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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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// Entropy Decoder implementation
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//----------------------------------------------------------------------
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//
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//
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package mkEntropyDec;
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import H264Types::*;
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import ExpGolomb::*;
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import CAVLC::*;
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import ICalc_nC::*;
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import mkCalc_nC::*;
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import IEntropyDec::*;
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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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//-----------------------------------------------------------
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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; //special state that initializes the process.
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void NewUnit; //special state that checks the NAL unit type.
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Bit#(5) CodedSlice; //decodes a type of NAL unit
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void SEI; //decodes a type of NAL unit
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Bit#(5) SPS; //decodes a type of NAL unit
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Bit#(5) PPS; //decodes a type of NAL unit
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void AUD; //decodes a type of NAL unit
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void EndSequence; //decodes a type of NAL unit
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void EndStream; //decodes a type of NAL unit
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void Filler; //decodes a type of NAL unit
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Bit#(5) SliceData; //decodes slice data (part of a CodedSlice NAL unit)
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Bit#(5) MacroblockLayer; //decodes macroblock layer (part of a CodedSlice NAL unit)
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Bit#(5) MbPrediction; //decodes macroblock prediction (part of a CodedSlice NAL unit)
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Bit#(5) SubMbPrediction; //decodes sub-macroblock prediction (part of a CodedSlice NAL unit)
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Bit#(5) ResidualBlock; //decodes residual block (part of a CodedSlice NAL unit)
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}
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State deriving(Eq,Bits);
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//-----------------------------------------------------------
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// Helper functions
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function MbType mbtype_convert( Bit#(5) in_mb_type, Bit#(4) in_slice_type );//converts mb_type syntax element to MbType type
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Bit#(5) tempmb = in_mb_type;
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if(in_slice_type == 2 || in_slice_type == 7)//I slice
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tempmb = in_mb_type+5;
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case ( tempmb )
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0: return P_L0_16x16;
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1: return P_L0_L0_16x8;
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2: return P_L0_L0_8x16;
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3: return P_8x8;
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4: return P_8x8ref0;
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5: return I_NxN;
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30: return I_PCM;
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default:
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begin
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Bit#(5) tempmb16x16 = tempmb-6;
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Bit#(2) tempv1 = tempmb16x16[1:0];
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Bit#(2) tempv2;
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Bit#(1) tempv3;
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if(tempmb16x16 < 12)
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begin
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tempv3 = 0;
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tempv2 = tempmb16x16[3:2];
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end
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else
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begin
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tempv3 = 1;
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tempv2 = tempmb16x16[3:2]+1;
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end
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return I_16x16{intra16x16PredMode:tempv1, codedBlockPatternChroma:tempv2, codedBlockPatternLuma:tempv3};
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end
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endcase
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endfunction
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//-----------------------------------------------------------
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// Entropy Decoder Module
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//-----------------------------------------------------------
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(* synthesize *)
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module mkEntropyDec( IEntropyDec );
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FIFO#(NalUnwrapOT) infifo <- mkSizedFIFO(entropyDec_infifo_size);
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FIFO#(EntropyDecOT) outfifo <- mkFIFO;
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FIFO#(EntropyDecOT_InverseTrans) outfifo_ITB <- mkFIFO;
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Reg#(State) state <- mkReg(Start);
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Reg#(Bit#(2)) nalrefidc <- mkReg(0);
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Reg#(Bit#(5)) nalunittype <- mkReg(0);
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Reg#(Buffer) buffer <- mkReg(0);
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Reg#(Bufcount) bufcount <- mkReg(0);
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//saved syntax elements
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Reg#(Bit#(5)) spsseq_parameter_set_id <- mkReg(0);
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Reg#(Bit#(5)) spslog2_max_frame_num <- mkReg(0);
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Reg#(Bit#(5)) spslog2_max_pic_order_cnt_lsb <- mkReg(0);
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Reg#(Bit#(2)) spspic_order_cnt_type <- mkReg(0);
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Reg#(Bit#(1)) spsdelta_pic_order_always_zero_flag <- mkReg(0);
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Reg#(Bit#(8)) spsnum_ref_frames_in_pic_order_cnt_cycle <- mkReg(0);
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Reg#(Bit#(8)) ppspic_parameter_set_id <- mkReg(0);
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Reg#(Bit#(1)) ppspic_order_present_flag <- mkReg(0);
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Reg#(Bit#(1)) ppsdeblocking_filter_control_present_flag <- mkReg(0);
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Reg#(Bit#(4)) shslice_type <- mkReg(0);
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Reg#(Bit#(3)) shdmemory_management_control_operation <- mkReg(0);
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Reg#(MbType) sdmmbtype <- mkReg(I_NxN);
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Reg#(Bit#(4)) sdmcodedBlockPatternLuma <- mkReg(0);
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Reg#(Bit#(2)) sdmcodedBlockPatternChroma <- mkReg(0);
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Reg#(Bit#(5)) sdmrTotalCoeff <- mkReg(0);
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Reg#(Bit#(2)) sdmrTrailingOnes <- mkReg(0);
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//derived decoding variables for slice data
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Reg#(Bit#(16)) tempreg <- mkReg(0);
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Reg#(Bit#(5)) num_ref_idx_l0_active_minus1 <- mkReg(0);
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Reg#(Bit#(PicAreaSz)) currMbAddr <- mkReg(0);
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Reg#(Bit#(3)) temp3bit0 <- mkReg(0);
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Reg#(Bit#(3)) temp3bit1 <- mkReg(0);
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Reg#(Bit#(3)) temp3bit2 <- mkReg(0);
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Reg#(Bit#(3)) temp3bit3 <- mkReg(0);
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Reg#(Bit#(5)) temp5bit <- mkReg(0);
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Reg#(Bit#(5)) temp5bit2 <- mkReg(0);
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Reg#(Bit#(5)) maxNumCoeff <- mkReg(0);
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FIFO#(Bit#(13)) cavlcFIFO <- mkSizedFIFO(16);
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Calc_nC calcnc <- mkCalc_nC();
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Reg#(Bit#(1)) residualChroma <- mkReg(0);
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Reg#(Bit#(5)) totalCoeff <- mkReg(0);
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Reg#(Bit#(4)) zerosLeft <- mkReg(0);
