Hello Eveyone I am trying to mute/unmute a default mic using AudioDeviceController but it looks like I cannot initialize the variable.
I have since used AudioDeviceModulesManager because you can get an object by device ID.
How do I initilize the Variabale like I do with AudioDeviceModulesManager .
public App()
{
var endpointID = MediaDevice.GetDefaultAudioCaptureId(AudioDeviceRole.Default);
AudioDeviceModulesManager MyController = new AudioDeviceModulesManager(endpointID);
var thing = MyController.FindAll();
var test = thing[0];
}
Thanks for your interesting, derive from official document remake part, To get an instance of this object, retrieve the MediaCapture.AudioDeviceController property.
So we can only get AudioDeviceController instance from MediaCapture class. For more detail please check this Basic photo, video, and audio capture with MediaCapture tutorial.
Related
I am looking for documentation and stuff but could not find a solution yet
Installed NuGet package
Also generated API key
However can't find proper documentation how to use API key
Moreover, I want to be able to upload very long audio files
So what would be the proper way to upload up to 3 hours audio files and get their results?
I have 300$ budget so should be enough
Here my so far code
This code currently fails since I have not set the credentials correctly at the moment which I don't know how to
I also have service account file ready to use
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
var speech = SpeechClient.Create();
var config = new RecognitionConfig
{
Encoding = RecognitionConfig.Types.AudioEncoding.Flac,
SampleRateHertz = 48000,
LanguageCode = LanguageCodes.English.UnitedStates
};
var audio = RecognitionAudio.FromStorageUri("1m.flac");
var response = speech.Recognize(config, audio);
foreach (var result in response.Results)
{
foreach (var alternative in result.Alternatives)
{
Debug.WriteLine(alternative.Transcript);
}
}
}
}
I don't want to set environment variable. I have both API key and Service Account json file. How can I manually set?
You need to use the SpeechClientBuilder to create a SpeechClient with custom credentials, if you don't want to use the environment variable. Assuming you've got a service account file somewhere, change this:
var speech = SpeechClient.Create();
to this:
var speech = new SpeechClientBuilder
{
CredentialsPath = "/path/to/your/file"
}.Build();
Note that to perform a long-running recognition operation, you should also use the LongRunningRecognize method - I strongly suspect your current RPC will fail, either explicitly because it's trying to run on a file that's too large, or it'll just time out.
You need to set the environment variable before create the instance of Speech:
Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", "text-tospeech.json");
Where the second param (text-tospeech.json) is your file with credentials generated by Google Api.
Good day,
in android phone -> virtual keyboard, system list all the enabled keyboards in this page, how can i get all enabled keyboards type with C# in my Xamarin.forms APP?
Thanks!
Roll
In Android, you could use InputDevice.
InputDevice: https://developer.android.com/reference/android/view/InputDevice
You could try the code below:
int[] devicesIds = InputDevice.GetDeviceIds();
foreach (var item in devicesIds)
{
//Check the device you want
InputDevice device = InputDevice.GetDevice(item);
//device.getName must to have virtual
var s = device.Name;
var b = device.KeyboardType;
}
You could use DependencyService to call this in Xamarin.Forms.
DependencyService: https://learn.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/dependency-service/introduction
thanks your reply, i try the way you suggested, but the returned value was not i want...
