/// <summary> Creates a PostCompRateAllocator object for the appropriate rate
/// allocation parameters in the parameter list 'pl', having 'src' as the
/// source of entropy coded data, 'rate' as the target bitrate and 'bw' as
/// the bit stream writer object.
///
/// </summary>
/// <param name="src">The source of entropy coded data.
///
/// </param>
/// <param name="pl">The parameter lis (or options).
///
/// </param>
/// <param name="rate">The target bitrate for the rate allocation
///
/// </param>
/// <param name="bw">The bit stream writer object, where the bit stream data will
/// be written.
///
/// </param>
public static PostCompRateAllocator createInstance(CodedCBlkDataSrcEnc src, ParameterList pl, float rate, CodestreamWriter bw, EncoderSpecs encSpec)
{
// Check parameters
pl.checkList(OPT_PREFIX, CSJ2K.j2k.util.ParameterList.toNameArray(pinfo));
// Construct the layer specification from the 'Alayers' option
LayersInfo lyrs = parseAlayers(pl.getParameter("Alayers"), rate);
int nTiles = encSpec.nTiles;
int nComp = encSpec.nComp;
int numLayers = lyrs.TotNumLayers;
// Parse the progressive type
encSpec.pocs = new ProgressionSpec(nTiles, nComp, numLayers, encSpec.dls, ModuleSpec.SPEC_TYPE_TILE_COMP, pl);
return new EBCOTRateAllocator(src, lyrs, bw, encSpec, pl);
}
/// <summary> Initializes the EBCOT rate allocator of entropy coded data. The layout
/// of layers, and their bitrate constraints, is specified by the 'lyrs'
/// parameter.
///
/// </summary>
/// <param name="src">The source of entropy coded data.
///
/// </param>
/// <param name="lyrs">The layers layout specification.
///
/// </param>
/// <param name="writer">The bit stream writer.
///
/// </param>
/// <seealso cref="ProgressionType">
///
/// </seealso>
public EBCOTRateAllocator(CodedCBlkDataSrcEnc src, LayersInfo lyrs, CodestreamWriter writer, EncoderSpecs encSpec, ParameterList pl)
: base(src, lyrs.TotNumLayers, writer, encSpec)
{
int minsbi, maxsbi;
int i;
SubbandAn sb, sb2;
Coord ncblks = null;
// If we do timing create necessary structures
#if DO_TIMING
// If we are timing make sure that 'finalize' gets called.
//UPGRADE_ISSUE: Method 'java.lang.System.runFinalizersOnExit' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangSystem'"
// CONVERSION PROBLEM?
//System_Renamed.runFinalizersOnExit(true);
// The System.runFinalizersOnExit() method is deprecated in Java
// 1.2 since it can cause a deadlock in some cases. However, here
// we use it only for profiling purposes and is disabled in
// production code.
initTime = 0L;
buildTime = 0L;
writeTime = 0L;
#endif
// Save the layer specs
lyrSpec = lyrs;
//Initialize the size of the RD slope rates array
RDSlopesRates = new int[RD_SUMMARY_SIZE];
//Get number of tiles, components
int nt = src.getNumTiles();
int nc = NumComps;
//Allocate the coded code-blocks and truncation points indexes arrays
cblks = new CBlkRateDistStats[nt][][][][];
for (int i2 = 0; i2 < nt; i2++)
{
cblks[i2] = new CBlkRateDistStats[nc][][][];
}
truncIdxs = new int[nt][][][][][];
for (int i3 = 0; i3 < nt; i3++)
{
truncIdxs[i3] = new int[num_Layers][][][][];
for (int i4 = 0; i4 < num_Layers; i4++)
{
truncIdxs[i3][i4] = new int[nc][][][];
}
}
int cblkPerSubband; // Number of code-blocks per subband
int mrl; // Number of resolution levels
int l; // layer index
int s; //subband index
// Used to compute the maximum number of precincts for each resolution
// level
int tx0, ty0, tx1, ty1; // Current tile position in the reference grid
int tcx0, tcy0, tcx1, tcy1; // Current tile position in the domain of
// the image component
int trx0, try0, trx1, try1; // Current tile position in the reduced
// resolution image domain
int xrsiz, yrsiz; // Component sub-sampling factors
Coord tileI = null;
Coord nTiles = null;
int xsiz, ysiz, x0siz, y0siz;
int xt0siz, yt0siz;
int xtsiz, ytsiz;
int cb0x = src.CbULX;
int cb0y = src.CbULY;
src.setTile(0, 0);
for (int t = 0; t < nt; t++)
{
// Loop on tiles
nTiles = src.getNumTiles(nTiles);
tileI = src.getTile(tileI);
x0siz = ImgULX;
y0siz = ImgULY;
xsiz = x0siz + ImgWidth;
ysiz = y0siz + ImgHeight;
xt0siz = src.TilePartULX;
yt0siz = src.TilePartULY;
xtsiz = src.NomTileWidth;
ytsiz = src.NomTileHeight;
// Tile's coordinates on the reference grid
tx0 = (tileI.x == 0)?x0siz:xt0siz + tileI.x * xtsiz;
