orastron/brickworks
2
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 10 Wiki Activity

add gate param to bw_bd_reduce and examples + fix fxpp_bitcrush

Browse Source
This commit is contained in:
Stefano D'Angelo 2024-03-13 12:28:35 +01:00
parent a4a8ba96ca
commit 5f2a413b4d
9 changed files with 117 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
examples/fx_bitcrush/src/cmd.json
View File

@ -1,6 +1,6 @@
{
"cmd": {
"busIds": [ "input", "output" ],
"parameterIds": [ "sr_ratio", "bit_depth" ]
"parameterIds": [ "sr_ratio", "bit_depth", "gate" ]
}
}

2
examples/fx_bitcrush/src/lv2.json
View File

@ -7,6 +7,6 @@
"types": [ "@lv2:DistortionPlugin" ],
"version": "0.0",
"busSymbols": [ "input", "output" ],
"parameterSymbols": [ "sr_ratio", "bit_depth" ]
"parameterSymbols": [ "sr_ratio", "bit_depth", "gate" ]
}
}

3
examples/fx_bitcrush/src/plugin.h
View File

@ -67,6 +67,9 @@ static void plugin_set_parameter(plugin *instance, size_t index, float value) {
case 1:
bw_bd_reduce_set_bit_depth(&instance->bd_reduce_coeffs, (char)value);
break;
case 2:
bw_bd_reduce_set_gate_lin(&instance->bd_reduce_coeffs, value);
break;
}
}

10
examples/fx_bitcrush/src/product.json
View File

@ -40,6 +40,16 @@
"maximum": 16.0,
"integer": true,
"map": "linear"
},
{
"name": "Gate",
"shortName": "Gate",
"direction": "input",
"defaultValue": 0.0,
"minimum": 0.0,
"maximum": 1.0,
"optional": true,
"map": "linear"
}
]
}

2
examples/fxpp_bitcrush/src/cmd.json
View File

@ -1,6 +1,6 @@
{
"cmd": {
"busIds": [ "input", "output" ],
"parameterIds": [ "sr_ratio", "bit_depth" ]
"parameterIds": [ "sr_ratio", "bit_depth", "gate" ]
}
}

5
examples/fxpp_bitcrush/src/impl.cpp
View File

@ -66,6 +66,9 @@ void impl_set_parameter(impl handle, size_t index, float value) {
case 1:
instance->bd.setBitDepth((char)value);
break;
case 2:
instance->bd.setGateLin(value);
break;
}
}
@ -78,7 +81,7 @@ float impl_get_parameter(impl handle, size_t index) {
void impl_process(impl handle, const float **inputs, float **outputs, size_t n_samples) {
Engine *instance = reinterpret_cast<Engine *>(handle);
instance->sr.process(inputs, outputs, n_samples);
instance->bd.process(inputs, outputs, n_samples);
instance->bd.process(outputs, outputs, n_samples);
}
}

2
examples/fxpp_bitcrush/src/lv2.json
View File

@ -7,6 +7,6 @@
"types": [ "@lv2:DistortionPlugin" ],
"version": "0.0",
"busSymbols": [ "input", "output" ],
"parameterSymbols": [ "sr_ratio", "bit_depth" ]
"parameterSymbols": [ "sr_ratio", "bit_depth", "gate" ]
}
}

10
examples/fxpp_bitcrush/src/product.json
View File

@ -40,6 +40,16 @@
"maximum": 16.0,
"integer": true,
"map": "linear"
},
{
"name": "Gate",
"shortName": "Gate",
"direction": "input",
"defaultValue": 0.0,
"minimum": 0.0,
"maximum": 1.0,
"optional": true,
"map": "linear"
}
]
}

