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rockbox/apps/tagcache.c
Miika Pekkarinen d6af04ba91 Load uniqued tags correctly at commit (should fix duplicates). Try 
first dircache buffer as it's usually bigger.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10003 a1c6a512-1295-4272-9138-f99709370657
2006-05-28 09:59:24 +00:00

2518 lines
64 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Miika Pekkarinen
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include "thread.h"
#include "kernel.h"
#include "system.h"
#include "logf.h"
#include "string.h"
#include "usb.h"
#include "dircache.h"
#include "metadata.h"
#include "id3.h"
#include "settings.h"
#include "splash.h"
#include "lang.h"
#include "tagcache.h"
#include "buffer.h"
#include "atoi.h"
#include "crc32.h"
/* Tag Cache thread. */
static struct event_queue tagcache_queue;
static long tagcache_stack[(DEFAULT_STACK_SIZE + 0x4000)/sizeof(long)];
static const char tagcache_thread_name[] = "tagcache";
/* Previous path when scanning directory tree recursively. */
static char curpath[MAX_PATH*2];
static long curpath_size = sizeof(curpath);
/* Used when removing duplicates. */
static char *tempbuf; /* Allocated when needed. */
static long tempbufidx; /* Current location in buffer. */
static long tempbuf_size; /* Buffer size (TEMPBUF_SIZE). */
static long tempbuf_left; /* Buffer space left. */
static long tempbuf_pos;
/* Tags we want to get sorted (loaded to the tempbuf). */
static const int sorted_tags[] = { tag_artist, tag_album, tag_genre, tag_composer, tag_title };
/* Uniqued tags (we can use these tags with filters and conditional clauses). */
static const int unique_tags[] = { tag_artist, tag_album, tag_genre, tag_composer };
/* Numeric tags (we can use these tags with conditional clauses). */
static const int numeric_tags[] = { tag_year, tag_tracknumber, tag_length, tag_bitrate };
/* Status information of the tagcache. */
static struct tagcache_stat stat;
/* Queue commands. */
enum tagcache_queue {
Q_STOP_SCAN = 0,
Q_START_SCAN,
Q_FORCE_UPDATE,
};
/* Tag database structures. */
/* Variable-length tag entry in tag files. */
struct tagfile_entry {
short tag_length;
short idx_id;
char tag_data[0];
};
/* Fixed-size tag entry in master db index. */
struct index_entry {
long tag_seek[TAG_COUNT];
long flag;
};
/* Header is the same in every file. */
struct tagcache_header {
long magic;
long datasize;
long entry_count;
};
#ifdef HAVE_TC_RAMCACHE
/* Header is created when loading database to ram. */
struct ramcache_header {
struct tagcache_header h;
struct index_entry *indices;
char *tags[TAG_COUNT];
int entry_count[TAG_COUNT];
};
static struct ramcache_header *hdr;
#endif
/**
* Full tag entries stored in a temporary file waiting
* for commit to the cache. */
struct temp_file_entry {
long tag_offset[TAG_COUNT];
short tag_length[TAG_COUNT];
long data_length;
};
struct tempbuf_id_list {
long id;
struct tempbuf_id_list *next;
};
struct tempbuf_searchidx {
long idx_id;
char *str;
int seek;
struct tempbuf_id_list idlist;
};
#define LOOKUP_BUF_DEPTH (TAGFILE_MAX_ENTRIES*2 \
* (TAGFILE_ENTRY_AVG_LENGTH/TAGFILE_ENTRY_CHUNK_LENGTH))
struct tempbuf_searchidx **lookup;
/* Used when building the temporary file. */
static int cachefd = -1, filenametag_fd;
static int total_entry_count = 0;
static int data_size = 0;
static int processed_dir_count;
bool tagcache_is_numeric_tag(int type)
{
int i;
for (i = 0; i < (int)(sizeof(numeric_tags)/sizeof(numeric_tags[0])); i++)
{
if (type == numeric_tags[i])
return true;
}
return false;
}
bool tagcache_is_unique_tag(int type)
{
int i;
for (i = 0; i < (int)(sizeof(unique_tags)/sizeof(unique_tags[0])); i++)
{
if (type == unique_tags[i])
return true;
}
return false;
}
bool tagcache_is_sorted_tag(int type)
{
int i;
for (i = 0; i < (int)(sizeof(sorted_tags)/sizeof(sorted_tags[0])); i++)
{
if (type == sorted_tags[i])
return true;
}
return false;
}
#ifdef HAVE_TC_RAMCACHE
static struct index_entry *find_entry_ram(const char *filename,
const struct dircache_entry *dc)
{
static long last_pos = 0;
int counter = 0;
int i;
/* Check if we tagcache is loaded into ram. */
if (!stat.ramcache)
return NULL;
if (dc == NULL)
dc = dircache_get_entry_ptr(filename);
if (dc == NULL)
{
logf("tagcache: file not found.");
return NULL;
}
try_again:
if (last_pos > 0)
i = last_pos;
else
i = 0;
for (; i < hdr->h.entry_count; i++)
{
if (hdr->indices[i].tag_seek[tag_filename] == (long)dc)
{
last_pos = MAX(0, i - 3);
return &hdr->indices[i];
}
if (++counter == 100)
{
yield();
counter = 0;
}
}
if (last_pos > 0)
{
last_pos = 0;
goto try_again;
}
return NULL;
}
#endif
static struct index_entry *find_entry_disk(const char *filename, bool retrieve)
{
static struct index_entry idx;
static long last_pos = -1;
long pos_history[POS_HISTORY_COUNT];
long pos_history_idx = 0;
struct tagcache_header tch;
bool found = false;
struct tagfile_entry tfe;
int masterfd, fd = filenametag_fd;
char buf[MAX_PATH];
int i;
int pos = -1;
if (fd < 0)
{
last_pos = -1;
return NULL;
}
check_again:
if (last_pos > 0)
lseek(fd, last_pos, SEEK_SET);
else
lseek(fd, sizeof(struct tagcache_header), SEEK_SET);
while (true)
{
pos = lseek(fd, 0, SEEK_CUR);
for (i = pos_history_idx-1; i >= 0; i--)
pos_history[i+1] = pos_history[i];
pos_history[0] = pos;
if (read(fd, &tfe, sizeof(struct tagfile_entry)) !=
sizeof(struct tagfile_entry))
{
break ;
}
if (tfe.tag_length >= (long)sizeof(buf))
{
logf("too long tag");
close(fd);
last_pos = -1;
return NULL;
}
if (read(fd, buf, tfe.tag_length) != tfe.tag_length)
{
logf("read error #2");
close(fd);
last_pos = -1;
return NULL;
}
if (!strcasecmp(filename, buf))
{
last_pos = pos_history[pos_history_idx];
found = true;
break ;
}
if (pos_history_idx < POS_HISTORY_COUNT - 1)
pos_history_idx++;
}
/* Not found? */
if (!found)
{
if (last_pos > 0)
{
last_pos = -1;
logf("seek again");
goto check_again;
}
//close(fd);
return NULL;
}
if (!retrieve)
{
/* Just return a valid pointer without a valid entry. */
return &idx;
}
/* Found. Now read the index_entry (if requested). */
masterfd = open(TAGCACHE_FILE_MASTER, O_RDONLY);
if (masterfd < 0)
{
logf("open fail");
return NULL;
