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gif: faster median cut quantization

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This commit is contained in:
Hill Ma 2022-11-09 20:48:18 -08:00
parent 444b7b31d7
commit a238a0ea6f
3 changed files with 8 additions and 6 deletions
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2
go.mod
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@ -6,6 +6,6 @@ require (
github.com/MaxHalford/halfgone v0.0.0-20171017091812-482157b86ccb
github.com/chromedp/cdproto v0.0.0-20221029224954-108014bf7279
github.com/chromedp/chromedp v0.8.6
github.com/ericpauley/go-quantize v0.0.0-20200331213906-ae555eb2afa4
github.com/soniakeys/quant v1.0.0
golang.org/x/sys v0.1.0 // indirect
)

4
go.sum
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@ -7,8 +7,6 @@ github.com/chromedp/chromedp v0.8.6 h1:KobeeqR2dpfKSG1prS3Y6+FbffMmGC6xmAobRXA9Q
github.com/chromedp/chromedp v0.8.6/go.mod h1:nBYHoD6YSNzrr82cIeuOzhw1Jo/s2o0QQ+ifTeoCZ+c=
github.com/chromedp/sysutil v1.0.0 h1:+ZxhTpfpZlmchB58ih/LBHX52ky7w2VhQVKQMucy3Ic=
github.com/chromedp/sysutil v1.0.0/go.mod h1:kgWmDdq8fTzXYcKIBqIYvRRTnYb9aNS9moAV0xufSww=
github.com/ericpauley/go-quantize v0.0.0-20200331213906-ae555eb2afa4 h1:BBade+JlV/f7JstZ4pitd4tHhpN+w+6I+LyOS7B4fyU=
github.com/ericpauley/go-quantize v0.0.0-20200331213906-ae555eb2afa4/go.mod h1:H7chHJglrhPPzetLdzBleF8d22WYOv7UM/lEKYiwlKM=
github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
@ -23,6 +21,8 @@ github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0
github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
github.com/orisano/pixelmatch v0.0.0-20220722002657-fb0b55479cde h1:x0TT0RDC7UhAVbbWWBzr41ElhJx5tXPWkIHA2HWPRuw=
github.com/orisano/pixelmatch v0.0.0-20220722002657-fb0b55479cde/go.mod h1:nZgzbfBr3hhjoZnS66nKrHmduYNpc34ny7RK4z5/HM0=
github.com/soniakeys/quant v1.0.0 h1:N1um9ktjbkZVcywBVAAYpZYSHxEfJGzshHCxx/DaI0Y=
github.com/soniakeys/quant v1.0.0/go.mod h1:HI1k023QuVbD4H8i9YdfZP2munIHU4QpjsImz6Y6zds=
golang.org/x/sys v0.0.0-20201207223542-d4d67f95c62d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=

8
wrp.go
View File

@ -35,7 +35,7 @@ import (
"github.com/chromedp/cdproto/emulation"
"github.com/chromedp/cdproto/page"
"github.com/chromedp/chromedp"
"github.com/ericpauley/go-quantize/quantize"
"github.com/soniakeys/quant/median"
)
var (
@ -301,7 +301,9 @@ func (rq *wrpReq) capture() {
}
var gifbuf bytes.Buffer
st := time.Now()
err = gif.Encode(&gifbuf, i, &gif.Options{NumColors: int(rq.colors), Quantizer: quantize.MedianCutQuantizer{}})
q := median.Quantizer(rq.colors)
p := q.Paletted(i)
err = gif.Encode(&gifbuf, p, &gif.Options{})
if err != nil {
log.Printf("%s Failed to encode GIF: %s\n", rq.r.RemoteAddr, err)
fmt.Fprintf(rq.w, "<BR>Unable to encode GIF:<BR>%s<BR>\n", err)
@ -457,7 +459,7 @@ func main() {
flag.BoolVar(&headless, "h", true, "Headless mode - hide browser window")
flag.BoolVar(&debug, "d", false, "Debug ChromeDP")
flag.BoolVar(&noDel, "n", false, "Do not free maps and images after use")
flag.StringVar(&defType, "t", "gif", "Image type: gif|png")
flag.StringVar(&defType, "t", "png", "Image type: fastgif|gif|png")
flag.StringVar(&fgeom, "g", "1152x600x256", "Geometry: width x height x colors, height can be 0 for unlimited")
flag.StringVar(&tHTML, "ui", "wrp.html", "HTML template file for the UI")
flag.Parse()