u
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020f2eea9b
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8634c204f1
@ -108,7 +108,6 @@ func (s *Server) handleWebSocket(c *gin.Context) {
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go func() {
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ticker := time.NewTicker(1 * time.Second)
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for range ticker.C {
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streamer.GlobalStreamer.TruncateOutput()
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currentVideoPath, _ := streamer.GlobalStreamer.GetCurrentVideoPath()
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s.Broadcast(mywebsocket.Date{
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Timestamp: time.Now().UnixMilli(),
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@ -8,22 +8,29 @@ import (
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"io"
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"live-streamer/config"
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"log"
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"math"
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"os/exec"
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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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videoList []config.InputItem
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type playState struct {
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currentVideoIndex int
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manualControl bool
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cmd *exec.Cmd
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ctx context.Context
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cancel context.CancelFunc
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}
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type Streamer struct {
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playStateMu sync.RWMutex
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playState playState
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videoMu sync.RWMutex
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videoList []config.InputItem
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outputMu sync.RWMutex
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output strings.Builder
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manualControl bool
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mu sync.Mutex
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}
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var GlobalStreamer *Streamer
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@ -31,22 +38,25 @@ var GlobalStreamer *Streamer
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func NewStreamer(videoList []config.InputItem) *Streamer {
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GlobalStreamer = &Streamer{
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videoList: videoList,
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currentVideoIndex: 0,
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cmd: nil,
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ctx: nil,
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playState: playState{},
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output: strings.Builder{},
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}
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return GlobalStreamer
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}
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func (s *Streamer) start() {
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s.mu.Lock()
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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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s.playStateMu.Lock()
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s.playState.ctx, s.playState.cancel = context.WithCancel(context.Background())
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currentVideo := s.videoList[s.playState.currentVideoIndex]
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videoPath := currentVideo.Path
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s.cmd = exec.CommandContext(s.ctx, "ffmpeg", s.buildFFmpegArgs(currentVideo)...)
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s.mu.Unlock()
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s.playState.cmd = exec.CommandContext(s.playState.ctx, "ffmpeg", s.buildFFmpegArgs(currentVideo)...)
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cmd := s.playState.cmd
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ctx := s.playState.ctx
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s.playStateMu.Unlock()
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s.writeOutput(fmt.Sprintln("start stream: ", videoPath))
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pipe, err := s.cmd.StderrPipe()
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pipe, err := cmd.StderrPipe()
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if err != nil {
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log.Printf("failed to get pipe: %v", err)
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return
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@ -54,25 +64,29 @@ func (s *Streamer) start() {
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reader := bufio.NewReader(pipe)
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if err := s.cmd.Start(); err != nil {
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if err := cmd.Start(); err != nil {
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s.writeOutput(fmt.Sprintf("starting ffmpeg error: %v\n", err))
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return
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}
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go s.log(reader)
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<-s.ctx.Done()
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<-ctx.Done()
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s.writeOutput(fmt.Sprintf("stop stream: %s\n", videoPath))
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if s.manualControl {
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s.manualControl = false
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s.playStateMu.Lock()
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if s.playState.manualControl {
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// manualing change video, don't increase currentVideoIndex
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s.playState.manualControl = false
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} else {
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// stream next video
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s.currentVideoIndex++
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if s.currentVideoIndex >= len(s.videoList) {
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s.currentVideoIndex = 0
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s.playState.currentVideoIndex++
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s.videoMu.RLock()
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if s.playState.currentVideoIndex >= len(s.videoList) {
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s.playState.currentVideoIndex = 0
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}
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s.videoMu.RUnlock()
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}
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s.playStateMu.Unlock()
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}
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func (s *Streamer) Stream() {
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@ -86,83 +100,123 @@ func (s *Streamer) Stream() {
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}
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func (s *Streamer) Stop() {
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s.mu.Lock()
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defer s.mu.Unlock()
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if s.cancel != nil {
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stopped := make(chan error)
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go func() {
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if s.cmd != nil {
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stopped <- s.cmd.Wait()
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}
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}()
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s.cancel()
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if s.cmd != nil && s.cmd.Process != nil {
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select {
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case <-stopped:
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break
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case <-time.After(3 * time.Second):
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_ = s.cmd.Process.Kill()
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break
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}
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s.cmd = nil
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}
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}
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s.playStateMu.Lock()
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cancel := s.playState.cancel
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cmd := s.playState.cmd
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s.playState.cancel = nil
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s.playState.cmd = nil
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s.playStateMu.Unlock()
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if cancel == nil || cmd == nil {
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return
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}
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func (s *Streamer) writeOutput(str string) {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.output.WriteString(str)
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stopped := make(chan error, 1)
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go func() {
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if cmd.Process != nil {
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stopped <- cmd.Wait()
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} else {
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stopped <- nil
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}
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}()
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cancel()
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if cmd.Process != nil {
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select {
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case <-stopped:
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case <-time.After(3 * time.Second):
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_ = cmd.Process.Kill()
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}
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close(stopped)
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}
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}
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func (s *Streamer) Add(videoPath string) {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.videoMu.Lock()
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defer s.videoMu.Unlock()
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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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s.mu.Lock()
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defer s.mu.Unlock()
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var needStop bool // removed video is current playing
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var removeIndex int = -1
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s.videoMu.Lock()
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for i, item := range s.videoList {
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if item.Path == videoPath {
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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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s.Stop()
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}
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removeIndex = i
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s.playStateMu.RLock()
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needStop = (s.playState.currentVideoIndex == i)
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s.playStateMu.RUnlock()
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break
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}
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}
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if removeIndex >= 0 && removeIndex < len(s.videoList) {
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oldLen := len(s.videoList)
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s.videoList = append(s.videoList[:removeIndex], s.videoList[removeIndex+1:]...)
