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85 |
jamey.hick |
// The MIT License
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// Copyright (c) 2006-2007 Massachusetts Institute of Technology
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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84 |
jamey.hick |
//**********************************************************************
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// nC Calculator implementation
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//----------------------------------------------------------------------
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//
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//
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package mkCalc_nC;
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import H264Types::*;
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import ICalc_nC::*;
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import FIFO::*;
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import Connectable::*;
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import GetPut::*;
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import ClientServer::*;
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(* synthesize *)
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module mkCalc_nC( Calc_nC );
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Reg#(Bit#(PicWidthSz)) picWidth <- mkReg(maxPicWidthInMB);
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Reg#(Bit#(PicAreaSz)) firstMb <- mkReg(0);
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Reg#(Bit#(PicAreaSz)) currMb <- mkReg(0);
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Reg#(Bit#(PicAreaSz)) currMbHor <- mkReg(0);//horizontal position of currMb
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Reg#(Bit#(1)) waiting <- mkReg(0);
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Reg#(Bit#(1)) reqCount <- mkReg(0);
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Reg#(Bit#(2)) respCount <- mkReg(0);
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Reg#(Bit#(1)) ipcmCount <- mkReg(0);
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Reg#(Bit#(PicAreaSz)) pskipCount <- mkReg(0);
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Reg#(Bit#(20)) leftVal <- mkReg(0);
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Reg#(Bit#(20)) topVal <- mkReg(0);
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Reg#(Bit#(10)) leftValChroma0 <- mkReg(0);
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Reg#(Bit#(10)) topValChroma0 <- mkReg(0);
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Reg#(Bit#(10)) leftValChroma1 <- mkReg(0);
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Reg#(Bit#(10)) topValChroma1 <- mkReg(0);
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FIFO#(MemReq#(TAdd#(PicWidthSz,1),20)) memReqQ <- mkFIFO;
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FIFO#(MemResp#(20)) memRespQ <- mkFIFO;
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Bit#(1) bit1 = 1;
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Bit#(1) bit0 = 0;
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rule currMbHorUpdate( !(currMbHor
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Bit#(PicAreaSz) temp = zeroExtend(picWidth);
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if((currMbHor >> 3) >= temp)
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currMbHor <= currMbHor - (temp << 3);
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else
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currMbHor <= currMbHor - temp;
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endrule
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rule sendReq ( waiting == 1 && reqCount > 0 );
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit1,temp2};
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memReqQ.enq(tagged LoadReq temp );
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reqCount <= reqCount-1;
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endrule
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rule receiveResp ( waiting == 1 &&& respCount > 0 &&& memRespQ.first() matches tagged LoadResp .data );
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if( respCount == 2 )
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topVal <= data;
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else
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begin
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topValChroma0 <= data[9:0];
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topValChroma1 <= data[19:10];
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waiting <= 0;
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end
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memRespQ.deq();
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respCount <= respCount - 1;
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endrule
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rule ipcmReq ( waiting == 1 && ipcmCount > 0 );
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currMb <= currMb+1;
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currMbHor <= currMbHor+1;
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit1,temp2};
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memReqQ.enq(tagged StoreReq {addr:temp,data:20'b10000100001000010000} );
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ipcmCount <= 0;
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waiting <= 0;
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endrule
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rule pskipReq ( waiting == 1 && pskipCount > 0 && currMbHor
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if(pskipCount[0] == 1)
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begin
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currMb <= currMb+1;
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currMbHor <= currMbHor+1;
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit1,temp2};
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memReqQ.enq(StoreReq {addr:temp,data:20'b00000000000000000000} );
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if(pskipCount == 1)
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waiting <= 0;
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end
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else
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begin
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit0,temp2};
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memReqQ.enq(StoreReq {addr:temp,data:20'b00000000000000000000} );
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end
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pskipCount <= pskipCount - 1;
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endrule
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method Action initialize_picWidth( Bit#(PicWidthSz) picWidthInMb ) if( waiting == 0 && currMbHor
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picWidth <= picWidthInMb;
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endmethod
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method Action initialize( Bit#(PicAreaSz) firstMbAddr ) if( waiting == 0 && currMbHor
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firstMb <= firstMbAddr;
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currMb <= firstMbAddr;
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currMbHor <= firstMbAddr;
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leftVal <= 0;
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leftValChroma0 <= 0;
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leftValChroma1 <= 0;
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endmethod
