本文整理汇总了C++中id3_tag::Iterator类的典型用法代码示例。如果您正苦于以下问题：C++ Iterator类的具体用法？C++ Iterator怎么用？C++ Iterator使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Iterator类的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: while
//following routine courtesy of John George
size_t ID3_GetPictureDataOfPicType(ID3_Tag* tag, const char* TempPicPath, ID3_PictureType pictype)
{
if (NULL == tag)
return 0;
else
{
ID3_Frame* frame = NULL;
ID3_Tag::Iterator* iter = tag->CreateIterator();
while (NULL != (frame = iter->GetNext() ))
{
if(frame->GetID() == ID3FID_PICTURE)
{
if(frame->GetField(ID3FN_PICTURETYPE)->Get() == (uint32)pictype)
break;
}
}
delete iter;
if (frame != NULL)
{
ID3_Field* myField = frame->GetField(ID3FN_DATA);
if (myField != NULL)
{
myField->ToFile(TempPicPath);
return (size_t)myField->Size();
}
else return 0;
}
else return 0;
}
}示例2: strlen
ID3_Frame* ID3_AddComment(ID3_Tag *tag, const char *text,
const char *desc, const char* lang, bool replace)
{
ID3_Frame* frame = NULL;
if (NULL != tag &&
NULL != text &&
NULL != desc &&
strlen(text) > 0)
{
bool bAdd = true;
if (replace)
{
ID3_RemoveComments(tag, desc);
}
else
{
// See if there is already a comment with this description
ID3_Tag::Iterator* iter = tag->CreateIterator();
ID3_Frame* frame = NULL;
while ((frame = iter->GetNext()) != NULL)
{
if (frame->GetID() == ID3FID_COMMENT)
{
char *tmp_desc = ID3_GetString(frame, ID3FN_DESCRIPTION);
if (strcmp(tmp_desc, desc) == 0)
{
bAdd = false;
}
delete [] tmp_desc;
if (!bAdd)
{
break;
}
}
}
delete iter;
}
if (bAdd)
{
frame = new ID3_Frame(ID3FID_COMMENT);
if (NULL != frame)
{
frame->GetField(ID3FN_LANGUAGE)->Set(lang);
frame->GetField(ID3FN_DESCRIPTION)->Set(desc);
frame->GetField(ID3FN_TEXT)->Set(text);
tag->AttachFrame(frame);
}
}
}
return frame;
}示例3: info
//***************************************************************************
bool Kwave::MP3Decoder::parseID3Tags(ID3_Tag &tag)
{
if (tag.NumFrames() < 1) return true; // no tags, nothing to do
QDate creation_date;
QTime creation_time;
int year = -1;
int month = -1;
int day = -1;
ID3_Tag::Iterator *it = tag.CreateIterator();
ID3_Frame *frame = 0;
Kwave::FileInfo info(metaData());
while (it && (frame = it->GetNext())) {
const ID3_FrameID id = frame->GetID();
const Kwave::FileProperty property = m_property_map.property(id);
const ID3_PropertyMap::Encoding encoding = m_property_map.encoding(id);
switch (encoding) {
case ID3_PropertyMap::ENC_TEXT_PARTINSET:
{
QString s = parseId3Frame2String(frame);
int cd = 0;
int cds = 0;
if (s.contains(QLatin1Char('/'))) {
int i = s.indexOf(QLatin1Char('/'));
cd = s.left(i).toInt();
cds = s.mid(i + 1).toInt();
} else {
cd = s.toInt();
}
if (cd > 0) info.set(Kwave::INF_CD , QVariant(cd));
if (cds > 0) info.set(Kwave::INF_CDS, QVariant(cds));
break;
}
case ID3_PropertyMap::ENC_TRACK_NUM:
{
QString s = parseId3Frame2String(frame);
int track = 0;
int tracks = 0;
if (s.contains(QLatin1Char('/'))) {
int i = s.indexOf(QLatin1Char('/'));
track = s.left(i).toInt();
tracks = s.mid(i + 1).toInt();
} else {
track = s.toInt();
}
if (track > 0) info.set(Kwave::INF_TRACK , QVariant(track));
if (tracks > 0) info.set(Kwave::INF_TRACKS, QVariant(tracks));
break;
}
case ID3_PropertyMap::ENC_TERMS_OF_USE:
// the same as ENC_COMMENT, but without "Description"
/* FALLTHROUGH */
case ID3_PropertyMap::ENC_COMMENT:
{
QString s = parseId3Frame2String(frame);
// optionally prepend language
char *lang = ID3_GetString(frame, ID3FN_LANGUAGE);
if (lang) {
s = _("[") + _(lang) + _("] ") + s;
ID3_FreeString(lang);
}
// append to already existing tag, separated by a slash
if (info.contains(property))
s = info.get(property).toString() + _(" / ") + s;
info.set(property, QVariant(s));
break;
}
case ID3_PropertyMap::ENC_GENRE_TYPE:
{
QString s = parseId3Frame2String(frame);
int genre = Kwave::GenreType::fromID3(s);
if (genre >= 0)
s = Kwave::GenreType::name(genre, false);
info.set(property, QVariant(s));
break;
}
case ID3_PropertyMap::ENC_LENGTH:
{
// length in ms -> convert this to samples
QString s = parseId3Frame2String(frame);
const double rate = info.rate();
bool ok = false;
const double ms = s.toDouble(&ok) + 0.5;
if (ok && (rate > 0)) {
// NOTE: this overwrites the length found in the header!
sample_index_t length = static_cast<sample_index_t>(
(rate * ms) / 1000.0);
info.setLength(length);
}
break;
}
case ID3_PropertyMap::ENC_TEXT_TIMESTAMP:
{
if (!creation_date.isValid()) {
QString s = parseId3Frame2String(frame);
switch (id)
//.........这里部分代码省略.........
