png可以通过32位转8位 压缩图片

[achims1]

[achims1]

func picTransfer(im image.Image, defaultColor color.Palette) image.Image {
var wg sync.WaitGroup
imm := image.NewPaletted(im.Bounds(), defaultColor)
minyY, maxY := im.Bounds().Min.Y, im.Bounds().Max.Y
for i := minyY; i < maxY; i += 200 {
wg.Add(1)
go func(my int) {
defer wg.Done()
for y := my; y < my+200; y++ {
for x := im.Bounds().Min.X; x < im.Bounds().Max.X; x++ {
r, g, b, a := im.At(x, y).RGBA()
co := color.RGBA{
R: uint8(r),
G: uint8(g),
B: uint8(b),
A: uint8(a),
}
imm.Set(x, y, co)
}
}
}(i)
}
wg.Wait()
return imm
}

[GwynethLlewelyn]

While your code is certainly useful and correct, I don't quite understand how exactly it ties into gwpp/tinify-go.

You seem to be giving just an alternative to using compression with the Tinify API by using the standard library ìmage` instead.