public virtual void encodeMainHeader()
{
int i;
// +---------------------------------+
// | SOC marker segment |
// +---------------------------------+
writeSOC();
// +---------------------------------+
// | Image and tile SIZe (SIZ) |
// +---------------------------------+
writeSIZ();
// +-------------------------------+
// | COding style Default (COD) |
// +-------------------------------+
bool isEresUsed = ((System.String) encSpec.tts.getDefault()).Equals("predict");
writeCOD(true, 0);
// +---------------------------------+
// | COding style Component (COC) |
// +---------------------------------+
for (i = 0; i < nComp; i++)
{
bool isEresUsedinComp = ((System.String) encSpec.tts.getCompDef(i)).Equals("predict");
if (encSpec.wfs.isCompSpecified(i) || encSpec.dls.isCompSpecified(i) || encSpec.bms.isCompSpecified(i) || encSpec.mqrs.isCompSpecified(i) || encSpec.rts.isCompSpecified(i) || encSpec.sss.isCompSpecified(i) || encSpec.css.isCompSpecified(i) || encSpec.pss.isCompSpecified(i) || encSpec.cblks.isCompSpecified(i) || (isEresUsed != isEresUsedinComp))
// Some component non-default stuff => need COC
writeCOC(true, 0, i);
}
// +-------------------------------+
// | Quantization Default (QCD) |
// +-------------------------------+
writeMainQCD();
// +-------------------------------+
// | Quantization Component (QCC) |
// +-------------------------------+
// Write needed QCC markers
for (i = 0; i < nComp; i++)
{
if (dwt.getNomRangeBits(i) != defimgn || encSpec.qts.isCompSpecified(i) || encSpec.qsss.isCompSpecified(i) || encSpec.dls.isCompSpecified(i) || encSpec.gbs.isCompSpecified(i))
{
writeMainQCC(i);
}
}
// +--------------------------+
// | POC maker segment |
// +--------------------------+
Progression[] prog = (Progression[]) (encSpec.pocs.getDefault());
if (prog.Length > 1)
writePOC(true, 0);
// +---------------------------+
// | Comments (COM) |
// +---------------------------+
writeCOM();
}
public static byte[] EncodeJPEG(Image jpgImage)
{
Tiler imgtiler;
ForwCompTransf fctransf;
ImgDataConverter converter;
EncoderSpecs encSpec;
ForwardWT dwt;
Quantizer quant;
ROIScaler rois;
EntropyCoder ecoder;
PostCompRateAllocator ralloc;
HeaderEncoder headenc;
CodestreamWriter bwriter;
float rate = Single.MaxValue;
ImgReaderGDI imgsrc = new ImgReaderGDI(jpgImage);
imgtiler = new Tiler(imgsrc, 0, 0, 0, 0, jpgImage.Width, jpgImage.Height);
int ntiles = imgtiler.getNumTiles();
encSpec = new EncoderSpecs(ntiles, 3, imgsrc, pl);
fctransf = new ForwCompTransf(imgtiler, encSpec);
converter = new ImgDataConverter(fctransf);
dwt = ForwardWT.createInstance(converter, pl, encSpec);
quant = Quantizer.createInstance(dwt, encSpec);
rois = ROIScaler.createInstance(quant, pl, encSpec);
ecoder = EntropyCoder.createInstance(rois, pl, encSpec.cblks,
encSpec.pss, encSpec.bms,
encSpec.mqrs, encSpec.rts,
encSpec.css, encSpec.sss,
encSpec.lcs, encSpec.tts);
using (MemoryStream stream = new MemoryStream())
{
bwriter = new FileCodestreamWriter(stream, Int32.MaxValue);
ralloc = PostCompRateAllocator.createInstance(ecoder, pl, rate, bwriter, encSpec);
headenc = new HeaderEncoder(imgsrc, new bool[3], dwt, imgtiler, encSpec, rois, ralloc, pl);
ralloc.HeaderEncoder = headenc;
headenc.encodeMainHeader();
ralloc.initialize();
headenc.reset();
headenc.encodeMainHeader();
bwriter.commitBitstreamHeader(headenc);
ralloc.runAndWrite();
bwriter.close();
return stream.ToArray();
}
}