//Compute the difference tile dwt
public static void SubBandDiffing_DT(RfxProgressiveCodecContext encodingContext, TileState enTileInfo)
{
if (encodingContext.UseDifferenceTile)
{
DwtTile oldDwt = enTileInfo.GetOldDwt();
if (oldDwt != null)
{
short[] yDiffDwt, cbDiffDwt, crDiffDwt;
int lenOfNonLL3Band = (RdpegfxTileUtils.ComponentElementCount - RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, encodingContext.UseReduceExtrapolate));// ? 81 : 64;
int yNewZeroCount, cbNewZeroCount, crNewZeroCount;
int yDiffZeroCount, cbDiffZeroCount, crDiffZeroCount;
yDiffDwt = RdpegfxTileUtils.SubDiffingDwt(encodingContext.YComponent, oldDwt.Y_DwtQ, lenOfNonLL3Band, out yNewZeroCount, out yDiffZeroCount);
cbDiffDwt = RdpegfxTileUtils.SubDiffingDwt(encodingContext.CbComponent, oldDwt.Cb_DwtQ, lenOfNonLL3Band, out cbNewZeroCount, out cbDiffZeroCount);
crDiffDwt = RdpegfxTileUtils.SubDiffingDwt(encodingContext.CrComponent, oldDwt.Cr_DwtQ, lenOfNonLL3Band, out crNewZeroCount, out crDiffZeroCount);
if ((yDiffDwt != null && cbDiffDwt != null && crDiffDwt != null) &&
(yNewZeroCount + cbNewZeroCount + crNewZeroCount < yDiffZeroCount + cbDiffZeroCount + crDiffZeroCount))
{//use difference tile
encodingContext.YComponent = yDiffDwt;
encodingContext.CbComponent = cbDiffDwt;
encodingContext.CrComponent = crDiffDwt;
return;
}
}
}
encodingContext.UseDifferenceTile = false;//use orginal tile
}
/// <summary>
/// Encode the surface with Progressive Codec
/// </summary>
/// <param name="quality">The target encoded quality.</param>
/// <param name="bProg">Indicates if encode progressively</param>
/// <param name="bSubDiff">Indicates if sub-diffing with last frame of this surface</param>
/// <param name="bReduceExtrapolate">Indicates if use Reduce Extrapolate method in DWT step.</param>
/// <returns>The dictionary of tile index and encoded tile datas.</returns>
public Dictionary <TileIndex, EncodedTile[]> ProgressiveEncode(ImageQuality_Values quality, bool bProg, bool bSubDiff, bool bReduceExtrapolate, bool ignoreUnchangedTile = true)
{
Dictionary <TileIndex, EncodedTile[]> encodedTileDic = new Dictionary <TileIndex, EncodedTile[]>();
TS_RFX_CODEC_QUANT quant = RdpegfxTileUtils.GetCodecQuant(quality);
TileIndex[] tileIndexArr;
if (!ignoreUnchangedTile)
{
tileIndexArr = GetAllIndexes();
}
else
{
tileIndexArr = GetDiffIndexes(true);
}
foreach (TileIndex index in tileIndexArr)
{
RfxProgressiveCodecContext codecContext = new RfxProgressiveCodecContext(
new TS_RFX_CODEC_QUANT[] { quant },
0, // quantization index of Y, set this paramter to 0 since only one quantization value in the array
0, // quantization index of Cb
0, // quantization index of Cr
bProg, //progressive
bSubDiff, //sub-diffing
bReduceExtrapolate); //reduce extrapolate
TileState tState = new TileState(this, index);
encodedTileDic.Add(index, RfxProgressiveEncoder.EncodeTile(codecContext, tState));
}
return(encodedTileDic);
}
public static void ComputeOriginalLL3FromDeltas(RfxProgressiveCodecContext codecContext)
{
int ll3Len = RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, codecContext.UseReduceExtrapolate);
int ll3Idx = RdpegfxTileUtils.ComponentElementCount - ll3Len;
for (int i = ll3Idx + 1; i < RdpegfxTileUtils.ComponentElementCount; i++)
{
codecContext.YComponent[i] = (short)(codecContext.YComponent[i] + codecContext.YComponent[i - 1]);
codecContext.CbComponent[i] = (short)(codecContext.CbComponent[i] + codecContext.CbComponent[i - 1]);
codecContext.CrComponent[i] = (short)(codecContext.CrComponent[i] + codecContext.CrComponent[i - 1]);
}
}
public static void ComputeOriginalLL3FromDeltas(RfxProgressiveCodecContext codecContext)
{
int ll3Len = RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, codecContext.UseReduceExtrapolate);
int ll3Idx = RdpegfxTileUtils.ComponentElementCount - ll3Len;
for (int i = ll3Idx + 1; i < RdpegfxTileUtils.ComponentElementCount; i++)
{
codecContext.YComponent[i] = (short)(codecContext.YComponent[i] + codecContext.YComponent[i - 1]);
codecContext.CbComponent[i] = (short)(codecContext.CbComponent[i] + codecContext.CbComponent[i - 1]);
codecContext.CrComponent[i] = (short)(codecContext.CrComponent[i] + codecContext.CrComponent[i - 1]);
}
}
public static void ComputeLL3Deltas(RfxProgressiveCodecContext encodingContext)
{
int ll3Len = RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, encodingContext.UseReduceExtrapolate);
int ll3Idx = RdpegfxTileUtils.ComponentElementCount - ll3Len;
//for (int i = ll3Idx + 1; i < TileUtils.ComponentElementCount; i++)
for (int i = RdpegfxTileUtils.ComponentElementCount - 1; i >= ll3Idx + 1; i--)
{
encodingContext.YComponent[i] = (short)(encodingContext.YComponent[i] - encodingContext.YComponent[i - 1]);
encodingContext.CbComponent[i] = (short)(encodingContext.CbComponent[i] - encodingContext.CbComponent[i - 1]);
encodingContext.CrComponent[i] = (short)(encodingContext.CrComponent[i] - encodingContext.CrComponent[i - 1]);
}
}
public static void ComputeLL3Deltas(RfxProgressiveCodecContext encodingContext)
{
int ll3Len = RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, encodingContext.UseReduceExtrapolate);
int ll3Idx = RdpegfxTileUtils.ComponentElementCount - ll3Len;
//for (int i = ll3Idx + 1; i < TileUtils.ComponentElementCount; i++)
for (int i = RdpegfxTileUtils.ComponentElementCount - 1; i >= ll3Idx + 1; i--)
{
encodingContext.YComponent[i] = (short)(encodingContext.YComponent[i] - encodingContext.YComponent[i - 1]);
encodingContext.CbComponent[i] = (short)(encodingContext.CbComponent[i] - encodingContext.CbComponent[i - 1]);
encodingContext.CrComponent[i] = (short)(encodingContext.CrComponent[i] - encodingContext.CrComponent[i - 1]);
}
}
static DwtTile GetDTS(RfxProgressiveCodecContext encodingContext, ProgressiveChunk_Values chunk)
{
DwtBands yBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Y_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands cbBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cb_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands crBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cr_DwtQ, encodingContext.UseReduceExtrapolate);
DTS_Component(yBD, TileComponents.Y, chunk);
DTS_Component(cbBD, TileComponents.Cb, chunk);
DTS_Component(crBD, TileComponents.Cr, chunk);
DwtTile dwtDts = new DwtTile(yBD.GetLinearizationData(), cbBD.GetLinearizationData(), crBD.GetLinearizationData());
return(dwtDts);
}
public static void ProgressiveQuantization(RfxProgressiveCodecContext encodingContext, ProgressiveChunk_Values chunk)
