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jamey.hick |
//**********************************************************************
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// Inverse Quantizer and Inverse Transformer implementation
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//----------------------------------------------------------------------
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//
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//
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package mkInverseTrans;
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import H264Types::*;
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import IInverseTrans::*;
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import FIFO::*;
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import Vector::*;
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import Connectable::*;
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import GetPut::*;
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import ClientServer::*;
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//-----------------------------------------------------------
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// Local Datatypes
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//-----------------------------------------------------------
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typedef union tagged
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{
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void Start; //not working on anything in particular
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void Intra16x16DC;
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void Intra16x16;
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void ChromaDC;
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void Chroma;
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void Regular4x4;
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}
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State deriving(Eq,Bits);
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typedef union tagged
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{
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// void Initializing; //not working on anything in particular
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void Passing; //not working on anything in particular
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void LoadingDC;
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void Scaling; //does not include scaling for DC (just loading in that case)
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void Transforming;
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void ScalingDC;
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void Outputing;
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}
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Process deriving(Eq,Bits);
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//-----------------------------------------------------------
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// Helper functions
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function Bit#(6) qpi_to_qpc( Bit#(6) qpi );//mapping from qpi to qpc
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case ( qpi )
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30: return 29;
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31: return 30;
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32: return 31;
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33: return 32;
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34: return 32;
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35: return 33;
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36: return 34;
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37: return 34;
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38: return 35;
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39: return 35;
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40: return 36;
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41: return 36;
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42: return 37;
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43: return 37;
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44: return 37;
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45: return 38;
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46: return 38;
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47: return 38;
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48: return 39;
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49: return 39;
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50: return 39;
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51: return 39;
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default: return qpi;
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endcase
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endfunction
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function Bit#(4) reverseInverseZigZagScan( Bit#(4) idx );
