ref: e38c7c18f77ba03e4f3c18c6de5cc4cbb17dcdf3
dir: /libentcode/mfrngcod.h/
#if !defined(_mfrngcode_H) # define _mfrngcode_H (1) # include "entcode.h" /*Constants used by the entropy encoder/decoder.*/ /*The number of bits to output at a time.*/ # define EC_SYM_BITS (8) /*The total number of bits in each of the state registers.*/ # define EC_CODE_BITS (32) /*The maximum symbol value.*/ # define EC_SYM_MAX ((1U<<EC_SYM_BITS)-1) /*Bits to shift by to move a symbol into the high-order position.*/ # define EC_CODE_SHIFT (EC_CODE_BITS-EC_SYM_BITS-1) /*Carry bit of the high-order range symbol.*/ # define EC_CODE_TOP (1U<<EC_CODE_BITS-1) /*Low-order bit of the high-order range symbol.*/ # define EC_CODE_BOT (EC_CODE_TOP>>EC_SYM_BITS) /*Code for which propogating carries are possible.*/ # define EC_CODE_CARRY (EC_SYM_MAX<<EC_CODE_SHIFT) /*The number of bits available for the last, partial symbol in the code field.*/ # define EC_CODE_EXTRA ((EC_CODE_BITS-2)%EC_SYM_BITS+1) /*A mask for the bits available in the coding buffer. This allows different platforms to use a variable with more bits, if it is convenient. We will only use EC_CODE_BITS of it.*/ # define EC_CODE_MASK ((1U<<EC_CODE_BITS-1)-1<<1|1) /*The non-zero symbol of the second possible reserved ending. This must be the high-bit.*/ # define EC_FOF_RSV1 (1<<EC_SYM_BITS-1) /*A mask for all the other bits.*/ # define EC_FOF_RSV1_MASK (EC_FOF_RSV1-1) #endif