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TAV: 3D DWT makes coherent picture at least

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minjaesong
2025-10-17 02:01:08 +09:00
parent 0cf1173dd6
commit 93622fc8ca
5 changed files with 117 additions and 94 deletions
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10
assets/disk0/tvdos/bin/playtav.js
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@@ -1005,8 +1005,12 @@ try {
let motionY = new Array(gopSize)
for (let i = 0; i < gopSize; i++) {
motionX[i] = seqread.readShort() // Signed int16
motionY[i] = seqread.readShort()
// readShort() returns unsigned 16-bit, but motion vectors are signed int16
let mx = seqread.readShort()
let my = seqread.readShort()
// Convert to signed: if > 32767, it's negative
motionX[i] = (mx > 32767) ? (mx - 65536) : mx
motionY[i] = (my > 32767) ? (my - 65536) : my
}
// Read compressed data size
@@ -1019,7 +1023,7 @@ try {
// Check if GOP fits in VM memory
const gopMemoryNeeded = gopSize * FRAME_SIZE
if (gopMemoryNeeded > MAXMEM) {
throw new Error(`GOP too large: ${gopSize} frames needs ${(gopMemoryNeeded / 1048576).toFixed(2)}MB, but VM has only ${(MAXMEM / 1048576).toFixed(1)}MB. Max GOP size: 11 frames for 8MB system.`)
throw new Error(`GOP too large: ${gopSize} frames needs ${(gopMemoryNeeded / 1048576).toFixed(2)}MB, but VM has only ${(MAXMEM / 1048576).toFixed(1)}MB. Max GOP size: 8 frames for 8MB system.`)
}
// Allocate GOP buffers outside try block so finally can free them