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keep conf for aardGl and legacy arDetect separate

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Tamius Han 2020-04-30 02:07:47 +02:00
parent 96803e9b66
commit b950fef806
1 changed files with 120 additions and 0 deletions
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src/ext/conf/ExtensionConf.js
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@ -138,6 +138,126 @@ var ExtensionConf = {
testRowOffset: 0.02 // we test this % of height from detected edge
}
},
aardGl: {
disabledReason: "", // if automatic aspect ratio has been disabled, show reason
allowedMisaligned: 0.05, // top and bottom letterbox thickness can differ by this much.
// Any more and we don't adjust ar.
allowedArVariance: 0.075, // amount by which old ar can differ from the new (1 = 100%)
timers: { // autodetection frequency
playing: 333, // while playing
paused: 3000, // while paused
error: 3000, // after error
minimumTimeout: 5,
},
sampleCols: 32,
canvasDimensions: {
blackframeCanvas: { // smaller than sample canvas, blackframe canvas is used to recon for black frames
// it's not used to detect aspect ratio by itself, so it can be tiny af
width: 16,
height: 9,
},
sampleCanvas: { // size of image sample for detecting aspect ratio. Bigger size means more accurate results,
// at the expense of performance. Width == sample texture size (size of webGL canvas is pegged
// on sample count)
width: 640,
height: 360,
},
},
// samplingInterval: 10, // we sample at columns at (width/this) * [ 1 .. this - 1]
blackframe: {
sufficientColorVariance: 0.10, // calculate difference between average intensity and pixel, for every pixel for every color
// component. Average intensity is normalized to where 0 is black and 1 is biggest value for
// that component. If sum of differences between normalized average intensity and normalized
// component varies more than this % between color components, we can afford to use less strict
// cummulative treshold.
cumulativeThresholdLax: 1600,
cumulativeThresholdStrict: 2560,// if we add values of all pixels together and get more than this, the frame is bright enough.
// (note: blackframe is 16x9 px -> 144px total. cumulative threshold can be reached fast)
blackPixelsCondition: 0.6, // How much pixels must be black (1 all, 0 none) before we consider frame as black. Takes
// precedence over cumulative threshold: if blackPixelsCondition is met, the frame is dark
// regardless of whether cumulative threshold has been reached.
},
blackbar: {
blackLevel: 10, // everything darker than 10/255 across all RGB components is considered black by
// default. blackLevel can decrease if we detect darker black.
threshold: 16, // if pixel is darker than the sum of black level and this value, we count it as black
// on 0-255. Needs to be fairly high (8 might not cut it) due to compression
// artifacts in the video itself
frameThreshold: 4, // treshold, but when doing blackframe test
imageThreshold: 16, // in order to detect pixel as "not black", the pixel must be brighter than
// the sum of black level, threshold and this value.
gradientThreshold: 2, // When trying to determine thickness of the black bars, we take 2 values: position of
// the last pixel that's darker than our threshold, and position of the first pixel that's
// brighter than our image threshold. If positions are more than this many pixels apart,
// we assume we aren't looking at letterbox and thus don't correct the aspect ratio.
gradientSampleSize: 16, // How far do we look to find the gradient
maxGradient: 6, // if two neighbouring pixels in gradientSampleSize differ by more than this, then we aren't
// looking at a gradient
gradientNegativeTreshold: -2,
gradientMaxSD: 6, // reserved for future use
antiGradientMode: AntiGradientMode.Lax,
},
variableBlackbarThresholdOptions: { // In case of poor bitrate videos, jpeg artifacts may cause us issues
// FOR FUTURE USE
enabled: true, // allow increasing blackbar threshold
disableArDetectOnMax: true, // disable autodetection when threshold goes over max blackbar threshold
maxBlackbarThreshold: 48, // max threshold (don't increase past this)
thresholdStep: 8, // when failing to set aspect ratio, increase threshold by this much
increaseAfterConsecutiveResets: 2 // increase if AR resets this many times in a row
},
sampling: {
staticCols: 9, // we take a column at [0-n]/n-th parts along the width and sample it
randomCols: 0, // we add this many randomly selected columns to the static columns
staticRows: 9, // forms grid with staticSampleCols. Determined in the same way. For black frame checks
},
guardLine: { // all pixels on the guardline need to be black, or else we trigger AR recalculation
// (if AR fails to be recalculated, we reset AR)
enabled: true,
ignoreEdgeMargin: 0.20, // we ignore anything that pokes over the black line this close to the edge
// (relative to width of the sample)
imageTestThreshold: 0.1, // when testing for image, this much pixels must be over blackbarThreshold
edgeTolerancePx: 2, // black edge violation is performed this far from reported 'last black pixel'
edgeTolerancePercent: null // unused. same as above, except use % of canvas height instead of pixels
},
fallbackMode: {
enabled: true,
safetyBorderPx: 5, // determines the thickness of safety border in fallback mode
noTriggerZonePx: 8 // if we detect edge less than this many pixels thick, we don't correct.
},
arSwitchLimiter: { // to be implemented
switches: 2, // we can switch this many times
period: 2.0 // per this period
},
edgeDetection: {
sampleWidth: 8, // we take a sample this wide for edge detection
detectionThreshold: 4, // sample needs to have this many non-black pixels to be a valid edge
confirmationThreshold: 1, //
singleSideConfirmationThreshold: 3, // we need this much edges (out of all samples, not just edges) in order
// to confirm an edge in case there's no edges on top or bottom (other
// than logo, of course)
logoThreshold: 0.15, // if edge candidate sits with count greater than this*all_samples, it can't be logo
// or watermark.
edgeTolerancePx: 1, // we check for black edge violation this far from detection point
edgeTolerancePercent: null, // we check for black edge detection this % of height from detection point. unused
middleIgnoredArea: 0.2, // we ignore this % of canvas height towards edges while detecting aspect ratios
minColsForSearch: 0.5, // if we hit the edge of blackbars for all but this many columns (%-wise), we don't
// continue with search. It's pointless, because black edge is higher/lower than we
// are now. (NOTE: keep this less than 1 in case we implement logo detection)
},
pillarTest: {
ignoreThinPillarsPx: 5, // ignore pillars that are less than this many pixels thick.
allowMisaligned: 0.05 // left and right edge can vary this much (%)
},
textLineTest: {
nonTextPulse: 0.10, // if a single continuous pulse has this many non-black pixels, we aren't dealing
// with text. This value is relative to canvas width (%)
pulsesToConfirm: 10, // this is a threshold to confirm we're seeing text.
pulsesToConfirmIfHalfBlack: 5, // this is the threshold to confirm we're seeing text if longest black pulse
// is over 50% of the canvas width
testRowOffset: 0.02 // we test this % of height from detected edge
}
},
zoom: {
minLogZoom: -1,
maxLogZoom: 3,