffs;
bw_peak_coeffs peak_coeffs;
bw_clip_coeffs clip_coeffs;
bw_satur_coeffs satur_coeffs;
bw_lp1_coeffs lp1_coeffs;
bw_gain_coeffs gain_coeffs;
};
struct bw_dist_state {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
uint32_t coeffs_reset_id;
#endif
// Sub-components
bw_hp1_state hp1_state;
bw_peak_state peak_state;
@ -213,7 +319,10 @@ struct bw_dist_state {
bw_lp1_state lp1_state;
};
static inline void bw_dist_init(bw_dist_coeffs *BW_RESTRICT coeffs) {
static inline void bw_dist_init(
bw_dist_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
bw_hp1_init(&coeffs->hp1_coeffs);
bw_peak_init(&coeffs->peak_coeffs);
bw_clip_init(&coeffs->clip_coeffs);
@ -229,9 +338,24 @@ static inline void bw_dist_init(bw_dist_coeffs *BW_RESTRICT coeffs) {
bw_satur_set_gain(&coeffs->satur_coeffs, 1.f / 0.7f);
bw_satur_set_gain_compensation(&coeffs->satur_coeffs, 1);
bw_lp1_set_cutoff(&coeffs->lp1_coeffs, 475.f + (20e3f - 475.f) * 0.125f);
#ifdef BW_DEBUG_DEEP
coeffs->hash = bw_hash_sdbm("bw_dist_coeffs");
coeffs->state = bw_dist_coeffs_state_init;
coeffs->reset_id = coeffs->hash + 1;
#endif
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_dist_coeffs_state_init);
}
static inline void bw_dist_set_sample_rate(bw_dist_coeffs *BW_RESTRICT coeffs, float sample_rate) {
static inline void bw_dist_set_sample_rate(
bw_dist_coeffs * BW_RESTRICT coeffs,
float sample_rate) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_init);
BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
bw_hp1_set_sample_rate(&coeffs->hp1_coeffs, sample_rate);
bw_peak_set_sample_rate(&coeffs->peak_coeffs, sample_rate);
bw_clip_set_sample_rate(&coeffs->clip_coeffs, sample_rate);
@ -241,70 +365,275 @@ static inline void bw_dist_set_sample_rate(bw_dist_coeffs *BW_RESTRICT coeffs, f
bw_hp1_reset_coeffs(&coeffs->hp1_coeffs);
bw_clip_reset_coeffs(&coeffs->clip_coeffs);
bw_satur_reset_coeffs(&coeffs->satur_coeffs);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_dist_coeffs_state_set_sample_rate;
#endif
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_dist_coeffs_state_set_sample_rate);
}
static inline void bw_dist_reset_coeffs(bw_dist_coeffs *BW_RESTRICT coeffs) {
static inline void bw_dist_reset_coeffs(
bw_dist_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_set_sample_rate);
bw_peak_reset_coeffs(&coeffs->peak_coeffs);
bw_lp1_reset_coeffs(&coeffs->lp1_coeffs);
bw_gain_reset_coeffs(&coeffs->gain_coeffs);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_dist_coeffs_state_reset_coeffs;
coeffs->reset_id++;
#endif
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_dist_coeffs_state_reset_coeffs);
}
static inline void bw_dist_reset_state(const bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_state *BW_RESTRICT state, float x_0) {
bw_hp1_reset_state(&coeffs->hp1_coeffs, &state->hp1_state, x_0); //...
