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metadata.cpp
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metadata.cpp
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#include <algorithm>
#include <riff/aiff/aifffile.h>
#include <ape/apefile.h>
#include <ape/apetag.h>
#include <mpeg/mpegfile.h>
#include <mpeg/id3v1/id3v1genres.h>
#include <mpeg/id3v2/id3v2framefactory.h>
#include <mpeg/id3v2/frames/textidentificationframe.h>
#include "metadata.h"
#ifdef _WIN32
#include "win32util.h"
#endif
#include "strutil.h"
#include "mp4v2wrapper.h"
#include "cuesheet.h"
#include "taglibhelper.h"
namespace {
typedef const char *kvpair_t[2];
const char* lookup_by_key(const kvpair_t* begin, const kvpair_t *end,
const char *key)
{
kvpair_t search = { key, 0 };
auto entry =
std::lower_bound(begin, end, search,
[](const kvpair_t &a, const kvpair_t &b) -> bool {
return std::strcmp(a[0], b[0]) < 0;
});
if (entry < end && !std::strcmp((*entry)[0], key))
return (*entry)[1];
else
return 0;
}
}
namespace TextBasedTag {
const char *known_keys[][2] = {
{ "album", "album" },
{ "albumartist", "ALBUM ARTIST" },
{ "albumartistsort", "ALBUMARTISTSORT" },
{ "albumartistsortorder", "ALBUMARTISTSORT" },
{ "albumsort", "ALBUMSORT" },
{ "albumsortorder", "ALBUMSORT" },
{ "artist", "artist" },
{ "artistsort", "ARTISTSORT" },
{ "artistsortorder", "ARTISTSORT" },
{ "band", "BAND" },
{ "bpm", "tempo" },
{ "comment", "comments" },
{ "comments", "comments" },
{ "compilation", "iTunes:cpil" },
{ "composer", "composer" },
{ "composersort", "COMPOSERSORT" },
{ "composersortorder", "COMPOSERSORT" },
{ "contentgroup", "GROUPING" },
{ "copyright", "copyright" },
{ "date", "year" },
{ "description", "DESCRIPTION" },
{ "disc", "DISC NUMBER" },
{ "discnumber", "DISC NUMBER" },
{ "disctotal", "TOTAL DISCS" },
{ "encodedby", "encoding application" },
{ "encoder", "encoding application" },
{ "encodingapplication", "encoding application" },
{ "genre", "genre" },
{ "grouping", "GROUPING" },
{ "itunes:apid" "iTunes:apid" },
{ "itunes:akid" "iTunes:akid" },
{ "itunes:atid" "iTunes:atid" },
{ "itunes:catg" "iTunes:catg" },
{ "itunes:cmid" "iTunes:cmid" },
{ "itunes:cnid" "iTunes:cnid" },
{ "itunes:cpil" "iTunes:cpil" },
{ "itunes:geid" "iTunes:geid" },
{ "itunes:hdvd" "iTunes:hdvd" },
{ "itunes:keyw" "iTunes:keyw" },
{ "itunes:pcst" "iTunes:pcst" },
{ "itunes:pgap" "iTunes:pgap" },
{ "itunes:plid" "iTunes:plid" },
{ "itunes:purl" "iTunes:purl" },
{ "itunes:rtng" "iTunes:rtng" },
{ "itunes:sfid" "iTunes:sfid" },
{ "itunes:sosn" "iTunes:sosn" },
{ "itunes:stik" "iTunes:stik" },
{ "itunes:tvep" "iTunes:tvep" },
{ "itunes:tvnn" "iTunes:tvnn" },
{ "itunes:tvsh" "iTunes:tvsh" },
{ "itunes:tvsn" "iTunes:tvsn" },
{ "itunes:xid" "iTunes:xid" },
{ "itunescompilation", "iTunes:cpil" },
