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ntsc framerate handling

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This commit is contained in:
minjaesong
2025-09-16 22:59:45 +09:00
parent a639e116c5
commit ae59946883
3 changed files with 34 additions and 30 deletions
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50
assets/disk0/tvdos/bin/playtav.js
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@@ -553,7 +553,6 @@ let FRAME_TIME = 1.0 / header.fps
let frameCount = 0
let trueFrameCount = 0
let frameDuped = false
let stopPlay = false
let akku = FRAME_TIME
let akku2 = 0.0
@@ -613,38 +612,29 @@ try {
try {
// serial.println(actualSize)
// Duplicate every 1000th frame if NTSC (same as TEV)
if (!isNTSC || frameCount % 1000 != 501 || frameDuped) {
frameDuped = false
let decodeStart = sys.nanoTime()
let decodeStart = sys.nanoTime()
// Call TAV hardware decoder (like TEV's tevDecode but with RGB buffer outputs)
graphics.tavDecode(
blockDataPtr,
CURRENT_RGB_ADDR, PREV_RGB_ADDR, // RGB buffer pointers (not float arrays!)
header.width, header.height,
header.qualityY, header.qualityCo, header.qualityCg,
frameCount,
debugMotionVectors,
header.waveletFilter, // TAV-specific parameter
header.decompLevels, // TAV-specific parameter
enableDeblocking,
isLossless,
header.version // TAV version for colour space detection
)
// Call TAV hardware decoder (like TEV's tevDecode but with RGB buffer outputs)
graphics.tavDecode(
blockDataPtr,
CURRENT_RGB_ADDR, PREV_RGB_ADDR, // RGB buffer pointers (not float arrays!)
header.width, header.height,
header.qualityY, header.qualityCo, header.qualityCg,
frameCount,
debugMotionVectors,
header.waveletFilter, // TAV-specific parameter
header.decompLevels, // TAV-specific parameter
enableDeblocking,
isLossless,
header.version // TAV version for colour space detection
)
decodeTime = (sys.nanoTime() - decodeStart) / 1000000.0
decodeTime = (sys.nanoTime() - decodeStart) / 1000000.0
// Upload RGB buffer to display framebuffer (like TEV)
let uploadStart = sys.nanoTime()
graphics.uploadRGBToFramebuffer(CURRENT_RGB_ADDR, header.width, header.height, frameCount, true)
uploadTime = (sys.nanoTime() - uploadStart) / 1000000.0
} else {
frameCount -= 1
frameDuped = true
console.log(`Frame ${frameCount}: Duplicating previous frame`)
}
// Upload RGB buffer to display framebuffer (like TEV)
let uploadStart = sys.nanoTime()
graphics.uploadRGBToFramebuffer(CURRENT_RGB_ADDR, header.width, header.height, frameCount, true)
uploadTime = (sys.nanoTime() - uploadStart) / 1000000.0
// Defer audio playback until a first frame is sent
if (isInterlaced) {