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G0.4: save/restore preset quanh reload khi close GUI (captureState/restoreState, memorystream link truc tiep)

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Lộc Phạm
2026-08-15 20:04:56 +07:00
parent 5313d85926
commit eac7f2feb8
6 changed files with 77 additions and 1 deletions
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native_bridge/src/Vst3Instrument.cpp
+58
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@@ -18,6 +18,7 @@
#include "public.sdk/source/vst/hosting/processdata.h"
#include "public.sdk/source/vst/hosting/eventlist.h"
#include "public.sdk/source/vst/hosting/parameterchanges.h"
#include "public.sdk/source/common/memorystream.h"
#include "pluginterfaces/vst/ivstaudioprocessor.h"
#include "pluginterfaces/vst/ivstcomponent.h"
@@ -525,6 +526,59 @@ bool Vst3Instrument::openGUI(void* parentWindowHandle) {
#endif
}
// G0.4: capture the plugin's full state (component + edit controller) into
// buffers so a GUI reopen can restore the preset after reload().
void Vst3Instrument::captureState() {
#ifndef HAVE_VST3SDK
return;
#else
auto* s = static_cast<Vst3HostState*>(state_);
if (!s) return;
savedComponentState_.clear();
savedControllerState_.clear();
Steinberg::MemoryStream stream;
if (s->component && s->component->getState(&stream) == kResultOk && stream.getSize() > 0) {
savedComponentState_.assign(stream.getData(), stream.getData() + stream.getSize());
std::cout << "[Vst3Instrument] state captured ch=" << channel_
<< " component=" << savedComponentState_.size() << "B" << std::endl;
}
if (s->controller && !s->controllerIsComponent &&
s->controller->getState(&stream) == kResultOk && stream.getSize() > 0) {
savedControllerState_.assign(stream.getData(), stream.getData() + stream.getSize());
}
#endif
}
// G0.4: restore the captured state onto the freshly loaded instance.
void Vst3Instrument::restoreState() {
#ifndef HAVE_VST3SDK
return;
#else
auto* s = static_cast<Vst3HostState*>(state_);
if (!s) return;
if (!savedComponentState_.empty()) {
Steinberg::MemoryStream stream;
stream.write(savedComponentState_.data(), (int32)savedComponentState_.size(), nullptr);
stream.seek(0, Steinberg::IBStream::kIBSeekSet, nullptr);
bool okComp = s->component && s->component->setState(&stream) == kResultOk;
if (!okComp) {
std::cerr << "[Vst3Instrument] setState(component) failed ch=" << channel_ << std::endl;
} else {
std::cout << "[Vst3Instrument] state restored ch=" << channel_
<< " component=" << savedComponentState_.size() << "B" << std::endl;
}
}
if (!savedControllerState_.empty()) {
Steinberg::MemoryStream stream;
stream.write(savedControllerState_.data(), (int32)savedControllerState_.size(), nullptr);
stream.seek(0, Steinberg::IBStream::kIBSeekSet, nullptr);
if (s->controller && s->controller->setState(&stream) != kResultOk) {
std::cerr << "[Vst3Instrument] setState(controller) failed ch=" << channel_ << std::endl;
}
}
#endif
}
bool Vst3Instrument::reloadForGUI() {
#ifndef HAVE_VST3SDK
return false;
@@ -539,9 +593,13 @@ bool Vst3Instrument::reloadForGUI() {
// PHAN NAY PHAI chay tren worker thread — apartment cua channel song
// o day; chay tren thread tam thi apartment moi chet ngay sau do
// (reopen lan sau -> treo nhu bridge_like).
// G0.4: reload() terminates + recreates the instance — capture the
// preset first, restore it after, so the GUI reopen keeps the sound.
captureState();
if (!reload()) return false;
s = static_cast<Vst3HostState*>(state_);
if (!s || !s->controller) return false;
restoreState();
}
return true;
#endif