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authorPaweł Kołodziejski2003-03-06 07:52:40 +0000
committerPaweł Kołodziejski2003-03-06 07:52:40 +0000
commit7f536134a084fb50957a27345c26fd2e6d529667 (patch)
tree27c35065b4a6933f0aed550af9efed6e55455dce /sky/rnc_deco.cpp
parent255e15248b87823fd737927f0c0cf39b2659be10 (diff)
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some pedantic cleanup
svn-id: r6706
Diffstat (limited to 'sky/rnc_deco.cpp')
-rw-r--r--sky/rnc_deco.cpp60
1 files changed, 29 insertions, 31 deletions
diff --git a/sky/rnc_deco.cpp b/sky/rnc_deco.cpp
index 6f502f0ddd..41c603d808 100644
--- a/sky/rnc_deco.cpp
+++ b/sky/rnc_deco.cpp
@@ -22,8 +22,8 @@
#include <string.h>
#include "common/scummsys.h"
-#define ROL(x, n) (((x) << (n)) | ((x) >> (16-(n))))
-#define ROR(x, n) (((x) << (16-(n))) | ((x) >> (n)))
+#define ROL(x, n) (((x) << (n)) | ((x) >> (16 - (n))))
+#define ROR(x, n) (((x) << (16 - (n))) | ((x) >> (n)))
#define XCHG(a, b) (a ^=b, b ^= a, a ^= b)
//conditional flags
@@ -36,13 +36,13 @@
#define UNPACKED_CRC -2
//other defines
-#define TABLE_SIZE (16*8)
+#define TABLE_SIZE (16 * 8)
#define MIN_LENGTH 2
#define HEADER_LEN 18
-uint16 raw_table[TABLE_SIZE/2];
-uint16 pos_table[TABLE_SIZE/2];
-uint16 len_table[TABLE_SIZE/2];
+uint16 raw_table[TABLE_SIZE / 2];
+uint16 pos_table[TABLE_SIZE / 2];
+uint16 len_table[TABLE_SIZE / 2];
#ifdef CHECKSUMS
uint16 crc_table[0x100];
@@ -52,14 +52,13 @@ uint16 bit_buffl = 0;
uint16 bit_buffh = 0;
uint8 bit_count = 0;
-
uint8 *esiptr, *ediptr; //these need to be global because input_bits() uses them
void init_crc()
{
- uint16 cnt=0;
- uint16 tmp1=0;
- uint16 tmp2=0;
+ uint16 cnt = 0;
+ uint16 tmp1 = 0;
+ uint16 tmp2 = 0;
for (tmp2 = 0; tmp2 < 0x100; tmp2++) {
tmp1 = tmp2;
@@ -77,19 +76,19 @@ void init_crc()
//calculate 16 bit crc of a block of memory
uint16 crc_block(uint8 *block, uint32 size)
{
- uint16 crc=0;
+ uint16 crc = 0;
uint8 *crcTable8 = (uint8 *)crc_table; //make a uint8* to crc_table
- uint8 tmp;
- uint32 i;
+ uint8 tmp;
+ uint32 i;
for (i = 0; i < size; i++) {
tmp = *block++;
crc ^= tmp;
- tmp = (uint8)((crc>>8)&0x00FF);
+ tmp = (uint8)((crc >> 8) & 0x00FF);
crc &= 0x00FF;
crc = crc << 1;
crc = *(uint16 *)&crcTable8[crc];
- crc ^= tmp;
+ crc ^= tmp;
}
return crc;
@@ -116,7 +115,7 @@ uint16 input_bits(uint8 amount)
newBitBuffh = READ_LE_UINT16(esiptr);
XCHG(newBitCount, amount);
amount -= newBitCount;
- newBitCount = 16 - amount;
+ newBitCount = 16 - amount;
}
remBits = ROR((uint16)(((1 << amount) - 1) & newBitBuffh), amount);
bit_buffh = newBitBuffh >> amount;
@@ -124,7 +123,6 @@ uint16 input_bits(uint8 amount)
bit_count = (uint8)newBitCount;
return returnVal;
-
}
void make_huftable(uint16 *table)
@@ -153,7 +151,7 @@ void make_huftable(uint16 *table)
a |= ((b >> j) & 1) << (bitLength - j - 1);
*table++ = a;
- *(table+0x1e) = (huffLength[i]<<8)|(i & 0x00FF);
+ *(table + 0x1e) = (huffLength[i] << 8)|(i & 0x00FF);
huffCode += 1 << (16 - bitLength);
}
}
@@ -163,20 +161,20 @@ void make_huftable(uint16 *table)
uint16 input_value(uint16 *table)
{
uint16 valOne, valTwo, value = bit_buffl;
-
+
do {
valTwo = (*table++) & value;
valOne = *table++;
-
- } while (valOne != valTwo);
- value = *(table+0x1e);
- input_bits((uint8)((value>>8)&0x00FF));
- value &= 0x00FF;
+ } while (valOne != valTwo);
+
+ value = *(table + 0x1e);
+ input_bits((uint8)((value>>8) & 0x00FF));
+ value &= 0x00FF;
if (value >= 2) {
value--;
- valOne = input_bits((uint8)value&0x00FF);
+ valOne = input_bits((uint8)value & 0x00FF);
valOne |= (1 << value);
value = valOne;
}
@@ -201,7 +199,7 @@ int UnpackM1(void *input, void *output, uint16 key)
if (CHECKSUMS)
init_crc();
- //Check for "RNC "
+ //Check for "RNC "
if (READ_BE_UINT32(inputptr) != 0x524e4301)
return NOT_PACKED;
@@ -211,25 +209,25 @@ int UnpackM1(void *input, void *output, uint16 key)
unpack_len = READ_BE_UINT32(inputptr); inputptr += 4;
pack_len = READ_BE_UINT32(inputptr); inputptr += 4;
- uint8 blocks = *(inputptr+5);
+ uint8 blocks = *(inputptr + 5);
if (CHECKSUMS) {
//read CRC's
crc_u = READ_BE_UINT16(inputptr); inputptr += 2;
crc_p = READ_BE_UINT16(inputptr); inputptr += 2;
- inputptr = (inputptr+HEADER_LEN-16);
+ inputptr = (inputptr + HEADER_LEN - 16);
if (crc_block(inputptr, pack_len) != crc_p)
return PACKED_CRC;
- inputptr = (((uint8 *)input)+HEADER_LEN);
+ inputptr = (((uint8 *)input) + HEADER_LEN);
esiptr = inputptr;
}
// inputLow = *input
inputHigh = ((uint8 *)input) + pack_len + HEADER_LEN;;
outputLow = (uint8 *)output;
- outputHigh = *(((uint8 *)input)+16) + unpack_len + outputLow;
+ outputHigh = *(((uint8 *)input) + 16) + unpack_len + outputLow;
if (! ((inputHigh <= outputLow) || (outputHigh <= inputHigh)) ) {
esiptr = inputHigh;
@@ -265,7 +263,7 @@ int UnpackM1(void *input, void *output, uint16 key)
bit_buffl &= d;
d &= a;
- a = READ_LE_UINT16((esiptr+2));
+ a = READ_LE_UINT16((esiptr + 2));
b = (b << bit_count);
a = (a << bit_count);
a |= d;