Feature: Temporal Color Smoothing with variable decay-rate for long period average windows (#1043)
* Feature: Weighted Moving Average Smoothing with Decay * fix assign * try fix MSVC error related to always inline on static * use proper imports for windows * crossplatform inline declaration
This commit is contained in:
The-Master777
GitHub
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83455441fa
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0dd8e45364
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@ -282,6 +282,7 @@
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"edt_conf_enum_hsv": "HSV",
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"edt_conf_enum_left_right": "Left to right",
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"edt_conf_enum_linear": "Linear",
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"edt_conf_enum_decay": "Decay",
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"edt_conf_enum_logdebug": "Debug",
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"edt_conf_enum_logsilent": "Silent",
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"edt_conf_enum_logverbose": "Verbose",
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@ -375,6 +376,14 @@
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"edt_conf_smooth_type_title": "Type",
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"edt_conf_smooth_updateDelay_expl": "Delay the output in case your ambient light is faster than your TV.",
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"edt_conf_smooth_updateDelay_title": "Update delay",
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"edt_conf_smooth_interpolationRate_expl": "Speed of the calculation of smooth intermediate frames.",
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"edt_conf_smooth_interpolationRate_title": "Interpolation Rate",
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"edt_conf_smooth_outputRate_title": "Output Rate",
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"edt_conf_smooth_outputRate_expl": "The output speed to your led controller.",
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"edt_conf_smooth_decay_title": "Decay-Power",
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"edt_conf_smooth_decay_expl": "The speed of decay. 1 is linear, greater values are have stronger effect.",
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"edt_conf_smooth_dithering_title": "Dithering",
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"edt_conf_smooth_dithering_expl": "Improve color accuracy at high output speeds by alternating between adjacent colors.",
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"edt_conf_smooth_updateFrequency_expl": "The output speed to your led controller.",
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"edt_conf_smooth_updateFrequency_title": "Update frequency",
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"edt_conf_v4l2_blueSignalThreshold_expl": "Darkens low blue values (recognized as black)",
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@ -184,7 +184,7 @@ function initLanguageSelection()
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for (var i = 0; i < availLang.length; i++)
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{
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$("#language-select").append('<option value="'+i+'" selected="">'+availLangText[i]+'</option>');
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}
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}
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var langLocale = storedLang;
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@ -533,7 +533,7 @@ function createJsonEditor(container,schema,setconfig,usePanel,arrayre)
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{
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for(var key in editor.root.editors)
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{
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editor.getEditor("root."+key).setValue( window.serverConfig[key] );
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editor.getEditor("root."+key).setValue(Object.assign({}, editor.getEditor("root."+key).value, window.serverConfig[key] ));
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}
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}
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@ -48,12 +48,16 @@
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"smoothing" :
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{
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"enable" : true,
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"type" : "linear",
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"time_ms" : 200,
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"updateFrequency" : 25.0000,
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"updateDelay" : 0,
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"continuousOutput" : true
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"enable" : true,
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"type" : "linear",
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"time_ms" : 200,
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"updateFrequency" : 25.0000,
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"interpolationRate" : 25.0000,
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"outputRate" : 25.0000,
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"decay" : 1,
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"dithering" : false,
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"updateDelay" : 0,
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"continuousOutput" : true
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},
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"grabberV4L2" :
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@ -6,15 +6,48 @@
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#include <hyperion/Hyperion.h>
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#include <cmath>
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#include <chrono>
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#include <thread>
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/// The number of microseconds per millisecond = 1000.
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const int64_t MS_PER_MICRO = 1000;
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#if defined(COMPILER_GCC)
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#define ALWAYS_INLINE inline __attribute__((__always_inline__))
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#elif defined(COMPILER_MSVC)
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#define ALWAYS_INLINE __forceinline
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#else
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#define ALWAYS_INLINE inline
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#endif
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/// Clamps the rounded values to the byte-interval of [0, 255].
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ALWAYS_INLINE long clampRounded(const floatT x) {
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return std::min(255l, std::max(0l, std::lroundf(x)));
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}
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/// The number of bits that are used for shifting the fixed point values
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const int FPShift = (sizeof(uint64_t)*8 - (12 + 9));
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/// The number of bits that are reduce the shifting when converting from fixed to floating point. 8 bits = 256 values
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const int SmallShiftBis = sizeof(uint8_t)*8;
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/// The number of bits that are used for shifting the fixed point values plus SmallShiftBis
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const int FPShiftSmall = (sizeof(uint64_t)*8 - (12 + 9 + SmallShiftBis));
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const char* SETTINGS_KEY_SMOOTHING_TYPE = "type";
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const char* SETTINGS_KEY_INTERPOLATION_RATE = "interpolationRate";
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const char* SETTINGS_KEY_OUTPUT_RATE = "outputRate";
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const char* SETTINGS_KEY_DITHERING = "dithering";
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const char* SETTINGS_KEY_DECAY = "decay";
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using namespace hyperion;
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const int64_t DEFAUL_SETTLINGTIME = 200; // settlingtime in ms
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const double DEFAUL_UPDATEFREQUENCY = 25; // updatefrequncy in hz
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const int64_t DEFAUL_UPDATEINTERVALL = static_cast<int64_t>(1000 / DEFAUL_UPDATEFREQUENCY); // updateintervall in ms
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const unsigned DEFAUL_OUTPUTDEPLAY = 0; // outputdelay in ms
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const int64_t DEFAUL_SETTLINGTIME = 200; // settlingtime in ms
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const double DEFAUL_UPDATEFREQUENCY = 25; // updatefrequncy in hz
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const int64_t DEFAUL_UPDATEINTERVALL = static_cast<int64_t>(1000 / DEFAUL_UPDATEFREQUENCY); // updateintervall in ms
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const unsigned DEFAUL_OUTPUTDEPLAY = 0; // outputdelay in ms
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LinearColorSmoothing::LinearColorSmoothing(const QJsonDocument& config, Hyperion* hyperion)
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LinearColorSmoothing::LinearColorSmoothing(const QJsonDocument &config, Hyperion *hyperion)
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: QObject(hyperion)
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, _log(Logger::getInstance("SMOOTHING"))
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, _hyperion(hyperion)
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@ -22,11 +55,13 @@ LinearColorSmoothing::LinearColorSmoothing(const QJsonDocument& config, Hyperion
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, _settlingTime(DEFAUL_SETTLINGTIME)
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, _timer(new QTimer(this))
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, _outputDelay(DEFAUL_OUTPUTDEPLAY)
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, _smoothingType(SmoothingType::Linear)
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, _writeToLedsEnable(false)
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, _continuousOutput(false)
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, _pause(false)
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, _currentConfigId(0)
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, _enabled(false)
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, tempValues(std::vector<uint64_t>(0, 0l))
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{
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// init cfg 0 (default)
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addConfig(DEFAUL_SETTLINGTIME, DEFAUL_UPDATEFREQUENCY, DEFAUL_OUTPUTDEPLAY);
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@ -34,38 +69,54 @@ LinearColorSmoothing::LinearColorSmoothing(const QJsonDocument& config, Hyperion