{ "longdescription", "LONG DESCRIPTION" },
{ "lyrics", "LYRICS" },
{ "performer", "PERFORMER" },
{ "recorddate", "recorded date" },
{ "recordeddate", "recorded date" },
{ "songwriter", "composer" },
{ "synopsis", "LONG DESCRIPTION" },
{ "tempo", "tempo" },
{ "timesignature", "time signature" },
{ "title", "title" },
{ "titlesort", "TITLESORT" },
{ "titlesortorder", "TITLESORT" },
{ "totaldiscs", "TOTAL DISCS" },
{ "totaltracks", "TOTAL TRACKS" },
{ "track", "track number" },
{ "tracknumber", "track number" },
{ "tracktotal", "TOTAL TRACKS" },
{ "tvepisodeid", "iTunes:tven" },
{ "tvnetwork", "iTunes:tvnn" },
{ "tvshow", "iTunes:tvsh" },
{ "tvshowsort", "iTunes:sosn" },
{ "unsyncedlyrics", "LYRICS" },
{ "year", "year" },
{ "yearrel", "year" },
};
std::string normalizeTagName(const char *name)
{
std::string sname =
strutil::slower(strutil::squeeze(std::string(name), " -_"));
bool contains_upper =
std::any_of(sname.begin(), sname.end(), [](char c) -> bool {
auto uc = static_cast<unsigned char>(c);
return isalpha(uc) && !islower(uc);
});
auto end = known_keys + util::sizeof_array(known_keys);
auto found = lookup_by_key(known_keys, end, sname.c_str());
return found ? found : contains_upper ? name : strutil::supper(name);
}
void normalizeTags(const std::map<std::string, std::string> &src,
std::map<std::string, std::string> *dst)
{
std::map<std::string, std::string> result;
unsigned track = 0, track_total = 0;
unsigned disc = 0, disc_total = 0;
std::for_each(src.begin(), src.end(), [&](decltype(*src.begin()) tag) {
std::string key = normalizeTagName(tag.first.c_str());
const char *sv = tag.second.c_str();
if (key == "track number")
sscanf(sv, "%u/%u", &track, &track_total);
else if (key == "TOTAL TRACKS")
sscanf(sv, "%u", &track_total);
else if (key == "DISC NUMBER")
sscanf(sv, "%u/%u", &disc, &disc_total);
else if (key == "TOTAL DISCS")
sscanf(sv, "%u", &disc_total);
else
result[key] = tag.second;
});
if (track) {
if (track_total)
result["track number"] =
strutil::format("%u/%u", track, track_total);
else
result["track number"] = strutil::format("%u", track);
}
if (disc) {
if (disc_total)
result["DISC NUMBER"] =
strutil::format("%u/%u", disc, disc_total);
else
result["DISC NUMBER"] = strutil::format("%u", disc);
}
dst->swap(result);
}
}
namespace ID3 {
const char *known_keys[][2] = {
{ "TALB", "album" },
{ "TBPM", "tempo" },
{ "TCMP", "iTunes:cpil" },
{ "TCOM", "composer" },
{ "TCON", "genre" },
{ "TCOP", "copyright" },
{" TDOR", "ORIGINAL RELEASE DATE" },
{ "TDRC", "recorded date" },
{ "TEXT", "lyricist" },
{ "TIT1", "GROUPING" },
{ "TIT2", "title" },
{ "TIT3", "SUBTITLE" },
{ "TKEY", "key signature" },
{ "TLAN", "LANGUAGE" },
{ "TMED", "MEDIA TYPE" },
{ "TOAL", "ORIGINAL ALBUM" },
{ "TOPE", "ORIGINAL ARTIST" },
{ "TOWN", "OWNER" },
{ "TPE1", "artist" },
