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32 lines
726 B
JavaScript
32 lines
726 B
JavaScript
if (!exec_args[1]) {
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printerrln("Usage: jpdectest image.jpg")
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}
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filesystem.open("A", exec_args[1], "R")
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let status = com.getStatusCode(0)
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let infile = undefined
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if (0 != status) return status
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let fileLen = filesystem.getFileLen("A")
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println(`DMA reading ${fileLen} bytes from disk...`)
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infile = sys.malloc(fileLen)
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dma.comToRam(0, 0, infile, fileLen)
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println("decoding")
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// decode
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const [imgw, imgh, channels, imageData] = graphics.decodeImageResample(infile, fileLen, -1, -1)
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println(`dim: ${imgw}x${imgh}`)
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println(`converting to displayable format...`)
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// convert colour
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graphics.setGraphicsMode(0)
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graphics.imageToDisplayableFormat(imageData, -1048577, imgw, imgh, 4, 1)
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sys.free(imageData)
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sys.free(infile)
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