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VST Client: Ensure audioMasterIOChanged is sent when latency is updated

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reuk 2021-04-22 16:46:03 +01:00
parent c0bcba8d71
commit 0e47da1474
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1 changed files with 24 additions and 3 deletions
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27
modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp
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@ -1327,23 +1327,44 @@ private:
void update (const ChangeDetails& details)
{
if (details.latencyChanged)
{
owner.vstEffect.initialDelay = owner.processor->getLatencySamples();
callbackBits |= audioMasterIOChangedBit;
}
if (details.parameterInfoChanged || details.programChanged)
triggerAsyncUpdate();
callbackBits |= audioMasterUpdateDisplayBit;
triggerAsyncUpdate();
}
private:
void handleAsyncUpdate() override
{
const auto callbacksToFire = callbackBits.exchange (0);
if (auto* callback = owner.hostCallback)
{
callback (&owner.vstEffect, Vst2::audioMasterUpdateDisplay, 0, 0, nullptr, 0);
callback (&owner.vstEffect, Vst2::audioMasterIOChanged, 0, 0, nullptr, 0);
struct FlagPair
{
Vst2::AudioMasterOpcodesX opcode;
int bit;
};
constexpr FlagPair pairs[] { { Vst2::audioMasterUpdateDisplay, audioMasterUpdateDisplayBit },
{ Vst2::audioMasterIOChanged, audioMasterIOChangedBit } };
for (const auto& pair : pairs)
if ((callbacksToFire & pair.bit) != 0)
callback (&owner.vstEffect, pair.opcode, 0, 0, nullptr, 0);
}
}
static constexpr auto audioMasterUpdateDisplayBit = 1 << 0;
static constexpr auto audioMasterIOChangedBit = 1 << 1;
JuceVSTWrapper& owner;
std::atomic<int> callbackBits { 0 };
};
static JuceVSTWrapper* getWrapper (Vst2::AEffect* v) noexcept { return static_cast<JuceVSTWrapper*> (v->object); }