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//exp-golomb 32-bit version states
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Reg#(Bufcount) egnumbits <- mkReg(0);
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//extra-buffering states
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Reg#(Bit#(32)) extrabuffer <- mkReg(0);
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Reg#(Bit#(3)) extrabufcount <- mkReg(0);
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Reg#(Bit#(1)) extraendnalflag <- mkReg(0);
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Reg#(Bit#(1)) endnalflag <- mkReg(0);
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//-----------------------------------------------------------
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// Rules
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rule startup (state matches Start);
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case (infifo.first()) matches
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tagged NewUnit :
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begin
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infifo.deq();
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state <= NewUnit;
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buffer <= 0;
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bufcount <= 0;
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extrabuffer <= 0;
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extrabufcount <= 0;
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extraendnalflag <= 0;
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endnalflag <= 0;
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end
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tagged RbspByte .rdata :
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begin
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infifo.deq();
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end
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tagged EndOfFile :
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begin
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infifo.deq();
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outfifo.enq(EndOfFile);
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$display( "INFO EntropyDec: EndOfFile reached" );
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end
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endcase
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endrule
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rule newunit (state matches NewUnit);
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case (infifo.first()) matches
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tagged NewUnit : state <= Start;
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tagged RbspByte .rdata :
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begin
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infifo.deq();
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nalrefidc <= rdata[6:5];
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nalunittype <= rdata[4:0];
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case (rdata[4:0])
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1 : state <= tagged CodedSlice 0;
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5 : state <= tagged CodedSlice 0;
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6 : state <= SEI;
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7 : state <= tagged SPS 0;
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8 : state <= tagged PPS 0;
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9 : state <= AUD;
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10: state <= EndSequence;
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11: state <= EndStream;
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12: state <= Filler;
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default:
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begin
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$display( "ERROR EntropyDec: NAL Unit Type = %d", rdata[4:0] );
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state <= Start;
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end
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endcase
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$display("ccl2newunit");
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$display("ccl2rbspbyte %h", rdata);
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outfifo.enq(tagged NewUnit rdata);
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outfifo_ITB.enq(tagged NewUnit rdata);
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end
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tagged EndOfFile : state <= Start;
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endcase
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endrule
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rule fillextrabuffer (state != Start
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&& state != NewUnit
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&& extrabufcount < 4
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&& extraendnalflag == 0);
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if(infifo.first() matches tagged RbspByte .dbyte)
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begin
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case ( extrabufcount )
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0: extrabuffer <= {dbyte, extrabuffer[23:0]};
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1: extrabuffer <= {extrabuffer[31:24],dbyte,extrabuffer[15:0]};
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2: extrabuffer <= {extrabuffer[31:16],dbyte,extrabuffer[7:0]};
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3: extrabuffer <= {extrabuffer[31:8],dbyte};
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default: $display( "ERROR EntropyDec: fillextrabuffer default case_" );
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endcase
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extrabufcount <= extrabufcount + 1;
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infifo.deq();
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//$display( "TRACE EntropyDec: fillextrabuffer RbspByte %h %h %h", dbyte, extrabufcount, extrabuffer);
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end
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else
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begin
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if(extrabufcount != 0)
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extraendnalflag <= 1;
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//$display( "TRACE EntropyDec: fillextrabuffer else %h", extrabufcount);
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end
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endrule
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rule fillbuffer (state != Start
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&& state != NewUnit
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&& bufcount<=truncate(buffersize-32)
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&& (extrabufcount == 4 || extraendnalflag == 1)
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&& endnalflag == 0);//predicate not sure
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Buffer temp = zeroExtend(extrabuffer);
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Bufcount temp2 = truncate(buffersize)-bufcount-32;
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buffer <= (buffer | (temp << zeroExtend(temp2)));
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case ( extrabufcount )
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4: bufcount <= bufcount+32;
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3: bufcount <= bufcount+24;
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2: bufcount <= bufcount+16;
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1: bufcount <= bufcount+8;
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default: $display( "ERROR EntropyDec: fillbuffer default case" );
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endcase
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extrabuffer <= 0;
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extrabufcount <= 0;
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if(infifo.first()==NewUnit || infifo.first()==EndOfFile)
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endnalflag <= 1;
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//$display( "TRACE EntropyDec: fillbuffer RbspByte %h %h %h %h %h %h %h %h", extrabufcount, bufcount, extrabuffer, temp, temp2, (temp << zeroExtend(temp2)), buffer, (buffer | (temp << zeroExtend(temp2))));
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endrule
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rule parser (state != Start
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&&& state != NewUnit
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&&& (bufcount > truncate(buffersize-32) || endnalflag == 1));//predicate not sure
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//$display( "TRACE EntropyDec: fillbuffer RbspByte %h %h", bufcount, buffer );
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Bufcount numbitsused = 0;
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State nextstate = Start;
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Int#(16) tempint = 0;
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Int#(32) tempint32 = 0;
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case ( state ) matches
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tagged CodedSlice .step :
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begin
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case ( step )
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0:
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begin
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$display( "ccl2SHfirst_mb_in_slice %0d", expgolomb_unsigned(buffer) );
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outfifo.enq(tagged SHfirst_mb_in_slice truncate(expgolomb_unsigned(buffer)));
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currMbAddr <= truncate(expgolomb_unsigned(buffer));
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calcnc.initialize(truncate(expgolomb_unsigned(buffer)));
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numbitsused = expgolomb_numbits(buffer);
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nextstate = tagged CodedSlice 1;
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end
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1:
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begin
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$display( "ccl2SHslice_type %0d", expgolomb_unsigned(buffer) );
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outfifo.enq(tagged SHslice_type truncate(expgolomb_unsigned(buffer)));
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shslice_type <= truncate(expgolomb_unsigned(buffer));
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numbitsused = expgolomb_numbits(buffer);
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nextstate = tagged CodedSlice 2;
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end
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2:
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begin
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$display( "ccl2SHpic_parameter_set_id %0d", expgolomb_unsigned(buffer) );
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| 317 |
|
|
outfifo.enq(tagged SHpic_parameter_set_id truncate(expgolomb_unsigned(buffer)));
|
| 318 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 319 |
|
|
nextstate = tagged CodedSlice 3;
|
| 320 |
|
|
if(ppspic_parameter_set_id != truncate(expgolomb_unsigned(buffer))) $display( "ERROR EntropyDec: pic_parameter_set_id don't match" );
|
| 321 |
|
|
end
|
| 322 |
|
|
3:
|
| 323 |
|
|
begin
|
| 324 |
|
|
Bit#(16) tttt = buffer[buffersize-1:buffersize-16];
|
| 325 |
|
|
tttt = tttt >> 16 - zeroExtend(spslog2_max_frame_num);
|
| 326 |
|
|
$display( "ccl2SHframe_num %0d", tttt );
|
| 327 |
|
|
outfifo.enq(tagged SHframe_num tttt);
|
| 328 |
|
|
numbitsused = zeroExtend(spslog2_max_frame_num);
|
| 329 |
|
|
nextstate = tagged CodedSlice 4;
|
| 330 |
|
|
end
|
| 331 |
|
|
4:
|
| 332 |
|
|
begin
|
| 333 |
|
|
if(nalunittype == 5)
|
| 334 |
|
|
begin
|
| 335 |
|
|
$display( "ccl2SHidr_pic_id %0d", expgolomb_unsigned(buffer) );
|
| 336 |
|
|
outfifo.enq(tagged SHidr_pic_id truncate(expgolomb_unsigned(buffer)));
|
| 337 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 338 |
|
|
end
|
| 339 |
|
|
nextstate = tagged CodedSlice 5;
|
| 340 |
|
|
end
|
| 341 |
|
|
5:
|
| 342 |
|
|
begin
|
| 343 |
|
|
if(spspic_order_cnt_type == 0)
|
| 344 |
|
|
begin
|
| 345 |
|
|
Bit#(16) tttt = buffer[buffersize-1:buffersize-16];
|
| 346 |
|
|
tttt = tttt >> 16 - zeroExtend(spslog2_max_pic_order_cnt_lsb);
|
| 347 |
|
|
$display( "ccl2SHpic_order_cnt_lsb %0d", tttt );
|
| 348 |
|
|
outfifo.enq(tagged SHpic_order_cnt_lsb tttt);
|
| 349 |
|
|
numbitsused = zeroExtend(spslog2_max_pic_order_cnt_lsb);
|
| 350 |
|
|
nextstate = tagged CodedSlice 6;
|
| 351 |
|
|
end
|
| 352 |
|
|
else
|
| 353 |
|
|
nextstate = tagged CodedSlice 7;
|
| 354 |
|
|
end
|
| 355 |
|
|
6:
|
| 356 |
|
|
begin
|
| 357 |
|
|
if(ppspic_order_present_flag == 1)
|
| 358 |
|
|
begin
|
| 359 |
|
|
if(egnumbits == 0)
|
| 360 |
|
|
begin
|
| 361 |
|
|
Bufcount tempbufcount = expgolomb_numbits32(buffer);
|
| 362 |
|
|
egnumbits <= tempbufcount;
|
| 363 |
|
|
numbitsused = tempbufcount-1;
|
| 364 |
|
|
nextstate = tagged CodedSlice 6;
|
| 365 |
|
|
end
|
| 366 |
|
|
else
|
| 367 |
|
|
begin
|
| 368 |
|
|
tempint32 = unpack(expgolomb_signed32(buffer,egnumbits));
|
| 369 |
|
|
$display( "ccl2SHdelta_pic_order_cnt_bottom %0d", tempint32 );
|
| 370 |
|
|
outfifo.enq(tagged SHdelta_pic_order_cnt_bottom truncate(expgolomb_signed32(buffer,egnumbits)));
|
| 371 |
|
|
egnumbits <= 0;
|
| 372 |
|
|
numbitsused = egnumbits;
|
| 373 |
|
|
nextstate = tagged CodedSlice 7;
|
| 374 |
|
|
end
|
| 375 |
|
|
end
|
| 376 |
|
|
else
|
| 377 |
|
|
nextstate = tagged CodedSlice 7;
|
| 378 |
|
|
end
|
| 379 |
|
|
7:
|
| 380 |
|
|
begin
|
| 381 |
|
|
if(spspic_order_cnt_type == 1 && spsdelta_pic_order_always_zero_flag == 0)
|
| 382 |
|
|
begin
|
| 383 |
|
|
if(egnumbits == 0)
|
| 384 |
|
|
begin
|
| 385 |
|
|
Bufcount tempbufcount = expgolomb_numbits32(buffer);
|
| 386 |
|
|
egnumbits <= tempbufcount;
|
| 387 |
|
|
numbitsused = tempbufcount-1;
|
| 388 |
|
|
nextstate = tagged CodedSlice 7;
|
| 389 |
|
|
end
|
| 390 |
|
|
else
|
| 391 |
|
|
begin
|
| 392 |
|
|
tempint32 = unpack(expgolomb_signed32(buffer,egnumbits));
|
| 393 |
|
|
$display( "ccl2SHdelta_pic_order_cnt0 %0d", tempint32 );
|
| 394 |
|
|
outfifo.enq(tagged SHdelta_pic_order_cnt0 truncate(expgolomb_signed32(buffer,egnumbits)));
|
| 395 |
|
|
egnumbits <= 0;
|
| 396 |
|
|
numbitsused = egnumbits;
|
| 397 |
|
|
nextstate = tagged CodedSlice 8;
|
| 398 |
|
|
end
|
| 399 |
|
|
end
|
| 400 |
|
|
else
|
| 401 |
|
|
nextstate = tagged CodedSlice 9;
|
| 402 |
|
|
end
|
| 403 |
|
|
8:
|
| 404 |
|
|
begin
|
| 405 |
|
|
if(ppspic_order_present_flag == 1)
|
| 406 |
|
|
begin
|
| 407 |
|
|
if(egnumbits == 0)
|
| 408 |
|
|
begin
|
| 409 |
|
|
Bufcount tempbufcount = expgolomb_numbits32(buffer);
|
| 410 |
|
|
egnumbits <= tempbufcount;
|
| 411 |
|
|
numbitsused = tempbufcount-1;
|
| 412 |
|
|
nextstate = tagged CodedSlice 8;
|
| 413 |
|
|
end
|
| 414 |
|
|
else
|
| 415 |
|
|
begin
|
| 416 |
|
|
tempint32 = unpack(expgolomb_signed32(buffer,egnumbits));
|
| 417 |
|
|
$display( "ccl2SHdelta_pic_order_cnt1 %0d", tempint32 );
|
| 418 |
|
|
outfifo.enq(tagged SHdelta_pic_order_cnt1 truncate(expgolomb_signed32(buffer,egnumbits)));
|
| 419 |
|
|
egnumbits <= 0;
|
| 420 |
|
|
numbitsused = egnumbits;
|
| 421 |
|
|
nextstate = tagged CodedSlice 9;
|
| 422 |
|
|
end
|
| 423 |
|
|
end
|
| 424 |
|
|
else
|
| 425 |
|
|
nextstate = tagged CodedSlice 9;
|
| 426 |
|
|
end
|
| 427 |
|
|
9:
|
| 428 |
|
|
begin
|
| 429 |
|
|
if(shslice_type == 0 || shslice_type == 5)
|
| 430 |
|
|
begin
|
| 431 |
|
|
$display( "ccl2SHnum_ref_idx_active_override_flag %0d", buffer[buffersize-1] );
|
| 432 |
|
|
outfifo.enq(tagged SHnum_ref_idx_active_override_flag buffer[buffersize-1]);
|
| 433 |
|
|
numbitsused = 1;
|
| 434 |
|
|
if(buffer[buffersize-1] == 1)
|
| 435 |
|
|
nextstate = tagged CodedSlice 10;
|
| 436 |
|
|
else
|
| 437 |
|
|
nextstate = tagged CodedSlice 11;
|
| 438 |
|
|
end
|
| 439 |
|
|
else
|
| 440 |
|
|
nextstate = tagged CodedSlice 11;
|
| 441 |
|
|
end
|
| 442 |
|
|
10:
|
| 443 |
|
|
begin
|
| 444 |
|
|
$display( "ccl2SHnum_ref_idx_l0_active %0d", expgolomb_unsigned(buffer)+1 );
|
| 445 |
|
|
outfifo.enq(tagged SHnum_ref_idx_l0_active truncate(expgolomb_unsigned(buffer)+1));
|
| 446 |
|
|
num_ref_idx_l0_active_minus1 <= truncate(expgolomb_unsigned(buffer));
|
| 447 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 448 |
|
|
nextstate = tagged CodedSlice 11;
|
| 449 |
|
|
end
|
| 450 |
|
|
11:
|
| 451 |
|
|
begin
|
| 452 |
|
|
if(shslice_type != 2 && shslice_type != 7)
|
| 453 |
|
|
begin
|
| 454 |
|
|
$display( "ccl2SHRref_pic_list_reordering_flag_l0 %0d", buffer[buffersize-1] );
|
| 455 |
|
|
outfifo.enq(tagged SHRref_pic_list_reordering_flag_l0 buffer[buffersize-1]);
|
| 456 |
|
|
numbitsused = 1;
|
| 457 |
|
|
if(buffer[buffersize-1] == 1)
|
| 458 |
|
|
nextstate = tagged CodedSlice 12;
|
| 459 |
|
|
else
|
| 460 |
|
|
nextstate = tagged CodedSlice 15;
|
| 461 |
|
|
end
|
| 462 |
|
|
else
|
| 463 |
|
|
nextstate = tagged CodedSlice 15;
|
| 464 |
|
|
end
|
| 465 |
|
|
12:
|
| 466 |
|
|
begin
|
| 467 |
|
|
$display( "ccl2SHRreordering_of_pic_nums_idc %0d", expgolomb_unsigned(buffer) );
|
| 468 |
|
|
outfifo.enq(tagged SHRreordering_of_pic_nums_idc truncate(expgolomb_unsigned(buffer)));
|
| 469 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 470 |
|
|
if(expgolomb_unsigned(buffer)==0 || expgolomb_unsigned(buffer)==1)
|
| 471 |
|
|
nextstate = tagged CodedSlice 13;
|
| 472 |
|
|
else if(expgolomb_unsigned(buffer)==2)
|
| 473 |
|
|
nextstate = tagged CodedSlice 14;
|
| 474 |
|
|
else
|
| 475 |
|
|
nextstate = tagged CodedSlice 15;
|
| 476 |
|
|
end
|
| 477 |
|
|
13:
|
| 478 |
|
|
begin
|
| 479 |
|
|
Bit#(17) temp17 = zeroExtend(expgolomb_unsigned(buffer)) + 1;
|
| 480 |
|
|
$display( "ccl2SHRabs_diff_pic_num %0d", temp17 );
|
| 481 |
|
|
outfifo.enq(tagged SHRabs_diff_pic_num temp17);
|
| 482 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 483 |
|
|
nextstate = tagged CodedSlice 12;
|
| 484 |
|
|
end
|
| 485 |
|
|
14:
|
| 486 |
|
|
begin
|
| 487 |
|
|
$display( "ccl2SHRlong_term_pic_num %0d", expgolomb_unsigned(buffer) );
|
| 488 |
|
|
outfifo.enq(tagged SHRlong_term_pic_num truncate(expgolomb_unsigned(buffer)));
|
| 489 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 490 |
|
|
nextstate = tagged CodedSlice 12;
|
| 491 |
|
|
end
|
| 492 |
|
|
15:
|
| 493 |
|
|
begin
|
| 494 |
|
|
if(nalrefidc == 0)
|
| 495 |
|
|
nextstate = tagged CodedSlice 23;
|
| 496 |
|
|
else
|
| 497 |
|
|
begin
|
| 498 |
|
|
if(nalunittype == 5)
|
| 499 |
|
|
begin
|
| 500 |
|
|
$display( "ccl2SHDno_output_of_prior_pics_flag %0d", buffer[buffersize-1] );
|
| 501 |
|
|
outfifo.enq(tagged SHDno_output_of_prior_pics_flag buffer[buffersize-1]);
|
| 502 |
|
|
numbitsused = 1;
|
| 503 |
|
|
nextstate = tagged CodedSlice 16;
|
| 504 |
|
|
end
|
| 505 |
|
|
else
|
| 506 |
|
|
nextstate = tagged CodedSlice 17;
|
| 507 |
|
|
end
|
| 508 |
|
|
end
|
| 509 |
|
|
16:
|
| 510 |
|
|
begin
|
| 511 |
|
|
$display( "ccl2SHDlong_term_reference_flag %0d", buffer[buffersize-1] );
|
| 512 |
|
|
outfifo.enq(tagged SHDlong_term_reference_flag buffer[buffersize-1]);
|
| 513 |
|
|
numbitsused = 1;
|
| 514 |
|
|
nextstate = tagged CodedSlice 23;
|
| 515 |
|
|
end
|
| 516 |
|
|
17:
|
| 517 |
|
|
begin
|
| 518 |
|
|
