/// <summary>
/// Creates a new instance of <see cref="Mp3AudioEncoderLame"/>.
/// </summary>
/// <param name="channelCount">Channel count.</param>
/// <param name="sampleRate">Sample rate (in samples per second).</param>
/// <param name="outputBitRateKbps">Output bit rate (in kilobits per second).</param>
/// <remarks>
/// Encoder expects audio data in 16-bit samples.
/// Stereo data should be interleaved: left sample first, right sample second.
/// </remarks>
public Mp3AudioEncoderLame(int channelCount, int sampleRate, int outputBitRateKbps)
{
Contract.Requires(channelCount == 1 || channelCount == 2);
Contract.Requires(sampleRate > 0);
Contract.Requires(SupportedBitRates.Contains(outputBitRateKbps));
if (lameFacadeType == null)
{
throw new InvalidOperationException("LAME DLL is not loaded. Call SetLameDllLocation first.");
}
lame = (ILameFacade)Activator.CreateInstance(lameFacadeType);
lame.ChannelCount = channelCount;
lame.InputSampleRate = sampleRate;
lame.OutputBitRate = outputBitRateKbps;
lame.PrepareEncoding();
formatData = FillFormatData();
}
/// <summary>
/// Creates a new instance of <see cref="Mp3AudioEncoderLame"/>.
/// </summary>
/// <param name="channelCount">Channel count.</param>
/// <param name="sampleRate">Sample rate (in samples per second).</param>
/// <param name="outputBitRateKbps">Output bit rate (in kilobits per second).</param>
/// <remarks>
/// Encoder expects audio data in 16-bit samples.
/// Stereo data should be interleaved: left sample first, right sample second.
/// </remarks>
public Mp3AudioEncoderLame(int channelCount, int sampleRate, int outputBitRateKbps)
{
Contract.Requires(channelCount == 1 || channelCount == 2);
Contract.Requires(sampleRate > 0);
Contract.Requires(SupportedBitRates.Contains(outputBitRateKbps));
if (lameFacadeType == null)
{
throw new InvalidOperationException("LAME DLL is not loaded. Call SetLameDllLocation first.");
}
lame = (ILameFacade)Activator.CreateInstance(lameFacadeType);
lame.ChannelCount = channelCount;
lame.InputSampleRate = sampleRate;
lame.OutputBitRate = outputBitRateKbps;
lame.PrepareEncoding();
formatData = FillFormatData();
}
/// <summary>
/// Creates a new instance of <see cref="Mp3LameAudioEncoder"/>.
/// </summary>
/// <param name="channelCount">Channel count.</param>
/// <param name="sampleRate">Sample rate (in samples per second).</param>
/// <param name="outputBitRateKbps">Output bit rate (in kilobits per second).</param>
/// <remarks>
/// Encoder expects audio data in 16-bit samples.
/// Stereo data should be interleaved: left sample first, right sample second.
/// </remarks>
public Mp3LameAudioEncoder(int channelCount, int sampleRate, int outputBitRateKbps)
{
Argument.IsInRange(channelCount, 1, 2, nameof(channelCount));
Argument.IsPositive(sampleRate, nameof(sampleRate));
Argument.Meets(SupportedBitRates.Contains(outputBitRateKbps), nameof(outputBitRateKbps));
lock (lameFacadeSync)
{
if (lameFacadeType is null)
{
throw new InvalidOperationException("LAME DLL is not loaded. Call SetLameDllLocation first.");
}
lame = (ILameFacade)Activator.CreateInstance(lameFacadeType);
}
lame.ChannelCount = channelCount;
lame.InputSampleRate = sampleRate;
lame.OutputBitRate = outputBitRateKbps;
lame.PrepareEncoding();
formatData = FillFormatData();
}
