id3_byte_t const* id3_metadata_getuniquefileidentifier(const struct id3_tag* tag, const char* owner_identifier, id3_length_t* length)
{
int i=0, result;
id3_ucs4_t const * ucs4;
id3_latin1_t* latin1;
union id3_field const *field;
struct id3_frame const *frame;
id3_byte_t const* identifier;
for (i=0; ; ++i)
{
frame = id3_tag_findframe(tag, "UFID", i);
if (frame == 0)
return 0;
field = id3_frame_field(frame, 0);
if (field == 0)
return 0;
if (strcmp(id3_field_getlatin1(field), owner_identifier)==0)
break;
}
field = id3_frame_field(frame, 1);
if (field == 0)
return 0;
return id3_field_getbinarydata(field, length);
}
/**
* Imports the MusicBrainz TrackId from the UFID tag.
*/
static void
tag_id3_import_ufid(struct tag *mpd_tag, struct id3_tag *id3_tag)
{
for (unsigned i = 0;; ++i) {
const struct id3_frame *frame;
union id3_field *field;
const id3_latin1_t *name;
const id3_byte_t *value;
id3_length_t length;
frame = id3_tag_findframe(id3_tag, "UFID", i);
if (frame == NULL)
break;
field = id3_frame_field(frame, 0);
if (field == NULL)
continue;
name = id3_field_getlatin1(field);
if (name == NULL ||
strcmp((const char *)name, "http://musicbrainz.org") != 0)
continue;
field = id3_frame_field(frame, 1);
if (field == NULL)
continue;
value = id3_field_getbinarydata(field, &length);
if (value == NULL || length == 0)
continue;
tag_add_item_n(mpd_tag, TAG_MUSICBRAINZ_TRACKID,
(const char*)value, length);
}
}
const id3_ucs4_t* id3_metadata_getusertext(const struct id3_tag* tag, const char* description)
{
id3_ucs4_t const * ucs4;
id3_latin1_t* latin1;
union id3_field const *field;
struct id3_frame const *frame;
id3_length_t length;
int i=0, result;
for (i=0; ; ++i)
{
frame = id3_tag_findframe(tag, "TXXX", i);
if (frame == 0)
return id3_ucs4_empty;
field = id3_frame_field(frame, 1);
if (field == 0)
return id3_ucs4_empty;
latin1=id3_ucs4_latin1duplicate(id3_field_getstring(field));
result=strcmp(latin1, description);
free(latin1);
if (result==0)
break;
}
field = id3_frame_field(frame, 2);
if (field == 0)
return id3_ucs4_empty;
return id3_field_getstring(field);
}
const id3_ucs4_t* metadata_getstring(const struct id3_tag* tag, const char* id, enum id3_field_textencoding* encoding)
{
int nstrings, j;
char const *name;
id3_ucs4_t const *ucs4;
union id3_field const *field;
struct id3_frame const *frame;
frame = id3_tag_findframe(tag, id, 0);
if (frame == 0)
return id3_ucs4_empty;
*encoding = id3_field_gettextencoding(id3_frame_field(frame, 0));
field = id3_frame_field(frame, 1);
if (field == 0)
return id3_ucs4_empty;
nstrings = id3_field_getnstrings(field);
ucs4 = id3_ucs4_empty;
for (j = 0; j < nstrings; ++j)
{
ucs4 = id3_field_getstrings(field, j);
if (ucs4 && *ucs4)
break;
}
return ucs4;
}
const id3_ucs4_t* id3_metadata_getcomment(const struct id3_tag* tag, enum id3_field_textencoding* encoding)
{
union id3_field const *field;
struct id3_frame const *frame;
const id3_ucs4_t* ucs4 = 0;
int commentNumber = 0;
// return the first non-empty comment
do
{
frame = id3_tag_findframe(tag, ID3_FRAME_COMMENT, commentNumber++);
if (frame == 0)
return id3_ucs4_empty;
*encoding = id3_field_gettextencoding(id3_frame_field(frame, 0));
field = id3_frame_field(frame, 3);
if (field == 0)
return id3_ucs4_empty;
ucs4 = id3_field_getfullstring(field);
if (!ucs4)
return id3_ucs4_empty;
}
