Sorry for the translation (google translate).
Thanks to Erel for his new version of Exoplayer 1.50, without which it would not be possible to do so.
After much testing I have found a way to read the song title directly from the exoplayer stream (IcyInfo).
Surely the code can be improved since Java is rather fair. But it works for me correctly in my radio app.
The Java class is copied from the internet and adjusted by me.
Java class:
It has 3 functions:
- Function to name the event to send the data.
- Function to send the data (in the same page of the java class).
- Function that ExoPlayer assigns and receives metadata.
In B4X code :
Thanks to Erel for his new version of Exoplayer 1.50, without which it would not be possible to do so.
After much testing I have found a way to read the song title directly from the exoplayer stream (IcyInfo).
Surely the code can be improved since Java is rather fair. But it works for me correctly in my radio app.
The Java class is copied from the internet and adjusted by me.
Java class:
It has 3 functions:
- Function to name the event to send the data.
- Function to send the data (in the same page of the java class).
- Function that ExoPlayer assigns and receives metadata.
B4X:
#if java
import anywheresoftware.b4a.keywords.Common;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import com.google.android.exoplayer2.metadata.icy.IcyInfo;
import com.google.android.exoplayer2.metadata.icy.IcyHeaders;
import com.google.android.exoplayer2.metadata.Metadata;
import com.google.android.exoplayer2.metadata.MetadataOutput;
import com.google.android.exoplayer2.SimpleExoPlayer;
import android.content.Context;
public static class IcyInfoMetaData {
private Map<String, List<String>> headers;
public SimpleExoPlayer ExoPlayer;
public String NombreEvento;
public String Titulo;
// Poner nombre al evento que devuelve titulo
public void PonerNombreEvento(String EventName) throws IOException {
NombreEvento = EventName;
}
// Enviar titulo a B4A en mi caso Sub CancionCambiada_Fire(Value As String) en pagina Main
public void NotificarTituloCambiado(String txt) throws IOException {
processBA.raiseEventFromUI(this, NombreEvento.toLowerCase(BA.cul) + "_fire", txt);
}
// Asignar ExoPlayer y recoger metadata
public void AsignarExoPlayer(SimpleExoPlayer Exo) throws IOException {
SimpleExoPlayer ExoPlayer = Exo;
ExoPlayer.addMetadataOutput(new MetadataOutput() {
public void onMetadata(Metadata metadata) {
for (int i = 0; i < metadata.length(); i++) {
Metadata.Entry entry = metadata.get(i);
//Aqui se leen titulo y url
if (entry instanceof IcyInfo){
IcyInfo icyInfo = ((IcyInfo) entry);
BA.Log("Titulo = " + icyInfo.title);
BA.Log("Url = " + icyInfo.url);
try {
NotificarTituloCambiado(icyInfo.title);//devolver titulo a B4A
} catch(Exception e) {
BA.Log("ERROR");
}//catch
}//IcyInfo
//Esta parte no se ejecuta nunca
if (entry instanceof IcyHeaders) {
IcyHeaders icyHeaders = ((IcyHeaders) entry);
BA.Log("IcyHeaders nombre " + icyHeaders.name);
BA.Log("IcyHeaders genero " + icyHeaders.genre);
}//IcyHeaders
}//for
}//onmetadata
});//addMetadataOutput
}//AsignarExoPlayer
}//class IcyInfoMetaData
#End IfIn B4X code :
B4X:
Public streamMeta As JavaObject'global variable
Dim jo As JavaObject
'Initialize the class
streamMeta = jo.InitializeNewInstance(Application.PackageName & ".main$IcyInfoMetaData", Null)
'name the event
streamMeta.RunMethod("PonerNombreEvento",Array As String("CancionCambiada"))
Exo1.Initialize("mp1")'Initialize ExoPlayer
Dim jo As JavaObject = Exo1
'assign exoplayer after nitialize
streamMeta.RunMethod("AsignarExoPlayer",Array As Object(jo.GetField("player")))
'Sub that receives the data (in the same page of the java class).
Sub CancionCambiada_Fire(Value As String)
Log($"Titulo = ${Value}"$)
if Value="" Then Value = "Sin informacion"
LabelTitle.Text = Value
End Sub