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case ( idx )
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0: return 15;
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1: return 14;
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2: return 11;
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3: return 7;
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4: return 10;
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5: return 13;
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6: return 12;
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7: return 9;
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8: return 6;
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9: return 3;
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10: return 2;
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11: return 5;
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12: return 8;
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13: return 4;
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14: return 1;
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15: return 0;
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endcase
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endfunction
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function Tuple2#(Bit#(4),Bit#(3)) qpdivmod6( Bit#(6) qp );
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Bit#(6) tempqp = qp;
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Bit#(4) tempdiv = 0;
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for(Integer ii=5; ii>=2; ii=ii-1)
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begin
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if(tempqp >= (6'b000011 << (fromInteger(ii)-1)))
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begin
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tempqp = tempqp - (6'b000011 << (fromInteger(ii)-1));
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tempdiv = tempdiv | (4'b0001 << (fromInteger(ii)-2));
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end
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end
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return tuple2(tempdiv,truncate(tempqp));
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endfunction
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function Vector#(4,Bit#(16)) dcTransFunc( Bit#(16) in0, Bit#(16) in1, Bit#(16) in2, Bit#(16) in3 );
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Vector#(4,Bit#(16)) resultVector = replicate(0);
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resultVector[0] = in0 + in1 + in2 + in3;
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resultVector[1] = in0 + in1 - in2 - in3;
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resultVector[2] = in0 - in1 - in2 + in3;
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resultVector[3] = in0 - in1 + in2 - in3;
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return resultVector;
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endfunction
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function Vector#(4,Bit#(16)) transFunc( Bit#(16) in0, Bit#(16) in1, Bit#(16) in2, Bit#(16) in3 );
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Vector#(4,Bit#(16)) resultVector = replicate(0);
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Bit#(16) workValue0 = in0 + in2;
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Bit#(16) workValue1 = in0 - in2;
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Bit#(16) workValue2 = signedShiftRight(in1,1) - in3;
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Bit#(16) workValue3 = in1 + signedShiftRight(in3,1);
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resultVector[0] = workValue0 + workValue3;
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resultVector[1] = workValue1 + workValue2;
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resultVector[2] = workValue1 - workValue2;
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resultVector[3] = workValue0 - workValue3;
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return resultVector;
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endfunction
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//-----------------------------------------------------------
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// Inverse Quantizer and Inverse Transformer Module
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//-----------------------------------------------------------
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(* synthesize *)
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module mkInverseTrans( IInverseTrans );
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FIFO#(EntropyDecOT_InverseTrans) infifo <- mkSizedFIFO(inverseTrans_infifo_size);
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FIFO#(InverseTransOT) outfifo <- mkFIFO;
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Reg#(Bit#(4)) blockNum <- mkReg(0);
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Reg#(Bit#(4)) pixelNum <- mkReg(0);//also used as a regular counter during inverse transformation
