private void ReadDvbSBlock(ref int off)
{
int blockSize;
if (!IsDvbsBlock(ref off, out blockSize))
return;
this.dvbsBlockSize = blockSize;
this.dvbsBlockOffset = off;
off += 4;
this.satConfig = this.satConfigs.TryGet(blockSize);
if (satConfig != null)
this.ReadDvbsSubblocks(ref off);
else
{
this.DataRoot.Warnings.AppendFormat("DVB-S data format is not supported (size={0})\n", blockSize);
off += blockSize;
}
}
private bool IsDvbsBlock(ref int off, out int blockSize)
{
blockSize = 0;
if (off >= fileContent.Length)
return false;
blockSize = this.GetBlockSize(off);
if (blockSize < 12)
return false;
long blockId = BitConverter.ToInt64(fileContent, off + 8);
if (blockId == DVBS_S2)
return true;
// LW4500, LW5400, LMxxxT and maybe other models with bogus DVB-S block
if (blockId == -1)
{
this.satConfig = satConfigs.TryGet(blockSize);
if (this.satConfig != null)
{
this.dvbsBlockSize = blockSize;
this.dvbsBlockOffset = off;
off += 4 + blockSize;
}
}
return false;
}