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eexuke |
//--------------------------------------------------------------------------------------------------
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// Design : nova
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// Author(s) : Ke Xu
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// Email : eexuke@yahoo.com
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// File : cavlc_consumed_bits_decoding.v
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// Generated : June 12,2005
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// Copyright (C) 2008 Ke Xu
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//-------------------------------------------------------------------------------------------------
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// Description
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// Calculate the consumed bit length of CAVLC decoder of each clock cycle
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//-------------------------------------------------------------------------------------------------
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// synopsys translate_off
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`include "timescale.v"
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// synopsys translate_on
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`include "nova_defines.v"
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module cavlc_consumed_bits_decoding (cavlc_decoder_state,NumCoeffTrailingOnes_len,TrailingOnes,
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heading_one_pos,levelSuffixSize,total_zeros_len,run_of_zeros_len,cavlc_consumed_bits_len);
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input [3:0] cavlc_decoder_state;
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input [4:0] NumCoeffTrailingOnes_len;
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input [1:0] TrailingOnes;
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input [3:0] heading_one_pos;
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input [3:0] levelSuffixSize;
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input [3:0] total_zeros_len;
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input [3:0] run_of_zeros_len;
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output [4:0] cavlc_consumed_bits_len;
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reg [4:0] cavlc_consumed_bits_len;
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always @ (cavlc_decoder_state or NumCoeffTrailingOnes_len or TrailingOnes or heading_one_pos or
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levelSuffixSize or total_zeros_len or run_of_zeros_len)
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case (cavlc_decoder_state)
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`NumCoeffTrailingOnes_LUT:cavlc_consumed_bits_len <= NumCoeffTrailingOnes_len;
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`TrailingOnesSignFlag :cavlc_consumed_bits_len <= TrailingOnes;
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`LevelPrefix :cavlc_consumed_bits_len <= heading_one_pos + 1;
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`LevelSuffix :cavlc_consumed_bits_len <= levelSuffixSize;
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`total_zeros_LUT :cavlc_consumed_bits_len <= total_zeros_len;
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`run_before_LUT :cavlc_consumed_bits_len <= run_of_zeros_len;
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default :cavlc_consumed_bits_len <= 0;
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endcase
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endmodule
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