private void ReadMdia(ref TrakInfo trackData, BoxInfo mdiaBox)
{
var maxLen = mdiaBox.BoxOffset + mdiaBox.Offset;
BoxInfo?box = null;
do
{
box = NextBox(maxLen);
if (box != null)
{
if (box.Value.Type.Check(mdhd))
{
ReadMdhd(ref trackData);
}
if (box.Value.Type.Check(hdlr))
{
ReadHdlr(ref trackData);
}
if (box.Value.Type.Check(minf))
{
ReadMinf(ref trackData, box.Value);
}
SeekNext(box.Value);
}
} while (!(box == null || box.Value.Last));
}
private TrakInfo ReadTrak(BoxInfo trakBox)
{
var maxLen = trakBox.BoxOffset + trakBox.Offset;
var trakData = new TrakInfo();
BoxInfo?box = null;
do
{
box = NextBox(maxLen);
if (box != null)
{
if (box.Value.Type.Check(tkhd))
{
ReadTkhd(ref trakData);
}
if (box.Value.Type.Check(mdia))
{
ReadMdia(ref trakData, box.Value);
}
if (box.Value.Type.Check(tref))
{
ReadTref(ref trakData, box.Value);
}
SeekNext(box.Value);
}
} while (!(box == null || box.Value.Last));
return(trakData);
}
private void ReadChap(ref TrakInfo trakData, BoxInfo box2)
{
var len = (box2.Offset - 8) / 4;
if (len > 0 && len < 1024)
{
trakData.Chaps = new uint[len];
for (uint i = 0; i < len; i++)
{
trakData.Chaps[i] = ReadUint32();
}
}
}
private void ReadMinf(ref TrakInfo trakData, BoxInfo box2)
{
var maxLen = box2.BoxOffset + box2.Offset;
BoxInfo?box = null;
do
{
box = NextBox(maxLen);
if (box != null)
{
if (box.Value.Type.Check(stbl))
{
ReadStbl(ref trakData, box.Value);
}
SeekNext(box.Value);
}
} while (!(box == null || box.Value.Last));
}
private void SeekNext(BoxInfo box)
{
stream.Seek(SeekOrigin.Begin, box.BoxOffset);
stream.Seek(SeekOrigin.Current, box.Offset);
}