/* inflate stream from source to dest */
int tinf_uncompress(void *dest, unsigned int *destLen,
const void *source, unsigned int sourceLen)
{
TINF_DATA d;
int bfinal;
d.source = (const unsigned char *)source;
d.bitcount = 0;
d.dest = (unsigned char *)dest;
d.destLen = destLen;
*destLen = 0;
do {
unsigned int btype;
int res;
/* read final block flag */
bfinal = tinf_getbit(&d);
/* read block type (2 bits) */
btype = tinf_read_bits(&d, 2, 0);
/* decompress block */
switch (btype)
{
case 0:
/* decompress uncompressed block */
res = tinf_inflate_uncompressed_block(&d);
break;
case 1:
/* decompress block with fixed huffman trees */
res = tinf_inflate_fixed_block(&d,&tbl);
break;
case 2:
/* decompress block with dynamic huffman trees */
res = tinf_inflate_dynamic_block(&d,&tbl);
break;
default:
return TINF_DATA_ERROR;
}
if (res != TINF_OK) return TINF_DATA_ERROR;
if (d.source > (unsigned char *)source + sourceLen)
return TINF_DATA_ERROR;
} while (!bfinal);
return TINF_OK;
}
/* inflate stream from source to dest */
int tinf_uncompress(void *dest, unsigned int *destLen,
const void *source, unsigned int sourceLen,
const unsigned int swapped_btype[3])
{
TINF_DATA d;
int bfinal;
/* initialise data */
d.source = (const unsigned char *)source;
d.bitcount = 0;
d.dest = (unsigned char *)dest;
d.destLen = destLen;
d.sourceLen = 0;
d.sourceSize = sourceLen;
d.destSize = *destLen;
*destLen = 0;
do {
unsigned int btype;
int res;
/* read final block flag */
bfinal = tinf_getbit(&d);
/* read block type (2 bits) */
btype = tinf_read_bits(&d, 2, 0);
/* decompress block */
if(btype == swapped_btype[0]) {
/* decompress uncompressed block */
res = tinf_inflate_uncompressed_block(&d);
} else if(btype == swapped_btype[1]) {
/* decompress block with fixed huffman trees */
res = tinf_inflate_fixed_block(&d);
} else if(btype == swapped_btype[2]) {
/* decompress block with dynamic huffman trees */
res = tinf_inflate_dynamic_block(&d);
} else {
return TINF_DATA_ERROR;
}
if (res != TINF_OK) return TINF_DATA_ERROR;
} while (!bfinal);
return TINF_OK;
}
/* inflate stream from source to dest */
int tinf_uncompress(void *dest, unsigned int *destLen,
const void *source, unsigned int sourceLen)
{
TINF_DATA d;
int bfinal;
/* initialise data */
d.source = (const unsigned char *)source;
d.bitcount = 0;
d.dest = (unsigned char *)dest;
d.destLen = destLen;
*destLen = 0;
do {
unsigned int btype;
int res;
/* read block type (2 bits) */
btype = tinf_read_bits(&d, 3, 0);
/* read final block flag */
bfinal = tinf_getbit(&d);
/* decompress block */
switch (btype)
{
case 7:
/* decompress uncompressed block */
res = tinf_inflate_uncompressed_block(&d);
break;
case 5:
/* decompress block with fixed huffman trees */
res = tinf_inflate_fixed_block(&d);
break;
case 6:
/* decompress block with dynamic huffman trees */
res = tinf_inflate_dynamic_block(&d);
break;
default:
return -1;
}
if (res != TINF_OK) return -1;
} while (!bfinal);
return ((char*)d.source - (char *)source);
}
