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@ -2,6 +2,7 @@ package streamer
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import (
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"bufio"
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"context"
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"fmt"
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"io"
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"live-streamer/config"
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@ -10,22 +11,19 @@ import (
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"os/exec"
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"path/filepath"
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"strings"
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"sync"
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"time"
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)
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type Streamer struct {
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playlist []config.InputItem
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videoList []config.InputItem
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currentVideoIndex int
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cmd *exec.Cmd
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stopped bool
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logFile *os.File
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doneCh chan bool
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mu sync.Mutex
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manualNext bool
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ctx context.Context
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cancel context.CancelFunc
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}
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func NewStreamer(playList []config.InputItem) *Streamer {
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func NewStreamer(videoList []config.InputItem) *Streamer {
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logDir := "logs"
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if err := os.MkdirAll(logDir, 0755); err != nil {
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log.Printf("Error creating log directory: %v\n", err)
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@ -36,23 +34,23 @@ func NewStreamer(playList []config.InputItem) *Streamer {
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log.Fatalf("Error opening log file: %v\n", err)
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}
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return &Streamer{
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playlist: playList,
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videoList: videoList,
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currentVideoIndex: 0,
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cmd: nil,
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logFile: logFile,
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doneCh: make(chan bool, 1),
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ctx: nil,
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}
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}
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func (s *Streamer) Add(videoPath string) {
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s.playlist = append(s.playlist, config.InputItem{Path: videoPath})
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s.videoList = append(s.videoList, config.InputItem{Path: videoPath})
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}
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func (s *Streamer) Remove(videoPath string) {
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for i, item := range s.playlist {
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for i, item := range s.videoList {
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if item.Path == videoPath {
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s.playlist = append(s.playlist[:i], s.playlist[i+1:]...)
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if s.currentVideoIndex >= len(s.playlist) {
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s.videoList = append(s.videoList[:i], s.videoList[i+1:]...)
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if s.currentVideoIndex >= len(s.videoList) {
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s.currentVideoIndex = 0
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}
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if s.currentVideoIndex == i {
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@ -66,15 +64,14 @@ func (s *Streamer) Remove(videoPath string) {
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func (s *Streamer) Prev() {
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s.currentVideoIndex--
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if s.currentVideoIndex < 0 {
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s.currentVideoIndex = len(s.playlist) - 1
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s.currentVideoIndex = len(s.videoList) - 1
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}
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s.start()
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}
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func (s *Streamer) Next() {
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s.manualNext = true
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s.currentVideoIndex++
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if s.currentVideoIndex >= len(s.playlist) {
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if s.currentVideoIndex >= len(s.videoList) {
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s.currentVideoIndex = 0
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}
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s.start()
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@ -82,11 +79,11 @@ func (s *Streamer) Next() {
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func (s *Streamer) Stream() {
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for {
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if len(s.playlist) == 0 {
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if len(s.videoList) == 0 {
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time.Sleep(time.Second)
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continue
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}
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if s.currentVideoIndex >= len(s.playlist) {
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if s.currentVideoIndex >= len(s.videoList) {
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s.currentVideoIndex = 0
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}
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s.start()
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@ -135,21 +132,15 @@ func (s *Streamer) buildFFmpegArgs(videoItem config.InputItem) []string {
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}
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func (s *Streamer) start() {
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defer func() {
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s.cmd = nil
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}()
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if s.cmd != nil && !s.stopped {
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s.Stop()
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}
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s.mu.Lock()
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s.stopped = false
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s.mu.Unlock()
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s.Stop()
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currentVideo := s.playlist[s.currentVideoIndex]
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s.ctx, s.cancel = context.WithCancel(context.Background())
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currentVideo := s.videoList[s.currentVideoIndex]
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videoPath := currentVideo.Path
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log.Println("start stream: ", videoPath)
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s.cmd = exec.Command("ffmpeg", s.buildFFmpegArgs(currentVideo)...)
