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finalize bw_{pan,ppm} + examples + fix bw_env_follow debug, bw_wah reset

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This commit is contained in:
Stefano D'Angelo 2023-09-15 21:05:50 +02:00
parent 7b65b75d92
commit 99fc95a693
8 changed files with 661 additions and 113 deletions
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5
TODO
View File

@ -19,9 +19,6 @@ code:
specific:
* bw_comb: should also modulate feedback?
* bw_comb: integer target delay values?
* prewarp control in all derived filtering modules
* src inside distortions? w/ control from outside?
* better src filter
finally:
* debugging - also check outputs different (incl bw_buf)
* check all examples again
@ -76,6 +73,8 @@ code:
* process allow NULL output?
* #if __cplusplus >= 201103L ? - see https://stackoverflow.com/questions/5047971/how-do-i-check-for-c11-support
* get current compression level, knee
* src inside distortions? w/ control from outside?
* make all outs nullable?
build system:
* make makefiles handle paths with spaces etc

4
examples/fx_pan/src/bw_example_fx_pan.c
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@ -33,8 +33,8 @@ void bw_example_fx_pan_set_sample_rate(bw_example_fx_pan *instance, float sample
void bw_example_fx_pan_reset(bw_example_fx_pan *instance) {
bw_pan_reset_coeffs(&instance->pan_coeffs);
bw_ppm_reset_coeffs(&instance->ppm_coeffs);
bw_ppm_reset_state(&instance->ppm_coeffs, &instance->ppm_l_state);
bw_ppm_reset_state(&instance->ppm_coeffs, &instance->ppm_r_state);
bw_ppm_reset_state(&instance->ppm_coeffs, &instance->ppm_l_state, 0.f);
bw_ppm_reset_state(&instance->ppm_coeffs, &instance->ppm_r_state, 0.f);
}
void bw_example_fx_pan_process(bw_example_fx_pan *instance, const float** x, float** y, int n_samples) {

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

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

4
include/bw_env_follow.h
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@ -589,9 +589,7 @@ static inline char bw_env_follow_state_is_valid(
return 0;
#endif
(void)coeffs;
return bw_one_pole_state_is_valid(&coeffs->one_pole_coeffs, &state->one_pole_state);
return bw_one_pole_state_is_valid(coeffs ? &coeffs->one_pole_coeffs : NULL, &state->one_pole_state);
}
#ifdef __cplusplus

283
include/bw_pan.h
View File

@ -39,6 +39,8 @@
* <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>:
@ -81,37 +83,47 @@ typedef struct bw_pan_coeffs bw_pan_coeffs;
*
* #### bw_pan_init()
* ```>>> */
static inline void bw_pan_init(bw_pan_coeffs *BW_RESTRICT coeffs);
static inline void bw_pan_init(
bw_pan_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Initializes input parameter values in `coeffs`.
*
* #### bw_pan_set_sample_rate()
* ```>>> */
static inline void bw_pan_set_sample_rate(bw_pan_coeffs *BW_RESTRICT coeffs, float sample_rate);
static inline void bw_pan_set_sample_rate(
bw_pan_coeffs * BW_RESTRICT coeffs,
float sample_rate);
/*! <<<```
* Sets the `sample_rate` (Hz) value in `coeffs`.
*
* #### bw_pan_reset_coeffs()
* ```>>> */
static inline void bw_pan_reset_coeffs(bw_pan_coeffs *BW_RESTRICT coeffs);
static inline void bw_pan_reset_coeffs(
bw_pan_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Resets coefficients in `coeffs` to assume their target values.
*
* #### bw_pan_update_coeffs_ctrl()
* ```>>> */
static inline void bw_pan_update_coeffs_ctrl(bw_pan_coeffs *BW_RESTRICT coeffs);
static inline void bw_pan_update_coeffs_ctrl(
bw_pan_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers control-rate update of coefficients in `coeffs`.
*
* #### bw_pan_update_coeffs_audio()
* ```>>> */
static inline void bw_pan_update_coeffs_audio(bw_pan_coeffs *BW_RESTRICT coeffs);
static inline void bw_pan_update_coeffs_audio(
bw_pan_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers audio-rate update of coefficients in `coeffs`.
