/// <summary>
/// Initializes a new instance of the <see cref="AiffReader" /> class for the specified <paramref name="stream" />.
/// </summary>
/// <param name="stream">The stream to be decoded.</param>
/// <exception cref="System.ArgumentNullException">stream</exception>
/// <exception cref="System.ArgumentException">
/// Stream is not readable.;stream
/// or
/// Stream is not seekable.;stream
/// </exception>
/// <exception cref="CSCore.Codecs.AIFF.AiffException">
/// No COMM Chunk found.
/// or
/// No SSND Chunk found.
/// or
/// Format not supported.
/// </exception>
public AiffReader(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (!stream.CanRead)
{
throw new ArgumentException("Stream is not readable.", "stream");
}
if (!stream.CanSeek)
{
throw new ArgumentException("Stream is not seekable.", "stream");
}
_stream = stream;
_closeStream = true;
_chunkContainer = new AiffChunkContainer(new BinaryReader(_stream));
var commonChunk = (CommonChunk)_chunkContainer.Chunks.FirstOrDefault(x => x is CommonChunk);
if (commonChunk == null)
{
throw new AiffException("No COMM Chunk found.");
}
_soundDataChunk =
(SoundDataChunk)_chunkContainer.Chunks.FirstOrDefault(x => x is SoundDataChunk);
if (_soundDataChunk == null)
{
throw new AiffException("No SSND Chunk found.");
}
WaveFormat = commonChunk.GetWaveFormat();
if (WaveFormat.BitsPerSample != 8 &&
WaveFormat.BitsPerSample != 16 &&
WaveFormat.BitsPerSample != 24 &&
WaveFormat.BitsPerSample != 32)
{
throw new AiffException("Format not supported.",
new NotSupportedException(
string.Format("BitsPerSample of {0} is not supported. Must be 8, 16, 24 or 32 bits.",
WaveFormat.BitsPerSample)));
}
//Length = commonChunk.NumberOfSampleFrames * WaveFormat.BlockAlign;
//some encoders won't set the NumberOfSampleFrames field ... better prefer:
Length = _soundDataChunk.DataSize - 8; //sub the 2 SSND fields
Position = 0;
}
/// <summary>
/// Initializes a new instance of the <see cref="AiffReader" /> class for the specified <paramref name="stream" />.
/// </summary>
/// <param name="stream">The stream to be decoded.</param>
/// <exception cref="System.ArgumentNullException">stream</exception>
/// <exception cref="System.ArgumentException">
/// Stream is not readable.;stream
/// or
/// Stream is not seekable.;stream
/// </exception>
/// <exception cref="CSCore.Codecs.AIFF.AiffException">
/// No COMM Chunk found.
/// or
/// No SSND Chunk found.
/// or
/// Format not supported.
/// </exception>
public AiffReader(Stream stream)
{
if (stream == null)
throw new ArgumentNullException("stream");
if (!stream.CanRead)
throw new ArgumentException("Stream is not readable.", "stream");
if (!stream.CanSeek)
throw new ArgumentException("Stream is not seekable.", "stream");
_stream = stream;
_chunkContainer = new AiffChunkContainer(new BinaryReader(_stream));
var commonChunk = (CommonChunk) _chunkContainer.Chunks.FirstOrDefault(x => x is CommonChunk);
if (commonChunk == null)
throw new AiffException("No COMM Chunk found.");
_soundDataChunk =
(SoundDataChunk) _chunkContainer.Chunks.FirstOrDefault(x => x is SoundDataChunk);
if (_soundDataChunk == null)
throw new AiffException("No SSND Chunk found.");
WaveFormat = commonChunk.GetWaveFormat();
if (WaveFormat.BitsPerSample != 8 &&
WaveFormat.BitsPerSample != 16 &&
WaveFormat.BitsPerSample != 24 &&
WaveFormat.BitsPerSample != 32)
{
throw new AiffException("Format not supported.",
new NotSupportedException(
string.Format("BitsPerSample of {0} is not supported. Must be 8, 16, 24 or 32 bits.",
WaveFormat.BitsPerSample)));
}
//Length = commonChunk.NumberOfSampleFrames * WaveFormat.BlockAlign;
//some encoders won't set the NumberOfSampleFrames field ... better prefer:
Length = _soundDataChunk.DataSize - 8; //sub the 2 SSND fields
Position = 0;
}