{ "TPE2", "ALBUM ARTIST" },
{ "TPE3", "CONDUCTOR" },
{ "TPE4", "REMIXER" },
{ "TPOS", "DISC NUMBER" },
{ "TPUB", "PUBLISHER" },
{ "TRCK", "track number" },
{ "TRSN", "RADIO STATION" },
{ "TRSO", "RADIO STATION OWNER" },
{ "TSO2", "ALBUMARTISTSORT" },
{ "TSOA", "ALBUMSORT" },
{ "TSOC", "COMPOSERSORT" },
{ "TSOP", "ARTISTSORT" },
{ "TSOT", "TITLESORT" },
{ "TSRC", "ISRC" },
{ "TSST", "SET SUBTITLE" },
};
void fetchID3v2Tags(TagLib::ID3v2::Tag *tag,
std::map<std::string, std::string> *result)
{
std::map<std::string, std::string> tags;
auto frameList = tag->frameList();
std::for_each(frameList.begin(), frameList.end(),
[&](TagLib::ID3v2::Frame *frame) {
auto vID = frame->frameID();
std::string sID(vID.data(), vID.data() + vID.size());
if (sID == "TXXX") {
auto txframe =
dynamic_cast<TagLib::ID3v2::TextIdentificationFrame*>(frame);
auto fields = txframe->fieldList();
auto k = fields.begin()->toWString();
auto v = (++fields.begin())->toWString();
tags[strutil::w2us(k)] = strutil::w2us(v);
} else {
auto end = known_keys + util::sizeof_array(known_keys);
auto key = lookup_by_key(known_keys, end, sID.c_str());
if (key)
tags[key] = strutil::w2us(frame->toString().toWString());
}
});
TextBasedTag::normalizeTags(tags, result);
}
void fetchAiffID3Tags(int fd, std::map<std::string, std::string> *result)
{
util::FilePositionSaver _(fd);
lseek(fd, 0, SEEK_SET);
TagLibX::FDIOStreamReader stream(fd);
TagLib::RIFF::AIFF::File file(&stream, false);
auto tag = file.tag();
fetchID3v2Tags(tag, result);
}
void fetchMPEGID3Tags(int fd, std::map<std::string, std::string> *result)
{
util::FilePositionSaver _(fd);
lseek(fd, 0, SEEK_SET);
TagLibX::FDIOStreamReader stream(fd);
TagLib::MPEG::File file(&stream,
TagLib::ID3v2::FrameFactory::instance(),
false);
auto tag = file.ID3v2Tag();
fetchID3v2Tags(tag, result);
}
}
namespace M4A {
enum { TAG_TOTAL_DISCS = 1, TAG_TOTAL_TRACKS = 2 };
typedef struct fcc2name_t {
uint32_t fcc;
const char *name;
} fcc2name_t;
typedef struct name2fcc_t {
const char *name;
uint32_t fcc;
} name2fcc_t;
const fcc2name_t iTunes_fcc2name_map[] = {
{ 'aART', "ALBUM ARTIST" },
{ 'akID', "iTunes:akID" },
{ 'apID', "iTunes:apID" },
{ 'atID', "iTunes:atID" },
{ 'catg', "iTunes:catg" },
{ 'cmID', "iTunes:cmID" },
{ 'cnID', "iTunes:cnID" },
{ 'cpil', "iTunes:cpil" },
{ 'cprt', "copyright" },
{ 'desc', "DESCRIPTION" },
{ 'disk', "DISC NUMBER" },
{ 'geID', "iTunes:geID" },
{ 'gnre', "genre" },
{ 'hdvd', "iTunes:hdvd" },
{ 'keyw', "iTunes:keyw" },
{ 'ldes', "LONG DESCRIPTION" },
{ 'pcst', "iTunes:pcst" },
{ 'pgap', "iTunes:pgap" },
{ 'plID', "iTunes:plID" },
{ 'purd', "iTunes:purd" },
{ 'purl', "iTunes:purl" },
{ 'rtng', "iTunes:rtng" },
{ 'sfID', "iTunes:sfID" },
{ 'soaa', "ALBUMARTISTSORT" },
{ 'soal', "ALBUMSORT" },
{ 'soar', "ARTISTSORT" },
