/// <summary> /// Suggests an appropriate PCM format that the compressed format can be converted /// to in one step /// </summary> /// <param name="compressedFormat">The compressed format</param> /// <returns>The PCM format</returns> public static WaveFormat SuggestPcmFormat(WaveFormat compressedFormat) { // create a PCM format WaveFormat suggestedFormat = new WaveFormat(compressedFormat.SampleRate, 16, compressedFormat.Channels); //MmException.Try(AcmInterop.acmFormatSuggest(IntPtr.Zero, compressedFormat, suggestedFormat, Marshal.SizeOf(suggestedFormat), AcmFormatSuggestFlags.FormatTag), "acmFormatSuggest"); IntPtr suggestedFormatPointer = WaveFormat.MarshalToPtr(suggestedFormat); IntPtr compressedFormatPointer = WaveFormat.MarshalToPtr(compressedFormat); try { MmResult result = AcmInterop.acmFormatSuggest2(IntPtr.Zero, compressedFormatPointer, suggestedFormatPointer, Marshal.SizeOf(suggestedFormat), AcmFormatSuggestFlags.FormatTag); suggestedFormat = WaveFormat.MarshalFromPtr(suggestedFormatPointer); MmException.Try(result, "acmFormatSuggest"); } finally { Marshal.FreeHGlobal(suggestedFormatPointer); Marshal.FreeHGlobal(compressedFormatPointer); } return(suggestedFormat); }