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custom dsp state set/get (vst3 only right now)

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This commit is contained in:
Stefano D'Angelo 2025-01-13 01:15:58 +01:00
parent 3c6719097e
commit a13f293479
5 changed files with 162 additions and 32 deletions
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4
templates/api/src/plugin_api.h
View File

@ -1,7 +1,7 @@
/*
* Tibia
*
* Copyright (C) 2024 Orastron Srl unipersonale
* Copyright (C) 2024, 2025 Orastron Srl unipersonale
*
* Tibia is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -26,6 +26,8 @@ typedef struct {
const char * format;
const char * (*get_bindir)(void *handle);
const char * (*get_datadir)(void *handle);
int (*write_state)(void *handle, const char *data, size_t length);
void (*load_parameter)(void *handle, size_t index, float value);
} plugin_callbacks;
typedef struct {

7
templates/vst3/src/data.h
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@ -1,7 +1,7 @@
/*
* Tibia
*
* Copyright (C) 2023, 2024 Orastron Srl unipersonale
* Copyright (C) 2023-2025 Orastron Srl unipersonale
*
* Tibia is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -123,6 +123,7 @@ static uint32_t midiInIndex[DATA_PRODUCT_BUSES_MIDI_INPUT_N] = {
#endif
#define DATA_PRODUCT_PARAMETERS_N {{=it.product.parameters.filter(x => !x.isLatency).length}}
#define DATA_PRODUCT_PARAMETERS_IN_N {{=it.product.parameters.filter(x => x.direction == "input").length}}
#if DATA_PRODUCT_PARAMETERS_N + DATA_PRODUCT_BUSES_MIDI_INPUT_N > 0
static struct Steinberg_Vst_ParameterInfo parameterInfo[DATA_PRODUCT_PARAMETERS_N + 3 * DATA_PRODUCT_BUSES_MIDI_INPUT_N] = {
@ -223,3 +224,7 @@ static struct {
#define DATA_UI
#define DATA_UI_USER_RESIZABLE {{=it.product.ui.userResizable ? 1 : 0}}
{{?}}
{{?it.product.state && it.product.state.dspCustom}}
#define STATE_DSP_CUSTOM
{{?}}

