public BE_CONFIG(LameWaveFormat format) : this(format, 128) { }
public Format(LameWaveFormat format, uint MpeBitRate) { lhv1 = new LHV1(format, MpeBitRate); }
public BE_CONFIG(LameWaveFormat format, uint MpeBitRate) { this.dwConfig = BE_CONFIG_LAME; this.format = new Format(format, MpeBitRate); }
public ushort nQuality; // Quality Setting, HIGH BYTE should be NOT LOW byte, otherwhise quality=5 // FUTURE USE, SET TO 0, align strucutre to 331 bytes //[ MarshalAs( UnmanagedType.ByValArray, SizeConst=255-4*4-2 )] //public byte[] btReserved;//[255-4*sizeof(DWORD) - sizeof( WORD )]; public LHV1(LameWaveFormat format, uint MpeBitRate) { if (format.wFormatTag != (short)WaveFormats.Pcm) { throw new ArgumentOutOfRangeException("format", "Only PCM format supported"); } if (format.wBitsPerSample != 16) { throw new ArgumentOutOfRangeException("format", "Only 16 bits samples supported"); } dwStructVersion = 1; dwStructSize = (uint)Marshal.SizeOf(typeof(BE_CONFIG)); switch (format.nSamplesPerSec) { case 8000: //add by jonney case 16000: case 22050: case 24000: dwMpegVersion = MPEG2; break; case 32000: case 44100: case 48000: dwMpegVersion = MPEG1; break; default: throw new ArgumentOutOfRangeException("format", "Unsupported sample rate"); } dwSampleRate = (uint)format.nSamplesPerSec; // INPUT FREQUENCY dwReSampleRate = 0; // DON'T RESAMPLE switch (format.nChannels) { case 1: nMode = MpegMode.MONO; break; case 2: nMode = MpegMode.STEREO; break; default: throw new ArgumentOutOfRangeException("format", "Invalid number of channels"); } switch (MpeBitRate) { case 32: case 40: case 48: case 56: case 64: case 80: case 96: case 112: case 128: case 160: //Allowed bit rates in MPEG1 and MPEG2 break; case 192: case 224: case 256: case 320: //Allowed only in MPEG1 if (dwMpegVersion != MPEG1) { throw new ArgumentOutOfRangeException("MpsBitRate", "Bit rate not compatible with input format"); } break; case 8: case 16: case 24: case 144: //Allowed only in MPEG2 if (dwMpegVersion != MPEG2) { throw new ArgumentOutOfRangeException("MpsBitRate", "Bit rate not compatible with input format"); } break; default: throw new ArgumentOutOfRangeException("MpsBitRate", "Unsupported bit rate"); } dwBitrate = MpeBitRate; // MINIMUM BIT RATE nPreset = LAME_QUALITY_PRESET.LQP_NORMAL_QUALITY; // QUALITY PRESET SETTING dwPsyModel = 0; // USE DEFAULT PSYCHOACOUSTIC MODEL dwEmphasis = 0; // NO EMPHASIS TURNED ON bOriginal = 1; // SET ORIGINAL FLAG bWriteVBRHeader = 0; bNoRes = 0; // No Bit resorvoir bCopyright = 0; bCRC = 0; bEnableVBR = 0; bPrivate = 0; bStrictIso = 0; dwMaxBitrate = 0; dwVbrAbr_bps = 0; nQuality = 0; nVbrMethod = VBRMETHOD.VBR_METHOD_NONE; nVBRQuality = 0; }