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Add daap_songalbumid() to generate the songalbumid hash 

Make it an inline function as it's a short function and has only got
2 call sites.
This commit is contained in:
Ace Jones 2010-01-04 17:59:21 +01:00 committed by Julien BLACHE
parent 8ef57bbb41
commit 19a244095a
1 changed files with 26 additions and 0 deletions
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26
src/daap_query.h
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@ -4,6 +4,9 @@
#include <stdint.h> #include <stdint.h>
#include "logger.h"
#include "misc.h"
struct dmap_query_field_map { struct dmap_query_field_map {
uint32_t hash; uint32_t hash;
int as_int; int as_int;
@ -24,4 +27,27 @@ daap_query_init(void);
void void
daap_query_deinit(void); daap_query_deinit(void);
static inline int64_t
daap_songalbumid(const char *album_artist, const char *album)
{
/* album_artist & album are both VARCHAR(1024) + 2 chars + NUL */
char hashbuf[2052];
uint64_t hash;
int ret;
ret = snprintf(hashbuf, sizeof(hashbuf), "%s==%s", (album_artist) ? album_artist : "", (album) ? album : "");
if ((ret < 0) || (ret >= sizeof(hashbuf)))
{
DPRINTF(E_WARN, L_DAAP, "Not enough room for album_artist==album concatenation\n");
return 0;
}
/* Limit hash length to 63 bits, due to signed type in sqlite */
hash = murmur_hash64(hashbuf, ret, 0);
return hash >> 1;
}
#endif /* !__DAAP_QUERY_H__ */ #endif /* !__DAAP_QUERY_H__ */