finalized bw_{sr_reduce,bd_reduce} + examples
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TODO
1
TODO
@ -78,6 +78,7 @@ code:
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* make all outs nullable?
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* make all reset state outs nullable (svf, phase_gen, ...)?
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* ring mod fx module?
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* bitcrusher module?
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build system:
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* make makefiles handle paths with spaces etc
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@ -26,12 +26,13 @@ void bw_example_fx_bitcrush_init(bw_example_fx_bitcrush *instance) {
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}
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void bw_example_fx_bitcrush_set_sample_rate(bw_example_fx_bitcrush *instance, float sample_rate) {
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(void)instance;
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(void)sample_rate;
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bw_sr_reduce_set_sample_rate(&instance->sr_reduce_coeffs, sample_rate);
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bw_bd_reduce_set_sample_rate(&instance->bd_reduce_coeffs, sample_rate);
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}
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void bw_example_fx_bitcrush_reset(bw_example_fx_bitcrush *instance) {
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bw_sr_reduce_reset_state(&instance->sr_reduce_coeffs, &instance->sr_reduce_state);
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bw_sr_reduce_reset_coeffs(&instance->sr_reduce_coeffs);
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bw_sr_reduce_reset_state(&instance->sr_reduce_coeffs, &instance->sr_reduce_state, 0.f);
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bw_bd_reduce_reset_coeffs(&instance->bd_reduce_coeffs);
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}
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@ -4,3 +4,6 @@ NAME := bw_example_fx_bitcrush
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SOURCES = ${SOURCES_COMMON} ${ROOT_DIR}/../src/bw_example_fx_bitcrush.c
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include ${ROOT_DIR}/../../common/vst3/vst3.mk
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CXXFLAGS += -DRELEASE=1 -DNDEBUG -DBW_NO_DEBUG
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#CXXFLAGS += -DDEVELOPMENT=1 -DBW_DEBUG_DEEP
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@ -4,3 +4,6 @@ NAME := bw_example_fxpp_bitcrush
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SOURCES = ${SOURCES_COMMON} ${ROOT_DIR}/../src/bw_example_fxpp_bitcrush.cpp
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include ${ROOT_DIR}/../../common/vst3/vst3.mk
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CXXFLAGS += -DRELEASE=1 -DNDEBUG -DBW_NO_DEBUG
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#CXXFLAGS += -DDEVELOPMENT=1 -DBW_DEBUG_DEEP
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@ -33,6 +33,7 @@
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* <ul>
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* <li>Version <strong>1.0.0</strong>:
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* <ul>
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* <li>Added <code>bw_bd_reduce_set_sample_rate()</code>.</li>
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* <li><code>bw_bd_reduce_process()</code> and
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* <code>bw_bd_reduce_process_multi()</code> now use
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* <code>size_t</code> to count samples and channels.</li>
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@ -42,6 +43,8 @@
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* <li>Added overloaded C++ <code>process()</code> function taking
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* C-style arrays as arguments.</li>
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* <li>Removed usage of reserved identifiers.</li>
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* <li>Clearly specified parameter validity ranges.</li>
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* <li>Added debugging code.</li>
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* </ul>
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* </li>
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* <li>Version <strong>0.6.0</strong>:
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@ -87,38 +90,56 @@ typedef struct bw_bd_reduce_coeffs bw_bd_reduce_coeffs;
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*
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* #### bw_bd_reduce_init()
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* ```>>> */
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static inline void bw_bd_reduce_init(bw_bd_reduce_coeffs *BW_RESTRICT coeffs);
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static inline void bw_bd_reduce_init(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs);
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/*! <<<```
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* Initializes input parameter values in `coeffs`.
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*
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* #### bw_bw_reduce_set_sample_rate()
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* ```>>> */
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static inline void bw_bd_reduce_set_sample_rate(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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float sample_rate);
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/*! <<<```
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* Sets the `sample_rate` (Hz) value in `coeffs`.
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*
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* #### bw_bd_reduce_reset_coeffs()
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* ```>>> */
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static inline void bw_bd_reduce_reset_coeffs(bw_bd_reduce_coeffs *BW_RESTRICT coeffs);
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static inline void bw_bd_reduce_reset_coeffs(
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bw_bd_reduce_coeffs *BW_RESTRICT coeffs);
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/*! <<<```
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* Resets coefficients in `coeffs` to assume their target values.
