bool Strip_Tag(LPCSTR filename)
{
// TODO:
// remove tag from file.
// do whatever is need to remove the supported tag from filename
// return true for successfull strip, false for failure
MP4FileHandle file;
file = MP4Modify(filename, 0, 0);
if (file == MP4_INVALID_FILE_HANDLE)
return false;
MP4MetadataDelete(file);
MP4Close(file);
return true;
}
bool Write_Tag(LPCSTR filename, void* tagHandle)
{
// TODO:
// read metadata from tagHandle and set each field to supported tag
// only TAGFIELD_* are supported (see QCDModTagEditor.h)
// example of how to get value from tagHandle
// use SetFieldA for ASCII or MultiBytes strings.
// use SetFieldW for UNICODE strings
//
// szwValue = ModInitTag.GetFieldW(tagHandle, TAGFIELD_ORCHESTRA);
// write tag to file
MP4FileHandle file = MP4_INVALID_FILE_HANDLE;
char dummy1[1024];
char temp[1024];
short dummy, dummy2;
#ifdef DEBUG_OUTPUT
in_mp4_DebugOutput("mp4_tag_write");
#endif
/* save Metadata changes */
tag_delete(&tags);
file = MP4Read(filename, 0);
if (file != MP4_INVALID_FILE_HANDLE)
{
ReadMP4Tag(file, &tags);
MP4Close(file);
file = MP4Modify(filename, 0, 0);
if (file != MP4_INVALID_FILE_HANDLE)
{
MP4MetadataDelete(file);
MP4Close(file);
}
}
file = MP4Modify(filename, 0, 0);
if (file == MP4_INVALID_FILE_HANDLE)
{
tag_delete(&tags);
//EndDialog(hwndDlg, wParam);
return false;
}
uGetDlgItemText(tagHandle, TAGFIELD_TITLE, dummy1, 1024);
tag_set_field(&tags, "title", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_COMPOSER, dummy1, 1024);
tag_set_field(&tags, "writer", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_ARTIST, dummy1, 1024);
tag_set_field(&tags, "artist", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_ALBUM, dummy1, 1024);
tag_set_field(&tags, "album", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_COMMENT, dummy1, 1024);
tag_set_field(&tags, "comment", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_GENRE, dummy1, 1024);
tag_set_field(&tags, "genre", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_YEAR, dummy1, 1024);
tag_set_field(&tags, "year", dummy1);
dummy = 0;
MP4GetMetadataTrack(file, (unsigned __int16*)&dummy, (unsigned __int16*)&dummy2);
memcpy(dummy1, ModInitTag.GetFieldA(tagHandle, TAGFIELD_TRACK), sizeof(dummy1));
dummy = atoi(dummy1);
wsprintf(temp, "%d/%d", dummy, dummy2);
tag_set_field(&tags, "track", temp);
//GetDlgItemText(hwndDlg, IDC_METADISK1, dummy1, 1024);
//dummy = atoi(dummy1);
//GetDlgItemText(hwndDlg, IDC_METADISK2, dummy1, 1024);
//dummy2 = atoi(dummy1);
//wsprintf(temp, "%d/%d", dummy, dummy2);
//tag_set_field(&tags, "disc", temp);
//GetDlgItemText(hwndDlg, IDC_METATEMPO, dummy1, 1024);
//tag_set_field(&tags, "tempo", dummy1);
//dummy3 = SendMessage(GetDlgItem(hwndDlg, IDC_METACOMPILATION), BM_GETCHECK, 0, 0);
//tag_set_field(&tags, "compilation", (dummy3 ? "1" : "0"));
uGetDlgItemText(tagHandle, TAGFIELD_ENCODER, dummy1, 1024);
tag_set_field(&tags, "tool", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_CONDUCTOR, dummy1, 1024);
tag_set_field(&tags, "CONDUCTOR", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_ORCHESTRA, dummy1, 1024);
tag_set_field(&tags, "ORCHESTRA", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_YEARCOMPOSED, dummy1, 1024);
tag_set_field(&tags, "YEARCOMPOSED", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_ORIGARTIST, dummy1, 1024);
tag_set_field(&tags, "ORIGARTIST", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_LABEL, dummy1, 1024);
tag_set_field(&tags, "LABEL", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_COPYRIGHT, dummy1, 1024);
tag_set_field(&tags, "COPYRIGHT", dummy1);
uGetDlgItemText(tagHandle, TAGFIELD_CDDBTAGID, dummy1, 1024);
tag_set_field(&tags, "CDDBTAGID", dummy1);
WriteMP4Tag(file, &tags);
MP4Close(file);
MP4Optimize(filename, NULL, 0);
/* ! */
return true;
}
bool MP4::File::save()
{
MP4Close(mp4file);
MP4FileHandle handle = MP4Modify(name());
if(handle == MP4_INVALID_FILE_HANDLE)
{
mp4file = MP4Read(name());
return false;
}
#ifdef MP4V2_HAS_WRITE_BUG
/* according to gtkpod we have to delete all meta data before modifying it,
save the stuff we would not touch */
// need to fetch/rewrite this only if we aren't going to anyway
uint8_t compilation = 0;
bool has_compilation = mp4tag->compilation() == MP4::Tag::Undefined ? MP4GetMetadataCompilation(handle, &compilation) : false;
char *tool = NULL;
MP4GetMetadataTool(handle, &tool);
MP4MetadataDelete(handle);
#endif
#define setmeta(val, tag) \
if(mp4tag->val().isNull()) { \
/*MP4DeleteMetadata##tag(handle);*/ \
MP4SetMetadata##tag(handle, ""); \
} else { \
MP4SetMetadata##tag(handle, mp4tag->val().toCString(true)); \
}
setmeta(title, Name);
setmeta(artist, Artist);
setmeta(album, Album);
setmeta(comment, Comment);
setmeta(genre, Genre);
char buf[100] = "";
if(mp4tag->year())
snprintf(buf, sizeof(buf), "%u", mp4tag->year());
MP4SetMetadataYear(handle, buf);
u_int16_t t1, t2;
MP4GetMetadataTrack(handle, &t1, &t2);
MP4SetMetadataTrack(handle, mp4tag->track(), t2);
if(mp4tag->bpm() != 0)
MP4SetMetadataTempo(handle, mp4tag->bpm());
if(mp4tag->compilation() != MP4::Tag::Undefined) {
MP4SetMetadataCompilation(handle, mp4tag->compilation());
}
MP4SetMetadataCoverArt(handle, mp4tag->cover().size() ? const_cast<u_int8_t *>( reinterpret_cast<const u_int8_t *>( mp4tag->cover().data() ) ) : 0, mp4tag->cover().size());
#ifdef MP4V2_HAS_WRITE_BUG
// set the saved data again
if(has_compilation)
MP4SetMetadataCompilation(handle, compilation);
if(tool)
{
MP4SetMetadataTool(handle, tool);
free(tool);
}
#endif
MP4Close(handle);
mp4file = MP4Read(name());
if(mp4file == MP4_INVALID_FILE_HANDLE)
{
fprintf(stderr, "reopen failed\n");
return false;
}
return true;
}