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Reg#(State) state <- mkReg(Start);
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Reg#(Process) process <- mkReg(Passing);
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Reg#(Bit#(5)) chroma_qp_index_offset <- mkReg(0);
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Reg#(Bit#(6)) ppspic_init_qp <- mkReg(0);
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Reg#(Bit#(6)) slice_qp <- mkReg(0);
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Reg#(Bit#(6)) qpy <- mkReg(0);//Calculating it requires 8 bits, but value only 0 to 51
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Reg#(Bit#(6)) qpc <- mkReg(0);
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Reg#(Bit#(3)) qpymod6 <- mkReg(0);
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Reg#(Bit#(3)) qpcmod6 <- mkReg(0);
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Reg#(Bit#(4)) qpydiv6 <- mkReg(0);
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Reg#(Bit#(4)) qpcdiv6 <- mkReg(0);
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Reg#(Vector#(16,Bit#(16))) workVector <- mkRegU();
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Reg#(Vector#(16,Bit#(16))) storeVector <- mkRegU();
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//-----------------------------------------------------------
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// Rules
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rule passing (process matches Passing);
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//$display( "Trace Inverse Trans: passing infifo packed %h", pack(infifo.first()));
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case (infifo.first()) matches
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tagged NewUnit . xdata :
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begin
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infifo.deq();
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$display("ccl3newunit");
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$display("ccl3rbspbyte %h", xdata);
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end
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tagged SDMmbtype .xdata :
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begin
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infifo.deq();
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$display( "INFO InverseTrans: SDMmbtype %0d", xdata);
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if(mbPartPredMode(xdata,0) == Intra_16x16)
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state <= Intra16x16DC;
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else
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state <= Regular4x4;
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end
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tagged PPSpic_init_qp .xdata :
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begin
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infifo.deq();
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ppspic_init_qp <= truncate(xdata);
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end
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tagged SHslice_qp_delta .xdata :
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begin
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infifo.deq();
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slice_qp <= ppspic_init_qp+truncate(xdata);
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Bit#(6) qpynext = ppspic_init_qp+truncate(xdata);
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qpy <= qpynext;
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Bit#(7) qpitemp = zeroExtend(chroma_qp_index_offset+12) + zeroExtend(qpynext);
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Bit#(6) qpi;
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if(qpitemp < 12)
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qpi = 0;
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else if(qpitemp > 63)
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qpi = 51;
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else
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qpi = truncate(qpitemp-12);
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qpc <= qpi_to_qpc(qpi);
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outfifo.enq(IBTmb_qp {qpy:qpynext,qpc:qpi_to_qpc(qpi)});
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end
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tagged SDMmb_qp_delta .xdata :
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begin
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infifo.deq();
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Bit#(8) qpytemp = zeroExtend(qpy) + zeroExtend(xdata+52);
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Bit#(6) qpynext;
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if(qpytemp >= 104)
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qpynext = truncate(qpytemp - 104);
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else if(qpytemp >= 52)
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qpynext = truncate(qpytemp - 52);