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*
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* #### bw_bd_reduce_update_coeffs_ctrl()
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* ```>>> */
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static inline void bw_bd_reduce_update_coeffs_ctrl(bw_bd_reduce_coeffs *BW_RESTRICT coeffs);
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static inline void bw_bd_reduce_update_coeffs_ctrl(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs);
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/*! <<<```
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* Triggers control-rate update of coefficients in `coeffs`.
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*
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* #### bw_bd_reduce_update_coeffs_audio()
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* ```>>> */
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static inline void bw_bd_reduce_update_coeffs_audio(bw_bd_reduce_coeffs *BW_RESTRICT coeffs);
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static inline void bw_bd_reduce_update_coeffs_audio(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs);
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/*! <<<```
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* Triggers audio-rate update of coefficients in `coeffs`.
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*
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* #### bw_bd_reduce_process1()
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* ```>>> */
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static inline float bw_bd_reduce_process1(const bw_bd_reduce_coeffs *BW_RESTRICT coeffs, float x);
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static inline float bw_bd_reduce_process1(
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const bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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float x);
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/*! <<<```
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* Processes one input sample `x` using `coeffs`. Returns the corresponding
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* output sample.
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*
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* #### bw_bd_reduce_process()
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* ```>>> */
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static inline void bw_bd_reduce_process(bw_bd_reduce_coeffs *BW_RESTRICT coeffs, const float *x, float *y, size_t n_samples);
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static inline void bw_bd_reduce_process(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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const float * x,
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float * y,
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size_t n_samples);
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/*! <<<```
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* Processes the first `n_samples` of the input buffer `x` and fills the
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* first `n_samples` of the output buffer `y`, while using and updating
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@ -126,7 +147,12 @@ static inline void bw_bd_reduce_process(bw_bd_reduce_coeffs *BW_RESTRICT coeffs,
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*
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* #### bw_bd_reduce_process_multi()
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* ```>>> */
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static inline void bw_bd_reduce_process_multi(bw_bd_reduce_coeffs *BW_RESTRICT coeffs, const float * const *x, float * const *y, size_t n_channels, size_t n_samples);
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static inline void bw_bd_reduce_process_multi(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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const float * const * x,
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float * const * y,
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size_t n_channels,
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size_t n_samples);
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/*! <<<```
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* Processes the first `n_samples` of the `n_channels` input buffers `x` and
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* fills the first `n_samples` of the `n_channels` output buffers `y`, while
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@ -134,11 +160,27 @@ static inline void bw_bd_reduce_process_multi(bw_bd_reduce_coeffs *BW_RESTRICT c
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*
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* #### bw_bd_reduce_set_bit_depth()
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* ```>>> */
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static inline void bw_bd_reduce_set_bit_depth(bw_bd_reduce_coeffs *BW_RESTRICT coeffs, char value);
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static inline void bw_bd_reduce_set_bit_depth(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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char value);
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/*! <<<```
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* Sets the output bit depth `value` in `coeffs`. `value` must be strictly positive.
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* Sets the output bit depth `value` in `coeffs`.
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*
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* Valid range: [`1`, `64`].
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*
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* Default value: `16`.
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*
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* #### bw_bd_reduce_coeffs_is_valid()
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* ```>>> */
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static inline char bw_bd_reduce_coeffs_is_valid(
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const bw_bd_reduce_coeffs * BW_RESTRICT coeffs);
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/*! <<<```
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* Tries to determine whether `coeffs` is valid and returns non-`0` if it
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* seems to be the case and `0` if it is certainly not. False positives are
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* possible, false negatives are not.
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*
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* `coeffs` must at least point to a readable memory block of size greater
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* than or equal to that of `bw_bd_reduce_coeffs`.
