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7cb7f6c126b45b1817f79599b5859040394676e3
prism/plugin/Source/PluginEditor.cpp
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Boof2015 7cb7f6c126 safe compilation
2026-06-03 10:19:21 -04:00

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#include "PluginEditor.h"
#include "SpectrumEngine.h"
#include "OscilloscopeEngine.h"
#include "VUMeterEngine.h"
#include "LUFSMeterEngine.h"
#include "VectorscopeEngine.h"
#include "SpectrogramEngine.h"
#include "WaveformEngine.h"
#include <cmath>
#include <cstdlib>
#include <cstring>
#ifndef PRISM_EMBED_WEBUI
#define PRISM_EMBED_WEBUI 0
#endif
#ifndef PRISM_LINUX_UI_MODE_NAME
#define PRISM_LINUX_UI_MODE_NAME "webview"
#endif
#ifndef PRISM_LINUX_UI_DIAGNOSTICS
#define PRISM_LINUX_UI_DIAGNOSTICS 0
#endif
#if PRISM_EMBED_WEBUI
#include "BinaryData.h"
#endif
#if JUCE_MAC
#include "WebViewFrameRate.h"
#endif
namespace
{
const juce::Identifier kRestoreSettingsEvent { "prismRestoreSettings" };
constexpr int kDrainCapacity = 1 << 16;
#if JUCE_WINDOWS
constexpr int kFallbackWindowsFrameRateHz = 60;
constexpr int kMaxWindowsFrameRateHz = 240;
int resolveWindowsFrameRateHz(const juce::Component& component)
{
const auto& displays = juce::Desktop::getInstance().getDisplays();
if (const auto* display = displays.getDisplayForRect(component.getScreenBounds()))
{
const auto frequency = display->verticalFrequencyHz;
if (frequency.has_value() && std::isfinite(*frequency) && *frequency > 0.0)
return juce::jlimit(30, kMaxWindowsFrameRateHz, (int) std::lround(*frequency));
}
return kFallbackWindowsFrameRateHz;
}
#endif
#if JUCE_LINUX
constexpr int kLinuxFrameRateHz = 20;
#if PRISM_LINUX_UI_DIAGNOSTICS
juce::String envValue(const char* name)
{
if (const auto* value = std::getenv(name); value != nullptr && value[0] != '\0')
return value;
return "<unset>";
}
juce::File linuxDiagnosticLogFile()
{
juce::File baseDir;
if (const auto* xdgState = std::getenv("XDG_STATE_HOME"); xdgState != nullptr && xdgState[0] != '\0')
baseDir = juce::File(juce::String(xdgState));
else if (const auto* home = std::getenv("HOME"); home != nullptr && home[0] != '\0')
baseDir = juce::File(juce::String(home)).getChildFile(".local").getChildFile("state");
else
baseDir = juce::File::getSpecialLocation(juce::File::userApplicationDataDirectory);
return baseDir.getChildFile("prism").getChildFile("plugin-ui-diagnostics.log");
}
void logLinuxDiagnostic(const juce::String& message)
{
const auto file = linuxDiagnosticLogFile();
file.getParentDirectory().createDirectory();
file.appendText(juce::Time::getCurrentTime().toISO8601(true) + " " + message + "\n",
false,
false,
"\n");
}
juce::String wrapperTypeName()
{
switch (juce::PluginHostType::getPluginLoadedAs())
{
case juce::AudioProcessor::wrapperType_VST3: return "VST3";
case juce::AudioProcessor::wrapperType_VST: return "VST2";
case juce::AudioProcessor::wrapperType_Standalone: return "Standalone";
case juce::AudioProcessor::wrapperType_AudioUnit: return "AudioUnit";
case juce::AudioProcessor::wrapperType_AudioUnitv3:return "AudioUnitv3";
case juce::AudioProcessor::wrapperType_AAX: return "AAX";
case juce::AudioProcessor::wrapperType_LV2: return "LV2";
case juce::AudioProcessor::wrapperType_Unity: return "Unity";
default: return "Undefined";
}
}
juce::String linuxHostDisplayContext()
{
const juce::PluginHostType host;
juce::String context;
context << "mode=" << PRISM_LINUX_UI_MODE_NAME
<< " host=\"" << host.getHostDescription() << "\""
<< " wrapper=" << wrapperTypeName()
<< " display=" << envValue("DISPLAY")