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s.playStateMu.Lock()
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if s.playState.currentVideoIndex >= oldLen-1 {
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s.playState.currentVideoIndex = 0
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}
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s.playStateMu.Unlock()
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}
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s.videoMu.Unlock()
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if needStop {
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s.Stop()
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}
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}
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func (s *Streamer) Prev() {
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s.mu.Lock()
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s.manualControl = true
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s.currentVideoIndex--
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if s.currentVideoIndex < 0 {
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s.currentVideoIndex = len(s.videoList) - 1
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s.videoMu.RLock()
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videoLen := len(s.videoList)
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if videoLen == 0 {
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return
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}
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s.mu.Unlock()
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s.videoMu.RUnlock()
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s.playStateMu.Lock()
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s.playState.manualControl = true
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s.playState.currentVideoIndex--
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if s.playState.currentVideoIndex < 0 {
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s.playState.currentVideoIndex = videoLen - 1
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}
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s.playStateMu.Unlock()
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s.Stop()
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}
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func (s *Streamer) Next() {
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s.mu.Lock()
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s.manualControl = true
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s.currentVideoIndex++
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if s.currentVideoIndex >= len(s.videoList) {
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s.currentVideoIndex = 0
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s.videoMu.RLock()
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videoLen := len(s.videoList)
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if videoLen == 0 {
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return
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}
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s.mu.Unlock()
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s.videoMu.RUnlock()
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s.playStateMu.Lock()
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s.playState.manualControl = true
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s.playState.currentVideoIndex++
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if s.playState.currentVideoIndex >= videoLen {
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s.playState.currentVideoIndex = 0
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}
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s.playStateMu.Unlock()
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s.Stop()
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}
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func (s *Streamer) log(reader *bufio.Reader) {
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s.playStateMu.RLock()
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ctx := s.playState.ctx
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s.playStateMu.RUnlock()
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select {
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case <-s.ctx.Done():
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case <-ctx.Done():
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return
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default:
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if !config.GlobalConfig.Log.PlayState {
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@ -187,23 +241,23 @@ func (s *Streamer) log(reader *bufio.Reader) {
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}
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func (s *Streamer) GetCurrentVideoPath() (string, error) {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.videoMu.RLock()
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defer s.videoMu.RUnlock()
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if len(s.videoList) == 0 {
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return "", errors.New("no video streaming")
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}
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return s.videoList[s.currentVideoIndex].Path, nil
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return s.videoList[s.GetCurrentIndex()].Path, nil
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}
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func (s *Streamer) GetVideoList() []config.InputItem {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.videoMu.RLock()
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defer s.videoMu.RUnlock()
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return s.videoList
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}
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func (s *Streamer) GetVideoListPath() []string {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.videoMu.RLock()
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defer s.videoMu.RUnlock()
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var videoList []string
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for _, item := range s.videoList {
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videoList = append(videoList, item.Path)
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@ -212,30 +266,23 @@ func (s *Streamer) GetVideoListPath() []string {
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}
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func (s *Streamer) GetCurrentIndex() int {
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s.mu.Lock()
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defer s.mu.Unlock()
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return s.currentVideoIndex
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s.playStateMu.RLock()
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defer s.playStateMu.RUnlock()
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return s.playState.currentVideoIndex
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}
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func (s *Streamer) writeOutput(str string) {
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s.outputMu.Lock()
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defer s.outputMu.Unlock()
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s.output.WriteString(str)
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}
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func (s *Streamer) GetOutput() string {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.outputMu.RLock()
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defer s.outputMu.RUnlock()
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return s.output.String()
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}
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func (s *Streamer) TruncateOutput() int {
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s.mu.Lock()
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defer s.mu.Unlock()
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currentSize := s.output.Len()
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if currentSize > math.MaxInt {
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newStart := currentSize - math.MaxInt
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trimmedOutput := s.output.String()[newStart:]
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s.output.Reset()
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s.output.WriteString(trimmedOutput)
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}
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return currentSize
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}
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func (s *Streamer) Close() {
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s.Stop()
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}
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