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// The MIT License// Copyright (c) 2006-2007 Massachusetts Institute of Technology// Permission is hereby granted, free of charge, to any person obtaining a copy// of this software and associated documentation files (the "Software"), to deal// in the Software without restriction, including without limitation the rights// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell// copies of the Software, and to permit persons to whom the Software is// furnished to do so, subject to the following conditions:// The above copyright notice and this permission notice shall be included in// all copies or substantial portions of the Software.// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN// THE SOFTWARE.//**********************************************************************// CAVLC codes//----------------------------------------------------------------------//////package CAVLC;import H264Types::*;//-----------------------------------------------------------// Helper functions(* noinline *)function Tuple3#(Bit#(2),Bit#(5),Bufcount) cavlc_coeff_token( Buffer inbuffer, Bit#(6) nC );if(nC[5] == 1)beginBit#(8) buffertemp = inbuffer[buffersize-1:buffersize-8];if(buffertemp[7:6] == 2'b01) return tuple3(0,0,2);else if(buffertemp[7:2] == 6'b000111) return tuple3(0,1,6);else if(buffertemp[7:7] == 1'b1) return tuple3(1,1,1);else if(buffertemp[7:2] == 6'b000100) return tuple3(0,2,6);else if(buffertemp[7:2] == 6'b000110) return tuple3(1,2,6);else if(buffertemp[7:5] == 3'b001) return tuple3(2,2,3);else if(buffertemp[7:2] == 6'b000011) return tuple3(0,3,6);else if(buffertemp[7:1] == 7'b0000011) return tuple3(1,3,7);else if(buffertemp[7:1] == 7'b0000010) return tuple3(2,3,7);else if(buffertemp[7:2] == 6'b000101) return tuple3(3,3,6);else if(buffertemp[7:2] == 6'b000010) return tuple3(0,4,6);else if(buffertemp[7:0] == 8'b00000011) return tuple3(1,4,8);else if(buffertemp[7:0] == 8'b00000010) return tuple3(2,4,8);else if(buffertemp[7:1] == 7'b0000000) return tuple3(3,4,7);else return tuple3(0,0,100);endelse if(nC[4] == 1 || nC[3] == 1)beginBit#(6) buffertemp = inbuffer[buffersize-1:buffersize-6];if(buffertemp[5:0] == 6'b000011) return tuple3(0,0,6);else if(buffertemp[5:0] == 6'b000000) return tuple3(0,1,6);else if(buffertemp[5:0] == 6'b000001) return tuple3(1,1,6);else if(buffertemp[5:0] == 6'b000100) return tuple3(0,2,6);else if(buffertemp[5:0] == 6'b000101) return tuple3(1,2,6);else if(buffertemp[5:0] == 6'b000110) return tuple3(2,2,6);else if(buffertemp[5:0] == 6'b001000) return tuple3(0,3,6);else if(buffertemp[5:0] == 6'b001001) return tuple3(1,3,6);else if(buffertemp[5:0] == 6'b001010) return tuple3(2,3,6);else if(buffertemp[5:0] == 6'b001011) return tuple3(3,3,6);else if(buffertemp[5:0] == 6'b001100) return tuple3(0,4,6);else if(buffertemp[5:0] == 6'b001101) return tuple3(1,4,6);else if(buffertemp[5:0] == 6'b001110) return tuple3(2,4,6);else if(buffertemp[5:0] == 6'b001111) return tuple3(3,4,6);else if(buffertemp[5:0] == 6'b010000) return tuple3(0,5,6);else if(buffertemp[5:0] == 6'b010001) return tuple3(1,5,6);else if(buffertemp[5:0] == 6'b010010) return tuple3(2,5,6);else if(buffertemp[5:0] == 6'b010011) return tuple3(3,5,6);else if(buffertemp[5:0] == 6'b010100) return tuple3(0,6,6);else if(buffertemp[5:0] == 6'b010101) return tuple3(1,6,6);else if(buffertemp[5:0] == 6'b010110) return tuple3(2,6,6);else if(buffertemp[5:0] == 6'b010111) return tuple3(3,6,6);else if(buffertemp[5:0] == 6'b011000) return tuple3(0,7,6);else if(buffertemp[5:0] == 