/src/libtomahawk/thirdparty/quazip/quazip/quacrc32.cpp

http://github.com/tomahawk-player/tomahawk · C++ · 28 lines · 22 code · 6 blank · 0 comment · 0 complexity · dd3c0d3b42a2248a68c2ac918d222c0c MD5 · raw file

  1. #include "quacrc32.h"
  2. #include "zlib.h"
  3. QuaCrc32::QuaCrc32()
  4. {
  5. reset();
  6. }
  7. quint32 QuaCrc32::calculate(const QByteArray &data)
  8. {
  9. return crc32( crc32(0L, Z_NULL, 0), (const Bytef*)data.data(), data.size() );
  10. }
  11. void QuaCrc32::reset()
  12. {
  13. checksum = crc32(0L, Z_NULL, 0);
  14. }
  15. void QuaCrc32::update(const QByteArray &buf)
  16. {
  17. checksum = crc32( checksum, (const Bytef*)buf.data(), buf.size() );
  18. }
  19. quint32 QuaCrc32::value()
  20. {
  21. return checksum;
  22. }