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* }}} */
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#ifdef __cplusplus
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@ -156,7 +198,21 @@ static inline void bw_bd_reduce_set_bit_depth(bw_bd_reduce_coeffs *BW_RESTRICT c
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extern "C" {
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#endif
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#ifdef BW_DEBUG_DEEP
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enum bw_bd_reduce_coeffs_state {
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bw_bd_reduce_coeffs_state_invalid,
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bw_bd_reduce_coeffs_state_init,
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bw_bd_reduce_coeffs_state_set_sample_rate,
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bw_bd_reduce_coeffs_state_reset_coeffs
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};
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#endif
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struct bw_bd_reduce_coeffs {
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#ifdef BW_DEBUG_DEEP
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uint32_t hash;
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enum bw_bd_reduce_coeffs_state state;
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#endif
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// Coefficients
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float ki;
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float k;
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@ -167,16 +223,40 @@ struct bw_bd_reduce_coeffs {
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char bit_depth_prev;
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};
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static inline void bw_bd_reduce_init(bw_bd_reduce_coeffs *BW_RESTRICT coeffs) {
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static inline void bw_bd_reduce_init(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs) {
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BW_ASSERT(coeffs != NULL);
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coeffs->bit_depth = 16;
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#ifdef BW_DEBUG_DEEP
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coeffs->hash = bw_hash_sdbm("bw_bd_reduce_coeffs");
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coeffs->state = bw_bd_reduce_coeffs_state_init;
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#endif
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state == bw_bd_reduce_coeffs_state_init);
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}
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static inline void bw_bd_reduce_reset_coeffs(bw_bd_reduce_coeffs *BW_RESTRICT coeffs) {
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coeffs->bit_depth_prev = 0;
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bw_bd_reduce_update_coeffs_ctrl(coeffs);
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static inline void bw_bd_reduce_set_sample_rate(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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float sample_rate) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
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BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
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(void)coeffs;
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(void)sample_rate;
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#ifdef BW_DEBUG_DEEP
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coeffs->state = bw_bd_reduce_coeffs_state_set_sample_rate;
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#endif
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state == bw_bd_reduce_coeffs_state_set_sample_rate);
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}
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static inline void bw_bd_reduce_update_coeffs_ctrl(bw_bd_reduce_coeffs *BW_RESTRICT coeffs) {
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static inline void bw_bd_reduce_do_update_coeffs_ctrl(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs) {
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if (coeffs->bit_depth_prev != coeffs->bit_depth) {
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coeffs->k = bw_pow2f(coeffs->bit_depth - 1);
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coeffs->ki = bw_rcpf(coeffs->k);
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@ -185,29 +265,144 @@ static inline void bw_bd_reduce_update_coeffs_ctrl(bw_bd_reduce_coeffs *BW_RESTR
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}
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}
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static inline void bw_bd_reduce_update_coeffs_audio(bw_bd_reduce_coeffs *BW_RESTRICT coeffs) {
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static inline void bw_bd_reduce_reset_coeffs(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_set_sample_rate);
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coeffs->bit_depth_prev = 0;
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bw_bd_reduce_do_update_coeffs_ctrl(coeffs);
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#ifdef BW_DEBUG_DEEP
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coeffs->state = bw_bd_reduce_coeffs_state_reset_coeffs;
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#endif
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state == bw_bd_reduce_coeffs_state_reset_coeffs);
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}
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static inline void bw_bd_reduce_update_coeffs_ctrl(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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bw_bd_reduce_do_update_coeffs_ctrl(coeffs);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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}
