/// <summary> /// Converts sample format to toFormat and returns new instance of PcmData. /// pcmFrom is not changed. /// </summary> /// <param name="toFormat">sample format to convert</param> /// <returns>Newly instanciated PcmData</returns> public PcmData Convert(PcmData pcmFrom, WasapiCS.SampleFormatType toFormat, BitsPerSampleConvArgs args) { if (args == null) { args = new BitsPerSampleConvArgs(NoiseShapingType.None); } var fromFormat = WasapiCS.BitAndFormatToSampleFormatType(pcmFrom.BitsPerSample, pcmFrom.ValidBitsPerSample, SampleFormatInfo.VrtToBft(pcmFrom.SampleValueRepresentationType)); if (fromFormat == WasapiCS.SampleFormatType.Unknown || toFormat == WasapiCS.SampleFormatType.Unknown) { return(null); } var newSampleArray = mConvert[(int)fromFormat][(int)toFormat](pcmFrom, toFormat, args); PcmData newPcmData = new PcmData(); newPcmData.CopyHeaderInfoFrom(pcmFrom); newPcmData.SetFormat(pcmFrom.NumChannels, WasapiCS.SampleFormatTypeToUseBitsPerSample(toFormat), WasapiCS.SampleFormatTypeToValidBitsPerSample(toFormat), pcmFrom.SampleRate, SampleFormatInfo.BftToVrt(WasapiCS.SampleFormatTypeToBitFormatType(toFormat)), pcmFrom.NumFrames); newPcmData.SetSampleArray(newSampleArray); return(newPcmData); }