{
DwtBands yBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Y_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands cbBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cb_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands crBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cr_DwtQ, encodingContext.UseReduceExtrapolate);
ProgressiveQuantization_Component(yBD, TileComponents.Y, chunk);
ProgressiveQuantization_Component(cbBD, TileComponents.Cb, chunk);
ProgressiveQuantization_Component(crBD, TileComponents.Cr, chunk);
DwtTile dwtDts = new DwtTile(yBD.GetLinearizationData(), cbBD.GetLinearizationData(), crBD.GetLinearizationData());
encodingContext.ProgQ = dwtDts;
//Compute DTS
encodingContext.DTS = GetDTS(encodingContext, chunk);
}
/// <summary>
/// Decode a tile from DWT
/// </summary>
/// <param name="codecContext">The codec context which contains the DWT data of a tile.</param>
public static void DecodeTileFromDwtQ(RfxProgressiveCodecContext codecContext)
{
//Sub Band Reconstruction
SubBandReconstruction(codecContext);
//De-quantization
Dequantization(codecContext);
//Inverse DWT
if (codecContext.UseReduceExtrapolate)
{
InverseDWT(codecContext);
}
else
{
RemoteFXDecoder.InverseDWT(codecContext);
}
//(Y, U, V) to (R, G, B)
RemoteFXDecoder.YCbCrToRGB(codecContext);
}
/// <summary>
/// Decode and Render the tile to an image
/// </summary>
/// <returns>The image rendered from tile</returns>
public Bitmap ToImage()
{
Bitmap tileImg = new Bitmap(RdpegfxTileUtils.TileSize, RdpegfxTileUtils.TileSize);
RfxProgressiveCodecContext codecContext = new RfxProgressiveCodecContext(this.CodecQuantVals, this.QuantIdxY, this.QuantIdxCb, this.QuantIdxCr, UseReduceExtrapolate);
codecContext.YComponent = new short[Y_DwtQ.Length];
codecContext.CbComponent = new short[Cb_DwtQ.Length];
codecContext.CrComponent = new short[Cr_DwtQ.Length];
Y_DwtQ.CopyTo(codecContext.YComponent, 0);
Cb_DwtQ.CopyTo(codecContext.CbComponent, 0);
Cr_DwtQ.CopyTo(codecContext.CrComponent, 0);
RfxProgressiveDecoder.DecodeTileFromDwtQ(codecContext);
BitmapData bmpData = tileImg.LockBits(new Rectangle(0, 0, tileImg.Width, tileImg.Height), ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
unsafe
{
byte *cusor = (byte *)bmpData.Scan0.ToPointer();
for (int y = 0; y < bmpData.Height; y++)
{
for (int x = 0; x < bmpData.Width; x++)
{
cusor[0] = codecContext.BSet[x, y];
cusor[1] = codecContext.GSet[x, y];
cusor[2] = codecContext.RSet[x, y];
cusor += 3;
}
cusor += (bmpData.Stride - 3 * (bmpData.Width));
}
}
tileImg.UnlockBits(bmpData);
return(tileImg);
}
public static void Linearization_NoLL3Delta(RfxProgressiveCodecContext encodingContext)
{
linearization_Compontent(encodingContext.YSet, encodingContext.UseReduceExtrapolate, out encodingContext.YComponent);
linearization_Compontent(encodingContext.CbSet, encodingContext.UseReduceExtrapolate, out encodingContext.CbComponent);
linearization_Compontent(encodingContext.CrSet, encodingContext.UseReduceExtrapolate, out encodingContext.CrComponent);
}
public static void Quantization(RfxProgressiveCodecContext encodingContext)
{
doQuantization_Component(encodingContext.YSet, encodingContext.CodecQuantVals[encodingContext.QuantIdxY], encodingContext.UseReduceExtrapolate);
doQuantization_Component(encodingContext.CbSet, encodingContext.CodecQuantVals[encodingContext.QuantIdxCb], encodingContext.UseReduceExtrapolate);
doQuantization_Component(encodingContext.CrSet, encodingContext.CodecQuantVals[encodingContext.QuantIdxCr], encodingContext.UseReduceExtrapolate);
}
/// <summary>
/// Encode a Tile
/// </summary>
/// <param name="encodingContext">The tile encoding context</param>
/// <param name="enTileInfo">The tile to be encoded</param>
/// <returns>A array of CompressedTile which contains the encoded tiles</returns>
public static EncodedTile[] EncodeTile(RfxProgressiveCodecContext encodingContext, TileState enTileInfo)
{
EncodedTileType targetType = encodingContext.UseProgressive ? EncodedTileType.FirstPass : EncodedTileType.Simple;
//File RGB
FillRgbData(encodingContext, enTileInfo.GetRgb());
//Do color conversion
RemoteFXEncoder.RGBToYCbCr(encodingContext);
//Do DWT
if (encodingContext.UseReduceExtrapolate)
{
//Do DWT using UseReduce Extrapolate method
DWT(encodingContext);
}
else
{
RemoteFXEncoder.DWT(encodingContext);
}
//Do quantiztion
Quantization(encodingContext);
//Do linearization (LL3 delta not computed)
Linearization_NoLL3Delta(encodingContext);
//Update new DWT to tile
DwtTile dwt = new DwtTile(
(short[])encodingContext.YComponent.Clone(),
(short[])encodingContext.CbComponent.Clone(),
(short[])encodingContext.CrComponent.Clone(),
encodingContext.CodecQuantVals,
encodingContext.QuantIdxY,
encodingContext.QuantIdxCb,
encodingContext.QuantIdxCr,
encodingContext.UseReduceExtrapolate
);
enTileInfo.UpdateDwt(dwt);
//Sub-Band Diffing
if (encodingContext.UseDifferenceTile)
{
SubBandDiffing_DT(encodingContext, enTileInfo);
}
if (targetType == EncodedTileType.Simple)
{
ComputeLL3Deltas(encodingContext);
RemoteFXEncoder.RLGREncode(encodingContext);
EncodedTile cpTile = new EncodedTile();
cpTile.YEncodedData = (byte[])encodingContext.YData.Clone();
cpTile.CbEncodedData = (byte[])encodingContext.CbData.Clone();
cpTile.CrEncodedData = (byte[])encodingContext.CrData.Clone();
cpTile.DataType = EncodedTileType.Simple;
cpTile.IsDifferenceTile = encodingContext.UseDifferenceTile;
cpTile.UseReduceExtrapolate = encodingContext.UseReduceExtrapolate;
cpTile.CodecQuantVals = encodingContext.CodecQuantVals;
cpTile.QuantIdxY = encodingContext.QuantIdxY;
cpTile.QuantIdxCb = encodingContext.QuantIdxCb;
cpTile.QuantIdxCr = encodingContext.QuantIdxCr;
cpTile.ProgCodecQuant = null;
return(new EncodedTile[] { cpTile });
}
else
{
List <EncodedTile> progCTileList = new List <EncodedTile>();
//Init DRS, DAS
encodingContext.DRS = new DwtTile(encodingContext.YComponent, encodingContext.CbComponent, encodingContext.CrComponent);
encodingContext.DAS = new DwtTile(new short[RdpegfxTileUtils.ComponentElementCount], new short[RdpegfxTileUtils.ComponentElementCount], new short[RdpegfxTileUtils.ComponentElementCount]);
#region Chunk 25, first pass
ProgressiveQuantization(encodingContext, ProgressiveChunk_Values.kChunk_25);
//Compute ProgQ LL3 deltas
encodingContext.YComponent = encodingContext.ProgQ.Y_DwtQ;
encodingContext.CbComponent = encodingContext.ProgQ.Cb_DwtQ;
encodingContext.CrComponent = encodingContext.ProgQ.Cr_DwtQ;
