Merge pull request #203636 from RinaRish/master

Edited Call Recording quick start to include unmixed audio-only code snippets

Author: PRMerger7

articles/communication-services/quickstarts/voice-video-calling/call-recording-sample.md

@@ -19,6 +19,9 @@ ms.custom: mode-api
 
 This quickstart gets you started recording voice and video calls. This quickstart assumes you've already used the [Calling client SDK](get-started-with-video-calling.md) to build the end-user calling experience. Using the **Calling Server APIs and SDKs** you can enable and manage recordings. 
 
+> [!NOTE]
+> **Unmixed audio-only** is still in a **Private Preview** and NOT enabled for Teams Interop meetings.
+
 ::: zone pivot="programming-language-csharp"
 [!INCLUDE [Build Call Recording server sample with C#](./includes/call-recording-samples/recording-server-csharp.md)]
 ::: zone-end

articles/communication-services/quickstarts/voice-video-calling/includes/call-recording-samples/recording-server-csharp.md

@@ -96,6 +96,21 @@ var startRecordingResponse = await callingServerClient.InitializeServerCall("<se
 ```
 The `StartRecordingAsync` API response contains the recording ID of the recording session.
 
+### Specify a user on a channel 0 for unmixed audio-only
+
+```csharp
+var channelAffinity = new []
+{
+    new ChannelAffinity
+    {
+        Channel = 0,
+        Participant = user,
+    },
+};
+
+var startRecordingResponse = await callingServerClient.InitializeServerCall("<servercallid>").StartRecordingAsync("<callbackuri>","<RecordingContent>","<RecordingChannel>","<RecordingFormat>", channelAffinity).ConfigureAwait(false);
+```
+
 ## Start recording session with options using 'StartRecordingAsync' server API
 
 Use the server call ID received during initiation of a call.
@@ -109,6 +124,21 @@ var startRecordingResponse = await callingServerClient.InitializeServerCall("<se
 ```
 The `StartRecordingAsync` API response contains the recording ID of the recording session.
 
+### Specify a user on a channel 0 for unmixed audio-only
+
+```csharp
+var channelAffinity = new []
+{
+    new ChannelAffinity
+    {
+        Channel = 0,
+        Participant = user,
+    },
+};
+
+var startRecordingResponse = await callingServerClient.InitializeServerCall("<servercallid>").StartRecordingAsync("<callbackuri>", RecordingContent.Audio, RecordingChannel.Unmixed, RecordingFormat.Wav, channelAffinity).ConfigureAwait(false);
+```
+
 ## Stop recording session using 'StopRecordingAsync' server API
 
 Use the recording ID received in response of  `StartRecordingAsync`.

articles/communication-services/quickstarts/voice-video-calling/includes/call-recording-samples/recording-server-java.md

@@ -145,6 +145,20 @@ Response<StartCallRecordingResult> response = this.callingServerClient.initializ
 .startRecordingWithResponse(String.valueOf(recordingStateCallbackUri), recordingOptions, null);
 ```
 
+### Specify a user on a channel 0 for unmixed audio-only
+```java
+URI recordingStateCallbackUri = new URI("<CallbackUri>");
+StartRecordingOptions recordingOptions = new StartRecordingOptions();
+recordingOptions.setRecordingContent(RecordingContent.AUDIO);
+recordingOptions.setRecordingChannel(RecordingChannel.UNMIXED);
+recordingOptions.setRecordingFormat(RecordingFormat.WAV);
+recordingOptions.setChannelAffinity({ new ChannelAffinity(0, user) });
+Response<StartCallRecordingResult> response = this.callingServerClient.initializeServerCall("<serverCallId>")
+.startRecordingWithResponse(String.valueOf(recordingStateCallbackUri), recordingOptions, null);
+```
+
+The `StartRecordingAsync` API response contains the recording ID of the recording session.
+
 ## Stop recording session using 'stopRecordingWithResponse' server API
 
 Use the recording ID received in response of `startRecordingWithResponse`.