}
if (read(fd, &tch, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || tch.magic != TAGCACHE_MAGIC)
{
logf("header error");
return NULL;
}
for (i = 0; i < tch.entry_count; i++)
{
if (read(masterfd, &idx, sizeof(struct index_entry)) !=
sizeof(struct index_entry))
{
logf("read error #3");
close(fd);
return NULL;
}
if (idx.tag_seek[tag_filename] == pos)
break ;
}
close(masterfd);
/* Not found? */
if (i == tch.entry_count)
{
logf("not found!");
return NULL;
}
return &idx;
}
static long tagcache_get_seek(const struct tagcache_search *tcs,
int tag, int idxid)
{
struct index_entry idx;
#ifdef HAVE_TC_RAMCACHE
if (tcs->ramsearch)
{
if (hdr->indices[idxid].flag & FLAG_DELETED)
return false;
return hdr->indices[idxid].tag_seek[tag];
}
#endif
lseek(tcs->masterfd, idxid * sizeof(struct index_entry)
+ sizeof(struct tagcache_header), SEEK_SET);
if (read(tcs->masterfd, &idx, sizeof(struct index_entry)) !=
sizeof(struct index_entry))
{
logf("read error #3");
return -4;
}
return idx.tag_seek[tag];
}
long tagcache_get_numeric(const struct tagcache_search *tcs, int tag)
{
if (!tagcache_is_numeric_tag(tag))
return -1;
return tagcache_get_seek(tcs, tag, tcs->idx_id);
}
static bool check_against_clause(long numeric, const char *str,
const struct tagcache_search_clause *clause)
{
switch (clause->type)
{
case clause_is:
if (clause->numeric)
return numeric == clause->numeric_data;
else
return !strcasecmp(clause->str, str);
case clause_gt:
return numeric > clause->numeric_data;
case clause_gteq:
return numeric >= clause->numeric_data;
case clause_lt:
return numeric < clause->numeric_data;
case clause_lteq:
return numeric <= clause->numeric_data;
case clause_contains:
return (strcasestr(str, clause->str) != NULL);
case clause_begins_with:
return (strcasestr(str, clause->str) == str);
case clause_ends_with: /* Not supported yet */
return false;
}
return false;
}
static bool build_lookup_list(struct tagcache_search *tcs)
{
struct index_entry entry;
int i;
tcs->seek_list_count = 0;
#ifdef HAVE_TC_RAMCACHE
if (tcs->ramsearch)
{
int j;
for (i = tcs->seek_pos; i < hdr->h.entry_count; i++)
{
if (tcs->seek_list_count == SEEK_LIST_SIZE)
break ;
/* Skip deleted files. */
if (hdr->indices[i].flag & FLAG_DELETED)
continue;
/* Go through all filters.. */
for (j = 0; j < tcs->filter_count; j++)
{
if (hdr->indices[i].tag_seek[tcs->filter_tag[j]] !=
tcs->filter_seek[j])
break ;
}
if (j < tcs->filter_count)
continue ;
/* Go through all conditional clauses. */
for (j = 0; j < tcs->clause_count; j++)
{
int seek = hdr->indices[i].tag_seek[tcs->clause[j]->tag];
char *str = NULL;
struct tagfile_entry *entry;
if (!tagcache_is_numeric_tag(tcs->clause[j]->tag))
{
entry = (struct tagfile_entry *)&hdr->tags[tcs->clause[j]->tag][seek];
str = entry->tag_data;
}
if (!check_against_clause(seek, str, tcs->clause[j]))
break ;
}
if (j < tcs->clause_count)
continue ;
/* Add to the seek list if not already there. */
for (j = 0; j < tcs->seek_list_count; j++)
{
if (tcs->seek_list[j] == hdr->indices[i].tag_seek[tcs->type])
break ;
}
/* Lets add it. */
if (j == tcs->seek_list_count)
{
tcs->seek_list[tcs->seek_list_count] =
hdr->indices[i].tag_seek[tcs->type];
tcs->seek_list_count++;
}
}
tcs->seek_pos = i;
return tcs->seek_list_count > 0;
}
#endif
lseek(tcs->masterfd, tcs->seek_pos * sizeof(struct index_entry) +
sizeof(struct tagcache_header), SEEK_SET);
while (read(tcs->masterfd, &entry, sizeof(struct index_entry)) ==
sizeof(struct index_entry))
{
if (tcs->seek_list_count == SEEK_LIST_SIZE)
break ;
/* Go through all filters.. */
for (i = 0; i < tcs->filter_count; i++)
{
if (entry.tag_seek[tcs->filter_tag[i]] != tcs->filter_seek[i])
break ;
}
tcs->seek_pos++;
if (i < tcs->filter_count)
continue ;
/* Check for conditions. */
for (i = 0; i < tcs->clause_count; i++)
{
struct tagfile_entry tfe;
int seek = entry.tag_seek[tcs->clause[i]->tag];
char str[256];
memset(str, 0, sizeof str);
if (!tagcache_is_numeric_tag(tcs->clause[i]->tag))
{
int fd = tcs->idxfd[tcs->clause[i]->tag];
lseek(fd, seek, SEEK_SET);
read(fd, &tfe, sizeof(struct tagfile_entry));
if (tfe.tag_length >= (int)sizeof(str))
{
logf("Too long tag read!");
break ;
}
read(fd, str, tfe.tag_length);
}
if (!check_against_clause(seek, str, tcs->clause[i]))
break ;
}
if (i < tcs->clause_count)
continue ;
/* Add to the seek list if not already there. */
for (i = 0; i < tcs->seek_list_count; i++)
{
if (tcs->seek_list[i] == entry.tag_seek[tcs->type])
break ;
}
/* Lets add it. */
if (i == tcs->seek_list_count)
{
tcs->seek_list[tcs->seek_list_count] =
entry.tag_seek[tcs->type];
tcs->seek_list_count++;
}
}
return tcs->seek_list_count > 0;
}
bool tagcache_search(struct tagcache_search *tcs, int tag)
{
struct tagcache_header h;
char buf[MAX_PATH];
int i;
if (tcs->valid)
tagcache_search_finish(tcs);
memset(tcs, 0, sizeof(struct tagcache_search));
if (stat.commit_step > 0)
return false;
tcs->position = sizeof(struct tagcache_header);
tcs->fd = -1;
tcs->type = tag;
tcs->seek_pos = 0;
tcs->seek_list_count = 0;
tcs->filter_count = 0;
tcs->valid = true;
tcs->masterfd = -1;
for (i = 0; i < TAG_COUNT; i++)
tcs->idxfd[i] = -1;
#ifndef HAVE_TC_RAMCACHE
tcs->ramsearch = false;
#else
tcs->ramsearch = stat.ramcache;
if (tcs->ramsearch)
{
tcs->entry_count = hdr->entry_count[tcs->type];
}
else
#endif
{
if (tagcache_is_numeric_tag(tcs->type))
return true;
snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, tcs->type);
tcs->fd = open(buf, O_RDONLY);
if (tcs->fd < 0)
{
logf("failed to open index");
return false;
}
tcs->idxfd[tcs->type] = tcs->fd;
/* Check the header. */
if (read(tcs->fd, &h, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || h.magic != TAGCACHE_MAGIC)
{
logf("incorrect header");
return false;
}
tcs->masterfd = open(TAGCACHE_FILE_MASTER, O_RDONLY);
if (tcs->masterfd < 0)
{
logf("open fail");
return false;
}
if (read(tcs->masterfd, &h, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || h.magic != TAGCACHE_MAGIC)
{
logf("header error");
close(tcs->masterfd);
tcs->masterfd = -1;
return false;
}
}
return true;
}
bool tagcache_search_add_filter(struct tagcache_search *tcs,
int tag, int seek)
{