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selectConfig(0, true);
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// add pause on cfg 1
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SMOOTHING_CFG cfg = {true, 0, 0, 0};
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SMOOTHING_CFG cfg = {SmoothingType::Linear, 0, 0, 0, 0, 0, false};
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_cfgList.append(cfg);
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// listen for comp changes
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connect(_hyperion, &Hyperion::compStateChangeRequest, this, &LinearColorSmoothing::componentStateChange);
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// timer
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connect(_timer, &QTimer::timeout, this, &LinearColorSmoothing::updateLeds);
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Info(_log, "LinearColorSmoothing sizeof floatT == %d", (sizeof(floatT)));
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}
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void LinearColorSmoothing::handleSettingsUpdate(settings::type type, const QJsonDocument& config)
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void LinearColorSmoothing::handleSettingsUpdate(settings::type type, const QJsonDocument &config)
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{
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if(type == settings::SMOOTHING)
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if (type == settings::SMOOTHING)
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{
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// std::cout << "LinearColorSmoothing::handleSettingsUpdate" << std::endl;
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// std::cout << config.toJson().toStdString() << std::endl;
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QJsonObject obj = config.object();
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if(enabled() != obj["enable"].toBool(true))
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if (enabled() != obj["enable"].toBool(true))
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setEnable(obj["enable"].toBool(true));
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_continuousOutput = obj["continuousOutput"].toBool(true);
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SMOOTHING_CFG cfg = {false,
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static_cast<int64_t>(obj["time_ms"].toInt(DEFAUL_SETTLINGTIME)),
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static_cast<int64_t>(1000.0/obj["updateFrequency"].toDouble(DEFAUL_UPDATEFREQUENCY)),
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static_cast<unsigned>(obj["updateDelay"].toInt(DEFAUL_OUTPUTDEPLAY))
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};
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SMOOTHING_CFG cfg = {SmoothingType::Linear,true, 0, 0, 0, 0, 0, false, 1};
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const QString typeString = obj[SETTINGS_KEY_SMOOTHING_TYPE].toString();
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if(typeString == "linear") {
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cfg.smoothingType = SmoothingType::Linear;
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} else if(typeString == "decay") {
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cfg.smoothingType = SmoothingType::Decay;
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}
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cfg.pause = false;
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cfg.settlingTime = static_cast<int64_t>(obj["time_ms"].toInt(DEFAUL_SETTLINGTIME));
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cfg.updateInterval = static_cast<int64_t>(1000.0 / obj["updateFrequency"].toDouble(DEFAUL_UPDATEFREQUENCY));
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cfg.outputRate = obj[SETTINGS_KEY_OUTPUT_RATE].toDouble(DEFAUL_UPDATEFREQUENCY);
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cfg.interpolationRate = obj[SETTINGS_KEY_INTERPOLATION_RATE].toDouble(DEFAUL_UPDATEFREQUENCY);
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cfg.outputDelay = static_cast<unsigned>(obj["updateDelay"].toInt(DEFAUL_OUTPUTDEPLAY));
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cfg.dithering = obj[SETTINGS_KEY_DITHERING].toBool(false);
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cfg.decay = obj[SETTINGS_KEY_DECAY].toDouble(1.0);
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//Debug( _log, "smoothing cfg_id %d: pause: %d bool, settlingTime: %d ms, interval: %d ms (%u Hz), updateDelay: %u frames", _currentConfigId, cfg.pause, cfg.settlingTime, cfg.updateInterval, unsigned(1000.0/cfg.updateInterval), cfg.outputDelay );
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_cfgList[0] = cfg;
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// if current id is 0, we need to apply the settings (forced)
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if( _currentConfigId == 0)
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if (_currentConfigId == 0)
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{
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//Debug( _log, "_currentConfigId == 0");
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selectConfig(0, true);
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@ -79,15 +130,18 @@ void LinearColorSmoothing::handleSettingsUpdate(settings::type type, const QJson
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int LinearColorSmoothing::write(const std::vector<ColorRgb> &ledValues)
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{
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_targetTime = QDateTime::currentMSecsSinceEpoch() + _settlingTime;
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_targetTime = micros() + (MS_PER_MICRO * _settlingTime);
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_targetValues = ledValues;
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rememberFrame(ledValues);
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// received a new target color
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if (_previousValues.empty())
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{
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// not initialized yet
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_previousTime = QDateTime::currentMSecsSinceEpoch();
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_previousWriteTime = micros();
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_previousValues = ledValues;
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_previousInterpolationTime = micros();
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//Debug( _log, "Start Smoothing timer: settlingTime: %d ms, interval: %d ms (%u Hz), updateDelay: %u frames", _settlingTime, _updateInterval, unsigned(1000.0/_updateInterval), _outputDelay );
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QMetaObject::invokeMethod(_timer, "start", Qt::QueuedConnection, Q_ARG(int, _updateInterval));
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@ -96,7 +150,7 @@ int LinearColorSmoothing::write(const std::vector<ColorRgb> &ledValues)
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return 0;
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}
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int LinearColorSmoothing::updateLedValues(const std::vector<ColorRgb>& ledValues)
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int LinearColorSmoothing::updateLedValues(const std::vector<ColorRgb> &ledValues)
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{
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int retval = 0;
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if (!_enabled)
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@ -110,75 +164,366 @@ int LinearColorSmoothing::updateLedValues(const std::vector<ColorRgb>& ledValues
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return retval;
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}
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void LinearColorSmoothing::updateLeds()
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void LinearColorSmoothing::intitializeComponentVectors(const size_t ledCount)
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{
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int64_t now = QDateTime::currentMSecsSinceEpoch();
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int64_t deltaTime = _targetTime - now;
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//Debug(_log, "elapsed Time [%d], _targetTime [%d] - now [%d], deltaTime [%d]", now -_previousTime, _targetTime, now, deltaTime);
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if (deltaTime < 0)
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// (Re-)Initialize the color-vectors that store the Mean-Value
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if (_ledCount != ledCount)
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{
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_previousValues = _targetValues;
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_previousTime = now;
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_ledCount = ledCount;
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queueColors(_previousValues);
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_writeToLedsEnable = _continuousOutput;
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const size_t len = 3 * ledCount;
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meanValues = std::vector<floatT>(len, 0.0f);
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residualErrors = std::vector<floatT>(len, 0.0f);
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tempValues = std::vector<uint64_t>(len, 0l);
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}
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else
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// Zero the temp vector
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std::fill(tempValues.begin(), tempValues.end(), 0l);
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}
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void LinearColorSmoothing::writeDirect()
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{
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const int64_t now = micros();
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_previousValues = _targetValues;
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_previousWriteTime = now;
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queueColors(_previousValues);
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_writeToLedsEnable = _continuousOutput;
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}
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void LinearColorSmoothing::writeFrame()
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{
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const int64_t now = micros();
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_previousWriteTime = now;
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queueColors(_previousValues);
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_writeToLedsEnable = _continuousOutput;
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}
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ALWAYS_INLINE int64_t LinearColorSmoothing::micros() const
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{
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const auto now = std::chrono::high_resolution_clock::now();