i found another post here, use that way and finally get the things i want,
here is my code to share:
InputMethodManager manager = (InputMethodManager)context.GetSystemService(Context.InputMethodService);
IList<InputMethodInfo> mInputMethodProperties = manager.EnabledInputMethodList;
IEnumerator<InputMethodInfo> imi = mInputMethodProperties.GetEnumerator();
while (imi.MoveNext())
{
InputMethodInfo inputInfo = imi.Current;
var iN = inputInfo.ServiceName;
}
Best Regards & thanks
Roll
I'm trying to get the lat/lng of my current location of my win7 PC, I'm using Bing maps. I've had some words with the guys at the SO C# chat room and they told me about this github project. Now I've downloaded the NuGet components: Geocoding.Core and Geocoding.Microsoft
In the example provided, an IGeocoder should be instantiated as follows:
IGeocoder geocoder = new GoogleGeocoder() { ApiKey = "this-is-my-optional-google-api-key" };
Now what I'm trying to do is using MicrosoftGeocoder instead. But the IDE doesn't seem to have this kind of constructor, the new keyword won't give me that option. Here's my code:
public MainWindow()
{
InitializeComponent();
MainMap.Mode = new AerialMode(true);
MainMap.Focus();
MainMap.Culture = "ar-sa";
MainMap.MouseDoubleClick += new MouseButtonEventHandler(MapWithPushpins_MouseDoubleClick);
IGeocoder geocoder = new MicrosoftGeocoder("KEY HERE");
}
I should say that I haven't dealt with github very much so excuse my ignorance if I'm missing something.
There is no MicrosoftGeocoder type available in Geocoding.Microsoft but the constructor of BingMapsGeocoder accepts a key:
IGeocoder geocoder = new BingMapsGeocoder("KEY HERE");
I want to play some background music inside the launcher for my new project. But I get an error.
private void playlooping()
{
SoundPlayer.PlayLooping(system.Resources.Bgm);
}
//Bgm is the name of the song.
For some reason I get the error
no overload for method 'PlayLooping' Takes 1 arguments
As I mentioned in the comment, PlayLooping does not take any arguments. So you need to specify the sound you want to play somewhere else. This is done either by setting it via the SoundPlayer-Constructor like this:
// via string path
var soundPlayer = new SoundPlayer(#"C:\somePath\someFile.wav");
// via stream
var soundPlayer = new SoundPlayer(musicStream);
So if your resource is a string you should be good to go with:
var soundPlayer = new SoundPlayer(system.Resources.Bgm);
Alternative is to set the string-path or stream after instantiating your SoundPlayer via the Site- or Stream-Properties of your SoundPlayer object:
var soundPlayer = new SoundPlayer();
// via path
soundPlayer.Site = #"C:\path\test.wav";
// via stream
soundPlayer.Stream = someStream;
After setting this up correclty you should be good calling PlayLooping. So your final code should be looking like this (works for me in a test windows forms application, with the soundfile simply put in my debug folder):
var soundPlayer = new SoundPlayer("test.wav");
soundPlayer.PlayLooping();
You can find the full documentation on the SoundPlayer here: https://msdn.microsoft.com/en-us/library/system.media.soundplayer(v=vs.110).aspx
Hey all i am trying to find the setting to change my video source to "composite" on my webcam. Seems that if i unplug the USB and then plug it back in and fire up the code, its just got a blank screen. But once i change the video source (in another program) and then go back and run my code again, it shows up.
So i need something that will allow me to change that in order for that same thing to happen but within my own app without having to start another program that has that feature to set the webcam.
When i pull the USB cable out then put it back in and i run the source code, the app's picturebox is Black.
The "other program" i use to change the video source (that seems to work to bring up the image):
After i use that "other program" i go back to the source code and run it and this is what i get then:
I am using the C# code called dot Net Webcam Library from here: enter link description here
It seems to use the DirectShow from enter link description here
I have noticed in the source for that it lists different types of video settings (found below in the AXExtend.cs):
public enum PhysicalConnectorType
{
Video_Tuner = 1,
Video_Composite,
Video_SVideo,
Video_RGB,
Video_YRYBY,
Video_SerialDigital,
Video_ParallelDigital,
Video_SCSI,
Video_AUX,
Video_1394,
Video_USB,
Video_VideoDecoder,
Video_VideoEncoder,
Video_SCART,
Video_Black,
Audio_Tuner = 0x1000,
Audio_Line,
Audio_Mic,
Audio_AESDigital,
Audio_SPDIFDigital,
Audio_SCSI,
Audio_AUX,
Audio_1394,
Audio_USB,
Audio_AudioDecoder,
}
But i am unsure of how to call that up in the code here:
Device selectedDevice = device as Device;
imageCapture.Device = selectedDevice as Device;
imageCapture.PerformAutoScale();
imageCapture.Refresh();
imageCapture.Start();
So i am guessing that the "Video_Composite" is what i may need in order to do that?