if (tcs->filter_count == TAGCACHE_MAX_FILTERS)
return false;
if (!tagcache_is_unique_tag(tag) || tagcache_is_numeric_tag(tag))
return false;
tcs->filter_tag[tcs->filter_count] = tag;
tcs->filter_seek[tcs->filter_count] = seek;
tcs->filter_count++;
return true;
}
bool tagcache_search_add_clause(struct tagcache_search *tcs,
struct tagcache_search_clause *clause)
{
if (tcs->clause_count >= TAGCACHE_MAX_CLAUSES)
{
logf("Too many clauses");
return false;
}
if (!tagcache_is_numeric_tag(clause->tag) && tcs->idxfd[clause->tag] < 0)
{
char buf[MAX_PATH];
snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, clause->tag);
tcs->idxfd[clause->tag] = open(buf, O_RDONLY);
}
tcs->clause[tcs->clause_count] = clause;
tcs->clause_count++;
return true;
}
bool tagcache_get_next(struct tagcache_search *tcs)
{
static char buf[MAX_PATH];
struct tagfile_entry entry;
if (!tcs->valid)
return false;
if (tcs->fd < 0 && !tagcache_is_numeric_tag(tcs->type)
#ifdef HAVE_TC_RAMCACHE
&& !tcs->ramsearch
#endif
)
return false;
/* Searching not supported for numeric tags yet. */
if (tagcache_is_numeric_tag(tcs->type))
return false;
/* Relative fetch. */
if (tcs->filter_count > 0 || tcs->clause_count > 0)
{
/* Check for end of list. */
if (tcs->seek_list_count == 0)
{
/* Try to fetch more. */
if (!build_lookup_list(tcs))
return false;
}
tcs->seek_list_count--;
/* Seek stream to the correct position and continue to direct fetch. */
if (!tcs->ramsearch)
lseek(tcs->fd, tcs->seek_list[tcs->seek_list_count], SEEK_SET);
else
tcs->position = tcs->seek_list[tcs->seek_list_count];
}
/* Direct fetch. */
#ifdef HAVE_TC_RAMCACHE
if (tcs->ramsearch)
{
struct tagfile_entry *ep;
if (tcs->entry_count == 0)
{
tcs->valid = false;
return false;
}
tcs->entry_count--;
tcs->result_seek = tcs->position;
if (tcs->type == tag_filename)
{
dircache_copy_path((struct dircache_entry *)tcs->position,
buf, sizeof buf);
tcs->result = buf;
tcs->result_len = strlen(buf) + 1;
return true;
}
ep = (struct tagfile_entry *)&hdr->tags[tcs->type][tcs->position];
tcs->position += sizeof(struct tagfile_entry) + ep->tag_length;
tcs->result = ep->tag_data;
tcs->result_len = ep->tag_length;
tcs->idx_id = ep->idx_id;
if (!tagcache_is_unique_tag(tcs->type))
tcs->result_seek = tcs->idx_id;
return true;
}
else
#endif
{
tcs->result_seek = lseek(tcs->fd, 0, SEEK_CUR);
if (read(tcs->fd, &entry, sizeof(struct tagfile_entry)) !=
sizeof(struct tagfile_entry))
{
/* End of data. */
tcs->valid = false;
return false;
}
}
if (entry.tag_length > (long)sizeof(buf))
{
tcs->valid = false;
logf("too long tag");
return false;
}
if (read(tcs->fd, buf, entry.tag_length) != entry.tag_length)
{
tcs->valid = false;
logf("read error");
return false;
}
tcs->result = buf;
tcs->result_len = entry.tag_length;
tcs->idx_id = entry.idx_id;
if (!tagcache_is_unique_tag(tcs->type))
tcs->result_seek = tcs->idx_id;
return true;
}
bool tagcache_retrieve(struct tagcache_search *tcs, int idxid,
char *buf, long size)
{
struct tagfile_entry tfe;
long seek;
seek = tagcache_get_seek(tcs, tcs->type, idxid);
if (seek < 0)
{
logf("Retrieve failed");
return false;
}
#ifdef HAVE_TC_RAMCACHE
if (tcs->ramsearch)
{
if (tcs->type == tag_filename)
{
dircache_copy_path((struct dircache_entry *)seek,
buf, size);
}
else
{
struct tagfile_entry *ep;
ep = (struct tagfile_entry *)&hdr->tags[tcs->type][seek];
strncpy(buf, ep->tag_data, size-1);
}
return true;
}
#endif
if (tcs->idxfd[tcs->type] < 0)
{
char fn[MAX_PATH];
snprintf(fn, sizeof fn, TAGCACHE_FILE_INDEX, tcs->type);
tcs->idxfd[tcs->type] = open(fn, O_RDONLY);
}
if (tcs->idxfd[tcs->type] < 0)
{
logf("File not open!");
return false;
}
lseek(tcs->idxfd[tcs->type], seek, SEEK_SET);
if (read(tcs->idxfd[tcs->type], &tfe, sizeof(struct tagfile_entry)) !=
sizeof(struct tagfile_entry))
{
logf("read error");
return false;
}
if (tfe.tag_length >= size)
{
logf("too small buffer");
return false;
}
if (read(tcs->idxfd[tcs->type], buf, tfe.tag_length) !=
tfe.tag_length)
{
logf("read error #2");
return false;
}
buf[tfe.tag_length] = '\0';
return true;
}
#if 0
static bool tagcache_delete(const char *filename)
{
struct index_entry *entry;
entry = find_entry_disk(filename, true);
if (entry == NULL)
{
logf("not found: %s", filename);
return false;
}
}
void tagcache_modify(struct tagcache_search *tcs, int type, const char *text)
{
struct tagentry *entry;
if (tcs->type != tag_title)
return ;
/* We will need reserve buffer for this. */
if (tcs->ramcache)
{
struct tagfile_entry *ep;
ep = (struct tagfile_entry *)&hdr->tags[tcs->type][tcs->result_seek];
tcs->seek_list[tcs->seek_list_count];
}
entry = find_entry_ram(
}
#endif
void tagcache_search_finish(struct tagcache_search *tcs)
{
int i;
if (tcs->fd >= 0)
{
close(tcs->fd);
tcs->fd = -1;
tcs->idxfd[tcs->type] = -1;
}
if (tcs->masterfd >= 0)
{
close(tcs->masterfd);
tcs->masterfd = -1;
}
for (i = 0; i < TAG_COUNT; i++)
{
if (tcs->idxfd[i] >= 0)
{
close(tcs->idxfd[i]);
tcs->idxfd[i] = -1;
}
}
tcs->ramsearch = false;
tcs->valid = false;
}
#ifdef HAVE_TC_RAMCACHE
static struct tagfile_entry *get_tag(const struct index_entry *entry, int tag)
{
return (struct tagfile_entry *)&hdr->tags[tag][entry->tag_seek[tag]];
}
static long get_tag_numeric(const struct index_entry *entry, int tag)
{
return entry->tag_seek[tag];
}
bool tagcache_fill_tags(struct mp3entry *id3, const char *filename)
{
struct index_entry *entry;
/* Find the corresponding entry in tagcache. */
entry = find_entry_ram(filename, NULL);
if (entry == NULL || !stat.ramcache)
return false;
id3->title = get_tag(entry, tag_title)->tag_data;
id3->artist = get_tag(entry, tag_artist)->tag_data;
id3->album = get_tag(entry, tag_album)->tag_data;
id3->genre_string = get_tag(entry, tag_genre)->tag_data;
id3->composer = get_tag(entry, tag_composer)->tag_data;
id3->year = get_tag_numeric(entry, tag_year);
id3->tracknum = get_tag_numeric(entry, tag_tracknumber);
id3->bitrate = get_tag_numeric(entry, tag_bitrate);
if (id3->bitrate == 0)
id3->bitrate = 1;
return true;
}
#endif
static inline void write_item(const char *item)
{
int len = strlen(item) + 1;
data_size += len;
write(cachefd, item, len);
}
inline void check_if_empty(char **tag)
{