*
* #### bw_pan_process1()
* ```>>> */
static inline void bw_pan_process1(const bw_pan_coeffs *BW_RESTRICT coeffs, float x, float *BW_RESTRICT y_l, float *BW_RESTRICT y_r);
static inline void bw_pan_process1(
const bw_pan_coeffs * BW_RESTRICT coeffs,
float x,
float * BW_RESTRICT y_l,
float * BW_RESTRICT y_r);
/*! <<<```
* Processes one input sample `x` using `coeffs`, while using and updating
* `state`. The left and right output samples are put into `y_l` (left) and
@ -119,7 +131,12 @@ static inline void bw_pan_process1(const bw_pan_coeffs *BW_RESTRICT coeffs, floa
*
* #### bw_pan_process()
* ```>>> */
static inline void bw_pan_process(bw_pan_coeffs *BW_RESTRICT coeffs, const float *x, float *y_l, float *y_r, size_t n_samples);
static inline void bw_pan_process(
bw_pan_coeffs * BW_RESTRICT coeffs,
const float * x,
float * y_l,
float * y_r,
size_t n_samples);
/*! <<<```
* Processes the first `n_samples` of the input buffer `x` and fills the
* first `n_samples` of the output buffers `y_l` (left) and `y_r` (right),
@ -127,7 +144,13 @@ static inline void bw_pan_process(bw_pan_coeffs *BW_RESTRICT coeffs, const float
*
* #### bw_pan_process_multi()
* ```>>> */
static inline void bw_pan_process_multi(bw_pan_coeffs *BW_RESTRICT coeffs, const float * const *x, float * const *y_l, float * const *y_r, size_t n_channels, size_t n_samples);
static inline void bw_pan_process_multi(
bw_pan_coeffs * BW_RESTRICT coeffs,
const float * const * x,
float * const * y_l,
float * const * y_r,
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_l`
@ -136,12 +159,28 @@ static inline void bw_pan_process_multi(bw_pan_coeffs *BW_RESTRICT coeffs, const
*
* #### bw_pan_set_pan()
* ```>>> */
static inline void bw_pan_set_pan(bw_pan_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_pan_set_pan(
bw_pan_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the panning `value`, where `-1.f` corresponds to hard left pan, `0.f`
* to center pan, and `1.f` to hard right pan.
*
* Valid range: [`-1.f` (hard left pan), `1.f` (hard right pan)].
*
* Default value: `0.f`.
*
* #### bw_pan_coeffs_is_valid()
* ```>>> */
static inline char bw_pan_coeffs_is_valid(
const bw_pan_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_pan_coeffs`.
* }}} */
#ifdef __cplusplus
@ -160,28 +199,67 @@ static inline void bw_pan_set_pan(bw_pan_coeffs *BW_RESTRICT coeffs, float value
extern "C" {
#endif
#ifdef BW_DEBUG_DEEP
enum bw_pan_coeffs_state {
bw_pan_coeffs_state_invalid,
bw_pan_coeffs_state_init,
bw_pan_coeffs_state_set_sample_rate,
bw_pan_coeffs_state_reset_coeffs
};
#endif
struct bw_pan_coeffs {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
enum bw_pan_coeffs_state state;
#endif
// Sub-components
bw_gain_coeffs l_coeffs;
bw_gain_coeffs r_coeffs;
bw_gain_coeffs l_coeffs;
bw_gain_coeffs r_coeffs;
// Parameters
float pan;
float pan_prev;
float pan;
float pan_prev;
};
static inline void bw_pan_init(bw_pan_coeffs *BW_RESTRICT coeffs) {
static inline void bw_pan_init(
bw_pan_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
bw_gain_init(&coeffs->l_coeffs);
bw_gain_init(&coeffs->r_coeffs);
coeffs->pan = 0.f;
#ifdef BW_DEBUG_DEEP
coeffs->hash = bw_hash_sdbm("bw_pan_coeffs");
coeffs->state = bw_pan_coeffs_state_init;
#endif
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_pan_coeffs_state_init);
}
static inline void bw_pan_set_sample_rate(bw_pan_coeffs *BW_RESTRICT coeffs, float sample_rate) {
static inline void bw_pan_set_sample_rate(
bw_pan_coeffs * BW_RESTRICT coeffs,
float sample_rate) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_init);
BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
bw_gain_set_sample_rate(&coeffs->l_coeffs, sample_rate);
bw_gain_set_sample_rate(&coeffs->r_coeffs, sample_rate);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_pan_coeffs_state_set_sample_rate;
#endif
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_pan_coeffs_state_set_sample_rate);