ComputeLL3Deltas(encodingContext);
RemoteFXEncoder.RLGREncode(encodingContext);
EncodedTile firstPassTile = new EncodedTile();
firstPassTile.YEncodedData = (byte[])encodingContext.YData.Clone();
firstPassTile.CbEncodedData = (byte[])encodingContext.CbData.Clone();
firstPassTile.CrEncodedData = (byte[])encodingContext.CrData.Clone();
firstPassTile.DataType = EncodedTileType.FirstPass;
firstPassTile.IsDifferenceTile = encodingContext.UseDifferenceTile;
firstPassTile.UseReduceExtrapolate = encodingContext.UseReduceExtrapolate;
firstPassTile.CodecQuantVals = encodingContext.CodecQuantVals;
firstPassTile.QuantIdxY = encodingContext.QuantIdxY;
firstPassTile.QuantIdxCb = encodingContext.QuantIdxCb;
firstPassTile.QuantIdxCr = encodingContext.QuantIdxCr;
firstPassTile.ProgCodecQuant = RdpegfxTileUtils.GetProgCodecQuant(ProgressiveChunk_Values.kChunk_25);
progCTileList.Add(firstPassTile);
encodingContext.prevProgQuant = RdpegfxTileUtils.GetProgCodecQuant(ProgressiveChunk_Values.kChunk_25);
//Update DRS
encodingContext.DRS.Sub(encodingContext.DTS);
//Update DAS
encodingContext.DAS.Add(encodingContext.DTS);
#endregion
#region Chunk 50,75,100, upgrade pass
ProgressiveChunk_Values[] upgradeChunks = { ProgressiveChunk_Values.kChunk_50, ProgressiveChunk_Values.kChunk_75, ProgressiveChunk_Values.kChunk_100 };
foreach (ProgressiveChunk_Values tChunk in upgradeChunks)
{
ProgressiveQuantization(encodingContext, tChunk);
RFX_PROGRESSIVE_CODEC_QUANT progquant = RdpegfxTileUtils.GetProgCodecQuant(tChunk);
progCTileList.Add(SRLEncode(encodingContext, progquant));
//Update DRS
encodingContext.DRS.Sub(encodingContext.DTS);
//Update DAS
encodingContext.DAS.Add(encodingContext.DTS);
encodingContext.prevProgQuant = progquant;
}
return(progCTileList.ToArray());
#endregion
}
}
public static void Dequantization(RfxProgressiveCodecContext codecContext)
{
dequantization_Component(codecContext.YSet, codecContext.CodecQuantVals[codecContext.QuantIdxY], codecContext.UseReduceExtrapolate);
dequantization_Component(codecContext.CbSet, codecContext.CodecQuantVals[codecContext.QuantIdxCb], codecContext.UseReduceExtrapolate);
dequantization_Component(codecContext.CrSet, codecContext.CodecQuantVals[codecContext.QuantIdxCr], codecContext.UseReduceExtrapolate);
}
static DwtTile GetDTS(RfxProgressiveCodecContext encodingContext, ProgressiveChunk_Values chunk)
{
DwtBands yBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Y_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands cbBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cb_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands crBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cr_DwtQ, encodingContext.UseReduceExtrapolate);
DTS_Component(yBD, TileComponents.Y, chunk);
DTS_Component(cbBD, TileComponents.Cb, chunk);
DTS_Component(crBD, TileComponents.Cr, chunk);
DwtTile dwtDts = new DwtTile(yBD.GetLinearizationData(), cbBD.GetLinearizationData(), crBD.GetLinearizationData());
return dwtDts;
}
public static void SubBandReconstruction(RfxProgressiveCodecContext codecContext)
{
reconstruction_Component(codecContext.YComponent, out codecContext.YSet, codecContext.UseReduceExtrapolate);
reconstruction_Component(codecContext.CbComponent, out codecContext.CbSet, codecContext.UseReduceExtrapolate);
reconstruction_Component(codecContext.CrComponent, out codecContext.CrSet, codecContext.UseReduceExtrapolate);
}
//InverseDWT
public static void InverseDWT(RfxProgressiveCodecContext codecContext)
{
InverseDWT_Component(codecContext.YSet);
InverseDWT_Component(codecContext.CbSet);
InverseDWT_Component(codecContext.CrSet);
}
public static void Quantization(RfxProgressiveCodecContext encodingContext)
{
doQuantization_Component(encodingContext.YSet, encodingContext.CodecQuantVals[encodingContext.QuantIdxY], encodingContext.UseReduceExtrapolate);
doQuantization_Component(encodingContext.CbSet, encodingContext.CodecQuantVals[encodingContext.QuantIdxCb], encodingContext.UseReduceExtrapolate);
doQuantization_Component(encodingContext.CrSet, encodingContext.CodecQuantVals[encodingContext.QuantIdxCr], encodingContext.UseReduceExtrapolate);
}
public static void Linearization_NoLL3Delta(RfxProgressiveCodecContext encodingContext)
{
linearization_Compontent(encodingContext.YSet, encodingContext.UseReduceExtrapolate, out encodingContext.YComponent);
linearization_Compontent(encodingContext.CbSet, encodingContext.UseReduceExtrapolate, out encodingContext.CbComponent);
linearization_Compontent(encodingContext.CrSet, encodingContext.UseReduceExtrapolate, out encodingContext.CrComponent);
}
/// <summary>
/// Decode an encoded tile
/// </summary>
/// <param name="enTile">Represents an encoded tile.</param>
/// <param name="tState">The context state of the tile that going to be decoded.</param>
public static void DecodeTile(EncodedTile enTile, TileState tState)
{
RfxProgressiveCodecContext codecContext = new RfxProgressiveCodecContext(
enTile.CodecQuantVals,
enTile.QuantIdxY,
enTile.QuantIdxCb,
enTile.QuantIdxCr,
enTile.DataType == EncodedTileType.Simple ? false : true,
enTile.IsDifferenceTile,
enTile.UseReduceExtrapolate);
//RLGR/SRL Decode
if (enTile.DataType == EncodedTileType.FirstPass || enTile.DataType == EncodedTileType.Simple)
{ //first pass or simple
codecContext.YData = enTile.YEncodedData;
codecContext.CbData = enTile.CbEncodedData;
codecContext.CrData = enTile.CrEncodedData;
RemoteFXDecoder.RLGRDecode(codecContext);
ComputeOriginalLL3FromDeltas(codecContext);
}
else
{
SRLDecode(codecContext, enTile, tState);
}
//Progressive Dequantization
if (enTile.DataType != EncodedTileType.Simple)
{
ProgressiveDeQuantization(codecContext, enTile.ProgCodecQuant);
}
// Create a DwtTile instance for tri-state
DwtTile triStateDwt = new DwtTile(codecContext.YComponent, codecContext.CbComponent, codecContext.CrComponent,
enTile.CodecQuantVals, enTile.QuantIdxY, enTile.QuantIdxCb, enTile.QuantIdxCr, enTile.UseReduceExtrapolate, enTile.ProgCodecQuant);
//Set Tri-State for progressive codec
if (enTile.DataType == EncodedTileType.FirstPass)
{
//DwtTile tileTriStat = SetTriState(diffDwt, enTile.UseReduceExtrapolate);
tState.UpdateTriState(triStateDwt);
}
else if (enTile.DataType == EncodedTileType.UpgradePass)
{
DwtTile prvStat = tState.GetTriState();
prvStat.Add(triStateDwt);
// update ProCodecQuant
prvStat.ProgCodecQuant = triStateDwt.ProgCodecQuant;
tState.UpdateTriState(prvStat);
}
// Create another DwtTile instance for DWT Data.