<< " waylandDisplay=" << envValue("WAYLAND_DISPLAY")
<< " sessionType=" << envValue("XDG_SESSION_TYPE")
<< " gdkBackend=" << envValue("GDK_BACKEND")
<< " desktop=" << envValue("XDG_CURRENT_DESKTOP");
return context;
}
juce::String describeBounds(const juce::Rectangle<int>& bounds)
{
juce::String text;
text << bounds.getX() << "," << bounds.getY()
<< " " << bounds.getWidth() << "x" << bounds.getHeight();
return text;
}
#endif
#endif
std::unique_ptr<ScopeEngine> makeEngine()
{
#if defined(PRISM_SCOPE_WAVEFORM) && PRISM_SCOPE_WAVEFORM
return std::make_unique<WaveformEngine>();
#elif defined(PRISM_SCOPE_SPECTROGRAM) && PRISM_SCOPE_SPECTROGRAM
return std::make_unique<SpectrogramEngine>();
#elif defined(PRISM_SCOPE_VECTORSCOPE) && PRISM_SCOPE_VECTORSCOPE
return std::make_unique<VectorscopeEngine>();
#elif defined(PRISM_SCOPE_LUFSMETER) && PRISM_SCOPE_LUFSMETER
return std::make_unique<LUFSMeterEngine>();
#elif defined(PRISM_SCOPE_VUMETER) && PRISM_SCOPE_VUMETER
return std::make_unique<VUMeterEngine>();
#elif defined(PRISM_SCOPE_OSCILLOSCOPE) && PRISM_SCOPE_OSCILLOSCOPE
return std::make_unique<OscilloscopeEngine>();
#else
return std::make_unique<SpectrumEngine>();
#endif
}
#if PRISM_USE_DEV_SERVER
const juce::String kDevServerUrl { "http://localhost:5174" };
#elif PRISM_EMBED_WEBUI
const char* getWebResourceData(const juce::String& name, int& dataSize)
{
dataSize = 0;
for (int i = 0; i < BinaryData::namedResourceListSize; ++i)
{
if (name == juce::String(BinaryData::originalFilenames[i]))
return BinaryData::getNamedResource(BinaryData::namedResourceList[i], dataSize);
}
return nullptr;
}
juce::String mimeForExtension(const juce::String& name)
{
if (name.endsWithIgnoreCase(".html")) return "text/html";
if (name.endsWithIgnoreCase(".js")) return "text/javascript";
if (name.endsWithIgnoreCase(".css")) return "text/css";
if (name.endsWithIgnoreCase(".svg")) return "image/svg+xml";
if (name.endsWithIgnoreCase(".json")) return "application/json";
if (name.endsWithIgnoreCase(".woff2")) return "font/woff2";
if (name.endsWithIgnoreCase(".woff")) return "font/woff";
if (name.endsWithIgnoreCase(".png")) return "image/png";
return "application/octet-stream";
}
std::optional<juce::WebBrowserComponent::Resource> provideResource(const juce::String& url)
{
auto name = (url == "/") ? juce::String("index.html")
: url.fromLastOccurrenceOf("/", false, false);
name = name.upToFirstOccurrenceOf("?", false, false);
int dataSize = 0;
if (const char* data = getWebResourceData(name, dataSize))
{
std::vector<std::byte> bytes ((size_t) dataSize);
std::memcpy (bytes.data(), data, (size_t) dataSize);
return juce::WebBrowserComponent::Resource { std::move (bytes), mimeForExtension (name) };
}
return std::nullopt;
}
juce::String getResourceProviderOrigin()
{
return juce::WebBrowserComponent::getResourceProviderRoot().trimCharactersAtEnd("/");
}
#if JUCE_LINUX
juce::File writeLinuxWebViewIndexFile()
{
int dataSize = 0;
const char* data = getWebResourceData("index.html", dataSize);
if (data == nullptr || dataSize <= 0)
return {};
const auto webViewDir =
juce::File::getSpecialLocation(juce::File::userApplicationDataDirectory)
.getChildFile("prism")
.getChildFile("plugin-webview");
if (! webViewDir.createDirectory())
return {};
auto indexFile = webViewDir.getChildFile("index.html");
if (! indexFile.replaceWithData(data, (size_t) dataSize))
return {};
return indexFile;
}
#endif
#endif
#if JUCE_LINUX
juce::String makeWebSmokeUrl()
{
const juce::String html =
"<!doctype html><html><head><meta charset=\"utf-8\">"
