225 lines
6.3 KiB
Go
225 lines
6.3 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"git.gammaspectra.live/S.O.N.G/Ignite/encoder/libaom"
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"git.gammaspectra.live/S.O.N.G/Ignite/frame"
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"git.gammaspectra.live/S.O.N.G/Ignite/utilities/frameserver"
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"log"
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"math"
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"os"
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"path"
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"runtime"
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"strings"
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"sync"
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"sync/atomic"
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"time"
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)
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func main() {
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y4mInput := flag.String("input", "", ".y4m input stream")
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outputFolder := flag.String("output", "", "Output folder")
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maximumSceneLength := flag.Uint64("max-scene-len", 240, "Maximum scene length")
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minimumSceneLength := flag.Uint64("min-scene-len", 24, "Minimum scene length")
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workerNumberOption := flag.Uint64("workers", 0, "Number of workers to spawn [0 = automatic]")
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videoParams := flag.String("video-params", "", "Extra parameters for video encoder. This can also be used to override defaults.")
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flag.Parse()
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if *minimumSceneLength < 2 {
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log.Panic("min-scene-len < 2")
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}
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if *maximumSceneLength < *minimumSceneLength {
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log.Panic("max-scene-len < min-scene-len")
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}
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if i, err := os.Stat(*y4mInput); err != nil || i.IsDir() {
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log.Panicf("%s must exist and be a file", *y4mInput)
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}
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if i, err := os.Stat(*y4mInput); err != nil || i.IsDir() {
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log.Panicf("input = %s must exist and be a file", *y4mInput)
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}
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if i, err := os.Stat(*outputFolder); err != nil || !i.IsDir() {
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log.Panicf("output = %s must exist and be a directory", *y4mInput)
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}
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frameServerPool := frameserver.NewPool(*y4mInput, nil)
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allFrames := frameServerPool.GetAllFrames()
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if allFrames == nil {
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log.Panicf("could not open %s", *y4mInput)
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}
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prop := allFrames.Properties()
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colorRange := "tv/partial"
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if prop.FullColorRange {
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colorRange = "pc/full"
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}
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log.Printf("input %s : %dx%d (PAR %s) (FPS %s %.04f) %s %s", *y4mInput, prop.Width, prop.Height, prop.PixelAspectRatio.String(), prop.FrameRate.String(), prop.FrameRate.Float64(), prop.ColorSpace.String(), colorRange)
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frameCount := 0
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scenes := make([]int, 1, 4096)
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//pre-process offsets
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for f := range allFrames.Channel() {
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//todo: scenecut detection
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_ = f
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log.Printf("processing frame %d/???", frameCount)
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if (frameCount - scenes[len(scenes)-1]) >= int(*maximumSceneLength) {
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scenes = append(scenes, frameCount)
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}
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frameCount++
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}
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//add last entry
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scenes = append(scenes, frameCount)
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log.Printf("input %s : %d total frames, %d scenes", *y4mInput, frameCount, len(scenes)-1)
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//todo: save seekTable
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var wg sync.WaitGroup
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var framesEncoded atomic.Uint64
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workerNumber := uint64(runtime.NumCPU())
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if *workerNumberOption != 0 {
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workerNumber = *workerNumberOption
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}
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//max one worker per scene, use this to bump threads
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if uint64(len(scenes)-1) < workerNumber {
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workerNumber = uint64(len(scenes) - 1)
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}
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workerChannel := make(chan struct{}, workerNumber)
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for i := uint64(0); i < workerNumber; i++ {
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workerChannel <- struct{}{}
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}
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defaultParams := getDefaultParameters(prop, int(workerNumber))
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for _, p := range strings.Split(*videoParams, "") {
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splits := strings.Split(p, "=")
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if len(splits) > 1 {
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defaultParams[splits[0]] = strings.Trim(strings.Join(splits[1:], "="), "'\"")
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} else {
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defaultParams[splits[0]] = 1
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}
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}
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wg.Add(1)
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go func() {
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defer wg.Done()
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startTime := time.Now()