6'b011001) return tuple3(1,7,6);else if(buffertemp[5:0] == 6'b011010) return tuple3(2,7,6);else if(buffertemp[5:0] == 6'b011011) return tuple3(3,7,6);else if(buffertemp[5:0] == 6'b011100) return tuple3(0,8,6);else if(buffertemp[5:0] == 6'b011101) return tuple3(1,8,6);else if(buffertemp[5:0] == 6'b011110) return tuple3(2,8,6);else if(buffertemp[5:0] == 6'b011111) return tuple3(3,8,6);else if(buffertemp[5:0] == 6'b100000) return tuple3(0,9,6);else if(buffertemp[5:0] == 6'b100001) return tuple3(1,9,6);else if(buffertemp[5:0] == 6'b100010) return tuple3(2,9,6);else if(buffertemp[5:0] == 6'b100011) return tuple3(3,9,6);else if(buffertemp[5:0] == 6'b100100) return tuple3(0,10,6);else if(buffertemp[5:0] == 6'b100101) return tuple3(1,10,6);else if(buffertemp[5:0] == 6'b100110) return tuple3(2,10,6);else if(buffertemp[5:0] == 6'b100111) return tuple3(3,10,6);else if(buffertemp[5:0] == 6'b101000) return tuple3(0,11,6);else if(buffertemp[5:0] == 6'b101001) return tuple3(1,11,6);else if(buffertemp[5:0] == 6'b101010) return tuple3(2,11,6);else if(buffertemp[5:0] == 6'b101011) return tuple3(3,11,6);else if(buffertemp[5:0] == 6'b101100) return tuple3(0,12,6);else if(buffertemp[5:0] == 6'b101101) return tuple3(1,12,6);else if(buffertemp[5:0] == 6'b101110) return tuple3(2,12,6);else if(buffertemp[5:0] == 6'b101111) return tuple3(3,12,6);else if(buffertemp[5:0] == 6'b110000) return tuple3(0,13,6);else if(buffertemp[5:0] == 6'b110001) return tuple3(1,13,6);else if(buffertemp[5:0] == 6'b110010) return tuple3(2,13,6);else if(buffertemp[5:0] == 6'b110011) return tuple3(3,13,6);else if(buffertemp[5:0] == 6'b110100) return tuple3(0,14,6);else if(buffertemp[5:0] == 6'b110101) return tuple3(1,14,6);else if(buffertemp[5:0] == 6'b110110) return tuple3(2,14,6);else if(buffertemp[5:0] == 6'b110111) return tuple3(3,14,6);else if(buffertemp[5:0] == 6'b111000) return tuple3(0,15,6);else if(buffertemp[5:0] == 6'b111001) return tuple3(1,15,6);else if(buffertemp[5:0] == 6'b111010) return tuple3(2,15,6);else if(buffertemp[5:0] == 6'b111011) return tuple3(3,15,6);else if(buffertemp[5:0] == 6'b111100) return tuple3(0,16,6);else if(buffertemp[5:0] == 6'b111101) return tuple3(1,16,6);else if(buffertemp[5:0] == 6'b111110) return tuple3(2,16,6);else if(buffertemp[5:0] == 6'b111111) return tuple3(3,16,6);else return tuple3(0,0,100);endelse if(nC[2] == 1)beginBit#(10) buffertemp = inbuffer[buffersize-1:buffersize-10];if(buffertemp[9:6] == 4'b1111) return tuple3(0,0,4);else if(buffertemp[9:4] == 6'b001111) return tuple3(0,1,6);else if(buffertemp[9:6] == 4'b1110) return tuple3(1,1,4);else if(buffertemp[9:4] == 6'b001011) return tuple3(0,2,6);else if(buffertemp[9:5] == 5'b01111) return tuple3(1,2,5);else if(buffertemp[9:6] == 4'b1101) return tuple3(2,2,4);else if(buffertemp[9:4] == 6'b001000) return tuple3(0,3,6);else if(buffertemp[9:5] == 5'b01100) return tuple3(1,3,5);else if(buffertemp[9:5] == 5'b01110) return tuple3(2,3,5);else if(buffertemp[9:6] == 4'b1100) return tuple3(3,3,4);else if(buffertemp[9:3] == 7'b0001111) return tuple3(0,4,7);else if(buffertemp[9:5] == 5'b01010) return tuple3(1,4,5);else if(buffertemp[9:5] == 5'b01011) return tuple3(2,4,5);else if(buffertemp[9:6] == 4'b1011) return tuple3(3,4,4);else if(buffertemp[9:3] == 7'b0001011) return tuple3(0,5,7);else if(buffertemp[9:5] == 5'b01000) return tuple3(1,5,5);else if(buffertemp[9:5] == 5'b01001) return tuple3(2,5,5);else if(buffertemp[9:6] == 4'b1010) return tuple3(3,5,4);else if(buffertemp[9:3] == 7'b0001001) return tuple3(0,6,7);else if(buffertemp[9:4] == 