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Add option to auto fix jpg orientation

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This commit is contained in:
Chris Lu
2014-05-15 01:08:00 -07:00
parent 025589adf8
commit dcd12576c6
5 changed files with 19 additions and 20 deletions
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16
go/images/orientation.go
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@@ -5,17 +5,12 @@ import (
"github.com/rwcarlsen/goexif/exif"
"image"
"image/draw"
"image/gif"
"image/jpeg"
"image/png"
"log"
)
//many code is copied from http://camlistore.org/pkg/images/images.go
func FixJpgOrientation(ext string, data []byte) (oriented []byte) {
if ext != ".jpg" {
return data
}
func FixJpgOrientation(data []byte) (oriented []byte) {
ex, err := exif.Decode(bytes.NewReader(data))
if err != nil {
return data
@@ -53,14 +48,7 @@ func FixJpgOrientation(ext string, data []byte) (oriented []byte) {
if srcImage, _, err := image.Decode(bytes.NewReader(data)); err == nil {
dstImage := flip(rotate(srcImage, angle), flipMode)
var buf bytes.Buffer
switch ext {
case ".png":
png.Encode(&buf, dstImage)
case ".jpg":
jpeg.Encode(&buf, dstImage, nil)
case ".gif":
gif.Encode(&buf, dstImage, nil)
}
jpeg.Encode(&buf, dstImage, nil)
return buf.Bytes()
}