Further extended HLS spec that is implemented.

app/src/main/java/com/futo/platformplayer/Extensions_Syntax.kt

@@ -1,5 +1,10 @@
 package com.futo.platformplayer
 
+import android.net.Uri
+import java.net.URI
+import java.net.URISyntaxException
+import java.net.URLEncoder
+
 //Syntax sugaring
 inline fun <reified T> Any.assume(): T?{
     if(this is T)
@@ -16,4 +21,25 @@ inline fun <reified T, R> Any.assume(cb: (T) -> R): R? {
 
 fun String?.yesNoToBoolean(): Boolean {
     return this?.uppercase() == "YES"
+}
+
+fun String?.toURIRobust(): URI? {
+    if (this == null) {
+        return null
+    }
+
+    try {
+        return URI(this)
+    } catch (e: URISyntaxException) {
+        val parts = this.split("\\?".toRegex(), 2)
+        if (parts.size < 2) {
+            return null
+        }
+
+        val beforeQuery = parts[0]
+        val query = parts[1]
+        val encodedQuery = URLEncoder.encode(query, "UTF-8")
+        val rebuiltUrl = "$beforeQuery?$encodedQuery"
+        return URI(rebuiltUrl)
+    }
 }

app/src/main/java/com/futo/platformplayer/casting/StateCasting.kt

@@ -361,13 +361,13 @@ class StateCasting {
             else if (audioSource is IAudioUrlSource)
                 ad.loadVideo(if (video.isLive) "LIVE" else "BUFFERED", audioSource.container, audioSource.getAudioUrl(), resumePosition, video.duration.toDouble());
             else if(videoSource is IHLSManifestSource) {
-                if (ad is ChromecastCastingDevice) {
+                if (ad is ChromecastCastingDevice && video.isLive) {
                     castHlsIndirect(video, videoSource.url, resumePosition);
                 } else {
                     ad.loadVideo(if (video.isLive) "LIVE" else "BUFFERED", videoSource.container, videoSource.url, resumePosition, video.duration.toDouble());
                 }
             } else if(audioSource is IHLSManifestAudioSource) {
-                if (ad is ChromecastCastingDevice) {
+                if (ad is ChromecastCastingDevice && video.isLive) {
                     castHlsIndirect(video, audioSource.url, resumePosition);
                 } else {
                     ad.loadVideo(if (video.isLive) "LIVE" else "BUFFERED", audioSource.container, audioSource.url, resumePosition, video.duration.toDouble());
@@ -578,7 +578,7 @@ class StateCasting {
             val masterPlaylist = HLS.downloadAndParseMasterPlaylist(_client, sourceUrl)
             val newVariantPlaylistRefs = arrayListOf<HLS.VariantPlaylistReference>()
             val newMediaRenditions = arrayListOf<HLS.MediaRendition>()
-            val newMasterPlaylist = HLS.MasterPlaylist(newVariantPlaylistRefs, newMediaRenditions, masterPlaylist.independentSegments)
+            val newMasterPlaylist = HLS.MasterPlaylist(newVariantPlaylistRefs, newMediaRenditions, masterPlaylist.sessionDataList, masterPlaylist.independentSegments)
 
             for (variantPlaylistRef in masterPlaylist.variantPlaylistsRefs) {
                 val playlistId = UUID.randomUUID();
@@ -606,15 +606,17 @@ class StateCasting {
                 val newPlaylistPath = "/hls-playlist-${playlistId}"
                 val newPlaylistUrl = url + newPlaylistPath;
 
-                _castServer.addHandler(HttpFuntionHandler("GET", newPlaylistPath) { vpContext ->
+                if (mediaRendition.uri != null) {
-                    val vpHeaders = vpContext.headers.clone()
+                    _castServer.addHandler(HttpFuntionHandler("GET", newPlaylistPath) { vpContext ->
-                    vpHeaders["Content-Type"] = "application/vnd.apple.mpegurl";
+                        val vpHeaders = vpContext.headers.clone()
+                        vpHeaders["Content-Type"] = "application/vnd.apple.mpegurl";
 
-                    val variantPlaylist = HLS.downloadAndParseVariantPlaylist(_client, mediaRendition.uri)
+                        val variantPlaylist = HLS.downloadAndParseVariantPlaylist(_client, mediaRendition.uri)
-                    val proxiedVariantPlaylist = proxyVariantPlaylist(url, playlistId, variantPlaylist)
+                        val proxiedVariantPlaylist = proxyVariantPlaylist(url, playlistId, variantPlaylist)
-                    val proxiedVariantPlaylist_m3u8 = proxiedVariantPlaylist.buildM3U8()
+                        val proxiedVariantPlaylist_m3u8 = proxiedVariantPlaylist.buildM3U8()
-                    vpContext.respondCode(200, vpHeaders, proxiedVariantPlaylist_m3u8);
+                        vpContext.respondCode(200, vpHeaders, proxiedVariantPlaylist_m3u8);
-                }.withHeader("Access-Control-Allow-Origin", "*"), true).withTag("castHlsIndirectVariant")
+                    }.withHeader("Access-Control-Allow-Origin", "*"), true).withTag("castHlsIndirectVariant")
+                }
 
                 newMediaRenditions.add(HLS.MediaRendition(
                     mediaRendition.type,
@@ -637,12 +639,16 @@ class StateCasting {
         return listOf(hlsUrl);
     }
 