}
static inline void bw_pan_do_update_coeffs(bw_pan_coeffs *BW_RESTRICT coeffs, char force) {
static inline void bw_pan_do_update_coeffs(
bw_pan_coeffs * BW_RESTRICT coeffs,
char force) {
if (force || coeffs->pan != coeffs->pan_prev) {
const float l = 0.7071067811865477f + coeffs->pan * (-0.5f + coeffs->pan * -0.20710678118654768f);
bw_gain_set_gain_lin(&coeffs->l_coeffs, l);
@ -190,47 +268,157 @@ static inline void bw_pan_do_update_coeffs(bw_pan_coeffs *BW_RESTRICT coeffs, ch
}
}
static inline void bw_pan_reset_coeffs(bw_pan_coeffs *BW_RESTRICT coeffs) {
static inline void bw_pan_reset_coeffs(
bw_pan_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_set_sample_rate);
bw_pan_do_update_coeffs(coeffs, 1);
bw_gain_reset_coeffs(&coeffs->l_coeffs);
bw_gain_reset_coeffs(&coeffs->r_coeffs);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_pan_coeffs_state_reset_coeffs;
#endif
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_pan_coeffs_state_reset_coeffs);
}
static inline void bw_pan_update_coeffs_ctrl(bw_pan_coeffs *BW_RESTRICT coeffs) {
static inline void bw_pan_update_coeffs_ctrl(
bw_pan_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
bw_pan_do_update_coeffs(coeffs, 0);
bw_gain_update_coeffs_ctrl(&coeffs->l_coeffs);
bw_gain_update_coeffs_ctrl(&coeffs->r_coeffs);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
}
static inline void bw_pan_update_coeffs_audio(bw_pan_coeffs *BW_RESTRICT coeffs) {
static inline void bw_pan_update_coeffs_audio(
bw_pan_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
bw_gain_update_coeffs_audio(&coeffs->l_coeffs);
bw_gain_update_coeffs_audio(&coeffs->r_coeffs);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
}
static inline void bw_pan_process1(const bw_pan_coeffs *BW_RESTRICT coeffs, float x, float *BW_RESTRICT y_l, float *BW_RESTRICT y_r) {
static inline void bw_pan_process1(
const bw_pan_coeffs * BW_RESTRICT coeffs,
float x,
float * BW_RESTRICT y_l,
float * BW_RESTRICT y_r) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
BW_ASSERT(bw_is_finite(x));
*y_l = bw_gain_process1(&coeffs->l_coeffs, x);
*y_r = bw_gain_process1(&coeffs->r_coeffs, x);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
BW_ASSERT(bw_is_finite(*y_l));
BW_ASSERT(bw_is_finite(*y_r));
}
static inline void bw_pan_process(bw_pan_coeffs *BW_RESTRICT coeffs, const float *x, float *y_l, float *y_r, size_t n_samples) {
static inline void bw_pan_process(
bw_pan_coeffs * BW_RESTRICT coeffs,
const float * x,
float * y_l,
float * y_r,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
BW_ASSERT(y_l != NULL);
BW_ASSERT(y_r != NULL);
bw_pan_update_coeffs_ctrl(coeffs);
for (size_t i = 0; i < n_samples; i++) {
bw_pan_update_coeffs_audio(coeffs);
bw_pan_process1(coeffs, x[i], y_l + i, y_r + i);
}
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_has_only_finite(y_l, n_samples));
BW_ASSERT_DEEP(bw_has_only_finite(y_r, n_samples));
}
static inline void bw_pan_process_multi(bw_pan_coeffs *BW_RESTRICT coeffs, const float * const *x, float * const *y_l, float * const *y_r, size_t n_channels, size_t n_samples) {
static inline void bw_pan_process_multi(
bw_pan_coeffs * BW_RESTRICT coeffs,
const float * const * x,
float * const * y_l,
float * const * y_r,
size_t n_channels,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
BW_ASSERT(x != NULL);
BW_ASSERT(y_l != NULL);
BW_ASSERT(y_r != NULL);
bw_pan_update_coeffs_ctrl(coeffs);
for (size_t i = 0; i < n_samples; i++) {
bw_pan_update_coeffs_audio(coeffs);
for (size_t j = 0; j < n_channels; j++)
bw_pan_process1(coeffs, x[j][i], y_l[j] + i, y_r[j] + i);
}
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_reset_coeffs);
}
static inline void bw_pan_set_pan(bw_pan_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_pan_set_pan(
bw_pan_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= -1.f && value <= 1.f);
