private void writeDecRefPicMarking(SliceHeader sliceHeader, bool idrSlice, BitWriter writer)
{
if (idrSlice)
{
RefPicMarkingIDR drpmidr = sliceHeader.refPicMarkingIDR;
CAVLCWriter.writeBool(writer, drpmidr.isDiscardDecodedPics(), "SH: no_output_of_prior_pics_flag");
CAVLCWriter.writeBool(writer, drpmidr.isUseForlongTerm(), "SH: long_term_reference_flag");
}
else
{
CAVLCWriter.writeBool(writer, sliceHeader.refPicMarkingNonIDR != null, "SH: adaptive_ref_pic_marking_mode_flag");
if (sliceHeader.refPicMarkingNonIDR != null)
{
RefPicMarking drpmidr = sliceHeader.refPicMarkingNonIDR;
foreach (var mmop in drpmidr.getInstructions())
{
switch (mmop.getType())
{
case RefPicMarking.InstrType.REMOVE_SHORT:
CAVLCWriter.writeUE(writer, 1, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1() - 1, "SH: difference_of_pic_nums_minus1");
break;
case RefPicMarking.InstrType.REMOVE_LONG:
CAVLCWriter.writeUE(writer, 2, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1(), "SH: long_term_pic_num");
break;
case RefPicMarking.InstrType.CONVERT_INTO_LONG:
CAVLCWriter.writeUE(writer, 3, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1() - 1, "SH: difference_of_pic_nums_minus1");
CAVLCWriter.writeUE(writer, mmop.getArg2(), "SH: long_term_frame_idx");
break;
case RefPicMarking.InstrType.TRUNK_LONG:
CAVLCWriter.writeUE(writer, 4, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1() + 1, "SH: max_long_term_frame_idx_plus1");
break;
case RefPicMarking.InstrType.CLEAR:
CAVLCWriter.writeUE(writer, 5, "SH: memory_management_control_operation");
break;
case RefPicMarking.InstrType.MARK_LONG:
CAVLCWriter.writeUE(writer, 6, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1(), "SH: long_term_frame_idx");
break;
}
}
CAVLCWriter.writeUE(writer, 0, "SH: memory_management_control_operation");
}
}
}
public void performMarking(RefPicMarking refPicMarking, Frame picture)
{
Frame saved = saveRef(picture);
if (refPicMarking != null)
{
foreach (var instr in refPicMarking.getInstructions())
{
switch (instr.getType())
{
case RefPicMarking.InstrType.REMOVE_SHORT:
unrefShortTerm(instr.getArg1());
break;
case RefPicMarking.InstrType.REMOVE_LONG:
unrefLongTerm(instr.getArg1());
break;
case RefPicMarking.InstrType.CONVERT_INTO_LONG:
convert(instr.getArg1(), instr.getArg2());
break;
case RefPicMarking.InstrType.TRUNK_LONG:
truncateLongTerm(instr.getArg1() - 1);
break;
case RefPicMarking.InstrType.CLEAR:
clearAll();
break;
case RefPicMarking.InstrType.MARK_LONG:
saveLong(saved, instr.getArg1());
saved = null;
break;
}
}
}
if (saved != null)
{
saveShort(saved);
}
int maxFrames = 1 << (activeSps.log2_max_frame_num_minus4 + 4);
if (refPicMarking == null)
{
int maxShort = Math.Max(1, activeSps.num_ref_frames - vdecoder.lRefs.Count());
int min = int.MaxValue, num = 0, minFn = 0;
for (int i = 0; i < vdecoder.sRefs.Length; i++)
{
if (vdecoder.sRefs[i] != null)
{
int fnWrap = unwrap(firstSliceHeader.frame_num, vdecoder.sRefs[i].getFrameNo(), maxFrames);
if (fnWrap < min)
{
min = fnWrap;
minFn = vdecoder.sRefs[i].getFrameNo();
}
num++;
}
}
if (num > maxShort)
{
// System.out.println("Removing: " + minFn + ", POC: " +
// sRefs[minFn].getPOC());
releaseRef(vdecoder.sRefs[minFn]);
vdecoder.sRefs[minFn] = null;
}
}
}
