len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-10-14 02:27:39 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

FS#11920: Do not overwrite already existing metadata and take into account string termination. This can save several bytes of the metadata buffer when tags have multiple entries (e.g. multiple gerne tags)

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29349 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2011-02-20 16:12:05 +00:00
parent 85e40257dc
commit a7e25a01ba
4 changed files with 24 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

12
apps/metadata/id3tags.c
View file

@ -358,8 +358,7 @@ static int parseuser( struct mp3entry* entry, char* tag, int bufferpos )
if ((tag - entry->id3v2buf + desc_len + 2) < bufferpos) {
/* At least part of the value was read, so we can safely try to
* parse it
*/
* parse it */
value = tag + desc_len + 1;
value_len = bufferpos - (tag - entry->id3v2buf);
@ -368,8 +367,7 @@ static int parseuser( struct mp3entry* entry, char* tag, int bufferpos )
entry->albumartist = tag;
#if CONFIG_CODEC == SWCODEC
} else {
value_len = parse_replaygain(tag, value, entry, tag,
value_len);
value_len = parse_replaygain(tag, value, entry, tag, value_len);
#endif
}
}
@ -1041,6 +1039,12 @@ void setid3v2title(int fd, struct mp3entry *entry)
if( tr->ppFunc )
bufferpos = tr->ppFunc(entry, tag, bufferpos);
/* Trim. Take into account that multiple string contents will
* only be displayed up to their first null termination. All
* content after this null termination is obsolete and can be
* overwritten. */
bufferpos -= (bytesread - strlen(tag));
/* Seek to the next frame */
if(framelen < totframelen)
lseek(fd, totframelen - framelen, SEEK_CUR);

5
apps/metadata/metadata_common.c
View file

@ -337,7 +337,10 @@ long parse_tag(const char* name, char* value, struct mp3entry* id3,
p = NULL;
}
if (p)
/* Do not overwrite already available metadata. Especially when reading
* tags with e.g. multiple genres / artists. This way only the first
* of multiple entries is used, all following are dropped. */
if (p!=NULL && *p==NULL)
{
len = strlen(value);
len = MIN(len, buf_remaining - 1);

16
apps/metadata/mp4.c
View file

@ -117,11 +117,17 @@ static unsigned int read_mp4_tag_string(int fd, int size_left, char** buffer,
if (bytes_read)
{
(*buffer)[bytes_read] = 0;
*dest = *buffer;
length = strlen(*buffer) + 1;
*buffer_left -= length;
*buffer += length;
/* Do not overwrite already available metadata. Especially when reading
* tags with e.g. multiple genres / artists. This way only the first
* of multiple entries is used, all following are dropped. */
if (*dest == NULL)
{
(*buffer)[bytes_read] = 0;
*dest = *buffer;
length = strlen(*buffer) + 1;
*buffer_left -= length;
*buffer += length;
}
}
else
{

2
apps/plugins/SOURCES
View file

@ -217,7 +217,7 @@ superdom.c
#ifdef HAVE_TEST_PLUGINS /* enable in advanced build options */
#if 1//def HAVE_TEST_PLUGINS /* enable in advanced build options */
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
test_boost.c
#endif