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else
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qpynext = truncate(qpytemp);
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qpy <= qpynext;
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//$display( "TRACE InverseTrans: qpy %0d", qpynext );
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//$display( "TRACE InverseTrans: qpy %0d", qpynext );
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Tuple2#(Bit#(4),Bit#(3)) temptuple = qpdivmod6(qpynext);
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qpydiv6 <= tpl_1(temptuple);
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qpymod6 <= tpl_2(temptuple);
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//$display( "TRACE InverseTrans: qpydiv6 %0d", tpl_1(temptuple) );
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//$display( "TRACE InverseTrans: qpymod6 %0d", tpl_2(temptuple) );
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Bit#(7) qpitemp = zeroExtend(chroma_qp_index_offset+12) + zeroExtend(qpynext);
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Bit#(6) qpi;
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if(qpitemp < 12)
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qpi = 0;
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else if(qpitemp > 63)
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qpi = 51;
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else
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qpi = truncate(qpitemp-12);
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qpc <= qpi_to_qpc(qpi);
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outfifo.enq(IBTmb_qp {qpy:qpynext,qpc:qpi_to_qpc(qpi)});
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end
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tagged PPSchroma_qp_index_offset .xdata :
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begin
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infifo.deq();
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chroma_qp_index_offset <= xdata;
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end
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tagged SDMRcoeffLevel .xdata :
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begin
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blockNum <= 0;
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pixelNum <= 0;
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if(state == Intra16x16DC)
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begin
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$display( "INFO InverseTrans: 16x16 MB" );
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process <= LoadingDC;
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end
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else
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begin
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$display( "INFO InverseTrans: Non-16x16 MB" );
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process <= Scaling;
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end
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workVector <= replicate(0);
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Tuple2#(Bit#(4),Bit#(3)) temptuple = qpdivmod6(qpc);
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qpcdiv6 <= tpl_1(temptuple);
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qpcmod6 <= tpl_2(temptuple);
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end
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tagged SDMRcoeffLevelZeros .xdata :
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begin
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blockNum <= 0;
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pixelNum <= 0;
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| 275 |
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if(state == Intra16x16DC)
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begin
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| 277 |
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$display( "INFO InverseTrans: 16x16 MB" );
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process <= LoadingDC;
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end
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| 280 |
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else
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begin
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| 282 |
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$display( "INFO InverseTrans: Non-16x16 MB" );
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| 283 |
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process <= Scaling;
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| 284 |
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end
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| 285 |
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workVector <= replicate(0);
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| 286 |
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Tuple2#(Bit#(4),Bit#(3)) temptuple = qpdivmod6(qpc);
