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Configuring Audio, Video Input and Output devices - Android 5.x

In this guide we'll show you how to configure Audio, Video input and output devices from your Twilio Video Rooms API application. Taking advantage of the ability to control input and output devices lets you build a better end user experience.

Selecting a specific Video Input

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CameraCapturer

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The CameraCapturer provides video frames via the Camera API(link takes you to an external page) for a LocalVideoTrack from a given CameraCapturer.CameraSource.

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// Share your camera

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CameraCapturer cameraCapturer = new CameraCapturer(context, CameraSource.FRONT_CAMERA);

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LocalVideoTrack localVideoTrack = LocalVideoTrack.create(context, true, cameraCapturer);

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VideoView primaryVideoView = (VideoView) findViewById(R.id.local_video);

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// Mirror front camera

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primaryVideoView.setMirror(true);

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// Render camera to view

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localVideoTrack.addRenderer(primaryVideoView);

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// Switch the camera source

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CameraSource cameraSource = cameraCapturer.getCameraSource();

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cameraCapturer.switchCamera();

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primaryVideoView.setMirror(cameraSource == CameraSource.BACK_CAMERA);

Camera2Capturer

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The Camera2Capturer provides video frames via the Camera 2 API(link takes you to an external page) for a LocalVideoTrack from a given camera ID.

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// Get the device camera IDs

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CameraManager cameraManager =

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        (CameraManager) cameraCapturerActivity.getSystemService(Context.CAMERA_SERVICE);

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String[] cameraIds = cameraManager.getCameraIdList();

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// This example uses the first Camera ID but applications can make their own decisions

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// about which Camera ID to use

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String cameraId = cameraIds[0];

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// Share your camera

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Camera2Capturer camera2Capturer = new Camera2Capturer(context, cameraId, camera2Listener);

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LocalVideoTrack localVideoTrack = LocalVideoTrack.create(context, true, camera2Capturer);

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// Render camera to a view

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VideoView primaryVideoView = (VideoView) findViewById(R.id.local_video);

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localVideoTrack.addRenderer(primaryVideoView);

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// Switch the camera source from the first camera ID to the second camera ID

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camera2Capturer.switchCamera(cameraIds[1]);

For more details and other best practices capturing video from the camera capturers, please reference the Video Android Quickstart(link takes you to an external page).

Selecting a specific Audio input

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The Twilio Video Android SDK does not officially support switching the AudioSource and just defaults to the native Android API MediaRecorder.AudioSource.VOICE_COMMUNICATION(link takes you to an external page)

Selecting a specific Audio output

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Using the AudioManager(link takes you to an external page) class provided by Android, you can specify if audio is routed through the headset or speaker.

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// Get AudioManager

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AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);

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// Route audio through speaker

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audioManager.setSpeakerphoneOn(true);

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// Route audio through headset

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audioManager.setSpeakerphoneOn(false);