// The data in diffDwt is the same as triStateDwt, this will makesure the DWT data and tri-state not share the same DWT tile instance
DwtTile diffDwt = new DwtTile(codecContext.YComponent, codecContext.CbComponent, codecContext.CrComponent,
enTile.CodecQuantVals, enTile.QuantIdxY, enTile.QuantIdxCb, enTile.QuantIdxCr, enTile.UseReduceExtrapolate, enTile.ProgCodecQuant);
//Sum difference
if ( enTile.IsDifferenceTile || enTile.DataType == EncodedTileType.UpgradePass)
{
tState.AddDwt(diffDwt);
}
else
{
tState.UpdateDwt(diffDwt);
}
}
public static void SubBandReconstruction(RfxProgressiveCodecContext codecContext)
{
reconstruction_Component(codecContext.YComponent, out codecContext.YSet, codecContext.UseReduceExtrapolate);
reconstruction_Component(codecContext.CbComponent, out codecContext.CbSet, codecContext.UseReduceExtrapolate);
reconstruction_Component(codecContext.CrComponent, out codecContext.CrSet, codecContext.UseReduceExtrapolate);
}
/// <summary>
/// Decode an encoded tile
/// </summary>
/// <param name="enTile">Represents an encoded tile.</param>
/// <param name="tState">The context state of the tile that going to be decoded.</param>
public static void DecodeTile(EncodedTile enTile, TileState tState)
{
RfxProgressiveCodecContext codecContext = new RfxProgressiveCodecContext(
enTile.CodecQuantVals,
enTile.QuantIdxY,
enTile.QuantIdxCb,
enTile.QuantIdxCr,
enTile.DataType == EncodedTileType.Simple ? false : true,
enTile.IsDifferenceTile,
enTile.UseReduceExtrapolate);
//RLGR/SRL Decode
if (enTile.DataType == EncodedTileType.FirstPass || enTile.DataType == EncodedTileType.Simple)
{ //first pass or simple
codecContext.YData = enTile.YEncodedData;
codecContext.CbData = enTile.CbEncodedData;
codecContext.CrData = enTile.CrEncodedData;
RemoteFXDecoder.RLGRDecode(codecContext);
ComputeOriginalLL3FromDeltas(codecContext);
}
else
{
SRLDecode(codecContext, enTile, tState);
}
//Progressive Dequantization
if (enTile.DataType != EncodedTileType.Simple)
{
ProgressiveDeQuantization(codecContext, enTile.ProgCodecQuant);
}
// Create a DwtTile instance for tri-state
DwtTile triStateDwt = new DwtTile(codecContext.YComponent, codecContext.CbComponent, codecContext.CrComponent,
enTile.CodecQuantVals, enTile.QuantIdxY, enTile.QuantIdxCb, enTile.QuantIdxCr, enTile.UseReduceExtrapolate, enTile.ProgCodecQuant);
//Set Tri-State for progressive codec
if (enTile.DataType == EncodedTileType.FirstPass)
{
//DwtTile tileTriStat = SetTriState(diffDwt, enTile.UseReduceExtrapolate);
tState.UpdateTriState(triStateDwt);
}
else if (enTile.DataType == EncodedTileType.UpgradePass)
{
DwtTile prvStat = tState.GetTriState();
prvStat.Add(triStateDwt);
// update ProCodecQuant
prvStat.ProgCodecQuant = triStateDwt.ProgCodecQuant;
tState.UpdateTriState(prvStat);
}
// Create another DwtTile instance for DWT Data.
// The data in diffDwt is the same as triStateDwt, this will makesure the DWT data and tri-state not share the same DWT tile instance
DwtTile diffDwt = new DwtTile(codecContext.YComponent, codecContext.CbComponent, codecContext.CrComponent,
enTile.CodecQuantVals, enTile.QuantIdxY, enTile.QuantIdxCb, enTile.QuantIdxCr, enTile.UseReduceExtrapolate, enTile.ProgCodecQuant);
//Sum difference
if (enTile.IsDifferenceTile || enTile.DataType == EncodedTileType.UpgradePass)
{
tState.AddDwt(diffDwt);
}
else
{
tState.UpdateDwt(diffDwt);
}
}
public static void SRLDecode(RfxProgressiveCodecContext codecContext, EncodedTile enTile, TileState tState)
{
SRLDecoder yDecoder = null;
SRLDecoder cbDecoder = null;
SRLDecoder crDecoder = null;
List <short> yData = new List <short>();
List <short> cbData = new List <short>();
List <short> crData = new List <short>();
DwtTile triState = tState.GetTriState();
RFX_PROGRESSIVE_CODEC_QUANT prvProgQuant = tState.GetDwt().ProgCodecQuant;
int nonLL3Len = RdpegfxTileUtils.ComponentElementCount - RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, enTile.UseReduceExtrapolate);
if (enTile.YEncodedData != null)
{
yDecoder = new SRLDecoder(enTile.YEncodedData);
}
if (enTile.CbEncodedData != null)
{
cbDecoder = new SRLDecoder(enTile.CbEncodedData);
}
if (enTile.CrEncodedData != null)
{
crDecoder = new SRLDecoder(enTile.CrEncodedData);
}
BitStream yRaw = BitStream.GetFromBytes(enTile.YRawData);
BitStream cbRaw = BitStream.GetFromBytes(enTile.CbRawData);
BitStream crRaw = BitStream.GetFromBytes(enTile.CrRawData);
for (int i = 0; i < RdpegfxTileUtils.ComponentElementCount; i++)
{
BandType_Values band = RdpegfxTileUtils.GetBandByIndex(i, enTile.UseReduceExtrapolate);
//Y
int curBitPos = RdpegfxTileUtils.GetBitPosFromQuant(enTile.ProgCodecQuant.yQuantValues, band);
int prvBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prvProgQuant.yQuantValues, band);
int bitCount = prvBitPos - curBitPos;
int sign = triState.Y_DwtQ[i];
if (bitCount > 0)
{
if (sign == 0 && i < nonLL3Len)
{
if (yDecoder != null)
{
short?decodedValue = yDecoder.DecodeOne(bitCount);
if (decodedValue.HasValue)
{
yData.Add(decodedValue.Value);
}
else
{
yData.Add(0);
}
}
else
{
yData.Add(0);
}
}
else
{
int output;
if (yRaw.ReadInt32(bitCount, out output))
{
if (sign < 0 && i < nonLL3Len)
{
output = -output;
}
yData.Add((short)output);
}
else
{
yData.Add(0);
}
}
}
else
{
yData.Add(0);
}
//Cb
curBitPos = RdpegfxTileUtils.GetBitPosFromQuant(enTile.ProgCodecQuant.cbQuantValues, band);
prvBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prvProgQuant.cbQuantValues, band);
bitCount = prvBitPos - curBitPos;
sign = triState.Cb_DwtQ[i];
if (bitCount > 0)
{
if (sign == 0 && i < nonLL3Len)
{
if (cbDecoder != null)
{
short?decodedValue = cbDecoder.DecodeOne(bitCount);
if (decodedValue.HasValue)
{
cbData.Add(decodedValue.Value);
}
else
{
cbData.Add(0);
}
}
else
{
cbData.Add(0);
}
}
else
{
int output;
if (cbRaw.ReadInt32(bitCount, out output))
{
if (sign < 0 && i < nonLL3Len)
{
output = -output;
}
cbData.Add((short)output);
}
else
{
cbData.Add(0);
}
}
}
else
{
cbData.Add(0);
}
//cr
curBitPos = RdpegfxTileUtils.GetBitPosFromQuant(enTile.ProgCodecQuant.crQuantValues, band);
prvBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prvProgQuant.crQuantValues, band);
bitCount = prvBitPos - curBitPos;
sign = triState.Cr_DwtQ[i];
if (bitCount > 0)
{
if (sign == 0 && i < nonLL3Len)
{
if (crDecoder != null)
{
short?decodedValue = crDecoder.DecodeOne(bitCount);
if (decodedValue.HasValue)
{
crData.Add(decodedValue.Value);
}
else
{
crData.Add(0);
}
}
else
{
crData.Add(0);
}
}
else
{
int output;
if (crRaw.ReadInt32(bitCount, out output))
{
if (sign < 0 && i < nonLL3Len)
{
output = -output;
}
crData.Add((short)output);
}
else
{
crData.Add(0);
}
}
}
else
{
crData.Add(0);
}
}
codecContext.YComponent = yData.ToArray();
codecContext.CbComponent = cbData.ToArray();
codecContext.CrComponent = crData.ToArray();
}
public static void ProgressiveDeQuantization(RfxProgressiveCodecContext codecContext, RFX_PROGRESSIVE_CODEC_QUANT progCodecQuant )
{
ProgressiveDeQuantization_Component(codecContext.YComponent, progCodecQuant.yQuantValues, codecContext.UseReduceExtrapolate);
ProgressiveDeQuantization_Component(codecContext.CbComponent, progCodecQuant.cbQuantValues, codecContext.UseReduceExtrapolate);
ProgressiveDeQuantization_Component(codecContext.CrComponent, progCodecQuant.crQuantValues, codecContext.UseReduceExtrapolate);
}
//SRLEncode
public static EncodedTile SRLEncode(RfxProgressiveCodecContext encodingContext, Rdpegfx.RFX_PROGRESSIVE_CODEC_QUANT progQuant)
{
SRLEncoder encoder = new SRLEncoder();
List <short> yDataToSrl = new List <short>();
List <short> cbDataToSrl = new List <short>();
List <short> crDataToSrl = new List <short>();
List <int> yDataToSrlBitLen = new List <int>();
List <int> cbDataToSrlBitLen = new List <int>();
List <int> crDataToSrlBitLen = new List <int>();
BitStream yRawBitStream = new BitStream();
BitStream cbRawBitStream = new BitStream();
BitStream crRawBitStream = new BitStream();
int nonLL3Len = RdpegfxTileUtils.ComponentElementCount - RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, encodingContext.UseReduceExtrapolate);
Rdpegfx.RFX_PROGRESSIVE_CODEC_QUANT prevProgQuant = encodingContext.prevProgQuant;
Rdpegfx.RFX_PROGRESSIVE_CODEC_QUANT curProgQuant = progQuant;
for (int i = 0; i < RdpegfxTileUtils.ComponentElementCount; i++)
{
BandType_Values band = RdpegfxTileUtils.GetBandByIndex(i, encodingContext.UseReduceExtrapolate);
int targetBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.yQuantValues, band);
int prevBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prevProgQuant.yQuantValues, band);
int bitCount = prevBitPos - targetBitPos;
if (bitCount > 0)
{
if (encodingContext.DAS.Y_DwtQ[i] == 0 && i < nonLL3Len)
{
yDataToSrl.Add(encodingContext.ProgQ.Y_DwtQ[i]);
yDataToSrlBitLen.Add(bitCount);
}
else
{
//Add raw data
yRawBitStream.WriteBits(bitCount, Math.Abs(encodingContext.ProgQ.Y_DwtQ[i]));
}
}
targetBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.cbQuantValues, band);
prevBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prevProgQuant.cbQuantValues, band);
bitCount = prevBitPos - targetBitPos;
if (bitCount > 0)
{
if (encodingContext.DAS.Cb_DwtQ[i] == 0 && i < nonLL3Len)
{
cbDataToSrl.Add(encodingContext.ProgQ.Cb_DwtQ[i]);
cbDataToSrlBitLen.Add(bitCount);
}
else
{
//Add raw data
cbRawBitStream.WriteBits(bitCount, Math.Abs(encodingContext.ProgQ.Cb_DwtQ[i]));
}
}
targetBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.crQuantValues, band);
prevBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.crQuantValues, band);
bitCount = prevBitPos - targetBitPos;
if (bitCount > 0)
{
if (encodingContext.DAS.Cr_DwtQ[i] == 0 && i < nonLL3Len)
{
crDataToSrl.Add(encodingContext.ProgQ.Cr_DwtQ[i]);
crDataToSrlBitLen.Add(bitCount);
}
else
{
//Add raw data
crRawBitStream.WriteBits(bitCount, Math.Abs(encodingContext.ProgQ.Cr_DwtQ[i]));
}
}
}
encodingContext.YData = encoder.Encode(yDataToSrl.ToArray(), yDataToSrlBitLen.ToArray());
encodingContext.CbData = encoder.Encode(cbDataToSrl.ToArray(), cbDataToSrlBitLen.ToArray());
encodingContext.CrData = encoder.Encode(crDataToSrl.ToArray(), crDataToSrlBitLen.ToArray());
EncodedTile ugTile = new EncodedTile();
ugTile.YEncodedData = (byte[])encodingContext.YData.Clone();
ugTile.CbEncodedData = (byte[])encodingContext.CbData.Clone();
ugTile.CrEncodedData = (byte[])encodingContext.CrData.Clone();
ugTile.YRawData = yRawBitStream.ToBytes();
ugTile.CbRawData = cbRawBitStream.ToBytes();
ugTile.CrRawData = crRawBitStream.ToBytes();
ugTile.DataType = EncodedTileType.UpgradePass;
ugTile.IsDifferenceTile = encodingContext.UseDifferenceTile;
ugTile.UseReduceExtrapolate = encodingContext.UseReduceExtrapolate;
ugTile.CodecQuantVals = encodingContext.CodecQuantVals;
ugTile.QuantIdxY = encodingContext.QuantIdxY;
ugTile.QuantIdxCb = encodingContext.QuantIdxCb;
ugTile.QuantIdxCr = encodingContext.QuantIdxCr;
ugTile.ProgCodecQuant = curProgQuant;
return(ugTile);
}
public static void SRLDecode(RfxProgressiveCodecContext codecContext, EncodedTile enTile, TileState tState)
{
SRLDecoder yDecoder = null;
SRLDecoder cbDecoder = null;
SRLDecoder crDecoder = null;
List<short> yData = new List<short>();
List<short> cbData = new List<short>();
List<short> crData = new List<short>();
DwtTile triState = tState.GetTriState();
RFX_PROGRESSIVE_CODEC_QUANT prvProgQuant = tState.GetDwt().ProgCodecQuant;
int nonLL3Len = RdpegfxTileUtils.ComponentElementCount - RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, enTile.UseReduceExtrapolate);
if (enTile.YEncodedData != null)
{
yDecoder = new SRLDecoder(enTile.YEncodedData);
}
if (enTile.CbEncodedData != null)
{
cbDecoder = new SRLDecoder(enTile.CbEncodedData);
}
if (enTile.CrEncodedData != null)
{
crDecoder = new SRLDecoder(enTile.CrEncodedData);
}
BitStream yRaw = BitStream.GetFromBytes(enTile.YRawData);
BitStream cbRaw = BitStream.GetFromBytes(enTile.CbRawData);
BitStream crRaw = BitStream.GetFromBytes(enTile.CrRawData);
for (int i = 0; i < RdpegfxTileUtils.ComponentElementCount; i++)
{
BandType_Values band = RdpegfxTileUtils.GetBandByIndex(i, enTile.UseReduceExtrapolate);