-    private fun proxyVariantPlaylist(url: String, playlistId: UUID, variantPlaylist: HLS.VariantPlaylist): HLS.VariantPlaylist {
+    private fun proxyVariantPlaylist(url: String, playlistId: UUID, variantPlaylist: HLS.VariantPlaylist, proxySegments: Boolean = true): HLS.VariantPlaylist {
         val newSegments = arrayListOf<HLS.Segment>()
 
-        variantPlaylist.segments.forEachIndexed { index, segment ->
+        if (proxySegments) {
-            val sequenceNumber = variantPlaylist.mediaSequence + index.toLong()
+            variantPlaylist.segments.forEachIndexed { index, segment ->
-            newSegments.add(proxySegment(url, playlistId, segment, sequenceNumber))
+                val sequenceNumber = variantPlaylist.mediaSequence + index.toLong()
+                newSegments.add(proxySegment(url, playlistId, segment, sequenceNumber))
+            }
+        } else {
+            newSegments.addAll(variantPlaylist.segments)
         }
 
         return HLS.VariantPlaylist(

app/src/main/java/com/futo/platformplayer/parsers/HLS.kt

@@ -1,6 +1,7 @@
 package com.futo.platformplayer.parsers
 
 import com.futo.platformplayer.api.http.ManagedHttpClient
+import com.futo.platformplayer.toURIRobust
 import com.futo.platformplayer.yesNoToBoolean
 import java.net.URI
 import java.time.ZonedDateTime
@@ -14,10 +15,11 @@ class HLS {
 
             val masterPlaylistContent = masterPlaylistResponse.body?.string()
                 ?: throw Exception("Master playlist content is empty")
-            val baseUrl = URI(sourceUrl).resolve("./").toString()
+            val baseUrl = sourceUrl.toURIRobust()!!.resolve("./").toString()
 
             val variantPlaylists = mutableListOf<VariantPlaylistReference>()
             val mediaRenditions = mutableListOf<MediaRendition>()
+            val sessionDataList = mutableListOf<SessionData>()
             var independentSegments = false
 
             masterPlaylistContent.lines().forEachIndexed { index, line ->
@@ -37,10 +39,15 @@ class HLS {
                     line == "#EXT-X-INDEPENDENT-SEGMENTS" -> {
                         independentSegments = true
                     }
+
+                    line.startsWith("#EXT-X-SESSION-DATA") -> {
+                        val sessionData = parseSessionData(line)
+                        sessionDataList.add(sessionData)
+                    }
                 }
             }
 
-            return MasterPlaylist(variantPlaylists, mediaRenditions, independentSegments)
+            return MasterPlaylist(variantPlaylists, mediaRenditions, sessionDataList, independentSegments)
         }
 
         fun downloadAndParseVariantPlaylist(client: ManagedHttpClient, sourceUrl: String): VariantPlaylist {
@@ -86,7 +93,7 @@ class HLS {
         }
 
         private fun resolveUrl(baseUrl: String, url: String): String {
-            return if (URI(url).isAbsolute) url else baseUrl + url
+            return if (url.toURIRobust()!!.isAbsolute) url else baseUrl + url
         }
 
 
@@ -105,11 +112,10 @@ class HLS {
 
         private fun parseMediaRendition(client: ManagedHttpClient, line: String, baseUrl: String): MediaRendition {
             val attributes = parseAttributes(line)
-            val uri = attributes["URI"]!!
+            val uri = attributes["URI"]?.let { resolveUrl(baseUrl, it) }
-            val url = resolveUrl(baseUrl, uri)
             return MediaRendition(
                 type = attributes["TYPE"],
-                uri = url,
+                uri = uri,
                 groupID = attributes["GROUP-ID"],
                 language = attributes["LANGUAGE"],
                 name = attributes["NAME"],
@@ -119,6 +125,13 @@ class HLS {
             )
         }
 
+        private fun parseSessionData(line: String): SessionData {
+            val attributes = parseAttributes(line)
+            val dataId = attributes["DATA-ID"]!!
+            val value = attributes["VALUE"]!!
+            return SessionData(dataId, value)
+        }
+
         private fun parseAttributes(content: String): Map<String, String> {
             val attributes = mutableMapOf<String, String>()
             val attributePairs = content.substringAfter(":").splitToSequence(',')
@@ -158,6 +171,20 @@ class HLS {
         }
     }
 
+    data class SessionData(
+        val dataId: String,
+        val value: String
+    ) {
+        fun toM3U8Line(): String = buildString {
+            append("#EXT-X-SESSION-DATA:")
+            appendAttributes(this,
+                "DATA-ID" to dataId,
+                "VALUE" to value
+            )
+            append("\n")
+        }
+    }
+
     data class StreamInfo(
         val bandwidth: Int?,
         val resolution: String?,
@@ -170,7 +197,7 @@ class HLS {
 
     data class MediaRendition(
         val type: String?,
-        val uri: String,
+        val uri: String?,
         val groupID: String?,
         val language: String?,
         val name: String?,
@@ -194,9 +221,11 @@ class HLS {
         }
     }
 
+
     data class MasterPlaylist(
         val variantPlaylistsRefs: List<VariantPlaylistReference>,
         val mediaRenditions: List<MediaRendition>,
+        val sessionDataList: List<SessionData>,
         val independentSegments: Boolean
     ) {
         fun buildM3U8(): String {
@@ -214,6 +243,10 @@ class HLS {
                 builder.append(variant.toM3U8Line())
             }
 
+            sessionDataList.forEach { data ->
+                builder.append(data.toM3U8Line())
+            }
+
             return builder.toString()
         }
     }