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static inline void bw_bd_reduce_update_coeffs_audio(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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(void)coeffs;
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}
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static inline float bw_bd_reduce_process1(const bw_bd_reduce_coeffs *BW_RESTRICT coeffs, float x) {
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return coeffs->ki * (bw_floorf(coeffs->k * bw_clipf(x, -coeffs->max, coeffs->max)) + 0.5f);
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static inline float bw_bd_reduce_process1(
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const bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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float x) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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BW_ASSERT(bw_is_finite(x));
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const float y = coeffs->ki * (bw_floorf(coeffs->k * bw_clipf(x, -coeffs->max, coeffs->max)) + 0.5f);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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BW_ASSERT(bw_is_finite(y));
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return y;
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}
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static inline void bw_bd_reduce_process(bw_bd_reduce_coeffs *BW_RESTRICT coeffs, const float *x, float *y, size_t n_samples) {
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static inline void bw_bd_reduce_process(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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const float * x,
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float * y,
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size_t n_samples) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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BW_ASSERT(x != NULL);
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BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
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BW_ASSERT(y != NULL);
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bw_bd_reduce_update_coeffs_ctrl(coeffs);
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for (size_t i = 0; i < n_samples; i++)
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y[i] = bw_bd_reduce_process1(coeffs, x[i]);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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BW_ASSERT_DEEP(bw_has_only_finite(y, n_samples));
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}
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static inline void bw_bd_reduce_process_multi(bw_bd_reduce_coeffs *BW_RESTRICT coeffs, const float * const *x, float * const *y, size_t n_channels, size_t n_samples) {
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static inline void bw_bd_reduce_process_multi(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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const float * const * x,
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float * const * y,
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size_t n_channels,
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size_t n_samples) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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BW_ASSERT(x != NULL);
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BW_ASSERT(y != NULL);
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bw_bd_reduce_update_coeffs_ctrl(coeffs);
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for (size_t i = 0; i < n_samples; i++)
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for (size_t j = 0; j < n_channels; j++)
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y[j][i] = bw_bd_reduce_process1(coeffs, x[j][i]);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
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}
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static inline void bw_bd_reduce_set_bit_depth(bw_bd_reduce_coeffs *BW_RESTRICT coeffs, char value) {
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static inline void bw_bd_reduce_set_bit_depth(
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bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
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char value) {
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BW_ASSERT(coeffs != NULL);
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
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BW_ASSERT(value >= 1 && value <= 64);
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coeffs->bit_depth = value;
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BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
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BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
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}
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static inline char bw_bd_reduce_coeffs_is_valid(
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const bw_bd_reduce_coeffs * BW_RESTRICT coeffs) {
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BW_ASSERT(coeffs != NULL);
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#ifdef BW_DEBUG_DEEP
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if (coeffs->hash != bw_hash_sdbm("bw_bd_reduce_coeffs"))
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return 0;
|
||||
if (coeffs->state < bw_bd_reduce_coeffs_state_init || coeffs->state > bw_bd_reduce_coeffs_state_reset_coeffs)
|
||||
return 0;
|
||||
#endif
|
||||
|
||||
if (coeffs->bit_depth < 1 || coeffs->bit_depth > 64)
|
||||
return 0;
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
if (coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs) {
|
||||
if (coeffs->bit_depth_prev < 1 || coeffs->bit_depth_prev > 64)