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method Action loadMb( Bit#(PicAreaSz) mbAddr ) if( waiting == 0 && currMbHor
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if( mbAddr != currMb )
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$display( "ERROR EntropyDec: mkCalc_nC loadMb wrong mbAddr" );
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else
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begin
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if( currMbHor == 0 || currMb == firstMb)
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begin
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leftVal <= 20'b11111111111111111111;
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leftValChroma0 <= 10'b1111111111;
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leftValChroma1 <= 10'b1111111111;
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end
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if( currMb-firstMb < zeroExtend(picWidth) )
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begin
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topVal <= 20'b11111111111111111111;
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topValChroma0 <= 10'b1111111111;
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topValChroma1 <= 10'b1111111111;
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end
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else
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begin
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waiting <= 1;
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reqCount <= 1;
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respCount <= 2;
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit0,temp2};
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memReqQ.enq(tagged LoadReq temp );
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//$display( "ERROR EntropyDec: mkCalc_nC loadMb incomplete" );
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end
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end
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endmethod
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method Bit#(5) nCcalc_luma( Bit#(4) microBlockNum ) if( waiting == 0 && currMbHor
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Bit#(6) templeft = 0;
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Bit#(6) temptop = 0;
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if(microBlockNum[3]==0 && microBlockNum[1]==0)
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templeft = zeroExtend(leftVal[4:0]);
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else if(microBlockNum[3]==0 && microBlockNum[1]==1)
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templeft = zeroExtend(leftVal[9:5]);
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else if(microBlockNum[3]==1 && microBlockNum[1]==0)
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templeft = zeroExtend(leftVal[14:10]);
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else
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templeft = zeroExtend(leftVal[19:15]);
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if(microBlockNum[2]==0 && microBlockNum[0]==0)
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temptop = zeroExtend(topVal[4:0]);
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else if(microBlockNum[2]==0 && microBlockNum[0]==1)
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temptop = zeroExtend(topVal[9:5]);
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else if(microBlockNum[2]==1 && microBlockNum[0]==0)
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temptop = zeroExtend(topVal[14:10]);
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else
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temptop = zeroExtend(topVal[19:15]);
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if(temptop!=6'b011111 && templeft!=6'b011111)
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return truncate((temptop+templeft+1) >> 1);
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else if(templeft!=6'b011111)
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return truncate(templeft);
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else if(temptop!=6'b011111)
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return truncate(temptop);
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else
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return 0;
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endmethod
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method Bit#(5) nCcalc_chroma( Bit#(3) microBlockNum ) if( waiting == 0 && currMbHor
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Bit#(6) templeft = 0;
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Bit#(6) temptop = 0;
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if(microBlockNum[2]==0)
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begin
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if(microBlockNum[1]==0)
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templeft = zeroExtend(leftValChroma0[4:0]);
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else
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templeft = zeroExtend(leftValChroma0[9:5]);
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if(microBlockNum[0]==0)
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temptop = zeroExtend(topValChroma0[4:0]);
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else
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temptop = zeroExtend(topValChroma0[9:5]);
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end
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else
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begin
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if(microBlockNum[1]==0)
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templeft = zeroExtend(leftValChroma1[4:0]);
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else
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templeft = zeroExtend(leftValChroma1[9:5]);
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if(microBlockNum[0]==0)
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temptop = zeroExtend(topValChroma1[4:0]);
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else
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temptop = zeroExtend(topValChroma1[9:5]);
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end
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if(temptop!=6'b011111 && templeft!=6'b011111)
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return truncate((temptop+templeft+1) >> 1);
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else if(templeft!=6'b011111)
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return truncate(templeft);
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else if(temptop!=6'b011111)
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return truncate(temptop);
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else
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return 0;
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endmethod
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method Action nNupdate_luma( Bit#(4) microBlockNum, Bit#(5) totalCoeff ) if( waiting == 0 && currMbHor
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Bit#(20) topValTemp = topVal;
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if(microBlockNum[3]==0 && microBlockNum[1]==0)
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leftVal <= {leftVal[19:5] , totalCoeff};
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else if(microBlockNum[3]==0 && microBlockNum[1]==1)
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leftVal <= {{leftVal[19:10] , totalCoeff} , leftVal[4:0]};