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return (std::chrono::duration_cast<std::chrono::microseconds>(now.time_since_epoch())).count();
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}
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void LinearColorSmoothing::assembleAndDitherFrame()
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{
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if (meanValues.empty())
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{
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_writeToLedsEnable = true;
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return;
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}
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//std::cout << "LinearColorSmoothing::updateLeds> _previousValues: "; LedDevice::printLedValues ( _previousValues );
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// The number of leds present in each frame
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const size_t N = _targetValues.size();
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float k = 1.0f - 1.0f * deltaTime / (_targetTime - _previousTime);
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for (size_t i = 0; i < N; ++i)
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{
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// Add residuals for error diffusion (temporal dithering)
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const floatT fr = meanValues[3 * i + 0] + residualErrors[3 * i + 0];
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const floatT fg = meanValues[3 * i + 1] + residualErrors[3 * i + 1];
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const floatT fb = meanValues[3 * i + 2] + residualErrors[3 * i + 2];
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int reddif = 0, greendif = 0, bluedif = 0;
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// Convert to to 8-bit value
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const long ir = clampRounded(fr);
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const long ig = clampRounded(fg);
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const long ib = clampRounded(fb);
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for (size_t i = 0; i < _previousValues.size(); ++i)
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{
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ColorRgb & prev = _previousValues[i];
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ColorRgb & target = _targetValues[i];
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// Update the colors
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ColorRgb &prev = _previousValues[i];
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prev.red = (uint8_t)ir;
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prev.green = (uint8_t)ig;
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prev.blue = (uint8_t)ib;
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reddif = target.red - prev.red;
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greendif = target.green - prev.green;
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bluedif = target.blue - prev.blue;
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prev.red += (reddif < 0 ? -1:1) * std::ceil(k * std::abs(reddif));
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prev.green += (greendif < 0 ? -1:1) * std::ceil(k * std::abs(greendif));
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prev.blue += (bluedif < 0 ? -1:1) * std::ceil(k * std::abs(bluedif));
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}
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_previousTime = now;
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//std::cout << "LinearColorSmoothing::updateLeds> _targetValues: "; LedDevice::printLedValues ( _targetValues );
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queueColors(_previousValues);
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// Determine the component errors
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residualErrors[3 * i + 0] = fr - ir;
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residualErrors[3 * i + 1] = fg - ig;
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residualErrors[3 * i + 2] = fb - ib;
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}
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}
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void LinearColorSmoothing::queueColors(const std::vector<ColorRgb> & ledColors)
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void LinearColorSmoothing::assembleFrame()
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{
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if (meanValues.empty())
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{
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return;
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}
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// The number of leds present in each frame
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const size_t N = _targetValues.size();
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for (size_t i = 0; i < N; ++i)
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{
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// Convert to to 8-bit value
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const long ir = clampRounded(meanValues[3 * i + 0]);
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const long ig = clampRounded(meanValues[3 * i + 1]);
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const long ib = clampRounded(meanValues[3 * i + 2]);
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// Update the colors
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ColorRgb &prev = _previousValues[i];
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prev.red = (uint8_t)ir;
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prev.green = (uint8_t)ig;
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prev.blue = (uint8_t)ib;
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}
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}
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ALWAYS_INLINE void LinearColorSmoothing::aggregateComponents(const std::vector<ColorRgb>& colors, std::vector<uint64_t>& weighted, const floatT weight) {
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// Determine the integer-scale by converting the weight to fixed point
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const uint64_t scale = (1l<<FPShift) * static_cast<double>(weight);
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const size_t N = colors.size();
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for (size_t i = 0; i < N; ++i)
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{
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const ColorRgb &color = colors[i];
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// Scale the colors
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const uint64_t red = scale * color.red;
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const uint64_t green = scale * color.green;
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const uint64_t blue = scale * color.blue;
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// Accumulate in the vector
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weighted[3 * i + 0] += red;
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weighted[3 * i + 1] += green;
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weighted[3 * i + 2] += blue;
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}
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}
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void LinearColorSmoothing::interpolateFrame()
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{
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const int64_t now = micros();
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// The number of leds present in each frame
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const size_t N = _targetValues.size();
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intitializeComponentVectors(N);
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/// Time where the frame has been shown
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int64_t frameStart;
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/// Time where the frame display would have ended
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int64_t frameEnd = now;
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/// Time where the current window has started
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||||
const int64_t windowStart = now - (MS_PER_MICRO * _settlingTime);
|
||||
|
||||
/// The total weight of the frames that were included in our window; sum of the individual weights
|
||||
floatT fs = 0.0f;
|
||||
|
||||
// To calculate the mean component we iterate over all relevant frames;
|
||||
// from the most recent to the oldest frame that still clips our moving-average window given by time (now)
|
||||
for (auto it = _frameQueue.rbegin(); it != _frameQueue.rend() && frameEnd > windowStart; ++it)
|
||||
{
|
||||
// Starting time of a frame in the window is clipped to the window start
|
||||
frameStart = std::max(windowStart, it->time);
|
||||
|
||||
// Weight the current frame relative to the overall window based on start and end times
|
||||
const floatT weight = _weightFrame(frameStart, frameEnd, windowStart);
|
||||
fs += weight;
|
||||
|
||||
// Aggregate the RGB components of this frame's LED colors using the individual weighting
|
||||
aggregateComponents(it->colors, tempValues, weight);
|
||||
|
||||
// The previous (earlier) frame display has ended when the current frame stared to show,
|
||||
// so we can use this as the frame-end time for next iteration
|
||||
frameEnd = frameStart;
|
||||
}
|
||||
|
||||
/// The inverse scaling factor for the color components, clamped to (0, 1.0]; 1.0 for fs < 1, 1 : fs otherwise
|
||||
const floatT inv_fs = ((fs < 1.0f) ? 1.0f : 1.0f / fs) / (1 << SmallShiftBis);
|
||||
|
||||
// Normalize the mean component values for the window (fs)
|
||||
for (size_t i = 0; i < 3 * N; ++i)
|
||||
{
|
||||
meanValues[i] = (tempValues[i] >> FPShiftSmall) * inv_fs;
|
||||
}
|
||||
|
||||
_previousInterpolationTime = now;
|
||||
}
|
||||
|
||||
void LinearColorSmoothing::performDecay(const int64_t now) {
|
||||
/// The target time when next frame interpolation should be performed
|
||||
const int64_t interpolationTarget = _previousInterpolationTime + _interpolationIntervalMicros;
|
||||
|
||||
/// The target time when next write operation should be performed
|
||||
const int64_t writeTarget = _previousWriteTime + _outputIntervalMicros;
|
||||
|
||||
/// Whether a frame interpolation is pending
|
||||
const bool interpolatePending = now > interpolationTarget;
|
||||
|
||||
/// Whether a write is pending
|
||||
const bool writePending = now > writeTarget;
|
||||
|
||||
// Check whether a new interpolation frame is due
|
||||
if (interpolatePending)
|
||||
{
|
||||
interpolateFrame();
|
||||
++_interpolationCounter;
|
||||
|
||||
// Assemble the frame now when no dithering is applied
|
||||
if(!_dithering) {
|
||||
assembleFrame();
|
||||
}
|
||||
}
|
||||
|
||||
// Check whether to frame output is due
|
||||
if (writePending)
|
||||
{
|
||||
// Dither the frame to diffuse rounding errors
|
||||
if(_dithering) {
|
||||
assembleAndDitherFrame();
|
||||
}
|
||||
|
||||
writeFrame();
|
||||
++_renderedCounter;
|
||||
}
|
||||
|
||||
// Check for sleep when no operation is pending.
