internal static async Task RequestMediaAccessAsync(StreamingCaptureMode mode)
{
// Ensure that the UWP app was authorized to capture audio (cap:microphone)
// or video (cap:webcam), otherwise the native plugin will fail.
try
{
MediaCapture mediaAccessRequester = new MediaCapture();
var mediaSettings = new MediaCaptureInitializationSettings
{
AudioDeviceId = "",
VideoDeviceId = "",
StreamingCaptureMode = mode,
PhotoCaptureSource = PhotoCaptureSource.VideoPreview
};
await mediaAccessRequester.InitializeAsync(mediaSettings);
}
catch (UnauthorizedAccessException uae)
{
Logger.Log("Access to A/V denied, check app permissions: " + uae.Message);
throw uae;
}
catch (Exception ex)
{
Logger.Log("Failed to initialize A/V with unknown exception: " + ex.Message);
throw ex;
}
}
/// <summary>
/// Handles changes to the StreamingCaptureMode property.
/// </summary>
/// <param name="d">
/// The <see cref="DependencyObject"/> on which
/// the property has changed value.
/// </param>
/// <param name="e">
/// Event data that is issued by any event that
/// tracks changes to the effective value of this property.
/// </param>
private static void OnStreamingCaptureModeChanged(
DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var target = (CameraCaptureControl)d;
StreamingCaptureMode oldStreamingCaptureMode = (StreamingCaptureMode)e.OldValue;
StreamingCaptureMode newStreamingCaptureMode = target.StreamingCaptureMode;
target.OnStreamingCaptureModeChanged(oldStreamingCaptureMode, newStreamingCaptureMode);
}
private MediaCaptureInitializationSettings CreateSettings(StreamingCaptureMode mode)
{
return(new MediaCaptureInitializationSettings
{
SharingMode = MediaCaptureSharingMode.SharedReadOnly,
StreamingCaptureMode = mode,
MemoryPreference = MediaCaptureMemoryPreference.Auto,
});
}
public GeneralMediaCapturer(MediaFrameSourceGroup sourceGroup, StreamingCaptureMode mode)
{
var settings = CreateSettings(mode);
settings.SourceGroup = sourceGroup;
mediaCapture = new MediaCapture();
mediaCapture.InitializeAsync(settings).AsTask().Wait();
InitReader();
}
public GeneralMediaCapturer(DeviceInformation device, StreamingCaptureMode mode)
{
var settings = CreateSettings(mode);
if (mode == StreamingCaptureMode.Video)
{
settings.VideoDeviceId = device.Id;
}
else
{
settings.AudioDeviceId = device.Id;
}
mediaCapture = new MediaCapture();
mediaCapture.InitializeAsync(settings).AsTask().Wait();
InitReader();
}
internal static Task <bool> RequestAccessAsync(StreamingCaptureMode mode)
{
// Note that the UWP UI thread and the main Unity app thread are always different.
// https://docs.unity3d.com/Manual/windowsstore-appcallbacks.html
Debug.Assert(!UnityEngine.WSA.Application.RunningOnUIThread());
var permissionTcs = new TaskCompletionSource <bool>();
UnityEngine.WSA.Application.InvokeOnUIThread(() =>
{
// Request UWP access to audio or video capture. The OS may show some popup dialog to the
// user to request permission. This will succeed only if the user grants permission.
try
{
var mediaAccessRequester = new MediaCapture();
var mediaSettings = new MediaCaptureInitializationSettings();
mediaSettings.AudioDeviceId = "";
mediaSettings.VideoDeviceId = "";
mediaSettings.StreamingCaptureMode = mode;
mediaSettings.PhotoCaptureSource = PhotoCaptureSource.VideoPreview;
mediaSettings.SharingMode = MediaCaptureSharingMode.SharedReadOnly; // for MRC and lower res camera
mediaAccessRequester.InitializeAsync(mediaSettings).AsTask().ContinueWith(task =>
{
if (task.Exception != null)
{
Debug.LogError($"Media access failure: {task.Exception.InnerException.Message}.");
permissionTcs.SetResult(false);
}
else
{
permissionTcs.SetResult(true);
}
});
}
catch (Exception ex)
{
// Log an error and prevent activation
Debug.LogError($"Media access failure: {ex.Message}.");
permissionTcs.SetResult(false);
}
},
waitUntilDone: false);
return(permissionTcs.Task);
}
/// <summary>
/// Provides derived classes an opportunity to handle changes
/// to the StreamingCaptureMode property.
/// </summary>
/// <param name="oldStreamingCaptureMode">The old StreamingCaptureMode value</param>
/// <param name="newStreamingCaptureMode">The new StreamingCaptureMode value</param>
protected virtual void OnStreamingCaptureModeChanged(
StreamingCaptureMode oldStreamingCaptureMode, StreamingCaptureMode newStreamingCaptureMode)
{
}
/// <summary>
/// Provides derived classes an opportunity to handle changes
/// to the StreamingCaptureMode property.
/// </summary>
/// <param name="oldStreamingCaptureMode">The old StreamingCaptureMode value</param>
/// <param name="newStreamingCaptureMode">The new StreamingCaptureMode value</param>
protected virtual void OnStreamingCaptureModeChanged(
StreamingCaptureMode oldStreamingCaptureMode, StreamingCaptureMode newStreamingCaptureMode)
{
}