"<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">"
"<style>html,body{width:100%;height:100%;margin:0;background:#000;color:rgba(255,255,255,.82);"
"font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}body{display:grid;place-items:center;}"
"#status{padding:20px;text-align:center;white-space:pre-wrap;}</style></head>"
"<body><div id=\"status\">Prism WebView smoke test\\nWaiting for JUCE bridge...</div>"
"<script>"
"function ready(){var s=document.getElementById('status');"
"try{if(window.__JUCE__&&window.__JUCE__.backend){window.__JUCE__.backend.emitEvent('prismReady',{});"
"if(s)s.textContent='Prism WebView smoke test\\nJUCE bridge emitted prismReady';return;}}"
"catch(e){if(s)s.textContent='Prism WebView smoke test\\n'+String(e&&e.message||e);return;}"
"setTimeout(ready,50);}ready();"
"</script></body></html>";
return "data:text/html;charset=utf-8," + juce::URL::addEscapeChars(html, false);
}
class FloatingWebViewWindow final : public juce::DocumentWindow
{
public:
FloatingWebViewWindow()
: juce::DocumentWindow("Prism WebView diagnostic",
juce::Colours::black,
juce::DocumentWindow::closeButton)
{
setUsingNativeTitleBar(true);
setResizable(true, true);
}
void closeButtonPressed() override
{
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("floating_webview closeButtonPressed");
#endif
setVisible(false);
}
};
#endif
juce::WebBrowserComponent::Options makeWebOptions(PrismSpectrumEditor& editor, const char* scopeId)
{
auto options = juce::WebBrowserComponent::Options{}
.withNativeIntegrationEnabled()
.withInitialisationData("prismScope", juce::String(scopeId))
.withEventListener("prismConfig", [&editor](juce::var v) { editor.onPrismConfig(std::move(v)); })
.withEventListener("prismReady", [&editor](juce::var) { editor.onPrismReady(); })
.withEventListener("prismSpectrogramConfig", [&editor](juce::var v) { editor.onScopeNativeConfig(std::move(v)); })
.withEventListener("prismSettingsPanel", [&editor](juce::var v) { editor.onSettingsPanel(std::move(v)); });
#if JUCE_WINDOWS
options = options.withBackend(juce::WebBrowserComponent::Options::Backend::webview2);
// WebView2's default user-data folder is created next to the host executable.
// For plugins installed under Program Files\Common Files\VST3\..., that path
// is read-only to the (non-admin) DAW process; WebView2 may fail to
// initialise, leaving a blank webview or canceled navigation page.
// Point it at a writable per-user folder instead (JUCE's docs flag this
// explicitly for plugin projects).
const auto webView2DataDir =
juce::File::getSpecialLocation(juce::File::userApplicationDataDirectory)
.getChildFile("prism")
.getChildFile("WebView2");
webView2DataDir.createDirectory();
options = options.withWinWebView2Options(
juce::WebBrowserComponent::Options::WinWebView2{}.withUserDataFolder(webView2DataDir));
#endif
#if PRISM_EMBED_WEBUI
options = options.withResourceProvider(
[](const auto& url) { return provideResource(url); },
getResourceProviderOrigin());
#endif
return options;
}
}
PrismSpectrumEditor::PrismSpectrumEditor(PrismSpectrumProcessor& p)
: juce::AudioProcessorEditor(&p),
processorRef(p),
engine(makeEngine())
{
drainLeft.assign((size_t) kDrainCapacity, 0.0f);
drainRight.assign((size_t) kDrainCapacity, 0.0f);
#if JUCE_LINUX
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("editor constructed scope=" + juce::String(engine->scopeId())
+ " " + linuxHostDisplayContext()
+ " logFile=" + linuxDiagnosticLogFile().getFullPathName());
#endif
#endif
loadUi();
// Per-scope sizing: open at the scope's preferred default, with a per-scope min.