|
||||
// As our QTimer is not capable of sub 1ms timing but instead performs spinning -
|
||||
// we have to do µsec-sleep to free CPU time; otherwise the thread would consume 100% CPU time.
|
||||
if(_updateInterval <= 0 && !(interpolatePending || writePending)) {
|
||||
const int64_t nextActionExpected = std::min(interpolationTarget, writeTarget);
|
||||
const int64_t microsTillNextAction = nextActionExpected - now;
|
||||
const int64_t SLEEP_MAX_MICROS = 1000l; // We want to use usleep for up to 1ms
|
||||
const int64_t SLEEP_RES_MICROS = 100l; // Expected resolution is >= 100µs on stock linux
|
||||
|
||||
if(microsTillNextAction > SLEEP_RES_MICROS) {
|
||||
const int64_t wait = std::min(microsTillNextAction - SLEEP_RES_MICROS, SLEEP_MAX_MICROS);
|
||||
//usleep(wait);
|
||||
std::this_thread::sleep_for(std::chrono::microseconds(wait));
|
||||
}
|
||||
}
|
||||
|
||||
// Write stats every 30 sec
|
||||
if ((now > (_renderedStatTime + 30 * 1000000)) && (_renderedCounter > _renderedStatCounter))
|
||||
{
|
||||
Info(_log, "decay - rendered frames [%d] (%f/s), interpolated frames [%d] (%f/s) in [%f ms]"
|
||||
, _renderedCounter - _renderedStatCounter
|
||||
, (1.0f * (_renderedCounter - _renderedStatCounter) / ((now - _renderedStatTime) / 1000000.0f))
|
||||
, _interpolationCounter - _interpolationStatCounter
|
||||
, (1.0f * (_interpolationCounter - _interpolationStatCounter) / ((now - _renderedStatTime) / 1000000.0f))
|
||||
, (now - _renderedStatTime) / 1000.0f
|
||||
);
|
||||
_renderedStatTime = now;
|
||||
_renderedStatCounter = _renderedCounter;
|
||||
_interpolationStatCounter = _interpolationCounter;
|
||||
}
|
||||
}
|
||||
|
||||
void LinearColorSmoothing::performLinear(const int64_t now) {
|
||||
const int64_t deltaTime = _targetTime - now;
|
||||
const float k = 1.0f - 1.0f * deltaTime / (_targetTime - _previousWriteTime);
|
||||
const size_t N = _previousValues.size();
|
||||
|
||||
for (size_t i = 0; i < N; ++i)
|
||||
{
|
||||
const ColorRgb &target = _targetValues[i];
|
||||
ColorRgb &prev = _previousValues[i];
|
||||
|
||||
const int reddif = target.red - prev.red;
|
||||
const int greendif = target.green - prev.green;
|
||||
const int bluedif = target.blue - prev.blue;
|
||||
|
||||
prev.red += (reddif < 0 ? -1:1) * std::ceil(k * std::abs(reddif));
|
||||
prev.green += (greendif < 0 ? -1:1) * std::ceil(k * std::abs(greendif));
|
||||
prev.blue += (bluedif < 0 ? -1:1) * std::ceil(k * std::abs(bluedif));
|
||||
}
|
||||
|
||||
writeFrame();
|
||||
}
|
||||
|
||||
void LinearColorSmoothing::updateLeds()
|
||||
{
|
||||
const int64_t now = micros();
|
||||
const int64_t deltaTime = _targetTime - now;
|
||||
|
||||
//Debug(_log, "elapsed Time [%d], _targetTime [%d] - now [%d], deltaTime [%d]", now -_previousWriteTime, _targetTime, now, deltaTime);
|
||||
if (deltaTime < 0)
|
||||
{
|
||||
writeDirect();
|
||||
return;
|
||||
}
|
||||
|
||||
switch (_smoothingType)
|
||||
{
|
||||
case Decay:
|
||||
performDecay(now);
|
||||
break;
|
||||
|
||||
case Linear:
|
||||
// Linear interpolation is default
|
||||
default:
|
||||
performLinear(now);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void LinearColorSmoothing::rememberFrame(const std::vector<ColorRgb> &ledColors)
|
||||
{
|
||||
//Info(_log, "rememberFrame - before _frameQueue.size() [%d]", _frameQueue.size());
|
||||
|
||||
const int64_t now = micros();
|
||||
|
||||
// Maintain the queue by removing outdated frames
|
||||
const int64_t windowStart = now - (MS_PER_MICRO * _settlingTime);
|
||||
|
||||
int p = -1; // Start with -1 instead of 0, so we keep the last frame at least partially clipping the window
|
||||
|
||||
// As the frames are ordered chronologically we scan from the front (oldest) till we find the first fresh frame
|
||||
for (auto it = _frameQueue.begin(); it != _frameQueue.end() && it->time < windowStart; ++it)
|
||||
{
|
||||
++p;
|
||||
}
|
||||
|
||||
if (p > 0)
|
||||
{
|
||||
//Info(_log, "rememberFrame - erasing %d frames", p);
|
||||
_frameQueue.erase(_frameQueue.begin(), _frameQueue.begin() + p);
|
||||
}
|
||||
|
||||
// Append the latest frame at back of the queue
|
||||
const REMEMBERED_FRAME frame = REMEMBERED_FRAME(now, ledColors);
|
||||
_frameQueue.push_back(frame);
|
||||
|
||||
//Info(_log, "rememberFrame - after _frameQueue.size() [%d]", _frameQueue.size());
|
||||
}
|
||||
|
||||
|
||||
void LinearColorSmoothing::clearRememberedFrames()
|
||||
{
|
||||
_frameQueue.clear();
|
||||
|
||||
_ledCount = 0;
|
||||
meanValues.clear();
|
||||
residualErrors.clear();
|
||||
tempValues.clear();
|
||||
}
|
||||
|
||||
void LinearColorSmoothing::queueColors(const std::vector<ColorRgb> &ledColors)
|
||||
{
|
||||
//Debug(_log, "queueColors - _outputDelay[%d] _outputQueue.size() [%d], _writeToLedsEnable[%d]", _outputDelay, _outputQueue.size(), _writeToLedsEnable);
|
||||
if (_outputDelay == 0)
|
||||
{
|
||||
// No output delay => immediate write
|
||||
if ( _writeToLedsEnable && !_pause)
|
||||
if (_writeToLedsEnable && !_pause)
|
||||
{
|
||||
// if ( ledColors.size() == 0 )
|
||||
// qFatal ("No LedValues! - in LinearColorSmoothing::queueColors() - _outputDelay == 0");
