java.lang.IllegalStateException: Error from decoder 16394

[munishkhatri720]

• Error Logs :

11|basic  | 2024-12-23T05:21:35.621Z ERROR 3221009 --- [Lavalink] [-1-thread-61750] c.s.d.l.t.p.LocalAudioTrackExecutor      : Error in playback of 4WMHDpmfuLwM2Ty8KQXZjN
11|basic  | com.sedmelluq.discord.lavaplayer.tools.FriendlyException: Something went wrong when decoding the track.
11|basic  |     at com.sedmelluq.discord.lavaplayer.tools.ExceptionTools.wrapUnfriendlyExceptions(ExceptionTools.java:45) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.track.playback.LocalAudioTrackExecutor.executeProcessingLoop(LocalAudioTrackExecutor.java:279) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.track.playback.LocalAudioTrackExecutor.executeProcessingLoop(LocalAudioTrackExecutor.java:234) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.container.mpeg.MpegAudioTrack.process(MpegAudioTrack.java:52) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.track.DelegatedAudioTrack.processDelegate(DelegatedAudioTrack.java:25) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.github.topi314.lavasrc.saavn.SaavnAudioTrack.process(SaavnAudioTrack.java:89) ~[lavasrc-plugin-c5386f5.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.track.DelegatedAudioTrack.processDelegate(DelegatedAudioTrack.java:25) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.github.topi314.lavasrc.mirror.MirroringAudioTrack.process(MirroringAudioTrack.java:55) ~[lavasrc-plugin-c5386f5.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.track.playback.LocalAudioTrackExecutor.execute(LocalAudioTrackExecutor.java:109) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.player.DefaultAudioPlayerManager.lambda$executeTrack$2(DefaultAudioPlayerManager.java:339) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[na:na]
11|basic  |     at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[na:na]
11|basic  |     at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]
11|basic  | Caused by: java.lang.IllegalStateException: Error from decoder 16394
11|basic  |     at com.sedmelluq.discord.lavaplayer.natives.aac.AacDecoder.decode(AacDecoder.java:209) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.container.common.AacPacketRouter.processInput(AacPacketRouter.java:57) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.container.mpeg.MpegAacTrackConsumer.consume(MpegAacTrackConsumer.java:79) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.container.mpeg.reader.standard.MpegStandardFileTrackProvider.provideFrames(MpegStandardFileTrackProvider.java:75) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     at com.sedmelluq.discord.lavaplayer.track.playback.LocalAudioTrackExecutor.executeProcessingLoop(LocalAudioTrackExecutor.java:261) ~[lavaplayer-2.2.2.jar!/:na]
11|basic  |     ... 11 common frames omitted

• Track Link :
  Spotify : https://open.spotify.com/track/4WMHDpmfuLwM2Ty8KQXZjN
  Actual Media URl : https://aac.saavncdn.com/201/f2472e5f1e27a80b11773e88628dc06e_320.mp4

• Steps to Reproduce:
  1. Play this Spotify link without seeking the track. The stream automatically dies at the 0:44 timestamp and only occurs for tracks mirrored through JioSaavn.
  2. If I play the actual media URL as an HTTP track via my bot, it plays fine. This issue only occurs when the tracks are mirrored through JioSaavn.
  3. The media file extension is .mp4, so I used an MpegAudioTrack.

• SaavnAudioTrack.java:

package com.github.topi314.lavasrc.saavn;
import com.github.topi314.lavasrc.ExtendedAudioTrack;
import com.github.topi314.lavasrc.LavaSrcTools;
import com.sedmelluq.discord.lavaplayer.container.mpeg.MpegAudioTrack;
import com.sedmelluq.discord.lavaplayer.source.AudioSourceManager;
import com.sedmelluq.discord.lavaplayer.tools.FriendlyException;
import com.sedmelluq.discord.lavaplayer.tools.JsonBrowser;
import com.sedmelluq.discord.lavaplayer.tools.io.PersistentHttpStream;
import com.sedmelluq.discord.lavaplayer.track.AudioTrack;
import com.sedmelluq.discord.lavaplayer.track.AudioTrackInfo;
import com.sedmelluq.discord.lavaplayer.track.playback.LocalAudioTrackExecutor;
import org.apache.http.client.methods.HttpGet;
import java.net.URI;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class SaavnAudioTrack extends ExtendedAudioTrack {
    private static final String ALGORITHM = "DES/ECB/PKCS5Padding";
    
	private final SaavnAudioSourceManager sourceManager;

	public SaavnAudioTrack(AudioTrackInfo trackInfo, SaavnAudioSourceManager sourceManager) {
		this(trackInfo, null, null, null, null, null, false, sourceManager);
	}

	public SaavnAudioTrack(AudioTrackInfo trackInfo, String albumName, String albumUrl, String artistUrl, String artistArtworkUrl, String previewUrl, boolean isPreview, SaavnAudioSourceManager sourceManager) {
		super(trackInfo, albumName, albumUrl, artistUrl, artistArtworkUrl, previewUrl, isPreview);
		this.sourceManager = sourceManager;
	}
    
    public static String decryptUrl(String url) throws Exception {
		String key = "38346591";
		byte[] encryptedBytes = Base64.getDecoder().decode(url);
        SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "DES");
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, keySpec);
        byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
        return new String(decryptedBytes);

