public LameHeaderVersion1(SOUND_INFO soundInfo, MP3_Settings settings)
{
#region " Check the input format "
if (soundInfo.format != ((int)SOUND_FORMAT.WAV | (int)SOUND_FORMAT.PCM_S16))
{
throw new InvalidDataException("Wrong format!", new Exception("Only 16 bit uncompressed WAV supported. You gave " + soundInfo.format));
}
# endregion
/// <summary>
/// Initializes a new instance of the <see cref="Lame"/> class.
/// </summary>
/// <param name="InputWaveFile">The input wave file.</param>
/// <param name="settings">The encoding settings.</param>
public Lame(string InputWaveFile, MP3_Settings settings)
{
inputWaveFile = InputWaveFile;
SOUND_INFO info = new SOUND_INFO();
GetSoundFileInfo(InputWaveFile, ref info);
LAME_CONFIG mp3config = new LAME_CONFIG(info, settings);
if (beInitStream(mp3config, ref Samples, ref outputBufferSize, ref StreamHandle) != LAME_ERR_SUCCESSFUL)
throw new Exception("Failed to initialize lame!");
optimalBufferSize = 2 * (int)Samples;
InputBuffer = new byte[optimalBufferSize];
OutputBuffer = new byte[OutputBufferSize];
}
/// <summary>
/// Initializes a new instance of the <see cref="Lame"/> class.
/// </summary>
/// <param name="settings">The encoding settings.</param>
public Lame(MP3_Settings settings, int Channels, int SampleRate)
{
SOUND_INFO info = new SOUND_INFO();
info.format = 0x010002;
info.samplerate = SampleRate;
info.channels = Channels;
LAME_CONFIG mp3config = new LAME_CONFIG(info, settings);
if (beInitStream(mp3config, ref Samples, ref outputBufferSize, ref StreamHandle) != LAME_ERR_SUCCESSFUL)
throw new Exception("Failed to initialize lame!");
optimalBufferSize = 2 * (int)Samples;
InputBuffer = new byte[optimalBufferSize];
OutputBuffer = new byte[OutputBufferSize];
}
public config(SOUND_INFO soundInfo, MP3_Settings settings)
{
lhv1 = new LameHeaderVersion1(soundInfo, settings);
}
public LAME_CONFIG(SOUND_INFO soundInfo, MP3_Settings settings)
{
dwConfig = BE_CONFIG_LAME;
union = new config(soundInfo, settings);
}
public LameHeaderVersion1(SOUND_INFO soundInfo, MP3_Settings settings)
{
#region " Check the input format "
if (soundInfo.format != ((int)SOUND_FORMAT.WAV | (int)SOUND_FORMAT.PCM_S16))
{
throw new InvalidDataException("Wrong format!", new Exception("Only 16 bit uncompressed WAV supported. You gave " + soundInfo.format));
}
# endregion
dwStructVersion = 1;
dwStructSize = (uint)Marshal.SizeOf(typeof(LAME_CONFIG));
# region " Check input sample rate "
switch (soundInfo.samplerate)
{
case 16000:
case 22050:
case 24000:
dwMpegVersion = MPEG2;
break;
case 32000:
case 44100:
case 48000:
dwMpegVersion = MPEG1;
break;
default:
throw new InvalidDataException("Wrong format!", new Exception("Sample rate " + soundInfo.samplerate + " not supported."));
}
# endregion
dwSampleRate = (uint)soundInfo.samplerate;
dwReSampleRate = 0;
# region " Set encoding channels "
switch (soundInfo.channels)
{
case 1:
nMode = MPEG_MODE.MONO;
break;
case 2:
nMode = MPEG_MODE.STEREO;
break;
default:
throw new InvalidDataException("Wrong format!", new Exception("Invalid number of channels:" + soundInfo.channels));
}
# endregion
# region " Check encoding bit rate "
switch (settings.Bitrate)
{
case 32:
case 40:
case 48:
case 56:
case 64:
case 80:
case 96:
case 112:
case 128:
case 160:
break;
// Allowed only in MPEG1:
case 192:
case 224:
case 256:
case 320:
if (dwMpegVersion != MPEG1)
{
throw new InvalidDataException("Wrong mp3 bit rate!", new Exception("Incompatible bit rate:" + settings.Bitrate));
}
break;
// Allowed only in MPEG2:
case 8:
case 16:
case 24:
case 144:
if (dwMpegVersion != MPEG2)
{
throw new InvalidDataException("Wrong mp3 bit rate!", new Exception("Incompatible bit rate:" + settings.Bitrate));
}
break;
default:
throw new InvalidDataException("Wrong mp3 bit rate!", new Exception("Can't support bit rate"));
}
# endregion
dwBitrate = settings.Bitrate;
nPreset = settings.QualityPreset;
bEnableVBR = settings.VBR_enabled ? 1 : 0;
dwMaxBitrate = settings.VBR_maxBitrate;
dwVbrAbr_bps = 0;
nQuality = 0;
nVbrMethod = settings.VBR_method;
nVBRQuality = settings.VBR_Quality;
bWriteVBRHeader = settings.VBR_WriteHeader ? 1 : 0;
bOriginal = settings.OriginalBit ? 1 : 0;
bCopyright = settings.CopyrightBit ? 1 : 0;
bCRC = settings.CRC_Bit ? 1 : 0;
bPrivate = settings.PrivatBit ? 1 : 0;
bNoRes = settings.DisableBitReservoir ? 1 : 0;
bStrictIso = settings.StrictISOencoding ? 1 : 0;
dwPsyModel = 0;
dwEmphasis = 0;
}
public LAME_CONFIG(SOUND_INFO soundInfo, MP3_Settings settings)
{
dwConfig = BE_CONFIG_LAME;
union = new config(soundInfo, settings);
}
public config(SOUND_INFO soundInfo, MP3_Settings settings)
{
lhv1 = new LameHeaderVersion1(soundInfo, settings);
}