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Knusperli-esque post deblocking filter

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minjaesong
2025-09-12 14:13:40 +09:00
parent 433e3ea3ae
commit 957522a460
2 changed files with 508 additions and 203 deletions
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25
assets/disk0/tvdos/bin/playtev.js
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@@ -3,7 +3,8 @@
// Usage: playtev moviefile.tev [options]
// Options: -i (interactive), -debug-mv (show motion vector debug visualization)
// -deinterlace=algorithm (yadif or bwdif, default: yadif)
// -nodeblock (disble deblocking filter)
// -nodeblock (disable post-processing deblocking filter)
// -boundaryaware (enable boundary-aware decoding to prevent artifacts at DCT level)
const WIDTH = 560
const HEIGHT = 448
@@ -46,6 +47,7 @@ let interactive = false
let debugMotionVectors = false
let deinterlaceAlgorithm = "yadif"
let enableDeblocking = true // Default: enabled (use -nodeblock to disable)
let enableBoundaryAwareDecoding = false // Default: disabled (use -boundaryaware to enable) // suitable for still frame and slide shows, absolutely unsuitable for videos
if (exec_args.length > 2) {
for (let i = 2; i < exec_args.length; i++) {
@@ -56,6 +58,8 @@ if (exec_args.length > 2) {
debugMotionVectors = true
} else if (arg === "-nodeblock") {
enableDeblocking = false
} else if (arg === "-boundaryaware") {
enableBoundaryAwareDecoding = true
} else if (arg.startsWith("-deinterlace=")) {
deinterlaceAlgorithm = arg.substring(13)
}
@@ -97,6 +101,9 @@ audio.purgeQueue(0)
audio.setPcmMode(0)
audio.setMasterVolume(0, 255)
// set colour zero as half-opaque black
graphics.setPalette(0, 0, 0, 0, 9)
// Subtitle display functions
function clearSubtitleArea() {
// Clear the subtitle area at the bottom of the screen
@@ -392,7 +399,10 @@ if (version !== TEV_VERSION_YCOCG && version !== TEV_VERSION_XYB) {
let colorSpace = (version === TEV_VERSION_XYB) ? "XYB" : "YCoCg-R"
if (interactive) {
con.move(1,1)
println(`Push and hold Backspace to exit | TEV Format ${version} (${colorSpace}) | Deblocking: ${enableDeblocking ? 'ON' : 'OFF'}`)
if (colorSpace == "XYB")
println(`Push and hold Backspace to exit | TEV Format ${version} (${colorSpace}) | Deblock: ${enableDeblocking ? 'ON' : 'OFF'}, ${enableBoundaryAwareDecoding ? 'ON' : 'OFF'}`);
else
println(`Push and hold Backspace to exit | Deblock: ${enableDeblocking ? 'ON' : 'OFF'} | BoundaryAware: ${enableBoundaryAwareDecoding ? 'ON' : 'OFF'}`);
}
let width = seqread.readShort()
@@ -655,14 +665,14 @@ try {
if (isInterlaced) {
// For interlaced: decode current frame into currentFieldAddr
// For display: use prevFieldAddr as current, currentFieldAddr as next
graphics.tevDecode(blockDataPtr, nextFieldAddr, currentFieldAddr, width, decodingHeight, qualityY, qualityCo, qualityCg, trueFrameCount, debugMotionVectors, version, enableDeblocking)
graphics.tevDecode(blockDataPtr, nextFieldAddr, currentFieldAddr, width, decodingHeight, qualityY, qualityCo, qualityCg, trueFrameCount, debugMotionVectors, version, enableDeblocking, enableBoundaryAwareDecoding)
graphics.tevDeinterlace(trueFrameCount, width, decodingHeight, prevFieldAddr, currentFieldAddr, nextFieldAddr, CURRENT_RGB_ADDR, deinterlaceAlgorithm)
// Rotate field buffers for next frame: NEXT -> CURRENT -> PREV
rotateFieldBuffers()
} else {
// Progressive or first frame: normal decoding without temporal prediction
graphics.tevDecode(blockDataPtr, CURRENT_RGB_ADDR, PREV_RGB_ADDR, width, decodingHeight, qualityY, qualityCo, qualityCg, trueFrameCount, debugMotionVectors, version, enableDeblocking)
graphics.tevDecode(blockDataPtr, CURRENT_RGB_ADDR, PREV_RGB_ADDR, width, decodingHeight, qualityY, qualityCo, qualityCg, trueFrameCount, debugMotionVectors, version, enableDeblocking, enableBoundaryAwareDecoding)
}
decodeTime = (sys.nanoTime() - decodeStart) / 1000000.0 // Convert to milliseconds
@@ -750,10 +760,10 @@ try {
if (!hasSubtitle) {
con.move(31, 1)
graphics.setTextFore(161)
con.color_pair(253, 0)
print(`Frame: ${frameCount}/${totalFrames} (${((frameCount / akku2 * 100)|0) / 100}f) `)
con.move(32, 1)
graphics.setTextFore(161)
con.color_pair(253, 0)
print(`VRate: ${(getVideoRate() / 1024 * 8)|0} kbps `)
con.move(1, 1)
}
@@ -781,7 +791,10 @@ finally {
if (interactive) {
//con.clear()
}
// set colour zero as opaque black
}
graphics.setPalette(0, 0, 0, 0, 0)
con.move(cy, cx) // restore cursor
return errorlevel