while (*ucs4 == 0);
return ucs4;
}
id3_ucs4_list_t *metadata_getstrings(const struct id3_tag* tag, const char* id, enum id3_field_textencoding* encoding)
{
int nstrings, j;
union id3_field const *field;
struct id3_frame const *frame;
id3_ucs4_list_t *list;
frame = id3_tag_findframe(tag, id, 0);
if (frame == 0)
return 0;
*encoding = id3_field_gettextencoding(id3_frame_field(frame, 0));
field = id3_frame_field(frame, 1);
if (field == 0)
return 0;
nstrings = id3_field_getnstrings(field);
list = 0;
if (nstrings)
{
list = (id3_ucs4_list_t*)malloc(sizeof(*list));
if (list)
list->strings = (const id3_ucs4_t**)malloc(nstrings * sizeof(*list->strings));
}
if (list && list->strings)
{
list->nstrings = nstrings;
for (j = 0; j < list->nstrings; ++j)
list->strings[j] = id3_field_getstrings(field, j);
}
return list;
}
static void
write_tags(ImlibImage * im, lopt * opt)
{
struct id3_frame *frame = id3_tag_get_frame(opt->ctx->tag, opt->index - 1);
union id3_field *field;
int num_data;
char *data;
if ((field = id3_frame_field(frame, 1)) &&
(data = (char *)id3_field_getlatin1(field)))
__imlib_AttachTag(im, "mime-type", 0, strdup(data), destructor_data);
if ((field = id3_frame_field(frame, 3)) &&
(data = (char *)id3_field_getstring(field)))
{
size_t length;
char *dup;
id3_ucs4_t *ptr = (id3_ucs4_t *) data;
while (*ptr)
ptr++;
length = (ptr - (id3_ucs4_t *) data + 1) * sizeof(id3_ucs4_t);
dup = (char *)malloc(length);
memcpy(dup, data, length);
__imlib_AttachTag(im, "id3-description", 0, dup, destructor_data);
}
if (field = id3_frame_field(frame, 0))
__imlib_AttachTag(im, "id3-description-text-encoding",
(num_data = (int)id3_field_gettextencoding(field)),
num_data < NUM_OF_ID3_TEXT_ENCODINGS ?
id3_text_encodings[num_data] : NULL, NULL);
if (field = id3_frame_field(frame, 2))
__imlib_AttachTag(im, "id3-picture-type",
(num_data = id3_field_getint(field)),
num_data < NUM_OF_ID3_PIC_TYPES ?
id3_pic_types[num_data] : NULL, NULL);
__imlib_AttachTag(im, "count", id3_tag_get_numframes(opt->ctx->tag),
NULL, NULL);
if (opt->cache_level)
{
context_addref(opt->ctx);
__imlib_AttachTag(im, "context", opt->ctx->id,
opt->ctx, destructor_context);
}
__imlib_AttachTag(im, "index", opt->index, NULL, NULL);
if (opt->traverse)
{
char *buf = NULL;
if ((opt->index + opt->traverse)
<= id3_tag_get_numframes(opt->ctx->tag)
&& (opt->index + opt->traverse) > 0)
{
buf = (char *)malloc((strlen(im->real_file) + 50) * sizeof(char));
sprintf(buf, "%s:index=%d,traverse=%d", im->real_file,
opt->index + opt->traverse, opt->traverse);
}
__imlib_AttachTag(im, "next", 0, buf, destructor_data);
}
}
static struct id3_tag *findId3TagFromBeginning(FILE * stream)
{
struct id3_tag *tag;
struct id3_tag *seektag;
struct id3_frame *frame;
int seek;
tag = getId3Tag(stream, 0, SEEK_SET);
if (!tag) {
return NULL;
} else if (isId3v1(tag)) {
/* id3v1 tags don't belong here */
id3_tag_delete(tag);
return NULL;
}
/* We have an id3v2 tag, so let's look for SEEK frames */
while ((frame = id3_tag_findframe(tag, "SEEK", 0))) {
/* Found a SEEK frame, get it's value */
seek = id3_field_getint(id3_frame_field(frame, 0));
if (seek < 0)
break;
/* Get the tag specified by the SEEK frame */
seektag = getId3Tag(stream, seek, SEEK_CUR);
if (!seektag || isId3v1(seektag))
break;
/* Replace the old tag with the new one */
id3_tag_delete(tag);
tag = seektag;
