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jpeg.go
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/
jpeg.go
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// Copyright 2015 Dmitry Vyukov. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package jpeg
import (
"bytes"
"image/jpeg"
"reflect"
)
func Fuzz(data []byte) int {
cfg, err := jpeg.DecodeConfig(bytes.NewReader(data))
if err != nil {
return 0
}
if cfg.Width*cfg.Height > 1e6 {
return 0
}
img, err := jpeg.Decode(bytes.NewReader(data))
if err != nil {
return 0
}
for q := 0; q <= 100; q += 10 {
var w bytes.Buffer
err = jpeg.Encode(&w, img, &jpeg.Options{q})
if err != nil {
panic(err)
}
img1, err := jpeg.Decode(&w)
if err != nil {
panic(err)
}
if !reflect.DeepEqual(img.Bounds(), img1.Bounds()) {
panic("bounds changed")
}
}
return 1
}