public void QueryResolutionRpclTest()
{
int resolutions = _rpclCodestream.DecompositionLevels + 1;
PreciseQuery q = PreciseQuery.Create(_queryContext);
IEnumerable <PacketInterval>[] intervals =
new IEnumerable <PacketInterval> [resolutions];
for (int r = 0; r < resolutions; r++)
{
intervals[r] = q.Resolution(r).Execute();
}
int packetStart = 0;
int layersMulComps =
_rpclCodestream.QualityLayers * _rpclCodestream.Components;
for (int r = 0; r < resolutions; r++)
{
int packetsInResolution = layersMulComps;
// NOTE TO SELF: I can calculate everything
// programatically, but then I would duplicate
// the code that I need to test, and may
// have two places with possible bugs.
PacketInterval[] ivals = intervals[r].ToArray();
Assert.AreEqual(ivals.Length, 1);
PacketInterval ival = ivals[0];
var cod = _rpclCodestream.Markers[MarkerType.COD] as CodMarker;
int precinctsInRes = GetPrecinctsInResolution(r, cod);
packetsInResolution *= precinctsInRes;
Assert.AreEqual(packetStart, ival.PacketStart);
Assert.AreEqual(packetsInResolution, ival.Count);
packetStart += packetsInResolution;
}
}
public void QueryResolutionLrcpTest()
{
int resIdx = 1;
int precinctsInResolution = 1;
int layers = 2;
int components = 3;
int resolutions = 3;
int packetsInLayerResolution = precinctsInResolution * components;
int packetsInLayer = packetsInLayerResolution * resolutions;
int expectedStartInLayer = resIdx * packetsInLayerResolution;
int[] expectedStarts = new int[layers];
for (int ly = 0; ly < layers; ly++)
{
expectedStarts[ly] = ly * packetsInLayer;
expectedStarts[ly] += expectedStartInLayer;
}
PreciseQuery q = PreciseQuery.Create(_queryContext);
PacketInterval[] intervals = q
.Resolution(resIdx)
.Execute()
.ToArray();
Assert.AreEqual(intervals.Length, layers);
for (int ly = 0; ly < layers; ly++)
{
Assert.AreEqual(intervals[ly].PacketStart, expectedStarts[ly]);
Assert.AreEqual(intervals[ly].Count, packetsInLayerResolution);
}
}
private void CopyTileResLevel(JP2Codestream dst, JP2Codestream src, ushort tIdx, int r)
{
int decomps = src.DecompositionLevels;
var dstTilePart = dst.CreateTilePart(tIdx, r == decomps);
// get all packets for this resolution level and source tile
// currently support only a single tile in source image for every
// destination tile.
QueryContext queryContext = new QueryContext(src, 0);
PreciseQuery preciseQuery = PreciseQuery.Create(queryContext);
var intervals = preciseQuery
.Resolution(r)
.Execute();
JP2Tile srcTile = src.Tiles[0];
// add packet lengths
Func <JP2TilePart, int, int, int, int> addPacketLengths =
(tpSrc, pckStart, pckCount, voidParam) =>
{
var lengths = tpSrc.GetPacketLengths(pckStart, pckCount);
dstTilePart.AddPacketLengths(lengths);
return(voidParam);
};
EnumerateIntervals <int>(intervals, srcTile, addPacketLengths);
// bulk transfer packet data
dstTilePart.Flush();
byte[] buffer = new byte[1 << 16];
Func <JP2TilePart, int, int, uint, uint> bulkTransfer =
(tpSrc, pckStart, pckCount, dstOffset) =>
{
uint dataCount = JP2TilePart.BulkTransferData(
dstTilePart,
dstOffset,
tpSrc,
pckStart,
pckCount,
buffer);
return(dstOffset + dataCount);
};
EnumerateIntervals <uint>(
intervals,
srcTile,
bulkTransfer);
dstTilePart.Close();
srcTile.Close();
}