/* Decompresses 'size' bytes from 'data'. Returns the address of a
malloc'd buffer containing the decompressed data and its size in
'*out_sizep'.
In case of error, returns 0 and does not modify '*out_sizep'.
*/
uint8_t * bbdecompress( const uint8_t * const data, const int size, uint8_t * new_data,
int * const out_sizep )
{
struct LZ_Decoder * const decoder = LZ_decompress_open();
if( !decoder || LZ_decompress_errno( decoder ) != LZ_ok )
{ LZ_decompress_close( decoder ); return 0; }
const int delta_size = size; /* size must be > zero */
int new_data_size = delta_size; /* initial size */
//uint8_t * new_data = (uint8_t *)malloc( new_data_size );
//if( !new_data )
// { LZ_decompress_close( decoder ); return 0; }
int new_pos = 0;
int written = 0;
bool error = false;
while( true )
{
if( LZ_decompress_write_size( decoder ) > 0 )
{
if( written < size )
{
const int wr = LZ_decompress_write( decoder, data + written,
size - written );
if( wr < 0 ) { error = true; break; }
written += wr;
}
if( written >= size ) LZ_decompress_finish( decoder );
}
const int rd = LZ_decompress_read( decoder, new_data + new_pos,
new_data_size - new_pos );
if( rd < 0 ) { error = true; break; }
new_pos += rd;
if( LZ_decompress_finished( decoder ) == 1 ) break;
/*if( new_pos >= new_data_size )
{
uint8_t * const tmp =
(uint8_t *)realloc( new_data, new_data_size + delta_size );
if( !tmp ) { error = true; break; }
new_data = tmp;
new_data_size += delta_size;
}*/
}
if( LZ_decompress_close( decoder ) < 0 ) error = true;
if( error ) { /*free( new_data );*/ return 0; }
*out_sizep = new_pos;
return new_data;
}
int64_t lzbench_lzlib_decompress(char *inbuf, size_t insize, char *outbuf, size_t outsize, size_t, size_t, char*)
{
struct LZ_Decoder * const decoder = LZ_decompress_open();
uint8_t * new_data = (uint8_t*)outbuf;
int new_data_size = outsize; /* initial size */
int new_pos = 0;
int written = 0;
bool error = false;
uint8_t *data = (uint8_t*)inbuf;
if( !decoder || LZ_decompress_errno( decoder ) != LZ_ok )
{ LZ_decompress_close( decoder ); return 0; }
while( true )
{
int rd;
if( LZ_decompress_write_size( decoder ) > 0 )
{
if( written < insize )
{
const int wr = LZ_decompress_write( decoder, data + written, insize - written );
// printf("write=%d written=%d left=%d\n", wr, written, insize - written);
if( wr < 0 ) { error = true; break; }
written += wr;
}
if( written >= insize ) LZ_decompress_finish( decoder );
}
rd = LZ_decompress_read( decoder, new_data + new_pos, new_data_size - new_pos );
// printf("read=%d new_pos=%d\n", rd, new_pos);
if( rd < 0 ) { error = true; break; }
new_pos += rd;
if( LZ_decompress_finished( decoder ) == 1 ) break;
}
if( LZ_decompress_close( decoder ) < 0 ) error = true;
return new_pos;
}