330 lines
10 KiB
C++
330 lines
10 KiB
C++
#include "RuntimeLiveState.h"
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#include "RuntimeParameterUtils.h"
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#include <algorithm>
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#include <cctype>
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#include <cmath>
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#include <cstddef>
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namespace
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{
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constexpr double kOscSmoothingReferenceFps = 60.0;
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constexpr double kOscSmoothingMaxStepSeconds = 0.25;
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std::string SimplifyOscControlKey(const std::string& text)
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{
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std::string simplified;
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for (unsigned char ch : text)
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{
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if (std::isalnum(ch))
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simplified.push_back(static_cast<char>(std::tolower(ch)));
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}
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return simplified;
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}
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bool MatchesOscControlKey(const std::string& candidate, const std::string& key)
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{
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return candidate == key || SimplifyOscControlKey(candidate) == SimplifyOscControlKey(key);
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}
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double ClampOscAlpha(double value)
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{
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return (std::max)(0.0, (std::min)(1.0, value));
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}
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double ComputeTimeBasedOscAlpha(double smoothing, double deltaSeconds)
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{
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const double clampedSmoothing = ClampOscAlpha(smoothing);
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if (clampedSmoothing <= 0.0)
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return 0.0;
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if (clampedSmoothing >= 1.0)
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return 1.0;
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const double clampedDeltaSeconds = (std::max)(0.0, (std::min)(kOscSmoothingMaxStepSeconds, deltaSeconds));
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if (clampedDeltaSeconds <= 0.0)
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return 0.0;
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const double frameScale = clampedDeltaSeconds * kOscSmoothingReferenceFps;
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return ClampOscAlpha(1.0 - std::pow(1.0 - clampedSmoothing, frameScale));
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}
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JsonValue BuildOscCommitValue(const ShaderParameterDefinition& definition, const ShaderParameterValue& value)
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{
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switch (definition.type)
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{
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case ShaderParameterType::Boolean:
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return JsonValue(value.booleanValue);
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case ShaderParameterType::Enum:
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return JsonValue(value.enumValue);
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case ShaderParameterType::Text:
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return JsonValue(value.textValue);
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case ShaderParameterType::Trigger:
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case ShaderParameterType::Float:
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return JsonValue(value.numberValues.empty() ? 0.0 : value.numberValues.front());
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case ShaderParameterType::Vec2:
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case ShaderParameterType::Color:
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{
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JsonValue array = JsonValue::MakeArray();
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for (double number : value.numberValues)
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array.pushBack(JsonValue(number));
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return array;
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}
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}
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return JsonValue();
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}
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}
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void RuntimeLiveState::Clear()
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{
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mOscOverlayStates.clear();
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}
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void RuntimeLiveState::ClearForLayerKey(const std::string& layerKey)
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{
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for (auto it = mOscOverlayStates.begin(); it != mOscOverlayStates.end();)
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{
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if (OverlayMatchesLayerKey(it->second, layerKey))
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it = mOscOverlayStates.erase(it);
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else
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++it;
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}
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}
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bool RuntimeLiveState::OverlayMatchesLayerKey(const OscOverlayState& overlay, const std::string& layerKey)
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{
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return MatchesOscControlKey(overlay.layerKey, layerKey);
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}
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bool RuntimeLiveState::TryResolveOverlayTarget(
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const OscOverlayState& overlay,
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const std::vector<RuntimeRenderState>& states,
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std::vector<RuntimeRenderState>::const_iterator& stateIt,
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std::vector<ShaderParameterDefinition>::const_iterator& definitionIt)
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{
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stateIt = std::find_if(states.begin(), states.end(),
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[&overlay](const RuntimeRenderState& state)
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{
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return MatchesOscControlKey(state.layerId, overlay.layerKey) ||
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MatchesOscControlKey(state.shaderId, overlay.layerKey) ||
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MatchesOscControlKey(state.shaderName, overlay.layerKey);
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});
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if (stateIt == states.end())
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return false;
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definitionIt = std::find_if(stateIt->parameterDefinitions.begin(), stateIt->parameterDefinitions.end(),