6'b001110) return tuple3(1,6,6);else if(buffertemp[9:4] == 6'b001101) return tuple3(2,6,6);else if(buffertemp[9:6] == 4'b1001) return tuple3(3,6,4);else if(buffertemp[9:3] == 7'b0001000) return tuple3(0,7,7);else if(buffertemp[9:4] == 6'b001010) return tuple3(1,7,6);else if(buffertemp[9:4] == 6'b001001) return tuple3(2,7,6);else if(buffertemp[9:6] == 4'b1000) return tuple3(3,7,4);else if(buffertemp[9:2] == 8'b00001111) return tuple3(0,8,8);else if(buffertemp[9:3] == 7'b0001110) return tuple3(1,8,7);else if(buffertemp[9:3] == 7'b0001101) return tuple3(2,8,7);else if(buffertemp[9:5] == 5'b01101) return tuple3(3,8,5);else if(buffertemp[9:2] == 8'b00001011) return tuple3(0,9,8);else if(buffertemp[9:2] == 8'b00001110) return tuple3(1,9,8);else if(buffertemp[9:3] == 7'b0001010) return tuple3(2,9,7);else if(buffertemp[9:4] == 6'b001100) return tuple3(3,9,6);else if(buffertemp[9:1] == 9'b000001111) return tuple3(0,10,9);else if(buffertemp[9:2] == 8'b00001010) return tuple3(1,10,8);else if(buffertemp[9:2] == 8'b00001101) return tuple3(2,10,8);else if(buffertemp[9:3] == 7'b0001100) return tuple3(3,10,7);else if(buffertemp[9:1] == 9'b000001011) return tuple3(0,11,9);else if(buffertemp[9:1] == 9'b000001110) return tuple3(1,11,9);else if(buffertemp[9:2] == 8'b00001001) return tuple3(2,11,8);else if(buffertemp[9:2] == 8'b00001100) return tuple3(3,11,8);else if(buffertemp[9:1] == 9'b000001000) return tuple3(0,12,9);else if(buffertemp[9:1] == 9'b000001010) return tuple3(1,12,9);else if(buffertemp[9:1] == 9'b000001101) return tuple3(2,12,9);else if(buffertemp[9:2] == 8'b00001000) return tuple3(3,12,8);else if(buffertemp[9:0] == 10'b0000001101) return tuple3(0,13,10);else if(buffertemp[9:1] == 9'b000000111) return tuple3(1,13,9);else if(buffertemp[9:1] == 9'b000001001) return tuple3(2,13,9);else if(buffertemp[9:1] == 9'b000001100) return tuple3(3,13,9);else if(buffertemp[9:0] == 10'b0000001001) return tuple3(0,14,10);else if(buffertemp[9:0] == 10'b0000001100) return tuple3(1,14,10);else if(buffertemp[9:0] == 10'b0000001011) return tuple3(2,14,10);else if(buffertemp[9:0] == 10'b0000001010) return tuple3(3,14,10);else if(buffertemp[9:0] == 10'b0000000101) return tuple3(0,15,10);else if(buffertemp[9:0] == 10'b0000001000) return tuple3(1,15,10);else if(buffertemp[9:0] == 10'b0000000111) return tuple3(2,15,10);else if(buffertemp[9:0] == 10'b0000000110) return tuple3(3,15,10);else if(buffertemp[9:0] == 10'b0000000001) return tuple3(0,16,10);else if(buffertemp[9:0] == 10'b0000000100) return tuple3(1,16,10);else if(buffertemp[9:0] == 10'b0000000011) return tuple3(2,16,10);else if(buffertemp[9:0] == 10'b0000000010) return tuple3(3,16,10);else return tuple3(0,0,100);endelse if(nC[1] == 1)beginBit#(14) buffertemp = inbuffer[buffersize-1:buffersize-14];if(buffertemp[13:12] == 2'b11) return tuple3(0,0,2);else if(buffertemp[13:8] == 6'b001011) return tuple3(0,1,6);else if(buffertemp[13:12] == 2'b10) return tuple3(1,1,2);else if(buffertemp[13:8] == 6'b000111) return tuple3(0,2,6);else if(buffertemp[13:9] == 5'b00111) return tuple3(1,2,5);else if(buffertemp[13:11] == 3'b011) return tuple3(2,2,3);else if(buffertemp[13:7] == 7'b0000111) return tuple3(0,3,7);else if(buffertemp[13:8] == 6'b001010) return tuple3(1,3,6);else if(buffertemp[13:8] == 6'b001001) return tuple3(2,3,6);else if(buffertemp[13:10] == 4'b0101) return tuple3(3,3,4);else if(buffertemp[13:6] == 8'b00000111) return tuple3(0,4,8);else if(buffertemp[13:8] == 6'b000110) return tuple3(1,4,6);else if(buffertemp[13:8] == 6'b000101) return tuple3(2,4,6);else