public static async System.Threading.Tasks.Task <int> SynSpeechWriteToFileAsync(string text, string fileName)
{
using (Windows.Media.SpeechSynthesis.SpeechSynthesizer synth = new Windows.Media.SpeechSynthesis.SpeechSynthesizer())
{
try
{
using (Windows.Media.SpeechSynthesis.SpeechSynthesisStream synthStream = await synth.SynthesizeTextToStreamAsyncServiceAsync(text, apiArgs)) // doesn't handle special characters such as quotes
{
// TODO: obsolete to use DataReader? use await Windows.Storage.FileIO.Read...(file);
using (Windows.Storage.Streams.DataReader reader = new Windows.Storage.Streams.DataReader(synthStream))
{
await reader.LoadAsync((uint)synthStream.Size);
Windows.Storage.Streams.IBuffer buffer = reader.ReadBuffer((uint)synthStream.Size);
Windows.Storage.StorageFolder tempFolder = await Windows.Storage.StorageFolder.GetFolderFromPathAsync(Options.options.tempFolderPath);
Windows.Storage.StorageFile srcFile = await tempFolder.CreateFileAsync(Options.options.audio.speechSynthesisFileName, Windows.Storage.CreationCollisionOption.ReplaceExisting);
await Windows.Storage.FileIO.WriteBufferAsync(srcFile, buffer);
Windows.Storage.FileProperties.MusicProperties musicProperties = await srcFile.Properties.GetMusicPropertiesAsync();
Log.WriteLine("Bitrate:" + musicProperties.Bitrate);
Windows.Media.MediaProperties.MediaEncodingProfile profile = Windows.Media.MediaProperties.MediaEncodingProfile.CreateWav(Windows.Media.MediaProperties.AudioEncodingQuality.Low);
Windows.Media.Transcoding.MediaTranscoder transcoder = new Windows.Media.Transcoding.MediaTranscoder();
Windows.Storage.StorageFile destFile = await tempFolder.CreateFileAsync(fileName, Windows.Storage.CreationCollisionOption.ReplaceExisting);
Windows.Media.Transcoding.PrepareTranscodeResult result = await transcoder.PrepareFileTranscodeAsync(srcFile, destFile, profile);
if (result.CanTranscode)
{
await result.TranscodeAsync();
}
else
{
Log.WriteLine("can't transcode file:" + result.FailureReason.ToString());
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
return(0);
}
//Create a profile
private void CreateProfile()
{
profile = Windows.Media.MediaProperties.MediaEncodingProfile.CreateMp4(Windows.Media.MediaProperties.VideoEncodingQuality.Qvga);
// Use MediaEncodingProfile to encode the profile
System.Guid MFVideoRotationGuild = new System.Guid("C380465D-2271-428C-9B83-ECEA3B4A85C1");
int MFVideoRotation = ConvertVideoRotationToMFRotation(VideoRotation.None);
profile.Video.Properties.Add(MFVideoRotationGuild, PropertyValue.CreateInt32(MFVideoRotation));
// add the mediaTranscoder
var transcoder = new Windows.Media.Transcoding.MediaTranscoder();
transcoder.AddVideoEffect(Windows.Media.VideoEffects.VideoStabilization);
}
/// <summary>
/// Initialize Recording function.
/// </summary>
private async void InitializeRecording()
{
mediaCapture = new Windows.Media.Capture.MediaCapture();
mediaCapture.Failed += MediaCaptureFailed;
var settings = new MediaCaptureInitializationSettings();
settings.StreamingCaptureMode = StreamingCaptureMode.Audio;
settings.AudioDeviceId = MediaDevice.GetDefaultAudioCaptureId(AudioDeviceRole.Default);
await mediaCapture.InitializeAsync(settings);
encodingProfile = Windows.Media.MediaProperties.MediaEncodingProfile.CreateWav(
Windows.Media.MediaProperties.AudioEncodingQuality.Auto);
recorded = false; //no audio recorded yet
recording = false; //recording not started
}
private async System.Threading.Tasks.Task AudioFileOutputAsync(string outputFileName)
{
Windows.Media.MediaProperties.MediaEncodingProfile mediaEncodingProfile = new Windows.Media.MediaProperties.MediaEncodingProfile();
mediaEncodingProfile = Windows.Media.MediaProperties.MediaEncodingProfile.CreateWav(Windows.Media.MediaProperties.AudioEncodingQuality.Low); // Low defaults to mono - good
// hmmmm, suspect that any attempt to change ChannelCount really doesn't do anything (AudioEncodingQuality.High)
mediaEncodingProfile.Audio.ChannelCount = 1; // careful - stereo not permitted for some speech applications so must use mono
Windows.Storage.StorageFolder tempFolder = await Windows.Storage.StorageFolder.GetFolderFromPathAsync(WoundifyShared.Options.options.tempFolderPath);
Windows.Storage.StorageFile srcFile = await tempFolder.CreateFileAsync(WoundifyShared.Options.options.audio.speechSynthesisFileName, Windows.Storage.CreationCollisionOption.ReplaceExisting);
Windows.Storage.StorageFile file = await tempFolder.CreateFileAsync(outputFileName, Windows.Storage.CreationCollisionOption.ReplaceExisting);
Windows.Media.Audio.CreateAudioFileOutputNodeResult fileOutputNodeResult = await graph.CreateFileOutputNodeAsync(file, mediaEncodingProfile);
if (fileOutputNodeResult.Status != Windows.Media.Audio.AudioFileNodeCreationStatus.Success)
{
WoundifyShared.Log.WriteLine("Audio device output unavailable:" + fileOutputNodeResult.Status.ToString());
return;
}
fileOutputNode = fileOutputNodeResult.FileOutputNode;
}
/// <summary>
/// StartRecording method
/// Start to record audio using the microphone.