Any help would be great!!! Thanks!
David
Code update
foreach (Device device in Device.FindDevices())
{
if (device.ToString() == "BackupCamera")
{
Device selectedDevice = device as Device;
IGraphBuilder graphBuilder = new FilterGraph() as IGraphBuilder;
DsDevice device1 = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice)[1]; // <<--- Your Device
Guid baseFilterIdentifier = typeof(IBaseFilter).GUID;
object videoSourceObject;
device1.Mon.BindToObject(null, null, ref baseFilterIdentifier, out videoSourceObject);
IBaseFilter videoSourceBaseFilter = videoSourceObject as IBaseFilter;
graphBuilder.AddFilter(videoSourceBaseFilter, "Source");
ICaptureGraphBuilder2 captureGraphBuilder = new CaptureGraphBuilder2() as ICaptureGraphBuilder2;
captureGraphBuilder.SetFiltergraph(graphBuilder);
object crossbarObject;
captureGraphBuilder.FindInterface(FindDirection.UpstreamOnly, null, videoSourceBaseFilter, typeof(IAMCrossbar).GUID, out crossbarObject);
IAMCrossbar crossbar = crossbarObject as IAMCrossbar;
int inputPinCount, outputPinCount;
crossbar.get_PinCounts(out inputPinCount, out outputPinCount); // <<-- In/Out Pins
// Pin Selection: Physical Input 2 (e.g. Composite) to Capture Pin 0
crossbar.Route(0, 2);
imageCapture.Device = selectedDevice as Device;
imageCapture.PerformAutoScale();
imageCapture.Refresh();
imageCapture.Start();
}
}
Before running the filer graph, you need to obtain the crossbar interface. You typically use ICaptureGraphBuilder2::FindInterface for this. This requires an additional filter and the FindInterface method is useful specifically for this reason:
Supporting Filters. If a capture device uses a Windows Driver Model (WDM) driver, the graph may require certain filters upstream from the WDM Video Capture filter, such as a TV Tuner filter or an Analog Video Crossbar filter. If the pCategory parameter does not equal NULL, this method automatically inserts any required WDM filters into the graph.
Having this done, you will have IAMCrossbar interface, and IAMCrossbar::Route method is how you switch the inputs.
See also: Crossbar filter change current input to Composite
Code snippet:
IGraphBuilder graphBuilder = new FilterGraph() as IGraphBuilder;
DsDevice device = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice)[1]; // <<--- Your Device
Guid baseFilterIdentifier = typeof(IBaseFilter).GUID;
object videoSourceObject;
device.Mon.BindToObject(null, null, ref baseFilterIdentifier, out videoSourceObject);
IBaseFilter videoSourceBaseFilter = videoSourceObject as IBaseFilter;
graphBuilder.AddFilter(videoSourceBaseFilter, "Source");
ICaptureGraphBuilder2 captureGraphBuilder = new CaptureGraphBuilder2() as ICaptureGraphBuilder2;
captureGraphBuilder.SetFiltergraph(graphBuilder);
object crossbarObject;
captureGraphBuilder.FindInterface(FindDirection.UpstreamOnly, null, videoSourceBaseFilter, typeof(IAMCrossbar).GUID, out crossbarObject);
IAMCrossbar crossbar = crossbarObject as IAMCrossbar;
int inputPinCount, outputPinCount;
crossbar.get_PinCounts(out inputPinCount, out outputPinCount); // <<-- In/Out Pins
// Pin Selection: Physical Input 2 (e.g. Composite) to Capture Pin 0
crossbar.Route(0, 2);