//Y
int curBitPos = RdpegfxTileUtils.GetBitPosFromQuant(enTile.ProgCodecQuant.yQuantValues, band);
int prvBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prvProgQuant.yQuantValues, band);
int bitCount = prvBitPos - curBitPos;
int sign = triState.Y_DwtQ[i];
if (bitCount > 0)
{
if (sign == 0 && i < nonLL3Len)
{
if (yDecoder != null)
{
short? decodedValue = yDecoder.DecodeOne(bitCount);
if (decodedValue.HasValue)
{
yData.Add(decodedValue.Value);
}
else
{
yData.Add(0);
}
}
else
{
yData.Add(0);
}
}
else
{
int output;
if (yRaw.ReadInt32(bitCount, out output))
{
if (sign < 0 && i < nonLL3Len) output = -output;
yData.Add((short)output);
}
else
{
yData.Add(0);
}
}
}
else
{
yData.Add(0);
}
//Cb
curBitPos = RdpegfxTileUtils.GetBitPosFromQuant(enTile.ProgCodecQuant.cbQuantValues, band);
prvBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prvProgQuant.cbQuantValues, band);
bitCount = prvBitPos - curBitPos;
sign = triState.Cb_DwtQ[i];
if (bitCount > 0)
{
if (sign == 0 && i < nonLL3Len)
{
if (cbDecoder != null)
{
short? decodedValue = cbDecoder.DecodeOne(bitCount);
if (decodedValue.HasValue)
{
cbData.Add(decodedValue.Value);
}
else
{
cbData.Add(0);
}
}
else
{
cbData.Add(0);
}
}
else
{
int output;
if (cbRaw.ReadInt32(bitCount, out output))
{
if (sign < 0 && i < nonLL3Len) output = -output;
cbData.Add((short)output);
}
else
{
cbData.Add(0);
}
}
}
else
{
cbData.Add(0);
}
//cr
curBitPos = RdpegfxTileUtils.GetBitPosFromQuant(enTile.ProgCodecQuant.crQuantValues, band);
prvBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prvProgQuant.crQuantValues, band);
bitCount = prvBitPos - curBitPos;
sign = triState.Cr_DwtQ[i];
if (bitCount > 0)
{
if (sign == 0 && i < nonLL3Len)
{
if (crDecoder != null)
{
short? decodedValue = crDecoder.DecodeOne(bitCount);
if (decodedValue.HasValue)
{
crData.Add(decodedValue.Value);
}
else
{
crData.Add(0);
}
}
else
{
crData.Add(0);
}
}
else
{
int output;
if (crRaw.ReadInt32(bitCount, out output))
{
if (sign < 0 && i < nonLL3Len) output = -output;
crData.Add((short)output);
}
else
{
crData.Add(0);
}
}
}
else
{
crData.Add(0);
}
}
codecContext.YComponent = yData.ToArray();
codecContext.CbComponent = cbData.ToArray();
codecContext.CrComponent = crData.ToArray();
}
//DWT
internal static void DWT(RfxProgressiveCodecContext encodingContext)
{
DWT_Component(encodingContext.YSet);
DWT_Component(encodingContext.CbSet);
DWT_Component(encodingContext.CrSet);
}
/// <summary>
/// Decode and Render the tile to an image
/// </summary>
/// <returns>The image rendered from tile</returns>
public Bitmap ToImage()
{
Bitmap tileImg = new Bitmap(RdpegfxTileUtils.TileSize, RdpegfxTileUtils.TileSize);
RfxProgressiveCodecContext codecContext = new RfxProgressiveCodecContext(this.CodecQuantVals, this.QuantIdxY, this.QuantIdxCb, this.QuantIdxCr, UseReduceExtrapolate);
codecContext.YComponent = new short[Y_DwtQ.Length];
codecContext.CbComponent = new short[Cb_DwtQ.Length];
codecContext.CrComponent = new short[Cr_DwtQ.Length];
Y_DwtQ.CopyTo(codecContext.YComponent, 0);
Cb_DwtQ.CopyTo(codecContext.CbComponent, 0);
Cr_DwtQ.CopyTo(codecContext.CrComponent, 0);
RfxProgressiveDecoder.DecodeTileFromDwtQ(codecContext);
BitmapData bmpData = tileImg.LockBits(new Rectangle(0, 0, tileImg.Width, tileImg.Height), ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
unsafe
{
byte* cusor = (byte*)bmpData.Scan0.ToPointer();
for (int y = 0; y < bmpData.Height; y++)
{
for (int x = 0; x < bmpData.Width; x++)
{
cusor[0] = codecContext.BSet[x, y];
cusor[1] = codecContext.GSet[x, y];
cusor[2] = codecContext.RSet[x, y];
cusor += 3;
}
cusor += (bmpData.Stride - 3 * (bmpData.Width));
}
}
tileImg.UnlockBits(bmpData);
return tileImg;
}
/// <summary>
/// Encode the surface with Progressive Codec
/// </summary>
/// <param name="quality">The target encoded quality.</param>
/// <param name="bProg">Indicates if encode progressively</param>
/// <param name="bSubDiff">Indicates if sub-diffing with last frame of this surface</param>
/// <param name="bReduceExtrapolate">Indicates if use Reduce Extrapolate method in DWT step.</param>
/// <returns>The dictionary of tile index and encoded tile datas.</returns>
public Dictionary<TileIndex, EncodedTile[]> ProgressiveEncode(ImageQuality_Values quality, bool bProg, bool bSubDiff, bool bReduceExtrapolate, bool ignoreUnchangedTile=true)
{
Dictionary<TileIndex, EncodedTile[]> encodedTileDic = new Dictionary<TileIndex, EncodedTile[]>();
TS_RFX_CODEC_QUANT quant = RdpegfxTileUtils.GetCodecQuant(quality);
TileIndex[] tileIndexArr;
if(!ignoreUnchangedTile)
{
tileIndexArr = GetAllIndexes();
}
else
{
tileIndexArr = GetDiffIndexes(true);
}
foreach (TileIndex index in tileIndexArr)
{
RfxProgressiveCodecContext codecContext = new RfxProgressiveCodecContext(
new TS_RFX_CODEC_QUANT[]{quant},
0, // quantization index of Y, set this paramter to 0 since only one quantization value in the array
0, // quantization index of Cb
0, // quantization index of Cr
bProg,//progressive
bSubDiff,//sub-diffing
bReduceExtrapolate);//reduce extrapolate
TileState tState = new TileState(this, index);
encodedTileDic.Add(index,RfxProgressiveEncoder.EncodeTile(codecContext, tState));
}
return encodedTileDic;
}
//InverseDWT
public static void InverseDWT(RfxProgressiveCodecContext codecContext)
{
InverseDWT_Component(codecContext.YSet);
InverseDWT_Component(codecContext.CbSet);
InverseDWT_Component(codecContext.CrSet);
}
public static void ProgressiveQuantization(RfxProgressiveCodecContext encodingContext, ProgressiveChunk_Values chunk)
{
DwtBands yBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Y_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands cbBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cb_DwtQ, encodingContext.UseReduceExtrapolate);
DwtBands crBD = DwtBands.GetFromLinearizationResult(encodingContext.DRS.Cr_DwtQ, encodingContext.UseReduceExtrapolate);
ProgressiveQuantization_Component(yBD, TileComponents.Y, chunk);
ProgressiveQuantization_Component(cbBD, TileComponents.Cb, chunk);
