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some cleanup on terrain encoder

avinationmerge
UbitUmarov 2015-09-24 19:11:17 +01:00
parent f484773447
commit a6b8eb7bca
2 changed files with 63 additions and 182 deletions
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12
OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
View File

@ -1355,7 +1355,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
try
{
List<LayerDataPacket> packets = OpenSimTerrainCompressor.CreateTerrainPatchsPacket(terrData, px, py);
byte landPacketType;
if (terrData.SizeX > Constants.RegionSize || terrData.SizeY > Constants.RegionSize)
landPacketType = (byte)TerrainPatch.LayerType.LandExtended;
else
landPacketType = (byte)TerrainPatch.LayerType.Land;
List<LayerDataPacket> packets = OpenSimTerrainCompressor.CreateLayerDataPackets(terrData, px, py, landPacketType);
foreach(LayerDataPacket pkt in packets)
OutPacket(pkt, ThrottleOutPacketType.Land);
}
@ -1404,7 +1410,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (m_scene.RegionInfo.RegionSizeX > Constants.RegionSize || m_scene.RegionInfo.RegionSizeY > Constants.RegionSize)
layerType = (byte)TerrainPatch.LayerType.WindExtended;
// LayerDataPacket layerpack = TerrainCompressor.CreateLayerDataPacket(patches, (TerrainPatch.LayerType)layerType);
LayerDataPacket layerpack = OpenSimTerrainCompressor.CreateLayerDataPacket(patches, layerType,
(int)m_scene.RegionInfo.RegionSizeX, (int)m_scene.RegionInfo.RegionSizeY);
layerpack.Header.Zerocoded = true;
@ -1434,8 +1439,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (m_scene.RegionInfo.RegionSizeX > Constants.RegionSize || m_scene.RegionInfo.RegionSizeY > Constants.RegionSize)
layerType = (byte)TerrainPatch.LayerType.CloudExtended;
// LayerDataPacket layerpack = TerrainCompressor.CreateLayerDataPacket(patches, (TerrainPatch.LayerType)layerType);
LayerDataPacket layerpack = OpenSimTerrainCompressor.CreateLayerDataPacket(patches, layerType,
LayerDataPacket layerpack = OpenSimTerrainCompressor.CreateLayerDataPacket(patches, layerType,
(int)m_scene.RegionInfo.RegionSizeX, (int)m_scene.RegionInfo.RegionSizeY);
layerpack.Header.Zerocoded = true;
OutPacket(layerpack, ThrottleOutPacketType.Cloud);

233
OpenSim/Region/Framework/Scenes/TerrainCompressor.cs
View File

@ -63,19 +63,14 @@ namespace OpenSim.Region.ClientStack.LindenUDP
private const int POSITIVE_VALUE = 0x6;
private const int NEGATIVE_VALUE = 0x7;
private static readonly float[] DequantizeTable16 =
new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
private static readonly float[] DequantizeTable32 =
new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
private static readonly float[] CosineTable16 = new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
//private static readonly float[] CosineTable32 = new float[Constants.TerrainPatchSize * Constants.TerrainPatchSize];
private static readonly float[] CosineTable16 = new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
private static readonly int[] CopyMatrix16 = new int[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
private static readonly int[] CopyMatrix32 = new int[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
private static readonly float[] QuantizeTable16 =
new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
new float[Constants.TerrainPatchSize * Constants.TerrainPatchSize];
private static readonly float[] DequantizeTable16 =
new float[Constants.TerrainPatchSize * Constants.TerrainPatchSize];
static OpenSimTerrainCompressor()
{
@ -113,82 +108,66 @@ namespace OpenSim.Region.ClientStack.LindenUDP
return layer;
}
// Create a land packet for a single patch.
public static LayerDataPacket CreateLandPacket(TerrainData terrData, int patchX, int patchY)
public static void CreatePatch(BitPack output, float[] patchData, int x, int y, int pRegionSizeX, int pRegionSizeY)
{
int[] xPieces = new int[1];
int[] yPieces = new int[1];
xPieces[0] = patchX; // patch X dimension
yPieces[0] = patchY;
return CreateLandPacket(terrData, xPieces, yPieces);
}
public static LayerDataPacket CreateLandPacket(TerrainData terrData, int[] xPieces, int[] yPieces)
{
byte landPacketType = (byte)TerrainPatch.LayerType.Land;
if (terrData.SizeX > Constants.RegionSize || terrData.SizeY > Constants.RegionSize)
TerrainPatch.Header header = PrescanPatch(patchData);
header.QuantWBits = 136;
if (pRegionSizeX > Constants.RegionSize || pRegionSizeY > Constants.RegionSize)
{
landPacketType = (byte)TerrainPatch.LayerType.LandExtended;
header.PatchIDs = (y & 0xFFFF);
header.PatchIDs += (x << 16);
}
else
{
header.PatchIDs = (y & 0x1F);
header.PatchIDs += (x << 5);
}
return CreateLandPacket(terrData, xPieces, yPieces, landPacketType);
int wbits;
int[] patch = CompressPatch(patchData, header, 10, out wbits);
wbits = EncodePatchHeader(output, header, patch, Constants.RegionSize, Constants.RegionSize, wbits);
EncodePatch(output, patch, 0, wbits);
}
/// <summary>
/// Creates a LayerData packet for compressed land data given a full
/// simulator heightmap and an array of indices of patches to compress
/// </summary>
/// <param name="terrData">
/// Terrain data that can result in a meter square heightmap.
