| public Write ( byte buffer, int offset, int count ) : void | ||
| buffer | byte | Source buffer |
| offset | int | Offset of data in buffer |
| count | int | Length of data |
| return | void | |
private void WriteFrame(FrameDecompressedEventArgs <Mp3Frame> e)
{
if (State != StreamRecorderStates.Recording)
{
return;
}
if (e.DecompressedDataLen <= 0)
{
return;
}
if (_mp3writer == null)
{
_mp3writer = new LameMP3FileWriter(
_fileStream,
e.DecompressedFormat,
e.Frame.BitRate,
new ID3TagData {
Title = $"{e.StreamSource.DisplayName} ({DateTime.Now.ToString()})",
Comment = e.StreamSource.StreamUrl
}
);
}
_mp3writer.Write(e.DecompressedData, 0, e.DecompressedDataLen);
}
private void splitMp3(string trackPath, int startPos, int endPos, MediaFoundationReader reader, ID3TagData tagData)
{
int progress = 0;
using (var writer = new NAudio.Lame.LameMP3FileWriter(trackPath, reader.WaveFormat, NAudio.Lame.LAMEPreset.V3, tagData))
{
reader.Position = startPos;
byte[] buffer = new byte[1024];
while (reader.Position < endPos)
{
int bytesRequired = (int)(endPos - reader.Position);
if (bytesRequired > 0)
{
int bytesToRead = Math.Min(bytesRequired, buffer.Length);
int bytesRead = reader.Read(buffer, 0, bytesToRead);
if (bytesRead > 0)
{
writer.Write(buffer, 0, bytesRead);
progress += bytesRead;
}
}
}
}
}
internal static void CreateMp3File(string filename, IWaveProvider sourceProvider, int bitRate, Action<long> progressCallback)
{
Debug.Assert(progressCallback != null);
using (var writer = new LameMP3FileWriter(filename, sourceProvider.WaveFormat, bitRate))
{
long outputLength = 0;
var buffer = new byte[sourceProvider.WaveFormat.AverageBytesPerSecond * 4];
while (true)
{
int bytesRead = sourceProvider.Read(buffer, 0, buffer.Length);
if (bytesRead == 0)
{
// end of source provider
break;
}
outputLength += bytesRead;
// Write will throw exception if WAV file becomes too large
writer.Write(buffer, 0, bytesRead);
progressCallback(bytesRead);
}
}
}