|
||||
// else
|
||||
// if ( ledColors.size() == 0 )
|
||||
// qFatal ("No LedValues! - in LinearColorSmoothing::queueColors() - _outputDelay == 0");
|
||||
// else
|
||||
emit _hyperion->ledDeviceData(ledColors);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Push new colors in the delay-buffer
|
||||
if ( _writeToLedsEnable )
|
||||
if (_writeToLedsEnable)
|
||||
_outputQueue.push_back(ledColors);
|
||||
|
||||
// If the delay-buffer is filled pop the front and write to device
|
||||
if (_outputQueue.size() > 0 )
|
||||
if (_outputQueue.size() > 0)
|
||||
{
|
||||
if ( _outputQueue.size() > _outputDelay || !_writeToLedsEnable )
|
||||
if (_outputQueue.size() > _outputDelay || !_writeToLedsEnable)
|
||||
{
|
||||
if (!_pause)
|
||||
{
|
||||
|
|
@ -196,17 +541,19 @@ void LinearColorSmoothing::clearQueuedColors()
|
|||
_previousValues.clear();
|
||||
|
||||
_targetValues.clear();
|
||||
|
||||
clearRememberedFrames();
|
||||
}
|
||||
|
||||
void LinearColorSmoothing::componentStateChange(hyperion::Components component, bool state)
|
||||
{
|
||||
_writeToLedsEnable = state;
|
||||
if(component == hyperion::COMP_LEDDEVICE)
|
||||
if (component == hyperion::COMP_LEDDEVICE)
|
||||
{
|
||||
clearQueuedColors();
|
||||
}
|
||||
|
||||
if(component == hyperion::COMP_SMOOTHING)
|
||||
if (component == hyperion::COMP_SMOOTHING)
|
||||
{
|
||||
setEnable(state);
|
||||
}
|
||||
|
|
@ -230,7 +577,17 @@ void LinearColorSmoothing::setPause(bool pause)
|
|||
|
||||
unsigned LinearColorSmoothing::addConfig(int settlingTime_ms, double ledUpdateFrequency_hz, unsigned updateDelay)
|
||||
{
|
||||
SMOOTHING_CFG cfg = {false, settlingTime_ms, int64_t(1000.0/ledUpdateFrequency_hz), updateDelay};
|
||||
SMOOTHING_CFG cfg = {
|
||||
SmoothingType::Linear,
|
||||
false,
|
||||
settlingTime_ms,
|
||||
int64_t(1000.0 / ledUpdateFrequency_hz),
|
||||
ledUpdateFrequency_hz,
|
||||
ledUpdateFrequency_hz,
|
||||
updateDelay,
|
||||
false,
|
||||
1
|
||||
};
|
||||
_cfgList.append(cfg);
|
||||
|
||||
//Debug( _log, "smoothing cfg %d: pause: %d bool, settlingTime: %d ms, interval: %d ms (%u Hz), updateDelay: %u frames", _cfgList.count()-1, cfg.pause, cfg.settlingTime, cfg.updateInterval, unsigned(1000.0/cfg.updateInterval), cfg.outputDelay );
|
||||
|
|
@ -240,17 +597,26 @@ unsigned LinearColorSmoothing::addConfig(int settlingTime_ms, double ledUpdateFr
|
|||
unsigned LinearColorSmoothing::updateConfig(unsigned cfgID, int settlingTime_ms, double ledUpdateFrequency_hz, unsigned updateDelay)
|
||||
{
|
||||
unsigned updatedCfgID = cfgID;
|
||||
if ( cfgID < static_cast<unsigned>(_cfgList.count()) )
|
||||
if (cfgID < static_cast<unsigned>(_cfgList.count()))
|
||||
{
|
||||
SMOOTHING_CFG cfg = {false, settlingTime_ms, int64_t(1000.0/ledUpdateFrequency_hz), updateDelay};
|
||||
SMOOTHING_CFG cfg = {
|
||||
SmoothingType::Linear,
|
||||
false,
|
||||
settlingTime_ms,
|
||||
int64_t(1000.0 / ledUpdateFrequency_hz),
|
||||
ledUpdateFrequency_hz,
|
||||
ledUpdateFrequency_hz,
|
||||
updateDelay,
|
||||
false,
|
||||
1};
|
||||
_cfgList[updatedCfgID] = cfg;
|
||||
}
|
||||
else
|
||||
{
|
||||
updatedCfgID = addConfig ( settlingTime_ms, ledUpdateFrequency_hz, updateDelay);
|
||||
updatedCfgID = addConfig(settlingTime_ms, ledUpdateFrequency_hz, updateDelay);
|
||||
}
|
||||
// Debug( _log, "smoothing updatedCfgID %u: settlingTime: %d ms, "
|
||||
// "interval: %d ms (%u Hz), updateDelay: %u frames", cfgID, _settlingTime, int64_t(1000.0/ledUpdateFrequency_hz), unsigned(ledUpdateFrequency_hz), updateDelay );
|
||||
// Debug( _log, "smoothing updatedCfgID %u: settlingTime: %d ms, "
|
||||
// "interval: %d ms (%u Hz), updateDelay: %u frames", cfgID, _settlingTime, int64_t(1000.0/ledUpdateFrequency_hz), unsigned(ledUpdateFrequency_hz), updateDelay );
|
||||
return updatedCfgID;
|
||||
}
|
||||
|
||||
|
|
@ -264,18 +630,54 @@ bool LinearColorSmoothing::selectConfig(unsigned cfg, bool force)
|
|||
}
|
||||
|
||||
//Debug( _log, "selectConfig FORCED - _currentConfigId [%u], force [%d]", cfg, force);
|
||||
if ( cfg < (unsigned)_cfgList.count())
|
||||
if (cfg < (unsigned)_cfgList.count())
|
||||
{
|
||||
_settlingTime = _cfgList[cfg].settlingTime;
|
||||
_outputDelay = _cfgList[cfg].outputDelay;
|
||||
_pause = _cfgList[cfg].pause;
|
||||
_smoothingType = _cfgList[cfg].smoothingType;
|
||||
_settlingTime = _cfgList[cfg].settlingTime;
|
||||
_outputDelay = _cfgList[cfg].outputDelay;
|
||||
_pause = _cfgList[cfg].pause;
|
||||
_outputRate = _cfgList[cfg].outputRate;
|
||||
_outputIntervalMicros = int64_t(1000000.0 / _outputRate); // 1s = 1e6 µs
|
||||
_interpolationRate = _cfgList[cfg].interpolationRate;
|
||||
_interpolationIntervalMicros = int64_t(1000000.0 / _interpolationRate);
|
||||
_dithering = _cfgList[cfg].dithering;
|
||||
_decay = _cfgList[cfg].decay;
|
||||
_invWindow = 1.0f / (MS_PER_MICRO * _settlingTime);
|
||||
|
||||
// Set _weightFrame based on the given decay
|
||||
const float decay = _decay;
|
||||
const floatT inv_window = _invWindow;
|
||||
|
||||
// For decay != 1 use power-based approach for calculating the moving average values
|
||||