if(buffertemp[13:10] == 4'b0100) return tuple3(3,4,4);else if(buffertemp[13:6] == 8'b00000100) return tuple3(0,5,8);else if(buffertemp[13:7] == 7'b0000110) return tuple3(1,5,7);else if(buffertemp[13:7] == 7'b0000101) return tuple3(2,5,7);else if(buffertemp[13:9] == 5'b00110) return tuple3(3,5,5);else if(buffertemp[13:5] == 9'b000000111) return tuple3(0,6,9);else if(buffertemp[13:6] == 8'b00000110) return tuple3(1,6,8);else if(buffertemp[13:6] == 8'b00000101) return tuple3(2,6,8);else if(buffertemp[13:8] == 6'b001000) return tuple3(3,6,6);else if(buffertemp[13:3] == 11'b00000001111) return tuple3(0,7,11);else if(buffertemp[13:5] == 9'b000000110) return tuple3(1,7,9);else if(buffertemp[13:5] == 9'b000000101) return tuple3(2,7,9);else if(buffertemp[13:8] == 6'b000100) return tuple3(3,7,6);else if(buffertemp[13:3] == 11'b00000001011) return tuple3(0,8,11);else if(buffertemp[13:3] == 11'b00000001110) return tuple3(1,8,11);else if(buffertemp[13:3] == 11'b00000001101) return tuple3(2,8,11);else if(buffertemp[13:7] == 7'b0000100) return tuple3(3,8,7);else if(buffertemp[13:2] == 12'b000000001111) return tuple3(0,9,12);else if(buffertemp[13:3] == 11'b00000001010) return tuple3(1,9,11);else if(buffertemp[13:3] == 11'b00000001001) return tuple3(2,9,11);else if(buffertemp[13:5] == 9'b000000100) return tuple3(3,9,9);else if(buffertemp[13:2] == 12'b000000001011) return tuple3(0,10,12);else if(buffertemp[13:2] == 12'b000000001110) return tuple3(1,10,12);else if(buffertemp[13:2] == 12'b000000001101) return tuple3(2,10,12);else if(buffertemp[13:3] == 11'b00000001100) return tuple3(3,10,11);else if(buffertemp[13:2] == 12'b000000001000) return tuple3(0,11,12);else if(buffertemp[13:2] == 12'b000000001010) return tuple3(1,11,12);else if(buffertemp[13:2] == 12'b000000001001) return tuple3(2,11,12);else if(buffertemp[13:3] == 11'b00000001000) return tuple3(3,11,11);else if(buffertemp[13:1] == 13'b0000000001111) return tuple3(0,12,13);else if(buffertemp[13:1] == 13'b0000000001110) return tuple3(1,12,13);else if(buffertemp[13:1] == 13'b0000000001101) return tuple3(2,12,13);else if(buffertemp[13:2] == 12'b000000001100) return tuple3(3,12,12);else if(buffertemp[13:1] == 13'b0000000001011) return tuple3(0,13,13);else if(buffertemp[13:1] == 13'b0000000001010) return tuple3(1,13,13);else if(buffertemp[13:1] == 13'b0000000001001) return tuple3(2,13,13);else if(buffertemp[13:1] == 13'b0000000001100) return tuple3(3,13,13);else if(buffertemp[13:1] == 13'b0000000000111) return tuple3(0,14,13);else if(buffertemp[13:0] == 14'b00000000001011) return tuple3(1,14,14);else if(buffertemp[13:1] == 13'b0000000000110) return tuple3(2,14,13);else if(buffertemp[13:1] == 13'b0000000001000) return tuple3(3,14,13);else if(buffertemp[13:0] == 14'b00000000001001) return tuple3(0,15,14);else if(buffertemp[13:0] == 14'b00000000001000) return tuple3(1,15,14);else if(buffertemp[13:0] == 14'b00000000001010) return tuple3(2,15,14);else if(buffertemp[13:1] == 13'b0000000000001) return tuple3(3,15,13);else if(buffertemp[13:0] == 14'b00000000000111) return tuple3(0,16,14);else if(buffertemp[13:0] == 14'b00000000000110) return tuple3(1,16,14);else if(buffertemp[13:0] == 14'b00000000000101) return tuple3(2,16,14);else if(buffertemp[13:0] == 14'b00000000000100) return tuple3(3,16,14);else return tuple3(0,0,100);endelsebeginBit#(16) buffertemp = inbuffer[buffersize-1:buffersize-16];if(buffertemp[15:15] == 1'b1) return tuple3(0,0,1);else if(buffertemp[15:10] == 6'b000101) return tuple3(0,1,6);else if(buffertemp[15:14] == 2'b01) return