if (tag == NULL || *tag == NULL || *tag[0] == '\0')
*tag = "<Untagged>";
}
#define CRC_BUF_LEN 8
#ifdef HAVE_TC_RAMCACHE
static void add_tagcache(const char *path, const struct dircache_entry *dc)
#else
static void add_tagcache(const char *path)
#endif
{
struct track_info track;
struct temp_file_entry entry;
bool ret;
int fd;
char tracknumfix[3];
char *genrestr;
//uint32_t crcbuf[CRC_BUF_LEN];
if (cachefd < 0)
return ;
/* Check if the file is supported. */
if (probe_file_format(path) == AFMT_UNKNOWN)
return ;
/* Check if the file is already cached. */
#ifdef HAVE_TC_RAMCACHE
if (stat.ramcache)
{
if (find_entry_ram(path, dc))
return ;
}
else
#endif
{
if (find_entry_disk(path, false))
return ;
}
fd = open(path, O_RDONLY);
if (fd < 0)
{
logf("open fail: %s", path);
return ;
}
memset(&track, 0, sizeof(struct track_info));
memset(&entry, 0, sizeof(struct temp_file_entry));
memset(&tracknumfix, 0, sizeof(tracknumfix));
ret = get_metadata(&track, fd, path, false);
close(fd);
if (!ret)
return ;
genrestr = id3_get_genre(&track.id3);
check_if_empty(&track.id3.title);
check_if_empty(&track.id3.artist);
check_if_empty(&track.id3.album);
check_if_empty(&genrestr);
check_if_empty(&track.id3.composer);
entry.tag_length[tag_filename] = strlen(path) + 1;
entry.tag_length[tag_title] = strlen(track.id3.title) + 1;
entry.tag_length[tag_artist] = strlen(track.id3.artist) + 1;
entry.tag_length[tag_album] = strlen(track.id3.album) + 1;
entry.tag_length[tag_genre] = strlen(genrestr) + 1;
entry.tag_length[tag_composer] = strlen(track.id3.composer) + 1;
entry.tag_offset[tag_filename] = 0;
entry.tag_offset[tag_title] = entry.tag_offset[tag_filename] + entry.tag_length[tag_filename];
entry.tag_offset[tag_artist] = entry.tag_offset[tag_title] + entry.tag_length[tag_title];
entry.tag_offset[tag_album] = entry.tag_offset[tag_artist] + entry.tag_length[tag_artist];
entry.tag_offset[tag_genre] = entry.tag_offset[tag_album] + entry.tag_length[tag_album];
entry.tag_offset[tag_composer] = entry.tag_offset[tag_genre] + entry.tag_length[tag_genre];
entry.data_length = entry.tag_offset[tag_composer] + entry.tag_length[tag_composer];
/* Numeric tags */
entry.tag_offset[tag_year] = track.id3.year;
entry.tag_offset[tag_tracknumber] = track.id3.tracknum;
entry.tag_offset[tag_length] = track.id3.length;
entry.tag_offset[tag_bitrate] = track.id3.bitrate;
if (entry.tag_offset[tag_tracknumber] <= 0)
{
const char *p = strrchr(path, '.');
if (p == NULL)
p = &path[strlen(path)-1];
while (*p != '/')
{
if (isdigit(*p) && isdigit(*(p-1)))
{
tracknumfix[1] = *p--;
tracknumfix[0] = *p;
break;
}
p--;
}
if (tracknumfix[0] != '\0')
entry.tag_offset[tag_tracknumber] = atoi(tracknumfix);
else
entry.tag_offset[tag_tracknumber] = -1;
}
write(cachefd, &entry, sizeof(struct temp_file_entry));
write_item(path);
write_item(track.id3.title);
write_item(track.id3.artist);
write_item(track.id3.album);
write_item(genrestr);
write_item(track.id3.composer);
total_entry_count++;
}
static void remove_files(void)
{
int i;
char buf[MAX_PATH];
remove(TAGCACHE_FILE_MASTER);
for (i = 0; i < TAG_COUNT; i++)
{
if (tagcache_is_numeric_tag(i))
continue;
snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, i);
remove(buf);
}
}
static bool tempbuf_insert(char *str, int id, int idx_id, bool unique)
{
struct tempbuf_searchidx *index = (struct tempbuf_searchidx *)tempbuf;
int len = strlen(str)+1;
int i;
unsigned crc32;
unsigned *crcbuf = (unsigned *)&tempbuf[tempbuf_size-4];
char buf[MAX_PATH];
for (i = 0; str[i] != '\0' && i < (int)sizeof(buf)-1; i++)
buf[i] = tolower(str[i]);
buf[i] = '\0';
crc32 = crc_32(buf, i, 0xffffffff);
if (unique)
{
/* Check if the crc does not exist -> entry does not exist for sure. */
for (i = 0; i < tempbufidx; i++)
{
if (crcbuf[-i] != crc32)
continue;
if (!strcasecmp(str, index[i].str))
{
if (id >= 0 && id < LOOKUP_BUF_DEPTH)
lookup[id] = &index[i];
return true;
}
}
}
/* Insert to CRC buffer. */
crcbuf[-tempbufidx] = crc32;
tempbuf_left -= 4;
/* Insert it to the buffer. */
tempbuf_left -= len;
if (tempbuf_left - 4 < 0 || tempbufidx >= TAGFILE_MAX_ENTRIES-1)
return false;
if (id >= 0 && id < LOOKUP_BUF_DEPTH)
{
lookup[id] = &index[tempbufidx];
index[tempbufidx].idlist.id = id;
}
else
index[tempbufidx].idlist.id = -1;
index[tempbufidx].idlist.next = NULL;
index[tempbufidx].idx_id = idx_id;
index[tempbufidx].seek = -1;
index[tempbufidx].str = &tempbuf[tempbuf_pos];
memcpy(index[tempbufidx].str, str, len);
tempbuf_pos += len;
tempbufidx++;
return true;
}
static int compare(const void *p1, const void *p2)
{
struct tempbuf_searchidx *e1 = (struct tempbuf_searchidx *)p1;
struct tempbuf_searchidx *e2 = (struct tempbuf_searchidx *)p2;
/*
if (!strncasecmp("the ", e1, 4))
e1 = &e1[4];
if (!strncasecmp("the ", e2, 4))
e2 = &e2[4];
*/
return strncasecmp(e1->str, e2->str, MAX_PATH);
}
static int tempbuf_sort(int fd)
{
struct tempbuf_searchidx *index = (struct tempbuf_searchidx *)tempbuf;
struct tagfile_entry fe;
int i;
int length;
/* Generate reverse lookup entries. */
for (i = 0; i < LOOKUP_BUF_DEPTH; i++)
{
struct tempbuf_id_list *idlist;
if (!lookup[i])
continue;
if (lookup[i]->idlist.id == i)
continue;
idlist = &lookup[i]->idlist;
while (idlist->next != NULL)
idlist = idlist->next;
tempbuf_left -= sizeof(struct tempbuf_id_list);
if (tempbuf_left - 4 < 0)
return -1;
idlist->next = (struct tempbuf_id_list *)&tempbuf[tempbuf_pos];
if (tempbuf_pos & 0x03)
{
tempbuf_pos = (tempbuf_pos & ~0x03) + 0x04;
tempbuf_left -= 3;
idlist->next = (struct tempbuf_id_list *)&tempbuf[tempbuf_pos];
}
tempbuf_pos += sizeof(struct tempbuf_id_list);
idlist = idlist->next;
idlist->id = i;
idlist->next = NULL;
}
qsort(index, tempbufidx, sizeof(struct tempbuf_searchidx), compare);
memset(lookup, 0, LOOKUP_BUF_DEPTH * sizeof(struct tempbuf_searchidx **));
for (i = 0; i < tempbufidx; i++)
{
struct tempbuf_id_list *idlist = &index[i].idlist;
/* Fix the lookup list. */
while (idlist != NULL)
{
if (idlist->id >= 0)
lookup[idlist->id] = &index[i];
idlist = idlist->next;
}
index[i].seek = lseek(fd, 0, SEEK_CUR);
length = strlen(index[i].str) + 1;
fe.tag_length = length;
fe.idx_id = index[i].idx_id;