coeffs->pan = value;
BW_ASSERT_DEEP(bw_pan_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_pan_coeffs_state_init);
}
static inline char bw_pan_coeffs_is_valid(
const bw_pan_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
#ifdef BW_DEBUG_DEEP
if (coeffs->hash != bw_hash_sdbm("bw_pan_coeffs"))
return 0;
if (coeffs->state < bw_pan_coeffs_state_init || coeffs->state > bw_pan_coeffs_state_reset_coeffs)
return 0;
#endif
if (!bw_is_finite(coeffs->pan) || coeffs->pan < -1.f || coeffs->pan > 1.f)
return 0;
#ifdef BW_DEBUG_DEEP
if (coeffs->state >= bw_pan_coeffs_state_reset_coeffs) {
if (!bw_is_finite(coeffs->pan_prev) || coeffs->pan_prev < -1.f || coeffs->pan_prev > 1.f)
return 0;
}
#endif
return bw_gain_coeffs_is_valid(&coeffs->l_coeffs) && bw_gain_coeffs_is_valid(&coeffs->r_coeffs);
}
#ifdef __cplusplus
@ -250,20 +438,25 @@ class Pan {
public:
Pan();
void setSampleRate(float sampleRate);
void setSampleRate(
float sampleRate);
void reset();
void process(
const float * const *x,
float * const *y_l,
float * const *y_r,
size_t nSamples);
const float * const * x,
float * const * yL,
float * const * yR,
size_t nSamples);
void process(
std::array<const float *, N_CHANNELS> x,
std::array<float *, N_CHANNELS> y_l,
std::array<float *, N_CHANNELS> y_r,
size_t nSamples);
std::array<float *, N_CHANNELS> yL,
std::array<float *, N_CHANNELS> yR,
size_t nSamples);
void setPan(float value);
void setPan(
float value);
/*! <<<...
* }
* ```
@ -275,7 +468,7 @@ public:
* change at any time in future versions. Please, do not use it directly. */
private:
bw_pan_coeffs coeffs;
bw_pan_coeffs coeffs;
};
template<size_t N_CHANNELS>
@ -284,7 +477,8 @@ inline Pan<N_CHANNELS>::Pan() {
}
template<size_t N_CHANNELS>
inline void Pan<N_CHANNELS>::setSampleRate(float sampleRate) {
inline void Pan<N_CHANNELS>::setSampleRate(
float sampleRate) {
bw_pan_set_sample_rate(&coeffs, sampleRate);
}
@ -295,24 +489,25 @@ inline void Pan<N_CHANNELS>::reset() {
template<size_t N_CHANNELS>
inline void Pan<N_CHANNELS>::process(
const float * const *x,
float * const *y_l,
float * const *y_r,
size_t nSamples) {
bw_pan_process_multi(&coeffs, x, y_l, y_r, N_CHANNELS, nSamples);
const float * const * x,
float * const * yL,
float * const * yR,
size_t nSamples) {
bw_pan_process_multi(&coeffs, x, yL, yR, N_CHANNELS, nSamples);
}
template<size_t N_CHANNELS>
inline void Pan<N_CHANNELS>::process(
std::array<const float *, N_CHANNELS> x,
std::array<float *, N_CHANNELS> y_l,
std::array<float *, N_CHANNELS> y_r,
size_t nSamples) {
process(x.data(), y_l.data(), y_r.data(), nSamples);
std::array<float *, N_CHANNELS> yL,
std::array<float *, N_CHANNELS> yR,
size_t nSamples) {
process(x.data(), yL.data(), yR.data(), nSamples);
}
template<size_t N_CHANNELS>
inline void Pan<N_CHANNELS>::setPan(float value) {
inline void Pan<N_CHANNELS>::setPan(
float value) {
bw_pan_set_pan(&coeffs, value);
}

469
include/bw_ppm.h
View File

@ -32,7 +32,15 @@
* <ul>
* <li>Version <strong>1.0.0</strong>:
* <ul>
* <li>Enforced minimum output value `-600.f`.</li>
* <li>Enforced minimum output value <code>-600.f</code>.</li>
* <li>Added initial input value to
* <code>bw_ppm_reset_state()</code>.</li>
* <li>Added <code>bw_ppm_reset_state_multi()</code> and updated C++
* API in this regard.</li>
* <li>Now <code>bw_ppm_reset_state()</code> returns the initial output
* value.</li>
* <li>Added overloaded C++ <code>reset()</code> functions taking
* arrays as arguments.</li>
* <li><code>bw_ppm_process()</code> and
* <code>bw_ppm_process_multi()</code> now use <code>size_t</code>
* to count samples and channels.</li>
@ -90,43 +98,74 @@ typedef struct bw_ppm_state bw_ppm_state;
*
* #### bw_ppm_init()
* ```>>> */
static inline void bw_ppm_init(bw_ppm_coeffs *BW_RESTRICT coeffs);
static inline void bw_ppm_init(
bw_ppm_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Initializes input parameter values in `coeffs`.