}
return tag;
}
char id3_metadata_getrating(const struct id3_tag* tag)
{
union id3_field const *field;
struct id3_frame const *frame;
int value;
frame = id3_tag_findframe(tag, "POPM", 0);
if (frame)
{
field = id3_frame_field(frame, 1);
if (field)
{ // based on mediamonkey's values, simplified down a bit
// http://www.mediamonkey.com/forum/viewtopic.php?f=7&t=40532
value = id3_field_getint(field);
if (value == 1) return '1'; // WMP11 madness
if (value < 9) return '0';
if (value < 50) return '1';
if (value < 114) return '2';
if (value < 168) return '3';
if (value < 219) return '4';
return '5';
}
}
else
{
const id3_ucs4_t *ucs4 = id3_metadata_getusertext(tag, "RATING");
if (ucs4 && *ucs4 > '0' && *ucs4 < '6')
return (char)*ucs4;
}
return '0';
}
static int
extract_pic(struct id3_frame *frame, int dest)
{
union id3_field *field;
unsigned char const *data;
id3_length_t length;
int done = 0;
field = id3_frame_field(frame, 4);
data = id3_field_getbinarydata(field, &length);
if (!data)
{
fprintf(stderr, "No image data found for frame\n");
return 0;
}
while (length > 0)
{
ssize_t res;
if ((res = write(dest, data + done, length)) < 0)
{
if (errno == EINTR)
continue;
perror("Unable to write to file");
return 0;
}
length -= res;
done += res;
}
return 1;
}
char * getTagString(struct id3_tag *tag, const char *frameName) {
struct id3_frame *frame;
union id3_field *field;
int i;
const id3_ucs4_t *unicode;
char *ret;
frame = id3_tag_findframe(tag,frameName,0);
if(!frame) {
fprintf(stdout,"No frame\n");
return NULL;
}
for(i=0;;i++) {
field = id3_frame_field(frame,i);
if(!field) {
break;
}
if(id3_field_type(field) == ID3_FIELD_TYPE_STRINGLIST) {
unicode = id3_field_getstrings(field,0);
if(unicode) {
id3_utf8_t *str;
str = id3_ucs4_utf8duplicate(unicode);
ret = (char *) str;
}
}
}
return ret;
}
/**
* Import a "Comment frame" (ID3v2.4.0 section 4.10). It
* contains 4 fields:
*
* - encoding
* - language
* - string
* - full string (we use this one)
*/
static void
tag_id3_import_comment(struct tag *dest, struct id3_tag *tag, const char *id,
enum tag_type type)
{
struct id3_frame const *frame;
id3_ucs4_t const *ucs4;
id3_utf8_t *utf8;
union id3_field const *field;
frame = id3_tag_findframe(tag, id, 0);
if (frame == NULL || frame->nfields != 4)
return;
/* for now I only read the 4th field, with the fullstring */
field = id3_frame_field(frame, 3);
if (field == NULL)
return;
ucs4 = id3_field_getfullstring(field);
if (ucs4 == NULL)
return;
utf8 = import_id3_string(tag_is_id3v1(tag), ucs4);
if (utf8 == NULL)
return;
tag_add_item(dest, type, (char *)utf8);
g_free(utf8);
}
const id3_ucs4_t* id3_metadata_getcomment(const struct id3_tag* tag, enum id3_field_textencoding* encoding)
{
union id3_field const *field;
struct id3_frame const *frame;
int commentNumber = 0;
const id3_ucs4_t* ucs4 = 0;
// return the first non-empty comment
do
{
frame = id3_tag_findframe(tag, ID3_FRAME_COMMENT, commentNumber++);
if (frame && frame->nfields == 4)
{
//get short description
field = id3_frame_field(frame, 2);
if (field == 0)
continue;
ucs4 = id3_field_getstring(field);
// Multiple values are allowed per comment field, but storing different comment
// frames requires a different description for each frame. The first COMM frame
// encountered without a description will be used as the comment field.