/* Check the chunk alignment. */
if ((fe.tag_length + sizeof(struct tagfile_entry))
% TAGFILE_ENTRY_CHUNK_LENGTH)
{
fe.tag_length += TAGFILE_ENTRY_CHUNK_LENGTH -
((fe.tag_length + sizeof(struct tagfile_entry))
% TAGFILE_ENTRY_CHUNK_LENGTH);
}
#ifdef TAGCACHE_STRICT_ALIGN
/* Make sure the entry is long aligned. */
if (index[i].seek & 0x03)
{
logf("tempbuf_sort: alignment error!");
return -3;
}
#endif
if (write(fd, &fe, sizeof(struct tagfile_entry)) !=
sizeof(struct tagfile_entry))
{
logf("tempbuf_sort: write error #1");
return -1;
}
if (write(fd, index[i].str, length) != length)
{
logf("tempbuf_sort: write error #2");
return -2;
}
/* Write some padding. */
if (fe.tag_length - length > 0)
write(fd, "XXXXXXXX", fe.tag_length - length);
}
return i;
}
inline static struct tempbuf_searchidx* tempbuf_locate(int id)
{
if (id < 0 || id >= LOOKUP_BUF_DEPTH)
return NULL;
return lookup[id];
}
inline static int tempbuf_find_location(int id)
{
struct tempbuf_searchidx *entry;
entry = tempbuf_locate(id);
if (entry == NULL)
return -1;
return entry->seek;
}
static bool build_numeric_index(int index_type, struct tagcache_header *h, int tmpfd)
{
struct tagcache_header tch;
struct index_entry idx;
int masterfd;
int masterfd_pos;
long *databuf = (long *)tempbuf;
int max_entries;
int i;
max_entries = tempbuf_size / sizeof(long);
if (h->entry_count >= max_entries)
{
logf("not enough space!");
return false;
}
logf("Building numeric index: %d", index_type);
/* Walk through the temporary file. */
lseek(tmpfd, sizeof(struct tagcache_header), SEEK_SET);
for (i = 0; i < h->entry_count; i++)
{
struct temp_file_entry entry;
if (read(tmpfd, &entry, sizeof(struct temp_file_entry)) !=
sizeof(struct temp_file_entry))
{
logf("read fail #1");
return false;
}
/* Insert data in buffer. */
databuf[i] = (long)entry.tag_offset[index_type];
/* Skip to next. */
lseek(tmpfd, entry.data_length, SEEK_CUR);
}
/* Update the entries in index. */
masterfd = open(TAGCACHE_FILE_MASTER, O_RDWR);
if (masterfd < 0)
{
logf("No master file found!");
return false;
}
if (read(masterfd, &tch, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || tch.magic != TAGCACHE_MAGIC)
{
logf("header error");
close(masterfd);
return false;
}
masterfd_pos = lseek(masterfd, tch.entry_count * sizeof(struct index_entry),
SEEK_CUR);
if (masterfd_pos == filesize(masterfd))
{
logf("we can't append!");
close(masterfd);
return false;
}
for (i = 0; i < h->entry_count; i++)
{
int loc = lseek(masterfd, 0, SEEK_CUR);
if (read(masterfd, &idx, sizeof(struct index_entry)) !=
sizeof(struct index_entry))
{
logf("read fail #2");
close(masterfd);
return false;
}
idx.tag_seek[index_type] = databuf[i];
/* Write back the updated index. */
lseek(masterfd, loc, SEEK_SET);
if (write(masterfd, &idx, sizeof(struct index_entry)) !=
sizeof(struct index_entry))
{
logf("write fail");
close(masterfd);
return false;
}
}
close(masterfd);
return true;
}
/**
* Return values:
* > 0 success
* == 0 temporary failure
* < 0 fatal error
*/
static int build_index(int index_type, struct tagcache_header *h, int tmpfd)
{
int i;
struct tagcache_header tch;
struct index_entry idxbuf[IDX_BUF_DEPTH];
int idxbuf_pos;
char buf[MAX_PATH];
int fd = -1, masterfd;
bool error = false;
int init;
int masterfd_pos;
logf("Building index: %d", index_type);
tempbufidx = 0;
tempbuf_pos = TAGFILE_MAX_ENTRIES * sizeof(struct tempbuf_searchidx);
tempbuf_pos += LOOKUP_BUF_DEPTH * sizeof(void **);
tempbuf_left = tempbuf_size - tempbuf_pos - 8;
if (tempbuf_left - TAGFILE_ENTRY_AVG_LENGTH * TAGFILE_MAX_ENTRIES < 0)
{
logf("Buffer way too small!");
return 0;
}
lookup = (struct tempbuf_searchidx **)
(tempbuf + sizeof(struct tempbuf_searchidx)*TAGFILE_MAX_ENTRIES);
memset(lookup, 0, LOOKUP_BUF_DEPTH * sizeof(void **));
/* Open the index file, which contains the tag names. */
snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, index_type);
fd = open(buf, O_RDWR);
if (fd >= 0)
{
/* Read the header. */
if (read(fd, &tch, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || tch.magic != TAGCACHE_MAGIC)
{
logf("header error");
close(fd);
return -2;
}
/**
* If tag file contains unique tags (sorted index), we will load
* it entirely into memory so we can resort it later for use with
* chunked browsing.
*/
if (tagcache_is_sorted_tag(index_type))
{
logf("loading tags...");
for (i = 0; i < tch.entry_count; i++)
{
struct tagfile_entry entry;
int loc = lseek(fd, 0, SEEK_CUR);
if (read(fd, &entry, sizeof(struct tagfile_entry))
!= sizeof(struct tagfile_entry))
{
logf("read error");
close(fd);
return -2;
}
if (entry.tag_length >= (int)sizeof(buf))
{
logf("too long tag");
close(fd);
return -2;
}
if (read(fd, buf, entry.tag_length) != entry.tag_length)
{
logf("read error #2");
close(fd);
return -2;
}
/**
* Save the tag and tag id in the memory buffer. Tag id
* is saved so we can later reindex the master lookup
* table when the index gets resorted.
*/
tempbuf_insert(buf, loc/TAGFILE_ENTRY_CHUNK_LENGTH
+ TAGFILE_MAX_ENTRIES, entry.idx_id,
tagcache_is_unique_tag(index_type));
yield();
}
logf("done");
}
else
tempbufidx = tch.entry_count;
}
else
{
/**
* Creating new index file to store the tags. No need to preload
* anything whether the index type is sorted or not.
*/
fd = open(buf, O_WRONLY | O_CREAT | O_TRUNC);
if (fd < 0)
{
logf("%s open fail", buf);
return -2;
}
tch.magic = TAGCACHE_MAGIC;
tch.entry_count = 0;
tch.datasize = 0;
if (write(fd, &tch, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header))
{
logf("header write failed");
close(fd);
return -2;
}
}
/* Loading the tag lookup file as "master file". */
logf("Loading index file");
masterfd = open(TAGCACHE_FILE_MASTER, O_RDWR);
if (masterfd < 0)
{
logf("Creating new index");
masterfd = open(TAGCACHE_FILE_MASTER, O_WRONLY | O_CREAT | O_TRUNC);
if (masterfd < 0)
{
logf("Failure to create index file");
close(fd);
return -2;
}
/* Write the header (write real values later). */
tch = *h;
tch.entry_count = 0;
tch.datasize = 0;
write(masterfd, &tch, sizeof(struct tagcache_header));
init = true;
masterfd_pos = lseek(masterfd, 0, SEEK_CUR);
}
else
{
/**
* Master file already exists so we need to process the current
* file first.