*
* #### bw_ppm_set_sample_rate()
* ```>>> */
static inline void bw_ppm_set_sample_rate(bw_ppm_coeffs *BW_RESTRICT coeffs, float sample_rate);
static inline void bw_ppm_set_sample_rate(
bw_ppm_coeffs * BW_RESTRICT coeffs,
float sample_rate);
/*! <<<```
* Sets the `sample_rate` (Hz) value in `coeffs`.
*
* #### bw_ppm_reset_coeffs()
* ```>>> */
static inline void bw_ppm_reset_coeffs(bw_ppm_coeffs *BW_RESTRICT coeffs);
static inline void bw_ppm_reset_coeffs(
bw_ppm_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Resets coefficients in `coeffs` to assume their target values.
*
* #### bw_ppm_reset_state()
* ```>>> */
static inline void bw_ppm_reset_state(const bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_state *BW_RESTRICT state);
static inline float bw_ppm_reset_state(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_state * BW_RESTRICT state,
float x_0);
/*! <<<```
* Resets the given `state` to its initial values using the given `coeffs`.
* Resets the given `state` to its initial values using the given `coeffs`
* and the initial input value `x_0`.
*
* Returns the corresponding initial output value.
*
* #### bw_ppm_reset_state_multi()
* ```>>> */
static inline void bw_ppm_reset_state_multi(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_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_ppm_update_coeffs_ctrl()
* ```>>> */
static inline void bw_ppm_update_coeffs_ctrl(bw_ppm_coeffs *BW_RESTRICT coeffs);
static inline void bw_ppm_update_coeffs_ctrl(
bw_ppm_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers control-rate update of coefficients in `coeffs`.
*
* #### bw_ppm_update_coeffs_audio()
* ```>>> */
static inline void bw_ppm_update_coeffs_audio(bw_ppm_coeffs *BW_RESTRICT coeffs);
static inline void bw_ppm_update_coeffs_audio(
bw_ppm_coeffs * BW_RESTRICT coeffs);
/*! <<<```
* Triggers audio-rate update of coefficients in `coeffs`.
*
* #### bw_ppm_process1()
* ```>>> */
static inline float bw_ppm_process1(const bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_state *BW_RESTRICT state, float x);
static inline float bw_ppm_process1(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_state * BW_RESTRICT state,
float x);
/*! <<<```
* Processes one input sample `x` using `coeffs`, while using and updating
* `state`. Returns the corresponding output sample value in dBSF (minimum
@ -134,7 +173,12 @@ static inline float bw_ppm_process1(const bw_ppm_coeffs *BW_RESTRICT coeffs, bw_
*
* #### bw_ppm_process()
* ```>>> */
static inline void bw_ppm_process(bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples);
static inline void bw_ppm_process(
bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_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
@ -146,30 +190,69 @@ static inline void bw_ppm_process(bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_stat
*
* #### bw_ppm_process_multi()
* ```>>> */
static inline void bw_ppm_process_multi(bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_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_ppm_process_multi(
bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_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
* using and updating both the common `coeffs` and each of the `n_channels`
* `state`s (control and audio rate).
*
*
* Output sample values are in dBFS (minimum `-600.f`).
*
* `y` or any element of `y` may be `NULL`.
*
* #### bw_ppm_set_integration_time()
* ```>>> */
static inline void bw_ppm_set_integration_tau(bw_ppm_coeffs *BW_RESTRICT coeffs, float value);
static inline void bw_ppm_set_integration_tau(
bw_ppm_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the upgoing (integration) time constant in `coeffs` to `value` (s).
*
* `value` must be non-negative.
*
* Default value: `0.f`.