/// </param>
/// <param name="x">
/// Array of indexes in the grid of patches
/// for this simulator.
/// If creating a packet for multiple patches, there will be entries in
/// both the X and Y arrays for each of the patches.
/// For example if patches 1 and 17 are to be sent,
/// x[] = {1,1} and y[] = {0,1} which specifies the patches at
/// indexes <1,0> and <1,1> (presuming the terrain size is 16x16 patches).
/// </param>
/// <param name="y">
/// Array of indexes in the grid of patches.
/// </param>
/// <param name="type"></param>
/// <returns></returns>
public static LayerDataPacket CreateLandPacket(TerrainData terrData, int[] x, int[] y, byte type)
private static int[] CompressPatch(float[] patchData, TerrainPatch.Header header, int prequant, out int wbits)
{
LayerDataPacket layer = new LayerDataPacket();
layer.LayerID.Type = type;
float[] block = new float[Constants.TerrainPatchSize * Constants.TerrainPatchSize];
float oozrange = 1.0f / header.Range;
float range = (1 << prequant);
float premult = oozrange * range;
byte[] data = new byte[x.Length * Constants.TerrainPatchSize * Constants.TerrainPatchSize * 2];
BitPack bitpack = new BitPack(data, 0);
bitpack.PackBits(STRIDE, 16);
bitpack.PackBits(Constants.TerrainPatchSize, 8);
bitpack.PackBits(type, 8);
for (int i = 0; i < x.Length; i++)
CreatePatchFromHeightmap(bitpack, terrData, x[i], y[i]);
float sub = 0.5f * header.Range + header.DCOffset;
bitpack.PackBits(END_OF_PATCHES, 8);
int wordsize = (prequant - 2) & 0x0f;
header.QuantWBits = wordsize;
header.QuantWBits |= wordsize << 4;
layer.LayerData.Data = new byte[bitpack.BytePos + 1];
Buffer.BlockCopy(bitpack.Data, 0, layer.LayerData.Data, 0, bitpack.BytePos + 1);
int k = 0;
for (int j = 0; j < Constants.TerrainPatchSize; j++)
{
for (int i = 0; i < Constants.TerrainPatchSize; i++)
block[k++] = (patchData[j * Constants.TerrainPatchSize + i] - sub) * premult;
}
return layer;
float[] ftemp = new float[Constants.TerrainPatchSize * Constants.TerrainPatchSize];
int[] itemp = new int[Constants.TerrainPatchSize * Constants.TerrainPatchSize];
wbits = (prequant >> 1);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
DCTLine16(block, ftemp, o);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
wbits = DCTColumn16Wbits(ftemp, itemp, o, wbits);
return itemp;
}
public static List<LayerDataPacket> CreateTerrainPatchsPacket(TerrainData terrData, int[] x, int[] y)
// new using terrain data and patchs indexes
public static List<LayerDataPacket> CreateLayerDataPackets(TerrainData terrData, int[] x, int[] y, byte landPacketType)
{
List<LayerDataPacket> ret = new List<LayerDataPacket>();
// normal or large region
byte landPacketType;
if (terrData.SizeX > Constants.RegionSize || terrData.SizeY > Constants.RegionSize)
landPacketType = (byte)TerrainPatch.LayerType.LandExtended;
else
landPacketType = (byte)TerrainPatch.LayerType.Land;
//create packet and global header
LayerDataPacket layer = new LayerDataPacket();
@ -232,29 +211,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
return ret;
}
// Unused: left for historical reference.