{ 'soco', "COMPOSERSORT" },
{ 'sonm', "TITLESORT" },
{ 'sosn', "iTunes:sosn" },
{ 'stik', "iTunes:stik" },
{ 'tmpo', "tempo" },
{ 'trkn', "track number" },
{ 'tvep', "iTunes:tvep" },
{ 'tvnn', "iTunes:tvnn" },
{ 'tvsh', "iTunes:tvsh" },
{ 'tvsn', "iTunes:tvsn" },
{ 'xid ', "iTunes:xid" },
{ FOURCC('\xa9','A','R','T'), "artist" },
{ FOURCC('\xa9','a','l','b'), "album" },
{ FOURCC('\xa9','c','m','t'), "comments" },
{ FOURCC('\xa9','d','a','y'), "year" },
{ FOURCC('\xa9','e','n','c'), "encoded by" },
{ FOURCC('\xa9','g','e','n'), "genre" },
{ FOURCC('\xa9','g','r','p'), "GROUPING" },
{ FOURCC('\xa9','l','y','r'), "LYRICS" },
{ FOURCC('\xa9','n','a','m'), "title" },
{ FOURCC('\xa9','t','o','o'), "encoding application" },
{ FOURCC('\xa9','w','r','t'), "composer" },
};
const name2fcc_t iTunes_name2fcc_map[] = {
{ "album", Tag::kAlbum },
{ "albumartist", Tag::kAlbumArtist },
{ "albumartistsort", 'soaa' },
{ "albumartistsortorder", 'soaa' },
{ "albumsort", 'soal' },
{ "albumsortorder", 'soal' },
{ "artist", Tag::kArtist },
{ "artistsort", 'soar' },
{ "artistsortorder", 'soar' },
{ "band", Tag::kAlbumArtist },
{ "bpm", Tag::kTempo },
{ "comment", Tag::kComment },
{ "comments", Tag::kComment },
{ "compilation", Tag::kCompilation },
{ "composer", Tag::kComposer },
{ "composersort", 'soco' },
{ "composersortorder", 'soco' },
{ "contentgroup", Tag::kGrouping },
{ "copyright", Tag::kCopyright },
{ "date", Tag::kDate },
{ "description", 'desc' },
{ "disc", Tag::kDisk },
{ "discnumber", Tag::kDisk },
{ "disctotal", TAG_TOTAL_DISCS },
{ "encodedby", FOURCC('\xa9','e','n','c') },
{ "encodingapplication", Tag::kTool },
{ "genre", Tag::kGenre },
{ "grouping", Tag::kGrouping },
{ "itunes:akid", 'akID' },
{ "itunes:apid", 'apID' },
{ "itunes:atid", 'atID' },
{ "itunes:catg", 'catg' },
{ "itunes:cmid", 'cmID' },
{ "itunes:cnid", 'cnID' },
{ "itunes:cpil", Tag::kCompilation },
{ "itunes:geid", 'gnID' },
{ "itunes:hdvd", 'hdvd' },
{ "itunes:keyw", 'keyw' },
{ "itunes:pcst", 'pcst' },
{ "itunes:pgap", 'pgap' },
{ "itunes:plid", 'plID' },
{ "itunes:purd", 'purd' },
{ "itunes:purl", 'purl' },
{ "itunes:rtng", 'rtng' },
{ "itunes:sfid", 'sfID' },
{ "itunes:sosn", 'sosn' },
{ "itunes:stik", 'stik' },
{ "itunes:tvep", 'tvep' },
{ "itunes:tvnn", 'tvnn' },
{ "itunes:tvsh", 'tvsh' },
{ "itunes:tvsn", 'tvsn' },
{ "itunes:xid", 'xid ' },
{ "itunescompilation", Tag::kCompilation },
{ "longdescription", 'ldes' },
{ "lyrics", Tag::kLyrics },
{ "recordeddate", Tag::kDate },
{ "tempo", Tag::kTempo },
{ "title", Tag::kTitle },
{ "titlesort", 'sonm' },
{ "titlesortorder", 'sonm' },
{ "totaldiscs", TAG_TOTAL_DISCS },
{ "totaltracks", TAG_TOTAL_TRACKS },
{ "track", Tag::kTrack },
{ "tracknumber", Tag::kTrack },
{ "tracktotal", TAG_TOTAL_TRACKS },
{ "unsyncedlyrics", Tag::kLyrics },