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else if(microBlockNum[3]==1 && microBlockNum[1]==0)
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leftVal <= {{leftVal[19:15] , totalCoeff} , leftVal[9:0]};
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else
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leftVal <= {totalCoeff , leftVal[14:0]};
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if(microBlockNum[2]==0 && microBlockNum[0]==0)
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topValTemp = {topVal[19:5] , totalCoeff};
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else if(microBlockNum[2]==0 && microBlockNum[0]==1)
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topValTemp = {{topVal[19:10] , totalCoeff} , topVal[4:0]};
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else if(microBlockNum[2]==1 && microBlockNum[0]==0)
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topValTemp = {{topVal[19:15] , totalCoeff} , topVal[9:0]};
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else
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topValTemp = {totalCoeff , topVal[14:0]};
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topVal <= topValTemp;
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if(microBlockNum == 15)
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begin
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit0,temp2};
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memReqQ.enq(StoreReq {addr:temp,data:topValTemp} );
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end
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//$display( "TRACE nNupdate_luma old leftVal %b", leftVal );
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//$display( "TRACE nNupdate_luma old topVal %b", topVal );
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//$display( "TRACE nNupdate_luma microBlockNum %0d", microBlockNum );
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//$display( "TRACE nNupdate_luma totalCoeff %0d", totalCoeff );
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endmethod
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method Action nNupdate_chroma( Bit#(3) microBlockNum, Bit#(5) totalCoeff ) if( waiting == 0 && currMbHor
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Bit#(10) topValChroma0Temp = topValChroma0;
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Bit#(10) topValChroma1Temp = topValChroma1;
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if(microBlockNum[2]==0)
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begin
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if(microBlockNum[1]==0)
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leftValChroma0 <= {leftValChroma0[9:5] , totalCoeff};
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else
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leftValChroma0 <= {totalCoeff , leftValChroma0[4:0]};
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if(microBlockNum[0]==0)
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topValChroma0Temp = {topValChroma0[9:5] , totalCoeff};
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else
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topValChroma0Temp = {totalCoeff , topValChroma0[4:0]};
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end
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else
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begin
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if(microBlockNum[1]==0)
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leftValChroma1 <= {leftValChroma1[9:5] , totalCoeff};
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else
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leftValChroma1 <= {totalCoeff , leftValChroma1[4:0]};
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if(microBlockNum[0]==0)
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topValChroma1Temp = {topValChroma1[9:5] , totalCoeff};
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else
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topValChroma1Temp = {totalCoeff , topValChroma1[4:0]};
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end
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topValChroma0 <= topValChroma0Temp;
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topValChroma1 <= topValChroma1Temp;
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| 285 |
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if(microBlockNum == 7)
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begin
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| 287 |
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currMb <= currMb+1;
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currMbHor <= currMbHor+1;
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| 289 |
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit1,temp2};
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| 291 |
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memReqQ.enq(StoreReq {addr:temp,data:{topValChroma1Temp,topValChroma0Temp}} );
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| 292 |
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end
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| 293 |
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endmethod
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| 294 |
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| 295 |
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method Action nNupdate_pskip( Bit#(PicAreaSz) inmb_skip_run ) if( waiting == 0 && currMbHor
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| 296 |
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//$display( "TRACE nNupdate_pskip mb_skip_run = %0d", inmb_skip_run );
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| 297 |
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| 298 |
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if(inmb_skip_run > 0)
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| 299 |
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begin
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| 300 |
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waiting <= 1;
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pskipCount <= (inmb_skip_run << 1)-1;
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| 302 |
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Bit#(PicWidthSz) temp2 = truncate(currMbHor);
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| 303 |
|
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Bit#(TAdd#(PicWidthSz,1)) temp = {bit0,temp2};
|
| 304 |
|
|
memReqQ.enq(StoreReq {addr:temp,data:20'b00000000000000000000} );
|
| 305 |
|
|
leftVal <= 0;
|
| 306 |
|
|
leftValChroma0 <= 10'b0000000000;
|
| 307 |
|
|
leftValChroma1 <= 10'b0000000000;
|
| 308 |
|
|
end
|
| 309 |
|
|
endmethod
|
| 310 |
|
|
|
| 311 |
|
|
method Action nNupdate_ipcm() if( waiting == 0 && currMbHor
|
| 312 |
|
|
leftVal <= 20'b10000100001000010000;
|
| 313 |
|
|
leftValChroma0 <= 10'b1000010000;
|
| 314 |
|
|
leftValChroma1 <= 10'b1000010000;
|
| 315 |
|
|
//$display( "TRACE nNupdate_ipcm");
|
| 316 |
|
|
|
| 317 |
|
|
waiting <= 1;
|
| 318 |
|
|
ipcmCount <= 1;
|
| 319 |
|
|
Bit#(PicWidthSz) temp2 = truncate(currMbHor);
|
| 320 |
|
|
Bit#(TAdd#(PicWidthSz,1)) temp = {bit0,temp2};
|
| 321 |
|
|
memReqQ.enq(StoreReq {addr:temp,data:20'b10000100001000010000} );
|
| 322 |
|
|
endmethod
|
| 323 |
|
|
|
| 324 |
|
|
interface Client mem_client;
|
| 325 |
|
|
interface Get request = fifoToGet(memReqQ);
|
| 326 |
|
|
interface Put response = fifoToPut(memRespQ);
|
| 327 |
|
|
endinterface
|
| 328 |
|
|
|
| 329 |
|
|
|
| 330 |
|
|
endmodule
|
| 331 |
|
|
|
| 332 |
|
|
|
| 333 |
|
|
|
| 334 |
|
|
endpackage
|