// Source http://puddletag.sourceforge.net/source/id3.html
if (ucs4 && *ucs4 == 0)//if short description on this frame is empty - consider this the wanted comment frame
{
//fetch encoding of the frame
field = id3_frame_field(frame, 0);
if(field == 0)
continue;
*encoding = id3_field_gettextencoding(field);
//finally fetch the comment
field = id3_frame_field(frame, 3);
if (field == 0)
continue;
return id3_field_getfullstring(field);
}
}
}
while (frame);
return ucs4;
}
/**
* Import a "Text information frame" (ID3v2.4.0 section 4.2). It
* contains 2 fields:
*
* - encoding
* - string list
*/
static void
tag_id3_import_text(struct tag *dest, struct id3_tag *tag, const char *id,
enum tag_type type)
{
struct id3_frame const *frame;
id3_ucs4_t const *ucs4;
id3_utf8_t *utf8;
union id3_field const *field;
unsigned int nstrings, i;
frame = id3_tag_findframe(tag, id, 0);
if (frame == NULL || frame->nfields != 2)
return;
/* check the encoding field */
field = id3_frame_field(frame, 0);
if (field == NULL || field->type != ID3_FIELD_TYPE_TEXTENCODING)
return;
/* process the value(s) */
field = id3_frame_field(frame, 1);
if (field == NULL || field->type != ID3_FIELD_TYPE_STRINGLIST)
return;
/* Get the number of strings available */
nstrings = id3_field_getnstrings(field);
for (i = 0; i < nstrings; i++) {
ucs4 = id3_field_getstrings(field, i);
if (ucs4 == NULL)
continue;
if (type == TAG_GENRE)
ucs4 = id3_genre_name(ucs4);
utf8 = import_id3_string(tag_is_id3v1(tag), ucs4);
if (utf8 == NULL)
continue;
tag_add_item(dest, type, (char *)utf8);
g_free(utf8);
}
}
int id3_metadata_setcomment(struct id3_tag* tag, id3_ucs4_t* value)
{
union id3_field *field;
struct id3_frame *frame;
frame = id3_tag_findframe(tag, ID3_FRAME_COMMENT, 0);
if (frame == 0)
{
frame = id3_frame_new(ID3_FRAME_COMMENT);
id3_tag_attachframe(tag, frame);
}
id3_field_settextencoding(id3_frame_field(frame, 0), ID3_FIELD_TEXTENCODING_UTF_16);
field = id3_frame_field(frame, 3);
if (field == 0)
return 0;
return id3_field_setfullstring(field, value);
}
int metadata_setstring(struct id3_tag* tag, const char* id, id3_ucs4_t* value)
{
union id3_field *field;
struct id3_frame *frame;
frame = id3_tag_findframe(tag, id, 0);
if (frame == 0)
{
frame = id3_frame_new(id);
id3_tag_attachframe(tag, frame);
}
id3_field_settextencoding(id3_frame_field(frame, 0), ID3_FIELD_TEXTENCODING_UTF_16);
field = id3_frame_field(frame, 1);
if (field == 0)
return 0;
return (id3_field_setstrings(field, 1, &value)==0);
}
wchar_t* GetMP3Tag(const id3_tag* tag, const char* name)
{
wchar_t* content = NULL;
id3_frame* frame = id3_tag_findframe(tag, name, 0);
if (frame != NULL)
{
id3_field* field = id3_frame_field(frame, 0);
id3_field_textencoding encoding = id3_field_gettextencoding(field);
field = id3_frame_field(frame, 1);
switch (id3_field_type(field))
{
case ID3_FIELD_TYPE_STRING:
content = GetMP3Text(encoding, field, id3_field_getstring(field));
break;
case ID3_FIELD_TYPE_STRINGFULL:
content = GetMP3Text(encoding, field, id3_field_getfullstring(field));
break;
case ID3_FIELD_TYPE_STRINGLIST:
{
DWORD dataLength = 0, bufferLength = 0;
unsigned int n = id3_field_getnstrings(field);
for (unsigned int i = 0; i < n; i++)
{
wchar_t* p = GetMP3Text(encoding, field, id3_field_getstrings(field, i));
if (p == NULL)
continue;
AppendBuffer((char**)&content, dataLength, bufferLength, (const char*)p, wcslen(p) * 2 + 1);
SAFE_DELETE_ARRAY(p);
}
}
break;
}
}
return content;
}
id3_byte_t const* id3_metadata_getpicturedata(const struct id3_tag* tag, enum id3_picture_type picture_type, id3_length_t* length)
{
union id3_field const *field;
struct id3_frame const *frame;
frame=id3_metadata_getpictureframebytype(tag, picture_type);
if (frame==0)
