| | |
| | | package util |
| | | |
| | | import ( |
| | | "basic.com/pubsub/protomsg.git" |
| | | "bytes" |
| | | "encoding/json" |
| | | "errors" |
| | | "github.com/gin-gonic/gin" |
| | | "github.com/golang/glog" |
| | | "github.com/pierrec/lz4" |
| | | "gocv.io/x/gocv" |
| | | "image" |
| | | "net" |
| | | "os/exec" |
| | | "strconv" |
| | | "webserver/extend/code" |
| | | |
| | | "crypto/rand" |
| | |
| | | // data[t.Field(i).Name] = v.Field(i).Interface() |
| | | //} |
| | | //return data |
| | | } |
| | | } |
| | | |
| | | // 按尺寸去切图 |
| | | func SubImg(i protomsg.Image, x0, y0, x1, y1 int, ) []byte { |
| | | img, _ := gocv.NewMatFromBytes(int(i.Height), int(i.Width), gocv.MatTypeCV8UC3, i.Data) |
| | | rect := image.Rect(EnlargeSize(x0, y0, x1, y1, i)) |
| | | region := img.Region(rect) |
| | | bytes, _ := gocv.IMEncode(".jpg", region) |
| | | return bytes |
| | | } |
| | | |
| | | // 长宽变为一比一,每边各扩百分之20 |
| | | func EnlargeSize(x0, y0, x1, y1 int, i protomsg.Image) (x0_new, y0_new, x1_new, y1_new int) { |
| | | // 先把长宽变为一比一 |
| | | chazhi := (y1 - y0) - (x1 - x0) |
| | | x0 = x0 - chazhi/2 |
| | | if x0 < 0 { |
| | | x0 = 0 |
| | | } |
| | | x1 = x1 + chazhi/2 |
| | | if x1 > int(i.Width) { |
| | | x1 = int(i.Width) |
| | | } |
| | | |
| | | // 再把每边各扩大百分之20 |
| | | enlarge := float32(0.2) |
| | | x0_new = int((1+enlarge)*float32(x0) - enlarge*float32(x1)) |
| | | if x0_new < 0 { |
| | | x0_new = 0 |
| | | } |
| | | x1_new = int((1+enlarge)*float32(x1) - enlarge*float32(x0)) |
| | | if x1_new > int(i.Width) { |
| | | x1_new = int(i.Width) |
| | | } |
| | | y0_new = int((1+enlarge)*float32(y0) - enlarge*float32(y1)) |
| | | if y0_new < 0 { |
| | | y0_new = 0 |
| | | } |
| | | y1_new = int((1+enlarge)*float32(y1) - enlarge*float32(y0)) |
| | | if y1_new > int(i.Height) { |
| | | y1_new = int(i.Height) |
| | | } |
| | | return |
| | | } |
| | | |
| | | |
| | | // 获取本机网卡IP |
| | | func GetLocalIP(networkName string) (ipv4 string,mask string, err error) { |
| | | interfaces, err := net.Interfaces() |
| | | if err != nil { |
| | | return "","", err |
| | | } |
| | | |
| | | for _, i := range interfaces { |
| | | byName, err := net.InterfaceByName(i.Name) |
| | | if err != nil { |
| | | return "","", err |
| | | } |
| | | addresses, err := byName.Addrs() |
| | | for _, v := range addresses { |
| | | if ipnet, ok:=v.(*net.IPNet);ok && !ipnet.IP.IsLoopback(){ |
| | | if ipnet.IP.To4() !=nil{ |
| | | if byName.Name == networkName{ |
| | | maskStr := ipnet.Mask.String() |
| | | mask64, _ := strconv.ParseUint(maskStr, 16, 32) |
| | | return ipnet.IP.String(),IpIntToString(int(mask64)),nil |
| | | } |
| | | } |
| | | } |
| | | } |
| | | } |
| | | return "","", errors.New("ipv4 not found") |
| | | } |
| | | |
| | | func GetDefaultRoute(networkName string)(route string,err error){ |
| | | cmdStr := fmt.Sprintf("route | grep -P \"^default.*%s$\" | awk '{print $2}'",networkName) |
| | | cmd := exec.Command("/bin/sh","-c",cmdStr) |
| | | b, err := cmd.Output() |
| | | if err!=nil{ |
| | | return "",err |
| | | } |
| | | return string(b),nil |
| | | |
| | | } |
| | | |
| | | func StringIpToInt(ipstring string) int { |
| | | ipSegs := strings.Split(ipstring, ".") |
| | | var ipInt int = 0 |
| | | var pos uint = 24 |
| | | for _, ipSeg := range ipSegs { |
| | | tempInt, _ := strconv.Atoi(ipSeg) |
| | | tempInt = tempInt << pos |
| | | ipInt = ipInt | tempInt |
| | | pos -= 8 |
| | | } |
| | | return ipInt |
| | | } |
| | | |
| | | func IpIntToString(ipInt int) string{ |
| | | ipSegs := make([]string, 4) |
| | | var len int = len(ipSegs) |
| | | buffer := bytes.NewBufferString("") |
| | | for i := 0; i < len; i++ { |
| | | tempInt := ipInt & 0xFF |
| | | ipSegs[len-i-1] = strconv.Itoa(tempInt) |
| | | |
| | | ipInt = ipInt >> 8 |
| | | } |
| | | for i := 0; i < len; i++ { |
| | | buffer.WriteString(ipSegs[i]) |
| | | if i < len-1 { |
| | | buffer.WriteString(".") |
| | | } |
| | | } |
| | | return buffer.String() |
| | | } |
| | | |
| | | func ParseScore(compareScore float32) float32 { |
| | | if compareScore < 1 { |
| | | compareScore = compareScore * 100 |
| | | } |
| | | f, _ := strconv.ParseFloat(fmt.Sprintf("%2.2f", compareScore), 32) |
| | | return float32(f) |
| | | } |
| | | |
| | | // UnCompress uncompress |
| | | func UnCompress(in []byte) ([]byte, error) { |
| | | out := make([]byte, 10*len(in)) |
| | | n, err := lz4.UncompressBlock(in, out) |
| | | if err != nil { |
| | | fmt.Println(err) |
| | | return nil, err |
| | | } |
| | | out = out[:n] // uncompressed data |
| | | return out, nil |
| | | } |
| | | |
| | | // Compress compress |
| | | func Compress(in []byte) ([]byte, error) { |
| | | out := make([]byte, len(in)) |
| | | ht := make([]int, 64<<10) // buffer for the compression table |
| | | n, err := lz4.CompressBlock(in, out, ht) |
| | | if err != nil { |
| | | fmt.Println(err) |
| | | return nil, err |
| | | } |
| | | if n >= len(in) { |
| | | fmt.Println("image is not compressible") |
| | | } |
| | | out = out[:n] // compressed data |
| | | return out, nil |
| | | } |