88
include/bw_bd_reduce.h
View File

@ -20,17 +20,24 @@
/*!
* module_type {{{ dsp }}}
* version {{{ 1.1.0 }}}
* version {{{ 1.2.0 }}}
* requires {{{ bw_common bw_math }}}
* description {{{
* Bit depth reducer.
* Bit depth reducer with input gate.
*
* This is purely an audio effect, it doesn't actually produce an output
* signal with a different encoding. The algorithm is deliberately crude to
* obtain the characteristic noise due to lo-fi A/D quantization.
*
* It
* }}}
* changelog {{{
* <ul>
* <li>Version <strong>1.2.0</strong>:
* <ul>
* <li>Added gate parameter.</li>
* </ul>
* </li>
* <li>Version <strong>1.1.0</strong>:
* <ul>
* <li>Added silence_dc parameter.</li>
@ -188,6 +195,30 @@ static inline void bw_bd_reduce_set_silence_dc(
*
* Default value: non-`0` (non-null dc).
*
* #### bw_bd_reduce_set_gate_lin()
* ```>>> */
static inline void bw_bd_reduce_set_gate_lin(
bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the input gate threshold `value` (linear) in `coeffs`.
*
* Valid range: [`0.f`, `1.f`].
*
* Default value: `0.f`.
*
* #### bw_bd_reduce_set_gate_dBFS()
* ```>>> */
static inline void bw_bd_reduce_set_gate_dBFS(
bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
float value);
/*! <<<```
* Sets the input gate threshold `value` (dBFS) in `coeffs`.
*
* Valid range: [`-INFINITY`, `0.f`].
*
* Default value: `-INFINITY`.
*
* #### bw_bd_reduce_coeffs_is_valid()
* ```>>> */
static inline char bw_bd_reduce_coeffs_is_valid(
@ -236,6 +267,7 @@ struct bw_bd_reduce_coeffs {
float k;
float ko;
float max;
float gate;
// Parameters
char bit_depth;
@ -248,6 +280,7 @@ static inline void bw_bd_reduce_init(
coeffs->bit_depth = 16;
coeffs->ko = 0.5f;
coeffs->gate = 0.f;
#ifdef BW_DEBUG_DEEP
coeffs->hash = bw_hash_sdbm("bw_bd_reduce_coeffs");
@ -330,6 +363,7 @@ static inline float bw_bd_reduce_process1(
BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_reset_coeffs);
BW_ASSERT(bw_is_finite(x));
x = bw_absf(x) < coeffs->gate ? 0.f : x;
const float y = coeffs->ki * (bw_floorf(coeffs->k * bw_clipf(x, -coeffs->max, coeffs->max)) + coeffs->ko);
BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
@ -413,6 +447,36 @@ static inline void bw_bd_reduce_set_silence_dc(
BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
}
static inline void bw_bd_reduce_set_gate_lin(
bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != BW_NULL);
BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value >= 0.f && value <= 1.f);
coeffs->gate = value;
BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
}
static inline void bw_bd_reduce_set_gate_dBFS(
bw_bd_reduce_coeffs * BW_RESTRICT coeffs,
float value) {
BW_ASSERT(coeffs != BW_NULL);
BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
BW_ASSERT(bw_is_finite(value));
BW_ASSERT(value <= 0.f);
coeffs->gate = bw_dB2linf(value);
BW_ASSERT_DEEP(bw_bd_reduce_coeffs_is_valid(coeffs));
BW_ASSERT_DEEP(coeffs->state >= bw_bd_reduce_coeffs_state_init);
}
static inline char bw_bd_reduce_coeffs_is_valid(
const bw_bd_reduce_coeffs * BW_RESTRICT coeffs) {
BW_ASSERT(coeffs != BW_NULL);
@ -439,6 +503,8 @@ static inline char bw_bd_reduce_coeffs_is_valid(
return 0;
if (!bw_is_finite(coeffs->max) || coeffs->max < 0.5f || coeffs->max > 1.f)
return 0;
if (!bw_is_finite(coeffs->gate) || coeffs->gate < 0.f || coeffs->gate > 1.f)
return 0;
}
#endif
@ -486,6 +552,12 @@ public:
void setSilenceDc(
char value);
void setGateLin(
float value);
void setGateDBFS(
float value);
/*! <<<...
* }
* ```
@ -546,6 +618,18 @@ inline void BDReduce<N_CHANNELS>::setSilenceDc(
bw_bd_reduce_set_silence_dc(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void BDReduce<N_CHANNELS>::setGateLin(
float value) {
bw_bd_reduce_set_gate_lin(&coeffs, value);
}
template<size_t N_CHANNELS>
inline void BDReduce<N_CHANNELS>::setGateDBFS(
float value) {
bw_bd_reduce_set_gate_dBFS(&coeffs, value);
}
}
#endif