102
templates/vst3/src/vst3.c
View File

@ -1,7 +1,7 @@
/*
* Tibia
*
* Copyright (C) 2023, 2024 Orastron Srl unipersonale
* Copyright (C) 2023-2025 Orastron Srl unipersonale
*
* Tibia is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -146,12 +146,12 @@ static char *x_asprintf(const char * restrict format, ...) {
static char *bindir;
static char *datadir;
static const char * get_bindir_cb(void *handle) {
static const char * getBindirCb(void *handle) {
(void)handle;
return bindir;
}
static const char * get_datadir_cb(void *handle) {
static const char * getDatadirCb(void *handle) {
(void)handle;
return datadir;
}
@ -215,11 +215,43 @@ typedef struct pluginInstance {
char midiOutputsActive[DATA_PRODUCT_BUSES_MIDI_OUTPUT_N];
#endif
void * mem;
#ifdef STATE_DSP_CUSTOM
struct Steinberg_IBStream * state;
#endif
} pluginInstance;
static Steinberg_Vst_IComponentVtbl pluginVtblIComponent;
static Steinberg_Vst_IAudioProcessorVtbl pluginVtblIAudioProcessor;
#ifdef STATE_DSP_CUSTOM
static int pluginWriteStateCb(void *handle, const char *data, size_t length) {
pluginInstance *p = (pluginInstance *)handle;
size_t written = 0;
while (written < length) {
Steinberg_int32 w = (length - written) <= 0x7fffffff ? length - written : 0x7fffffff;
Steinberg_int32 n;
p->state->lpVtbl->write(p->state, (void *)data, length, &n);
if (n != w)
return -1;
written += n;
}
return 0;
}
# if DATA_PRODUCT_PARAMETERS_IN_N > 0
static void pluginLoadParameterCb(void *handle, size_t index, float value) {
size_t i = index;
# ifdef DATA_PARAM_LATENCY_INDEX
if (i >= DATA_PARAM_LATENCY_INDEX)
i--;
# endif
pluginInstance *p = (pluginInstance *)handle;
p->parameters[i] = parameterAdjust(i, value);
plugin_set_parameter(&p->p, index, p->parameters[i]);
}
# endif
#endif
static Steinberg_tresult pluginQueryInterface(pluginInstance *p, const Steinberg_TUID iid, void ** obj) {
// This seems to violate the way multiple inheritance should work in COM, but hosts like it, so what do I know...
size_t offset;
@ -285,8 +317,19 @@ static Steinberg_tresult pluginInitialize(void *thisInterface, struct Steinberg_
plugin_callbacks cbs = {
/* .handle = */ (void *)p,
/* .format = */ "vst3",
/* .get_bindir = */ get_bindir_cb,
/* .get_datadir = */ get_datadir_cb
/* .get_bindir = */ getBindirCb,
/* .get_datadir = */ getDatadirCb,
#ifdef STATE_DSP_CUSTOM
/* .write_state = */ pluginWriteStateCb,
# if DATA_PRODUCT_PARAMETERS_IN_N > 0
/* .load_parameter = */ pluginLoadParameterCb
# else
/* .load_parameter = */ NULL
# endif
#else
/* .write_state = */ NULL,
/* .load_parameter = */ NULL
#endif
};
plugin_init(&p->p, &cbs);
#if DATA_PRODUCT_PARAMETERS_N > 0
@ -511,7 +554,33 @@ static Steinberg_tresult pluginSetState(void* thisInterface, struct Steinberg_IB
TRACE("plugin set state\n");
if (state == NULL)
return Steinberg_kResultFalse;
#if DATA_PRODUCT_PARAMETERS_N > 0
#ifdef STATE_DSP_CUSTOM
pluginInstance *p = (pluginInstance *)((char *)thisInterface - offsetof(pluginInstance, vtblIComponent));
if (state->lpVtbl->seek(state, 0, Steinberg_IBStream_IStreamSeekMode_kIBSeekEnd, NULL) != Steinberg_kResultOk)
return Steinberg_kResultFalse;
Steinberg_int64 length;