$display( "ccl2SHDadaptive_ref_pic_marking_mode_flag %0d", buffer[buffersize-1] );
|
| 519 |
|
|
outfifo.enq(tagged SHDadaptive_ref_pic_marking_mode_flag buffer[buffersize-1]);
|
| 520 |
|
|
numbitsused = 1;
|
| 521 |
|
|
if(buffer[buffersize-1] == 1)
|
| 522 |
|
|
nextstate = tagged CodedSlice 18;
|
| 523 |
|
|
else
|
| 524 |
|
|
nextstate = tagged CodedSlice 23;
|
| 525 |
|
|
end
|
| 526 |
|
|
18:
|
| 527 |
|
|
begin
|
| 528 |
|
|
$display( "ccl2SHDmemory_management_control_operation %0d", expgolomb_unsigned(buffer) );
|
| 529 |
|
|
outfifo.enq(tagged SHDmemory_management_control_operation truncate(expgolomb_unsigned(buffer)));
|
| 530 |
|
|
shdmemory_management_control_operation <= truncate(expgolomb_unsigned(buffer));
|
| 531 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 532 |
|
|
if(expgolomb_unsigned(buffer)!=0)
|
| 533 |
|
|
nextstate = tagged CodedSlice 19;
|
| 534 |
|
|
else
|
| 535 |
|
|
nextstate = tagged CodedSlice 23;
|
| 536 |
|
|
end
|
| 537 |
|
|
19:
|
| 538 |
|
|
begin
|
| 539 |
|
|
if(shdmemory_management_control_operation==1 || shdmemory_management_control_operation==3)
|
| 540 |
|
|
begin
|
| 541 |
|
|
Bit#(17) temp17 = zeroExtend(expgolomb_unsigned(buffer)) + 1;
|
| 542 |
|
|
$display( "ccl2SHDdifference_of_pic_nums %0d", temp17 );
|
| 543 |
|
|
outfifo.enq(tagged SHDdifference_of_pic_nums temp17);
|
| 544 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 545 |
|
|
nextstate = tagged CodedSlice 20;
|
| 546 |
|
|
end
|
| 547 |
|
|
else
|
| 548 |
|
|
nextstate = tagged CodedSlice 20;
|
| 549 |
|
|
end
|
| 550 |
|
|
20:
|
| 551 |
|
|
begin
|
| 552 |
|
|
if(shdmemory_management_control_operation==2)
|
| 553 |
|
|
begin
|
| 554 |
|
|
$display( "ccl2SHDlong_term_pic_num %0d", expgolomb_unsigned(buffer) );
|
| 555 |
|
|
outfifo.enq(tagged SHDlong_term_pic_num truncate(expgolomb_unsigned(buffer)));
|
| 556 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 557 |
|
|
nextstate = tagged CodedSlice 21;
|
| 558 |
|
|
end
|
| 559 |
|
|
else
|
| 560 |
|
|
nextstate = tagged CodedSlice 21;
|
| 561 |
|
|
end
|
| 562 |
|
|
21:
|
| 563 |
|
|
begin
|
| 564 |
|
|
if(shdmemory_management_control_operation==3 || shdmemory_management_control_operation==6)
|
| 565 |
|
|
begin
|
| 566 |
|
|
$display( "ccl2SHDlong_term_frame_idx %0d", expgolomb_unsigned(buffer) );
|
| 567 |
|
|
outfifo.enq(tagged SHDlong_term_frame_idx truncate(expgolomb_unsigned(buffer)));
|
| 568 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 569 |
|
|
nextstate = tagged CodedSlice 22;
|
| 570 |
|
|
end
|
| 571 |
|
|
else
|
| 572 |
|
|
nextstate = tagged CodedSlice 22;
|
| 573 |
|
|
end
|
| 574 |
|
|
22:
|
| 575 |
|
|
begin
|
| 576 |
|
|
if(shdmemory_management_control_operation==4)
|
| 577 |
|
|
begin
|
| 578 |
|
|
$display( "ccl2SHDmax_long_term_frame_idx_plus1 %0d", expgolomb_unsigned(buffer) );
|
| 579 |
|
|
outfifo.enq(tagged SHDmax_long_term_frame_idx_plus1 truncate(expgolomb_unsigned(buffer)));
|
| 580 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 581 |
|
|
nextstate = tagged CodedSlice 18;
|
| 582 |
|
|
end
|
| 583 |
|
|
else
|
| 584 |
|
|
nextstate = tagged CodedSlice 18;
|
| 585 |
|
|
end
|
| 586 |
|
|
23:
|
| 587 |
|
|
begin
|
| 588 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 589 |
|
|
$display( "ccl2SHslice_qp_delta %0d", tempint );
|
| 590 |
|
|
outfifo_ITB.enq(tagged SHslice_qp_delta truncate(expgolomb_signed(buffer)));
|
| 591 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 592 |
|
|
nextstate = tagged CodedSlice 24;
|
| 593 |
|
|
end
|
| 594 |
|
|
24:
|
| 595 |
|
|
begin
|
| 596 |
|
|
if(ppsdeblocking_filter_control_present_flag==1)
|
| 597 |
|
|
begin
|
| 598 |
|
|
$display( "ccl2SHdisable_deblocking_filter_idc %0d", expgolomb_unsigned(buffer) );
|
| 599 |
|
|
outfifo.enq(tagged SHdisable_deblocking_filter_idc truncate(expgolomb_unsigned(buffer)));
|
| 600 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 601 |
|
|
if(expgolomb_unsigned(buffer)!=1)
|
| 602 |
|
|
nextstate = tagged CodedSlice 25;
|
| 603 |
|
|
else
|
| 604 |
|
|
nextstate = tagged CodedSlice 27;
|
| 605 |
|
|
end
|
| 606 |
|
|
else
|
| 607 |
|
|
nextstate = tagged CodedSlice 27;
|
| 608 |
|
|
end
|
| 609 |
|
|
25:
|
| 610 |
|
|
begin
|
| 611 |
|
|
tempint = unpack(expgolomb_signed(buffer) << 1);
|
| 612 |
|
|
$display( "ccl2SHslice_alpha_c0_offset %0d", tempint );
|
| 613 |
|
|
outfifo.enq(tagged SHslice_alpha_c0_offset truncate(expgolomb_signed(buffer) << 1));
|
| 614 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 615 |
|
|
nextstate = tagged CodedSlice 26;
|
| 616 |
|
|
end
|
| 617 |
|
|
26:
|
| 618 |
|
|
begin
|
| 619 |
|
|
tempint = unpack(expgolomb_signed(buffer) << 1);
|
| 620 |
|
|
$display( "ccl2SHslice_beta_offset %0d", tempint );
|
| 621 |
|
|
outfifo.enq(tagged SHslice_beta_offset truncate(expgolomb_signed(buffer) << 1));
|
| 622 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 623 |
|
|
nextstate = tagged CodedSlice 27;
|
| 624 |
|
|
end
|
| 625 |
|
|
27:
|
| 626 |
|
|
begin
|
| 627 |
|
|
nextstate = tagged SliceData 0;
|
| 628 |
|
|
end
|
| 629 |
|
|
default: $display( "ERROR EntropyDec: CodedSlice default step" );
|
| 630 |
|
|
endcase
|
| 631 |
|
|
end
|
| 632 |
|
|
tagged SEI .step :
|
| 633 |
|
|
begin
|
| 634 |
|
|
nextstate = Start;
|
| 635 |
|
|
$display( "INFO EntropyDec: SEI data thrown away" );
|
| 636 |
|
|
end
|
| 637 |
|
|
tagged SPS .step :
|
| 638 |
|
|
begin
|
| 639 |
|
|
case ( step )
|
| 640 |
|
|
0:
|
| 641 |
|
|
begin
|
| 642 |
|
|
Bit#(8) outputdata = buffer[buffersize-1:buffersize-8];
|
| 643 |
|
|
$display( "INFO EntropyDec: profile_idc = %d", outputdata );
|
| 644 |
|
|
outputdata = buffer[buffersize-9:buffersize-16];
|
| 645 |
|
|
$display( "INFO EntropyDec: constraint_set = %b", outputdata );
|
| 646 |
|
|
outputdata = buffer[buffersize-17:buffersize-24];
|
| 647 |
|
|
$display( "INFO EntropyDec: level_idc = %d", outputdata );
|
| 648 |
|
|
numbitsused = 24;
|
| 649 |
|
|
nextstate = tagged SPS 1;
|
| 650 |
|
|
end
|
| 651 |
|
|
1:
|
| 652 |
|
|
begin
|
| 653 |
|
|
$display( "ccl2SPSseq_parameter_set_id %0d", expgolomb_unsigned(buffer) );
|
| 654 |
|
|
outfifo.enq(tagged SPSseq_parameter_set_id truncate(expgolomb_unsigned(buffer)));
|
| 655 |
|
|
spsseq_parameter_set_id <= truncate(expgolomb_unsigned(buffer));
|
| 656 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 657 |
|
|
nextstate = tagged SPS 2;
|
| 658 |
|
|
end
|
| 659 |
|
|
2:
|
| 660 |
|
|
begin
|
| 661 |
|
|
$display( "ccl2SPSlog2_max_frame_num %0d", expgolomb_unsigned(buffer)+4 );
|
| 662 |
|
|
outfifo.enq(tagged SPSlog2_max_frame_num truncate(expgolomb_unsigned(buffer)+4));
|
| 663 |
|
|
spslog2_max_frame_num <= truncate(expgolomb_unsigned(buffer)+4);
|
| 664 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 665 |
|
|
nextstate = tagged SPS 3;
|
| 666 |
|
|
end
|
| 667 |
|
|
3:
|
| 668 |
|
|
begin
|
| 669 |
|
|
let tttt = expgolomb_unsigned(buffer);
|
| 670 |
|
|
$display( "ccl2SPSpic_order_cnt_type %0d", tttt );
|
| 671 |
|
|
outfifo.enq(tagged SPSpic_order_cnt_type truncate(tttt));
|
| 672 |
|
|
spspic_order_cnt_type <= truncate(tttt);
|
| 673 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 674 |
|
|
if(tttt == 0)
|
| 675 |
|
|
nextstate = tagged SPS 4;
|
| 676 |
|
|
else if(tttt == 1)
|
| 677 |
|
|
nextstate = tagged SPS 5;
|
| 678 |
|
|
else
|
| 679 |
|
|
nextstate = tagged SPS 10;
|
| 680 |
|
|
end
|
| 681 |
|
|
4:
|
| 682 |
|
|
begin
|
| 683 |
|
|
$display( "ccl2SPSlog2_max_pic_order_cnt_lsb %0d", expgolomb_unsigned(buffer)+4 );
|
| 684 |
|
|
outfifo.enq(tagged SPSlog2_max_pic_order_cnt_lsb truncate(expgolomb_unsigned(buffer)+4));
|
| 685 |
|
|
spslog2_max_pic_order_cnt_lsb <= truncate(expgolomb_unsigned(buffer)+4);
|
| 686 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 687 |
|
|
nextstate = tagged SPS 10;
|
| 688 |
|
|
end
|
| 689 |
|
|
5:
|
| 690 |
|
|
begin
|
| 691 |
|
|
$display( "ccl2SPSdelta_pic_order_always_zero_flag %0d", buffer[buffersize-1] );
|
| 692 |
|
|
outfifo.enq(tagged SPSdelta_pic_order_always_zero_flag buffer[buffersize-1]);
|
| 693 |
|
|
spsdelta_pic_order_always_zero_flag <= buffer[buffersize-1];
|
| 694 |
|
|
numbitsused = 1;
|
| 695 |
|
|
nextstate = tagged SPS 6;
|
| 696 |
|
|
end
|
| 697 |
|
|
6:
|
| 698 |
|
|
begin
|
| 699 |
|
|
if(egnumbits == 0)
|
| 700 |
|
|
begin
|
| 701 |
|
|
Bufcount tempbufcount = expgolomb_numbits32(buffer);
|
| 702 |
|
|
egnumbits <= tempbufcount;
|
| 703 |
|
|
numbitsused = tempbufcount-1;
|
| 704 |
|
|
nextstate = tagged SPS 6;
|
| 705 |
|
|
end
|
| 706 |
|
|
else
|
| 707 |
|
|
begin
|
| 708 |
|
|
tempint32 = unpack(expgolomb_signed32(buffer,egnumbits));
|
| 709 |
|
|
$display( "ccl2SPSoffset_for_non_ref_pic %0d", tempint32 );
|
| 710 |
|
|
outfifo.enq(tagged SPSoffset_for_non_ref_pic truncate(expgolomb_signed32(buffer,egnumbits)));
|
| 711 |
|
|
egnumbits <= 0;
|
| 712 |
|
|
numbitsused = egnumbits;
|
| 713 |
|
|
nextstate = tagged SPS 7;
|
| 714 |
|
|
end
|
| 715 |
|
|
end
|
| 716 |
|
|
7:
|
| 717 |
|
|
begin
|
| 718 |
|
|
if(egnumbits == 0)
|
| 719 |
|
|
begin
|
| 720 |
|
|
Bufcount tempbufcount = expgolomb_numbits32(buffer);
|
| 721 |
|
|
egnumbits <= tempbufcount;
|
| 722 |
|
|
numbitsused = tempbufcount-1;
|
| 723 |
|
|
nextstate = tagged SPS 7;
|
| 724 |
|
|
end
|
| 725 |
|
|
else
|
| 726 |
|
|
begin
|
| 727 |
|
|
tempint32 = unpack(expgolomb_signed32(buffer,egnumbits));
|
| 728 |
|
|
$display( "ccl2SPSoffset_for_top_to_bottom_field %0d", tempint32 );
|
| 729 |
|
|
outfifo.enq(tagged SPSoffset_for_top_to_bottom_field truncate(expgolomb_signed32(buffer,egnumbits)));
|
| 730 |
|
|
egnumbits <= 0;
|
| 731 |
|
|
numbitsused = egnumbits;
|
| 732 |
|
|
nextstate = tagged SPS 8;
|
| 733 |
|
|
end
|
| 734 |
|
|
end
|
| 735 |
|
|
8:
|
| 736 |
|
|
begin
|
| 737 |
|
|
$display( "ccl2SPSnum_ref_frames_in_pic_order_cnt_cycle %0d", expgolomb_unsigned(buffer) );
|
| 738 |
|
|
outfifo.enq(tagged SPSnum_ref_frames_in_pic_order_cnt_cycle truncate(expgolomb_unsigned(buffer)));
|
| 739 |
|
|
spsnum_ref_frames_in_pic_order_cnt_cycle <= truncate(expgolomb_unsigned(buffer));
|
| 740 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 741 |
|
|