return 0;
field = id3_frame_field(frame, 4);
if (field == 0)
return 0;
return id3_field_getbinarydata(field, length);
}
const id3_latin1_t* id3_metadata_getpicturemimetype(const struct id3_tag* tag, enum id3_picture_type picture_type)
{
union id3_field const *field;
struct id3_frame const *frame;
frame=id3_metadata_getpictureframebytype(tag, picture_type);
if (frame==0)
return 0;
field = id3_frame_field(frame, 1);
if (field == 0)
return 0;
return id3_field_getlatin1(field);
}
static id3_utf8_t *
tag_id3_getstring(const struct id3_frame *frame, unsigned i)
{
union id3_field *field;
const id3_ucs4_t *ucs4;
field = id3_frame_field(frame, i);
if (field == NULL)
return NULL;
ucs4 = id3_field_getstring(field);
if (ucs4 == NULL)
return NULL;
return id3_ucs4_utf8duplicate(ucs4);
}
QString mpgDecoder::getID3String( id3_tag* idtag, const char* field_frame )
{
QString str;
id3_frame* frame = id3_tag_findframe( idtag, field_frame, 0 );
if(frame)
{
id3_field* field = id3_frame_field(frame, 1);
if(field)
{
const id3_ucs4_t* id3_string = id3_field_getstrings(field, 0);
if(id3_string)
str = (char*)id3_ucs4_utf8duplicate(id3_string);
}
}
return str;
}
int id3_metadata_getfirstnonstandardpictype(const struct id3_tag* tag, enum id3_picture_type* picture_type)
{
int i=0;
union id3_field const *field;
struct id3_frame const *frame;
for (i=0; ; ++i)
{
frame = id3_tag_findframe(tag, "APIC", i);
if (frame == 0)
return 0;
field = id3_frame_field(frame, 2);
if (field == 0)
return 0;
if ((*picture_type=id3_field_getint(field))>ID3_PICTURE_TYPE_PUBLISHERLOGO)
break;
}
return 1;
}
struct id3_frame const* id3_metadata_getpictureframebytype(const struct id3_tag* tag, enum id3_picture_type picture_type)
{
int i;
union id3_field const *field;
struct id3_frame const *frame;
for (i=0; ; ++i)
{
frame = id3_tag_findframe(tag, "APIC", i);
if (frame == 0)
return 0;
field = id3_frame_field(frame, 2);
if (field == 0)
return 0;
if (id3_field_getint(field)==picture_type)
break;
}
return frame;
}
int id3_metadata_setrating(struct id3_tag* tag, char value)
{
union id3_field *field;
struct id3_frame *frame;
char popm[] = { 3, 53, 104, 154, 205, 255 };
if (value < '0' || value > '5')
return -1;
frame = id3_tag_findframe(tag, "POPM", 0);
if (frame == 0)
{
frame = id3_frame_new("POPM");
id3_tag_attachframe(tag, frame);
}
field = id3_frame_field(frame, 1);
if (field == 0)
return 0;
return id3_field_setint(field, popm[value - '0']);
}
char id3_metadata_getrating(const struct id3_tag* tag)
{
union id3_field const *field;
struct id3_frame const *frame;
frame = id3_tag_findframe(tag, "POPM", 0);
if (frame)
{
field = id3_frame_field(frame, 1);
if (field)
{ // media monkey's value
return (id3_field_getint(field) / 50) + '0';
}
}
else
{
const id3_ucs4_t *ucs4 = id3_metadata_getusertext(tag, "RATING");
if (ucs4 && *ucs4 > '0' && *ucs4 < '6')
return (char)*ucs4;
}
return '0';
}
void ExportMP2::AddFrame(struct id3_tag *tp, const wxString & n, const wxString & v, const char *name)
{
struct id3_frame *frame = id3_frame_new(name);
if (!n.IsAscii() || !v.IsAscii()) {
id3_field_settextencoding(id3_frame_field(frame, 0), ID3_FIELD_TEXTENCODING_UTF_16);
}
else {
id3_field_settextencoding(id3_frame_field(frame, 0), ID3_FIELD_TEXTENCODING_ISO_8859_1);
}
id3_ucs4_t *ucs4 =
id3_utf8_ucs4duplicate((id3_utf8_t *) (const char *) v.mb_str(wxConvUTF8));
if (strcmp(name, ID3_FRAME_COMMENT) == 0) {
// A hack to get around iTunes not recognizing the comment. The
// language defaults to XXX and, since it's not a valid language,
// iTunes just ignores the tag. So, either set it to a valid language
// (which one???) or just clear it. Unfortunately, there's no supported
// way of clearing the field, so do it directly.
