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ffmpeg.go
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ffmpeg.go
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package main
import (
"math"
"os"
"os/exec"
"strconv"
"strings"
"time"
)
// ConvertToMp3(*Tasker, Thing, int, *Message)
// Using for convert mp4 to mp3
func ConvertToMp3(T *Tasker, task Thing, try int, message *Message) {
defer new(Timer).Start().Stop()
v := task.Input.(*JsonPls)
select {
case <-T.Branch.Context.Done():
return
default:
}
if GetCtx[bool](T, v.URLSaved+jpg, message) && GetCtx[bool](T, v.URLSaved+mp4, message) && existFile(v.URLSaved+jpg) != "" && existFile(v.URLSaved+mp4) != "" {
if existFile(v.URLSaved+mp3) != "" {
os.Remove(v.URLSaved + mp3)
}
var args []string
args = append(args, "-i")
args = append(args, v.URLSaved+mp4)
args = append(args, "-i")
args = append(args, v.URLSaved+jpg)
args = append(args, "-map")
args = append(args, "0")
args = append(args, "-map")
args = append(args, "1")
args = append(args, "-metadata")
args = append(args, `title=`+v.Song)
args = append(args, "-metadata")
args = append(args, `artist=`+v.Artist)
args = append(args, "-metadata")
args = append(args, `track=`+v.ID)
args = append(args, v.URLSaved+mp3)
err := exec.Command("ffmpeg", args...).Run()
if err != nil {
v.toLog(mp3, true)
if try <= tryingDownload {
ConvertToMp3(T, task, try+1, message)
} else {
message.AddCtx(T, v.URLSaved+mp3, true)
}
} else {
v.toLog(mp3)
message.AddCtx(T, v.URLSaved+mp3, true)
}
}
}
// SplitMp(*Tasker, Thing, int, int64, string, *Message)
// Using for partialing files, if size more than limit
func SplitMp(T *Tasker, task Thing, try int, limit int64, format string, message *Message) {
defer new(Timer).Start().Stop()
v := task.Input.(*JsonPls)
select {
case <-T.Branch.Context.Done():
return
default:
}
if GetCtx[bool](T, v.URLSaved+jpg, message) && GetCtx[bool](T, v.URLSaved+format, message) && existFile(v.URLSaved+jpg) != "" && existFile(v.URLSaved+format) != "" {
var args []string
args = append(args, "-i")
args = append(args, v.URLSaved+format)
args = append(args, "-c")
args = append(args, "copy")
args = append(args, "-map")
args = append(args, "0")
args = append(args, "-segment_time")
args = append(args, FfprobeSize(T, v.URLSaved+format, limit))
args = append(args, "-f")
args = append(args, "segment")
args = append(args, "-reset_timestamps")
args = append(args, "1")
args = append(args, v.URLSaved+"__%04d"+format)
err := exec.Command("ffmpeg", args...).Run()
if err != nil {
v.toLog(format+" fail split", true)
if try <= tryingDownload {
SplitMp(T, task, try+1, limit, format, message)
} else {
}
} else {
v.toLog(format + " split")
for _, val := range searchFiles(v.URLSaved+"__", v.UUID, format) {
message.AddCtx(T, val, true)
}
go func() {
if !debug {
os.Remove(v.URLSaved + jpg)
timeout := false
var notfound = make(chan struct{})
go func() {
for {
select {
case <-T.Branch.Context.Done():
break
default:
if os.Remove(v.URLSaved+format) == nil || timeout {
notfound <- struct{}{}
close(notfound)
return
}
}
}
}()
select {
case <-time.After(10 * time.Minute):
timeout = true
case <-notfound:
}
os.Remove(v.URLSaved + mp4)
os.Remove(v.UUID)
}
}()
}
}
}
// ffprobeSize(*Tasker, string, int64) string
// function use for calc file size
func FfprobeSize(T *Tasker, url string, limit int64) string {
defer new(Timer).Start().Stop()
select {
case <-T.Branch.Context.Done():
return ""
default:
}
var chunks int64
if fileSize(url)/limit != 0 {
chunks = (fileSize(url) / limit) + 1
} else {
chunks = (fileSize(url) / limit)
}
var args []string
args = append(args, "-v")
args = append(args, "error")
args = append(args, "-show_entries")
args = append(args, "format=duration")
args = append(args, "-of")
args = append(args, "default=noprint_wrappers=1:nokey=1")
args = append(args, url)
size, _ := exec.Command("ffprobe", args...).Output()
i, _ := strconv.ParseFloat(strings.TrimSpace(string(size)), 10)
j := int64(math.Round(i)) / chunks
return sprintf("%02d:%02d:%02d", j/3600, (j % 3600 / 60), ((j % 3600) % 60))
}