src/gallium/state_trackers/nine/nine_pdata.h

   1
   2 #ifndef _NINE_PDATA_H_
   3 #define _NINE_PDATA_H_
   4
   5 struct pheader
   6 {
   7     boolean unknown;
   8     GUID guid;
   9     DWORD size;
  10 };
  11
  12 static bool
  13 ht_guid_compare( const void *a,
  14                  const void *b )
  15 {
  16     return GUID_equal(a, b);
  17 }
  18
  19 static uint32_t
  20 ht_guid_hash( const void *key )
  21 {
  22     unsigned i, hash = 0;
  23     const unsigned char *str = key;
  24
  25     for (i = 0; i < sizeof(GUID); i++) {
  26         hash = (unsigned)(str[i]) + (hash << 6) + (hash << 16) - hash;
  27     }
  28
  29     return hash;
  30 }
  31
  32 static enum pipe_error
  33 ht_guid_delete( void *key,
  34                 void *value,
  35                 void *data )
  36 {
  37     struct pheader *header = value;
  38     void *header_data = (void *)header + sizeof(*header);
  39
  40     if (header->unknown) { IUnknown_Release(*(IUnknown **)header_data); }
  41     FREE(header);
  42
  43     return PIPE_OK;
  44 }
  45
  46 #endif /* _NINE_PDATA_H_ */