id3_field *f = id3_frame_field(frame, 1);
memset(f->immediate.value, 0, sizeof(f->immediate.value));
id3_field_setfullstring(id3_frame_field(frame, 3), ucs4);
}
else if (strcmp(name, "TXXX") == 0) {
id3_field_setstring(id3_frame_field(frame, 2), ucs4);
free(ucs4);
ucs4 = id3_utf8_ucs4duplicate((id3_utf8_t *) (const char *) n.mb_str(wxConvUTF8));
id3_field_setstring(id3_frame_field(frame, 1), ucs4);
}
else {
id3_field_setstrings(id3_frame_field(frame, 1), 1, &ucs4);
}
free(ucs4);
id3_tag_attachframe(tp, frame);
}
static char
get_loader(lopt * opt, ImlibLoader ** loader)
{
union id3_field *field;
char const *data;
char ext[EXT_LEN + 2];
ext[EXT_LEN + 1] = '\0';
ext[0] = '.';
field = id3_frame_field(id3_tag_get_frame(opt->ctx->tag, opt->index - 1), 1);
data = (char const *)id3_field_getlatin1(field);
if (!data)
{
fprintf(stderr, "No mime type data found for image frame\n");
return 0;
}
if (strncasecmp(data, "image/", 6))
{
if (!strcmp(data, "-->"))
{
*loader = NULL;
return 1;
}
fprintf(stderr,
"Picture frame with unknown mime-type \'%s\' found\n", data);
return 0;
}
strncpy(ext + 1, data + 6, EXT_LEN);
if (!(*loader = __imlib_FindBestLoaderForFile(ext, 0)))
{
fprintf(stderr, "No loader found for extension %s\n", ext);
return 0;
}
return 1;
}
int BarFlyID3AddCover(struct id3_tag* tag, uint8_t const* cover_art,
size_t cover_size, BarSettings_t const* settings)
{
/*
* http://flac.sourceforge.net/api/group__flac__format.html#ga113
*/
int const PICTURE_TYPE_FRONT_COVER = 3;
char const BAR_FLY_ID3_FRAME_PICTURE[] = "APIC";
int exit_status = 0;
int status;
struct id3_frame* frame = NULL;
union id3_field* field;
int index;
char* mime_type;
assert(tag != NULL);
assert(cover_art != NULL);
assert(settings != NULL);
/*
* Get a new picture frame.
*/
frame = id3_frame_new(BAR_FLY_ID3_FRAME_PICTURE);
if (frame == NULL) {
BarUiMsg(settings, MSG_ERR, "Failed to create new frame (type = %s).\n",
BAR_FLY_ID3_FRAME_PICTURE);
goto error;
}
/*
* Go through all the frame fields setting the mime type, image type, and
* the image data.
*/
index = 0;
field = id3_frame_field(frame, index);
while (field != NULL) {
switch (id3_field_type(field)) {
/*
* Set the cover art mime type.
*/
case (ID3_FIELD_TYPE_LATIN1):
if ((cover_art[0] == 0xFF) && (cover_art[1] == 0xD8)) {
mime_type = "image/jpeg";
} else if ((cover_art[0] == 0x89) &&
(cover_art[1] == 0x50) &&
(cover_art[2] == 0x4E) &&
(cover_art[3] == 0x47) &&
(cover_art[4] == 0x0D) &&
(cover_art[5] == 0x0A) &&
(cover_art[6] == 0x1A) &&
(cover_art[7] == 0x0A)) {
mime_type = "image/png";
} else {
mime_type = NULL;
}
id3_field_setlatin1(field, (id3_latin1_t const*)mime_type);
break;
/*
* Designate this as the front cover.
*/
case (ID3_FIELD_TYPE_INT8):
id3_field_setint(field, PICTURE_TYPE_FRONT_COVER);
break;
/*
* Set the image data.
*/
case (ID3_FIELD_TYPE_BINARYDATA):
id3_field_setbinarydata(field, cover_art, cover_size);
break;
default:
break;
}
index++;
field = id3_frame_field(frame, index);
}
/*
* Attach the frame to the tag.