const auto pref = engine->preferredSize();
setResizable(true, true);
setResizeLimits(pref.minWidth, pref.minHeight, 4096, 4096);
setSize(pref.defaultWidth, pref.defaultHeight);
}
PrismSpectrumEditor::~PrismSpectrumEditor()
{
#if JUCE_WINDOWS || JUCE_LINUX
stopTimer();
#endif
#if JUCE_LINUX
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("editor destructed scope=" + juce::String(engine->scopeId())
+ " mode=" + juce::String(PRISM_LINUX_UI_MODE_NAME));
#endif
floatingWebViewWindow.reset();
#endif
webViewReady = false;
}
void PrismSpectrumEditor::resized()
{
if (webView != nullptr && webView->getParentComponent() == this)
webView->setBounds(getLocalBounds());
webViewFallback.setBounds(getLocalBounds());
#if JUCE_LINUX
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("editor resized local=" + describeBounds(getLocalBounds())
+ " screen=" + describeBounds(getScreenBounds())
+ " mode=" + juce::String(PRISM_LINUX_UI_MODE_NAME));
#endif
#endif
}
void PrismSpectrumEditor::loadUi()
{
#if JUCE_LINUX
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("loadUi " + linuxHostDisplayContext());
#endif
#if defined(PRISM_LINUX_UI_MODE_NATIVE_SMOKE) && PRISM_LINUX_UI_MODE_NATIVE_SMOKE
loadNativeSmoke();
return;
#elif defined(PRISM_LINUX_UI_MODE_WEB_SMOKE) && PRISM_LINUX_UI_MODE_WEB_SMOKE
loadWebSmoke();
return;
#elif defined(PRISM_LINUX_UI_MODE_FLOATING_WEBVIEW) && PRISM_LINUX_UI_MODE_FLOATING_WEBVIEW
loadFloatingWebView();
return;
#endif
#endif
loadEmbeddedWebView();
}
bool PrismSpectrumEditor::createWebView()
{
auto options = makeWebOptions(*this, engine->scopeId());
#if JUCE_WINDOWS
if (! juce::WebBrowserComponent::areOptionsSupported(options))
{
showWebViewFallback();
return false;
}
#endif
#if JUCE_LINUX
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("creating WebBrowserComponent mode=" + juce::String(PRISM_LINUX_UI_MODE_NAME));
#endif
#endif
webView = std::make_unique<juce::WebBrowserComponent>(options);
return true;
}
void PrismSpectrumEditor::loadEmbeddedWebView()
{
if (! createWebView())
return;
addAndMakeVisible(*webView);
#if PRISM_USE_DEV_SERVER
#if JUCE_LINUX
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("navigating embedded WebView url=" + kDevServerUrl);
#endif
#endif
webView->goToURL(kDevServerUrl);
#elif PRISM_EMBED_WEBUI
#if JUCE_LINUX
const auto indexFile = writeLinuxWebViewIndexFile();
if (indexFile.existsAsFile())
{
const auto url = juce::URL(indexFile).toString(false);
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("navigating embedded WebView url=" + url);
#endif
webView->goToURL(url);
return;
}
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("navigating embedded WebView url=" + juce::WebBrowserComponent::getResourceProviderRoot());
#endif
#endif
webView->goToURL(juce::WebBrowserComponent::getResourceProviderRoot());
#endif
}
#if JUCE_LINUX
void PrismSpectrumEditor::showLinuxDiagnosticPlaceholder(const juce::String& text)
{
webViewFallback.setText(text, juce::dontSendNotification);
webViewFallback.setJustificationType(juce::Justification::centred);
webViewFallback.setColour(juce::Label::backgroundColourId, juce::Colours::black);
webViewFallback.setColour(juce::Label::textColourId, juce::Colour(0xffe5e7eb));
webViewFallback.setMinimumHorizontalScale(0.7f);
addAndMakeVisible(webViewFallback);
}
void PrismSpectrumEditor::loadNativeSmoke()
{
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("native_smoke loaded");
#endif
webViewReady = true;
showLinuxDiagnosticPlaceholder("Prism native smoke test\n"
"Root JUCE editor rendered without WebView\n"
"Mode: native_smoke");
}
void PrismSpectrumEditor::loadWebSmoke()
