private TilePartComponent[] DecodePackets(TilePartHeader tilePartHeader)
{
var tile = Image.Tiles[tilePartHeader.SOT.I_TileIndexNumber];
var tilePart = new TilePart(tile, tilePartHeader);
var tilePartComponents = new TilePartComponent[Image.Components.Length];
for (var iComponent = 0; iComponent < Image.Components.Length; iComponent++)
{
var tileComponent = tile.TileComponents[iComponent];
tilePartComponents[iComponent] = new TilePartComponent(tilePart, tileComponent);
}
var progressionOrder = tilePartHeader.COD.SG_ProgressionOrder;
if (progressionOrder == ProgressionOrder.LayerResolutionComponentPosition)
{
DecodePacketsInLayerResolutionComponentPositionOrder(tilePartHeader, tilePartComponents);
}
else
{
throw NotSupported(progressionOrder);
}
return(tilePartComponents);
}
private void DecodePacketsInLayerResolutionComponentPositionOrder(TilePartHeader tilePartHeader, TilePartComponent[] tilePartComponents)
{
var nLayers = tilePartHeader.COD.SG_NumberOfLayers;
ThrowIf(nLayers != 1);
var maxNDecompositionLevels = tilePartHeader.COC.Max(coc => coc.SP_NumberOfDecompositionLevels);
for (var iLayer = 0; iLayer < nLayers; iLayer++)
{
for (var iResolution = 0; iResolution <= maxNDecompositionLevels; iResolution++)
{
foreach (var tilePartComponent in tilePartComponents)
{
var resolutionLevel = tilePartComponent.ResolutionLevels[iResolution];
resolutionLevel.GetNPrecincts(out int nPrecinctsX, out int nPrecinctsY);
ThrowIf(nPrecinctsX != 1);
ThrowIf(nPrecinctsY != 1);
DecodePacket(iLayer, resolutionLevel);
}
}
}
}