*
* #### bw_ppm_get_y_z1()
* ```>>> */
static inline float bw_ppm_get_y_z1(const bw_ppm_state *BW_RESTRICT state);
static inline float bw_ppm_get_y_z1(
const bw_ppm_state * BW_RESTRICT state);
/*! <<<```
* Returns the last output sample as stored in `state`.
*
* #### bw_ppm_coeffs_is_valid()
* ```>>> */
static inline char bw_ppm_coeffs_is_valid(
const bw_ppm_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_ppm_coeffs`.
*
* #### bw_ppm_state_is_valid()
* ```>>> */
static inline char bw_ppm_state_is_valid(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
const bw_ppm_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_ppm_state`.
* }}} */
#ifdef __cplusplus
@ -187,50 +270,198 @@ static inline float bw_ppm_get_y_z1(const bw_ppm_state *BW_RESTRICT state);
extern "C" {
#endif
#ifdef BW_DEBUG_DEEP
enum bw_ppm_coeffs_state {
bw_ppm_coeffs_state_invalid,
bw_ppm_coeffs_state_init,
bw_ppm_coeffs_state_set_sample_rate,
bw_ppm_coeffs_state_reset_coeffs
};
#endif
struct bw_ppm_coeffs {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
enum bw_ppm_coeffs_state state;
uint32_t reset_id;
#endif
// Sub-components
bw_env_follow_coeffs env_follow_coeffs;
bw_env_follow_coeffs env_follow_coeffs;
};
struct bw_ppm_state {
#ifdef BW_DEBUG_DEEP
uint32_t hash;
uint32_t coeffs_reset_id;
#endif
// Sub-components
bw_env_follow_state env_follow_state;
// States
float y_z1;
};
static inline void bw_ppm_init(bw_ppm_coeffs *BW_RESTRICT coeffs) {
static inline void bw_ppm_init(
bw_ppm_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
bw_env_follow_init(&coeffs->env_follow_coeffs);
bw_env_follow_set_release_tau(&coeffs->env_follow_coeffs, 0.738300619235528f);
#ifdef BW_DEBUG_DEEP
coeffs->hash = bw_hash_sdbm("bw_ppm_coeffs");
coeffs->state = bw_ppm_coeffs_state_init;
coeffs->reset_id = coeffs->hash + 1;
#endif
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_ppm_coeffs_state_init);
}
static inline void bw_ppm_set_sample_rate(bw_ppm_coeffs *BW_RESTRICT coeffs, float sample_rate) {
static inline void bw_ppm_set_sample_rate(
bw_ppm_coeffs * BW_RESTRICT coeffs,
float sample_rate) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_init);
BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
bw_env_follow_set_sample_rate(&coeffs->env_follow_coeffs, sample_rate);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_ppm_coeffs_state_set_sample_rate;
#endif
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_ppm_coeffs_state_set_sample_rate);
}
static inline void bw_ppm_reset_coeffs(bw_ppm_coeffs *BW_RESTRICT coeffs) {
static inline void bw_ppm_reset_coeffs(
bw_ppm_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_set_sample_rate);
bw_env_follow_reset_coeffs(&coeffs->env_follow_coeffs);
#ifdef BW_DEBUG_DEEP
coeffs->state = bw_ppm_coeffs_state_reset_coeffs;
coeffs->reset_id++;
#endif
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state == bw_ppm_coeffs_state_reset_coeffs);
}
static inline void bw_ppm_reset_state(const bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_state *BW_RESTRICT state) {
bw_env_follow_reset_state(&coeffs->env_follow_coeffs, &state->env_follow_state);
state->y_z1 = -600.f; // minimum, see below
}
static inline float bw_ppm_reset_state(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_state * BW_RESTRICT state,
float x_0) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(bw_is_finite(x_0));
static inline void bw_ppm_update_coeffs_ctrl(bw_ppm_coeffs *BW_RESTRICT coeffs) {
bw_env_follow_update_coeffs_ctrl(&coeffs->env_follow_coeffs);
}
static inline void bw_ppm_update_coeffs_audio(bw_ppm_coeffs *BW_RESTRICT coeffs) {
bw_env_follow_update_coeffs_audio(&coeffs->env_follow_coeffs);
}
static inline float bw_ppm_process1(const bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_state *BW_RESTRICT state, float x) {
const float yl = bw_env_follow_process1(&coeffs->env_follow_coeffs, &state->env_follow_state, x);
const float y = yl >= 1e-30f ? bw_lin2dBf(yl) : -600.f; // -600 dB is quiet enough
const float yl = bw_env_follow_reset_state(&coeffs->env_follow_coeffs, &state->env_follow_state, x_0);
const float y = yl >= 1e-30f ? bw_lin2dBf(yl) : -600.f;
state->y_z1 = y;
#ifdef BW_DEBUG_DEEP
state->hash = bw_hash_sdbm("bw_ppm_state");
state->coeffs_reset_id = coeffs->reset_id;
#endif
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_ppm_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(y));
return y;
}
static inline void bw_ppm_process(bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples) {
static inline void bw_ppm_reset_state_multi(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_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_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_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_ppm_reset_state(coeffs, state[i], x_0[i]);