示例4: if
MP3Data * MP3DataGenerator::readMetadata( const char * p_filePath)
{
// Set up file connection.
myID3_Tag = new ID3_Tag();
myID3_Tag->Link( p_filePath);
// Storage with default initialization.
MP3Data * myMP3Data = new MP3Data();
myMP3Data->setAll( "<undefinded>");
// Retrieve metadata.
ID3_Tag::Iterator * tagIter = myID3_Tag->CreateIterator();
ID3_Frame * myFrame = NULL;
while( NULL != ( myFrame = tagIter->GetNext()))
{
if( NULL != myFrame)
{
ID3_Field * myField = myFrame->GetField( ID3FN_TEXT);
// Check if current frame is part of the set aka a field of interest.
std::set<ID3_FrameID>::iterator current = interestingID3_FrameIDs->find( myFrame->GetID());
if ( NULL != myField && current != interestingID3_FrameIDs->end())
{
ID3_FrameID_LUT * myLUT = new ID3_FrameID_LUT();
std::string frameRealname = std::string( myLUT->getRealname( myFrame->GetID()));
// @TODO Show encoding in gui (optional)
if( myField->GetEncoding() == ID3TE_ASCII || ID3TE_ISO8859_1)
{
encoding += frameRealname + ": ISO8859_1 , ";
// Genre needs to be converted.
if( myFrame->GetID() == ID3FID_CONTENTTYPE) // ID3_FrameID = 32
{
const char * genre = myField->GetRawText();
// ID3V1 genre has is an int surrounded by round brackets; ID3V2 genre is text.
unsigned int genreIntegerAlias = removeBrackets( genre);
if( genreIntegerAlias < ID3_NR_OF_V1_GENRES && genre[0] == '(')
myMP3Data->setGenre( ID3_v1_genre_description[ genreIntegerAlias]);
else
myMP3Data->setGenre( genre);
}
// All other tags.
else if( myFrame->GetID() == ID3FID_TITLE)
myMP3Data->setTitle( myField->GetRawText());
else if( myFrame->GetID() == ID3FID_ALBUM)
myMP3Data->setAlbum( myField->GetRawText());
else if( myFrame->GetID() == ID3FID_YEAR)
myMP3Data->setYear( myField->GetRawText());
else if( myFrame->GetID() == ID3FID_TRACKNUM)
myMP3Data->setTracknumber( myField->GetRawText());
else if( myFrame->GetID() == ID3FID_LEADARTIST)
myMP3Data->setArtist( myField->GetRawText());
}
else if( myField->GetEncoding() == ID3TE_UTF8)
{
encoding += frameRealname + ": utf8 , ";
myMP3Data->setAll( "<unicode utf8 encoding>");
}
else if( myField->GetEncoding() == ID3TE_UNICODE || ID3TE_UTF16)
{
encoding += frameRealname + ": utf16 ,";
// @TODO Conversion to std::string ... myField->GetRawUnicodeText();
myMP3Data->setAll( "<unicode utf16 encoding>");
}
else if( myField->GetEncoding() == ID3TE_UTF16BE)
{
encoding += frameRealname + ": utf16be , ";
myMP3Data->setAll( "<unicode utf16be encoding>");
}
else if( myField->GetEncoding() == ID3TE_NUMENCODINGS)
{
encoding += frameRealname + ": numencodings , ";
myMP3Data->setAll( "<numencoding>");
}
else
{
encoding += frameRealname + ": unknown , ";
myMP3Data->setAll( "<<unknown encoding>");
}
}
}
}
// Retrieve file path and file name.