// nopes.. in use by clouds and wind
public static void CreatePatch(BitPack output, float[] patchData, int x, int y, int pRegionSizeX, int pRegionSizeY)
{
TerrainPatch.Header header = PrescanPatch(patchData);
header.QuantWBits = 136;
if (pRegionSizeX > Constants.RegionSize || pRegionSizeY > Constants.RegionSize)
{
header.PatchIDs = (y & 0xFFFF);
header.PatchIDs += (x << 16);
}
else
{
header.PatchIDs = (y & 0x1F);
header.PatchIDs += (x << 5);
}
int wbits;
int[] patch = CompressPatch(patchData, header, 10, out wbits);
wbits = EncodePatchHeader(output, header, patch, Constants.RegionSize, Constants.RegionSize, wbits);
EncodePatch(output, patch, 0, wbits);
}
/// <summary>
/// Add a patch of terrain to a BitPacker
/// </summary>
@ -302,9 +258,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
output.PackBits(header.PatchIDs, 32);
else
output.PackBits(header.PatchIDs, 10);
// output.PackBits(NEGATIVE_VALUE, 3);
// output.PackBits(0x20, 6);
// and thats all
output.PackBits(ZERO_EOB, 2);
return;
@ -468,11 +422,14 @@ namespace OpenSim.Region.ClientStack.LindenUDP
}
}
private static int DCTColumn16Wbits(float[] linein, int[] lineout, int column, int wbits, int maxwbits)
private static int DCTColumn16Wbits(float[] linein, int[] lineout, int column, int wbits)
{
// input columns are in fact stored in lines now
bool dowbits = wbits != maxwbits;
const int maxwbits = 17; // per header encoding
bool dowbits = wbits < 17;
int wbitsMaxValue = 1 << wbits;
float total = 0.0f;
@ -484,7 +441,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
total += linein[inlinesptr + n];
}
// lineout[CopyMatrix16[column]] = (int)(OO_SQRT2 * total * oosob * QuantizeTable16[column]);
int tmp = (int) (OO_SQRT2*total*QuantizeTable16[column]);
lineout[CopyMatrix16[column]] = tmp;
@ -642,83 +598,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
}
}
public static float[] DecompressPatch(int[] patches, TerrainPatch.Header header, TerrainPatch.GroupHeader group)
{
float[] block = new float[group.PatchSize*group.PatchSize];
float[] output = new float[group.PatchSize*group.PatchSize];
int prequant = (header.QuantWBits >> 4) + 2;
int quantize = 1 << prequant;
float ooq = 1.0f/quantize;
float mult = ooq*header.Range;
float addval = mult*(1 << (prequant - 1)) + header.DCOffset;
if (group.PatchSize == Constants.TerrainPatchSize)
{
for (int n = 0; n < Constants.TerrainPatchSize*Constants.TerrainPatchSize; n++)
{
block[n] = patches[CopyMatrix16[n]]*DequantizeTable16[n];
}
float[] ftemp = new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
for (int o = 0; o < Constants.TerrainPatchSize; o++)
IDCTColumn16(block, ftemp, o);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
IDCTLine16(ftemp, block, o);
}
else
{
for (int n = 0; n < Constants.TerrainPatchSize*2*Constants.TerrainPatchSize*2; n++)
{
block[n] = patches[CopyMatrix32[n]]*DequantizeTable32[n];
}
Logger.Log("Implement IDCTPatchLarge", Helpers.LogLevel.Error);
}
for (int j = 0; j < block.Length; j++)
{
output[j] = block[j]*mult + addval;
}
return output;
}
private static int[] CompressPatch(float[] patchData, TerrainPatch.Header header, int prequant, out int wbits)
{
float[] block = new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
float oozrange = 1.0f/header.Range;
float range = (1 << prequant);
float premult = oozrange*range;
float sub = 0.5f * header.Range + header.DCOffset;
int wordsize = (prequant - 2) & 0x0f;
header.QuantWBits = wordsize;
header.QuantWBits |= wordsize << 4;
int k = 0;
for (int j = 0; j < Constants.TerrainPatchSize; j++)
{
for (int i = 0; i < Constants.TerrainPatchSize; i++)
block[k++] = (patchData[j*Constants.TerrainPatchSize + i] - sub) * premult;
}
float[] ftemp = new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
int[] itemp = new int[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
int maxWbits = prequant + 5;
wbits = (prequant >> 1);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
DCTLine16(block, ftemp, o);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
wbits = DCTColumn16Wbits(ftemp, itemp, o, wbits, maxWbits);
return itemp;
}
private static int[] CompressPatch(float[,] patchData, TerrainPatch.Header header, int prequant, out int wbits)
{
@ -743,13 +622,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
float[] ftemp = new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
int[] itemp = new int[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
int maxWbits = prequant + 5;
wbits = (prequant >> 1);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
DCTLine16(block, ftemp, o);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
wbits = DCTColumn16Wbits(ftemp, itemp, o, wbits, maxWbits);
wbits = DCTColumn16Wbits(ftemp, itemp, o, wbits);
return itemp;
}
@ -790,13 +668,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
float[] ftemp = new float[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
int[] itemp = new int[Constants.TerrainPatchSize*Constants.TerrainPatchSize];
int maxWbits = prequant + 5;
wbits = (prequant >> 1);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
DCTLine16(block, ftemp, o);
for (int o = 0; o < Constants.TerrainPatchSize; o++)
wbits = DCTColumn16Wbits(ftemp, itemp, o, wbits, maxWbits);
wbits = DCTColumn16Wbits(ftemp, itemp, o, wbits);
return itemp;
}