tuple3(1,1,2);else if(buffertemp[15:8] == 8'b00000111) return tuple3(0,2,8);else if(buffertemp[15:10] == 6'b000100) return tuple3(1,2,6);else if(buffertemp[15:13] == 3'b001) return tuple3(2,2,3);else if(buffertemp[15:7] == 9'b000000111) return tuple3(0,3,9);else if(buffertemp[15:8] == 8'b00000110) return tuple3(1,3,8);else if(buffertemp[15:9] == 7'b0000101) return tuple3(2,3,7);else if(buffertemp[15:11] == 5'b00011) return tuple3(3,3,5);else if(buffertemp[15:6] == 10'b0000000111) return tuple3(0,4,10);else if(buffertemp[15:7] == 9'b000000110) return tuple3(1,4,9);else if(buffertemp[15:8] == 8'b00000101) return tuple3(2,4,8);else if(buffertemp[15:10] == 6'b000011) return tuple3(3,4,6);else if(buffertemp[15:5] == 11'b00000000111) return tuple3(0,5,11);else if(buffertemp[15:6] == 10'b0000000110) return tuple3(1,5,10);else if(buffertemp[15:7] == 9'b000000101) return tuple3(2,5,9);else if(buffertemp[15:9] == 7'b0000100) return tuple3(3,5,7);else if(buffertemp[15:3] == 13'b0000000001111) return tuple3(0,6,13);else if(buffertemp[15:5] == 11'b00000000110) return tuple3(1,6,11);else if(buffertemp[15:6] == 10'b0000000101) return tuple3(2,6,10);else if(buffertemp[15:8] == 8'b00000100) return tuple3(3,6,8);else if(buffertemp[15:3] == 13'b0000000001011) return tuple3(0,7,13);else if(buffertemp[15:3] == 13'b0000000001110) return tuple3(1,7,13);else if(buffertemp[15:5] == 11'b00000000101) return tuple3(2,7,11);else if(buffertemp[15:7] == 9'b000000100) return tuple3(3,7,9);else if(buffertemp[15:3] == 13'b0000000001000) return tuple3(0,8,13);else if(buffertemp[15:3] == 13'b0000000001010) return tuple3(1,8,13);else if(buffertemp[15:3] == 13'b0000000001101) return tuple3(2,8,13);else if(buffertemp[15:6] == 10'b0000000100) return tuple3(3,8,10);else if(buffertemp[15:2] == 14'b00000000001111) return tuple3(0,9,14);else if(buffertemp[15:2] == 14'b00000000001110) return tuple3(1,9,14);else if(buffertemp[15:3] == 13'b0000000001001) return tuple3(2,9,13);else if(buffertemp[15:5] == 11'b00000000100) return tuple3(3,9,11);else if(buffertemp[15:2] == 14'b00000000001011) return tuple3(0,10,14);else if(buffertemp[15:2] == 14'b00000000001010) return tuple3(1,10,14);else if(buffertemp[15:2] == 14'b00000000001101) return tuple3(2,10,14);else if(buffertemp[15:3] == 13'b0000000001100) return tuple3(3,10,13);else if(buffertemp[15:1] == 15'b000000000001111) return tuple3(0,11,15);else if(buffertemp[15:1] == 15'b000000000001110) return tuple3(1,11,15);else if(buffertemp[15:2] == 14'b00000000001001) return tuple3(2,11,14);else if(buffertemp[15:2] == 14'b00000000001100) return tuple3(3,11,14);else if(buffertemp[15:1] == 15'b000000000001011) return tuple3(0,12,15);else if(buffertemp[15:1] == 15'b000000000001010) return tuple3(1,12,15);else if(buffertemp[15:1] == 15'b000000000001101) return tuple3(2,12,15);else if(buffertemp[15:2] == 14'b00000000001000) return tuple3(3,12,14);else if(buffertemp[15:0] == 16'b0000000000001111) return tuple3(0,13,16);else if(buffertemp[15:1] == 15'b000000000000001) return tuple3(1,13,15);else if(buffertemp[15:1] == 15'b000000000001001) return tuple3(2,13,15);else if(buffertemp[15:1] == 15'b000000000001100) return tuple3(3,13,15);else if(buffertemp[15:0] == 16'b0000000000001011) return tuple3(0,14,16);else if(buffertemp[15:0] == 16'b0000000000001110) return tuple3(1,14,16);else if(buffertemp[15:0] == 16'b0000000000001101) return tuple3(2,14,16);else if(buffertemp[15:1] == 15'b000000000001000) return tuple3(3,14,15);else if(buffertemp[15:0] == 16'b0000000000000111) return tuple3(0,15,16);else