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Clean up create_track_index, fixing FS#9333, and use tagcache-provided length instead of strlen.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20938 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andrew Mahone 2009-05-15 05:44:54 +00:00
parent c1267dc700
commit ad5d665620
1 changed files with 33 additions and 36 deletions
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65
apps/plugins/pictureflow/pictureflow.c
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@ -731,7 +731,7 @@ int create_album_index(void)
while (rb->tagcache_get_next(&tcs))
{
buf_size -= sizeof(struct album_data);
l = rb->strlen(tcs.result) + 1;
l = tcs.result_len;
if ( album_count > 0 )
album[-album_count].name_idx = album[1-album_count].name_idx + old_l;
@ -777,6 +777,16 @@ char* get_track_name(const int track_index)
return 0;
}
/**
Compare two unsigned ints passed via pointers.
*/
int compare_uints (const void *a_v, const void *b_v)
{
uint32_t a = *(uint32_t *)a_v;
uint32_t b = *(uint32_t *)b_v;
return (int)(a - b);
}
/**
Create the track index of the given slide_index.
*/
@ -789,61 +799,48 @@ int create_track_index(const int slide_index)
if (!rb->tagcache_search(&tcs, tag_title))
return -1;
int ret = 0;
char temp_titles[MAX_TRACKS][AVG_TRACK_NAME_LENGTH*4];
int temp_seeks[MAX_TRACKS];
struct track_data temp_tracks[MAX_TRACKS];
uint32_t temp_tracknums[MAX_TRACKS];
rb->tagcache_search_add_filter(&tcs, tag_album, album[slide_index].seek);
track_count=0;
int string_index = 0;
int l, track_num, heighest_index = 0;
int string_index = 0, i, track_num;
for(l=0;l<MAX_TRACKS;l++)
temp_titles[l][0] = '\0';
while (rb->tagcache_get_next(&tcs) && track_count < MAX_TRACKS)
{
track_num = rb->tagcache_get_numeric(&tcs, tag_tracknumber) - 1;
track_num = rb->tagcache_get_numeric(&tcs, tag_tracknumber);
int avail = sizeof(track_names) - string_index;
int len;
if (track_num >= 0)
{
rb->snprintf(temp_titles[track_num],sizeof(temp_titles[track_num]),
"%d: %s", track_num+1, tcs.result);
temp_seeks[track_num] = tcs.result_seek;
len = 1 + rb->snprintf(track_names + string_index , avail,
"%d: %s", track_num, tcs.result);
}
else
{
track_num = 0;
while (temp_titles[track_num][0] != '\0')
track_num++;
rb->strcpy(temp_titles[track_num], tcs.result);
temp_seeks[track_num] = tcs.result_seek;
len = tcs.result_len;
rb->strncpy(track_names + string_index, tcs.result, avail);
}
if (track_num > heighest_index)
heighest_index = track_num;
if (len > avail)
return -1;
temp_tracknums[track_count] = (track_num << 8) + track_count;
temp_tracks[track_count].name_idx = string_index;
temp_tracks[track_count].seek = tcs.result_seek;
track_count++;
string_index += len;
}
rb->tagcache_search_finish(&tcs);
track_index = slide_index;
/* now fix the track list order */
l = 0;
track_count = 0;
while (l <= heighest_index &&
string_index < MAX_TRACKS*AVG_TRACK_NAME_LENGTH)
rb->qsort(temp_tracknums, track_count, sizeof(int), compare_uints);
for (i = 0; i < track_count; i++)
{
if (temp_titles[l][0] != '\0')
{
rb->strcpy(track_names + string_index, temp_titles[l]);
tracks[track_count].name_idx = string_index;
tracks[track_count].seek = temp_seeks[l];
string_index += rb->strlen(temp_titles[l]) + 1;
track_count++;
tracks[i].name_idx = temp_tracks[0xFF & temp_tracknums[i]].name_idx;
tracks[i].seek = temp_tracks[0xFF & temp_tracknums[i]].seek;
}
l++;
}
if (ret != 0)
return ret;
else
return (track_count > 0) ? 0 : -1;
}