mirror of
https://github.com/sipeed/NanoKVM.git
synced 2026-09-11 00:22:56 -05:00
0e30a26db4
- H.264 WebRTC: Refactored to significantly reduce video latency - H.264 Direct: Optimized data transmission; data parsing now continues correctly even when the tab is in the background - MJPEG: Refactored to ensure the correct data length is sent Bug Fixes - Fixed an issue where certain keyboard modifier keys were not recognized - Fixed vertical mouse cursor drift when the page is zoomed in or out Optimizations - Optimized HID write logic and updated the HID reset mechanism - Added support for deleting images - Added a Swap Memory option to the Tailscale page - Added a confirmation dialog when uninstalling Tailscale to prevent accidental removal - Improved the logic for updating the web page title - Improved the UI for the Clipboard, Settings, Image Mounting, and App Update pages Security - Added a mandatory delay after failed login attempts to prevent brute-force attacks - Updated dependencies to patch known security vulnerabilities
124 lines
2.5 KiB
Go
124 lines
2.5 KiB
Go
package direct
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import (
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"NanoKVM-Server/common"
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"NanoKVM-Server/service/stream"
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"bytes"
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"encoding/binary"
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"sync"
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"sync/atomic"
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"time"
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"github.com/gorilla/websocket"
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log "github.com/sirupsen/logrus"
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)
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type Streamer struct {
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mutex sync.RWMutex
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clients map[*websocket.Conn]bool
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running int32
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}
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func newStreamer() *Streamer {
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return &Streamer{
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clients: make(map[*websocket.Conn]bool),
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}
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}
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func (s *Streamer) addClient(ws *websocket.Conn) {
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s.mutex.Lock()
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s.clients[ws] = true
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s.mutex.Unlock()
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if atomic.CompareAndSwapInt32(&s.running, 0, 1) {
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go s.run()
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log.Debug("h264 stream started")
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}
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}
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func (s *Streamer) removeClient(ws *websocket.Conn) {
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s.mutex.Lock()
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delete(s.clients, ws)
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s.mutex.Unlock()
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log.Debugf("h264 websocket disconnected, remaining clients: %d", len(s.clients))
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}
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func (s *Streamer) getClientCount() int {
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s.mutex.RLock()
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defer s.mutex.RUnlock()
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return len(s.clients)
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}
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func (s *Streamer) run() {
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defer atomic.StoreInt32(&s.running, 0)
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duration := time.Second / time.Duration(120)
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ticker := time.NewTicker(duration)
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defer ticker.Stop()
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screen := common.GetScreen()
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vision := common.GetKvmVision()
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startTime := time.Now()
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for range ticker.C {
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if s.getClientCount() == 0 {
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log.Debug("h264 stream stopped due to no clients")
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return
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}
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data, result := vision.ReadH264(screen.Width, screen.Height, screen.BitRate)
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if result < 0 || len(data) == 0 {
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continue
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}
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isKeyFrame := byte(0)
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if result == 3 {
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isKeyFrame = byte(1)
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}
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timestamp := time.Since(startTime).Microseconds()
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if err := s.send(isKeyFrame, timestamp, data); err != nil {
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continue
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}
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stream.GetFrameRateCounter().Update()
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}
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}
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func (s *Streamer) send(isKeyFrame byte, timestamp int64, data []byte) error {
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buf := BufferPool.Get().(*bytes.Buffer)
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defer BufferPool.Put(buf)
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buf.Reset()
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if err := buf.WriteByte(isKeyFrame); err != nil {
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log.Errorf("failed to write keyframe flag: %s", err)
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return err
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}
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tsBytes := make([]byte, 8)
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binary.LittleEndian.PutUint64(tsBytes, uint64(timestamp))
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if _, err := buf.Write(tsBytes); err != nil {
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log.Errorf("failed to write timestamp: %s", err)
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return err
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}
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if _, err := buf.Write(data); err != nil {
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log.Errorf("failed to write h264 data: %s", err)
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return err
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}
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for client := range s.clients {
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if err := client.WriteMessage(websocket.BinaryMessage, buf.Bytes()); err != nil {
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log.Errorf("failed to write message to client %s: %s.", client.RemoteAddr(), err)
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s.removeClient(client)
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}
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}
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return nil
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}
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