if(buffertemp[15:0] == 16'b0000000000001010) return tuple3(1,15,16);else if(buffertemp[15:0] == 16'b0000000000001001) return tuple3(2,15,16);else if(buffertemp[15:0] == 16'b0000000000001100) return tuple3(3,15,16);else if(buffertemp[15:0] == 16'b0000000000000100) return tuple3(0,16,16);else if(buffertemp[15:0] == 16'b0000000000000110) return tuple3(1,16,16);else if(buffertemp[15:0] == 16'b0000000000000101) return tuple3(2,16,16);else if(buffertemp[15:0] == 16'b0000000000001000) return tuple3(3,16,16);else return tuple3(0,0,100);endendfunction(* noinline *)function Bit#(4) cavlc_level_prefix( Buffer inbuffer );Bit#(4) tempout = 15;for(Integer ii=15; ii>0; ii=ii-1)beginif(inbuffer[buffersize-fromInteger(ii)]==1'b1)tempout = fromInteger(ii)-1;endreturn tempout;endfunction(* noinline *)function Tuple2#(Bit#(4),Bufcount) cavlc_total_zeros( Buffer inbuffer, Bit#(4) inTotalCoeff, Bit#(5) inMaxNumCoeff);if(inMaxNumCoeff==4)beginBit#(3) buffertemp3 = inbuffer[buffersize-1:buffersize-3];Bit#(2) buffertemp2 = inbuffer[buffersize-1:buffersize-2];case ( inTotalCoeff )1:beginif(inbuffer[buffersize-1] == 1)return tuple2(0,1);else if(buffertemp2 == 2'b01)return tuple2(1,2);else if(buffertemp3 == 3'b001)return tuple2(2,3);elsereturn tuple2(3,3);end2:beginif(inbuffer[buffersize-1] == 1)return tuple2(0,1);else if(buffertemp2 == 2'b01)return tuple2(1,2);elsereturn tuple2(2,2);end3:beginif(inbuffer[buffersize-1] == 1)return tuple2(0,1);elsereturn tuple2(1,1);enddefault: return tuple2(0,100);endcaseendelsebeginBit#(6) buffertemp = inbuffer[buffersize-1:buffersize-6];case ( inTotalCoeff )1:beginBit#(10) buffertemp2 = inbuffer[buffersize-1:buffersize-10];if(buffertemp2[9:9] == 1'b1) return tuple2(0,1);else if(buffertemp2[9:7] == 3'b011) return tuple2(1,3);else if(buffertemp2[9:7] == 3'b010) return tuple2(2,3);else if(buffertemp2[9:6] == 4'b0011) return tuple2(3,4);else if(buffertemp2[9:6] == 4'b0010) return tuple2(4,4);else if(buffertemp2[9:5] == 5'b00011) return tuple2(5,5);else if(buffertemp2[9:5] == 5'b00010) return tuple2(6,5);else if(buffertemp2[9:4] == 6'b000011) return tuple2(7,6);else if(buffertemp2[9:4] == 6'b000010) return tuple2(8,6);else if(buffertemp2[9:3] == 7'b0000011) return tuple2(9,7);else if(buffertemp2[9:3] == 7'b0000010) return tuple2(10,7);else if(buffertemp2[9:2] == 8'b00000011) return tuple2(11,8);else if(buffertemp2[9:2] == 8'b00000010) return tuple2(12,8);else if(buffertemp2[9:1] == 9'b000000011) return tuple2(13,9);else if(buffertemp2[9:1] == 9'b000000010) return tuple2(14,9);else return tuple2(15,9);end2:beginif(buffertemp[5:3] == 3'b111) return tuple2(0,3);else if(buffertemp[5:3] == 3'b110) return tuple2(1,3);else if(buffertemp[5:3] == 3'b101) return tuple2(2,3);else if(buffertemp[5:3] == 3'b100) return tuple2(3,3);else if(buffertemp[5:3] == 3'b011) return tuple2(4,3);else if(buffertemp[5:2] == 4'b0101) return tuple2(5,4);else if(buffertemp[5:2] == 4'b0100) return tuple2(6,4);else if(buffertemp[5:2] == 4'b0011) return tuple2(7,4);else if(buffertemp[5:2] == 4'b0010) return tuple2(8,4);else if(buffertemp[5:1] == 5'b00011) return tuple2(9,5);else if(buffertemp[5:1] == 5'b00010) return tuple2(10,5);else if(buffertemp[5:0] == 6'b000011) return tuple2(11,6);else if(buffertemp[5:0] == 6'b000010) return tuple2(12,6);else if(buffertemp[5:0] == 6'b000001) return tuple2(13,6);else return tuple2(14,6);end3:beginif(buffertemp[5:2] == 4'b0101) return tuple2(0,4);else if(buffertemp[5:3] == 3'b111) return tuple2(1,3);else if(buffertemp[5:3] == 3'b110) return tuple2(2,3);else if(buffertemp[5:3] == 