82 lines
2.2 KiB
Go
82 lines
2.2 KiB
Go
package transcoder
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import (
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"fmt"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"time"
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"github.com/spf13/viper"
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"git.metaunix.net/BitGoblin/adept/util"
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)
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type Transcoder struct {
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repo Repository
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}
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// Transcoder object constructor
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func NewTranscoder(r Repository) *Transcoder {
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t := new(Transcoder)
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t.repo = r
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return t
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}
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// Start the main transcoder loop
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func (t *Transcoder) Start() {
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// main program loop - runs infinitely until externally terminated
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for {
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ingestFiles := t.repo.SearchIngest()
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if len(ingestFiles) < 1 {
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log.Println("There were no files found in ingest to transcode; skipping run.")
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} else {
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for _, i := range ingestFiles {
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// check if the file is open in another program (e.g. still being written to)
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if util.IsFileLocked(filepath.Join(t.repo.GetIngestPath(), i.Name())) {
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log.Printf("%s appears to be open in another program; skipping it for this run.", i.Name())
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continue
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}
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// archive file
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t.repo.ArchiveFile(i.Name())
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// transcode file
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t.Transcode(i.Name())
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// clean up source file
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t.repo.CleanupFile(i.Name())
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}
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}
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// sleep for X minutes - specified in the adept.toml config file
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interval := viper.GetInt("transcoder.interval")
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time.Sleep(time.Duration(interval) * time.Minute)
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}
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}
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func (t *Transcoder) Transcode(inFile string) {
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// create ingest and archive paths
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ingestPath := filepath.Join(t.repo.GetIngestPath(), inFile)
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outputPath := filepath.Join(t.repo.GetOutputPath(), inFile)
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log.Printf("Transcoding video file %s.", ingestPath)
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cmd := exec.Command("/usr/bin/ffmpeg",
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"-i", ingestPath,
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"-y",
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"-f", viper.GetString("transcoder.video_format"),
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"-c:v", viper.GetString("transcoder.video_codec"),
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"-s", viper.GetString("transcoder.video_resolution"),
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"-r", viper.GetString("transcoder.video_framerate"),
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"-vf", fmt.Sprintf("format=%s", viper.GetString("transcoder.video_color")),
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"-profile:v", viper.GetString("transcoder.video_profile"),
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"-c:a", viper.GetString("transcoder.audio_codec"),
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outputPath)
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if err := cmd.Run(); err != nil {
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log.Fatalf("Error while transcoding: %s.", err)
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os.Exit(1)
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}
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}
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