if (state->lpVtbl->tell(state, &length) != Steinberg_kResultOk)
return Steinberg_kResultFalse;
if (state->lpVtbl->seek(state, 0, Steinberg_IBStream_IStreamSeekMode_kIBSeekSet, NULL) != Steinberg_kResultOk)
return Steinberg_kResultFalse;
char *data = malloc(length);
if (data == NULL)
return Steinberg_kResultFalse;
Steinberg_int64 read = 0;
while (read < length) {
Steinberg_int32 r = (length - read) <= 0x7fffffff ? length - read : 0x7fffffff;
Steinberg_int32 n;
state->lpVtbl->read(state, data + read, length, &n);
if (n != r) {
free(data);
return Steinberg_kResultFalse;
}
read += n;
}
plugin_state_load(&p->p, data, length);
free(data);
#else
# if DATA_PRODUCT_PARAMETERS_N > 0
pluginInstance *p = (pluginInstance *)((char *)thisInterface - offsetof(pluginInstance, vtblIComponent));
for (size_t i = 0; i < DATA_PRODUCT_PARAMETERS_N; i++) {
if (parameterInfo[i].flags & Steinberg_Vst_ParameterInfo_ParameterFlags_kIsReadOnly)
@ -526,6 +595,7 @@ static Steinberg_tresult pluginSetState(void* thisInterface, struct Steinberg_IB
p->parameters[i] = parameterAdjust(i, v.f);
plugin_set_parameter(&p->p, parameterData[i].index, p->parameters[i]);
}
# endif
#endif
return Steinberg_kResultOk;
}
@ -534,7 +604,13 @@ static Steinberg_tresult pluginGetState(void* thisInterface, struct Steinberg_IB
TRACE("plugin get state\n");
if (state == NULL)
return Steinberg_kResultFalse;
#if DATA_PRODUCT_PARAMETERS_N > 0
#ifdef STATE_DSP_CUSTOM
pluginInstance *p = (pluginInstance *)((char *)thisInterface - offsetof(pluginInstance, vtblIComponent));
p->state = state;
if (plugin_state_save(&p->p) != 0)
return Steinberg_kResultFalse;
#else
# if DATA_PRODUCT_PARAMETERS_N > 0
pluginInstance *p = (pluginInstance *)((char *)thisInterface - offsetof(pluginInstance, vtblIComponent));
for (size_t i = 0; i < DATA_PRODUCT_PARAMETERS_N; i++) {
if (parameterInfo[i].flags & Steinberg_Vst_ParameterInfo_ParameterFlags_kIsReadOnly)
@ -548,6 +624,7 @@ static Steinberg_tresult pluginGetState(void* thisInterface, struct Steinberg_IB
if (n != 4)
return Steinberg_kResultFalse;
}
# endif
#endif
return Steinberg_kResultOk;
}
@ -1172,8 +1249,8 @@ static Steinberg_tresult plugViewAttached(void* thisInterface, void* parent, Ste
plugin_ui_callbacks cbs = {
/* .handle = */ (void *)v,
/* .format = */ "vst3",
/* .get_bindir = */ get_bindir_cb,
/* .get_datadir = */ get_datadir_cb,
/* .get_bindir = */ getBindirCb,
/* .get_datadir = */ getDatadirCb,
# if DATA_PRODUCT_PARAMETERS_N > 0
/* .set_parameter_begin = */ plugViewSetParameterBeginCb,
/* .set_parameter = */ plugViewSetParameterCb,
@ -1737,9 +1814,10 @@ static Steinberg_tresult controllerSetParamNormalized(void* thisInterface, Stein
controller *c = (controller *)((char *)thisInterface - offsetof(controller, vtblIEditController));
c->parameters[pi] = pi >= DATA_PRODUCT_PARAMETERS_N ? value : parameterAdjust(pi, parameterMap(pi, value));
# ifdef DATA_UI
for (size_t i = 0; i < c->viewsCount; i++)
if(c->views[i])
plugViewUpdateParameter(c->views[i], pi);
if (pi < DATA_PRODUCT_PARAMETERS_N)
for (size_t i = 0; i < c->viewsCount; i++)
if(c->views[i])
plugViewUpdateParameter(c->views[i], pi);
# endif
return Steinberg_kResultTrue;
#else