*/
status = id3_tag_attachframe(tag, frame);
if (status != 0) {
BarUiMsg(settings, MSG_ERR, "Failed to attach cover art frame.\n");
goto error;
}
goto end;
error:
if (frame != NULL) {
id3_frame_delete(frame);
}
exit_status = -1;
end:
return exit_status;
}
/* Parse mp3 RVA2 frame. Shamelessly stolen from madplay. */
static int parse_rva2(struct id3_tag * tag, struct replay_gain_info * replay_gain_info)
{
struct id3_frame const * frame;
id3_latin1_t const *id;
id3_byte_t const *data;
id3_length_t length;
int found;
enum {
CHANNEL_OTHER = 0x00,
CHANNEL_MASTER_VOLUME = 0x01,
CHANNEL_FRONT_RIGHT = 0x02,
CHANNEL_FRONT_LEFT = 0x03,
CHANNEL_BACK_RIGHT = 0x04,
CHANNEL_BACK_LEFT = 0x05,
CHANNEL_FRONT_CENTRE = 0x06,
CHANNEL_BACK_CENTRE = 0x07,
CHANNEL_SUBWOOFER = 0x08
};
found = 0;
/* relative volume adjustment information */
frame = id3_tag_findframe(tag, "RVA2", 0);
if (!frame) return 0;
id = id3_field_getlatin1(id3_frame_field(frame, 0));
data = id3_field_getbinarydata(id3_frame_field(frame, 1),
&length);
if (!id || !data) return 0;
/*
* "The 'identification' string is used to identify the
* situation and/or device where this adjustment should apply.
* The following is then repeated for every channel
*
* Type of channel $xx
* Volume adjustment $xx xx
* Bits representing peak $xx
* Peak volume $xx (xx ...)"
*/
while (length >= 4) {
unsigned int peak_bytes;
peak_bytes = (data[3] + 7) / 8;
if (4 + peak_bytes > length)
break;
if (data[0] == CHANNEL_MASTER_VOLUME) {
signed int voladj_fixed;
double voladj_float;
/*
* "The volume adjustment is encoded as a fixed
* point decibel value, 16 bit signed integer
* representing (adjustment*512), giving +/- 64
* dB with a precision of 0.001953125 dB."
*/
voladj_fixed = (data[1] << 8) | (data[2] << 0);
voladj_fixed |= -(voladj_fixed & 0x8000);
voladj_float = (double) voladj_fixed / 512;
replay_gain_info->tuples[REPLAY_GAIN_TRACK].peak = voladj_float;
replay_gain_info->tuples[REPLAY_GAIN_ALBUM].peak = voladj_float;
g_debug("parseRVA2: Relative Volume "
"%+.1f dB adjustment (%s)\n",
voladj_float, id);
found = 1;
break;
}
data += 4 + peak_bytes;
length -= 4 + peak_bytes;
}
return found;
}
int BarFlyID3AddFrame(struct id3_tag* tag, char const* type,
char const* value, BarSettings_t const* settings)
{
int exit_status = 0;
int status;
struct id3_frame* frame = NULL;
union id3_field* field;
id3_ucs4_t* ucs4 = NULL;
int index;
assert(tag != NULL);
assert(type != NULL);
assert(value != NULL);
assert(settings != NULL);
/*
* Create the frame.
*/
frame = id3_frame_new(type);
if (frame == NULL) {
BarUiMsg(settings, MSG_ERR, "Failed to create new frame (type = %s).\n",
type);
goto error;
}
frame->flags &= ~ID3_FRAME_FLAG_FORMATFLAGS;
/*
* Get the string list field of the frame.
*/
index = 0;
do {
field = id3_frame_field(frame, index);
index++;
} while (id3_field_type(field) != ID3_FIELD_TYPE_STRINGLIST);
assert(id3_field_type(field) == ID3_FIELD_TYPE_STRINGLIST);
/*
* Add the value as a string to the field.
*/
ucs4 = id3_latin1_ucs4duplicate((id3_latin1_t*)value);
if (ucs4 == NULL) {
BarUiMsg(settings, MSG_ERR, "Could not allocate memory.\n");
goto error;
}
status = id3_field_addstring(field, ucs4);
if (status != 0) {
BarUiMsg(settings, MSG_ERR, "Failed to set field value (value = %s).\n",
value);
goto error;
}
/*
* Attach the frame to the tag.
*/
status = id3_tag_attachframe(tag, frame);
if (status != 0) {
BarUiMsg(settings, MSG_ERR, "Failed to attach frame (type = %s).\n",
type);
goto error;
}
goto end;
error:
if (frame != NULL) {
id3_frame_delete(frame);
}
exit_status = -1;
end:
if (ucs4 != NULL) {
free(ucs4);
}
return exit_status;
}