bw_peak_reset_state(&coeffs->peak_coeffs, &state->peak_state, 0.f);
bw_clip_reset_state(&coeffs->clip_coeffs, &state->clip_state);
bw_satur_reset_state(&coeffs->satur_coeffs, &state->satur_state);
bw_lp1_reset_state(&coeffs->lp1_coeffs, &state->lp1_state, 0.f);
static inline float bw_dist_reset_state(
const bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_state * BW_RESTRICT state,
float x_0) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(bw_is_finite(x_0));
float y = bw_hp1_reset_state(&coeffs->hp1_coeffs, &state->hp1_state, x_0);
y = bw_peak_reset_state(&coeffs->peak_coeffs, &state->peak_state, y);
y = bw_clip_reset_state(&coeffs->clip_coeffs, &state->clip_state, y);
y = bw_satur_reset_state(&coeffs->satur_coeffs, &state->satur_state, y);
y = bw_lp1_reset_state(&coeffs->lp1_coeffs, &state->lp1_state, y);
y = bw_gain_get_gain_cur(&coeffs->gain_coeffs) * y;
#ifdef BW_DEBUG_DEEP
state->hash = bw_hash_sdbm("bw_dist_state");
state->coeffs_reset_id = coeffs->reset_id;
#endif
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_dist_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(y));
return y;
}
static inline void bw_dist_update_coeffs_ctrl(bw_dist_coeffs *BW_RESTRICT coeffs) {
static inline void bw_dist_reset_state_multi(
const bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_state * BW_RESTRICT const * BW_RESTRICT state,
const float * x_0,
float * y_0,
size_t n_channels) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(x_0 != NULL);
if (y_0 != NULL)
for (size_t i = 0; i < n_channels; i++)
y_0[i] = bw_dist_reset_state(coeffs, state[i], x_0[i]);
else
for (size_t i = 0; i < n_channels; i++)
bw_dist_reset_state(coeffs, state[i], x_0[i]);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(y_0 != NULL ? bw_has_only_finite(y_0, n_channels) : 1);
}
static inline void bw_dist_update_coeffs_ctrl(
bw_dist_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
bw_peak_update_coeffs_ctrl(&coeffs->peak_coeffs);
bw_lp1_update_coeffs_ctrl(&coeffs->lp1_coeffs);
bw_gain_update_coeffs_ctrl(&coeffs->gain_coeffs);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
}
static inline void bw_dist_update_coeffs_audio(bw_dist_coeffs *BW_RESTRICT coeffs) {
static inline void bw_dist_update_coeffs_audio(
bw_dist_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
bw_peak_update_coeffs_audio(&coeffs->peak_coeffs);
bw_lp1_update_coeffs_audio(&coeffs->lp1_coeffs);
bw_gain_update_coeffs_audio(&coeffs->gain_coeffs);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
}
static inline float bw_dist_process1(const bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_state *BW_RESTRICT state, float x) {
static inline float bw_dist_process1(
const bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_state * BW_RESTRICT state,
float x) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_dist_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(x));
float y = bw_hp1_process1(&coeffs->hp1_coeffs, &state->hp1_state, x);
y = bw_peak_process1(&coeffs->peak_coeffs, &state->peak_state, y);
y = bw_clip_process1_comp(&coeffs->clip_coeffs, &state->clip_state, y);
y = bw_satur_process1_comp(&coeffs->satur_coeffs, &state->satur_state, y);
y = bw_lp1_process1(&coeffs->lp1_coeffs, &state->lp1_state, y);
return bw_gain_process1(&coeffs->gain_coeffs, y);
y = bw_gain_process1(&coeffs->gain_coeffs, y);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_dist_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(y));
return y;
}
static inline void bw_dist_process(bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples) {
static inline void bw_dist_process(
bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_state * BW_RESTRICT state,
const float * x,
float * y,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_dist_state_is_valid(coeffs, state));
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
BW_ASSERT(y != NULL);
bw_dist_update_coeffs_ctrl(coeffs);
for (size_t i = 0; i < n_samples; i++) {
bw_dist_update_coeffs_audio(coeffs);
y[i] = bw_dist_process1(coeffs, state, x[i]);
}