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for {
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encoded := framesEncoded.Load()
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if encoded > 0 {
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//todo: take into account lag-in-frames (start counting after workers * lag-in-frames setting)
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timeTaken := time.Now().Sub(startTime)
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timePerFrame := timeTaken / time.Duration(encoded)
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timeLeft := timePerFrame * time.Duration(uint64(frameCount)-encoded)
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log.Printf("encoded %d/%d frames, %.03f%%, ~%.01f seconds left @ rate ~%.03f fps", encoded, frameCount, float64(encoded*100)/float64(frameCount), timeLeft.Seconds(), 1/timePerFrame.Seconds())
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}
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if encoded >= uint64(frameCount) {
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break
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}
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time.Sleep(time.Second * 1)
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}
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}()
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for index, startFrameNumber := range scenes[:len(scenes)-1] {
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//todo: make this streamable
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endFrameNumber := scenes[index+1]
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//take lock
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<-workerChannel
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wg.Add(1)
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go func(index, startFrameNumber, endFrameNumber int) {
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defer wg.Done()
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defer func() {
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//return lock
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workerChannel <- struct{}{}
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}()
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outputPath := path.Join(*outputFolder, fmt.Sprintf("scene_%d_%d_%d.ivf", index, startFrameNumber, endFrameNumber-1))
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if f, err := os.Create(outputPath); err != nil {
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log.Panicf("could not create %s: %s", outputPath, err.Error())
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} else {
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defer f.Close()
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settings := make(map[string]any)
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for k, v := range defaultParams {
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settings[k] = v
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}
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stream := frameServerPool.GetFrames(startFrameNumber, endFrameNumber)
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if encoder, err := libaom.NewEncoder(f, stream.Properties(), settings); err != nil {
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log.Panicf("could not create encoder for %s: %s", outputPath, err.Error())
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} else {
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defer encoder.Close()
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frameNumber := 0
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for f := range stream.Channel() {
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if err = encoder.Encode(f); err != nil {
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log.Panicf("error while encoding %s at frame %d: %s", outputPath, frameNumber, err.Error())
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}
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//log.Printf("scene %d: encoded %d/%d", index, frameNumber+1, endFrameNumber-startFrameNumber)
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frameNumber++
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framesEncoded.Add(1)
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}
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if err = encoder.Flush(); err != nil {
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log.Panicf("error while flushing %s: %s", outputPath, err.Error())
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}
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}
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}
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}(index, startFrameNumber, endFrameNumber)
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}
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wg.Wait()
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}
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func getDefaultParameters(properties frame.StreamProperties, workerNumber int) map[string]any {
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defaultParams := make(map[string]any)
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defaultParams["row-mt"] = 1
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defaultParams["frame-parallel"] = 1
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defaultParams["cpu-used"] = 6
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//crf
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defaultParams["end-usage"] = "q"
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defaultParams["cq-level"] = 30
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threadCount := runtime.NumCPU() / workerNumber
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if threadCount < 1 {
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threadCount = 1
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}
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defaultParams["threads"] = threadCount
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//todo: maybe change to thread-independent method? example below
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/*
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tilesHorizontal := utilities.Max((properties.Width-1)/720, 1)
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tilesVertical := utilities.Max((properties.Height-1)/720, 1)
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defaultParams["tile-columns"] = utilities.Log2(tilesHorizontal)
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defaultParams["tile-rows"] = utilities.Log2(tilesVertical)
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*/
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if threadCount <= 6 {
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defaultParams["tile-columns"] = 2
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defaultParams["tile-rows"] = 1
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} else {
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po2 := math.Log2(float64(threadCount))
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_ = po2
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defaultParams["tile-columns"] = int(math.Ceil(po2 * 0.75))
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defaultParams["tile-rows"] = int(math.Ceil(po2 * 0.25))
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}
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return defaultParams
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}
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