/
main.go
70 lines (56 loc) · 1.21 KB
/
main.go
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package main
import (
"bytes"
"flag"
"fmt"
"image"
"log"
"os"
"sync"
_ "image/gif"
_ "image/jpeg"
_ "image/png"
"github.com/soniakeys/quant"
"github.com/soniakeys/quant/mean"
"github.com/soniakeys/quant/median"
)
func main() {
mode := flag.String("mode", "median", "'median' or 'mean' (default 'median')")
size := flag.Int("size", 16, "Palette size (default 16)")
flag.Parse()
paths := flag.Args()
if len(paths) == 0 {
log.Fatal("No images specified")
}
var wg sync.WaitGroup
wg.Add(len(paths))
for _, path := range paths {
go func(path string) {
defer wg.Done()
var buff bytes.Buffer
buff.WriteString(fmt.Sprintf("\n%s\n", path))
reader, err := os.Open(path)
if err != nil {
log.Fatal(err)
}
defer reader.Close()
img, _, err := image.Decode(reader)
if err != nil {
log.Fatal(err)
}
var q quant.Quantizer
if *mode == "median" {
q = median.Quantizer(*size)
} else {
q = mean.Quantizer(*size)
}
pal := q.Palette(img)
for _, c := range pal.ColorPalette() {
r, g, b, _ := c.RGBA()
buff.WriteString(fmt.Sprintf("#%02x%02x%02x\n", uint8(r>>8), uint8(g>>8), uint8(b>>8)))
}
fmt.Print(buff.String())
}(path)
}
wg.Wait()
}