nextstate = tagged SPS 9;
|
| 742 |
|
|
end
|
| 743 |
|
|
9:
|
| 744 |
|
|
begin
|
| 745 |
|
|
if(spsnum_ref_frames_in_pic_order_cnt_cycle == 0)
|
| 746 |
|
|
nextstate = tagged SPS 10;
|
| 747 |
|
|
else
|
| 748 |
|
|
begin
|
| 749 |
|
|
if(egnumbits == 0)
|
| 750 |
|
|
begin
|
| 751 |
|
|
Bufcount tempbufcount = expgolomb_numbits32(buffer);
|
| 752 |
|
|
egnumbits <= tempbufcount;
|
| 753 |
|
|
numbitsused = tempbufcount-1;
|
| 754 |
|
|
nextstate = tagged SPS 9;
|
| 755 |
|
|
end
|
| 756 |
|
|
else
|
| 757 |
|
|
begin
|
| 758 |
|
|
tempint32 = unpack(expgolomb_signed32(buffer,egnumbits));
|
| 759 |
|
|
$display( "ccl2SPSoffset_for_ref_frame %0d", tempint32 );
|
| 760 |
|
|
outfifo.enq(tagged SPSoffset_for_ref_frame truncate(expgolomb_signed32(buffer,egnumbits)));
|
| 761 |
|
|
egnumbits <= 0;
|
| 762 |
|
|
spsnum_ref_frames_in_pic_order_cnt_cycle <= spsnum_ref_frames_in_pic_order_cnt_cycle - 1;
|
| 763 |
|
|
numbitsused = egnumbits;
|
| 764 |
|
|
nextstate = tagged SPS 9;
|
| 765 |
|
|
end
|
| 766 |
|
|
end
|
| 767 |
|
|
end
|
| 768 |
|
|
10:
|
| 769 |
|
|
begin
|
| 770 |
|
|
$display( "ccl2SPSnum_ref_frames %0d", expgolomb_unsigned(buffer) );
|
| 771 |
|
|
outfifo.enq(tagged SPSnum_ref_frames truncate(expgolomb_unsigned(buffer)));
|
| 772 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 773 |
|
|
nextstate = tagged SPS 11;
|
| 774 |
|
|
end
|
| 775 |
|
|
11:
|
| 776 |
|
|
begin
|
| 777 |
|
|
$display( "ccl2SPSgaps_in_frame_num_allowed_flag %0d", buffer[buffersize-1] );
|
| 778 |
|
|
outfifo.enq(tagged SPSgaps_in_frame_num_allowed_flag buffer[buffersize-1]);
|
| 779 |
|
|
numbitsused = 1;
|
| 780 |
|
|
nextstate = tagged SPS 12;
|
| 781 |
|
|
end
|
| 782 |
|
|
12:
|
| 783 |
|
|
begin
|
| 784 |
|
|
$display( "ccl2SPSpic_width_in_mbs %0d", expgolomb_unsigned(buffer)+1 );
|
| 785 |
|
|
outfifo.enq(tagged SPSpic_width_in_mbs truncate(expgolomb_unsigned(buffer)+1));
|
| 786 |
|
|
calcnc.initialize_picWidth(truncate(expgolomb_unsigned(buffer)+1));
|
| 787 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 788 |
|
|
nextstate = tagged SPS 13;
|
| 789 |
|
|
end
|
| 790 |
|
|
13:
|
| 791 |
|
|
begin
|
| 792 |
|
|
$display( "ccl2SPSpic_height_in_map_units %0d", expgolomb_unsigned(buffer)+1 );
|
| 793 |
|
|
outfifo.enq(tagged SPSpic_height_in_map_units truncate(expgolomb_unsigned(buffer)+1));
|
| 794 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 795 |
|
|
nextstate = tagged SPS 14;
|
| 796 |
|
|
end
|
| 797 |
|
|
14:
|
| 798 |
|
|
begin
|
| 799 |
|
|
//SPSframe_mbs_only_flag = 1 for baseline
|
| 800 |
|
|
numbitsused = 1;
|
| 801 |
|
|
nextstate = tagged SPS 15;
|
| 802 |
|
|
end
|
| 803 |
|
|
15:
|
| 804 |
|
|
begin
|
| 805 |
|
|
$display( "ccl2SPSdirect_8x8_inference_flag %0d", buffer[buffersize-1] );
|
| 806 |
|
|
outfifo.enq(tagged SPSdirect_8x8_inference_flag buffer[buffersize-1]);
|
| 807 |
|
|
numbitsused = 1;
|
| 808 |
|
|
nextstate = tagged SPS 16;
|
| 809 |
|
|
end
|
| 810 |
|
|
16:
|
| 811 |
|
|
begin
|
| 812 |
|
|
$display( "ccl2SPSframe_cropping_flag %0d", buffer[buffersize-1] );
|
| 813 |
|
|
outfifo.enq(tagged SPSframe_cropping_flag buffer[buffersize-1]);
|
| 814 |
|
|
numbitsused = 1;
|
| 815 |
|
|
if(buffer[buffersize-1] == 1)
|
| 816 |
|
|
nextstate = tagged SPS 17;
|
| 817 |
|
|
else
|
| 818 |
|
|
nextstate = tagged SPS 21;
|
| 819 |
|
|
end
|
| 820 |
|
|
17:
|
| 821 |
|
|
begin
|
| 822 |
|
|
$display( "ccl2SPSframe_crop_left_offset %0d", expgolomb_unsigned(buffer) );
|
| 823 |
|
|
outfifo.enq(tagged SPSframe_crop_left_offset truncate(expgolomb_unsigned(buffer)));
|
| 824 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 825 |
|
|
nextstate = tagged SPS 18;
|
| 826 |
|
|
end
|
| 827 |
|
|
18:
|
| 828 |
|
|
begin
|
| 829 |
|
|
$display( "ccl2SPSframe_crop_right_offset %0d", expgolomb_unsigned(buffer) );
|
| 830 |
|
|
outfifo.enq(tagged SPSframe_crop_right_offset truncate(expgolomb_unsigned(buffer)));
|
| 831 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 832 |
|
|
nextstate = tagged SPS 19;
|
| 833 |
|
|
end
|
| 834 |
|
|
19:
|
| 835 |
|
|
begin
|
| 836 |
|
|
$display( "ccl2SPSframe_crop_top_offset %0d", expgolomb_unsigned(buffer) );
|
| 837 |
|
|
outfifo.enq(tagged SPSframe_crop_top_offset truncate(expgolomb_unsigned(buffer)));
|
| 838 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 839 |
|
|
nextstate = tagged SPS 20;
|
| 840 |
|
|
end
|
| 841 |
|
|
20:
|
| 842 |
|
|
begin
|
| 843 |
|
|
$display( "ccl2SPSframe_crop_bottom_offset %0d", expgolomb_unsigned(buffer) );
|
| 844 |
|
|
outfifo.enq(tagged SPSframe_crop_bottom_offset truncate(expgolomb_unsigned(buffer)));
|
| 845 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 846 |
|
|
nextstate = tagged SPS 21;
|
| 847 |
|
|
end
|
| 848 |
|
|
21:
|
| 849 |
|
|
begin
|
| 850 |
|
|
nextstate = Start;
|
| 851 |
|
|
$display( "INFO EntropyDec:VUI data thrown away" );
|
| 852 |
|
|
end
|
| 853 |
|
|
default: $display( "ERROR EntropyDec: SPS default step" );
|
| 854 |
|
|
endcase
|
| 855 |
|
|
end
|
| 856 |
|
|
tagged PPS .step :
|
| 857 |
|
|
begin
|
| 858 |
|
|
case ( step )
|
| 859 |
|
|
0:
|
| 860 |
|
|
begin
|
| 861 |
|
|
ppspic_parameter_set_id <= truncate(expgolomb_unsigned(buffer));
|
| 862 |
|
|
$display( "ccl2PPSpic_parameter_set_id %0d", expgolomb_unsigned(buffer) );
|
| 863 |
|
|
outfifo.enq(tagged PPSpic_parameter_set_id truncate(expgolomb_unsigned(buffer)));
|
| 864 |
|
|
outfifo_ITB.enq(tagged PPSpic_parameter_set_id truncate(expgolomb_unsigned(buffer)));
|
| 865 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 866 |
|
|
nextstate = tagged PPS 1;
|
| 867 |
|
|
end
|
| 868 |
|
|
1:
|
| 869 |
|
|
begin
|
| 870 |
|
|
$display( "ccl2PPSseq_parameter_set_id %0d", expgolomb_unsigned(buffer) );
|
| 871 |
|
|
outfifo.enq(tagged PPSseq_parameter_set_id truncate(expgolomb_unsigned(buffer)));
|
| 872 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 873 |
|
|
nextstate = tagged PPS 2;
|
| 874 |
|
|
if(spsseq_parameter_set_id != truncate(expgolomb_unsigned(buffer)))
|
| 875 |
|
|
$display( "ERROR EntropyDec: seq_parameter_set_id don't match" );
|
| 876 |
|
|
end
|
| 877 |
|
|
2:
|
| 878 |
|
|
begin
|
| 879 |
|
|
//PPSentropy_coding_mode_flag = 0 for baseline
|
| 880 |
|
|
numbitsused = 1;
|
| 881 |
|
|
nextstate = tagged PPS 3;
|
| 882 |
|
|
end
|
| 883 |
|
|
3:
|
| 884 |
|
|
begin
|
| 885 |
|
|
ppspic_order_present_flag <= buffer[buffersize-1];
|
| 886 |
|
|
$display( "ccl2PPSpic_order_present_flag %0d", buffer[buffersize-1] );
|
| 887 |
|
|
outfifo.enq(tagged PPSpic_order_present_flag buffer[buffersize-1]);
|
| 888 |
|
|
numbitsused = 1;
|
| 889 |
|
|
nextstate = tagged PPS 4;
|
| 890 |
|
|
end
|
| 891 |
|
|
4:
|
| 892 |
|
|
begin
|
| 893 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 894 |
|
|
nextstate = tagged PPS 5;
|
| 895 |
|
|
if(expgolomb_unsigned(buffer)+1 != 1)
|
| 896 |
|
|
$display( "ERROR EntropyDec: PPSnum_slice_groups not equal to 1" );//=1 for main
|
| 897 |
|
|
end
|
| 898 |
|
|
5:
|
| 899 |
|
|
begin
|
| 900 |
|
|
$display( "ccl2PPSnum_ref_idx_l0_active %0d", expgolomb_unsigned(buffer)+1 );
|
| 901 |
|
|
outfifo.enq(tagged PPSnum_ref_idx_l0_active truncate(expgolomb_unsigned(buffer)+1));
|
| 902 |
|
|
num_ref_idx_l0_active_minus1 <= truncate(expgolomb_unsigned(buffer));
|
| 903 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 904 |
|
|
nextstate = tagged PPS 6;
|
| 905 |
|
|
end
|
| 906 |
|
|
6:
|
| 907 |
|
|
begin
|
| 908 |
|
|
$display( "ccl2PPSnum_ref_idx_l1_active %0d", expgolomb_unsigned(buffer)+1 );
|
| 909 |
|
|
outfifo.enq(tagged PPSnum_ref_idx_l1_active truncate(expgolomb_unsigned(buffer)+1));
|
| 910 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 911 |
|
|
nextstate = tagged PPS 7;
|
| 912 |
|
|
end
|
| 913 |
|
|
7:
|
| 914 |
|
|
begin
|
| 915 |
|
|
//PPSweighted_pred_flag = 0 for baseline; PPSweighted_bipred_idc = 0 for baseline
|
| 916 |
|
|
numbitsused = 3;
|
| 917 |
|
|
nextstate = tagged PPS 8;
|
| 918 |
|
|
end
|
| 919 |
|
|
8:
|
| 920 |
|
|
begin
|
| 921 |
|
|
$display( "ccl2PPSpic_init_qp %0d", expgolomb_signed(buffer)+26 );
|
| 922 |
|
|
outfifo_ITB.enq(tagged PPSpic_init_qp truncate(expgolomb_signed(buffer)+26));
|
| 923 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 924 |
|
|
nextstate = tagged PPS 9;
|
| 925 |
|
|
end
|
| 926 |
|
|
9:
|
| 927 |
|
|
begin
|
| 928 |
|
|
$display( "ccl2PPSpic_init_qs %0d", expgolomb_signed(buffer)+26 );
|
| 929 |
|
|
outfifo_ITB.enq(tagged PPSpic_init_qs truncate(expgolomb_signed(buffer)+26));
|
| 930 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 931 |
|
|
nextstate = tagged PPS 10;
|
| 932 |
|
|
end
|
| 933 |
|
|
10:
|
| 934 |
|
|
begin
|
| 935 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 936 |
|
|
$display( "ccl2PPSchroma_qp_index_offset %0d", tempint );
|
| 937 |
|
|
outfifo_ITB.enq(tagged PPSchroma_qp_index_offset truncate(expgolomb_signed(buffer)));
|
| 938 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 939 |
|
|
nextstate = tagged PPS 11;
|
| 940 |
|
|
end
|
| 941 |
|
|
11:
|
| 942 |
|
|
begin
|
| 943 |
|
|
ppsdeblocking_filter_control_present_flag <= buffer[buffersize-1];
|
| 944 |
|
|
$display( "ccl2PPSdeblocking_filter_control_present_flag %0d", buffer[buffersize-1] );
|
| 945 |
|
|
outfifo.enq(tagged PPSdeblocking_filter_control_present_flag buffer[buffersize-1]);
|
| 946 |
|
|
numbitsused = 1;
|
| 947 |
|
|
nextstate = tagged PPS 12;
|
| 948 |
|
|
end
|
| 949 |
|
|
12:
|
| 950 |
|
|
begin
|
| 951 |
|
|
$display( "ccl2PPSconstrained_intra_pred_flag %0d", buffer[buffersize-1] );
|
| 952 |
|
|
outfifo.enq(tagged PPSconstrained_intra_pred_flag buffer[buffersize-1]);
|
| 953 |
|
|
numbitsused = 1;
|
| 954 |
|
|
nextstate = tagged PPS 13;
|
| 955 |
|
|
end
|
| 956 |
|
|
13:
|
| 957 |
|
|
begin
|
| 958 |
|
|
//PPSredundant_pic_cnt_present_flag = 0 for main
|
| 959 |
|
|
numbitsused = 1;
|
| 960 |
|
|
nextstate = tagged PPS 14;
|
| 961 |
|
|
if(buffer[buffersize-1] != 0)
|
| 962 |
|
|
$display( "ERROR EntropyDec: PPSredundant_pic_cnt_present_flag not equal to 0" );//=0 for main
|
| 963 |
|
|
end
|
| 964 |
|
|
14:
|
| 965 |
|
|
begin
|
| 966 |
|
|
nextstate = Start;
|
| 967 |
|
|
end
|
| 968 |
|
|
