feat: Add signaling for VLA RTP header extension. (#1203)

jitsi · Dec 12, 2024 · 012e063 · 012e063
1 parent 818ab43
commit 012e063
Show file tree

Hide file tree

Showing 3 changed files with 16 additions and 0 deletions.
diff --git a/jicofo-common/src/main/kotlin/org/jitsi/jicofo/codec/CodecConfig.kt b/jicofo-common/src/main/kotlin/org/jitsi/jicofo/codec/CodecConfig.kt
@@ -139,6 +139,9 @@ class Config {
     val av1DependencyDescriptor: RtpExtensionConfig =
         RtpExtensionConfig("jicofo.codec.rtp-extensions.av1-dependency-descriptor")
 
+    val videoLayersAllocation: RtpExtensionConfig =
+        RtpExtensionConfig("jicofo.codec.rtp-extensions.video-layers-allocation")
+
     @JvmField
     val tof: RtpExtensionConfig =
         RtpExtensionConfigWithLegacy("$LEGACY_BASE.ENABLE_TOF", "jicofo.codec.rtp-extensions.tof")

diff --git a/jicofo-common/src/main/kotlin/org/jitsi/jicofo/codec/CodecUtil.kt b/jicofo-common/src/main/kotlin/org/jitsi/jicofo/codec/CodecUtil.kt
@@ -206,6 +206,15 @@ class CodecUtil {
         fun createVideoRtpHdrExtExtensions(
             options: OfferOptions = OfferOptions()
         ): Collection<RTPHdrExtPacketExtension> = buildList {
+            if (config.videoLayersAllocation.enabled) {
+                // a=extmap:12 http://www.webrtc.org/experiments/rtp-hdrext/video-layers-allocation00
+                add(
+                    RTPHdrExtPacketExtension().apply {
+                        id = config.videoLayersAllocation.id.toString()
+                        uri = URI.create("http://www.webrtc.org/experiments/rtp-hdrext/video-layers-allocation00")
+                    }
+                )
+            }
             if (config.av1DependencyDescriptor.enabled()) {
                 // https://aomediacodec.github.io/av1-rtp-spec/#dependency-descriptor-rtp-header-extension
                 val dependencyDescriptorExt = RTPHdrExtPacketExtension()

diff --git a/jicofo-selector/src/main/resources/reference.conf b/jicofo-selector/src/main/resources/reference.conf
@@ -142,6 +142,10 @@ jicofo {
         enabled = true
         id = 11
       }
+      video-layers-allocation {
+        enabled = false
+        id = 12
+      }
       tof {
         // TOF is currently disabled, because we don't support it in the bridge
         // (and currently clients seem to not use it when abs-send-time is