|
||||
return 0;
|
||||
if (!bw_is_finite(coeffs->k) || coeffs->k <= 0.f)
|
||||
return 0;
|
||||
if (!bw_is_finite(coeffs->ki) || coeffs->ki <= 0.f)
|
||||
return 0;
|
||||
if (!bw_is_finite(coeffs->max) || coeffs->max < 0.5f || coeffs->max > 1.f)
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
@ -227,17 +422,23 @@ class BDReduce {
|
||||
public:
|
||||
BDReduce();
|
||||
|
||||
void setSampleRate(
|
||||
float sampleRate);
|
||||
|
||||
void reset();
|
||||
|
||||
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,
|
||||
const float * const * x,
|
||||
float * const * y,
|
||||
size_t nSamples);
|
||||
|
||||
void setBitDepth(char value);
|
||||
void process(
|
||||
std::array<const float *, N_CHANNELS> x,
|
||||
std::array<float *, N_CHANNELS> y,
|
||||
size_t nSamples);
|
||||
|
||||
void setBitDepth(
|
||||
char value);
|
||||
/*! <<<...
|
||||
* }
|
||||
* ```
|
||||
@ -257,6 +458,12 @@ inline BDReduce<N_CHANNELS>::BDReduce() {
|
||||
bw_bd_reduce_init(&coeffs);
|
||||
}
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void BDReduce<N_CHANNELS>::setSampleRate(
|
||||
float sampleRate) {
|
||||
bw_bd_reduce_set_sample_rate(&coeffs, sampleRate);
|
||||
}
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void BDReduce<N_CHANNELS>::reset() {
|
||||
bw_bd_reduce_reset_coeffs(&coeffs);
|
||||
@ -264,22 +471,23 @@ inline void BDReduce<N_CHANNELS>::reset() {
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void BDReduce<N_CHANNELS>::process(
|
||||
const float * const *x,
|
||||
float * const *y,
|
||||
const float * const * x,
|
||||
float * const * y,
|
||||
size_t nSamples) {
|
||||
bw_bd_reduce_process_multi(&coeffs, x, y, N_CHANNELS, nSamples);
|
||||
}
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void BDReduce<N_CHANNELS>::process(
|
||||
const std::array<const float *, N_CHANNELS> x,
|
||||
const std::array<float *, N_CHANNELS> y,
|
||||
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 BDReduce<N_CHANNELS>::setBitDepth(char value) {
|
||||
inline void BDReduce<N_CHANNELS>::setBitDepth(
|
||||
char value) {
|
||||
bw_bd_reduce_set_bit_depth(&coeffs, value);
|
||||
}
|
||||
|
||||
|
||||
@ -33,8 +33,20 @@
|
||||
* <ul>
|
||||
* <li>Version <strong>1.0.0</strong>:
|
||||
* <ul>
|
||||
* <li><code>bw_sr_reduce_lim_process()</code> and
|
||||
* <code>bw_sr_reduce_lim_process_multi()</code> now use
|
||||
* <li>Added <code>bw_sr_reduce_set_sample_rate()</code>,
|
||||
* <code>bw_sr_reduce_reset_coeffs()</code>,
|
||||
* <code>bw_sr_reduce_update_coeffs_ctrl()</code>, and
|
||||
* <code>bw_sr_reduce_update_coeffs_audio()</code>.</li>
|
||||
* <li>Added initial input value to
|
||||
* <code>bw_sr_reduce_reset_state()</code>.</li>
|
||||
* <li>Added <code>bw_sr_reduce_reset_state_multi()</code> and updated C++
|
||||
* API in this regard.</li>
|
||||
* <li>Now <code>bw_sr_reduce_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_sr_reduce_process()</code> and
|
||||
* <code>bw_sr_reduce_process_multi()</code> now use
|
||||
* <code>size_t</code> to count samples and channels.</li>
|
||||
* <li>Added more <code>const</code> and <code>BW_RESTRICT</code>
|
||||
* specifiers to input arguments and implementation.</li>
|
||||
@ -42,6 +54,7 @@
|
||||
* <li>Added overloaded C++ <code>process()</code> function taking
|
||||
* C-style arrays as arguments.</li>
|
||||
* <li>Removed usage of reserved identifiers.</li>
|
||||
* <li>Added debugging code.</li>
|
||||
* </ul>
|
||||
* </li>
|
||||
* <li>Version <strong>0.6.0</strong>:
|
||||
@ -93,26 +106,86 @@ typedef struct bw_sr_reduce_state bw_sr_reduce_state;
|
||||
*
|
||||
* #### bw_sr_reduce_init()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_init(bw_sr_reduce_coeffs *BW_RESTRICT coeffs);
|
||||
static inline void bw_sr_reduce_init(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs);
|
||||
/*! <<<```
|
||||
* Initializes input parameter values in `coeffs`.
|
||||
*
|
||||
* #### bw_sr_reduce_set_sample_rate()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_set_sample_rate(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
float sample_rate);
|
||||
/*! <<<```
|
||||
* Sets the `sample_rate` (Hz) value in `coeffs`.
|
||||
*
|
||||
* #### bw_sr_reduce_reset_coeffs()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_reset_coeffs(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs);
|
||||
/*! <<<```
|
||||
* Resets coefficients in `coeffs` to assume their target values.
|
||||
*
|
||||
* #### bw_sr_reduce_reset_state()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_reset_state(const bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_state *BW_RESTRICT state);
|
||||
static inline float bw_sr_reduce_reset_state(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_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_sr_reduce_reset_state_multi()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_reset_state_multi(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_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_sr_reduce_update_coeffs_ctrl()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_update_coeffs_ctrl(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs);
|
||||
/*! <<<```
|
||||
* Triggers control-rate update of coefficients in `coeffs`.
|
||||
*
|
||||
* #### bw_sr_reduce_update_coeffs_audio()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_update_coeffs_audio(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs);
|
||||
/*! <<<```
|
||||
* Triggers audio-rate update of coefficients in `coeffs`.
|
||||
*
|
||||
* #### bw_sr_reduce_process1()
|
||||
* ```>>> */
|
||||
static inline float bw_sr_reduce_process1(const bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_state *BW_RESTRICT state, float x);
|
||||
static inline float bw_sr_reduce_process1(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_state * BW_RESTRICT state,
|
||||
float x);
|
||||
/*! <<<```
|
||||
* Processes one input sample `x` using `coeffs`, while using and updating
|
||||
* `state`. Returns the corresponding output sample.
