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Changed video format; added TEV version 3 (XYB colour space)

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minjaesong
2025-08-26 22:17:45 +09:00
parent 6d982a9786
commit 33e77e378e
7 changed files with 2485 additions and 141 deletions
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46
assets/disk0/tvdos/bin/playtev.js
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@@ -7,7 +7,8 @@ const WIDTH = 560
const HEIGHT = 448
const BLOCK_SIZE = 16 // 16x16 blocks for YCoCg-R
const TEV_MAGIC = [0x1F, 0x54, 0x53, 0x56, 0x4D, 0x54, 0x45, 0x56] // "\x1FTSVM TEV"
const TEV_VERSION = 2 // YCoCg-R version
const TEV_VERSION_YCOCG = 2 // YCoCg-R version
const TEV_VERSION_XYB = 3 // XYB version
const SND_BASE_ADDR = audio.getBaseAddr()
const pcm = require("pcm")
const MP2_FRAME_SIZE = [144,216,252,288,360,432,504,576,720,864,1008,1152,1440,1728]
@@ -35,11 +36,6 @@ let notifHideTimer = 0
const NOTIF_SHOWUPTIME = 3000000000
let [cy, cx] = con.getyx()
if (interactive) {
con.move(1,1)
println("Push and hold Backspace to exit")
}
let seqreadserial = require("seqread")
let seqreadtape = require("seqreadtape")
let seqread = undefined
@@ -285,11 +281,17 @@ if (!magicMatching) {
// Read header
let version = seqread.readOneByte()
if (version !== TEV_VERSION) {
println(`Unsupported TEV version: ${version} (expected ${TEV_VERSION})`)
if (version !== TEV_VERSION_YCOCG && version !== TEV_VERSION_XYB) {
println(`Unsupported TEV version: ${version} (expected ${TEV_VERSION_YCOCG} for YCoCg-R or ${TEV_VERSION_XYB} for XYB)`)
return 1
}
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})`)
}
let width = seqread.readShort()
let height = seqread.readShort()
let fps = seqread.readOneByte()
@@ -353,6 +355,8 @@ let biasTime = 0
const BIAS_LIGHTING_MIN = 1.0 / 16.0
let oldBgcol = [BIAS_LIGHTING_MIN, BIAS_LIGHTING_MIN, BIAS_LIGHTING_MIN]
let notifHidden = false
function getRGBfromScr(x, y) {
let offset = y * WIDTH + x
let rg = sys.peek(-1048577 - offset)
@@ -425,18 +429,6 @@ try {
} else if (packetType == TEV_PACKET_IFRAME || packetType == TEV_PACKET_PFRAME) {
// Video frame packet (always includes rate control factor)
let payloadLen = seqread.readInt()
// Always read rate control factor (4 bytes, little-endian float)
let rateFactorBytes = seqread.readBytes(4)
let view = new DataView(new ArrayBuffer(4))
for (let i = 0; i < 4; i++) {
view.setUint8(i, sys.peek(rateFactorBytes + i))
}
let rateControlFactor = view.getFloat32(0, true) // true = little-endian
//serial.println(`rateControlFactor = ${rateControlFactor}`)
sys.free(rateFactorBytes)
payloadLen -= 4 // Subtract rate factor size from payload
let compressedPtr = seqread.readBytes(payloadLen)
updateDataRateBin(payloadLen)
@@ -469,10 +461,10 @@ try {
continue
}
// Hardware-accelerated TEV YCoCg-R decoding to RGB buffers (with rate control factor)
// Hardware-accelerated TEV decoding to RGB buffers (YCoCg-R or XYB based on version)
try {
let decodeStart = sys.nanoTime()
graphics.tevDecode(blockDataPtr, CURRENT_RGB_ADDR, PREV_RGB_ADDR, width, height, quality, debugMotionVectors, rateControlFactor)
graphics.tevDecode(blockDataPtr, CURRENT_RGB_ADDR, PREV_RGB_ADDR, width, height, quality, debugMotionVectors, version)
decodeTime = (sys.nanoTime() - decodeStart) / 1000000.0 // Convert to milliseconds
// Upload RGB buffer to display framebuffer with dithering
@@ -487,7 +479,7 @@ try {
audioFired = true
}
} catch (e) {
serial.println(`Frame ${frameCount}: Hardware YCoCg-R decode failed: ${e}`)
serial.println(`Frame ${frameCount}: Hardware ${colorSpace} decode failed: ${e}`)
}
sys.free(compressedPtr)
@@ -531,6 +523,12 @@ try {
// Simple progress display
if (interactive) {
notifHideTimer += (t2 - t1)
if (!notifHidden && notifHideTimer > (NOTIF_SHOWUPTIME + FRAME_TIME)) {
con.clear()
notifHidden = true
}
con.move(31, 1)
graphics.setTextFore(161)
print(`Frame: ${frameCount}/${totalFrames} (${((frameCount / akku2 * 100)|0) / 100}f) `)
@@ -544,7 +542,7 @@ try {
}
}
catch (e) {
printerrln(`TEV YCoCg-R decode error: ${e}`)
printerrln(`TEV ${colorSpace} decode error: ${e}`)
errorlevel = 1
}
finally {