*/
init = false;
if (read(masterfd, &tch, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || tch.magic != TAGCACHE_MAGIC)
{
logf("header error");
close(fd);
close(masterfd);
return -2;
}
/**
* If we reach end of the master file, we need to expand it to
* hold new tags. If the current index is not sorted, we can
* simply append new data to end of the file.
* However, if the index is sorted, we need to update all tag
* pointers in the master file for the current index.
*/
masterfd_pos = lseek(masterfd, tch.entry_count * sizeof(struct index_entry),
SEEK_CUR);
if (masterfd_pos == filesize(masterfd))
{
logf("appending...");
init = true;
}
}
/**
* Load new unique tags in memory to be sorted later and added
* to the master lookup file.
*/
if (tagcache_is_sorted_tag(index_type))
{
lseek(tmpfd, sizeof(struct tagcache_header), SEEK_SET);
/* h is the header of the temporary file containing new tags. */
logf("inserting new tags...");
for (i = 0; i < h->entry_count; i++)
{
struct temp_file_entry entry;
if (read(tmpfd, &entry, sizeof(struct temp_file_entry)) !=
sizeof(struct temp_file_entry))
{
logf("read fail #1");
error = true;
goto error_exit;
}
/* Read data. */
if (entry.tag_length[index_type] >= (long)sizeof(buf))
{
logf("too long entry!");
error = true;
goto error_exit;
}
lseek(tmpfd, entry.tag_offset[index_type], SEEK_CUR);
if (read(tmpfd, buf, entry.tag_length[index_type]) !=
entry.tag_length[index_type])
{
logf("read fail #3");
error = true;
goto error_exit;
}
if (tagcache_is_unique_tag(index_type))
error = !tempbuf_insert(buf, i, -1, true);
else
error = !tempbuf_insert(buf, i, tch.entry_count + i, false);
if (error)
{
logf("insert error");
goto error_exit;
}
/* Skip to next. */
lseek(tmpfd, entry.data_length - entry.tag_offset[index_type] -
entry.tag_length[index_type], SEEK_CUR);
yield();
}
logf("done");
/* Sort the buffer data and write it to the index file. */
lseek(fd, sizeof(struct tagcache_header), SEEK_SET);
i = tempbuf_sort(fd);
if (i < 0)
goto error_exit;
logf("sorted %d tags", i);
/**
* Now update all indexes in the master lookup file.
*/
logf("updating indices...");
lseek(masterfd, sizeof(struct tagcache_header), SEEK_SET);
for (i = 0; i < tch.entry_count; i += idxbuf_pos)
{
int j;
int loc = lseek(masterfd, 0, SEEK_CUR);
idxbuf_pos = MIN(tch.entry_count - i, IDX_BUF_DEPTH);
if (read(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) !=
(int)sizeof(struct index_entry)*idxbuf_pos)
{
logf("read fail #2");
error = true;
goto error_exit ;
}
lseek(masterfd, loc, SEEK_SET);
for (j = 0; j < idxbuf_pos; j++)
{
idxbuf[j].tag_seek[index_type] = tempbuf_find_location(
idxbuf[j].tag_seek[index_type]/TAGFILE_ENTRY_CHUNK_LENGTH
+ TAGFILE_MAX_ENTRIES);
if (idxbuf[j].tag_seek[index_type] < 0)
{
logf("update error: %d/%d", i+j, tch.entry_count);
error = true;
goto error_exit;
}
yield();
}
/* Write back the updated index. */
if (write(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) !=
(int)sizeof(struct index_entry)*idxbuf_pos)
{
logf("write fail");
error = true;
goto error_exit;
}
}
logf("done");
}
/**
* Walk through the temporary file containing the new tags.
*/
// build_normal_index(h, tmpfd, masterfd, idx);
logf("updating new indices...");
lseek(masterfd, masterfd_pos, SEEK_SET);
lseek(tmpfd, sizeof(struct tagcache_header), SEEK_SET);
lseek(fd, 0, SEEK_END);
for (i = 0; i < h->entry_count; i += idxbuf_pos)
{
int j;
idxbuf_pos = MIN(h->entry_count - i, IDX_BUF_DEPTH);
if (init)
{
memset(idxbuf, 0, sizeof(struct index_entry)*IDX_BUF_DEPTH);
}
else
{
int loc = lseek(masterfd, 0, SEEK_CUR);
if (read(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) !=
(int)sizeof(struct index_entry)*idxbuf_pos)
{
logf("read fail #2");
error = true;
break ;
}
lseek(masterfd, loc, SEEK_SET);
}
/* Read entry headers. */
for (j = 0; j < idxbuf_pos; j++)
{
if (!tagcache_is_sorted_tag(index_type))
{
struct temp_file_entry entry;
struct tagfile_entry fe;
if (read(tmpfd, &entry, sizeof(struct temp_file_entry)) !=
sizeof(struct temp_file_entry))
{
logf("read fail #1");
error = true;
break ;
}
/* Read data. */
if (entry.tag_length[index_type] >= (int)sizeof(buf))
{
logf("too long entry!");
logf("length=%d", entry.tag_length[index_type]);
logf("pos=0x%02x", lseek(tmpfd, 0, SEEK_CUR));
error = true;
break ;
}
lseek(tmpfd, entry.tag_offset[index_type], SEEK_CUR);
if (read(tmpfd, buf, entry.tag_length[index_type]) !=
entry.tag_length[index_type])
{
logf("read fail #3");
logf("offset=0x%02x", entry.tag_offset[index_type]);
logf("length=0x%02x", entry.tag_length[index_type]);
error = true;
break ;
}
/* Write to index file. */
idxbuf[j].tag_seek[index_type] = lseek(fd, 0, SEEK_CUR);
fe.tag_length = entry.tag_length[index_type];
fe.idx_id = tch.entry_count + i + j;
write(fd, &fe, sizeof(struct tagfile_entry));
write(fd, buf, fe.tag_length);
tempbufidx++;
/* Skip to next. */
lseek(tmpfd, entry.data_length - entry.tag_offset[index_type] -
entry.tag_length[index_type], SEEK_CUR);
}
else
{
/* Locate the correct entry from the sorted array. */
idxbuf[j].tag_seek[index_type] = tempbuf_find_location(i + j);
if (idxbuf[j].tag_seek[index_type] < 0)
{
logf("entry not found (%d)");
error = true;
break ;
}
}
}
/* Write index. */
if (write(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) !=
(int)sizeof(struct index_entry)*idxbuf_pos)
{
logf("tagcache: write fail #4");
error = true;
break ;
}
yield();
}
logf("done");
/* Finally write the header. */
tch.magic = TAGCACHE_MAGIC;
tch.entry_count = tempbufidx;
tch.datasize = lseek(fd, 0, SEEK_END) - sizeof(struct tagcache_header);
lseek(fd, 0, SEEK_SET);
write(fd, &tch, sizeof(struct tagcache_header));
if (index_type != tag_filename)
h->datasize += tch.datasize;
logf("s:%d/%d/%d", index_type, tch.datasize, h->datasize);
error_exit:
close(fd);
close(masterfd);
if (error)
return -2;
return 1;
}
static bool commit(void)
{
struct tagcache_header header, header_old;
int i, len, rc;
int tmpfd;
int masterfd;
logf("committing tagcache");
tmpfd = open(TAGCACHE_FILE_TEMP, O_RDONLY);
if (tmpfd < 0)
{
logf("nothing to commit");
return true;
}
/* Load the header. */
len = sizeof(struct tagcache_header);
rc = read(tmpfd, &header, len);
if (header.magic != TAGCACHE_MAGIC || rc != len)
{
logf("incorrect header");
close(tmpfd);
remove_files();
remove(TAGCACHE_FILE_TEMP);
return false;
}
if (header.entry_count == 0)
{
logf("nothing to commit");
close(tmpfd);
remove(TAGCACHE_FILE_TEMP);
return true;
}
/* Try to steal every buffer we can :) */
#ifdef HAVE_DIRCACHE
if (tempbuf_size == 0)
{
/* Try to steal the dircache buffer. */
tempbuf = dircache_steal_buffer(&tempbuf_size);
tempbuf_size &= ~0x03;
}
#endif
#ifdef HAVE_TC_RAMCACHE
if (tempbuf_size == 0 && stat.ramcache_allocated > 0)
{
stat.ramcache = false;
tempbuf = (char *)(hdr + 1);