default: $display( "ERROR EntropyDec: PPS default step" );
|
| 969 |
|
|
endcase
|
| 970 |
|
|
end
|
| 971 |
|
|
tagged AUD .step :
|
| 972 |
|
|
begin
|
| 973 |
|
|
outfifo.enq(tagged AUDPrimaryPicType buffer[buffersize-1:buffersize-3]);
|
| 974 |
|
|
numbitsused = 3;
|
| 975 |
|
|
nextstate = Start;
|
| 976 |
|
|
end
|
| 977 |
|
|
tagged EndSequence :
|
| 978 |
|
|
begin
|
| 979 |
|
|
outfifo.enq(tagged EndOfSequence);
|
| 980 |
|
|
nextstate = Start;
|
| 981 |
|
|
end
|
| 982 |
|
|
tagged EndStream :
|
| 983 |
|
|
begin
|
| 984 |
|
|
outfifo.enq(tagged EndOfStream);
|
| 985 |
|
|
nextstate = Start;
|
| 986 |
|
|
end
|
| 987 |
|
|
tagged Filler :
|
| 988 |
|
|
begin
|
| 989 |
|
|
nextstate = Start;
|
| 990 |
|
|
end
|
| 991 |
|
|
tagged SliceData .step :
|
| 992 |
|
|
begin
|
| 993 |
|
|
case ( step )
|
| 994 |
|
|
0:
|
| 995 |
|
|
begin
|
| 996 |
|
|
if( shslice_type!=2 && shslice_type!=7 )
|
| 997 |
|
|
begin
|
| 998 |
|
|
$display( "ccl2SDmb_skip_run %0d", expgolomb_unsigned(buffer) );
|
| 999 |
|
|
outfifo.enq(tagged SDmb_skip_run truncate(expgolomb_unsigned(buffer)));
|
| 1000 |
|
|
tempreg <= truncate(expgolomb_unsigned(buffer));
|
| 1001 |
|
|
calcnc.nNupdate_pskip( truncate(expgolomb_unsigned(buffer)) );
|
| 1002 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1003 |
|
|
nextstate = tagged SliceData 1;
|
| 1004 |
|
|
end
|
| 1005 |
|
|
else
|
| 1006 |
|
|
nextstate = tagged SliceData 2;
|
| 1007 |
|
|
end
|
| 1008 |
|
|
1:
|
| 1009 |
|
|
begin
|
| 1010 |
|
|
if( tempreg>0 )
|
| 1011 |
|
|
begin
|
| 1012 |
|
|
currMbAddr <= currMbAddr+1;//only because input assumed to comform to both baseline and main
|
| 1013 |
|
|
tempreg <= tempreg-1;
|
| 1014 |
|
|
nextstate = tagged SliceData 1;
|
| 1015 |
|
|
end
|
| 1016 |
|
|
else
|
| 1017 |
|
|
begin
|
| 1018 |
|
|
////$display( "ccl2SDcurrMbAddr %0d", currMbAddr );
|
| 1019 |
|
|
////outfifo.enq(SDcurrMbAddr currMbAddr);
|
| 1020 |
|
|
nextstate = tagged SliceData 2;
|
| 1021 |
|
|
end
|
| 1022 |
|
|
end
|
| 1023 |
|
|
2:
|
| 1024 |
|
|
begin
|
| 1025 |
|
|
if( bufcount>8 || buffer[buffersize-1]!=1 || (buffer<<1)!=0 )
|
| 1026 |
|
|
begin
|
| 1027 |
|
|
calcnc.loadMb(currMbAddr);
|
| 1028 |
|
|
nextstate = tagged MacroblockLayer 0;
|
| 1029 |
|
|
end
|
| 1030 |
|
|
else
|
| 1031 |
|
|
nextstate = tagged SliceData 3;
|
| 1032 |
|
|
end
|
| 1033 |
|
|
3:
|
| 1034 |
|
|
begin
|
| 1035 |
|
|
currMbAddr <= currMbAddr+1;//only because input assumed to comform to both baseline and main
|
| 1036 |
|
|
if( bufcount>8 || buffer[buffersize-1]!=1 || (buffer<<1)!=0 )
|
| 1037 |
|
|
nextstate = tagged SliceData 0;
|
| 1038 |
|
|
else
|
| 1039 |
|
|
nextstate = Start;
|
| 1040 |
|
|
end
|
| 1041 |
|
|
default: $display( "ERROR EntropyDec: SliceData default step" );
|
| 1042 |
|
|
endcase
|
| 1043 |
|
|
end
|
| 1044 |
|
|
tagged MacroblockLayer .step : //return to SliceData 3
|
| 1045 |
|
|
begin
|
| 1046 |
|
|
case ( step )
|
| 1047 |
|
|
0:
|
| 1048 |
|
|
begin
|
| 1049 |
|
|
$display( "ccl2SDMmb_type %0d", expgolomb_unsigned(buffer) );
|
| 1050 |
|
|
outfifo.enq(tagged SDMmbtype mbtype_convert(truncate(expgolomb_unsigned(buffer)), shslice_type) );
|
| 1051 |
|
|
outfifo_ITB.enq(tagged SDMmbtype mbtype_convert(truncate(expgolomb_unsigned(buffer)), shslice_type) );
|
| 1052 |
|
|
sdmmbtype <= mbtype_convert(truncate(expgolomb_unsigned(buffer)), shslice_type);
|
| 1053 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1054 |
|
|
if(mbtype_convert(truncate(expgolomb_unsigned(buffer)), shslice_type) == I_PCM)
|
| 1055 |
|
|
begin
|
| 1056 |
|
|
calcnc.nNupdate_ipcm();
|
| 1057 |
|
|
nextstate = tagged MacroblockLayer 1;
|
| 1058 |
|
|
end
|
| 1059 |
|
|
else
|
| 1060 |
|
|
nextstate = tagged MacroblockLayer 4;
|
| 1061 |
|
|
end
|
| 1062 |
|
|
1:
|
| 1063 |
|
|
begin
|
| 1064 |
|
|
tempreg <= 256;
|
| 1065 |
|
|
numbitsused = zeroExtend(bufcount[2:0]);
|
| 1066 |
|
|
nextstate = tagged MacroblockLayer 2;
|
| 1067 |
|
|
end
|
| 1068 |
|
|
2:
|
| 1069 |
|
|
begin
|
| 1070 |
|
|
if( tempreg>0 )
|
| 1071 |
|
|
begin
|
| 1072 |
|
|
Bit#(8) outputdata = buffer[buffersize-1:buffersize-8];
|
| 1073 |
|
|
$display( "ccl2SDMpcm_sample_luma %0d", outputdata );
|
| 1074 |
|
|
outfifo.enq(tagged SDMpcm_sample_luma outputdata);
|
| 1075 |
|
|
tempreg <= tempreg-1;
|
| 1076 |
|
|
numbitsused = 8;
|
| 1077 |
|
|
nextstate = tagged MacroblockLayer 2;
|
| 1078 |
|
|
end
|
| 1079 |
|
|
else
|
| 1080 |
|
|
begin
|
| 1081 |
|
|
tempreg <= 128;
|
| 1082 |
|
|
nextstate = tagged MacroblockLayer 3;
|
| 1083 |
|
|
end
|
| 1084 |
|
|
end
|
| 1085 |
|
|
3:
|
| 1086 |
|
|
begin
|
| 1087 |
|
|
if( tempreg>0 )
|
| 1088 |
|
|
begin
|
| 1089 |
|
|
Bit#(8) outputdata = buffer[buffersize-1:buffersize-8];
|
| 1090 |
|
|
$display( "ccl2SDMpcm_sample_chroma %0d", outputdata );
|
| 1091 |
|
|
outfifo.enq(tagged SDMpcm_sample_chroma outputdata);
|
| 1092 |
|
|
tempreg <= tempreg-1;
|
| 1093 |
|
|
numbitsused = 8;
|
| 1094 |
|
|
nextstate = tagged MacroblockLayer 3;
|
| 1095 |
|
|
end
|
| 1096 |
|
|
else
|
| 1097 |
|
|
nextstate = tagged SliceData 3;
|
| 1098 |
|
|
end
|
| 1099 |
|
|
4:
|
| 1100 |
|
|
begin
|
| 1101 |
|
|
if(sdmmbtype != I_NxN
|
| 1102 |
|
|
&&& mbPartPredMode(sdmmbtype,0) != Intra_16x16
|
| 1103 |
|
|
&&& numMbPart(sdmmbtype) == 4)
|
| 1104 |
|
|
nextstate = tagged SubMbPrediction 0;
|
| 1105 |
|
|
else
|
| 1106 |
|
|
nextstate = tagged MbPrediction 0;
|
| 1107 |
|
|
end
|
| 1108 |
|
|
5:
|
| 1109 |
|
|
begin
|
| 1110 |
|
|
if(mbPartPredMode(sdmmbtype,0) != Intra_16x16)
|
| 1111 |
|
|
begin
|
| 1112 |
|
|
$display( "ccl2SDMcoded_block_pattern %0d", expgolomb_coded_block_pattern(buffer,sdmmbtype) );
|
| 1113 |
|
|
////outfifo.enq(SDMcoded_block_pattern expgolomb_coded_block_pattern(buffer,sdmmbtype));
|
| 1114 |
|
|
sdmcodedBlockPatternLuma <= expgolomb_coded_block_pattern(buffer,sdmmbtype)[3:0];
|
| 1115 |
|
|
sdmcodedBlockPatternChroma <= expgolomb_coded_block_pattern(buffer,sdmmbtype)[5:4];
|
| 1116 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1117 |
|
|
end
|
| 1118 |
|
|
else
|
| 1119 |
|
|
begin
|
| 1120 |
|
|
if(sdmmbtype matches tagged I_16x16 {intra16x16PredMode:.tempv1, codedBlockPatternChroma:.tempv2, codedBlockPatternLuma:.tempv3})
|
| 1121 |
|
|
begin
|
| 1122 |
|
|
sdmcodedBlockPatternLuma <= {tempv3,tempv3,tempv3,tempv3};
|
| 1123 |
|
|
sdmcodedBlockPatternChroma <= tempv2;
|
| 1124 |
|
|
end
|
| 1125 |
|
|
else
|
| 1126 |
|
|
$display( "ERROR EntropyDec: MacroblockLayer 5 sdmmbtype not I_16x16" );
|
| 1127 |
|
|
end
|
| 1128 |
|
|
nextstate = tagged MacroblockLayer 6;
|
| 1129 |
|
|
end
|
| 1130 |
|
|
6:
|
| 1131 |
|
|
begin
|
| 1132 |
|
|
if(sdmcodedBlockPatternLuma > 0
|
| 1133 |
|
|
|| sdmcodedBlockPatternChroma > 0
|
| 1134 |
|
|
|| mbPartPredMode(sdmmbtype,0) == Intra_16x16)
|
| 1135 |
|
|
begin
|
| 1136 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1137 |
|
|
$display( "ccl2SDMmb_qp_delta %0d", tempint );
|
| 1138 |
|
|
outfifo_ITB.enq(tagged SDMmb_qp_delta truncate(expgolomb_signed(buffer)));
|
| 1139 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1140 |
|
|
end
|
| 1141 |
|
|
residualChroma <= 0;
|
| 1142 |
|
|
temp5bit <= 0;
|
| 1143 |
|
|
maxNumCoeff <= 16;
|
| 1144 |
|
|
nextstate = tagged ResidualBlock 0;
|
| 1145 |
|
|
end
|
| 1146 |
|
|
default: $display( "ERROR EntropyDec: MacroblockLayer default step" );
|
| 1147 |
|
|
endcase
|
| 1148 |
|
|
end
|
| 1149 |
|
|
tagged MbPrediction .step : //return to tagged MacroblockLayer 5
|
| 1150 |
|
|
begin
|
| 1151 |
|
|
case ( step )
|
| 1152 |
|
|
0:
|
| 1153 |
|
|
begin
|
| 1154 |
|
|
if(mbPartPredMode(sdmmbtype,0) == Intra_16x16)
|
| 1155 |
|
|
begin
|
| 1156 |
|
|
$display( "ccl2SDMMintra_chroma_pred_mode %0d", expgolomb_unsigned(buffer) );
|
| 1157 |
|
|
outfifo.enq(tagged SDMMintra_chroma_pred_mode truncate(expgolomb_unsigned(buffer)));
|
| 1158 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1159 |
|
|
nextstate = tagged MacroblockLayer 5;
|
| 1160 |
|
|
end
|
| 1161 |
|
|
else if(mbPartPredMode(sdmmbtype,0) == Intra_4x4)
|
| 1162 |
|
|
begin
|
| 1163 |
|
|
temp5bit <= 16;
|
| 1164 |
|
|
nextstate = tagged MbPrediction 1;
|
| 1165 |
|
|
end
|
| 1166 |
|
|
else if(num_ref_idx_l0_active_minus1 > 0)
|
| 1167 |
|
|
begin
|
| 1168 |
|
|
temp3bit0 <= numMbPart(sdmmbtype);
|
| 1169 |
|
|
nextstate = tagged MbPrediction 2;
|
| 1170 |
|
|
end
|
| 1171 |
|
|
else
|
| 1172 |
|
|
begin
|
| 1173 |
|
|
temp3bit0 <= numMbPart(sdmmbtype);
|
| 1174 |
|
|
nextstate = tagged MbPrediction 3;
|
| 1175 |
|
|
end
|
| 1176 |
|
|
end
|
| 1177 |
|
|
1:
|
| 1178 |
|
|
begin
|
| 1179 |
|
|
if(temp5bit == 0)
|
| 1180 |
|
|
begin
|
| 1181 |
|
|
$display( "ccl2SDMMintra_chroma_pred_mode %0d", expgolomb_unsigned(buffer) );
|
| 1182 |
|
|
outfifo.enq(tagged SDMMintra_chroma_pred_mode truncate(expgolomb_unsigned(buffer)));
|
| 1183 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1184 |
|
|
nextstate = tagged MacroblockLayer 5;
|
| 1185 |
|
|
end
|
| 1186 |
|
|
else
|
| 1187 |
|
|
begin
|
| 1188 |
|
|
////$display( "ccl2SDMMprev_intra4x4_pred_mode_flag %0d", buffer[buffersize-1] );
|
| 1189 |
|
|
if(buffer[buffersize-1] == 0)
|
| 1190 |
|
|
begin
|
| 1191 |
|
|
Bit#(4) tttt = buffer[buffersize-1:buffersize-4];
|
| 1192 |
|
|
$display( "ccl2SDMMrem_intra4x4_pred_mode %0d", tttt );
|
| 1193 |
|
|
outfifo.enq(tagged SDMMrem_intra4x4_pred_mode tttt);
|
| 1194 |
|
|
numbitsused = 4;
|
| 1195 |
|
|
end
|
| 1196 |
|
|
else
|
| 1197 |
|
|
begin
|
| 1198 |
|
|
outfifo.enq(tagged SDMMrem_intra4x4_pred_mode 4'b1000);
|
| 1199 |
|
|
numbitsused = 1;
|
| 1200 |
|
|
end
|
| 1201 |
|
|
temp5bit <= temp5bit-1;
|
| 1202 |
|
|
nextstate = tagged MbPrediction 1;
|
| 1203 |
|
|
end
|
| 1204 |
|
|
end
|
| 1205 |
|
|
2:
|
| 1206 |
|
|
begin
|
| 1207 |
|
|
if(num_ref_idx_l0_active_minus1 == 1)
|
| 1208 |
|
|
begin
|
| 1209 |
|
|
$display( "ccl2SDMMref_idx_l0 %0d", 1-buffer[buffersize-1] );
|
| 1210 |
|
|
outfifo.enq(tagged SDMMref_idx_l0 zeroExtend(1-buffer[buffersize-1]));
|
| 1211 |
|
|
numbitsused = 1;
|
| 1212 |
|
|
end
|
| 1213 |
|
|
else
|
| 1214 |
|
|
begin
|
| 1215 |
|
|
$display( "ccl2SDMMref_idx_l0 %0d", expgolomb_unsigned(buffer) );
|
| 1216 |
|
|
