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Added dircache support to playlist. Now playlist filename pointers are

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automatically accuired from dircache. WPS UI response with dircache
enabled should be instant.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7931 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Miika Pekkarinen 2005-11-17 19:31:29 +00:00
parent bc8a4e4b8c
commit 735f453730
8 changed files with 336 additions and 75 deletions
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41
firmware/common/dircache.c
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@ -77,6 +77,7 @@ static struct dircache_entry* allocate_entry(void)
dircache_size += sizeof(struct dircache_entry);
next_entry->name_len = 0;
next_entry->d_name = NULL;
next_entry->up = NULL;
next_entry->down = NULL;
next_entry->next = NULL;
@ -88,6 +89,7 @@ static struct dircache_entry* dircache_gen_next(struct dircache_entry *ce)
struct dircache_entry *next_entry;
next_entry = allocate_entry();
next_entry->up = ce->up;
ce->next = next_entry;
return next_entry;
@ -98,6 +100,7 @@ static struct dircache_entry* dircache_gen_down(struct dircache_entry *ce)
struct dircache_entry *next_entry;
next_entry = allocate_entry();
next_entry->up = ce;
ce->down = next_entry;
return next_entry;
@ -176,6 +179,7 @@ static int dircache_travel(struct fat_dir *dir, struct dircache_entry *ce)
int depth = 0;
int result;
memset(ce, 0, sizeof(struct dircache_entry));
dir_recursion[0].dir = dir;
dir_recursion[0].ce = ce;
@ -517,6 +521,43 @@ void dircache_disable(void)
logf("Cache released");
}
const struct dircache_entry *dircache_get_entry_ptr(const char *filename)
{
if (!dircache_initialized || filename == NULL)
return NULL;
return dircache_get_entry(filename, false, false);
}
void dircache_copy_path(const struct dircache_entry *entry, char *buf, int size)
{
const struct dircache_entry *down[MAX_SCAN_DEPTH];
int depth = 0;
if (size <= 0)
return ;
buf[0] = '\0';
if (entry == NULL)
return ;
do {
down[depth] = entry;
entry = entry->up;
depth++;
} while (entry != NULL && depth < MAX_SCAN_DEPTH);
while (--depth >= 0)
{
snprintf(buf, size, "/%s", down[depth]->d_name);
buf += down[depth]->name_len; /* '/' + d_name */
size -= down[depth]->name_len;
if (size <= 0)
break ;
}
}
/* --- Directory cache live updating functions --- */
static struct dircache_entry* dircache_new_entry(const char *path, int attribute)
{