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allow frameskipping for mov playback

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This commit is contained in:
minjaesong
2022-05-04 17:57:57 +09:00
parent b8956c22ff
commit aa36beee88
3 changed files with 59 additions and 27 deletions
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32
assets/disk0/decodemovipf.js
View File

@@ -158,16 +158,34 @@ while (framesRendered < frameCount) {
let t1 = sys.nanoTime()
if (akku >= frameTime) {
akku -= frameTime
let payloadLen = readInt()
let gzippedPtr = readBytes(payloadLen)
let frameUnit = 0 // 0: no decode, 1: normal playback, 2+: skip (n-1) frames
while (akku >= frameTime) {
akku -= frameTime
frameUnit += 1
}
gzip.decompFromTo(gzippedPtr, payloadLen, ipfbuf) // should return FBUF_SIZE
decodefun(ipfbuf, -1048577, -1310721, width, height, (type & 255) == 5)
sys.free(gzippedPtr)
if (frameUnit != 0) {
// skip frames if necessary
while (frameUnit >= 1) {
let payloadLen = readInt()
let gzippedPtr = readBytes(payloadLen)
if (frameUnit == 1) {
gzip.decompFromTo(gzippedPtr, payloadLen, ipfbuf) // should return FBUF_SIZE
decodefun(ipfbuf, -1048577, -1310721, width, height, (type & 255) == 5)
}
sys.free(gzippedPtr)
frameUnit -= 1
}
framesRendered += frameUnit
}
else {
framesRendered += 1
}
framesRendered += 1
}
sys.sleep(1)

27
assets/disk0/encodemovipf.js
View File

@@ -1,10 +1,17 @@
// some manual config shits
let TOTAL_FRAMES = 3813
let FPS = 30
let WIDTH = 560
let HEIGHT = 448
let PATHFUN = (i) => `/ddol/${(''+i).padStart(5,'0')}.png`
const FBUF_SIZE = 560*448
let infile = sys.malloc(120000) // somewhat arbitrary
const FBUF_SIZE = WIDTH * HEIGHT
let infile = sys.malloc(512000) // somewhat arbitrary
let imagearea = sys.malloc(FBUF_SIZE*3)
let decodearea = sys.malloc(FBUF_SIZE)
let ipfarea = sys.malloc(FBUF_SIZE)
let gzippedImage = sys.malloc(180000) // somewhat arbitrary
let gzippedImage = sys.malloc(512000) // somewhat arbitrary
let outfilename = exec_args[1]
@@ -23,10 +30,10 @@ function appendToOutfilePtr(ptr, len) {
// write header to the file
let headerBytes = [
0x1F, 0x54, 0x53, 0x56, 0x4D, 0x4D, 0x4F, 0x56, // magic
0x30, 0x02, // width (560)
0xC0, 0x01, // height (448)
0x1E, 0x00, // FPS (30)
0x34, 0x00, 0x00, 0x00, // frame count (52)
WIDTH & 255, (WIDTH >> 8) & 255, // width
HEIGHT & 255, (HEIGHT >> 8) & 255, // height
FPS & 255, (FPS >> 8) & 255, // FPS
TOTAL_FRAMES & 255, (TOTAL_FRAMES >> 8) & 255, (TOTAL_FRAMES >> 16) & 255, (TOTAL_FRAMES >> 24) & 255, // frame count
0x04, 0x00, // type 4 frames (force no-alpha)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // reserved
]
@@ -34,8 +41,8 @@ let headerBytes = [
filesystem.open("A", outfilename, "W")
filesystem.writeBytes("A", headerBytes)
for (let f = 1; f <=52; f++) {
let fname = `/movtestimg/${(''+f).padStart(3,'0')}.jpg`
for (let f = 1; f <= TOTAL_FRAMES; f++) {
let fname = PATHFUN(f)
filesystem.open("A", fname, "R")
let fileLen = filesystem.getFileLen("A")
dma.comToRam(0, 0, infile, fileLen)
@@ -45,7 +52,7 @@ for (let f = 1; f <=52; f++) {
print(`Encoding frame ${f}...`)
// graphics.imageToDisplayableFormat(imagearea, decodearea, 560, 448, 3, 1)
graphics.encodeIpf1(imagearea, ipfarea, 560, 448, 3, false, f)
graphics.encodeIpf1(imagearea, ipfarea, WIDTH, HEIGHT, 3, false, f)
let gzlen = gzip.compFromTo(ipfarea, FBUF_SIZE, gzippedImage)

27
assets/disk0/encodemovipf2.js
View File

@@ -1,10 +1,17 @@
// some manual config shits
let TOTAL_FRAMES = 3813
let FPS = 30
let WIDTH = 560
let HEIGHT = 448
let PATHFUN = (i) => `/ddol/${(''+i).padStart(5,'0')}.png`
const FBUF_SIZE = 560*448
let infile = sys.malloc(120000) // somewhat arbitrary
const FBUF_SIZE = WIDTH * HEIGHT
let infile = sys.malloc(512000) // somewhat arbitrary
let imagearea = sys.malloc(FBUF_SIZE*3)
let decodearea = sys.malloc(FBUF_SIZE)
let ipfarea = sys.malloc(FBUF_SIZE)
let gzippedImage = sys.malloc(180000) // somewhat arbitrary
let gzippedImage = sys.malloc(512000) // somewhat arbitrary
let outfilename = exec_args[1]
@@ -23,10 +30,10 @@ function appendToOutfilePtr(ptr, len) {
// write header to the file
let headerBytes = [
0x1F, 0x54, 0x53, 0x56, 0x4D, 0x4D, 0x4F, 0x56, // magic
0x30, 0x02, // width (560)
0xC0, 0x01, // height (448)
0x1E, 0x00, // FPS (30)
0x34, 0x00, 0x00, 0x00, // frame count (52)
WIDTH & 255, (WIDTH >> 8) & 255, // width
HEIGHT & 255, (HEIGHT >> 8) & 255, // height
FPS & 255, (FPS >> 8) & 255, // FPS
TOTAL_FRAMES & 255, (TOTAL_FRAMES >> 8) & 255, (TOTAL_FRAMES >> 16) & 255, (TOTAL_FRAMES >> 24) & 255, // frame count
0x04, 0x01, // type 4 frames (force no-alpha)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // reserved
]
@@ -34,8 +41,8 @@ let headerBytes = [
filesystem.open("A", outfilename, "W")
filesystem.writeBytes("A", headerBytes)
for (let f = 1; f <=52; f++) {
let fname = `/movtestimg/${(''+f).padStart(3,'0')}.jpg`
for (let f = 1; f <= TOTAL_FRAMES; f++) {
let fname = PATHFUN(f)
filesystem.open("A", fname, "R")
let fileLen = filesystem.getFileLen("A")
dma.comToRam(0, 0, infile, fileLen)
@@ -45,7 +52,7 @@ for (let f = 1; f <=52; f++) {
print(`Encoding frame ${f}...`)
// graphics.imageToDisplayableFormat(imagearea, decodearea, 560, 448, 3, 1)
graphics.encodeIpf2(imagearea, ipfarea, 560, 448, 3, false, f)
graphics.encodeIpf2(imagearea, ipfarea, WIDTH, HEIGHT, 3, false, f)
let gzlen = gzip.compFromTo(ipfarea, FBUF_SIZE, gzippedImage)