tempbuf_size = stat.ramcache_allocated - sizeof(struct ramcache_header) - 128;
tempbuf_size &= ~0x03;
}
#endif
/* And finally fail if there are no buffers available. */
if (tempbuf_size == 0)
{
logf("delaying commit until next boot");
stat.commit_delayed = true;
close(tmpfd);
return false;
}
logf("commit %d entries...", header.entry_count);
/* Now create the index files. */
stat.commit_step = 0;
header.datasize = 0;
stat.commit_delayed = false;
for (i = 0; i < TAG_COUNT; i++)
{
int ret;
stat.commit_step++;
if (tagcache_is_numeric_tag(i))
{
build_numeric_index(i, &header, tmpfd);
continue;
}
ret = build_index(i, &header, tmpfd);
if (ret <= 0)
{
close(tmpfd);
logf("tagcache failed init");
if (ret < 0)
remove_files();
else
stat.commit_delayed = true;
stat.commit_step = 0;
return false;
}
}
close(tmpfd);
stat.commit_step = 0;
/* Update the master index headers. */
masterfd = open(TAGCACHE_FILE_MASTER, O_RDWR);
if (masterfd < 0)
{
logf("failed to open master index");
return false;
}
if (read(masterfd, &header_old, sizeof(struct tagcache_header))
!= sizeof(struct tagcache_header) ||
header_old.magic != TAGCACHE_MAGIC)
{
logf("incorrect header");
close(masterfd);
remove_files();
return false;
}
header.entry_count += header_old.entry_count;
/* Datasize has been recalculated. */
// header.datasize += header_old.datasize;
lseek(masterfd, 0, SEEK_SET);
write(masterfd, &header, sizeof(struct tagcache_header));
close(masterfd);
logf("tagcache committed");
remove(TAGCACHE_FILE_TEMP);
#ifdef HAVE_DIRCACHE
/* Rebuild the dircache, if we stole the buffer. */
dircache_build(0);
#endif
#ifdef HAVE_TC_RAMCACHE
/* Reload tagcache. */
if (stat.ramcache_allocated > 0 && !stat.ramcache)
tagcache_start_scan();
#endif
return true;
}
static void allocate_tempbuf(void)
{
/* Yeah, malloc would be really nice now :) */
tempbuf = (char *)(((long)audiobuf & ~0x03) + 0x04);
tempbuf_size = (long)audiobufend - (long)audiobuf - 4;
audiobuf += tempbuf_size;
}
static void free_tempbuf(void)
{
if (tempbuf_size == 0)
return ;
audiobuf -= tempbuf_size;
tempbuf = NULL;
tempbuf_size = 0;
}
#ifdef HAVE_TC_RAMCACHE
static bool allocate_tagcache(void)
{
int rc, len;
int fd;
hdr = NULL;
fd = open(TAGCACHE_FILE_MASTER, O_RDONLY);
if (fd < 0)
{
logf("no tagcache file found.");
return false;
}
/* Load the header. */
hdr = (struct ramcache_header *)(((long)audiobuf & ~0x03) + 0x04);
memset(hdr, 0, sizeof(struct ramcache_header));
len = sizeof(struct tagcache_header);
rc = read(fd, &hdr->h, len);
close(fd);
if (hdr->h.magic != TAGCACHE_MAGIC || rc != len)
{
logf("incorrect header");
remove_files();
hdr = NULL;
return false;
}
hdr->indices = (struct index_entry *)(hdr + 1);
/**
* Now calculate the required cache size plus
* some extra space for alignment fixes.
*/
stat.ramcache_allocated = hdr->h.datasize + 128 + TAGCACHE_RESERVE +
sizeof(struct index_entry) * hdr->h.entry_count +
sizeof(struct ramcache_header) + TAG_COUNT*sizeof(void *);
logf("tagcache: %d bytes allocated.", stat.ramcache_allocated);
logf("at: 0x%04x", audiobuf);
audiobuf += (long)((stat.ramcache_allocated & ~0x03) + 128);
return true;
}
static bool load_tagcache(void)
{
struct tagcache_header *tch;
long bytesleft = stat.ramcache_allocated;
struct index_entry *idx;
int rc, fd;
char *p;
int i;
/* We really need the dircache for this. */
if (!dircache_is_enabled())
return false;
logf("loading tagcache to ram...");
fd = open(TAGCACHE_FILE_MASTER, O_RDONLY);
if (fd < 0)
{
logf("tagcache open failed");
return false;
}
if (read(fd, &hdr->h, sizeof(struct tagcache_header))
!= sizeof(struct tagcache_header)
|| hdr->h.magic != TAGCACHE_MAGIC)
{
logf("incorrect header");
return false;
}
lseek(fd, sizeof(struct tagcache_header), SEEK_SET);
idx = hdr->indices;
/* Load the master index table. */
for (i = 0; i < hdr->h.entry_count; i++)
{
rc = read(fd, idx, sizeof(struct index_entry));
if (rc != sizeof(struct index_entry))
{
logf("read error #1");
close(fd);
return false;
}
bytesleft -= sizeof(struct index_entry);
if (bytesleft < 0 || ((long)idx - (long)hdr->indices) >= stat.ramcache_allocated)
{
logf("too big tagcache.");
close(fd);
return false;
}
idx++;
}
close(fd);
/* Load the tags. */
p = (char *)idx;
for (i = 0; i < TAG_COUNT; i++)
{
struct tagfile_entry *fe;
char buf[MAX_PATH];
if (tagcache_is_numeric_tag(i))
continue ;
//p = ((void *)p+1);
p = (char *)((long)p & ~0x03) + 0x04;
hdr->tags[i] = p;
snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, i);
fd = open(buf, O_RDONLY);
if (fd < 0)
{
logf("%s open fail", buf);
return false;
}
/* Check the header. */
tch = (struct tagcache_header *)p;
rc = read(fd, tch, sizeof(struct tagcache_header));
p += rc;
if (rc != sizeof(struct tagcache_header) ||
tch->magic != TAGCACHE_MAGIC)
{
logf("incorrect header");
close(fd);
return false;
}
for (hdr->entry_count[i] = 0;
hdr->entry_count[i] < tch->entry_count;
hdr->entry_count[i]++)
{
yield();
fe = (struct tagfile_entry *)p;
rc = read(fd, fe, sizeof(struct tagfile_entry));
if (rc != sizeof(struct tagfile_entry))
{
/* End of lookup table. */
logf("read error");
close(fd);
return false;
}
/* We have a special handling for the filename tags. */
if (i == tag_filename)
{
const struct dircache_entry *dc;
if (fe->tag_length >= (long)sizeof(buf)-1)
{
logf("too long filename");
close(fd);
return false;
}
rc = read(fd, buf, fe->tag_length);
if (rc != fe->tag_length)
{
logf("read error #3");
close(fd);
return false;
}
dc = dircache_get_entry_ptr(buf);
if (dc == NULL)
{
logf("Entry no longer valid.");
logf("-> %s", buf);
/* FIXME: Properly delete the entry. */
hdr->indices[hdr->entry_count[i]].flag |= FLAG_DELETED;
continue ;
}
hdr->indices[hdr->entry_count[i]].tag_seek[tag_filename]
= (long)dc;
continue ;
}
bytesleft -= sizeof(struct tagfile_entry) + fe->tag_length;
if (bytesleft < 0)
{
logf("too big tagcache #2");
logf("tl: %d", fe->tag_length);
logf("bl: %d", bytesleft);
close(fd);
return false;
}
p = fe->tag_data;
rc = read(fd, fe->tag_data, fe->tag_length);
p += rc;
if (rc != fe->tag_length)
{
logf("read error #4");
logf("rc=0x%04x", rc); // 0x431
logf("len=0x%04x", fe->tag_length); // 0x4000
logf("pos=0x%04x", lseek(fd, 0, SEEK_CUR)); // 0x433
logf("i=0x%02x", i); // 0x00
close(fd);
return false;
}
}
close(fd);
}
stat.ramcache_used = stat.ramcache_allocated - bytesleft;
logf("tagcache loaded into ram!");
return true;
}
#endif
static bool check_dir(const char *dirname)
{
DIRCACHED *dir;
int len;
int success = false;
dir = opendir_cached(dirname);
if (!dir)
{
logf("tagcache: opendir_cached() failed");
return false;
}
/* Recursively scan the dir. */
while (queue_empty(&tagcache_queue))
{
struct dircache_entry *entry;
entry = readdir_cached(dir);
if (entry == NULL)
{
success = true;
break ;
}
if (!strcmp(entry->d_name, ".") ||
!strcmp(entry->d_name, ".."))