else
for (size_t i = 0; i < n_channels; i++)
bw_ppm_reset_state(coeffs, state[i], x_0[i]);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(y_0 != NULL ? bw_has_only_finite(y_0, n_channels) : 1);
}
static inline void bw_ppm_update_coeffs_ctrl(
bw_ppm_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
bw_env_follow_update_coeffs_ctrl(&coeffs->env_follow_coeffs);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
}
static inline void bw_ppm_update_coeffs_audio(
bw_ppm_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
bw_env_follow_update_coeffs_audio(&coeffs->env_follow_coeffs);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
}
static inline float bw_ppm_process1(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_state * BW_RESTRICT state,
float x) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_ppm_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(x));
const float yl = bw_env_follow_process1(&coeffs->env_follow_coeffs, &state->env_follow_state, x);
const float y = yl >= 1e-30f ? bw_lin2dBf(yl) : -600.f; // -600 dB is quiet enough
state->y_z1 = y;
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_ppm_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(y));
return y;
}
static inline void bw_ppm_process(
bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_state * BW_RESTRICT state,
const float * x,
float * y,
size_t n_samples) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_ppm_state_is_valid(coeffs, state));
BW_ASSERT(x != NULL);
BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
bw_ppm_update_coeffs_ctrl(coeffs);
if (y != NULL)
for (size_t i = 0; i < n_samples; i++) {
@ -242,9 +473,26 @@ static inline void bw_ppm_process(bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_stat
bw_ppm_update_coeffs_audio(coeffs);
bw_ppm_process1(coeffs, state, x[i]);
}
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_ppm_state_is_valid(coeffs, state));
BW_ASSERT_DEEP(y != NULL ? bw_has_only_finite(y, n_samples) : 1);
}
static inline void bw_ppm_process_multi(bw_ppm_coeffs *BW_RESTRICT coeffs, bw_ppm_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_ppm_process_multi(
bw_ppm_coeffs * BW_RESTRICT coeffs,
bw_ppm_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_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
BW_ASSERT(state != NULL);
BW_ASSERT(x != NULL);
bw_ppm_update_coeffs_ctrl(coeffs);
if (y != NULL)
for (size_t i = 0; i < n_samples; i++) {
@ -261,16 +509,66 @@ static inline void bw_ppm_process_multi(bw_ppm_coeffs *BW_RESTRICT coeffs, bw_pp
for (size_t j = 0; j < n_channels; j++)
bw_ppm_process1(coeffs, state[j], x[j][i]);
}
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_reset_coeffs);
}
static inline void bw_ppm_set_integration_tau(bw_ppm_coeffs *BW_RESTRICT coeffs, float value) {
static inline void bw_ppm_set_integration_tau(
bw_ppm_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != NULL);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_init);
BW_ASSERT(!bw_is_nan(value));
BW_ASSERT(value >= 0.f);
bw_env_follow_set_attack_tau(&coeffs->env_follow_coeffs, value);
BW_ASSERT_DEEP(bw_ppm_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_ppm_coeffs_state_init);
}
static inline float bw_ppm_get_y_z1(const bw_ppm_state *BW_RESTRICT state) {
BW_ASSERT(state != NULL);
BW_ASSERT_DEEP(bw_ppm_state_is_valid(NULL, state));
return state->y_z1;
}
static inline char bw_ppm_coeffs_is_valid(
const bw_ppm_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != NULL);
#ifdef BW_DEBUG_DEEP
if (coeffs->hash != bw_hash_sdbm("bw_ppm_coeffs"))
return 0;
if (coeffs->state < bw_ppm_coeffs_state_init || coeffs->state > bw_ppm_coeffs_state_reset_coeffs)
return 0;
#endif
return bw_env_follow_coeffs_is_valid(&coeffs->env_follow_coeffs);
}
static inline char bw_ppm_state_is_valid(
const bw_ppm_coeffs * BW_RESTRICT coeffs,
const bw_ppm_state * BW_RESTRICT state) {
BW_ASSERT(state != NULL);
#ifdef BW_DEBUG_DEEP
if (state->hash != bw_hash_sdbm("bw_ppm_state"))
return 0;
if (coeffs != NULL && coeffs->reset_id != state->coeffs_reset_id)
return 0;
#endif
if (!bw_is_finite(state->y_z1) || state->y_z1 < -600.f)
return 0.f;
return bw_env_follow_state_is_valid(coeffs ? &coeffs->env_follow_coeffs : NULL, &state->env_follow_state);
}
#ifdef __cplusplus
}
@ -288,20 +586,40 @@ class PPM {
public:
PPM();
void setSampleRate(float sampleRate);
void reset();
void setSampleRate(
float sampleRate);
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);
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 setIntegrationTau(float value);
float getYZ1(size_t channel);
void setIntegrationTau(
float value);
float getYZ1(
size_t channel);
/*! <<<...