{ "year", Tag::kDate },
};
uint32_t getFourCCFromTagName(const char *name)
{
std::string sname =
strutil::slower(strutil::squeeze(std::string(name), " -_"));
name2fcc_t search = { sname.c_str(), 0 };
auto end = iTunes_name2fcc_map +
util::sizeof_array(iTunes_name2fcc_map);
auto entry =
std::lower_bound(iTunes_name2fcc_map, end, search,
[](const name2fcc_t &a,
const name2fcc_t &b) -> bool
{ return std::strcmp(a.name, b.name) < 0; });
return entry < end && !std::strcmp(entry->name, search.name)
? entry->fcc : 0;
}
void putNumberPair(std::map<uint32_t, std::string> *result,
uint32_t fcc, unsigned number, unsigned total)
{
if (number) {
if (total)
(*result)[fcc] = strutil::format("%u/%u", number, total);
else
(*result)[fcc] = strutil::format("%u", number);
}
}
void convertToM4ATags(const std::map<std::string, std::string> &src,
std::map<uint32_t, std::string> *shortTags,
std::map<std::string, std::string> *longTags)
{
std::map<uint32_t, std::string> shortTags_;
std::map<std::string, std::string> longTags_;
uint32_t id;
unsigned disc = 0, track = 0, disc_total = 0, track_total = 0;
std::for_each(src.begin(), src.end(), [&](decltype(*src.begin()) tag) {
if ((id = getFourCCFromTagName(tag.first.c_str())) == 0)
longTags_[tag.first] = tag.second;
else {
const char *val = tag.second.c_str();
switch (id) {
case TAG_TOTAL_DISCS:
std::sscanf(val, "%u", &disc_total); break;
case TAG_TOTAL_TRACKS:
std::sscanf(val, "%u", &track_total); break;
case Tag::kDisk:
std::sscanf(val, "%u/%u", &disc, &disc_total); break;
case Tag::kTrack:
std::sscanf(val, "%u/%u", &track, &track_total); break;
default:
shortTags_[id] = tag.second;
}
}
});
putNumberPair(&shortTags_, Tag::kTrack, track, track_total);
putNumberPair(&shortTags_, Tag::kDisk, disc, disc_total);
shortTags->swap(shortTags_);
longTags->swap(longTags_);
}
const char *getTagNameFromFourCC(uint32_t fcc)
{
fcc2name_t search = { fcc, 0 };
auto end = iTunes_fcc2name_map +
util::sizeof_array(iTunes_fcc2name_map);
auto entry =
std::lower_bound(iTunes_fcc2name_map, end, search,
[](const fcc2name_t &a,
const fcc2name_t &b) -> bool
{ return a.fcc < b.fcc; });
return entry < end && entry->fcc == search.fcc ? entry->name : 0;
}
std::string parseValue(uint32_t fcc, const MP4ItmfData &data)
{
uint8_t *value = data.value;
if (fcc == Tag::kGenreID3) {
unsigned v = (value[0] << 8) | value[1];
if (v > 0 && v < 255) {
auto x = static_cast<mp4v2::impl::itmf::GenreType>(v);
return mp4v2::impl::itmf::enumGenreType.toString(x);
}
} else if (fcc == Tag::kDisk || fcc == Tag::kTrack) {
unsigned index = (value[2] << 8) | value[3];
unsigned total = (value[4] << 8) | value[5];
return strutil::format("%u/%u", index, total);
} else if (data.typeCode == MP4_ITMF_BT_INTEGER) {
if (data.valueSize == 8) {
uint32_t high, low;
