Leahnaya/WfcPatcher
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That should be most of the encoding.

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Admiral H. Curtiss 2014-05-29 17:26:56 +02:00
parent aee4459445
commit 26e5a7da23
1 changed files with 77 additions and 55 deletions
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132
blz.cs
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@ -290,9 +290,10 @@ namespace WfcPatcher {
//*----------------------------------------------------------------------------
byte[] BLZ_Code( byte[] raw_buffer, uint raw_len, out uint new_len, uint best ) {
byte[] pak_buffer;
uint pak, raw, raw_end, flg, tmp;
uint pak_len, inc_len, hdr_len, enc_len, len, pos, max;
uint len_best, pos_best, len_next, pos_next, len_post, pos_post;
uint pak, raw, raw_end, flg = 0;
byte[] tmp;
uint pak_len, inc_len, hdr_len, enc_len, len = 0, pos = 0, max = 0;
uint len_best = 0, pos_best = 0, len_next = 0, pos_next = 0, len_post = 0, pos_post = 0;
uint pak_tmp, raw_tmp, raw_new;
ushort crc;
byte mask;
@ -378,7 +379,7 @@ namespace WfcPatcher {
}
#if true
if (pak - pak_buffer + raw_len - (raw - raw_buffer) < pak_tmp + raw_tmp) {
if (pak + raw_len - (raw) < pak_tmp + raw_tmp) {
#else
if (
(((pak - pak_buffer + raw_len - (raw - raw_buffer)) + 3) & -4)
@ -386,64 +387,85 @@ namespace WfcPatcher {
pak_tmp + raw_tmp
) {
#endif
pak_tmp = pak - pak_buffer;
raw_tmp = raw_len - (raw - raw_buffer);
pak_tmp = pak;
raw_tmp = raw_len - (raw);
}
}
while (mask && (mask != 1)) {
mask >>= BLZ_SHIFT;
*flg <<= 1;
}
pak_len = pak - pak_buffer;
BLZ_Invert(raw_buffer, raw_len);
BLZ_Invert(pak_buffer, pak_len);
if (!pak_tmp || (raw_len + 4 < ((pak_tmp + raw_tmp + 3) & -4) + 8)) {
pak = pak_buffer;
raw = raw_buffer;
raw_end = raw_buffer + raw_len;
while (raw < raw_end) *pak++ = *raw++;
while ((pak - pak_buffer) & 3) *pak++ = 0;
*(unsigned int *)pak = 0; pak += 4;
} else {
tmp = (unsigned char *) Memory(raw_tmp + pak_tmp + 11, sizeof(char));
for (len = 0; len < raw_tmp; len++)
tmp[len] = raw_buffer[len];
for (len = 0; len < pak_tmp; len++)
tmp[raw_tmp + len] = pak_buffer[len + pak_len - pak_tmp];
pak = pak_buffer;
pak_buffer = tmp;
free(pak);
pak = pak_buffer + raw_tmp + pak_tmp;
enc_len = pak_tmp;
hdr_len = 8;
inc_len = raw_len - pak_tmp - raw_tmp;
while ((pak - pak_buffer) & 3) {
*pak++ = 0xFF;
hdr_len++;
while ((mask != 0) && (mask != 1)) {
mask = (byte)( ( (uint)mask ) >> ( (int)BLZ_SHIFT ) );
pak_buffer[flg] <<= 1;
}
*(unsigned int *)pak = enc_len + hdr_len; pak += 3;
*pak++ = hdr_len;
*(unsigned int *)pak = inc_len - hdr_len; pak += 4;
}
pak_len = pak;
*new_len = pak - pak_buffer;
BLZ_Invert(raw_buffer, 0, raw_len);
BLZ_Invert(pak_buffer, 0, pak_len);
return(pak_buffer);
if ((pak_tmp == 0) || (raw_len + 4 < ((pak_tmp + raw_tmp + 3) & -4) + 8)) {
pak = 0;
raw = 0;
raw_end = raw_len;
while (raw < raw_end) {
pak_buffer[pak] = raw_buffer[raw];
pak++; raw++;
}
while ((pak & 3) != 0) {
pak_buffer[pak] = 0;
pak++;
}
pak_buffer[pak] = 0;
pak_buffer[pak+1] = 0;
pak_buffer[pak+2] = 0;
pak_buffer[pak+3] = 0;
pak += 4;
} else {
tmp = Memory((int)(raw_tmp + pak_tmp + 11), 1);
for (len = 0; len < raw_tmp; len++)
tmp[len] = raw_buffer[len];
for (len = 0; len < pak_tmp; len++)
tmp[raw_tmp + len] = pak_buffer[len + pak_len - pak_tmp];
pak = 0;
// !!! uuh this isn't exactly equivalent to the C code !!!
pak_buffer = tmp;
//free(pak);
pak = raw_tmp + pak_tmp;
enc_len = pak_tmp;
hdr_len = 8;
inc_len = raw_len - pak_tmp - raw_tmp;
while ((pak & 3) != 0) {
pak_buffer[pak] = 0xFF;
pak++;
hdr_len++;
}
//*(unsigned int *)pak = enc_len + hdr_len; pak += 3;
//*pak++ = hdr_len;
//*(unsigned int *)pak = inc_len - hdr_len; pak += 4;
byte[] tmpbyte = BitConverter.GetBytes( enc_len + hdr_len );
tmpbyte.CopyTo( pak_buffer, pak );
pak += 3;
pak_buffer[pak] = (byte)hdr_len;
pak++;
tmpbyte = BitConverter.GetBytes( inc_len - hdr_len );
tmpbyte.CopyTo( pak_buffer, pak );
pak += 4;
}
//*new_len = pak - pak_buffer;
new_len = pak;
return(pak_buffer);
}
/*----------------------------------------------------------------------------*/