Function getImageConfig

service/image.go:155–172

(reader io.Reader)

}

func getImageConfig(reader io.Reader) (image.Config, string, error) {
	// 读取图片的头部信息来获取图片尺寸
	config, format, err := image.DecodeConfig(reader)
	if err != nil {
		err = errors.New(fmt.Sprintf("fail to decode image config(gif, jpg, png): %s", err.Error()))
		common.SysLog(err.Error())
		config, err = webp.DecodeConfig(reader)
		if err != nil {
			err = errors.New(fmt.Sprintf("fail to decode image config(webp): %s", err.Error()))
			common.SysLog(err.Error())
		}
		format = "webp"
	}
	if err != nil {
		return image.Config{}, "", err
	}
	return config, format, nil
}