3'b101) return tuple2(3,3);else if(buffertemp[5:2] == 4'b0100) return tuple2(4,4);else if(buffertemp[5:2] == 4'b0011) return tuple2(5,4);else if(buffertemp[5:3] == 3'b100) return tuple2(6,3);else if(buffertemp[5:3] == 3'b011) return tuple2(7,3);else if(buffertemp[5:2] == 4'b0010) return tuple2(8,4);else if(buffertemp[5:1] == 5'b00011) return tuple2(9,5);else if(buffertemp[5:1] == 5'b00010) return tuple2(10,5);else if(buffertemp[5:0] == 6'b000001) return tuple2(11,6);else if(buffertemp[5:1] == 5'b00001) return tuple2(12,5);else return tuple2(13,6);end4:beginif(buffertemp[5:1] == 5'b00011) return tuple2(0,5);else if(buffertemp[5:3] == 3'b111) return tuple2(1,3);else if(buffertemp[5:2] == 4'b0101) return tuple2(2,4);else if(buffertemp[5:2] == 4'b0100) return tuple2(3,4);else if(buffertemp[5:3] == 3'b110) return tuple2(4,3);else if(buffertemp[5:3] == 3'b101) return tuple2(5,3);else if(buffertemp[5:3] == 3'b100) return tuple2(6,3);else if(buffertemp[5:2] == 4'b0011) return tuple2(7,4);else if(buffertemp[5:3] == 3'b011) return tuple2(8,3);else if(buffertemp[5:2] == 4'b0010) return tuple2(9,4);else if(buffertemp[5:1] == 5'b00010) return tuple2(10,5);else if(buffertemp[5:1] == 5'b00001) return tuple2(11,5);else return tuple2(12,5);end5:beginif(buffertemp[5:2] == 4'b0101) return tuple2(0,4);else if(buffertemp[5:2] == 4'b0100) return tuple2(1,4);else if(buffertemp[5:2] == 4'b0011) return tuple2(2,4);else if(buffertemp[5:3] == 3'b111) return tuple2(3,3);else if(buffertemp[5:3] == 3'b110) return tuple2(4,3);else if(buffertemp[5:3] == 3'b101) return tuple2(5,3);else if(buffertemp[5:3] == 3'b100) return tuple2(6,3);else if(buffertemp[5:3] == 3'b011) return tuple2(7,3);else if(buffertemp[5:2] == 4'b0010) return tuple2(8,4);else if(buffertemp[5:1] == 5'b00001) return tuple2(9,5);else if(buffertemp[5:2] == 4'b0001) return tuple2(10,4);else return tuple2(11,5);end6:beginif(buffertemp[5:0] == 6'b000001) return tuple2(0,6);else if(buffertemp[5:1] == 5'b00001) return tuple2(1,5);else if(buffertemp[5:3] == 3'b111) return tuple2(2,3);else if(buffertemp[5:3] == 3'b110) return tuple2(3,3);else if(buffertemp[5:3] == 3'b101) return tuple2(4,3);else if(buffertemp[5:3] == 3'b100) return tuple2(5,3);else if(buffertemp[5:3] == 3'b011) return tuple2(6,3);else if(buffertemp[5:3] == 3'b010) return tuple2(7,3);else if(buffertemp[5:2] == 4'b0001) return tuple2(8,4);else if(buffertemp[5:3] == 3'b001) return tuple2(9,3);else return tuple2(10,6);end7:beginif(buffertemp[5:0] == 6'b000001) return tuple2(0,6);else if(buffertemp[5:1] == 5'b00001) return tuple2(1,5);else if(buffertemp[5:3] == 3'b101) return tuple2(2,3);else if(buffertemp[5:3] == 3'b100) return tuple2(3,3);else if(buffertemp[5:3] == 3'b011) return tuple2(4,3);else if(buffertemp[5:4] == 2'b11) return tuple2(5,2);else if(buffertemp[5:3] == 3'b010) return tuple2(6,3);else if(buffertemp[5:2] == 4'b0001) return tuple2(7,4);else if(buffertemp[5:3] == 3'b001) return tuple2(8,3);else return tuple2(9,6);end8:beginif(buffertemp[5:0] == 6'b000001) return tuple2(0,6);else if(buffertemp[5:2] == 4'b0001) return tuple2(1,4);else if(buffertemp[5:1] == 5'b00001) return tuple2(2,5);else if(buffertemp[5:3] == 3'b011) return tuple2(3,3);else if(buffertemp[5:4] == 2'b11) return tuple2(4,2);else if(buffertemp[5:4] == 2'b10) return tuple2(5,2);else if(buffertemp[5:3] == 3'b010) return tuple2(6,3);else if(buffertemp[5:3] == 3'b001) return tuple2(7,3);else return tuple2(8,6);end9:beginif(buffertemp[5:0] == 6'b000001) return tuple2(0,6);else if(buffertemp[5:0] == 6'b000000) return