ProgressiveQuantization_Component(crBD, TileComponents.Cr, chunk);
DwtTile dwtDts = new DwtTile(yBD.GetLinearizationData(), cbBD.GetLinearizationData(), crBD.GetLinearizationData());
encodingContext.ProgQ = dwtDts;
//Compute DTS
encodingContext.DTS = GetDTS(encodingContext, chunk);
}
public static void Dequantization(RfxProgressiveCodecContext codecContext)
{
dequantization_Component(codecContext.YSet, codecContext.CodecQuantVals[codecContext.QuantIdxY], codecContext.UseReduceExtrapolate);
dequantization_Component(codecContext.CbSet, codecContext.CodecQuantVals[codecContext.QuantIdxCb], codecContext.UseReduceExtrapolate);
dequantization_Component(codecContext.CrSet, codecContext.CodecQuantVals[codecContext.QuantIdxCr], codecContext.UseReduceExtrapolate);
}
//SRLEncode
public static EncodedTile SRLEncode(RfxProgressiveCodecContext encodingContext, Rdpegfx.RFX_PROGRESSIVE_CODEC_QUANT progQuant)
{
SRLEncoder encoder = new SRLEncoder();
List<short> yDataToSrl = new List<short>();
List<short> cbDataToSrl = new List<short>();
List<short> crDataToSrl = new List<short>();
List<int> yDataToSrlBitLen = new List<int>();
List<int> cbDataToSrlBitLen = new List<int>();
List<int> crDataToSrlBitLen = new List<int>();
BitStream yRawBitStream = new BitStream();
BitStream cbRawBitStream = new BitStream();
BitStream crRawBitStream = new BitStream();
int nonLL3Len = RdpegfxTileUtils.ComponentElementCount - RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, encodingContext.UseReduceExtrapolate);
Rdpegfx.RFX_PROGRESSIVE_CODEC_QUANT prevProgQuant = encodingContext.prevProgQuant;
Rdpegfx.RFX_PROGRESSIVE_CODEC_QUANT curProgQuant = progQuant;
for (int i = 0; i < RdpegfxTileUtils.ComponentElementCount; i++)
{
BandType_Values band = RdpegfxTileUtils.GetBandByIndex(i, encodingContext.UseReduceExtrapolate);
int targetBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.yQuantValues, band);
int prevBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prevProgQuant.yQuantValues, band);
int bitCount = prevBitPos - targetBitPos;
if (bitCount > 0)
{
if (encodingContext.DAS.Y_DwtQ[i] == 0 && i < nonLL3Len)
{
yDataToSrl.Add(encodingContext.ProgQ.Y_DwtQ[i]);
yDataToSrlBitLen.Add(bitCount);
}
else
{
//Add raw data
yRawBitStream.WriteBits(bitCount, Math.Abs(encodingContext.ProgQ.Y_DwtQ[i]));
}
}
targetBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.cbQuantValues, band);
prevBitPos = RdpegfxTileUtils.GetBitPosFromQuant(prevProgQuant.cbQuantValues, band);
bitCount = prevBitPos - targetBitPos;
if (bitCount > 0)
{
if (encodingContext.DAS.Cb_DwtQ[i] == 0 && i < nonLL3Len)
{
cbDataToSrl.Add(encodingContext.ProgQ.Cb_DwtQ[i]);
cbDataToSrlBitLen.Add(bitCount);
}
else
{
//Add raw data
cbRawBitStream.WriteBits(bitCount, Math.Abs(encodingContext.ProgQ.Cb_DwtQ[i]));
}
}
targetBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.crQuantValues, band);
prevBitPos = RdpegfxTileUtils.GetBitPosFromQuant(curProgQuant.crQuantValues, band);
bitCount = prevBitPos - targetBitPos;
if (bitCount > 0)
{
if (encodingContext.DAS.Cr_DwtQ[i] == 0 && i < nonLL3Len)
{
crDataToSrl.Add(encodingContext.ProgQ.Cr_DwtQ[i]);
crDataToSrlBitLen.Add(bitCount);
}
else
{
//Add raw data
crRawBitStream.WriteBits(bitCount, Math.Abs(encodingContext.ProgQ.Cr_DwtQ[i]));
}
}
}
encodingContext.YData = encoder.Encode(yDataToSrl.ToArray(), yDataToSrlBitLen.ToArray());
encodingContext.CbData = encoder.Encode(cbDataToSrl.ToArray(), cbDataToSrlBitLen.ToArray());
encodingContext.CrData = encoder.Encode(crDataToSrl.ToArray(), crDataToSrlBitLen.ToArray());
EncodedTile ugTile = new EncodedTile();
ugTile.YEncodedData = (byte[])encodingContext.YData.Clone();
ugTile.CbEncodedData = (byte[])encodingContext.CbData.Clone();
ugTile.CrEncodedData = (byte[])encodingContext.CrData.Clone();
ugTile.YRawData = yRawBitStream.ToBytes();
ugTile.CbRawData = cbRawBitStream.ToBytes();
ugTile.CrRawData = crRawBitStream.ToBytes();
ugTile.DataType = EncodedTileType.UpgradePass;
ugTile.IsDifferenceTile = encodingContext.UseDifferenceTile;
ugTile.UseReduceExtrapolate = encodingContext.UseReduceExtrapolate;
ugTile.CodecQuantVals = encodingContext.CodecQuantVals;
ugTile.QuantIdxY = encodingContext.QuantIdxY;
ugTile.QuantIdxCb = encodingContext.QuantIdxCb;
ugTile.QuantIdxCr = encodingContext.QuantIdxCr;
ugTile.ProgCodecQuant = curProgQuant;
return ugTile;
}
public static void ProgressiveDeQuantization(RfxProgressiveCodecContext codecContext, RFX_PROGRESSIVE_CODEC_QUANT progCodecQuant)
{
ProgressiveDeQuantization_Component(codecContext.YComponent, progCodecQuant.yQuantValues, codecContext.UseReduceExtrapolate);
ProgressiveDeQuantization_Component(codecContext.CbComponent, progCodecQuant.cbQuantValues, codecContext.UseReduceExtrapolate);
ProgressiveDeQuantization_Component(codecContext.CrComponent, progCodecQuant.crQuantValues, codecContext.UseReduceExtrapolate);
}
//Compute the difference tile dwt
public static void SubBandDiffing_DT(RfxProgressiveCodecContext encodingContext, TileState enTileInfo)
{
if (encodingContext.UseDifferenceTile)
{
DwtTile oldDwt = enTileInfo.GetOldDwt();
if (oldDwt != null)
{
short[] yDiffDwt, cbDiffDwt, crDiffDwt;
int lenOfNonLL3Band = (RdpegfxTileUtils.ComponentElementCount - RdpegfxTileUtils.GetBandSize(BandType_Values.LL3, encodingContext.UseReduceExtrapolate));// ? 81 : 64;
int yNewZeroCount, cbNewZeroCount, crNewZeroCount;
int yDiffZeroCount, cbDiffZeroCount, crDiffZeroCount;
yDiffDwt = RdpegfxTileUtils.SubDiffingDwt(encodingContext.YComponent, oldDwt.Y_DwtQ, lenOfNonLL3Band, out yNewZeroCount, out yDiffZeroCount);
cbDiffDwt = RdpegfxTileUtils.SubDiffingDwt(encodingContext.CbComponent, oldDwt.Cb_DwtQ, lenOfNonLL3Band, out cbNewZeroCount, out cbDiffZeroCount);
crDiffDwt = RdpegfxTileUtils.SubDiffingDwt(encodingContext.CrComponent, oldDwt.Cr_DwtQ, lenOfNonLL3Band, out crNewZeroCount, out crDiffZeroCount);
if ((yDiffDwt != null && cbDiffDwt != null && crDiffDwt != null) &&
(yNewZeroCount + cbNewZeroCount + crNewZeroCount < yDiffZeroCount + cbDiffZeroCount + crDiffZeroCount))
{//use difference tile
