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pass sample rate to state save/load

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This commit is contained in:
Stefano D'Angelo 2025-03-08 15:31:31 +01:00
parent c81cc828aa
commit f5c9ebab6a
3 changed files with 24 additions and 12 deletions
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8
templates/lv2/src/lv2.c
View File

@ -93,6 +93,7 @@ static float adjust_param(size_t index, float value) {
typedef struct {
plugin p;
float sample_rate;
#if DATA_PRODUCT_AUDIO_INPUT_CHANNELS_N > 0
const float * x[DATA_PRODUCT_AUDIO_INPUT_CHANNELS_N];
#endif
@ -212,7 +213,8 @@ static LV2_Handle instantiate(const struct LV2_Descriptor * descriptor, double s
};
plugin_init(&instance->p, &cbs);
plugin_set_sample_rate(&instance->p, sample_rate);
instance->sample_rate = (float)sample_rate;
plugin_set_sample_rate(&instance->p, instance->sample_rate);
size_t req = plugin_mem_req(&instance->p);
if (req != 0) {
instance->mem = malloc(req);
@ -451,7 +453,7 @@ static LV2_State_Status state_save(LV2_Handle instance, LV2_State_Store_Function
/* .set_parameter = */ NULL
# endif
};
return plugin_state_save(&i->p, &cbs) == 0 ? LV2_STATE_SUCCESS : LV2_STATE_ERR_UNKNOWN;
return plugin_state_save(&i->p, &cbs, i->sample_rate) == 0 ? LV2_STATE_SUCCESS : LV2_STATE_ERR_UNKNOWN;
}
static LV2_State_Status state_restore(LV2_Handle instance, LV2_State_Retrieve_Function retrieve, LV2_State_Handle handle, uint32_t flags, const LV2_Feature * const * features) {
@ -479,7 +481,7 @@ static LV2_State_Status state_restore(LV2_Handle instance, LV2_State_Retrieve_Fu
/* .set_parameter = */ state_set_parameter_cb
# endif
};
return plugin_state_load(&cbs, data, length) == 0 ? LV2_STATE_SUCCESS : LV2_STATE_ERR_UNKNOWN;
return plugin_state_load(&cbs, i->sample_rate, data, length) == 0 ? LV2_STATE_SUCCESS : LV2_STATE_ERR_UNKNOWN;
}
static const void * extension_data(const char * uri) {

22
templates/vst3/src/vst3.c
View File

@ -271,7 +271,9 @@ typedef struct pluginInstance {
Steinberg_uint32 refs;
Steinberg_FUnknown * context;
plugin p;
float sampleRate;
float lastSampleRate;
float curSampleRate;
float nextSampleRate;
#if DATA_PRODUCT_PARAMETERS_IN_N > 0
float parametersIn[DATA_PRODUCT_PARAMETERS_IN_N];
float parametersInSync[DATA_PRODUCT_PARAMETERS_IN_N];
@ -412,6 +414,9 @@ static Steinberg_tresult pluginInitialize(void *thisInterface, struct Steinberg_
if (p->context != NULL)
return Steinberg_kResultFalse;
p->context = context;
p->lastSampleRate = 0.f;
p->curSampleRate = 0.f;
p->nextSampleRate = 0.f;
plugin_callbacks cbs = {
/* .handle = */ (void *)p,
@ -628,7 +633,7 @@ static Steinberg_tresult pluginSetActive(void* thisInterface, Steinberg_TBool st
p->neededBusesActive = 0;
# endif
#endif
plugin_set_sample_rate(&p->p, p->sampleRate);
plugin_set_sample_rate(&p->p, p->nextSampleRate);
size_t req = plugin_mem_req(&p->p);
if (req != 0) {
p->mem = malloc(req);
@ -636,8 +641,11 @@ static Steinberg_tresult pluginSetActive(void* thisInterface, Steinberg_TBool st
return Steinberg_kOutOfMemory;
plugin_mem_set(&p->p, p->mem);
}
p->curSampleRate = p->nextSampleRate;
p->lastSampleRate = p->nextSampleRate;
plugin_reset(&p->p);
}
} else
p->curSampleRate = 0.f;
return Steinberg_kResultOk;
}
@ -667,7 +675,7 @@ static Steinberg_tresult pluginSetState(void* thisInterface, struct Steinberg_IB
/* .set_parameter = */ pluginStateSetParameterCb
# endif
};
int err = plugin_state_load(&cbs, data, length);
int err = plugin_state_load(&cbs, p->curSampleRate, data, length);
#else
// we need to provide a default implementation because of certain hosts (e.g. Ardour)
int err = 0;
@ -723,7 +731,7 @@ static Steinberg_tresult pluginGetState(void* thisInterface, struct Steinberg_IB
/* .set_parameter = */ NULL
# endif
};
int err = plugin_state_save(&p->p, &cbs);
int err = plugin_state_save(&p->p, &cbs, p->lastSampleRate);
#else
// we need to provide a default implementation because of certain hosts (e.g. Ardour)
int err = 0;
@ -855,7 +863,7 @@ static Steinberg_uint32 pluginGetLatencySamples(void* thisInterface) {
static Steinberg_tresult pluginSetupProcessing(void* thisInterface, struct Steinberg_Vst_ProcessSetup* setup) {
TRACE("plugin IAudioProcessor setup processing\n");
pluginInstance *p = (pluginInstance *)((char *)thisInterface - offsetof(pluginInstance, vtblIAudioProcessor));
p->sampleRate = (float)setup->sampleRate;
p->nextSampleRate = (float)setup->sampleRate;
return Steinberg_kResultOk;
}
@ -1858,7 +1866,7 @@ static Steinberg_tresult controllerSetComponentState(void* thisInterface, struct
/* .set_parameter = */ controllerStateSetParameterCb
# endif
};
int err = plugin_state_load(&cbs, data, length);
int err = plugin_state_load(&cbs, -1.f, data, length); // -1.f means "does not apply"
#else
// we need to provide a default implementation because of certain hosts (e.g. Reaper)
int err = 0;

6
test/plugin.h
View File

@ -138,7 +138,8 @@ static float parse_float(const uint8_t *data) {
return v.f;
}
static int plugin_state_save(plugin *instance, const plugin_state_callbacks *cbs) {
static int plugin_state_save(plugin *instance, const plugin_state_callbacks *cbs, float last_sample_rate) {
(void)last_sample_rate;
uint8_t data[13];
cbs->lock(cbs->handle);
const float gain = instance->gain;
@ -159,7 +160,8 @@ static char x_isnan(float x) {
return ((v.u & 0x7f800000) == 0x7f800000) && (v.u & 0x7fffff);
}
static int plugin_state_load(const plugin_state_callbacks *cbs, const char *data, size_t length) {
static int plugin_state_load(const plugin_state_callbacks *cbs, float cur_sample_rate, const char *data, size_t length) {
(void)cur_sample_rate;
if (length != 13)
return -1;
const uint8_t *d = (const uint8_t *)data;