|
||||
*
|
||||
* #### bw_sr_reduce_process()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_process(bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples);
|
||||
static inline void bw_sr_reduce_process(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_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 `coeffs` and
|
||||
@ -120,7 +193,13 @@ static inline void bw_sr_reduce_process(bw_sr_reduce_coeffs *BW_RESTRICT coeffs,
|
||||
*
|
||||
* #### bw_sr_reduce_process_multi()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_process_multi(bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_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_sr_reduce_process_multi(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_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
|
||||
@ -129,13 +208,43 @@ static inline void bw_sr_reduce_process_multi(bw_sr_reduce_coeffs *BW_RESTRICT c
|
||||
*
|
||||
* #### bw_sr_reduce_set_ratio()
|
||||
* ```>>> */
|
||||
static inline void bw_sr_reduce_set_ratio(bw_sr_reduce_coeffs *BW_RESTRICT coeffs, float value);
|
||||
static inline void bw_sr_reduce_set_ratio(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
float value);
|
||||
/*! <<<```
|
||||
* Sets the output to input sample rate ratio in `coeffs`.
|
||||
*
|
||||
* Valid input range: [`0.f`, `1.f`].
|
||||
*
|
||||
* Default value: `1.f`.
|
||||
*
|
||||
* #### bw_sr_reduce_coeffs_is_valid()
|
||||
* ```>>> */
|
||||
static inline char bw_sr_reduce_coeffs_is_valid(
|
||||
const bw_sr_reduce_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_sr_reduce_coeffs`.
|
||||
*
|
||||
* #### bw_sr_reduce_state_is_valid()
|
||||
* ```>>> */
|
||||
static inline char bw_sr_reduce_state_is_valid(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
const bw_sr_reduce_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_sr_reduce_state`.
|
||||
* }}} */
|
||||
|
||||
#ifdef __cplusplus
|
||||
@ -153,46 +262,271 @@ static inline void bw_sr_reduce_set_ratio(bw_sr_reduce_coeffs *BW_RESTRICT coeff
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
enum bw_sr_reduce_coeffs_state {
|
||||
bw_sr_reduce_coeffs_state_invalid,
|
||||
bw_sr_reduce_coeffs_state_init,
|
||||
bw_sr_reduce_coeffs_state_set_sample_rate,
|
||||
bw_sr_reduce_coeffs_state_reset_coeffs
|
||||
};
|
||||
#endif
|
||||
|
||||
struct bw_sr_reduce_coeffs {
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
uint32_t hash;
|
||||
enum bw_sr_reduce_coeffs_state state;
|
||||
uint32_t reset_id;
|
||||
#endif
|
||||
|
||||
// Parameters
|
||||
float ratio;
|
||||
};
|
||||
|
||||
struct bw_sr_reduce_state {
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
uint32_t hash;
|
||||
uint32_t coeffs_reset_id;
|
||||
#endif
|
||||
|
||||
// States
|
||||
float phase;
|
||||
float y_z1;
|
||||
};
|
||||
|
||||
static inline void bw_sr_reduce_init(bw_sr_reduce_coeffs *BW_RESTRICT coeffs) {
|
||||
static inline void bw_sr_reduce_init(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
|
||||
coeffs->ratio = 1.f;
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
coeffs->hash = bw_hash_sdbm("bw_sr_reduce_coeffs");
|
||||
coeffs->state = bw_sr_reduce_coeffs_state_init;
|
||||
coeffs->reset_id = coeffs->hash + 1;
|
||||
#endif
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state == bw_sr_reduce_coeffs_state_init);
|
||||
}
|
||||
|
||||
static inline void bw_sr_reduce_reset_state(const bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_state *BW_RESTRICT state) {
|
||||
static inline void bw_sr_reduce_set_sample_rate(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
float sample_rate) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_init);
|
||||
BW_ASSERT(bw_is_finite(sample_rate) && sample_rate > 0.f);
|
||||
|
||||
(void)coeffs;
|
||||
state->phase = 1.f;
|
||||
(void)sample_rate;
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
coeffs->state = bw_sr_reduce_coeffs_state_set_sample_rate;
|
||||
#endif
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state == bw_sr_reduce_coeffs_state_set_sample_rate);
|
||||
}
|
||||
|
||||
