void
Compress(const std::vector<T>& data, BufferT& out)
{
ssize_t countBS = sizeof(T)*data.size();
out.resize(snappy::MaxCompressedLength(countBS));
size_t output_length=0;
snappy::RawCompress(reinterpret_cast<const char*>(&data[0]),
countBS,
&out[0],
&output_length);
out.resize(output_length);
}
void
Compress(const std::vector<T>& data, BufferT& out)
{
ssize_t countBS = sizeof(T)*data.size();
// allocate as much memory as we need
int maxOut = LZ4_compressBound(countBS);
out.resize(maxOut);
int r = LZ4_compress((const char*)&data.front(), (char*)&out.front(), countBS);
if(r == 0) {
Util::fire_exception("lz4 compression failed");
}
// trim to really used size
out.resize(r);
}
void
Compress(const std::vector<T>& data, BufferT& out)
{
ssize_t countBS = sizeof(T)*data.size();
lzo_uint outLen=(countBS + countBS / 16 + 64 + 3); // from simple.c in LZO distrib
// allocate as much memory as we need
out.resize(outLen);
int32_t r = lzo1x_999_compress(
reinterpret_cast<const lzo_bytep>(&data.front()),
countBS,
&out.front(),
&outLen,
&lzoTemp[0]);
if (r != LZO_E_OK) {
Util::fire_exception("lzo compression failed");
}
// trim to really used size
out.resize(outLen);
}