continue;
yield();
len = strlen(curpath);
snprintf(&curpath[len], curpath_size - len, "/%s",
entry->d_name);
processed_dir_count++;
if (entry->attribute & ATTR_DIRECTORY)
check_dir(curpath);
else
#ifdef HAVE_TC_RAMCACHE
add_tagcache(curpath, dir->internal_entry);
#else
add_tagcache(curpath);
#endif
curpath[len] = '\0';
}
closedir_cached(dir);
return success;
}
static void build_tagcache(void)
{
struct tagcache_header header;
bool ret;
char buf[MAX_PATH];
curpath[0] = '\0';
data_size = 0;
total_entry_count = 0;
processed_dir_count = 0;
logf("updating tagcache");
cachefd = open(TAGCACHE_FILE_TEMP, O_RDONLY);
if (cachefd >= 0)
{
logf("skipping, cache already waiting for commit");
close(cachefd);
return ;
}
cachefd = open(TAGCACHE_FILE_TEMP, O_RDWR | O_CREAT | O_TRUNC);
if (cachefd < 0)
{
logf("master file open failed");
return ;
}
snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, tag_filename);
filenametag_fd = open(buf, O_RDONLY);
if (filenametag_fd >= 0)
{
if (read(filenametag_fd, &header, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || header.magic != TAGCACHE_MAGIC)
{
logf("header error");
close(filenametag_fd);
filenametag_fd = -1;
}
}
cpu_boost(true);
/* Scan for new files. */
memset(&header, 0, sizeof(struct tagcache_header));
write(cachefd, &header, sizeof(struct tagcache_header));
//strcpy(curpath, "/Best");
ret = check_dir("/");
/* Write the header. */
header.magic = TAGCACHE_MAGIC;
header.datasize = data_size;
header.entry_count = total_entry_count;
lseek(cachefd, 0, SEEK_SET);
write(cachefd, &header, sizeof(struct tagcache_header));
close(cachefd);
if (filenametag_fd >= 0)
{
close(filenametag_fd);
filenametag_fd = -1;
}
if (!ret)
{
logf("Aborted.");
cpu_boost(false);
return ;
}
/* Commit changes to the database. */
if (commit())
{
remove(TAGCACHE_FILE_TEMP);
logf("tagcache built!");
}
cpu_boost(false);
}
#ifdef HAVE_TC_RAMCACHE
static void load_ramcache(void)
{
if (!hdr)
return ;
cpu_boost(true);
/* At first we should load the cache (if exists). */
stat.ramcache = load_tagcache();
if (!stat.ramcache)
{
hdr = NULL;
remove_files();
}
cpu_boost(false);
}
#endif
static void tagcache_thread(void)
{
struct event ev;
bool check_done = false;
/* If the previous cache build/update was interrupted, commit
* the changes first in foreground. */
cpu_boost(true);
allocate_tempbuf();
commit();
free_tempbuf();
#ifdef HAVE_TC_RAMCACHE
/* Allocate space for the tagcache if found on disk. */
if (global_settings.tagcache_ram)
allocate_tagcache();
#endif
cpu_boost(false);
stat.initialized = true;
while (1)
{
queue_wait_w_tmo(&tagcache_queue, &ev, HZ);
switch (ev.id)
{
case Q_START_SCAN:
check_done = false;
break ;
case Q_FORCE_UPDATE:
//remove_files();
build_tagcache();
break ;
#ifdef HAVE_TC_RAMCACHE
case SYS_TIMEOUT:
if (check_done || !dircache_is_enabled())
break ;
if (!stat.ramcache && global_settings.tagcache_ram)
load_ramcache();
if (stat.ramcache)
build_tagcache();
check_done = true;
break ;
#endif
case Q_STOP_SCAN:
break ;
case SYS_POWEROFF:
break ;
#ifndef SIMULATOR
case SYS_USB_CONNECTED:
logf("USB: TagCache");
usb_acknowledge(SYS_USB_CONNECTED_ACK);
usb_wait_for_disconnect(&tagcache_queue);
break ;
#endif
}
}
}
static int get_progress(void)
{
int total_count = -1;
#ifdef HAVE_DIRCACHE
if (dircache_is_enabled())
{
total_count = dircache_get_entry_count();
}
else
{
if (hdr && stat.ramcache)
total_count = hdr->h.entry_count;
}
#endif
if (total_count < 0)
return -1;
return processed_dir_count * 100 / total_count;
}
struct tagcache_stat* tagcache_get_stat(void)
{
stat.progress = get_progress();
stat.processed_entries = processed_dir_count;
return &stat;
}
void tagcache_start_scan(void)
{
queue_post(&tagcache_queue, Q_START_SCAN, 0);
}
bool tagcache_force_update(void)
{
queue_post(&tagcache_queue, Q_FORCE_UPDATE, 0);
gui_syncsplash(HZ*2, true, str(LANG_TAGCACHE_FORCE_UPDATE_SPLASH));
return false;
}
void tagcache_stop_scan(void)
{
queue_post(&tagcache_queue, Q_STOP_SCAN, 0);
}
#ifdef HAVE_TC_RAMCACHE
bool tagcache_is_ramcache(void)
{
return stat.ramcache;
}
#endif
void tagcache_init(void)
{
stat.initialized = false;
stat.commit_step = 0;
queue_init(&tagcache_queue);
create_thread(tagcache_thread, tagcache_stack,
sizeof(tagcache_stack), tagcache_thread_name);
}
bool tagcache_is_initialized(void)
{
return stat.initialized;
}
int tagcache_get_commit_step(void)
{
return stat.commit_step;
}
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