/// The audio stream in stored in memory with no limit of size.
/// </summary>
/// <param name="MaxStreamSizeInBytes">
/// This parameter defines the max size of the buffer in memory. When the size of the buffer is over this limit, the
/// client create another stream and remove the previouw stream.
/// By default the value is 0, in that case the audio stream in stored in memory with no limit of size.
/// </param>
/// <param name="ThresholdDuration">
/// The duration in milliseconds for the calculation of the average audio level.
/// With this parameter you define the period during which the average level is measured.
/// If the value is 0, no buffer will be sent to Cognitive Services.
/// </param>
/// <param name="ThresholdLevel">
/// The minimum audio level average necessary to trigger the recording,
/// it's a value between 0 and 65535. You can tune this value after several microphone tests.
/// If the value is 0, no buffer will be sent to Cognitive Services.
/// </param>
/// <return>return true if successful.
/// </return>
public async System.Threading.Tasks.Task <bool> StartContinuousRecording(ulong MaxStreamSizeInBytes, UInt16 ThresholdDuration, UInt16 ThresholdLevel)
{
thresholdDuration = ThresholdDuration;
thresholdLevel = ThresholdLevel;
bool bResult = false;
maxStreamSizeInBytes = MaxStreamSizeInBytes;
if (isRecordingInitialized != true)
{
await InitializeRecording();
}
if (STTStream != null)
{
STTStream.BufferReady -= STTStream_BufferReady;
STTStream.AudioLevel -= STTStream_AudioLevel;
STTStream.Dispose();
STTStream = null;
}
STTStream = SpeechToTextMainStream.Create(maxStreamSizeInBytes, thresholdDuration, thresholdLevel);
STTStream.AudioLevel += STTStream_AudioLevel;
STTStream.BufferReady += STTStream_BufferReady;
if ((STTStream != null) && (isRecordingInitialized == true))
{
try
{
Windows.Media.MediaProperties.MediaEncodingProfile MEP = Windows.Media.MediaProperties.MediaEncodingProfile.CreateWav(Windows.Media.MediaProperties.AudioEncodingQuality.Auto);
if (MEP != null)
{
if (MEP.Audio != null)
{
uint framerate = 16000;
uint bitsPerSample = 16;
uint numChannels = 1;
uint bytespersecond = 32000;
MEP.Audio.Properties[WAVAttributes.MF_MT_AUDIO_SAMPLES_PER_SECOND] = framerate;
MEP.Audio.Properties[WAVAttributes.MF_MT_AUDIO_NUM_CHANNELS] = numChannels;
MEP.Audio.Properties[WAVAttributes.MF_MT_AUDIO_BITS_PER_SAMPLE] = bitsPerSample;
MEP.Audio.Properties[WAVAttributes.MF_MT_AUDIO_AVG_BYTES_PER_SECOND] = bytespersecond;
foreach (var Property in MEP.Audio.Properties)
{
System.Diagnostics.Debug.WriteLine("Property: " + Property.Key.ToString());
System.Diagnostics.Debug.WriteLine("Value: " + Property.Value.ToString());
if (Property.Key == new Guid("5faeeae7-0290-4c31-9e8a-c534f68d9dba"))
{
framerate = (uint)Property.Value;
}
if (Property.Key == new Guid("f2deb57f-40fa-4764-aa33-ed4f2d1ff669"))
{
bitsPerSample = (uint)Property.Value;
}
if (Property.Key == new Guid("37e48bf5-645e-4c5b-89de-ada9e29b696a"))
{
numChannels = (uint)Property.Value;
}
}
}
if (MEP.Container != null)
{
foreach (var Property in MEP.Container.Properties)
{
System.Diagnostics.Debug.WriteLine("Property: " + Property.Key.ToString());
System.Diagnostics.Debug.WriteLine("Value: " + Property.Value.ToString());
}
}
}
await mediaCapture.StartRecordToStreamAsync(MEP, STTStream);
bResult = true;
isRecording = true;
System.Diagnostics.Debug.WriteLine("Recording in audio stream...");
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Exception while recording in audio stream:" + e.Message);
}
}
return(bResult);
}
// </SnippetMediaCaptureVideo_InitSettingsCS>
// <SnippetMediaCaptureVideo_CreateProfileCS>
// Create a profile.
private void CreateProfile()
{
_profile = Windows.Media.MediaProperties.MediaEncodingProfile.CreateMp4(
Windows.Media.MediaProperties.VideoEncodingQuality.Qvga);
}
//Create a profile
private void CreateProfile()
{
profile = Windows.Media.MediaProperties.MediaEncodingProfile.CreateMp4(Windows.Media.MediaProperties.VideoEncodingQuality.Qvga);
// Use MediaEncodingProfile to encode the profile
System.Guid MFVideoRotationGuild = new System.Guid("C380465D-2271-428C-9B83-ECEA3B4A85C1");
int MFVideoRotation = ConvertVideoRotationToMFRotation(VideoRotation.None);
profile.Video.Properties.Add(MFVideoRotationGuild, PropertyValue.CreateInt32(MFVideoRotation));
// add the mediaTranscoder
var transcoder = new Windows.Media.Transcoding.MediaTranscoder();
transcoder.AddVideoEffect(Windows.Media.VideoEffects.VideoStabilization);
}