high = (value[0]<<24)|(value[1]<<16)|(value[2]<<8)|value[3];
low = (value[4]<<24)|(value[5]<<16)|(value[6]<<8)|value[7];
uint64_t value = (static_cast<uint64_t>(high) << 32) | low;
return strutil::format("%lld", value);
}
int v;
if (data.valueSize == 1)
v = value[0];
else if (data.valueSize == 2)
v = (value[0] << 8) | value[1];
else if (data.valueSize == 4)
v = (value[0]<<24)|(value[1]<<16)|(value[2]<<8)|value[3];
else
return "";
return strutil::format("%d", v);
} else if (data.typeCode == MP4_ITMF_BT_UTF8) {
char *vp = reinterpret_cast<char*>(value);
return std::string(vp, vp + data.valueSize);
}
return "";
}
void fetchTags(MP4FileX &file, std::map<std::string, std::string> *tags)
{
std::map<std::string, std::string> result;
try {
auto iL = mp4v2::impl::itmf::genericGetItems(file);
if (!iL) return;
std::shared_ptr<MP4ItmfItemList>
_(iL, mp4v2::impl::itmf::genericItemListFree);
for (size_t i = 0; i < iL->size; ++i) {
auto item = iL->elements[i];
uint32_t fcc = util::fourcc(item.code);
auto data = item.dataList.elements[0];
if (!data.value || !data.valueSize)
continue;
auto v = parseValue(fcc, data);
if (v.empty())
continue;
if (fcc == '----')
result[item.name] = v;
else {
const char *name = getTagNameFromFourCC(fcc);
if (name) result[name] = v;
}
}
tags->swap(result);
} catch (mp4v2::impl::Exception *e) {
handle_mp4error(e);
}
}
}
namespace CAF {
uint64_t next_chunk(int fd, char *name)
{
uint64_t size;
if (util::nread(fd, name, 4) != 4 || util::nread(fd, &size, 8) != 8)
return 0;
return util::b2host64(size);
}
bool get_info(int fd, std::vector<uint8_t> *info)
{
util::FilePositionSaver _(fd);
if (_lseeki64(fd, 8, SEEK_SET) != 8)
return false;
uint64_t chunk_size;
char chunk_name[4];
while ((chunk_size = next_chunk(fd, chunk_name)) > 0) {
if (std::memcmp(chunk_name, "info", 4)) {
if (_lseeki64(fd, chunk_size, SEEK_CUR) < 0)
break;
} else {
std::vector<uint8_t> buf(chunk_size);
if (util::nread(fd, &buf[0], buf.size()) != buf.size())
break;
info->swap(buf);
return true;
}
}
return false;
}
void fetchTags(const std::vector<uint8_t> &info,
std::map<std::string, std::string> *dict)
{
if (info.size() < 5)
return;
// inside of info tag is delimited with NUL char.
std::map<std::string, std::string> result;
std::vector<std::string> tokens;
{
const char *infop = reinterpret_cast<const char*>(info.data()) + 4;
const char *endp = infop + info.size() - 4;
do {
tokens.push_back(std::string(infop));
infop += tokens.back().size() + 1;
} while (infop < endp);
}
for (size_t i = 0; i < tokens.size() >> 1; ++i)
result[tokens[2 * i]] = tokens[2 * i + 1];
TextBasedTag::normalizeTags(result, dict);
}
bool fetchTags(int fd, std::map<std::string, std::string> *dict)
{
std::vector<uint8_t> info;
if (!get_info(fd, &info) || info.size() < 4)
return false;
fetchTags(info, dict);
return true;
}
}