78
test/plugin.h
View File

@ -1,7 +1,7 @@
/*
* Tibia
*
* Copyright (C) 2023, 2024 Orastron Srl unipersonale
* Copyright (C) 2023-2025 Orastron Srl unipersonale
*
* Tibia is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -18,25 +18,28 @@
* File author: Stefano D'Angelo
*/
#include <stdint.h>
typedef struct plugin {
float sample_rate;
size_t delay_line_length;
plugin_callbacks cbs;
float gain;
float delay;
float cutoff;
char bypass;
float sample_rate;
size_t delay_line_length;
float * delay_line;
size_t delay_line_cur;
float z1;
float cutoff_k;
float yz1;
float gain;
float delay;
float cutoff;
char bypass;
float * delay_line;
size_t delay_line_cur;
float z1;
float cutoff_k;
float yz1;
} plugin;
static void plugin_init(plugin *instance, plugin_callbacks *cbs) {
(void)instance;
(void)cbs;
instance->cbs = *cbs;
}
static void plugin_fini(plugin *instance) {
@ -73,7 +76,7 @@ static void plugin_set_parameter(plugin *instance, size_t index, float value) {
instance->gain = ((2.6039890429412597e-4f * value + 0.032131027163547855f) * value + 1.f) / ((0.0012705124328080768f * value - 0.0666763481312185f) * value + 1.f);
break;
case plugin_parameter_delay:
instance->delay = 0.001f * value;
instance->delay = value;
break;
case plugin_parameter_cutoff:
instance->cutoff = value;
@ -94,8 +97,10 @@ static size_t calc_index(size_t cur, size_t delay, size_t len) {
}
static void plugin_process(plugin *instance, const float **inputs, float **outputs, size_t n_samples) {
//approx size_t delay = roundf(instance->sample_rate * instance->delay);
size_t delay = (size_t)(instance->sample_rate * instance->delay + 0.5f);
//approx const float gain = powf(10.f, 0.05f * instance->gain);
const float gain = ((2.6039890429412597e-4f * instance->gain + 0.032131027163547855f) * instance->gain + 1.f) / ((0.0012705124328080768f * instance->gain - 0.0666763481312185f) * instance->gain + 1.f);
//approx const size_t delay = roundf(instance->sample_rate * 0.001f * instance->delay);
const size_t delay = (size_t)(instance->sample_rate * 0.001f * instance->delay + 0.5f);
const float mA1 = instance->sample_rate / (instance->sample_rate + 6.283185307179586f * instance->cutoff * instance->cutoff_k);
for (size_t i = 0; i < n_samples; i++) {
instance->delay_line[instance->delay_line_cur] = inputs[0][i];
@ -105,7 +110,7 @@ static void plugin_process(plugin *instance, const float **inputs, float **outpu
instance->delay_line_cur = 0;
const float y = x + mA1 * (instance->z1 - x);
instance->z1 = y;
outputs[0][i] = instance->bypass ? inputs[0][i] : instance->gain * y;
outputs[0][i] = instance->bypass ? inputs[0][i] : gain * y;
instance->yz1 = outputs[0][i];
}
}
@ -116,3 +121,40 @@ static void plugin_midi_msg_in(plugin *instance, size_t index, const uint8_t * d
//approx instance->cutoff_k = powf(2.f, (1.f / 12.f) * (note - 60));
instance->cutoff_k = data[1] < 64 ? (-0.19558034980097166f * data[1] - 2.361735109225749f) / (data[1] - 75.57552349522389f) : (393.95397927344214f - 7.660826245588588f * data[1]) / (data[1] - 139.0755234952239f);
}
static void serialize_float(char *dest, float f) {
union { float f; uint32_t u; } v;
v.f = f;
dest[0] = v.u & 0xff;
dest[1] = (v.u & 0xff00) >> 8;
dest[2] = (v.u & 0xff0000) >> 16;
dest[3] = (v.u & 0xff000000) >> 24;
}
static float parse_float(const char *data) {
union { float f; uint32_t u; } v;
v.u = 0;
v.u |= data[0];
v.u |= (data[1] << 8);
v.u |= (data[2] << 16);
v.u |= (data[3] << 24);
return v.f;
}
static int plugin_state_save(plugin *instance) {
char data[13];
serialize_float(data, instance->gain);
serialize_float(data + 4, instance->delay);
serialize_float(data + 8, instance->cutoff);
data[12] = instance->bypass ? 1 : 0;
return instance->cbs.write_state(instance->cbs.handle, data, 13);
}
static void plugin_state_load(plugin *instance, const char *data, size_t length) {
(void)length;
instance->cbs.load_parameter(instance->cbs.handle, plugin_parameter_gain, parse_float(data));
instance->cbs.load_parameter(instance->cbs.handle, plugin_parameter_delay, parse_float(data + 4));
instance->cbs.load_parameter(instance->cbs.handle, plugin_parameter_cutoff, parse_float(data + 8));
instance->cbs.load_parameter(instance->cbs.handle, plugin_parameter_bypass, data[12] ? 1.f : 0.f);
}

3
test/product.json
View File

@ -137,6 +137,9 @@
"ui": {
"userResizable": true,
"selfResizable": false
},
"state": {
"dspCustom": true
}
}
}