outfifo.enq(tagged SDMMref_idx_l0 truncate(expgolomb_unsigned(buffer)));
|
| 1217 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1218 |
|
|
end
|
| 1219 |
|
|
if(temp3bit0 == 1)
|
| 1220 |
|
|
begin
|
| 1221 |
|
|
temp3bit0 <= numMbPart(sdmmbtype);
|
| 1222 |
|
|
nextstate = tagged MbPrediction 3;
|
| 1223 |
|
|
end
|
| 1224 |
|
|
else
|
| 1225 |
|
|
begin
|
| 1226 |
|
|
temp3bit0 <= temp3bit0-1;
|
| 1227 |
|
|
nextstate = tagged MbPrediction 2;
|
| 1228 |
|
|
end
|
| 1229 |
|
|
end
|
| 1230 |
|
|
3:
|
| 1231 |
|
|
begin
|
| 1232 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1233 |
|
|
$display( "ccl2SDMMmvd_l0 %0d", tempint );
|
| 1234 |
|
|
outfifo.enq(tagged SDMMmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1235 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1236 |
|
|
nextstate = tagged MbPrediction 4;
|
| 1237 |
|
|
end
|
| 1238 |
|
|
4:
|
| 1239 |
|
|
begin
|
| 1240 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1241 |
|
|
$display( "ccl2SDMMmvd_l0 %0d", tempint );
|
| 1242 |
|
|
outfifo.enq(tagged SDMMmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1243 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1244 |
|
|
temp3bit0 <= temp3bit0-1;
|
| 1245 |
|
|
if(temp3bit0 == 1)
|
| 1246 |
|
|
nextstate = tagged MacroblockLayer 5;
|
| 1247 |
|
|
else
|
| 1248 |
|
|
nextstate = tagged MbPrediction 3;
|
| 1249 |
|
|
end
|
| 1250 |
|
|
default: $display( "ERROR EntropyDec: MbPrediction default step" );
|
| 1251 |
|
|
endcase
|
| 1252 |
|
|
end
|
| 1253 |
|
|
tagged SubMbPrediction .step : //return to MacroblockLayer 5
|
| 1254 |
|
|
begin
|
| 1255 |
|
|
case ( step )
|
| 1256 |
|
|
0:
|
| 1257 |
|
|
begin
|
| 1258 |
|
|
$display( "ccl2SDMSsub_mb_type %0d", expgolomb_unsigned(buffer) );
|
| 1259 |
|
|
outfifo.enq(tagged SDMSsub_mb_type truncate(expgolomb_unsigned(buffer)));
|
| 1260 |
|
|
temp3bit0 <= numSubMbPart(truncate(expgolomb_unsigned(buffer)));
|
| 1261 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1262 |
|
|
nextstate = tagged SubMbPrediction 1;
|
| 1263 |
|
|
end
|
| 1264 |
|
|
1:
|
| 1265 |
|
|
begin
|
| 1266 |
|
|
$display( "ccl2SDMSsub_mb_type %0d", expgolomb_unsigned(buffer) );
|
| 1267 |
|
|
outfifo.enq(tagged SDMSsub_mb_type truncate(expgolomb_unsigned(buffer)));
|
| 1268 |
|
|
temp3bit1 <= numSubMbPart(truncate(expgolomb_unsigned(buffer)));
|
| 1269 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1270 |
|
|
nextstate = tagged SubMbPrediction 2;
|
| 1271 |
|
|
end
|
| 1272 |
|
|
2:
|
| 1273 |
|
|
begin
|
| 1274 |
|
|
$display( "ccl2SDMSsub_mb_type %0d", expgolomb_unsigned(buffer) );
|
| 1275 |
|
|
outfifo.enq(tagged SDMSsub_mb_type truncate(expgolomb_unsigned(buffer)));
|
| 1276 |
|
|
temp3bit2 <= numSubMbPart(truncate(expgolomb_unsigned(buffer)));
|
| 1277 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1278 |
|
|
nextstate = tagged SubMbPrediction 3;
|
| 1279 |
|
|
end
|
| 1280 |
|
|
3:
|
| 1281 |
|
|
begin
|
| 1282 |
|
|
$display( "ccl2SDMSsub_mb_type %0d", expgolomb_unsigned(buffer) );
|
| 1283 |
|
|
outfifo.enq(tagged SDMSsub_mb_type truncate(expgolomb_unsigned(buffer)));
|
| 1284 |
|
|
temp3bit3 <= numSubMbPart(truncate(expgolomb_unsigned(buffer)));
|
| 1285 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1286 |
|
|
if(num_ref_idx_l0_active_minus1 > 0
|
| 1287 |
|
|
&& sdmmbtype != P_8x8ref0)
|
| 1288 |
|
|
nextstate = tagged SubMbPrediction 4;
|
| 1289 |
|
|
else
|
| 1290 |
|
|
nextstate = tagged SubMbPrediction 8;
|
| 1291 |
|
|
end
|
| 1292 |
|
|
4:
|
| 1293 |
|
|
begin
|
| 1294 |
|
|
if(num_ref_idx_l0_active_minus1 == 1)
|
| 1295 |
|
|
begin
|
| 1296 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", 1-buffer[buffersize-1] );
|
| 1297 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 zeroExtend(1-buffer[buffersize-1]));
|
| 1298 |
|
|
numbitsused = 1;
|
| 1299 |
|
|
end
|
| 1300 |
|
|
else
|
| 1301 |
|
|
begin
|
| 1302 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", expgolomb_unsigned(buffer) );
|
| 1303 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 truncate(expgolomb_unsigned(buffer)));
|
| 1304 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1305 |
|
|
end
|
| 1306 |
|
|
nextstate = tagged SubMbPrediction 5;
|
| 1307 |
|
|
end
|
| 1308 |
|
|
5:
|
| 1309 |
|
|
begin
|
| 1310 |
|
|
if(num_ref_idx_l0_active_minus1 == 1)
|
| 1311 |
|
|
begin
|
| 1312 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", 1-buffer[buffersize-1] );
|
| 1313 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 zeroExtend(1-buffer[buffersize-1]));
|
| 1314 |
|
|
numbitsused = 1;
|
| 1315 |
|
|
end
|
| 1316 |
|
|
else
|
| 1317 |
|
|
begin
|
| 1318 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", expgolomb_unsigned(buffer) );
|
| 1319 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 truncate(expgolomb_unsigned(buffer)));
|
| 1320 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1321 |
|
|
end
|
| 1322 |
|
|
nextstate = tagged SubMbPrediction 6;
|
| 1323 |
|
|
end
|
| 1324 |
|
|
6:
|
| 1325 |
|
|
begin
|
| 1326 |
|
|
if(num_ref_idx_l0_active_minus1 == 1)
|
| 1327 |
|
|
begin
|
| 1328 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", 1-buffer[buffersize-1] );
|
| 1329 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 zeroExtend(1-buffer[buffersize-1]));
|
| 1330 |
|
|
numbitsused = 1;
|
| 1331 |
|
|
end
|
| 1332 |
|
|
else
|
| 1333 |
|
|
begin
|
| 1334 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", expgolomb_unsigned(buffer) );
|
| 1335 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 truncate(expgolomb_unsigned(buffer)));
|
| 1336 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1337 |
|
|
end
|
| 1338 |
|
|
nextstate = tagged SubMbPrediction 7;
|
| 1339 |
|
|
end
|
| 1340 |
|
|
7:
|
| 1341 |
|
|
begin
|
| 1342 |
|
|
if(num_ref_idx_l0_active_minus1 == 1)
|
| 1343 |
|
|
begin
|
| 1344 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", 1-buffer[buffersize-1] );
|
| 1345 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 zeroExtend(1-buffer[buffersize-1]));
|
| 1346 |
|
|
numbitsused = 1;
|
| 1347 |
|
|
end
|
| 1348 |
|
|
else
|
| 1349 |
|
|
begin
|
| 1350 |
|
|
$display( "ccl2SDMSref_idx_l0 %0d", expgolomb_unsigned(buffer) );
|
| 1351 |
|
|
outfifo.enq(tagged SDMSref_idx_l0 truncate(expgolomb_unsigned(buffer)));
|
| 1352 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1353 |
|
|
end
|
| 1354 |
|
|
nextstate = tagged SubMbPrediction 8;
|
| 1355 |
|
|
end
|
| 1356 |
|
|
8:
|
| 1357 |
|
|
begin
|
| 1358 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1359 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1360 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1361 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1362 |
|
|
nextstate = tagged SubMbPrediction 9;
|
| 1363 |
|
|
end
|
| 1364 |
|
|
9:
|
| 1365 |
|
|
begin
|
| 1366 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1367 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1368 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1369 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1370 |
|
|
temp3bit0 <= temp3bit0-1;
|
| 1371 |
|
|
if(temp3bit0 == 1)
|
| 1372 |
|
|
nextstate = tagged SubMbPrediction 10;
|
| 1373 |
|
|
else
|
| 1374 |
|
|
nextstate = tagged SubMbPrediction 8;
|
| 1375 |
|
|
end
|
| 1376 |
|
|
10:
|
| 1377 |
|
|
begin
|
| 1378 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1379 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1380 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1381 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1382 |
|
|
nextstate = tagged SubMbPrediction 11;
|
| 1383 |
|
|
end
|
| 1384 |
|
|
11:
|
| 1385 |
|
|
begin
|
| 1386 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1387 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1388 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1389 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1390 |
|
|
temp3bit1 <= temp3bit1-1;
|
| 1391 |
|
|
if(temp3bit1 == 1)
|
| 1392 |
|
|
nextstate = tagged SubMbPrediction 12;
|
| 1393 |
|
|
else
|
| 1394 |
|
|
nextstate = tagged SubMbPrediction 10;
|
| 1395 |
|
|
end
|
| 1396 |
|
|
12:
|
| 1397 |
|
|
begin
|
| 1398 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1399 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1400 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1401 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1402 |
|
|
nextstate = tagged SubMbPrediction 13;
|
| 1403 |
|
|
end
|
| 1404 |
|
|
13:
|
| 1405 |
|
|
begin
|
| 1406 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1407 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1408 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1409 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1410 |
|
|
temp3bit2 <= temp3bit2-1;
|
| 1411 |
|
|
if(temp3bit2 == 1)
|
| 1412 |
|
|
nextstate = tagged SubMbPrediction 14;
|
| 1413 |
|
|
else
|
| 1414 |
|
|
nextstate = tagged SubMbPrediction 12;
|
| 1415 |
|
|
end
|
| 1416 |
|
|
14:
|
| 1417 |
|
|
begin
|
| 1418 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1419 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1420 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1421 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1422 |
|
|
nextstate = tagged SubMbPrediction 15;
|
| 1423 |
|
|
end
|
| 1424 |
|
|
15:
|
| 1425 |
|
|
begin
|
| 1426 |
|
|
tempint = unpack(expgolomb_signed(buffer));
|
| 1427 |
|
|
$display( "ccl2SDMSmvd_l0 %0d", tempint );
|
| 1428 |
|
|
outfifo.enq(tagged SDMSmvd_l0 truncate(expgolomb_signed(buffer)));
|
| 1429 |
|
|
numbitsused = expgolomb_numbits(buffer);
|
| 1430 |
|
|
temp3bit3 <= temp3bit3-1;
|
| 1431 |
|
|
if(temp3bit3 == 1)
|
| 1432 |
|
|
nextstate = tagged MacroblockLayer 5;
|
| 1433 |
|
|
else
|
| 1434 |
|
|
nextstate = tagged SubMbPrediction 14;
|
| 1435 |
|
|
end
|
| 1436 |
|
|
default: $display( "ERROR EntropyDec: SubMbPrediction default step" );
|
| 1437 |
|
|
endcase
|
| 1438 |
|
|
end
|
| 1439 |
|
|
tagged ResidualBlock .step : //if(residualChroma==0) return to Residual 1; else if(maxNumCoeff==4) return to Residual 3; else return to Residual 5
|
| 1440 |
|
|
begin//don't modify maxNumCoeff, residualChroma, and increment temp5bit on return
