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76 lines
2.2 KiB
JavaScript
76 lines
2.2 KiB
JavaScript
// some manual config shits
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let TOTAL_FRAMES = 3813
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let FPS = 30
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let WIDTH = 560
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let HEIGHT = 448
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let PATHFUN = (i) => `/ddol/${(''+i).padStart(5,'0')}.png`
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const FBUF_SIZE = WIDTH * HEIGHT
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let infile = sys.malloc(512000) // somewhat arbitrary
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let imagearea = sys.malloc(FBUF_SIZE*3)
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let decodearea = sys.malloc(FBUF_SIZE)
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let ipfarea = sys.malloc(FBUF_SIZE)
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let gzippedImage = sys.malloc(512000) // somewhat arbitrary
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let outfilename = exec_args[1]
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if (!outfilename) return 1
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function appendToOutfile(bytes) {
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filesystem.open("A", outfilename, "A")
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filesystem.writeBytes("A", bytes)
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}
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function appendToOutfilePtr(ptr, len) {
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filesystem.open("A", outfilename, "A")
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dma.ramToCom(ptr, 0, len)
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}
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// write header to the file
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let headerBytes = [
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0x1F, 0x54, 0x53, 0x56, 0x4D, 0x4D, 0x4F, 0x56, // magic
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WIDTH & 255, (WIDTH >> 8) & 255, // width
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HEIGHT & 255, (HEIGHT >> 8) & 255, // height
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FPS & 255, (FPS >> 8) & 255, // FPS
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TOTAL_FRAMES & 255, (TOTAL_FRAMES >> 8) & 255, (TOTAL_FRAMES >> 16) & 255, (TOTAL_FRAMES >> 24) & 255, // frame count
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0x04, 0x01, // type 4 frames (force no-alpha)
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // reserved
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]
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filesystem.open("A", outfilename, "W")
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filesystem.writeBytes("A", headerBytes)
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for (let f = 1; f <= TOTAL_FRAMES; f++) {
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let fname = PATHFUN(f)
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filesystem.open("A", fname, "R")
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let fileLen = filesystem.getFileLen("A")
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dma.comToRam(0, 0, infile, fileLen)
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let [_1, _2, channels, _3] = graphics.decodeImageTo(infile, fileLen, imagearea)
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print(`Frame ${f}/${TOTAL_FRAMES} (Ch: ${channels}) ->`)
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// graphics.imageToDisplayableFormat(imagearea, decodearea, 560, 448, 3, 1)
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graphics.encodeIpf2(imagearea, ipfarea, WIDTH, HEIGHT, channels, false, f)
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let gzlen = gzip.compFromTo(ipfarea, FBUF_SIZE, gzippedImage)
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let frameSize = [
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(gzlen >>> 0) & 255,
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(gzlen >>> 8) & 255,
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(gzlen >>> 16) & 255,
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(gzlen >>> 24) & 255
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]
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appendToOutfile(frameSize)
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appendToOutfilePtr(gzippedImage, gzlen)
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print(` ${gzlen} bytes\n`)
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}
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sys.free(infile)
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sys.free(imagearea)
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sys.free(decodearea)
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sys.free(ipfarea)
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sys.free(gzippedImage) |