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| 287 |
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qpcdiv6 <= tpl_1(temptuple);
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| 288 |
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qpcmod6 <= tpl_2(temptuple);
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| 289 |
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end
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| 290 |
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default: infifo.deq();
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endcase
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endrule
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| 293 |
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| 294 |
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| 295 |
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rule loadingDC (process matches LoadingDC);
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Vector#(16,Bit#(16)) workVectorTemp = workVector;
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| 297 |
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| 298 |
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case (infifo.first()) matches
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| 299 |
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tagged SDMRcoeffLevelZeros .xdata :
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| 300 |
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begin
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| 301 |
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infifo.deq();
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| 302 |
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pixelNum <= pixelNum+truncate(xdata);
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| 303 |
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if((state==ChromaDC && zeroExtend(pixelNum)+xdata==8) || zeroExtend(pixelNum)+xdata==16)
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| 304 |
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process <= Transforming;
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| 305 |
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else if((state==ChromaDC && zeroExtend(pixelNum)+xdata>8) || zeroExtend(pixelNum)+xdata>16)
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| 306 |
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$display( "ERROR InverseTrans: loadingDC index overflow" );
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| 307 |
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end
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| 308 |
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tagged SDMRcoeffLevel .xdata :
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| 309 |
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begin
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| 310 |
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infifo.deq();
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| 311 |
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Bit#(16) workValue = signExtend(xdata);
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| 312 |
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if(state==ChromaDC)
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| 313 |
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begin
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| 314 |
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if(pixelNum<4)
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| 315 |
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workVector <= update(workVectorTemp, 3-pixelNum, workValue);
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| 316 |
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else
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| 317 |
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workVector <= update(workVectorTemp, 11-pixelNum, workValue);
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| 318 |
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end
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| 319 |
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else
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| 320 |
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workVector <= update(workVectorTemp, reverseInverseZigZagScan(pixelNum), workValue);
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| 321 |
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pixelNum <= pixelNum+1;
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| 322 |
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if((state==ChromaDC && pixelNum==7) || pixelNum==15)
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| 323 |
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process <= Transforming;
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| 324 |
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else if((state==ChromaDC && pixelNum>7) || pixelNum>15)
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| 325 |