if(std::abs(decay - 1.0f) > std::numeric_limits<float>::epsilon()) {
|
||||
// Exponential Decay
|
||||
_weightFrame = [inv_window,decay](const int64_t fs, const int64_t fe, const int64_t ws) {
|
||||
const floatT s = (fs - ws) * inv_window;
|
||||
const floatT t = (fe - ws) * inv_window;
|
||||
|
||||
return (decay + 1) * (std::pow(t, decay) - std::pow(s, decay));
|
||||
};
|
||||
} else {
|
||||
// For decay == 1 use linear interpolation of the moving average values
|
||||
// Linear Decay
|
||||
_weightFrame = [inv_window](const int64_t fs, const int64_t fe, const int64_t ws) {
|
||||
// Linear weighting = (end - start) * scale
|
||||
return static_cast<floatT>((fe - fs) * inv_window);
|
||||
};
|
||||
}
|
||||
|
||||
_renderedStatTime = micros();
|
||||
_renderedCounter = 0;
|
||||
_renderedStatCounter = 0;
|
||||
_interpolationCounter = 0;
|
||||
_interpolationStatCounter = 0;
|
||||
|
||||
if (_cfgList[cfg].updateInterval != _updateInterval)
|
||||
{
|
||||
|
||||
QMetaObject::invokeMethod(_timer, "stop", Qt::QueuedConnection);
|
||||
_updateInterval = _cfgList[cfg].updateInterval;
|
||||
if ( this->enabled() && this->_writeToLedsEnable )
|
||||
if (this->enabled() && this->_writeToLedsEnable)
|
||||
{
|
||||
//Debug( _log, "_cfgList[cfg].updateInterval != _updateInterval - Restart timer - _updateInterval [%d]", _updateInterval);
|
||||
QMetaObject::invokeMethod(_timer, "start", Qt::QueuedConnection, Q_ARG(int, _updateInterval));
|
||||
|
|
@ -290,6 +692,9 @@ bool LinearColorSmoothing::selectConfig(unsigned cfg, bool force)
|
|||
// DebugIf( enabled() && !_pause, _log, "set smoothing cfg: %u settlingTime: %d ms, interval: %d ms, updateDelay: %u frames", _currentConfigId, _settlingTime, _updateInterval, _outputDelay );
|
||||
// DebugIf( _pause, _log, "set smoothing cfg: %d, pause", _currentConfigId );
|
||||
|
||||
const float thalf = (1.0-std::pow(1.0/2, 1.0/_decay))*_settlingTime;
|
||||
Info( _log, "%s - Time: %d ms, outputRate %f Hz, interpolationRate: %f Hz, timer: %d ms, Dithering: %d, Decay: %f -> HalfTime: %f ms", _smoothingType == SmoothingType::Decay ? "decay" : "linear", _settlingTime, _outputRate, _interpolationRate, _updateInterval, _dithering ? 1 : 0, _decay, thalf);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
|
||||
// STL includes
|
||||
#include <vector>
|
||||
#include <deque>
|
||||
|
||||
// Qt includes
|
||||
#include <QVector>
|
||||
|
|
@ -13,14 +14,62 @@
|
|||
// settings
|
||||
#include <utils/settings.h>
|
||||
|
||||
// The type of float
|
||||
#define floatT float // Select double, float or __fp16
|
||||
|
||||
class QTimer;
|
||||
class Logger;
|
||||
class Hyperion;
|
||||
|
||||
/// The type of smoothing to perform
|
||||
enum SmoothingType {
|
||||
/// "Linear" smoothing algorithm
|
||||
Linear,
|
||||
|
||||
/// Decay based smoothing algorithm
|
||||
Decay,
|
||||
};
|
||||
|
||||
/// Linear Smooting class
|
||||
///
|
||||
/// This class processes the requested led values and forwards them to the device after applying
|
||||
/// a linear smoothing effect. This class can be handled as a generic LedDevice.
|
||||
/// a smoothing effect to LED colors. This class can be handled as a generic LedDevice.
|
||||
///
|
||||
/// Currently, two types of smoothing are supported:
|
||||
///
|
||||
/// - Linear: A linear smoothing effect that interpolates the previous to the target colors.
|
||||
/// - Decay: A temporal smoothing effect that uses a decay based algorithm that interpolates
|
||||
/// colors based on the age of previous frames and a given decay-power.
|
||||
///
|
||||
/// The smoothing is performed on a history of relevant LED-color frames that are
|
||||
/// incorporated in the smoothing window (given by the configured settling time).
|
||||
///
|
||||
/// For each moment, all ingress frames that were received during the smoothing window
|
||||
/// are reduced to the concrete color values using a weighted moving average. This is
|
||||
/// done by applying a decay-controlled weighting-function to individual the colors of
|
||||
/// each frame.
|
||||
///
|
||||
/// Decay
|
||||
/// =====
|
||||
/// The decay-power influences the weight of individual frames based on their 'age'.
|
||||
///
|
||||
/// * A decay value of 1 indicates linear decay. The colors are given by the moving average
|
||||
/// with a weight that is strictly proportionate to the fraction of time each frame was
|
||||
/// visible during the smoothing window. As a result, equidistant frames will have an
|
||||
/// equal share when calculating an intermediate frame.
|
||||
///
|
||||
/// * A decay value greater than 1 indicates non-linear decay. With higher powers, the
|
||||
/// decay is stronger. I.e. newer frames in the smoothing window will have more influence
|
||||
/// on colors of intermediate frames than older ones.
|
||||
///
|
||||
/// Dithering
|
||||
/// =========
|
||||
/// A temporal dithering algorithm is used to minimize rounding errors, when downsampling
|
||||
/// the average color values to the 8-bit RGB resolution of the LED-device. Effectively,
|
||||
/// this performs diffusion of the residual errors across multiple egress frames.
