Fix ClearKey live playback by using LocalMediaDrmCallback.

OkHttp cannot fetch data: license URIs, which caused SOURCE_ERROR on DRM channels.

apps/android-tv/app/src/main/java/nl/vonas/mediacluster/tv/playback/PlayerFactory.kt

@@ -16,6 +16,10 @@ import androidx.media3.exoplayer.ExoPlayer
 import androidx.media3.exoplayer.Renderer
 import androidx.media3.exoplayer.audio.AudioRendererEventListener
 import androidx.media3.exoplayer.audio.AudioSink
+import androidx.media3.exoplayer.drm.DefaultDrmSessionManager
+import androidx.media3.exoplayer.drm.DrmSessionManager
+import androidx.media3.exoplayer.drm.FrameworkMediaDrm
+import androidx.media3.exoplayer.drm.LocalMediaDrmCallback
 import androidx.media3.exoplayer.mediacodec.MediaCodecSelector
 import androidx.media3.exoplayer.source.DefaultMediaSourceFactory
 import androidx.media3.exoplayer.trackselection.DefaultTrackSelector
@@ -26,7 +30,8 @@ import androidx.media3.exoplayer.DefaultRenderersFactory.EXTENSION_RENDERER_MODE
 import androidx.media3.exoplayer.DefaultRenderersFactory.EXTENSION_RENDERER_MODE_PREFER
 import okhttp3.OkHttpClient
 import java.util.concurrent.TimeUnit
-
+import nl.vonas.mediacluster.tv.data.ClearKeyEntry
+import nl.vonas.mediacluster.tv.data.DrmInfo
 /**
  * Hardware-video + configureerbare audio.
  * - PCM (standaard): FFmpeg prefer → decode naar PCM (veilig op TV zonder AVR-decoder).
@@ -185,7 +190,7 @@ private val liveOkHttp: OkHttpClient by lazy {
         .build()
 }
 
-/** Live IPTV: TS-first, kleine buffer, lage latency. */
+/** Live IPTV: TS-first, kleine buffer, lage latency. ClearKey via LocalMediaDrmCallback (geen data:-URI). */
 @OptIn(UnstableApi::class)
 fun buildLiveTvPlayer(context: Context): ExoPlayer {
     val appContext = context.applicationContext
@@ -216,9 +221,14 @@ fun buildLiveTvPlayer(context: Context): ExoPlayer {
         .setContentType(C.AUDIO_CONTENT_TYPE_MOVIE)
         .build()
 
+    val mediaSourceFactory = DefaultMediaSourceFactory(dataSourceFactory)
+        .setDrmSessionManagerProvider { mediaItem ->
+            clearKeyDrmSessionManagerFromTag(mediaItem) ?: DrmSessionManager.DRM_UNSUPPORTED
+        }
+
     return ExoPlayer.Builder(appContext, renderersFactory)
         .setTrackSelector(trackSelector)
-        .setMediaSourceFactory(DefaultMediaSourceFactory(dataSourceFactory))
+        .setMediaSourceFactory(mediaSourceFactory)
         .setLoadControl(loadControl)
         .setAudioAttributes(audioAttributes, /* handleAudioFocus = */ true)
         .setHandleAudioBecomingNoisy(true)
@@ -227,11 +237,26 @@ fun buildLiveTvPlayer(context: Context): ExoPlayer {
         .also { it.volume = 1f }
 }
 
+/** ClearKey-keys in MediaItem.tag — OkHttp kan geen data:-license-URI laden. */
+private data class ClearKeyLicenseTag(val json: String)
+
+@OptIn(UnstableApi::class)
+private fun clearKeyDrmSessionManagerFromTag(mediaItem: MediaItem): DrmSessionManager? {
+    val tag = mediaItem.localConfiguration?.tag as? ClearKeyLicenseTag ?: return null
+    val callback = LocalMediaDrmCallback(tag.json.toByteArray(Charsets.UTF_8))
+    return DefaultDrmSessionManager.Builder()
+        .setUuidAndExoMediaDrmProvider(C.CLEARKEY_UUID, FrameworkMediaDrm.DEFAULT_PROVIDER)
+        .setMultiSession(false)
+        .setPlayClearSamplesWithoutKeys(true)
+        .build(callback)
+}
+
 /** TS / HLS / DASH(+ClearKey). */
+@OptIn(UnstableApi::class)
 fun liveMediaItem(
     url: String,
     format: String,
-    drm: nl.vonas.mediacluster.tv.data.DrmInfo? = null,
+    drm: DrmInfo? = null,
 ): MediaItem {
     val isDash = format.equals("dash", ignoreCase = true) ||
         url.contains(".mpd", ignoreCase = true)
@@ -265,23 +290,16 @@ fun liveMediaItem(
     val clearKeys = drm?.takeIf { it.type.equals("clearkey", ignoreCase = true) }?.keys.orEmpty()
     if (clearKeys.isNotEmpty()) {
         val licenseJson = buildClearKeyLicenseJson(clearKeys)
-        val licenseUri =
+        builder
-            "data:application/json;base64," +
+            .setTag(ClearKeyLicenseTag(licenseJson))
-                android.util.Base64.encodeToString(
+            .setDrmConfiguration(
-                    licenseJson.toByteArray(Charsets.UTF_8),
+                MediaItem.DrmConfiguration.Builder(C.CLEARKEY_UUID).build(),
-                    android.util.Base64.NO_WRAP,
+            )
-                )
-        builder.setDrmConfiguration(
-            MediaItem.DrmConfiguration.Builder(C.CLEARKEY_UUID)
-                .setLicenseUri(licenseUri)
-                .setForceDefaultLicenseUri(true)
-                .build(),
-        )
     }
     return builder.build()
 }
 
-private fun buildClearKeyLicenseJson(keys: List<nl.vonas.mediacluster.tv.data.ClearKeyEntry>): String {
+private fun buildClearKeyLicenseJson(keys: List<ClearKeyEntry>): String {
     val arr = org.json.JSONArray()
     for (k in keys) {
         arr.put(
@@ -299,8 +317,15 @@ private fun buildClearKeyLicenseJson(keys: List<nl.vonas.mediacluster.tv.data.Cl
 
 /** ClearKey JSON uses URL-safe base64 without padding. */
 private fun hexToBase64Url(hex: String): String {
-    val clean = hex.trim().removePrefix("0x").replace(Regex("[\\s:\\-]"), "").lowercase()
+    val clean = hex.trim()
-    require(clean.length % 2 == 0) { "ongeldige hex key" }
+        .removePrefix("0x")
+        .removePrefix("0X")
+        .replace("-", "")
+        .replace(Regex("[\\s:]"), "")
+        .lowercase()
+    require(clean.length == 32 && clean.all { it in "0123456789abcdef" }) {
+        "ongeldige ClearKey hex (verwacht 32 tekens): ${hex.take(16)}…"
+    }
     val bytes = ByteArray(clean.length / 2) { i ->
         clean.substring(i * 2, i * 2 + 2).toInt(16).toByte()
     }