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$display( "ERROR InverseTrans: loadingDC index overflow" );
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| 326 |
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end
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| 327 |
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default: process <= Passing;
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| 328 |
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endcase
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| 329 |
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endrule
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| 330 |
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| 331 |
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| 332 |
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rule scaling (process matches Scaling);
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| 333 |
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Vector#(16,Bit#(16)) workVectorTemp = workVector;
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| 334 |
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Vector#(16,Bit#(16)) storeVectorTemp = storeVector;
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| 335 |
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| 336 |
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case (infifo.first()) matches
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| 337 |
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tagged SDMRcoeffLevelZeros .xdata :
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| 338 |
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|
begin
|
| 339 |
|
|
infifo.deq();
|
| 340 |
|
|
if(zeroExtend(pixelNum)+xdata==16 || (zeroExtend(pixelNum)+xdata==15 && (state==Chroma || state==Intra16x16)))
|
| 341 |
|
|
begin
|
| 342 |
|
|
Bit#(16) prevValue0=0;
|
| 343 |
|
|
if(state==Intra16x16)
|
| 344 |
|
|
prevValue0 = select(storeVectorTemp, {blockNum[3],blockNum[1],blockNum[2],blockNum[0]});
|
| 345 |
|
|
else if(state==Chroma)
|
| 346 |
|
|
prevValue0 = select(storeVectorTemp, blockNum);
|
| 347 |
|
|
if(xdata==16 || (xdata==15 && (state==Chroma || state==Intra16x16) && prevValue0==0))
|
| 348 |
|
|
begin
|
| 349 |
|
|
outfifo.enq(ITBcoeffLevelZeros);
|
| 350 |
|
|
////$display("ccl3IBTresidualZeros %0d", 16);
|
| 351 |
|
|
workVector <= replicate(0);
|
| 352 |
|
|
if(state==Chroma)
|
| 353 |
|
|
begin
|
| 354 |
|
|
if(blockNum<7)
|
| 355 |
|
|
blockNum <= blockNum+1;
|
| 356 |
|
|
else if (blockNum==7)
|
| 357 |
|
|
begin
|
| 358 |
|
|
blockNum <= 0;
|
| 359 |
|
|
process <= Passing;
|
| 360 |
|
|
end
|
| 361 |
|
|
else
|
| 362 |
|
|
$display( "ERROR InverseTrans: scaling outputing chroma unexpected blockNum" );
|
| 363 |
|
|
end
|
| 364 |
|
|
else
|
| 365 |
|
|
begin
|
| 366 |
|
|
blockNum <= blockNum+1;
|
| 367 |
|
|
if(blockNum==15)
|
| 368 |
|
|
begin
|
| 369 |
|
|
state <= ChromaDC;
|
| 370 |
|
|
process <= LoadingDC;
|
| 371 |
|
|
end
|
| 372 |
|
|
end
|
| 373 |
|
|
end
|
| 374 |
|
|
else
|
| 375 |
|
|
process <= Transforming;
|
| 376 |
|
|
pixelNum <= 0;
|
| 377 |
|
|
end
|
| 378 |
|
|
else if(zeroExtend(pixelNum)+xdata>16 || (zeroExtend(pixelNum)+xdata>15 && (state==Chroma || state==Intra16x16)))
|
| 379 |
|
|
$display( "ERROR InverseTrans: scaling index overflow" );
|
| 380 |
|
|
else
|
| 381 |
|
|
pixelNum <= pixelNum+truncate(xdata);
|
| 382 |
|
|
//$display( "TRACE InverseTrans: coeff zeros %0d", xdata );
|
| 383 |
|
|
end
|
| 384 |
|
|
tagged SDMRcoeffLevel .xdata :
|
| 385 |
|
|
begin
|
| 386 |
|
|
infifo.deq();
|
| 387 |
|
|
Bit#(6) qp;
|
| 388 |
|
|
Bit#(4) qpdiv6;
|
| 389 |
|
|
Bit#(3) qpmod6;
|
| 390 |
|
|
if(state==Chroma)
|
| 391 |
|
|
begin
|
| 392 |
|
|
qp = qpc;
|
| 393 |
|
|
qpdiv6 = qpcdiv6;
|
| 394 |
|
|
qpmod6 = qpcmod6;
|
| 395 |
|
|
end
|
| 396 |
|
|
else
|
| 397 |
|
|
begin
|
| 398 |
|
|
qp = qpy;
|
| 399 |
|
|
qpdiv6 = qpydiv6;
|
| 400 |
|
|
qpmod6 = qpymod6;
|
| 401 |
|
|
end
|
| 402 |
|
|
Bit#(5) levelScaleValue=0;
|
| 403 |
|
|
if(pixelNum==15 || pixelNum==12 || pixelNum==10 || pixelNum==4)
|
| 404 |
|
|
begin
|
| 405 |
|
|
case(qpmod6)
|
| 406 |
|
|
0: levelScaleValue = 10;
|
| 407 |
|
|
1: levelScaleValue = 11;
|
| 408 |
|
|
2: levelScaleValue = 13;
|
| 409 |
|
|
3: levelScaleValue = 14;
|
| 410 |
|
|
4: levelScaleValue = 16;
|
| 411 |
|
|
5: levelScaleValue = 18;
|
| 412 |
|
|
default: $display( "ERROR InverseTrans: levelScaleGen case default" );
|
| 413 |
|
|
endcase
|
| 414 |
|
|
end
|
| 415 |
|
|
else if(pixelNum==11 || pixelNum==5 || pixelNum==3 || pixelNum==0)
|
| 416 |
|
|
begin
|
| 417 |
|
|
case(qpmod6)
|
| 418 |
|
|
0: levelScaleValue = 16;
|
| 419 |
|
|
1: levelScaleValue = 18;
|
| 420 |
|
|
2: levelScaleValue = 20;
|
| 421 |
|
|
3: levelScaleValue = 23;
|
| 422 |
|
|
4: levelScaleValue = 25;
|
| 423 |
|
|
5: levelScaleValue = 29;
|
| 424 |
|
|
default: $display( "ERROR InverseTrans: levelScaleGen case default" );
|
| 425 |
|
|
endcase
|
| 426 |
|
|
end
|
| 427 |
|
|
else
|
| 428 |
|
|
begin
|
| 429 |
|
|
case(qpmod6)
|
| 430 |
|
|
0: levelScaleValue = 13;
|
| 431 |
|
|
1: levelScaleValue = 14;
|
| 432 |
|
|
2: levelScaleValue = 16;
|
| 433 |
|
|