ty0 = (tileI.y == 0)?y0siz:yt0siz + tileI.y * ytsiz;
tx1 = (tileI.x != nTiles.x - 1)?xt0siz + (tileI.x + 1) * xtsiz:xsiz;
ty1 = (tileI.y != nTiles.y - 1)?yt0siz + (tileI.y + 1) * ytsiz:ysiz;
for (int c = 0; c < nc; c++)
{
// loop on components
//Get the number of resolution levels
sb = src.getAnSubbandTree(t, c);
mrl = sb.resLvl + 1;
// Initialize maximum number of precincts per resolution array
if (numPrec == null)
{
Coord[][][] tmpArray = new Coord[nt][][];
for (int i5 = 0; i5 < nt; i5++)
{
tmpArray[i5] = new Coord[nc][];
}
numPrec = tmpArray;
}
if (numPrec[t][c] == null)
{
numPrec[t][c] = new Coord[mrl];
}
// Subsampling factors
xrsiz = src.getCompSubsX(c);
yrsiz = src.getCompSubsY(c);
// Tile's coordinates in the image component domain
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
tcx0 = (int) System.Math.Ceiling(tx0 / (double) (xrsiz));
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
tcy0 = (int) System.Math.Ceiling(ty0 / (double) (yrsiz));
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
tcx1 = (int) System.Math.Ceiling(tx1 / (double) (xrsiz));
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
tcy1 = (int) System.Math.Ceiling(ty1 / (double) (yrsiz));
cblks[t][c] = new CBlkRateDistStats[mrl][][];
for (l = 0; l < num_Layers; l++)
{
truncIdxs[t][l][c] = new int[mrl][][];
}
for (int r = 0; r < mrl; r++)
{
// loop on resolution levels
// Tile's coordinates in the reduced resolution image
// domain
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
trx0 = (int) System.Math.Ceiling(tcx0 / (double) (1 << (mrl - 1 - r)));
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
try0 = (int) System.Math.Ceiling(tcy0 / (double) (1 << (mrl - 1 - r)));
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
trx1 = (int) System.Math.Ceiling(tcx1 / (double) (1 << (mrl - 1 - r)));
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
try1 = (int) System.Math.Ceiling(tcy1 / (double) (1 << (mrl - 1 - r)));
// Calculate the maximum number of precincts for each
// resolution level taking into account tile specific
// options.
double twoppx = (double) encSpec.pss.getPPX(t, c, r);
double twoppy = (double) encSpec.pss.getPPY(t, c, r);
numPrec[t][c][r] = new Coord();
if (trx1 > trx0)
{
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
numPrec[t][c][r].x = (int) System.Math.Ceiling((trx1 - cb0x) / twoppx) - (int) System.Math.Floor((trx0 - cb0x) / twoppx);
}
else
{
numPrec[t][c][r].x = 0;
}
if (try1 > try0)
{
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
numPrec[t][c][r].y = (int) System.Math.Ceiling((try1 - cb0y) / twoppy) - (int) System.Math.Floor((try0 - cb0y) / (double) twoppy);
}
else
{
numPrec[t][c][r].y = 0;
}
minsbi = (r == 0)?0:1;
maxsbi = (r == 0)?1:4;
cblks[t][c][r] = new CBlkRateDistStats[maxsbi][];
for (l = 0; l < num_Layers; l++)
{
truncIdxs[t][l][c][r] = new int[maxsbi][];
}
for (s = minsbi; s < maxsbi; s++)
{
// loop on subbands
//Get the number of blocks in the current subband
sb2 = (SubbandAn) sb.getSubbandByIdx(r, s);
ncblks = sb2.numCb;
cblkPerSubband = ncblks.x * ncblks.y;
cblks[t][c][r][s] = new CBlkRateDistStats[cblkPerSubband];
for (l = 0; l < num_Layers; l++)
{
truncIdxs[t][l][c][r][s] = new int[cblkPerSubband];
for (i = 0; i < cblkPerSubband; i++)
{
truncIdxs[t][l][c][r][s][i] = - 1;
}
}
} // End loop on subbands
} // End lopp on resolution levels
} // End loop on components
if (t != nt - 1)
{
src.nextTile();
}
} // End loop on tiles
//Initialize the packet encoder
pktEnc = new PktEncoder(src, encSpec, numPrec, pl);
// The layers array has to be initialized after the constructor since
// it is needed that the bit stream header has been entirely written
}
/// <summary> Initializes the source of entropy coded data.
///
/// </summary>
/// <param name="src">The source of entropy coded data.
///
/// </param>
/// <param name="ln">The number of layers to create
///
/// </param>
/// <param name="pt">The progressive type, as defined in 'ProgressionType'.
///
/// </param>
/// <param name="bw">The packet bit stream writer.
///
/// </param>
/// <seealso cref="ProgressionType">
///
/// </seealso>
public PostCompRateAllocator(CodedCBlkDataSrcEnc src, int nl, CodestreamWriter bw, EncoderSpecs encSpec):base(src)
{
this.src = src;
this.encSpec = encSpec;
num_Layers = nl;
bsWriter = bw;
}
