Read custom chunks from a midi file, when chunk header contains no size information

Hi. I have a midi file which contains one track with some nested chunks. One of the complex chunks (these ones contains multiple simple chunks or complex chunks, in a nested structure) contains information about waveform data, and the waveform data itself. Yes, wave data in midi file structure. The structure is like this:

AWav- ComplexChunk
    |- WAVE (no chunk size, only these 4 bytes, as a marker)
    |- Afmt SimpleChunk contains chunk size information
    |- Sfmt SimpleChunk contains chunk size information
etc...

using this code

public sealed class AWavChunk : ComplexChunk
    {
        public const string Id = "AWav";

        public AWavChunk() :
            base(Id, new ChunkTypesCollection
            {
                { typeof(WAVEChunk), WAVEChunk.Id },
                //{ typeof(AfmtChunk), AfmtChunk.Id },
                //{ typeof(SfmtChunk), SfmtChunk.Id },
                //{ typeof(SdecChunk), SdecChunk.Id },
                //{ typeof(AdatChunk), AdatChunk.Id },
                //{ typeof(AInfChunk), AInfChunk.Id }
            })
        {
        }

        public override MidiChunk Clone()
        {
            return new AWavChunk
            {
                Chunks = Chunks.Select(c => c.Clone()).ToList()
            };
        }
    }

I’m getting an InvalidChunkSizeException for WAVE chunk. (Actual size (1366657) of a WAVE chunk differs from the one declared in the chunk’s header (1097231732)). But, as I said, WAVE chunks does not have any size, they are only like markers in this midi file structure. If I comment { typeof(WAVEChunk), WAVEChunk.Id }, in the code above, and uncomment the others I get NotEnoughBytesException

the structure of SimpleChunk and ComplexChunk are the same from #100

[valimaties]

Thank you Maxim. Till I will make all classes which modifies my file to be able to save it, I will close this issue. In theory, it must work!

[melanchall]

protected override void ReadContent(MidiReader reader, ReadingSettings settings, uint size)
{
    reader.Position += 4; // skip WAVE marker
    base.ReadContent(reader, settings, size - 4);
}

protected override void WriteContent(MidiWriter writer, WritingSettings settings)
{
    writer.WriteString("WAVE");
    base.WriteContent(writer, settings);
}

protected override uint GetContentSize(WritingSettings settings)
{
    return base.GetContentSize(settings) + 4;
}