feat: Voice Gateway v8

src/client/voice/player/MediaPlayer.js

@@ -20,7 +20,7 @@ Please use the @dank074/discord-video-stream library for the best support.
 const EventEmitter = require('events');
 const { Readable: ReadableStream } = require('stream');
 const prism = require('prism-media');
-const { H264NalSplitter } = require('./processing/AnnexBNalSplitter');
+const { H264NalSplitter, H265NalSplitter } = require('./processing/AnnexBNalSplitter');
 const { IvfTransformer } = require('./processing/IvfSplitter');
 const { H264Dispatcher } = require('../dispatcher/AnnexBDispatcher');
 const AudioDispatcher = require('../dispatcher/AudioDispatcher');
@@ -62,6 +62,19 @@ const FFMPEG_H264_ARGUMENTS = options => [
   'h264_metadata=aud=insert',
 ];
 
+const FFMPEG_H265_ARGUMENTS = options => [
+  '-c:v',
+  'libx265',
+  '-f',
+  'hevc',
+  '-preset',
+  options?.presetH265 || 'faster',
+  '-profile:v',
+  'main',
+  '-bf',
+  '0',
+];
+
 /**
  * Player for a Voice Connection.
  * @private
@@ -188,15 +201,19 @@ class MediaPlayer extends EventEmitter {
     }
 
     // Get stream type
-    if (this.voiceConnection.videoCodec == 'VP8') {
+    if (this.voiceConnection.videoCodec === 'VP8') {
       args.push(...FFMPEG_VP8_ARGUMENTS);
       // Remove  '-speed', '5' bc bad quality
     }
 
-    if (this.voiceConnection.videoCodec == 'H264') {
+    if (this.voiceConnection.videoCodec === 'H264') {
       args.push(...FFMPEG_H264_ARGUMENTS(options));
     }
 
+    if (this.voiceConnection.videoCodec === 'H265') {
+      args.push(...FFMPEG_H265_ARGUMENTS(options));
+    }
+
     args.push('-force_key_frames', '00:02');
 
     if (options?.inputFFmpegArgs) {
@@ -229,7 +246,7 @@ class MediaPlayer extends EventEmitter {
         return this.playAnnexBVideo(ffmpeg, options, streams, 'H264');
       }
       default: {
-        throw new Error('Invalid codec (Supported: VP8, H264)');
+        throw new Error('Invalid codec (Supported: VP8, H264, H265)');
       }
     }
   }
@@ -247,7 +264,12 @@ class MediaPlayer extends EventEmitter {
   // eslint-disable-next-line no-unused-vars
   playAnnexBVideo(stream, options, streams, type) {
     this.destroyVideoDispatcher();
-    const videoStream = new H264NalSplitter();
+    let videoStream;
+    if (type === 'H264') {
+      videoStream = new H264NalSplitter();
+    } else if (type === 'H265') {
+      videoStream = new H265NalSplitter();
+    }
     stream.pipe(videoStream);
     streams.video = videoStream;
     const dispatcher = this.createVideoDispatcher(options, streams);

src/client/voice/player/processing/PCMInsertSilence.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const { Buffer } = require('node:buffer');
+const { Transform } = require('node:stream');
+
+class PCMInsertSilence extends Transform {
+  constructor(options) {
+    super(options);
+    // 48Khz, 2 channels, 16-bit (2 bytes per channel)
+    this.sampleRate = 48000;
+    this.channels = 2;
+    // 4 bytes per frame (2 channels * 2 bytes)
+    this.bytesPerFrame = this.channels * 2;
+    this.lastChunkTime = Date.now();
+    this.silenceThresholdMs = 50;
+  }
+
+  _transform(chunk, encoding, callback) {
+    const now = Date.now();
+    const gap = now - this.lastChunkTime;
+
+    if (gap >= this.silenceThresholdMs) {
+      const missingFrames = Math.floor((gap / 1000) * this.sampleRate);
+      const silenceBuffer = Buffer.alloc(missingFrames * this.bytesPerFrame, 0);
+      this.push(silenceBuffer);
+    }
+
+    this.lastChunkTime = now;
+
+    this.push(chunk);
+    callback();
+  }
+}
+
+module.exports = {
+  PCMInsertSilence,
+};