From c070c02f3fcb8c2c8dfa1ffcadf72a4fb827a43a Mon Sep 17 00:00:00 2001
From: liuxiaolong <736321739@qq.com>
Date: 星期三, 20 十一月 2019 14:15:34 +0800
Subject: [PATCH] back
---
extend/util/util.go | 143 ++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 138 insertions(+), 5 deletions(-)
diff --git a/extend/util/util.go b/extend/util/util.go
index b9af7da..542dd2c 100644
--- a/extend/util/util.go
+++ b/extend/util/util.go
@@ -1,10 +1,19 @@
package util
import (
+ "bytes"
"encoding/json"
+ "image"
+ "io/ioutil"
+ "net/http"
+ "strconv"
+ "webserver/extend/code"
+
+ "basic.com/pubsub/protomsg.git"
"github.com/gin-gonic/gin"
"github.com/golang/glog"
- "webserver/extend/code"
+ "github.com/pierrec/lz4"
+ "gocv.io/x/gocv"
"crypto/rand"
"fmt"
@@ -49,14 +58,14 @@
//struct杞琺ap
func Struct2Map(obj interface{}) map[string]interface{} {
- resultMap :=make(map[string]interface{},0)
+ resultMap := make(map[string]interface{}, 0)
bytesData, err := json.Marshal(obj)
- if err !=nil {
+ if err != nil {
return resultMap
}
json.Unmarshal(bytesData, &resultMap)
return resultMap
-
+
//
//t := reflect.TypeOf(obj)
//v := reflect.ValueOf(obj)
@@ -66,4 +75,128 @@
// data[t.Field(i).Name] = v.Field(i).Interface()
//}
//return data
-}
\ No newline at end of file
+}
+
+func ReadImgData(url string) ([]byte, error) {
+ resp, err := http.Get(url)
+ if err != nil {
+ return nil, err
+ }
+ defer resp.Body.Close()
+ pix, err := ioutil.ReadAll(resp.Body)
+ if err != nil {
+ return nil, err
+ }
+ return pix, nil
+}
+
+// 鎸夊昂瀵稿幓鍒囧浘
+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
+}
+
+// 闀垮鍙樹负涓�姣斾竴锛屾瘡杈瑰悇鎵╃櫨鍒嗕箣20
+func EnlargeSize(x0, y0, x1, y1 int, i protomsg.Image) (x0_new, y0_new, x1_new, y1_new int) {
+ // 鍏堟妸闀垮鍙樹负涓�姣斾竴
+ 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)
+ }
+
+ // 鍐嶆妸姣忚竟鍚勬墿澶х櫨鍒嗕箣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
+}
+
+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
+}
--
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