3: levelScaleValue = 18;
|
| 434 |
|
|
4: levelScaleValue = 20;
|
| 435 |
|
|
5: levelScaleValue = 23;
|
| 436 |
|
|
default: $display( "ERROR InverseTrans: levelScaleGen case default" );
|
| 437 |
|
|
endcase
|
| 438 |
|
|
end
|
| 439 |
|
|
Bit#(16) workValueTemp = zeroExtend(levelScaleValue)*signExtend(xdata);
|
| 440 |
|
|
Bit#(16) workValue;
|
| 441 |
|
|
workValue = workValueTemp << zeroExtend(qpdiv6);
|
| 442 |
|
|
workVector <= update(workVectorTemp, reverseInverseZigZagScan(pixelNum), workValue);
|
| 443 |
|
|
if(pixelNum==15 || (pixelNum==14 && (state==Chroma || state==Intra16x16)))
|
| 444 |
|
|
begin
|
| 445 |
|
|
process <= Transforming;
|
| 446 |
|
|
pixelNum <= 0;
|
| 447 |
|
|
end
|
| 448 |
|
|
else
|
| 449 |
|
|
pixelNum <= pixelNum+1;
|
| 450 |
|
|
end
|
| 451 |
|
|
default: process <= Passing;
|
| 452 |
|
|
endcase
|
| 453 |
|
|
endrule
|
| 454 |
|
|
|
| 455 |
|
|
|
| 456 |
|
|
rule transforming (process matches Transforming);
|
| 457 |
|
|
Vector#(16,Bit#(16)) workVectorTemp = workVector;
|
| 458 |
|
|
Vector#(16,Bit#(16)) workVectorNew = workVector;
|
| 459 |
|
|
Vector#(16,Bit#(16)) storeVectorTemp = storeVector;
|
| 460 |
|
|
|
| 461 |
|
|
if(state == ChromaDC)
|
| 462 |
|
|
begin
|
| 463 |
|
|
case ( pixelNum )
|
| 464 |
|
|
8:
|
| 465 |
|
|
begin
|
| 466 |
|
|
workVectorNew[0] = workVectorTemp[0] + workVectorTemp[2];
|
| 467 |
|
|
workVectorNew[1] = workVectorTemp[1] + workVectorTemp[3];
|
| 468 |
|
|
workVectorNew[2] = workVectorTemp[0] - workVectorTemp[2];
|
| 469 |
|
|
workVectorNew[3] = workVectorTemp[1] - workVectorTemp[3];
|
| 470 |
|
|
pixelNum <= pixelNum+1;
|
| 471 |
|
|
end
|
| 472 |
|
|
9:
|
| 473 |
|
|
begin
|
| 474 |
|
|
workVectorNew[0] = workVectorTemp[0] + workVectorTemp[1];
|
| 475 |
|
|
workVectorNew[1] = workVectorTemp[0] - workVectorTemp[1];
|
| 476 |
|
|
workVectorNew[2] = workVectorTemp[2] + workVectorTemp[3];
|
| 477 |
|
|
workVectorNew[3] = workVectorTemp[2] - workVectorTemp[3];
|
| 478 |
|
|
pixelNum <= pixelNum+1;
|
| 479 |
|
|
end
|
| 480 |
|
|
10:
|
| 481 |
|
|
begin
|
| 482 |
|
|
workVectorNew[4] = workVectorTemp[4] + workVectorTemp[6];
|
| 483 |
|
|
workVectorNew[5] = workVectorTemp[5] + workVectorTemp[7];
|
| 484 |
|
|
workVectorNew[6] = workVectorTemp[4] - workVectorTemp[6];
|
| 485 |
|
|
workVectorNew[7] = workVectorTemp[5] - workVectorTemp[7];
|
| 486 |
|
|
pixelNum <= pixelNum+1;
|
| 487 |
|
|
end
|
| 488 |
|
|
11:
|
| 489 |
|
|
begin
|
| 490 |
|
|
workVectorNew[4] = workVectorTemp[4] + workVectorTemp[5];
|
| 491 |
|
|
workVectorNew[5] = workVectorTemp[4] - workVectorTemp[5];
|
| 492 |
|
|
workVectorNew[6] = workVectorTemp[6] + workVectorTemp[7];
|
| 493 |
|
|
workVectorNew[7] = workVectorTemp[6] - workVectorTemp[7];
|
| 494 |
|
|
pixelNum <= 0;
|
| 495 |
|
|
process <= ScalingDC;
|
| 496 |
|
|
end
|
| 497 |
|
|
default:
|
| 498 |
|
|
$display( "ERROR InverseTrans: transforming ChromaDC unexpected pixelNum" );
|
| 499 |
|
|
endcase
|
| 500 |
|
|
workVector <= workVectorNew;
|
| 501 |
|
|
end
|
| 502 |
|
|
else if(state == Intra16x16DC)
|
| 503 |
|
|
begin
|
| 504 |
|
|
Vector#(4,Bit#(16)) resultVector = replicate(0);
|
| 505 |
|
|
if(pixelNum < 4)
|
| 506 |
|
|
begin
|
| 507 |
|
|
Bit#(4) tempIndex = zeroExtend(pixelNum[1:0]);
|
| 508 |
|
|
resultVector = dcTransFunc( workVectorTemp[tempIndex], workVectorTemp[tempIndex+4], workVectorTemp[tempIndex+8], workVectorTemp[tempIndex+12] );
|
| 509 |
|
|
for(Integer ii=0; ii<4; ii=ii+1)
|
| 510 |
|
|
workVectorNew[tempIndex+fromInteger(ii*4)] = resultVector[ii];
|
| 511 |
|
|
end
|
| 512 |
|
|
else if(pixelNum < 8)
|
| 513 |
|
|
begin
|
| 514 |
|
|
Bit#(4) tempIndex = {pixelNum[1:0],2'b00};
|
| 515 |
|
|
resultVector = dcTransFunc( workVectorTemp[tempIndex], workVectorTemp[tempIndex+1], workVectorTemp[tempIndex+2], workVectorTemp[tempIndex+3] );
|
| 516 |
|
|
for(Integer ii=0; ii<4; ii=ii+1)
|
| 517 |
|
|
workVectorNew[tempIndex+fromInteger(ii)] = resultVector[ii];
|
| 518 |
|
|
end
|
| 519 |
|
|
else
|
| 520 |
|
|
$display( "ERROR InverseTrans: transforming Intra16x16DC unexpected pixelNum" );
|
| 521 |
|
|
workVector <= workVectorNew;
|
| 522 |
|
|
if(pixelNum == 7)
|
| 523 |
|
|
begin
|
| 524 |
|
|
pixelNum <= 0;
|
| 525 |
|
|
process <= ScalingDC;
|
| 526 |
|
|
end
|
| 527 |
|
|
else
|
| 528 |
|
|
pixelNum <= pixelNum+1;
|
| 529 |
|
|
end
|
| 530 |
|
|
else
|
| 531 |
|
|
begin
|
| 532 |
|
|
Vector#(4,Bit#(16)) resultVector = replicate(0);
|
| 533 |
|
|
if(pixelNum < 4)
|
| 534 |
|
|
begin
|
| 535 |
|
|
Bit#(4) tempIndex = {pixelNum[1:0],2'b00};
|
| 536 |
|
|
Bit#(16) tempValue0 = workVectorTemp[tempIndex];
|
| 537 |
|
|
if(pixelNum==0)
|
| 538 |
|
|
begin
|
| 539 |
|
|
if(state==Intra16x16)
|
| 540 |
|
|
tempValue0 = select(storeVectorTemp, {blockNum[3],blockNum[1],blockNum[2],blockNum[0]});
|
| 541 |
|
|
else if(state==Chroma)
|
| 542 |
|
|
tempValue0 = select(storeVectorTemp, blockNum);
|
| 543 |
|
|
end
|
| 544 |
|
|
resultVector = transFunc( tempValue0, workVectorTemp[tempIndex+1], workVectorTemp[tempIndex+2], workVectorTemp[tempIndex+3] );
|
| 545 |
|
|
for(Integer ii=0; ii<4; ii=ii+1)
|
| 546 |
|
|
workVectorNew[tempIndex+fromInteger(ii)] = resultVector[ii];
|
| 547 |
|
|
end
|
| 548 |
|
|
