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/*
* Copyright (C) 2014 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package graphic
import (
"golang.org/x/image/bmp"
"golang.org/x/image/tiff"
"image"
"image/jpeg"
"image/png"
"io"
"os"
)
// LoadImage load image file and return image.Image object.
func LoadImage(imgfile string) (img image.Image, err error) {
f, err := os.Open(imgfile)
if err != nil {
return
}
defer f.Close()
img, _, err = image.Decode(f)
return
}
// SaveImage save image.Image object to target file.
func SaveImage(dstfile string, m image.Image, f Format) (err error) {
df, err := openFileOrCreate(dstfile)
if err != nil {
return
}
defer df.Close()
return doSaveImage(df, m, f)
}
func doSaveImage(w io.Writer, m image.Image, f Format) (err error) {
switch f {
case FormatPng:
err = png.Encode(w, m)
case FormatJpeg:
err = jpeg.Encode(w, m, nil)
case FormatBmp:
err = bmp.Encode(w, m)
case FormatTiff:
err = tiff.Encode(w, m, nil)
default:
err = png.Encode(w, m)
}
return
}
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