* }
* ```
@ -313,9 +631,9 @@ public:
* change at any time in future versions. Please, do not use it directly. */
private:
bw_ppm_coeffs coeffs;
bw_ppm_state states[N_CHANNELS];
bw_ppm_state *BW_RESTRICT statesP[N_CHANNELS];
bw_ppm_coeffs coeffs;
bw_ppm_state states[N_CHANNELS];
bw_ppm_state * BW_RESTRICT statesP[N_CHANNELS];
};
template<size_t N_CHANNELS>
@ -326,40 +644,71 @@ inline PPM<N_CHANNELS>::PPM() {
}
template<size_t N_CHANNELS>
inline void PPM<N_CHANNELS>::setSampleRate(float sampleRate) {
inline void PPM<N_CHANNELS>::setSampleRate(
float sampleRate) {
bw_ppm_set_sample_rate(&coeffs, sampleRate);
}
template<size_t N_CHANNELS>
inline void PPM<N_CHANNELS>::reset() {
inline void PPM<N_CHANNELS>::reset(
float x0,
float * BW_RESTRICT y0) {
bw_ppm_reset_coeffs(&coeffs);
for (size_t i = 0; i < N_CHANNELS; i++)
bw_ppm_reset_state(&coeffs, states + i);
if (y0 != nullptr)
for (size_t i = 0; i < N_CHANNELS; i++)
y0[i] = bw_ppm_reset_state(&coeffs, states + i, x0);
else
for (size_t i = 0; i < N_CHANNELS; i++)
bw_ppm_reset_state(&coeffs, states + i, x0);
}
template<size_t N_CHANNELS>
inline void PPM<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 PPM<N_CHANNELS>::reset(
const float * x0,
float * y0) {
bw_ppm_reset_coeffs(&coeffs);
bw_ppm_reset_state_multi(&coeffs, statesP, x0, y0, N_CHANNELS);
}
template<size_t N_CHANNELS>
inline void PPM<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 PPM<N_CHANNELS>::process(
const float * const *x,
float * const *y,
size_t nSamples) {
const float * const * x,
float * const * y,
size_t nSamples) {
bw_ppm_process_multi(&coeffs, statesP, x, y, N_CHANNELS, nSamples);
}
template<size_t N_CHANNELS>
inline void PPM<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 PPM<N_CHANNELS>::setIntegrationTau(float value) {
inline void PPM<N_CHANNELS>::setIntegrationTau(
float value) {
bw_ppm_set_integration_tau(&coeffs, value);
}
template<size_t N_CHANNELS>
inline float PPM<N_CHANNELS>::getYZ1(size_t channel) {
inline float PPM<N_CHANNELS>::getYZ1(
size_t channel) {
return bw_ppm_get_y_z1(states + channel);
}

3
include/bw_wah.h
View File

@ -366,8 +366,9 @@ static inline float bw_wah_reset_state(
BW_ASSERT_DEEP(bw_wah_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_wah_coeffs_state_reset_coeffs);
BW_ASSERT_DEEP(bw_wah_state_is_valid(coeffs, state));
BW_ASSERT(bw_is_finite(bp));
return 0.f;
return bp;
}
static inline void bw_wah_reset_state_multi(