|
||||
///
|
||||
///
|
||||
|
||||
class LinearColorSmoothing : public QObject
|
||||
{
|
||||
Q_OBJECT
|
||||
|
|
@ -30,14 +79,14 @@ public:
|
|||
/// @param config The configuration document smoothing
|
||||
/// @param hyperion The hyperion parent instance
|
||||
///
|
||||
LinearColorSmoothing(const QJsonDocument& config, Hyperion* hyperion);
|
||||
LinearColorSmoothing(const QJsonDocument &config, Hyperion *hyperion);
|
||||
|
||||
/// LED values as input for the smoothing filter
|
||||
///
|
||||
/// @param ledValues The color-value per led
|
||||
/// @return Zero on success else negative
|
||||
///
|
||||
virtual int updateLedValues(const std::vector<ColorRgb>& ledValues);
|
||||
virtual int updateLedValues(const std::vector<ColorRgb> &ledValues);
|
||||
|
||||
void setEnable(bool enable);
|
||||
void setPause(bool pause);
|
||||
|
|
@ -52,7 +101,7 @@ public:
|
|||
///
|
||||
/// @return The index of the cfg which can be passed to selectConfig()
|
||||
///
|
||||
unsigned addConfig(int settlingTime_ms, double ledUpdateFrequency_hz=25.0, unsigned updateDelay=0);
|
||||
unsigned addConfig(int settlingTime_ms, double ledUpdateFrequency_hz = 25.0, unsigned updateDelay = 0);
|
||||
|
||||
///
|
||||
/// @brief Update a smoothing cfg which can be used with selectConfig()
|
||||
|
|
@ -65,7 +114,7 @@ public:
|
|||
///
|
||||
/// @return The index of the cfg which can be passed to selectConfig()
|
||||
///
|
||||
unsigned updateConfig(unsigned cfgID, int settlingTime_ms, double ledUpdateFrequency_hz=25.0, unsigned updateDelay=0);
|
||||
unsigned updateConfig(unsigned cfgID, int settlingTime_ms, double ledUpdateFrequency_hz = 25.0, unsigned updateDelay = 0);
|
||||
|
||||
///
|
||||
/// @brief select a smoothing cfg given by cfg index from addConfig()
|
||||
|
|
@ -82,7 +131,7 @@ public slots:
|
|||
/// @param type settingyType from enum
|
||||
/// @param config configuration object
|
||||
///
|
||||
void handleSettingsUpdate(settings::type type, const QJsonDocument& config);
|
||||
void handleSettingsUpdate(settings::type type, const QJsonDocument &config);
|
||||
|
||||
private slots:
|
||||
/// Timer callback which writes updated led values to the led device
|
||||
|
|
@ -96,13 +145,12 @@ private slots:
|
|||
void componentStateChange(hyperion::Components component, bool state);
|
||||
|
||||
private:
|
||||
|
||||
/**
|
||||
* Pushes the colors into the output queue and popping the head to the led-device
|
||||
*
|
||||
* @param ledColors The colors to queue
|
||||
*/
|
||||
void queueColors(const std::vector<ColorRgb> & ledColors);
|
||||
void queueColors(const std::vector<ColorRgb> &ledColors);
|
||||
void clearQueuedColors();
|
||||
|
||||
/// write updated values as input for the smoothing filter
|
||||
|
|
@ -113,10 +161,10 @@ private:
|
|||
virtual int write(const std::vector<ColorRgb> &ledValues);
|
||||
|
||||
/// Logger instance
|
||||
Logger* _log;
|
||||
Logger *_log;
|
||||
|
||||
/// Hyperion instance
|
||||
Hyperion* _hyperion;
|
||||
Hyperion *_hyperion;
|
||||
|
||||
/// The interval at which to update the leds (msec)
|
||||
int64_t _updateInterval;
|
||||
|
|
@ -125,7 +173,7 @@ private:
|
|||
int64_t _settlingTime;
|
||||
|
||||
/// The Qt timer object
|
||||
QTimer * _timer;
|
||||
QTimer *_timer;
|
||||
|
||||
/// The timestamp at which the target data should be fully applied
|
||||
int64_t _targetTime;
|
||||
|
|
@ -134,15 +182,45 @@ private:
|
|||
std::vector<ColorRgb> _targetValues;
|
||||
|
||||
/// The timestamp of the previously written led data
|
||||
int64_t _previousTime;
|
||||
int64_t _previousWriteTime;
|
||||
|
||||
/// The timestamp of the previously data interpolation
|
||||
int64_t _previousInterpolationTime;
|
||||
|
||||
/// The previously written led data
|
||||
std::vector<ColorRgb> _previousValues;
|
||||
|
||||
/// The number of updates to keep in the output queue (delayed) before being output
|
||||
unsigned _outputDelay;
|
||||
|
||||
/// The output queue
|
||||
std::list<std::vector<ColorRgb> > _outputQueue;
|
||||
std::deque<std::vector<ColorRgb>> _outputQueue;
|
||||
|
||||
/// A frame of led colors used for temporal smoothing
|
||||
class REMEMBERED_FRAME
|
||||
{
|
||||
public:
|
||||
/// The time this frame was received
|
||||
int64_t time;
|
||||
|
||||
/// The led colors
|
||||
std::vector<ColorRgb> colors;
|
||||
|
||||
REMEMBERED_FRAME ( REMEMBERED_FRAME && ) = default;
|
||||
REMEMBERED_FRAME ( const REMEMBERED_FRAME & ) = default;
|
||||
REMEMBERED_FRAME & operator= ( const REMEMBERED_FRAME & ) = default;
|
||||
|
||||
REMEMBERED_FRAME(const int64_t time, const std::vector<ColorRgb> colors)
|
||||
: time(time)
|
||||
, colors(colors)
|
||||
{}
|
||||
};
|
||||
|
||||
/// The type of smoothing to perform
|
||||
SmoothingType _smoothingType;
|
||||
|
||||
/// The queue of temporarily remembered frames
|
||||
std::deque<REMEMBERED_FRAME> _frameQueue;
|
||||
|
||||
/// Prevent sending data to device when no intput data is sent
|
||||
bool _writeToLedsEnable;
|
||||
|
|
@ -153,17 +231,146 @@ private:
|
|||
/// Flag for pausing
|
||||
bool _pause;
|
||||
|
||||
/// The rate at which color frames should be written to LED device.
|
||||
double _outputRate;
|
||||
|
||||
/// The interval time in microseconds for writing of LED Frames.
|
||||
int64_t _outputIntervalMicros;
|
||||
|
||||
/// The rate at which interpolation of LED frames should be performed.
|
||||
double _interpolationRate;
|
||||
|
||||
/// The interval time in microseconds for interpolation of LED Frames.
|
||||
int64_t _interpolationIntervalMicros;
|
||||
|
||||
/// Whether to apply temproral dithering to diffuse rounding errors when downsampling to 8-bit RGB colors.
|
||||
bool _dithering;
|
||||
|
||||
/// The decay power > 0. A value of exactly 1 is linear decay, higher numbers indicate a faster decay rate.
|
||||
double _decay;
|
||||
|
||||
/// Value of 1.0 / settlingTime; inverse of the window size used for weighting of frames.
|
||||
floatT _invWindow;
|
||||
|
||||
struct SMOOTHING_CFG
|
||||
{
|
||||
bool pause;
|
||||
int64_t settlingTime;
|
||||
int64_t updateInterval;
|
||||
unsigned outputDelay;
|
||||
};
|
||||
/// The type of smoothing to perform
|
||||
SmoothingType smoothingType;
|
||||
|
||||
/// Whether to pause output
|
||||
bool pause;
|
||||
|
||||
/// The time of the smoothing window.
|
||||
int64_t settlingTime;
|
||||
|
||||
/// The interval time in millisecons of the timer used for scheduling LED update operations. A value of 0 indicates sub-millisecond timing.
|
||||
int64_t updateInterval;
|
||||
|
||||
// The rate at which color frames should be written to LED device.
|
||||
double outputRate;
|
||||
|
||||
/// The rate at which interpolation of LED frames should be performed.
|
||||
double interpolationRate;
|
||||
|
||||
/// The number of frames the output is delayed
|
||||
unsigned outputDelay;
|
||||
|
||||
/// Whether to apply temproral dithering to diffuse rounding errors when downsampling to 8-bit RGB colors. Improves color accuracy.
|
||||
bool dithering;
|
||||
|
||||
/// The decay power > 0. A value of exactly 1 is linear decay, higher numbers indicate a faster decay rate.
|
||||
double decay;
|
||||
};
|
||||
/// smooth config list
|
||||
QVector<SMOOTHING_CFG> _cfgList;
|
||||
|
||||
unsigned _currentConfigId;
|
||||
bool _enabled;
|
||||
bool _enabled;
|
||||
|
||||
/// Pushes the colors into the frame queue and cleans outdated frames from memory.
|
||||
///
|
||||
/// @param ledColors The next colors to queue
|
||||
void rememberFrame(const std::vector<ColorRgb> &ledColors);
|
||||
|
||||
/// Frees the LED frames that were queued for calculating the moving average.
|
||||
void clearRememberedFrames();
|
||||
|
||||
/// (Re-)Initializes the color-component vectors with given number of values.
|
||||
///
|
||||
/// @param ledCount The number of colors.