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[&overlay](const ShaderParameterDefinition& definition)
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{
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return MatchesOscControlKey(definition.id, overlay.parameterKey) ||
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MatchesOscControlKey(definition.label, overlay.parameterKey);
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});
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return definitionIt != stateIt->parameterDefinitions.end();
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}
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std::size_t RuntimeLiveState::OverlayCount() const
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{
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return mOscOverlayStates.size();
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}
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void RuntimeLiveState::ApplyOscUpdates(const std::vector<RuntimeLiveOscUpdate>& updates)
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{
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const auto now = std::chrono::steady_clock::now();
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for (const RuntimeLiveOscUpdate& update : updates)
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{
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auto overlayIt = mOscOverlayStates.find(update.routeKey);
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if (overlayIt == mOscOverlayStates.end())
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{
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OscOverlayState overlay;
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overlay.layerKey = update.layerKey;
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overlay.parameterKey = update.parameterKey;
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overlay.targetValue = update.targetValue;
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overlay.lastUpdatedTime = now;
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overlay.lastAppliedTime = now;
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overlay.generation = 1;
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mOscOverlayStates[update.routeKey] = std::move(overlay);
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}
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else
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{
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overlayIt->second.targetValue = update.targetValue;
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overlayIt->second.lastUpdatedTime = now;
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overlayIt->second.generation += 1;
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overlayIt->second.commitQueued = false;
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}
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}
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}
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void RuntimeLiveState::ApplyOscCommitCompletions(const std::vector<RuntimeLiveOscCommitCompletion>& completedCommits)
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{
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for (const RuntimeLiveOscCommitCompletion& completedCommit : completedCommits)
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{
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auto overlayIt = mOscOverlayStates.find(completedCommit.routeKey);
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if (overlayIt == mOscOverlayStates.end())
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continue;
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OscOverlayState& overlay = overlayIt->second;
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if (overlay.commitQueued &&
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overlay.pendingCommitGeneration == completedCommit.generation &&
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overlay.generation == completedCommit.generation)
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{
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mOscOverlayStates.erase(overlayIt);
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}
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}
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}
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void RuntimeLiveState::PruneIncompatibleOverlays(const std::vector<RuntimeRenderState>& states)
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{
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for (auto it = mOscOverlayStates.begin(); it != mOscOverlayStates.end();)
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{
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std::vector<RuntimeRenderState>::const_iterator stateIt;
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std::vector<ShaderParameterDefinition>::const_iterator definitionIt;
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if (TryResolveOverlayTarget(it->second, states, stateIt, definitionIt))
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{
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ShaderParameterValue targetValue;
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std::string normalizeError;
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if (NormalizeAndValidateParameterValue(*definitionIt, it->second.targetValue, targetValue, normalizeError))
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{
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++it;
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continue;
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}
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}
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it = mOscOverlayStates.erase(it);
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}
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}
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void RuntimeLiveState::ApplyToLayerStates(
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std::vector<RuntimeRenderState>& states,
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const RuntimeLiveStateApplyOptions& options,
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std::vector<RuntimeLiveOscCommitRequest>* commitRequests)
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{
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if (states.empty() || mOscOverlayStates.empty())
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return;
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PruneIncompatibleOverlays(states);
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if (mOscOverlayStates.empty())
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return;
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const auto now = options.now;
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const double clampedSmoothing = ClampOscAlpha(options.smoothing);
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std::vector<std::string> overlayKeysToRemove;
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for (auto& item : mOscOverlayStates)
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{
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const std::string& routeKey = item.first;
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OscOverlayState& overlay = item.second;
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auto stateIt = std::find_if(states.begin(), states.end(),
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[&overlay](const RuntimeRenderState& state)
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{
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return MatchesOscControlKey(state.layerId, overlay.layerKey) ||
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MatchesOscControlKey(state.shaderId, overlay.layerKey) ||
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MatchesOscControlKey(state.shaderName, overlay.layerKey);
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});
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if (stateIt == states.end())
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continue;
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auto definitionIt = std::find_if(stateIt->parameterDefinitions.begin(), stateIt->parameterDefinitions.end(),