encodingContext.YComponent = yDiffDwt;
encodingContext.CbComponent = cbDiffDwt;
encodingContext.CrComponent = crDiffDwt;
return;
}
}
}
encodingContext.UseDifferenceTile = false;//use orginal tile
}
static void FillRgbData(RfxProgressiveCodecContext encodingContext, RgbTile rgbTile)
{
encodingContext.RSet = rgbTile.RSet;
encodingContext.GSet = rgbTile.GSet;
encodingContext.BSet = rgbTile.BSet;
}
static void FillRgbData(RfxProgressiveCodecContext encodingContext, RgbTile rgbTile)
{
encodingContext.RSet = rgbTile.RSet;
encodingContext.GSet = rgbTile.GSet;
encodingContext.BSet = rgbTile.BSet;
}
//DWT
internal static void DWT(RfxProgressiveCodecContext encodingContext)
{
DWT_Component(encodingContext.YSet);
DWT_Component(encodingContext.CbSet);
DWT_Component(encodingContext.CrSet);
}
/// <summary>
/// Encode a Tile
/// </summary>
/// <param name="encodingContext">The tile encoding context</param>
/// <param name="enTileInfo">The tile to be encoded</param>
/// <returns>A array of CompressedTile which contains the encoded tiles</returns>
public static EncodedTile[] EncodeTile(RfxProgressiveCodecContext encodingContext, TileState enTileInfo)
{
EncodedTileType targetType = encodingContext.UseProgressive ? EncodedTileType.FirstPass : EncodedTileType.Simple;
//File RGB
FillRgbData(encodingContext, enTileInfo.GetRgb());
//Do color conversion
RemoteFXEncoder.RGBToYCbCr(encodingContext);
//Do DWT
if (encodingContext.UseReduceExtrapolate)
{
//Do DWT using UseReduce Extrapolate method
DWT(encodingContext);
}
else
{
RemoteFXEncoder.DWT(encodingContext);
}
//Do quantiztion
Quantization(encodingContext);
//Do linearization (LL3 delta not computed)
Linearization_NoLL3Delta(encodingContext);
//Update new DWT to tile
DwtTile dwt = new DwtTile(
(short[])encodingContext.YComponent.Clone(),
(short[])encodingContext.CbComponent.Clone(),
(short[])encodingContext.CrComponent.Clone(),
encodingContext.CodecQuantVals,
encodingContext.QuantIdxY,
encodingContext.QuantIdxCb,
encodingContext.QuantIdxCr,
encodingContext.UseReduceExtrapolate
);
enTileInfo.UpdateDwt(dwt);
//Sub-Band Diffing
if (encodingContext.UseDifferenceTile)
{
SubBandDiffing_DT(encodingContext, enTileInfo);
}
if (targetType == EncodedTileType.Simple)
{
ComputeLL3Deltas(encodingContext);
RemoteFXEncoder.RLGREncode(encodingContext);
EncodedTile cpTile = new EncodedTile();
cpTile.YEncodedData = (byte[])encodingContext.YData.Clone();
cpTile.CbEncodedData = (byte[])encodingContext.CbData.Clone();
cpTile.CrEncodedData = (byte[])encodingContext.CrData.Clone();
cpTile.DataType = EncodedTileType.Simple;
cpTile.IsDifferenceTile = encodingContext.UseDifferenceTile;
cpTile.UseReduceExtrapolate = encodingContext.UseReduceExtrapolate;
cpTile.CodecQuantVals = encodingContext.CodecQuantVals;
cpTile.QuantIdxY = encodingContext.QuantIdxY;
cpTile.QuantIdxCb = encodingContext.QuantIdxCb;
cpTile.QuantIdxCr = encodingContext.QuantIdxCr;
cpTile.ProgCodecQuant = null;
return new EncodedTile[] { cpTile };
}
else
{
List<EncodedTile> progCTileList = new List<EncodedTile>();
//Init DRS, DAS
encodingContext.DRS = new DwtTile(encodingContext.YComponent, encodingContext.CbComponent, encodingContext.CrComponent);
encodingContext.DAS = new DwtTile(new short[RdpegfxTileUtils.ComponentElementCount], new short[RdpegfxTileUtils.ComponentElementCount], new short[RdpegfxTileUtils.ComponentElementCount]);
#region Chunk 25, first pass
ProgressiveQuantization(encodingContext, ProgressiveChunk_Values.kChunk_25);
//Compute ProgQ LL3 deltas
encodingContext.YComponent = encodingContext.ProgQ.Y_DwtQ;
encodingContext.CbComponent = encodingContext.ProgQ.Cb_DwtQ;
encodingContext.CrComponent = encodingContext.ProgQ.Cr_DwtQ;
ComputeLL3Deltas(encodingContext);
RemoteFXEncoder.RLGREncode(encodingContext);
EncodedTile firstPassTile = new EncodedTile();
firstPassTile.YEncodedData = (byte[])encodingContext.YData.Clone();
firstPassTile.CbEncodedData = (byte[])encodingContext.CbData.Clone();
firstPassTile.CrEncodedData = (byte[])encodingContext.CrData.Clone();
firstPassTile.DataType = EncodedTileType.FirstPass;
firstPassTile.IsDifferenceTile = encodingContext.UseDifferenceTile;
firstPassTile.UseReduceExtrapolate = encodingContext.UseReduceExtrapolate;
firstPassTile.CodecQuantVals = encodingContext.CodecQuantVals;
firstPassTile.QuantIdxY = encodingContext.QuantIdxY;
firstPassTile.QuantIdxCb = encodingContext.QuantIdxCb;
firstPassTile.QuantIdxCr = encodingContext.QuantIdxCr;
firstPassTile.ProgCodecQuant = RdpegfxTileUtils.GetProgCodecQuant(ProgressiveChunk_Values.kChunk_25);
progCTileList.Add(firstPassTile);
encodingContext.prevProgQuant = RdpegfxTileUtils.GetProgCodecQuant(ProgressiveChunk_Values.kChunk_25);
//Update DRS
encodingContext.DRS.Sub(encodingContext.DTS);
//Update DAS
encodingContext.DAS.Add(encodingContext.DTS);
#endregion
#region Chunk 50,75,100, upgrade pass
ProgressiveChunk_Values[] upgradeChunks = { ProgressiveChunk_Values.kChunk_50, ProgressiveChunk_Values.kChunk_75, ProgressiveChunk_Values.kChunk_100 };
foreach (ProgressiveChunk_Values tChunk in upgradeChunks)
{
ProgressiveQuantization(encodingContext, tChunk);
RFX_PROGRESSIVE_CODEC_QUANT progquant = RdpegfxTileUtils.GetProgCodecQuant(tChunk);
progCTileList.Add(SRLEncode(encodingContext, progquant));
//Update DRS
encodingContext.DRS.Sub(encodingContext.DTS);
//Update DAS
encodingContext.DAS.Add(encodingContext.DTS);
encodingContext.prevProgQuant = progquant;
}
return progCTileList.ToArray();
#endregion
}
}
/// <summary>
/// Decode a tile from DWT
/// </summary>
/// <param name="codecContext">The codec context which contains the DWT data of a tile.</param>
public static void DecodeTileFromDwtQ(RfxProgressiveCodecContext codecContext)
{
//Sub Band Reconstruction
SubBandReconstruction(codecContext);
//De-quantization
Dequantization(codecContext);
//Inverse DWT
if (codecContext.UseReduceExtrapolate)
{
InverseDWT(codecContext);
}
else
{
RemoteFXDecoder.InverseDWT(codecContext);
}
//(Y, U, V) to (R, G, B)
RemoteFXDecoder.YCbCrToRGB(codecContext);
}
