示例#1
0
 /// <summary>
 /// Opens this driver
 /// </summary>
 public void Open()
 {
     if (driverHandle == IntPtr.Zero)
     {
         MmException.Try(AcmInterop.acmDriverOpen(out driverHandle, DriverId, 0), "acmDriverOpen");
     }
 }
示例#2
0
        /// <summary>
        /// Creates a new ACM stream to convert one format to another, using a
        /// specified driver identified and wave filter
        /// </summary>
        /// <param name="driverId">the driver identifier</param>
        /// <param name="sourceFormat">the source format</param>
        /// <param name="waveFilter">the wave filter</param>
        public AcmStream(IntPtr driverId, WaveFormat sourceFormat, WaveFilter waveFilter)
        {
            int sourceBufferSize = Math.Max(16384, sourceFormat.AverageBytesPerSecond);

            this.sourceFormat = sourceFormat;
            sourceBufferSize -= (sourceBufferSize % sourceFormat.BlockAlign);
            MmException.Try(AcmInterop.acmDriverOpen(out driverHandle, driverId, 0), "acmDriverOpen");
            MmException.Try(AcmInterop.acmStreamOpen(out streamHandle, driverHandle,
                                                     sourceFormat, sourceFormat, waveFilter, IntPtr.Zero, IntPtr.Zero, AcmStreamOpenFlags.NonRealTime), "acmStreamOpen");
            streamHeader = new AcmStreamHeader(streamHandle, sourceBufferSize, SourceToDest(sourceBufferSize));
        }