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Get number for dynamic huffman tree

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This commit is contained in:
atxr 2024-02-21 17:09:33 +01:00
parent 090e17b3d9
commit a0b4fe5433
2 changed files with 20 additions and 2 deletions
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7
libmineziper/include/libmineziper_zip.h
View file

@ -66,8 +66,8 @@ typedef struct ISH
int raw; int raw;
struct struct
{ {
unsigned last_block : 1; unsigned last_block : 1;
unsigned block_type : 2; unsigned block_type : 2;
}; };
}; };
} ISH; } ISH;
@ -98,6 +98,9 @@ void get_cdh(zip* out);
char* get_encoded_block(zip* in, int n); char* get_encoded_block(zip* in, int n);
void deflate(zip* in); void deflate(zip* in);
int get_number_bit_length_code(DHCH* dhch);
int get_number_dist_code(DHCH* dhch);
int get_number_litteral_code(DHCH* dhch);
short decode_length_token(bitstream* bs, int token); short decode_length_token(bitstream* bs, int token);
int decode_distance_token(bitstream* bs, int token); int decode_distance_token(bitstream* bs, int token);

15
libmineziper/src/libmineziper_zip.c
View file

@ -143,6 +143,21 @@ char* decode_type1_block_v2(
} }
} }
int get_number_bit_length_code(DHCH* dhch)
{
return (dhch->bit_length_code & 0b1111) + 4;
}
int get_number_dist_code(DHCH* dhch)
{
return (dhch->dist_codes & 0b11111) + 1;
}
int get_number_litteral_code(DHCH* dhch)
{
return (dhch->literal_codes & 0b11111) + 257;
}
short decode_length_token(bitstream* bs, int token) short decode_length_token(bitstream* bs, int token)
{ {
token -= END_OF_BLOCK + 1; token -= END_OF_BLOCK + 1;