myMP3Data->setFilepath( p_filePath);
myMP3Data->setFilename( getFilename( p_filePath).c_str());
return myMP3Data;
}示例5: while
void MP3TagReader::ImportTags(MatroskaTagInfo *target) {
#ifdef USING_ID3LIB
// use an std::auto_ptr here to handle object cleanup automatically
ID3_Tag::Iterator *iter = m_Tag.CreateIterator();
ID3_Frame *myFrame = NULL;
while (NULL != (myFrame = iter->GetNext())) {
// do something with myFrame
//myFrame;
ID3_Field *textField = myFrame->GetField(ID3FN_TEXTENC);
ID3_Field *intField = myFrame->GetField(ID3FN_COUNTER);
if (myFrame->GetID() == ID3FID_PLAYCOUNTER) {
target->Tag_PlayCounter = intField->Get();
} else if (myFrame->GetID() == ID3FID_POPULARIMETER) {
target->Tag_Popularimeter = intField->Get();
} else if (myFrame->GetID() == ID3FID_ALBUM) {
MatroskaTagMultiTitleItem *newTagItem = new MatroskaTagMultiTitleItem();
newTagItem->Type = KaxTagMultiTitleType_AlbumMovieShowTitle;
newTagItem->Name = textField->GetRawUnicodeText();
target->AddMultiTitleItem(newTagItem);
} else if (myFrame->GetID() == ID3FID_BPM) {
target->Tag_BPM = intField->Get();
} else if (myFrame->GetID() == ID3FID_COMPOSER) {
MatroskaTagMultiEntityItem *newTagItem = new MatroskaTagMultiEntityItem();
newTagItem->Type = KaxTagMultiEntitiesType_Composer;
newTagItem->Name = textField->GetRawUnicodeText();
target->AddMultiEntityItem(newTagItem);
} else if (myFrame->GetID() == ID3FID_PLAYLISTDELAY) {
target->Tag_PlaylistDelay = intField->Get();
} else if (myFrame->GetID() == ID3FID_ENCODEDBY) {
MatroskaTagMultiEntityItem *newTagItem = new MatroskaTagMultiEntityItem();
newTagItem->Type = KaxTagMultiEntitiesType_EncodedBy;
newTagItem->Name = textField->GetRawUnicodeText();
target->AddMultiEntityItem(newTagItem);
} else if (myFrame->GetID() == ID3FID_LYRICIST) {
MatroskaTagMultiEntityItem *newTagItem = new MatroskaTagMultiEntityItem();
newTagItem->Type = KaxTagMultiEntitiesType_LyricistTextWriter;
newTagItem->Name = textField->GetRawUnicodeText();
target->AddMultiEntityItem(newTagItem);
} else if (myFrame->GetID() == ID3FID_TITLE) {
MatroskaTagMultiTitleItem *newTagItem = new MatroskaTagMultiTitleItem();
newTagItem->Type = KaxTagMultiTitleType_TrackTitle;
newTagItem->Name = textField->GetRawUnicodeText();
target->AddMultiTitleItem(newTagItem);
} else if (myFrame->GetID() == ID3FID_SUBTITLE) {
MatroskaTagMultiTitleItem *newTagItem = new MatroskaTagMultiTitleItem();
newTagItem->Type = KaxTagMultiTitleType_TrackTitle;
newTagItem->SubTitle = textField->GetRawUnicodeText();
target->AddMultiTitleItem(newTagItem);
}
}
delete iter;
#endif
};示例6: play_debug_meta
void play_debug_meta(char* filename){
ID3_Tag tag(filename);
ID3_Tag::Iterator* iter = tag.CreateIterator();
ID3_Frame* frame = NULL;
char buf[1000];
// Iconv conversion descriptor: UTF-16 -> UTF-8
iconv_t cd = iconv_open("UTF8","UTF16BE");
while (NULL != (frame = iter->GetNext()))
{
char* val = NULL;
field_text(&val, frame);
printf("Frame: type %d %s %s:\n", frame->GetID(), frame->GetTextID(), frame->GetDescription());
ID3_Frame::Iterator* fieldIter = frame->CreateIterator();
ID3_Field* field = NULL;
while (NULL != (field = fieldIter->GetNext())) {
printf(" Field: type ");
ID3_FieldType type = field->GetType();
switch(type) {
case ID3FTY_NONE:
printf("none"); break;
case ID3FTY_INTEGER:
printf("int"); break;
case ID3FTY_BINARY:
printf("binary"); break;
case ID3FTY_TEXTSTRING:
field->Get(buf, 1000);
printf("text with %d items, encoding ", field->GetNumTextItems());
switch(field->GetEncoding()){
case ID3TE_UTF16: printf("UTF-16");
if ( cd != (iconv_t) -1 ) {
char* in = (char*) field->GetRawUnicodeText();
size_t insize = field->Size();
char* bufptr = buf;
size_t bufsize = 1000;
size_t rc = 0;
// Initialize iconv state
if( iconv(cd, NULL, NULL, &bufptr, &bufsize) == (size_t) -1 ){
printf("iconv init Failed\n");
}
if ( (rc = iconv(cd, &in, &insize, &bufptr, &bufsize)) != (size_t) -1 ) {
*bufptr = '\0';
printf(": '%s' (%d chars)\n", buf, rc);
} else {
printf("<conversion using iconv failed>");
perror("iconv");
}
}
break;
case ID3TE_UTF16BE: printf("UTF-16BE");
printf(": '%s'", buf);
break;
case ID3TE_UTF8: printf("UTF-8");
printf(": '%s'", buf);
break;
case ID3TE_NONE: printf("none");
printf(": '%s'", buf);
break;
case ID3TE_ISO8859_1: printf("ISO-8859-1/ASCII");
printf(": '%s'", buf);
break;
}
break;
}
printf("\n");
}
delete fieldIter;
delete [] val;
}
delete iter;
iconv_close(cd);
}