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s.cmd = exec.CommandContext(s.ctx, "ffmpeg", s.buildFFmpegArgs(currentVideo)...)
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pipe, err := s.cmd.StderrPipe()
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if err != nil {
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@ -165,72 +156,35 @@ func (s *Streamer) start() {
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return
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}
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go func() {
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defer func() {
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if s.logFile != nil {
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if err := s.logFile.Sync(); err != nil {
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log.Printf("syncing log file error: %v\n", err)
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}
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}
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}()
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buf := make([]byte, 1024)
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for {
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n, err := reader.Read(buf)
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if err != nil {
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if err != io.EOF && !s.stopped {
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log.Printf("reading ffmpeg error: %v\n", err)
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}
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break
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}
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if n > 0 {
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timestamp := time.Now().Format("2006-01-02 15:04:05")
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logLine := fmt.Sprintf("[%s] %s", timestamp, string(buf[:n]))
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if s.logFile != nil {
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if _, err := writer.WriteString(logLine); err != nil {
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log.Printf("writing to log file error: %v\n", err)
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}
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if err := writer.Flush(); err != nil {
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log.Printf("flushing writer error: %v\n", err)
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}
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}
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}
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}
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}()
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go s.log(reader, writer)
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go func() {
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err = s.cmd.Wait()
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s.doneCh <- true
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s.mu.Lock()
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defer s.mu.Unlock()
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if err != nil && !s.stopped {
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log.Printf("ffmpeg streaming error: %v\nStart streaming next video\n", err)
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s.Next()
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} else {
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log.Println("ffmpeg streaming stopped")
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if !s.manualNext {
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s.Next()
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}
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select {
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case <-s.ctx.Done():
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log.Println("case <-s.ctx.Done")
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if s.cmd != nil && s.cmd.Process != nil {
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_ = s.cmd.Process.Kill()
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}
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}()
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<-s.doneCh
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case err := <-waitCmd(s.cmd):
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log.Println("case err := <-waitCmd(s.cmd)")
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if err != nil {
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log.Printf("ffmpeg exited with error: %v", err)
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}
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s.Next()
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}
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}
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func (s *Streamer) Stop() {
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if s.cmd != nil && s.cmd.Process != nil {
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s.stopped = true
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_ = s.cmd.Process.Kill()
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<-s.doneCh
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s.cmd = nil
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if s.cancel != nil {
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s.cancel()
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}
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}
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func (s *Streamer) GetCurrentVideo() string {
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return s.playlist[s.currentVideoIndex].Path
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return s.videoList[s.currentVideoIndex].Path
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}
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func (s *Streamer) GetPlaylist() []config.InputItem {
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return s.playlist
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return s.videoList
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}
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func (s *Streamer) Close() {
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@ -239,3 +193,43 @@ func (s *Streamer) Close() {
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s.logFile = nil
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}
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}
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func waitCmd(cmd *exec.Cmd) <-chan error {
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ch := make(chan error, 1)
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go func() {
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ch <- cmd.Wait()
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}()
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return ch
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}
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func (s *Streamer) log(reader *bufio.Reader, writer *bufio.Writer) {
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defer func() {
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if s.logFile != nil {
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if err := s.logFile.Sync(); err != nil {
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log.Printf("syncing log file error: %v\n", err)
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}
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}
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}()
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buf := make([]byte, 1024)
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for {
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n, err := reader.Read(buf)
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if err != nil {
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if err != io.EOF {
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log.Printf("reading ffmpeg error: %v\n", err)
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}
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break
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}
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if n > 0 {
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timestamp := time.Now().Format("2006-01-02 15:04:05")
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logLine := fmt.Sprintf("[%s] %s", timestamp, string(buf[:n]))
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if s.logFile != nil {
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if _, err := writer.WriteString(logLine); err != nil {
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log.Printf("writing to log file error: %v\n", err)
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}
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if err := writer.Flush(); err != nil {
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log.Printf("flushing writer error: %v\n", err)
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}
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}
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}
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}
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}
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