else if(pixelNum < 8)
|
| 549 |
|
|
begin
|
| 550 |
|
|
Bit#(4) tempIndex = zeroExtend(pixelNum[1:0]);
|
| 551 |
|
|
resultVector = transFunc( workVectorTemp[tempIndex], workVectorTemp[tempIndex+4], workVectorTemp[tempIndex+8], workVectorTemp[tempIndex+12] );
|
| 552 |
|
|
for(Integer ii=0; ii<4; ii=ii+1)
|
| 553 |
|
|
workVectorNew[tempIndex+fromInteger(ii*4)] = resultVector[ii];
|
| 554 |
|
|
end
|
| 555 |
|
|
else
|
| 556 |
|
|
$display( "ERROR InverseTrans: transforming regular unexpected pixelNum" );
|
| 557 |
|
|
workVector <= workVectorNew;
|
| 558 |
|
|
if(pixelNum == 7)
|
| 559 |
|
|
begin
|
| 560 |
|
|
pixelNum <= 0;
|
| 561 |
|
|
process <= Outputing;
|
| 562 |
|
|
end
|
| 563 |
|
|
else
|
| 564 |
|
|
pixelNum <= pixelNum+1;
|
| 565 |
|
|
end
|
| 566 |
|
|
endrule
|
| 567 |
|
|
|
| 568 |
|
|
|
| 569 |
|
|
rule scalingDC (process matches ScalingDC);
|
| 570 |
|
|
Bit#(6) qp;
|
| 571 |
|
|
Bit#(4) qpdiv6;
|
| 572 |
|
|
Bit#(3) qpmod6;
|
| 573 |
|
|
Bit#(6) workOne = 1;
|
| 574 |
|
|
Bit#(16) workValue;
|
| 575 |
|
|
Bit#(22) storeValueTemp;
|
| 576 |
|
|
Bit#(16) storeValue;
|
| 577 |
|
|
Vector#(16,Bit#(16)) workVectorTemp = workVector;
|
| 578 |
|
|
Vector#(16,Bit#(16)) storeVectorTemp = storeVector;
|
| 579 |
|
|
|
| 580 |
|
|
if(state==ChromaDC)
|
| 581 |
|
|
begin
|
| 582 |
|
|
qp = qpc;
|
| 583 |
|
|
qpdiv6 = qpcdiv6;
|
| 584 |
|
|
qpmod6 = qpcmod6;
|
| 585 |
|
|
end
|
| 586 |
|
|
else
|
| 587 |
|
|
begin
|
| 588 |
|
|
qp = qpy;
|
| 589 |
|
|
qpdiv6 = qpydiv6;
|
| 590 |
|
|
qpmod6 = qpymod6;
|
| 591 |
|
|
end
|
| 592 |
|
|
workValue = select(workVectorTemp, pixelNum);
|
| 593 |
|
|
Bit#(5) levelScaleValue=0;
|
| 594 |
|
|
case(qpmod6)
|
| 595 |
|
|
0: levelScaleValue = 10;
|
| 596 |
|
|
1: levelScaleValue = 11;
|
| 597 |
|
|
2: levelScaleValue = 13;
|
| 598 |
|
|
3: levelScaleValue = 14;
|
| 599 |
|
|
4: levelScaleValue = 16;
|
| 600 |
|
|
5: levelScaleValue = 18;
|
| 601 |
|
|
default: $display( "ERROR InverseTrans: scalingDC levelScaleGen case default" );
|
| 602 |
|
|
endcase
|
| 603 |
|
|
storeValueTemp = zeroExtend(levelScaleValue)*signExtend(workValue);
|
| 604 |
|
|
if(state==ChromaDC)
|
| 605 |
|
|
storeValue = truncate( (storeValueTemp << zeroExtend(qpdiv6)) >> 1 );
|
| 606 |
|
|
else
|
| 607 |
|
|
begin
|
| 608 |
|
|
if(qp >= 36)
|
| 609 |
|
|
storeValue = truncate( storeValueTemp << zeroExtend(qpdiv6 - 2) );
|
| 610 |
|
|
else
|
| 611 |
|
|
storeValue = truncate( ((storeValueTemp << 4) + zeroExtend(workOne << zeroExtend(5-qpdiv6))) >> zeroExtend(6 - qpdiv6) );
|
| 612 |
|
|
end
|
| 613 |
|
|
storeVector <= update(storeVectorTemp, pixelNum, storeValue);
|
| 614 |
|
|
if((state==ChromaDC && pixelNum==7) || pixelNum==15)
|
| 615 |
|
|
begin
|
| 616 |
|
|
blockNum <= 0;
|
| 617 |
|
|
pixelNum <= 0;
|
| 618 |
|
|
workVector <= replicate(0);
|
| 619 |
|
|
if(state==ChromaDC)
|
| 620 |
|
|
state <= Chroma;
|
| 621 |
|
|
else
|
| 622 |
|
|
state <= Intra16x16;
|
| 623 |
|
|
process <= Scaling;
|
| 624 |
|
|
end
|
| 625 |
|
|
else if((state==ChromaDC && pixelNum>7) || pixelNum>15)
|
| 626 |
|
|
$display( "ERROR InverseTrans: scalingDC index overflow" );
|
| 627 |
|
|
else
|
| 628 |
|
|
pixelNum <= pixelNum+1;
|
| 629 |
|
|
endrule
|
| 630 |
|
|
|
| 631 |
|
|
|
| 632 |
|
|
rule outputing (process matches Outputing);
|
| 633 |
|
|
Vector#(4,Bit#(10)) outputVector = replicate(0);
|
| 634 |
|
|
Vector#(16,Bit#(16)) workVectorTemp = workVector;
|
| 635 |
|
|
|
| 636 |
|
|
for(Integer ii=0; ii<4; ii=ii+1)
|
| 637 |
|
|
outputVector[ii] = truncate((workVectorTemp[pixelNum+fromInteger(ii)]+32) >> 6);
|
| 638 |
|
|
outfifo.enq(ITBresidual outputVector);
|
| 639 |
|
|
Int#(10) tempint = unpack(outputVector[0]);
|
| 640 |
|
|
$display("ccl3IBTresidual %0d", tempint);
|
| 641 |
|
|
tempint = unpack(outputVector[1]);
|
| 642 |
|
|
$display("ccl3IBTresidual %0d", tempint);
|
| 643 |
|
|
tempint = unpack(outputVector[2]);
|
| 644 |
|
|
$display("ccl3IBTresidual %0d", tempint);
|
| 645 |
|
|
tempint = unpack(outputVector[3]);
|
| 646 |
|
|
$display("ccl3IBTresidual %0d", tempint);
|
| 647 |
|
|
pixelNum <= pixelNum+4;
|
| 648 |
|
|
if(pixelNum==12)
|
| 649 |
|
|
begin
|
| 650 |
|
|
workVector <= replicate(0);
|
| 651 |
|
|
if(state==Chroma)
|
| 652 |
|
|
begin
|
| 653 |
|
|
if(blockNum<7)
|
| 654 |
|
|
begin
|
| 655 |
|
|
blockNum <= blockNum+1;
|
| 656 |
|
|
process <= Scaling;
|
| 657 |
|
|
end
|
| 658 |
|
|
else if (blockNum==7)
|
| 659 |
|
|
begin
|
| 660 |
|
|
blockNum <= 0;
|
| 661 |
|
|
process <= Passing;
|
| 662 |
|
|
end
|
| 663 |
|
|
else
|
| 664 |
|
|
$display( "ERROR InverseTrans: outputing chroma unexpected blockNum" );
|
| 665 |
|
|
end
|
| 666 |
|
|
else
|
| 667 |
|
|
begin
|
| 668 |
|
|
blockNum <= blockNum+1;
|
| 669 |
|
|
if(blockNum==15)
|
| 670 |
|
|
begin
|
| 671 |
|
|
state <= ChromaDC;
|
| 672 |
|
|
process <= LoadingDC;
|
| 673 |
|
|
end
|
| 674 |
|
|
else
|
| 675 |
|
|
process <= Scaling;
|
| 676 |
|
|
end
|
| 677 |
|
|
end
|
| 678 |
|
|
endrule
|
| 679 |
|
|
|
| 680 |
|
|
|
| 681 |
|
|
|
| 682 |
|
|
interface Put ioin = fifoToPut(infifo);
|
| 683 |
|
|
interface Get ioout = fifoToGet(outfifo);
|
| 684 |
|
|
|
| 685 |
|
|
|
| 686 |
|
|
endmodule
|
| 687 |
|
|
|
| 688 |
|
|
endpackage
|