static inline float bw_sr_reduce_process1(const bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_state *BW_RESTRICT state, float x) {
|
||||
static inline void bw_sr_reduce_reset_coeffs(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_set_sample_rate);
|
||||
|
||||
(void)coeffs;
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
coeffs->state = bw_sr_reduce_coeffs_state_reset_coeffs;
|
||||
coeffs->reset_id++;
|
||||
#endif
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state == bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
}
|
||||
|
||||
static inline float bw_sr_reduce_reset_state(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_state * BW_RESTRICT state,
|
||||
float x_0) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT(state != NULL);
|
||||
BW_ASSERT(bw_is_finite(x_0));
|
||||
|
||||
(void)coeffs;
|
||||
state->y_z1 = x_0;
|
||||
state->phase = 1.f;
|
||||
const float y = x_0;
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
state->hash = bw_hash_sdbm("bw_sr_reduce_state");
|
||||
state->coeffs_reset_id = coeffs->reset_id;
|
||||
#endif
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_state_is_valid(coeffs, state));
|
||||
BW_ASSERT(bw_is_finite(y));
|
||||
|
||||
return y;
|
||||
}
|
||||
|
||||
static inline void bw_sr_reduce_reset_state_multi(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_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_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_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_sr_reduce_reset_state(coeffs, state[i], x_0[i]);
|
||||
else
|
||||
for (size_t i = 0; i < n_channels; i++)
|
||||
bw_sr_reduce_reset_state(coeffs, state[i], x_0[i]);
|
||||
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT_DEEP(y_0 != NULL ? bw_has_only_finite(y_0, n_channels) : 1);
|
||||
}
|
||||
|
||||
static inline void bw_sr_reduce_update_coeffs_ctrl(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
|
||||
(void)coeffs;
|
||||
}
|
||||
|
||||
static inline void bw_sr_reduce_update_coeffs_audio(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
|
||||
(void)coeffs;
|
||||
}
|
||||
|
||||
static inline float bw_sr_reduce_process1(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_state * BW_RESTRICT state,
|
||||
float x) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT(state != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_state_is_valid(coeffs, state));
|
||||
BW_ASSERT(bw_is_finite(x));
|
||||
|
||||
state->phase += coeffs->ratio;
|
||||
if (state->phase >= 1.f) {
|
||||
state->y_z1 = x;
|
||||
state->phase -= bw_floorf(state->phase);
|
||||
}
|
||||
return state->y_z1;
|
||||
const float y = state->y_z1;
|
||||
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_state_is_valid(coeffs, state));
|
||||
BW_ASSERT(bw_is_finite(y));
|
||||
|
||||
return y;
|
||||
}
|
||||
|
||||
static inline void bw_sr_reduce_process(bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_state *BW_RESTRICT state, const float *x, float *y, size_t n_samples) {
|
||||
static inline void bw_sr_reduce_process(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_state * BW_RESTRICT state,
|
||||
const float * x,
|
||||
float * y,
|
||||
size_t n_samples) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT(state != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_state_is_valid(coeffs, state));
|
||||
BW_ASSERT(x != NULL);
|
||||
BW_ASSERT_DEEP(bw_has_only_finite(x, n_samples));
|
||||
BW_ASSERT(y != NULL);
|
||||
|
||||
for (size_t i = 0; i < n_samples; i++)
|
||||
y[i] = bw_sr_reduce_process1(coeffs, state, x[i]);
|
||||
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_state_is_valid(coeffs, state));
|
||||
BW_ASSERT_DEEP(bw_has_only_finite(y, n_samples));
|
||||
}
|
||||
|
||||
static inline void bw_sr_reduce_process_multi(bw_sr_reduce_coeffs *BW_RESTRICT coeffs, bw_sr_reduce_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_sr_reduce_process_multi(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
bw_sr_reduce_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_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
BW_ASSERT(state != NULL);
|
||||
BW_ASSERT(x != NULL);
|
||||
