pixie/tests/benchmark_png.nim

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import benchy, nimPNG, pixie/fileformats/png, stb_image/read as stbi,
stb_image/write as stbr
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let data = readFile("tests/images/png/lenna.png")
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timeIt "pixie decode":
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keep decodePng(cast[seq[uint8]](data))
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timeIt "pixie encode":
let decoded = decodePng(cast[seq[uint8]](data))
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keep encodePng(decoded).len
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timeIt "nimPNG decode":
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keep decodePNG32(data)
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timeIt "nimPNG encode":
let decoded = decodePNG32(data)
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keep encodePNG32(decoded.data, decoded.width, decoded.height).pixels.len
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timeIt "stb_image decode":
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var width, height, channels: int
keep loadFromMemory(
cast[seq[byte]](data),
width,
height,
channels,
stbi.RGBA
)
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timeIt "stb_image encode":
var width, height, channels: int
let decoded = loadFromMemory(
cast[seq[byte]](data),
width,
height,
channels,
stbi.RGBA
)
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keep writePNG(width, height, channels, decoded).len