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']);
}
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;
}