|
||||
void intitializeComponentVectors(const size_t ledCount);
|
||||
|
||||
/// The number of led component-values that must be held per color; i.e. size of the color vectors reds / greens / blues
|
||||
size_t _ledCount = 0;
|
||||
|
||||
/// The average component colors red, green, blue of the leds
|
||||
std::vector<floatT> meanValues;
|
||||
|
||||
/// The residual component errors of the leds
|
||||
std::vector<floatT> residualErrors;
|
||||
|
||||
/// The accumulated led color values in 64-bit fixed point domain
|
||||
std::vector<uint64_t> tempValues;
|
||||
|
||||
/// Writes the target frame RGB data to the LED device without any interpolation.
|
||||
void writeDirect();
|
||||
|
||||
/// Writes the assembled RGB data to the LED device.
|
||||
void writeFrame();
|
||||
|
||||
/// Assembles a frame of LED colors in order to write RGB data to the LED device.
|
||||
/// Temporal dithering is applied to diffuse the downsampling error for RGB color components.
|
||||
void assembleAndDitherFrame();
|
||||
|
||||
/// Assembles a frame of LED colors in order to write RGB data to the LED device.
|
||||
/// No dithering is applied, RGB color components are just rounded to nearest integer.
|
||||
void assembleFrame();
|
||||
|
||||
/// Prepares a frame of LED colors by interpolating using the current smoothing window
|
||||
void interpolateFrame();
|
||||
|
||||
/// Performes a decay-based smoothing effect. The frames are interpolated based on their age and a given decay-power.
|
||||
///
|
||||
/// The ingress frames that were received during the current smoothing window are reduced using a weighted moving average
|
||||
/// by applying the weighting-function to the color components of each frame.
|
||||
///
|
||||
/// When downsampling the average color values to the 8-bit RGB resolution of the LED device, rounding errors are minimized
|
||||
/// by temporal dithering algorithm (error diffusion of residual errors).
|
||||
void performDecay(const int64_t now);
|
||||
|
||||
/// Performs a linear smoothing effect
|
||||
void performLinear(const int64_t now);
|
||||
|
||||
/// Aggregates the RGB components of the LED colors using the given weight and updates weighted accordingly
|
||||
///
|
||||
/// @param colors The LED colors to aggregate.
|
||||
/// @param weighted The target vector, that accumulates the terms.
|
||||
/// @param weight The weight to use.
|
||||
static inline void aggregateComponents(const std::vector<ColorRgb>& colors, std::vector<uint64_t>& weighted, const floatT weight);
|
||||
|
||||
/// Gets the current time in microseconds from high precision system clock.
|
||||
inline int64_t micros() const;
|
||||
|
||||
/// The time, when the rendering statistics were logged previously
|
||||
int64_t _renderedStatTime;
|
||||
|
||||
/// The total number of frames that were rendered to the LED device
|
||||
int64_t _renderedCounter;
|
||||
|
||||
/// The count of frames that have been rendered to the LED device when statistics were shown previously
|
||||
int64_t _renderedStatCounter;
|
||||
|
||||
/// The total number of frames that were interpolated using the smoothing algorithm
|
||||
int64_t _interpolationCounter;
|
||||
|
||||
/// The count of frames that have been interpolated when statistics were shown previously
|
||||
int64_t _interpolationStatCounter;
|
||||
|
||||
/// Frame weighting function for finding the frame's integral value
|
||||
///
|
||||
/// @param frameStart The start of frame time.
|
||||
/// @param frameEnd The end of frame time.
|
||||
/// @param windowStart The window start time.
|
||||
/// @returns The frame weight.
|
||||
std::function<floatT(int64_t, int64_t, int64_t)> _weightFrame;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -14,11 +14,10 @@
|
|||
{
|
||||
"type" : "string",
|
||||
"title" : "edt_conf_smooth_type_title",
|
||||
"enum" : ["linear"],
|
||||
"enum" : ["linear", "decay"],
|
||||
"default" : "linear",
|
||||
"options" : {
|
||||
"enum_titles" : ["edt_conf_enum_linear"],
|
||||
"hidden":true
|
||||
"enum_titles" : ["edt_conf_enum_linear", "edt_conf_enum_decay"]
|
||||
},
|
||||
"propertyOrder" : 2
|
||||
},
|
||||
|
|
@ -27,7 +26,7 @@
|
|||
"type" : "integer",
|
||||
"title" : "edt_conf_smooth_time_ms_title",
|
||||
"minimum" : 25,
|
||||
"maximum": 600,
|
||||
"maximum": 5000,
|
||||
"default" : 200,
|
||||
"append" : "edt_append_ms",
|
||||
"propertyOrder" : 3
|
||||
|
|
@ -37,11 +36,47 @@
|
|||
"type" : "number",
|
||||
"title" : "edt_conf_smooth_updateFrequency_title",
|
||||
"minimum" : 1.0,
|
||||
"maximum" : 100.0,
|
||||
"maximum" : 2000.0,
|
||||
"default" : 25.0,
|
||||
"append" : "edt_append_hz",
|
||||
"propertyOrder" : 4
|
||||
},
|
||||
"interpolationRate" :
|
||||
{
|
||||
"type" : "number",
|
||||
"title" : "edt_conf_smooth_interpolationRate_title",
|
||||
"minimum" : 1.0,
|
||||
"maximum": 1000.0,
|
||||
"default" : 0,
|
||||
"append" : "edt_append_hz",
|
||||
"propertyOrder" : 5
|
||||
},
|
||||
"outputRate" :
|
||||
{
|
||||
"type" : "number",
|
||||
"title" : "edt_conf_smooth_outputRate_title",
|
||||
"minimum" : 1.0,
|
||||
"maximum": 1000.0,
|
||||
"default" : 0,
|
||||
"append" : "edt_append_hz",
|
||||
"propertyOrder" : 6
|
||||
},
|
||||
"decay" :
|
||||
{
|
||||
"type" : "number",
|
||||
"title" : "edt_conf_smooth_decay_title",
|
||||
"default" : 1.0,
|
||||
"minimum" : 1.0,
|
||||
"maximum": 20.0,
|
||||
"propertyOrder" : 7
|
||||
},
|
||||
"dithering" :
|
||||
{
|
||||
"type" : "boolean",
|
||||
"title" : "edt_conf_smooth_dithering_title",
|
||||
"default" : true,
|
||||
"propertyOrder" : 8
|
||||
},
|
||||
"updateDelay" :
|
||||
{
|
||||
"type" : "integer",
|
||||
|
|
@ -50,14 +85,14 @@
|
|||
"maximum": 2048,
|
||||
"default" : 0,
|
||||
"append" : "edt_append_ms",
|
||||
"propertyOrder" : 5
|
||||
"propertyOrder" : 9
|
||||
},
|
||||
"continuousOutput" :
|
||||
{
|
||||
"type" : "boolean",
|
||||
"title" : "edt_conf_smooth_continuousOutput_title",
|
||||
"default" : true,
|
||||
"propertyOrder" : 6
|
||||
"propertyOrder" : 10
|
||||
}
|
||||
},
|
||||
"additionalProperties" : false
|
||||
|
|
|
|||
Loading…
Reference in New Issue