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_dist_state_is_valid(coeffs, state));
BW_ASSERT_DEEP(bw_has_only_finite(y, n_samples));
}
static inline void bw_dist_process_multi(bw_dist_coeffs *BW_RESTRICT coeffs, bw_dist_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_dist_process_multi(
bw_dist_coeffs * BW_RESTRICT coeffs,
bw_dist_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_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(x != NULL);
BW_ASSERT(y != NULL);
bw_dist_update_coeffs_ctrl(coeffs);
for (size_t i = 0; i < n_samples; i++) {
bw_dist_update_coeffs_audio(coeffs);
for (size_t j = 0; j < n_channels; j++)
y[j][i] = bw_dist_process1(coeffs, state[j], x[j][i]);
}
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_reset_coeffs);
}
static inline void bw_dist_set_distortion(bw_dist_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_dist_set_distortion(
bw_dist_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= 0.f && value <= 1.f);
bw_peak_set_peak_gain_dB(&coeffs->peak_coeffs, 60.f * value);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_init);
}
static inline void bw_dist_set_tone(bw_dist_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_dist_set_tone(
bw_dist_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= 0.f && value <= 1.f);
bw_lp1_set_cutoff(&coeffs->lp1_coeffs, 475.f + (20e3f - 475.f) * value * value * value);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_init);
}
static inline void bw_dist_set_volume(bw_dist_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_dist_set_volume(
bw_dist_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= 0.f && value <= 1.f);
bw_gain_set_gain_lin(&coeffs->gain_coeffs, value * value * value);
BW_ASSERT_DEEP(bw_dist_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_dist_coeffs_state_init);
}
static inline char bw_dist_coeffs_is_valid(
const bw_dist_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
#ifdef BW_DEBUG_DEEP
if (coeffs->hash != bw_hash_sdbm("bw_dist_coeffs"))
return 0;
if (coeffs->state < bw_dist_coeffs_state_init || coeffs->state > bw_dist_coeffs_state_reset_coeffs)
return 0;
#endif
return bw_hp1_coeffs_is_valid(&coeffs->hp1_coeffs)
&& bw_peak_coeffs_is_valid(&coeffs->peak_coeffs)
&& bw_clip_coeffs_is_valid(&coeffs->clip_coeffs)
&& bw_satur_coeffs_is_valid(&coeffs->satur_coeffs)
&& bw_lp1_coeffs_is_valid(&coeffs->lp1_coeffs)
&& bw_gain_coeffs_is_valid(&coeffs->gain_coeffs);
}
static inline char bw_dist_state_is_valid(
const bw_dist_coeffs * BW_RESTRICT coeffs,
const bw_dist_state * BW_RESTRICT state) {
BW_ASSERT(state != NULL);
#ifdef BW_DEBUG_DEEP
if (state->hash != bw_hash_sdbm("bw_dist_state"))
return 0;
if (coeffs != NULL && coeffs->reset_id != state->coeffs_reset_id)
return 0;
#endif
(void)coeffs;
return bw_hp1_state_is_valid(&coeffs->hp1_coeffs, &state->hp1_state)
&& bw_peak_state_is_valid(&coeffs->peak_coeffs, &state->peak_state)
&& bw_clip_state_is_valid(&coeffs->clip_coeffs, &state->clip_state)
&& bw_satur_state_is_valid(&coeffs->satur_coeffs, &state->satur_state)
&& bw_lp1_state_is_valid(&coeffs->lp1_coeffs, &state->lp1_state);
}
#ifdef __cplusplus
@ -324,22 +653,43 @@ class Dist {
public:
Dist();
void setSampleRate(float sampleRate);
void reset(float x_0 = 0.f);
void reset(const float *BW_RESTRICT x_0);
void reset(const std::array<float, N_CHANNELS> x_0);
void process(
const float * const *x,
float * const *y,
size_t nSamples);
void process(
const std::array<const float *, N_CHANNELS> x,
const std::array<float *, N_CHANNELS> y,
size_t nSamples);
void setSampleRate(
float sampleRate);
void setDistortion(float value);
void setTone(float value);
void setVolume(float value);
void reset(
float x0 = 0.f,
float * BW_RESTRICT y0 = nullptr);
void reset(
float x0,
std::array<float, N_CHANNELS> * BW_RESTRICT y0);
void reset(
const float * x0,
float * y0 = nullptr);
void reset(
std::array<float, N_CHANNELS> x0,
std::array<float, N_CHANNELS> * BW_RESTRICT y0 = nullptr);
void process(
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 setDistortion(
float value);
void setTone(
float value);
void setVolume(
float value);
/*! <<<...