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[&overlay](const ShaderParameterDefinition& definition)
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{
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return MatchesOscControlKey(definition.id, overlay.parameterKey) ||
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MatchesOscControlKey(definition.label, overlay.parameterKey);
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});
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if (definitionIt == stateIt->parameterDefinitions.end())
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continue;
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ShaderParameterValue targetValue;
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std::string normalizeError;
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if (!NormalizeAndValidateParameterValue(*definitionIt, overlay.targetValue, targetValue, normalizeError))
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continue;
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if (definitionIt->type == ShaderParameterType::Trigger)
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{
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ShaderParameterValue& value = stateIt->parameterValues[definitionIt->id];
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const double previousCount = value.numberValues.empty() ? 0.0 : value.numberValues[0];
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const double triggerTime = stateIt->timeSeconds;
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value.numberValues = { previousCount + 1.0, triggerTime };
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overlayKeysToRemove.push_back(routeKey);
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continue;
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}
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const bool smoothable =
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clampedSmoothing > 0.0 &&
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(definitionIt->type == ShaderParameterType::Float ||
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definitionIt->type == ShaderParameterType::Vec2 ||
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definitionIt->type == ShaderParameterType::Color);
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if (!smoothable)
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{
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overlay.currentValue = targetValue;
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overlay.hasCurrentValue = true;
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stateIt->parameterValues[definitionIt->id] = overlay.currentValue;
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if (options.allowCommit &&
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!overlay.commitQueued &&
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now - overlay.lastUpdatedTime >= options.commitDelay &&
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commitRequests)
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{
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commitRequests->push_back({ routeKey, overlay.layerKey, overlay.parameterKey, overlay.targetValue, overlay.generation });
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overlay.pendingCommitGeneration = overlay.generation;
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overlay.commitQueued = true;
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}
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continue;
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}
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if (!overlay.hasCurrentValue)
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{
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overlay.currentValue = DefaultValueForDefinition(*definitionIt);
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auto currentIt = stateIt->parameterValues.find(definitionIt->id);
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if (currentIt != stateIt->parameterValues.end())
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overlay.currentValue = currentIt->second;
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overlay.hasCurrentValue = true;
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}
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if (overlay.currentValue.numberValues.size() != targetValue.numberValues.size())
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overlay.currentValue.numberValues = targetValue.numberValues;
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double smoothingAlpha = clampedSmoothing;
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if (overlay.lastAppliedTime != std::chrono::steady_clock::time_point())
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{
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const double deltaSeconds =
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std::chrono::duration_cast<std::chrono::duration<double>>(now - overlay.lastAppliedTime).count();
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smoothingAlpha = ComputeTimeBasedOscAlpha(clampedSmoothing, deltaSeconds);
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}
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overlay.lastAppliedTime = now;
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ShaderParameterValue nextValue = targetValue;
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bool converged = true;
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for (std::size_t index = 0; index < targetValue.numberValues.size(); ++index)
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{
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const double currentNumber = overlay.currentValue.numberValues[index];
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const double targetNumber = targetValue.numberValues[index];
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const double delta = targetNumber - currentNumber;
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double nextNumber = currentNumber + delta * smoothingAlpha;
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if (std::fabs(delta) <= 0.0005)
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nextNumber = targetNumber;
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else
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converged = false;
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nextValue.numberValues[index] = nextNumber;
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}
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if (converged)
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nextValue.numberValues = targetValue.numberValues;
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overlay.currentValue = nextValue;
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overlay.hasCurrentValue = true;
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stateIt->parameterValues[definitionIt->id] = overlay.currentValue;
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if (options.allowCommit &&
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converged &&
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!overlay.commitQueued &&
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now - overlay.lastUpdatedTime >= options.commitDelay &&
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commitRequests)
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{
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commitRequests->push_back({ routeKey, overlay.layerKey, overlay.parameterKey, BuildOscCommitValue(*definitionIt, overlay.currentValue), overlay.generation });
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overlay.pendingCommitGeneration = overlay.generation;
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overlay.commitQueued = true;
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}
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}
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for (const std::string& overlayKey : overlayKeysToRemove)
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mOscOverlayStates.erase(overlayKey);
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}
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