mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-03-07 11:51:49 +09:00
55 lines
2.0 KiB
JavaScript
55 lines
2.0 KiB
JavaScript
if (exec_args[3] == undefined) {
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println("encodeipf <1/2> <input picture> <output filename> [/noalpha]")
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return 1
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}
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let noalpha = exec_args[4] != undefined && exec_args[4].toLowerCase() == "/noalpha"
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let infile = files.open(_G.shell.resolvePathInput(exec_args[2]).full)
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let outfile = files.open(_G.shell.resolvePathInput(exec_args[3]).full)
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let ipfType = (exec_args[1]|0) - 1
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let encodefun = ([graphics.encodeIpf1, graphics.encodeIpf2])[ipfType]
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if (encodefun === undefined) throw Error(`Unknown IPF format: ${exec_args[1]}`)
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// read input file
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let infilePtr = sys.malloc(infile.size)
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infile.pread(infilePtr, infile.size, 0)
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// decode input image
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const [imgw, imgh, channels, imageDataPtr] = graphics.decodeImage(infilePtr, infile.size) // stored as [R | G | B | (A)]
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sys.free(infilePtr)
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let hasAlpha = (4 == channels) && !noalpha
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// encode image
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let ipfBlockCount = Math.ceil(imgw / 4.0) * Math.ceil(imgh / 4.0)
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let ipfSizePerBlock = 12 + 4*(ipfType) + 8*hasAlpha
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let ipfRawSize = ipfSizePerBlock * ipfBlockCount
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let ipfarea = sys.malloc(ipfRawSize)
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let gzippedImage = sys.malloc(28 + ipfRawSize+8) // ipf file header + somewhat arbitrary number. Get the actual count using 28+gzlen
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encodefun(imageDataPtr, ipfarea, imgw, imgh, channels, hasAlpha, 0)
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let gzlen = gzip.compFromTo(ipfarea, ipfRawSize, gzippedImage + 28)
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sys.free(ipfarea)
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// write to the output bin
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//// write header
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;[
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0x1F, 0x54, 0x53, 0x56, 0x4D, 0x69, 0x50, 0x46, // magic
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imgw & 255, (imgw >> 8) & 255, // width
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imgh & 255, (imgh >> 8) & 255, // height
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0+hasAlpha, // has alpha
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ipfType, // ipf type
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved
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(gzlen >>> 0) & 255, // uncompressed size
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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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].forEach((b,i) => sys.poke(gzippedImage + i, b))
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outfile.mkFile()
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outfile.pwrite(gzippedImage, 28 + gzlen, 0)
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//dma.ramToCom(writeBuf, 0, writeCount)
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sys.free(gzippedImage)
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println(`Wrote ${28 + gzlen} bytes to the file`) |