tuple2(1,6);else if(buffertemp[5:2] == 4'b0001) return tuple2(2,4);else if(buffertemp[5:4] == 2'b11) return tuple2(3,2);else if(buffertemp[5:4] == 2'b10) return tuple2(4,2);else if(buffertemp[5:3] == 3'b001) return tuple2(5,3);else if(buffertemp[5:4] == 2'b01) return tuple2(6,2);else return tuple2(7,5);end10:beginif(buffertemp[5:1] == 5'b00001) return tuple2(0,5);else if(buffertemp[5:1] == 5'b00000) return tuple2(1,5);else if(buffertemp[5:3] == 3'b001) return tuple2(2,3);else if(buffertemp[5:4] == 2'b11) return tuple2(3,2);else if(buffertemp[5:4] == 2'b10) return tuple2(4,2);else if(buffertemp[5:4] == 2'b01) return tuple2(5,2);else return tuple2(6,4);end11:beginif(buffertemp[5:2] == 4'b0000) return tuple2(0,4);else if(buffertemp[5:2] == 4'b0001) return tuple2(1,4);else if(buffertemp[5:3] == 3'b001) return tuple2(2,3);else if(buffertemp[5:3] == 3'b010) return tuple2(3,3);else if(buffertemp[5:5] == 1'b1) return tuple2(4,1);else return tuple2(5,3);end12:beginif(buffertemp[5:2] == 4'b0000) return tuple2(0,4);else if(buffertemp[5:2] == 4'b0001) return tuple2(1,4);else if(buffertemp[5:4] == 2'b01) return tuple2(2,2);else if(buffertemp[5:5] == 1'b1) return tuple2(3,1);else return tuple2(4,3);end13:beginif(buffertemp[5:3] == 3'b000) return tuple2(0,3);else if(buffertemp[5:3] == 3'b001) return tuple2(1,3);else if(buffertemp[5:5] == 1'b1) return tuple2(2,1);else return tuple2(3,2);end14:beginif(buffertemp[5:4] == 2'b00) return tuple2(0,2);else if(buffertemp[5:4] == 2'b01) return tuple2(1,2);else return tuple2(2,1);end15:beginif(buffertemp[5:5] == 1'b0) return tuple2(0,1);else return tuple2(1,1);enddefault: return tuple2(0,100);endcaseendendfunction(* noinline *)function Tuple2#(Bit#(4),Bufcount) cavlc_run_before( Buffer inbuffer, Bit#(4) inZerosLeft);Bit#(3) buffertemp3 = inbuffer[buffersize-1:buffersize-3];Bit#(2) buffertemp2 = inbuffer[buffersize-1:buffersize-2];case ( inZerosLeft )0: return tuple2(0,100);1:beginif(inbuffer[buffersize-1] == 1)return tuple2(0,1);elsereturn tuple2(1,1);end2:beginif(inbuffer[buffersize-1] == 1)return tuple2(0,1);else if(buffertemp2 == 2'b01)return tuple2(1,2);elsereturn tuple2(2,2);end3:beginif(buffertemp2 == 2'b11)return tuple2(0,2);else if(buffertemp2 == 2'b10)return tuple2(1,2);else if(buffertemp2 == 2'b01)return tuple2(2,2);elsereturn tuple2(3,2);end4:beginif(buffertemp2 == 2'b11)return tuple2(0,2);else if(buffertemp2 == 2'b10)return tuple2(1,2);else if(buffertemp2 == 2'b01)return tuple2(2,2);else if(buffertemp3 == 3'b001)return tuple2(3,3);elsereturn tuple2(4,3);end5:beginif(buffertemp2 == 2'b11)return tuple2(0,2);else if(buffertemp2 == 2'b10)return tuple2(1,2);else if(buffertemp3 == 3'b011)return tuple2(2,3);else if(buffertemp3 == 3'b010)return tuple2(3,3);else if(buffertemp3 == 3'b001)return tuple2(4,3);elsereturn tuple2(5,3);end6:beginif(buffertemp2 == 2'b11)return tuple2(0,2);else if(buffertemp3 == 3'b000)return tuple2(1,3);else if(buffertemp3 == 3'b001)return tuple2(2,3);else if(buffertemp3 == 3'b011)return tuple2(3,3);else if(buffertemp3 == 3'b010)return tuple2(4,3);else if(buffertemp3 == 3'b101)return tuple2(5,3);elsereturn tuple2(6,3);enddefault:beginif(buffertemp3 != 3'b000)beginBit#(4) outputtemp = zeroExtend(3'b111 - buffertemp3);return tuple2(outputtemp,3);endelsebeginBit#(4) returnVal1 = 14;Bufcount returnVal2 = 11;for(Integer ii=10; ii>=4; ii=ii-1)beginif(inbuffer[buffersize-fromInteger(ii)]==1'b1)beginreturnVal1 = fromInteger(ii)+3;returnVal2 = fromInteger(ii);endendreturn tuple2(returnVal1,returnVal2);endendendcaseendfunctionendpackage