/
main.go
200 lines (169 loc) · 3.59 KB
/
main.go
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package main
import (
"flag"
"fmt"
"image"
"image/gif"
"image/jpeg"
"image/png"
"io/ioutil"
"log"
"os"
"strings"
"sync"
"time"
"github.com/andybons/gogif"
"gopkg.in/cheggaaa/pb.v1"
)
type File struct {
Index int
Name string
}
type Image struct {
Img *image.Paletted
Err error
}
var folder string
var outFilename string
var gorou int
func ReadFileList(folder string) ([]string, error) {
files, err := ioutil.ReadDir(folder)
if err != nil {
return nil, err
}
var names []string
for _, v := range files {
names = append(names, folder+"/"+v.Name())
}
return names, nil
}
func ReadToGif(filename string) (*image.Paletted, error) {
f, err := os.Open(filename)
if err != nil {
return nil, err
}
defer f.Close()
filenameSuffixs := strings.Split(filename, ".")
filenameSuffix := strings.ToUpper(filenameSuffixs[len(filenameSuffixs)-1])
var simage image.Image
switch filenameSuffix {
case "PNG":
simage, err = png.Decode(f)
if err != nil {
return nil, err
}
case "GIF":
simage, err = gif.Decode(f)
if err != nil {
return nil, err
}
case "JPEG":
simage, err = jpeg.Decode(f)
if err != nil {
return nil, err
}
default:
return nil, fmt.Errorf("unsupport image type(%s)", filenameSuffix)
}
bounds := simage.Bounds()
palettedImage := image.NewPaletted(bounds, nil)
quantizer := gogif.MedianCutQuantizer{NumColor: 64}
quantizer.Quantize(palettedImage, bounds, simage, image.ZP)
return palettedImage, nil
}
func SveAsGif(filename string, g *gif.GIF) error {
f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
return err
}
defer f.Close()
return gif.EncodeAll(f, g)
}
func Run(folder, output string, p int) error {
files, err := ReadFileList(folder)
if err != nil {
return err
}
fileCount := len(files)
FilePb := pb.StartNew(fileCount).Prefix("File ")
var fs = make(chan File, fileCount)
var gs = make([]*image.Paletted, fileCount)
var outGif = new(gif.GIF)
for k, v := range files {
FilePb.Increment()
fs <- File{
Index: k,
Name: v,
}
}
FilePb.Finish()
ReadImgPb := pb.StartNew(fileCount).Prefix("ReadImg ")
var sw sync.WaitGroup
for i := 0; i < p; i++ {
sw.Add(1)
go func() {
defer sw.Done()
for {
select {
case f := <-fs:
img, err := ReadToGif(f.Name)
if err != nil {
panic(f.Name)
}
gs[f.Index] = img
ReadImgPb.Increment()
default:
return
}
}
}()
}
sw.Wait()
ReadImgPb.Finish()
AppendGIFPb := pb.StartNew(fileCount + 1).Prefix("AppendGIF ")
for _, v := range gs {
outGif.Image = append(outGif.Image, v)
outGif.Delay = append(outGif.Delay, 0)
AppendGIFPb.Increment()
time.Sleep(time.Second)
}
err = SveAsGif(output, outGif)
AppendGIFPb.Increment()
AppendGIFPb.Finish()
return err
}
func init() {
if len(os.Args) == 1 || strings.ToUpper(os.Args[1]) == "-H" || strings.ToUpper(os.Args[1]) == "--HELP" {
fmt.Printf(`NAME:
pics-to-gif - 图片转GIF动图
USAGE:
t -f folder [-o out_filename] [-p goroutine]
VERSION:
v0.1.0
ARGS:
-f 图片所在文件夹
-o 输出GIF文件名
-p 并发数
GLOBAL OPTIONS:
--help, -h show help
--version, -v print the version
`)
os.Exit(0)
}
flag.StringVar(&folder, "f", "", "")
flag.StringVar(&outFilename, "o", "out.gif", "")
flag.IntVar(&gorou, "p", 10, "")
flag.Parse()
if folder == "" || outFilename == "" {
log.Fatal(fmt.Sprintf("-f or -o 不能为空"))
}
if gorou <= 0 {
log.Fatal(fmt.Sprintf("-p 必须大于0"))
}
}
func main() {
err := Run(folder, outFilename, gorou)
if err != nil {
log.Fatal(fmt.Sprintf("Err [%s]", err))
}
}