[英]Save recorded sound to project file in UWP
我用設備的麥克風錄制了聲音,但不知道如何保存。 是在MediaCapture
元素的幫助下,如果是,那么該怎么做?
這是一個基本的想法,如何使用Datawriter轉換為mp3並保存在文件中。
我即時編寫了此代碼,因此未經測試。
MediaEncodingProfile _Profile = Windows.Media.MediaProperties.MediaEncodingProfile.CreateMp3(AudioEncodingQuality.High);
MediaTranscoder _Transcoder = new Windows.Media.Transcoding.MediaTranscoder();
CancellationTokenSource _cts = new CancellationTokenSource();
private void ConvertSteamToMp3()
{
IRandomAccessStream audio = buffer.CloneStream(); //your recoreded InMemoryRandomAccessStream
var folder = KnownFolders.MusicLibrary.CreateFolderAsync("MyCapturedAudio", CreationCollisionOption.OpenIfExists);
outputFile = await folder.CreateFileAsync("record.mp3", CreationCollisionOption.GenerateUniqueName);
using (IRandomAccessStream fileStream = await outputFile.OpenAsync(FileAccessMode.ReadWrite))
{
var preparedTranscodeResult = await _Transcoder.PrepareStreamTranscodeAsync(audio, fileStream, _Profile);
if (preparedTranscodeResult.CanTranscode)
{
var progress = new Progress<double>(TranscodeProgress);
await preparedTranscodeResult.TranscodeAsync().AsTask(_cts.Token, progress);
}
using (IOutputStream outputStream = fileStream.GetOutputStreamAt(0))
{
using (DataWriter dataWriter = new DataWriter(outputStream))
{
//TODO: Replace "Bytes" with the type you want to write.
dataWriter.WriteBytes(bytes);
await dataWriter.StoreAsync();
dataWriter.DetachStream();
}
await outputStream.FlushAsync();
}
}
}
或者只是將流保存到文件中
public async SaveToFile()
{
IRandomAccessStream audio = buffer.CloneStream(); //your recoreded InMemoryRandomAccessStream
var folder = KnownFolders.MusicLibrary.CreateFolderAsync("MyCapturedAudio", CreationCollisionOption.OpenIfExists);
outputFile = await folder.CreateFileAsync("record.mp3", CreationCollisionOption.GenerateUniqueName);
using (IRandomAccessStream fileStream = await outputFile.OpenAsync(FileAccessMode.ReadWrite))
{
await RandomAccessStream.CopyAndCloseAsync(audio.GetInputStreamAt(0), fileStream.GetOutputStreamAt(0));
await audio.FlushAsync();
audio.Dispose();
}
});
}
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