       

	}

	private URI getTrackMediaURI() throws Exception {
		var data = new HttpGet(SaavnAudioSourceManager.MEDIA_API_BASE + this.getIdentifier());
		
		var json = LavaSrcTools.fetchResponseAsJson(this.sourceManager.getHttpInterface(), data);

		this.checkResponse(json, "Failed to get track details: ");
		var track_data = json.get(this.getIdentifier());
		var encrypted_media_url = track_data.get("encrypted_media_url").text();

		var playback_url = decryptUrl(encrypted_media_url);

		if (track_data.get("320kbps").asBoolean(false)) {
			playback_url = playback_url.replace("_96.mp4", "_320.mp4");
		} 

		System.out.println(playback_url);

		return new URI(playback_url);
		
	}

	private void checkResponse(JsonBrowser json, String message) throws IllegalStateException {
		if (json == null) {
			throw new IllegalStateException(message + "No response");
		}
		if (json.get(this.getIdentifier()).isNull()) {
			throw new IllegalStateException(message + "No track found");
		}
		
	}

	
	@Override
	public void process(LocalAudioTrackExecutor executor) throws Exception {
		try (var httpInterface = this.sourceManager.getHttpInterface()) {
			if (this.isPreview) {
				if (this.previewUrl == null) {
					throw new FriendlyException("No preview url found", FriendlyException.Severity.COMMON, new IllegalArgumentException());
				}
				try (var stream = new PersistentHttpStream(httpInterface, new URI(this.previewUrl), this.trackInfo.length)) {
					processDelegate(new MpegAudioTrack(this.trackInfo, stream), executor);
				}
			} else {
				try (var stream = new PersistentHttpStream(httpInterface, this.getTrackMediaURI(), this.trackInfo.length)) {
					processDelegate(new MpegAudioTrack(this.trackInfo, stream), executor);
				}
			}
		}
	}

	@Override
	protected AudioTrack makeShallowClone() {
		return new SaavnAudioTrack(this.trackInfo, this.albumName, this.albumUrl, this.artistUrl, this.artistArtworkUrl, this.previewUrl, this.isPreview, this.sourceManager);
	}

	@Override
	public AudioSourceManager getSourceManager() {
		return this.sourceManager;
	}

}

{
    "streams": [
        {
            "index": 0,
            "codec_name": "aac",
            "codec_long_name": "AAC (Advanced Audio Coding)",
            "profile": "LC",
            "codec_type": "audio",
            "codec_tag_string": "mp4a",
            "codec_tag": "0x6134706d",
            "sample_fmt": "fltp",
            "sample_rate": "44100",
            "channels": 2,
            "channel_layout": "stereo",
            "bits_per_sample": 0,
            "initial_padding": 0,
            "id": "0x1",
            "r_frame_rate": "0/0",
            "avg_frame_rate": "0/0",
            "time_base": "1/44100",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 12708562,
            "duration": "288.176009",
            "bit_rate": "325074",
            "nb_frames": "12412",
            "extradata_size": 5,
            "disposition": {
                "default": 1,
                "dub": 0,
                "original": 0,
                "comment": 0,
                "lyrics": 0,
                "karaoke": 0,
                "forced": 0,
                "hearing_impaired": 0,
                "visual_impaired": 0,
                "clean_effects": 0,
                "attached_pic": 0,
                "timed_thumbnails": 0,
                "non_diegetic": 0,
                "captions": 0,
                "descriptions": 0,
                "metadata": 0,
                "dependent": 0,
                "still_image": 0
            },
            "tags": {
                "language": "und",
                "handler_name": "SoundHandler",
                "vendor_id": "[0][0][0][0]"
            }
        }
    ],
    "format": {
        "filename": "https://aac.saavncdn.com/201/f2472e5f1e27a80b11773e88628dc06e_320.mp4",
        "nb_streams": 1,
        "nb_programs": 0,
        "nb_stream_groups": 0,
        "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
        "format_long_name": "QuickTime / MOV",
        "start_time": "0.000000",
        "duration": "288.176009",
        "size": "11761419",
        "bit_rate": "326506",
        "probe_score": 100,
        "tags": {
            "major_brand": "isom",
            "minor_version": "512",
            "compatible_brands": "isomiso2mp41",
            "encoder": "Lavf57.82.101"
        }
    }
}