shared_data xcc_z::gzip(data_ref s)
{
unsigned long cb_d = s.size() + (s.size() + 999) / 1000 + 12;
shared_data d(10 + cb_d + 8);
unsigned char* w = d.data();
*w++ = 0x1f;
*w++ = 0x8b;
*w++ = Z_DEFLATED;
*w++ = 0;
*w++ = 0;
*w++ = 0;
*w++ = 0;
*w++ = 0;
*w++ = 0;
*w++ = 3;
{
z_stream stream;
stream.zalloc = NULL;
stream.zfree = NULL;
stream.opaque = NULL;
deflateInit2(&stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -MAX_WBITS, MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY);
stream.next_in = const_cast<unsigned char*>(s.begin());
stream.avail_in = s.size();
stream.next_out = w;
stream.avail_out = cb_d;
deflate(&stream, Z_FINISH);
deflateEnd(&stream);
w = stream.next_out;
}
w = write_int_le(4, w, crc32(crc32(0, NULL, 0), s.data(), s.size()));
w = write_int_le(4, w, s.size());
return d.substr(0, w - d.data());
}
void SER_Recorder::write_long_int_le(uint64_t *i)
{
if (is_little_endian())
{
fwrite((const void *)((uint32_t *)i), sizeof(int), 1, f);
fwrite((const void *)((uint32_t *)(i) + 1), sizeof(int), 1, f);
}
else
{
write_int_le((uint32_t *)(i) + 1);
write_int_le((uint32_t *)(i));
}
}
void Cxif_value::save(byte*& data) const
{
*data++ = m_type;
switch (m_type)
{
case vt_bin32:
case vt_int32:
data = write_int_le(4, data, get_int());
break;
case vt_float:
data = write_float(data, get_float());
break;
default:
{
int size = get_size();
data = write_int_le(4, data, size);
memcpy(data, get_data(), size);
data += size;
}
}
}
void SER_Recorder::write_header(ser_header *s)
{
fwrite((const void *)(s->FileID), sizeof(char), 14, f);
write_int_le(&(s->LuID));
write_int_le(&(s->ColorID));
write_int_le(&(s->LittleEndian));
write_int_le(&(s->ImageWidth));
write_int_le(&(s->ImageHeight));
write_int_le(&(s->PixelDepth));
write_int_le(&(s->FrameCount));
fwrite((const void *)(s->Observer), sizeof(char), 40, f);
fwrite((const void *)(s->Instrume), sizeof(char), 40, f);
fwrite((const void *)(s->Telescope), sizeof(char), 40, f);
write_long_int_le(&(s->DateTime));
write_long_int_le(&(s->DateTime_UTC));
}