BW_ASSERT(y != NULL);
|
||||
|
||||
for (size_t i = 0; i < n_channels; i++)
|
||||
bw_sr_reduce_process(coeffs, state[i], x[i], y[i], n_samples);
|
||||
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_reset_coeffs);
|
||||
}
|
||||
|
||||
static inline void bw_sr_reduce_set_ratio(bw_sr_reduce_coeffs *BW_RESTRICT coeffs, float value) {
|
||||
static inline void bw_sr_reduce_set_ratio(
|
||||
bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
float value) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_init);
|
||||
BW_ASSERT(bw_is_finite(value));
|
||||
BW_ASSERT(value >= 0.f && value <= 1.f);
|
||||
|
||||
coeffs->ratio = value;
|
||||
|
||||
BW_ASSERT_DEEP(bw_sr_reduce_coeffs_is_valid(coeffs));
|
||||
BW_ASSERT_DEEP(coeffs->state >= bw_sr_reduce_coeffs_state_init);
|
||||
}
|
||||
|
||||
static inline char bw_sr_reduce_coeffs_is_valid(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs) {
|
||||
BW_ASSERT(coeffs != NULL);
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
if (coeffs->hash != bw_hash_sdbm("bw_sr_reduce_coeffs"))
|
||||
return 0;
|
||||
if (coeffs->state < bw_sr_reduce_coeffs_state_init || coeffs->state > bw_sr_reduce_coeffs_state_reset_coeffs)
|
||||
return 0;
|
||||
#endif
|
||||
|
||||
return bw_is_finite(coeffs->ratio) && coeffs->ratio >= 0.f && coeffs->ratio <= 1.f;
|
||||
}
|
||||
|
||||
static inline char bw_sr_reduce_state_is_valid(
|
||||
const bw_sr_reduce_coeffs * BW_RESTRICT coeffs,
|
||||
const bw_sr_reduce_state * BW_RESTRICT state) {
|
||||
BW_ASSERT(state != NULL);
|
||||
|
||||
#ifdef BW_DEBUG_DEEP
|
||||
if (state->hash != bw_hash_sdbm("bw_sr_reduce_state"))
|
||||
return 0;
|
||||
|
||||
if (coeffs != NULL && coeffs->reset_id != state->coeffs_reset_id)
|
||||
return 0;
|
||||
#endif
|
||||
|
||||
(void)coeffs;
|
||||
|
||||
return bw_is_finite(state->phase) && state->phase >= 0.f && bw_is_finite(state->y_z1);
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
@ -212,17 +546,37 @@ class SRReduce {
|
||||
public:
|
||||
SRReduce();
|
||||
|
||||
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,
|
||||
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 setRatio(float value);
|
||||
void setRatio(
|
||||
float value);
|
||||
/*! <<<...
|
||||
* }
|
||||
* ```
|
||||
@ -236,7 +590,7 @@ public:
|
||||
private:
|
||||
bw_sr_reduce_coeffs coeffs;
|
||||
bw_sr_reduce_state states[N_CHANNELS];
|
||||
bw_sr_reduce_state *BW_RESTRICT statesP[N_CHANNELS];
|
||||
bw_sr_reduce_state * BW_RESTRICT statesP[N_CHANNELS];
|
||||
};
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
@ -247,15 +601,50 @@ inline SRReduce<N_CHANNELS>::SRReduce() {
|
||||
}
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void SRReduce<N_CHANNELS>::reset() {
|
||||
inline void SRReduce<N_CHANNELS>::setSampleRate(
|
||||
float sampleRate) {
|
||||
bw_sr_reduce_set_sample_rate(&coeffs, sampleRate);
|
||||
}
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void SRReduce<N_CHANNELS>::reset(
|
||||
float x0,
|
||||
float * BW_RESTRICT y0) {
|
||||
bw_sr_reduce_reset_coeffs(&coeffs);
|
||||
if (y0 != nullptr)
|
||||
for (size_t i = 0; i < N_CHANNELS; i++)
|
||||
bw_sr_reduce_reset_state(&coeffs, states + i);
|
||||
y0[i] = bw_sr_reduce_reset_state(&coeffs, states + i, x0);
|
||||
else
|
||||
for (size_t i = 0; i < N_CHANNELS; i++)
|
||||
bw_sr_reduce_reset_state(&coeffs, states + i, x0);
|
||||
}
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void SRReduce<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 SRReduce<N_CHANNELS>::reset(
|
||||
const float * x0,
|
||||
float * y0) {
|
||||
bw_sr_reduce_reset_coeffs(&coeffs);
|
||||
bw_sr_reduce_reset_state_multi(&coeffs, statesP, x0, y0, N_CHANNELS);
|
||||
}
|
||||
|
||||
template<size_t N_CHANNELS>
|
||||
inline void SRReduce<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 SRReduce<N_CHANNELS>::process(
|
||||
const float * const *x,
|
||||
float * const *y,
|
||||
const float * const * x,
|
||||
float * const * y,
|
||||
size_t nSamples) {
|
||||
bw_sr_reduce_process_multi(&coeffs, statesP, x, y, N_CHANNELS, nSamples);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user