{
if (! createWebView())
return;
addAndMakeVisible(*webView);
const auto url = makeWebSmokeUrl();
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("navigating web_smoke WebView url=data:text/html;charset=utf-8,<inline smoke page>");
#endif
webView->goToURL(url);
}
void PrismSpectrumEditor::loadFloatingWebView()
{
showLinuxDiagnosticPlaceholder("Prism floating WebView diagnostic\n"
"Embedded native placeholder is visible\n"
"The real Prism WebView should open in a separate window");
if (! createWebView())
return;
floatingWebViewWindow = std::make_unique<FloatingWebViewWindow>();
floatingWebViewWindow->setContentNonOwned(webView.get(), false);
const auto pref = engine->preferredSize();
floatingWebViewWindow->setSize(pref.defaultWidth, pref.defaultHeight);
floatingWebViewWindow->centreWithSize(pref.defaultWidth, pref.defaultHeight);
floatingWebViewWindow->setVisible(true);
floatingWebViewWindow->toFront(true);
#if PRISM_USE_DEV_SERVER
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("navigating floating WebView url=" + kDevServerUrl);
#endif
webView->goToURL(kDevServerUrl);
#elif PRISM_EMBED_WEBUI
const auto indexFile = writeLinuxWebViewIndexFile();
if (indexFile.existsAsFile())
{
const auto url = juce::URL(indexFile).toString(false);
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("navigating floating WebView url=" + url);
#endif
webView->goToURL(url);
return;
}
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("navigating floating WebView url=" + juce::WebBrowserComponent::getResourceProviderRoot());
#endif
webView->goToURL(juce::WebBrowserComponent::getResourceProviderRoot());
#endif
}
#endif
void PrismSpectrumEditor::showWebViewFallback()
{
webViewFallback.setText(
"Prism needs the Microsoft Edge WebView2 Runtime to show this plugin on Windows.\n"
"Install the Evergreen WebView2 Runtime from Microsoft, then reopen the plugin.",
juce::dontSendNotification);
webViewFallback.setJustificationType(juce::Justification::centred);
webViewFallback.setColour(juce::Label::backgroundColourId, juce::Colour(0xff111216));
webViewFallback.setColour(juce::Label::textColourId, juce::Colour(0xfff4f6f8));
webViewFallback.setMinimumHorizontalScale(0.75f);
addAndMakeVisible(webViewFallback);
}
#if JUCE_WINDOWS || JUCE_LINUX
void PrismSpectrumEditor::timerCallback()
{
renderFrame();
}
#endif
void PrismSpectrumEditor::startFrameDriver()
{
if (webView == nullptr || ! webViewReady || frameDriverStarted)
return;
frameDriverStarted = true;
#if JUCE_WINDOWS
startTimerHz(resolveWindowsFrameRateHz(*this));
#elif JUCE_LINUX
startTimerHz(kLinuxFrameRateHz);
#else
// Drive frames at the display's refresh rate (adapts to 60/120/144 Hz).
vblank = juce::VBlankAttachment(this, [this] { renderFrame(); });
#endif
}
void PrismSpectrumEditor::onSettingsPanel(juce::var payload)
{
const int height = juce::jmax(0, (int) payload.getProperty("height", 0));
const int delta = height - settingsPanelHeight;
if (delta == 0)
return;
settingsPanelHeight = height;
// Grow/shrink the window by exactly the panel height so the scope area is
// unchanged. Deliberately NOT touching resize limits — doing so makes JUCE's
// constrainer snap the window and double the applied size.
setSize(getWidth(), getHeight() + delta);
}
void PrismSpectrumEditor::onPrismConfig(juce::var payload)
{
const auto settings = payload.getProperty("settings", juce::var());
// Persist only genuine per-instance overrides (persist=true). App-default /
// restore-driven updates carry persist=false so a non-overridden instance
// keeps re-reading the app's current settings on reopen.