* }
* ```
@ -351,9 +701,9 @@ public:
* change at any time in future versions. Please, do not use it directly. */
private:
bw_dist_coeffs coeffs;
bw_dist_state states[N_CHANNELS];
bw_dist_state *BW_RESTRICT statesP[N_CHANNELS];
bw_dist_coeffs coeffs;
bw_dist_state states[N_CHANNELS];
bw_dist_state * BW_RESTRICT statesP[N_CHANNELS];
};
template<size_t N_CHANNELS>
@ -364,57 +714,77 @@ inline Dist<N_CHANNELS>::Dist() {
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::setSampleRate(float sampleRate) {
inline void Dist<N_CHANNELS>::setSampleRate(
float sampleRate) {
bw_dist_set_sample_rate(&coeffs, sampleRate);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::reset(float x_0) {
inline void Dist<N_CHANNELS>::reset(
float x0,
float * BW_RESTRICT y0) {
bw_dist_reset_coeffs(&coeffs);
for (size_t i = 0; i < N_CHANNELS; i++)
bw_dist_reset_state(&coeffs, states + i, x_0);
if (y0 != nullptr)
for (size_t i = 0; i < N_CHANNELS; i++)
y0[i] = bw_dist_reset_state(&coeffs, states + i, x0);
else
for (size_t i = 0; i < N_CHANNELS; i++)
bw_dist_reset_state(&coeffs, states + i, x0);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::reset(const float *BW_RESTRICT x_0) {
bw_dist_reset_coeffs(&coeffs);
for (size_t i = 0; i < N_CHANNELS; i++)
bw_dist_reset_state(&coeffs, states + i, x_0[i]);
inline void Dist<N_CHANNELS>::reset(
float x0,
std::array<float, N_CHANNELS> * BW_RESTRICT y0) {
reset(x0, y0 != nullptr ? y0->data() : nullptr);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::reset(const std::array<float, N_CHANNELS> x_0) {
reset(x_0.data());
inline void Dist<N_CHANNELS>::reset(
const float * x0,
float * y0) {
bw_dist_reset_coeffs(&coeffs);
bw_dist_reset_state_multi(&coeffs, statesP, x0, y0, N_CHANNELS);
}
template<size_t N_CHANNELS>
inline void Dist<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);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::process(
const float * const *x,
float * const *y,
size_t nSamples) {
const float * const * x,
float * const * y,
size_t nSamples) {
bw_dist_process_multi(&coeffs, statesP, x, y, N_CHANNELS, nSamples);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::process(
const std::array<const float *, N_CHANNELS> x,
const std::array<float *, N_CHANNELS> y,
size_t nSamples) {
std::array<const float *, N_CHANNELS> x,
std::array<float *, N_CHANNELS> y,
size_t nSamples) {
process(x.data(), y.data(), nSamples);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::setDistortion(float value) {
inline void Dist<N_CHANNELS>::setDistortion(
float value) {
bw_dist_set_distortion(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::setTone(float value) {
inline void Dist<N_CHANNELS>::setTone(
float value) {
bw_dist_set_tone(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void Dist<N_CHANNELS>::setVolume(float value) {
inline void Dist<N_CHANNELS>::setVolume(
float value) {
bw_dist_set_volume(&coeffs, value);
}

5
include/bw_wah.h
View File

@ -216,8 +216,9 @@ static inline void bw_wah_set_wah(
bw_wah_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the wah pedal position to the given `value` in [`0.f` (low cutoff),
* `1.f` (high cutoff)] in `coeffs`.
* Sets the wah pedal position to the given `value`.
*
* Valid range: [`0.f` (low cutoff), `1.f` (high cutoff)].
*
* Default value: `0.5f`.
*