|
| 1441 |
|
|
case ( step )
|
| 1442 |
|
|
0:
|
| 1443 |
|
|
begin
|
| 1444 |
|
|
cavlcFIFO.clear();
|
| 1445 |
|
|
if(maxNumCoeff != 4)
|
| 1446 |
|
|
begin
|
| 1447 |
|
|
if(residualChroma == 0)
|
| 1448 |
|
|
tempreg <= zeroExtend(calcnc.nCcalc_luma(truncate(temp5bit)));
|
| 1449 |
|
|
else
|
| 1450 |
|
|
tempreg <= zeroExtend(calcnc.nCcalc_chroma(truncate(temp5bit)));
|
| 1451 |
|
|
end
|
| 1452 |
|
|
else
|
| 1453 |
|
|
tempreg <= zeroExtend(6'b111111);
|
| 1454 |
|
|
if(mbPartPredMode(sdmmbtype,0)==Intra_16x16 && maxNumCoeff==16)
|
| 1455 |
|
|
nextstate = tagged ResidualBlock 1;
|
| 1456 |
|
|
else if(residualChroma==0 && (sdmcodedBlockPatternLuma & (1 << zeroExtend(temp5bit[3:2])))==0)
|
| 1457 |
|
|
begin
|
| 1458 |
|
|
calcnc.nNupdate_luma(truncate(temp5bit),0);
|
| 1459 |
|
|
outfifo_ITB.enq(tagged SDMRcoeffLevelZeros maxNumCoeff);
|
| 1460 |
|
|
nextstate = tagged ResidualBlock 5;
|
| 1461 |
|
|
end
|
| 1462 |
|
|
else if(residualChroma==1 && maxNumCoeff==4 && (sdmcodedBlockPatternChroma & 3)==0)
|
| 1463 |
|
|
begin
|
| 1464 |
|
|
outfifo_ITB.enq(tagged SDMRcoeffLevelZeros 4);
|
| 1465 |
|
|
nextstate = tagged ResidualBlock 5;
|
| 1466 |
|
|
end
|
| 1467 |
|
|
else if(residualChroma==1 && maxNumCoeff!=4 && (sdmcodedBlockPatternChroma & 2)==0)
|
| 1468 |
|
|
begin
|
| 1469 |
|
|
calcnc.nNupdate_chroma(truncate(temp5bit),0);
|
| 1470 |
|
|
outfifo_ITB.enq(tagged SDMRcoeffLevelZeros 15);
|
| 1471 |
|
|
nextstate = tagged ResidualBlock 5;
|
| 1472 |
|
|
end
|
| 1473 |
|
|
else
|
| 1474 |
|
|
nextstate = tagged ResidualBlock 1;
|
| 1475 |
|
|
//$display( "TRACE EntropyDec: ResidualBlock 0 temp5bit = %0d", temp5bit);
|
| 1476 |
|
|
end
|
| 1477 |
|
|
1:
|
| 1478 |
|
|
begin
|
| 1479 |
|
|
Bit#(2) trailingOnesTemp = 0;
|
| 1480 |
|
|
Bit#(5) totalCoeffTemp = 0;
|
| 1481 |
|
|
{trailingOnesTemp,totalCoeffTemp,numbitsused} = cavlc_coeff_token( buffer, truncate(tempreg) );
|
| 1482 |
|
|
temp3bit0 <= zeroExtend(trailingOnesTemp);//trailingOnes
|
| 1483 |
|
|
totalCoeff <= totalCoeffTemp;
|
| 1484 |
|
|
if(residualChroma == 0 && !(mbPartPredMode(sdmmbtype,0)==Intra_16x16 && maxNumCoeff==16))
|
| 1485 |
|
|
calcnc.nNupdate_luma(truncate(temp5bit),totalCoeffTemp);
|
| 1486 |
|
|
else if(residualChroma == 1 && maxNumCoeff != 4)
|
| 1487 |
|
|
calcnc.nNupdate_chroma(truncate(temp5bit),totalCoeffTemp);
|
| 1488 |
|
|
temp5bit2 <= 0;//i
|
| 1489 |
|
|
tempreg <= 0;//levelCode temp
|
| 1490 |
|
|
if(totalCoeffTemp > 10 && trailingOnesTemp < 3)
|
| 1491 |
|
|
temp3bit1 <= 1;//suffixLength
|
| 1492 |
|
|
else
|
| 1493 |
|
|
temp3bit1 <= 0;//suffixLength
|
| 1494 |
|
|
nextstate = tagged ResidualBlock 2;
|
| 1495 |
|
|
//$display( "TRACE EntropyDec: ResidualBlock 1 nC = %0d", tempreg);
|
| 1496 |
|
|
$display( "ccl2SDMRtotal_coeff %0d", totalCoeffTemp );
|
| 1497 |
|
|
$display( "ccl2SDMRtrailing_ones %0d", trailingOnesTemp );
|
| 1498 |
|
|
end
|
| 1499 |
|
|
2:
|
| 1500 |
|
|
begin
|
| 1501 |
|
|
if( totalCoeff != 0 )
|
| 1502 |
|
|
begin
|
| 1503 |
|
|
if(temp5bit2 < zeroExtend(temp3bit0))
|
| 1504 |
|
|
begin
|
| 1505 |
|
|
if(buffer[buffersize-1] == 1)
|
| 1506 |
|
|
cavlcFIFO.enq(-1);
|
| 1507 |
|
|
else
|
| 1508 |
|
|
cavlcFIFO.enq(1);
|
| 1509 |
|
|
numbitsused = 1;
|
| 1510 |
|
|
end
|
| 1511 |
|
|
else
|
| 1512 |
|
|
begin
|
| 1513 |
|
|
Bit#(32) buffertempshow = buffer[buffersize-1:buffersize-32];
|
| 1514 |
|
|
Bit#(3) suffixLength = temp3bit1;
|
| 1515 |
|
|
Bit#(4) levelSuffixSize = zeroExtend(suffixLength);
|
| 1516 |
|
|
Bit#(4) level_prefix = cavlc_level_prefix( buffer );
|
| 1517 |
|
|
Bit#(5) temp_level_prefix = zeroExtend(level_prefix);
|
| 1518 |
|
|
Bit#(28) tempbuffer = buffer[buffersize-1:buffersize-28] << zeroExtend(temp_level_prefix+1);
|
| 1519 |
|
|
Bit#(14) levelCode = zeroExtend(level_prefix) << zeroExtend(suffixLength);
|
| 1520 |
|
|
if(level_prefix == 14 && suffixLength == 0)
|
| 1521 |
|
|
levelSuffixSize = 4;
|
| 1522 |
|
|
else if(level_prefix == 15)
|
| 1523 |
|
|
levelSuffixSize = 12;
|
| 1524 |
|
|
levelCode = levelCode + zeroExtend(tempbuffer[27:16] >> (12-zeroExtend(levelSuffixSize)));//level_suffix
|
| 1525 |
|
|
if(level_prefix == 15 && suffixLength == 0)
|
| 1526 |
|
|
levelCode = levelCode + 15;
|
| 1527 |
|
|
if(temp5bit2 == zeroExtend(temp3bit0) && temp3bit0 < 3)
|
| 1528 |
|
|
levelCode = levelCode + 2;
|
| 1529 |
|
|
if(suffixLength == 0)
|
| 1530 |
|
|
suffixLength = 1;
|
| 1531 |
|
|
if( suffixLength < 6 && ((levelCode+2) >> 1) > (3 << zeroExtend(suffixLength-1)) )
|
| 1532 |
|
|
suffixLength = suffixLength+1;
|
| 1533 |
|
|
if(levelCode[0] == 0)
|
| 1534 |
|
|
cavlcFIFO.enq(truncate((levelCode+2) >> 1));
|
| 1535 |
|
|
else
|
| 1536 |
|
|
cavlcFIFO.enq(truncate((~levelCode) >> 1));
|
| 1537 |
|
|
if(levelCode[0] == 0)//////////////////////////////////////////////////
|
| 1538 |
|
|
begin
|
| 1539 |
|
|
tempint = signExtend(unpack((levelCode+2) >> 1));
|
| 1540 |
|
|
//$display( "TRACE EntropyDec: temp level %0d", tempint );
|
| 1541 |
|
|
end
|
| 1542 |
|
|
else
|
| 1543 |
|
|
begin
|
| 1544 |
|
|
Bit#(13) tempinttemp = truncate((~levelCode) >> 1);
|
| 1545 |
|
|
tempint = signExtend(unpack(tempinttemp));
|
| 1546 |
|
|
//$display( "TRACE EntropyDec: temp level %0d", tempint );
|
| 1547 |
|
|
end///////////////////////////////////////////////////////////////////////
|
| 1548 |
|
|
temp3bit1 <= suffixLength;
|
| 1549 |
|
|
numbitsused = zeroExtend(level_prefix)+1+zeroExtend(levelSuffixSize);
|
| 1550 |
|
|
end
|
| 1551 |
|
|
end
|
| 1552 |
|
|
if( totalCoeff==0 || temp5bit2+1==totalCoeff )
|
| 1553 |
|
|
begin
|
| 1554 |
|
|
temp5bit2 <= 0;
|
| 1555 |
|
|
zerosLeft <= 0;
|
| 1556 |
|
|
if(totalCoeff < maxNumCoeff)
|
| 1557 |
|
|
nextstate = tagged ResidualBlock 3;
|
| 1558 |
|
|
else
|
| 1559 |
|
|
nextstate = tagged ResidualBlock 5;
|
| 1560 |
|
|
end
|
| 1561 |
|
|
else
|
| 1562 |
|
|
begin
|
| 1563 |
|
|
temp5bit2 <= temp5bit2 + 1;
|
| 1564 |
|
|
nextstate = tagged ResidualBlock 2;
|
| 1565 |
|
|
end
|
| 1566 |
|
|
end
|
| 1567 |
|
|
3:
|
| 1568 |
|
|
begin
|
| 1569 |
|
|
Bit#(4) tempZerosLeft;
|
| 1570 |
|
|
if(totalCoeff > 0)
|
| 1571 |
|
|
begin
|
| 1572 |
|
|
{tempZerosLeft,numbitsused} = cavlc_total_zeros( buffer, truncate(totalCoeff), maxNumCoeff);
|
| 1573 |
|
|
$display( "ccl2SDMRtotal_zeros %0d", tempZerosLeft );//////////////////////////////////////
|
| 1574 |
|
|
end
|
| 1575 |
|
|
else
|
| 1576 |
|
|
tempZerosLeft = 0;
|
| 1577 |
|
|
zerosLeft <= tempZerosLeft;
|
| 1578 |
|
|
if(maxNumCoeff - totalCoeff - zeroExtend(tempZerosLeft) > 0)
|
| 1579 |
|
|
begin
|
| 1580 |
|
|
$display( "ccl2SDMRcoeffLevelZeros %0d", maxNumCoeff - totalCoeff - zeroExtend(tempZerosLeft) );
|
| 1581 |
|
|
outfifo_ITB.enq(tagged SDMRcoeffLevelZeros (maxNumCoeff - totalCoeff - zeroExtend(tempZerosLeft)));
|
| 1582 |
|
|
end
|
| 1583 |
|
|
nextstate = tagged ResidualBlock 5;
|
| 1584 |
|
|
end
|
| 1585 |
|
|
5:
|
| 1586 |
|
|
begin
|
| 1587 |
|
|
if( totalCoeff > 0 )
|
| 1588 |
|
|
begin
|
| 1589 |
|
|
tempint = signExtend(unpack(cavlcFIFO.first()));
|
| 1590 |
|
|
$display( "ccl2SDMRcoeffLevel %0d", tempint );
|
| 1591 |
|
|
if( zerosLeft > 0 )
|
| 1592 |
|
|
begin
|
| 1593 |
|
|
Bit#(4) run_before = 0;
|
| 1594 |
|
|
if( totalCoeff > 1 )
|
| 1595 |
|
|
{run_before,numbitsused} = cavlc_run_before( buffer, zerosLeft);
|
| 1596 |
|
|
else
|
| 1597 |
|
|
run_before = zerosLeft;
|
| 1598 |
|
|
zerosLeft <= zerosLeft - run_before;
|
| 1599 |
|
|
outfifo_ITB.enq(tagged SDMRcoeffLevelPlusZeros {level:cavlcFIFO.first(),zeros:zeroExtend(run_before)});
|
| 1600 |
|
|
if( run_before > 0 )
|
| 1601 |
|
|
$display( "ccl2SDMRcoeffLevelZeros %0d", run_before );
|
| 1602 |
|
|
end
|
| 1603 |
|
|
else
|
| 1604 |
|
|
outfifo_ITB.enq(tagged SDMRcoeffLevelPlusZeros {level:cavlcFIFO.first(),zeros:0});
|
| 1605 |
|
|
cavlcFIFO.deq();
|
| 1606 |
|
|
totalCoeff <= totalCoeff-1;
|
| 1607 |
|
|
end
|
| 1608 |
|
|
if( totalCoeff <= 1 )
|
| 1609 |
|
|
begin
|
| 1610 |
|
|
if(residualChroma==0)
|
| 1611 |
|
|
begin
|
| 1612 |
|
|
nextstate = tagged ResidualBlock 0;
|
| 1613 |
|
|
if(mbPartPredMode(sdmmbtype,0)==Intra_16x16 && maxNumCoeff==16)
|
| 1614 |
|
|
maxNumCoeff <= 15;
|
| 1615 |
|
|
else if(temp5bit==15)
|
| 1616 |
|
|
begin
|
| 1617 |
|
|
temp5bit <= 0;
|
| 1618 |
|
|
maxNumCoeff <= 4;
|
| 1619 |
|
|
residualChroma <= 1;
|
| 1620 |
|
|
end
|
| 1621 |
|
|
else
|
| 1622 |
|
|
temp5bit <= temp5bit+1;
|
| 1623 |
|
|
end
|
| 1624 |
|
|
else if(maxNumCoeff==4)
|
| 1625 |
|
|
begin
|
| 1626 |
|
|
nextstate = tagged ResidualBlock 0;
|
| 1627 |
|
|
if(temp5bit==1)
|
| 1628 |
|
|
begin
|
| 1629 |
|
|
temp5bit <= 0;
|
| 1630 |
|
|
maxNumCoeff <= 15;
|
| 1631 |
|
|
end
|
| 1632 |
|
|
else
|
| 1633 |
|
|
temp5bit <= temp5bit+1;
|
| 1634 |
|
|
end
|
| 1635 |
|
|
else
|
| 1636 |
|
|
begin
|
| 1637 |
|
|
if(temp5bit==7)
|
| 1638 |
|
|
begin
|
| 1639 |
|
|
temp5bit <= 0;
|
| 1640 |
|
|
nextstate = tagged SliceData 3;
|
| 1641 |
|
|
end
|
| 1642 |
|
|
else
|
| 1643 |
|
|
begin
|
| 1644 |
|
|
nextstate = tagged ResidualBlock 0;
|
| 1645 |
|
|
temp5bit <= temp5bit+1;
|
| 1646 |
|
|
end
|
| 1647 |
|
|
end
|
| 1648 |
|
|
end
|
| 1649 |
|
|
else
|
| 1650 |
|
|
nextstate = tagged ResidualBlock 5;
|
| 1651 |
|
|
end
|
| 1652 |
|
|
default: $display( "ERROR EntropyDec: ResidualBlock default step" );
|
| 1653 |
|
|
endcase
|
| 1654 |
|
|
end
|
| 1655 |
|
|
endcase
|
| 1656 |
|
|
|
| 1657 |
|
|
if(numbitsused+1 > bufcount)
|
| 1658 |
|
|
begin
|
| 1659 |
|
|
$display( "ERROR EntropyDec: not enough bits in buffer" );
|
| 1660 |
|
|
nextstate = Start;
|
| 1661 |
|
|
end
|
| 1662 |
|
|
buffer <= buffer << zeroExtend(numbitsused);
|
| 1663 |
|
|
bufcount <= bufcount-numbitsused;
|
| 1664 |
|
|
state <= nextstate;
|
| 1665 |
|
|
|
| 1666 |
|
|
endrule
|
| 1667 |
|
|
|
| 1668 |
|
|
|
| 1669 |
|
|
interface Put ioin = fifoToPut(infifo);
|
| 1670 |
|
|
interface Get ioout = fifoToGet(outfifo);
|
| 1671 |
|
|
interface Get ioout_InverseTrans = fifoToGet(outfifo_ITB);
|
| 1672 |
|
|
|
| 1673 |
|
|
interface mem_client = calcnc.mem_client;
|
| 1674 |
|
|
|
| 1675 |
|
|
endmodule
|
| 1676 |
|
|
|
| 1677 |
|
|
endpackage
|