if ((bool) payload.getProperty("persist", false))
processorRef.setSettingsJson(juce::JSON::toString(settings));
engine->configure(settings);
}
void PrismSpectrumEditor::onPrismReady()
{
#if JUCE_LINUX
#if PRISM_LINUX_UI_DIAGNOSTICS
logLinuxDiagnostic("prismReady received mode=" + juce::String(PRISM_LINUX_UI_MODE_NAME)
+ " scope=" + juce::String(engine->scopeId()));
#endif
#endif
webViewReady = true;
pushRestoreSettings();
sendAppDefaults();
startFrameDriver();
}
void PrismSpectrumEditor::onScopeNativeConfig(juce::var payload)
{
engine->configureNative(payload);
}
void PrismSpectrumEditor::pushRestoreSettings()
{
if (webView == nullptr)
return;
auto* obj = new juce::DynamicObject();
obj->setProperty("json", processorRef.getSettingsJson());
webView->emitEventIfBrowserIsVisible(kRestoreSettingsEvent, juce::var(obj));
}
void PrismSpectrumEditor::sendAppDefaults()
{
if (webView == nullptr)
return;
// Resolve Prism's app-data dir to match Electron's userData per platform.
// macOS: userApplicationDataDirectory == ~/Library, so the Electron path is
// ~/Library/Application Support/prism (the extra subfolder only exists on mac).
// Windows/Linux: JUCE's userApplicationDataDirectory already points at the right
// per-platform config root (%APPDATA% / ~/.config), so no extra append needed.
#if JUCE_MAC
const auto appData = juce::File::getSpecialLocation(juce::File::userApplicationDataDirectory)
.getChildFile("Application Support")
.getChildFile("prism");
#else
const auto appData = juce::File::getSpecialLocation(juce::File::userApplicationDataDirectory)
.getChildFile("prism");
#endif
const auto docs = juce::File::getSpecialLocation(juce::File::userDocumentsDirectory);
const auto themesDir = docs.getChildFile("Prism Themes");
const auto profilesDir = docs.getChildFile("Prism Profiles");
juce::String themeId, themeFile, profileJson;
if (const auto themeState = juce::JSON::parse(appData.getChildFile("theme-state.json"));
auto* obj = themeState.getDynamicObject())
themeId = obj->getProperty("activeThemeId").toString();
if (themeId.isNotEmpty())
{
const auto file = themesDir.getChildFile(themeId + ".iro");
if (file.existsAsFile())
themeFile = file.loadFileAsString();
}
juce::String activeProfileId;
if (const auto profileState = juce::JSON::parse(appData.getChildFile("profile-state.json"));
auto* obj = profileState.getDynamicObject())
activeProfileId = obj->getProperty("activeProfileId").toString();
if (activeProfileId.isNotEmpty() && profilesDir.isDirectory())
{
for (const auto& file : profilesDir.findChildFiles(juce::File::findFiles, false, "*.prsm"))
{
const auto content = file.loadFileAsString();
if (const auto parsed = juce::JSON::parse(content); auto* o = parsed.getDynamicObject())
{
if (o->getProperty("id").toString() == activeProfileId)
{
profileJson = content;
break;
}
}
}
}
auto* payload = new juce::DynamicObject();
payload->setProperty("themeId", themeId);
payload->setProperty("themeFile", themeFile);
payload->setProperty("profileJson", profileJson);
webView->emitEventIfBrowserIsVisible(juce::Identifier("prismAppDefaults"), juce::var(payload));
}
void PrismSpectrumEditor::renderFrame()
{
if (webView == nullptr || ! webViewReady)
return;
#if JUCE_MAC
if (! frameRateUncapped && uncapAttempts < 300)
{
++uncapAttempts;
if (auto* peer = getPeer())
frameRateUncapped = prismUncapWebViewFrameRate(peer->getNativeHandle());
}
#endif
const double sampleRate = processorRef.getSampleRateHz();
if (sampleRate > 0.0 && sampleRate != lastSampleRate)
{
engine->setSampleRate(sampleRate);
lastSampleRate = sampleRate;
}
const int drained = processorRef.drainStereo(drainLeft.data(), drainRight.data(), (int) drainLeft.size());
#if JUCE_LINUX
if (drained <= 0)
return;
#endif
engine->process(drainLeft.data(), drainRight.data(), drained);
webView->emitEventIfBrowserIsVisible(engine->frameEventId(), engine->buildFrame(sampleRate));
}
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