bool SFB::Audio::MP3Metadata::_ReadMetadata(CFErrorRef *error)
{
UInt8 buf [PATH_MAX];
if(!CFURLGetFileSystemRepresentation(mURL, false, buf, PATH_MAX))
return false;
std::unique_ptr<TagLib::FileStream> stream(new TagLib::FileStream((const char *)buf, true));
if(!stream->isOpen()) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” could not be opened for reading."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Input/output error"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("The file may have been renamed, moved, deleted, or you may not have appropriate permissions."), ""));
*error = CreateErrorForURL(Metadata::ErrorDomain, Metadata::InputOutputError, description, mURL, failureReason, recoverySuggestion);
}
return false;
}
TagLib::MPEG::File file(stream.get(), TagLib::ID3v2::FrameFactory::instance());
if(!file.isValid()) {
if(nullptr != error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” is not a valid MPEG file."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Not an MPEG file"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
*error = CreateErrorForURL(Metadata::ErrorDomain, Metadata::InputOutputError, description, mURL, failureReason, recoverySuggestion);
}
return false;
}
CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MP3"));
if(file.audioProperties()) {
auto properties = file.audioProperties();
AddAudioPropertiesToDictionary(mMetadata, properties);
// TODO: Is this too much information?
#if 0
switch(properties->version()) {
case TagLib::MPEG::Header::Version1:
switch(properties->layer()) {
case 1: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-1 Layer I")); break;
case 2: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-1 Layer II")); break;
case 3: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-1 Layer III")); break;
}
break;
case TagLib::MPEG::Header::Version2:
switch(properties->layer()) {
case 1: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-2 Layer I")); break;
case 2: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-2 Layer II")); break;
case 3: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-2 Layer III")); break;
}
break;
case TagLib::MPEG::Header::Version2_5:
switch(properties->layer()) {
case 1: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-2.5 Layer I")); break;
case 2: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-2.5 Layer II")); break;
case 3: CFDictionarySetValue(mMetadata, kFormatNameKey, CFSTR("MPEG-2.5 Layer III")); break;
}
break;
}
#endif
if(properties->xingHeader() && properties->xingHeader()->totalFrames())
AddIntToDictionary(mMetadata, kTotalFramesKey, (int)properties->xingHeader()->totalFrames());
}
if(file.APETag())
AddAPETagToDictionary(mMetadata, mPictures, file.APETag());
if(file.ID3v1Tag())
AddID3v1TagToDictionary(mMetadata, file.ID3v1Tag());
if(file.ID3v2Tag())
AddID3v2TagToDictionary(mMetadata, mPictures, file.ID3v2Tag());
return true;
}
bool MP3Metadata::ReadMetadata(CFErrorRef *error)
{
// Start from scratch
CFDictionaryRemoveAllValues(mMetadata);
CFDictionaryRemoveAllValues(mChangedMetadata);
UInt8 buf [PATH_MAX];
if(!CFURLGetFileSystemRepresentation(mURL, false, buf, PATH_MAX))
return false;
auto stream = new TagLib::FileStream(reinterpret_cast<const char *>(buf), true);
TagLib::MPEG::File file(stream, TagLib::ID3v2::FrameFactory::instance());
if(!file.isValid()) {
if(nullptr != error) {
CFStringRef description = CFCopyLocalizedString(CFSTR("The file “%@” is not a valid MPEG file."), "");
CFStringRef failureReason = CFCopyLocalizedString(CFSTR("Not an MPEG file"), "");
CFStringRef recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
*error = CreateErrorForURL(AudioMetadataErrorDomain, AudioMetadataInputOutputError, description, mURL, failureReason, recoverySuggestion);
CFRelease(description), description = nullptr;
CFRelease(failureReason), failureReason = nullptr;
CFRelease(recoverySuggestion), recoverySuggestion = nullptr;
}
return false;
}
CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MP3"));
if(file.audioProperties()) {
auto properties = file.audioProperties();
AddAudioPropertiesToDictionary(mMetadata, properties);
// TODO: Is this too much information?
#if 0
switch(properties->version()) {
case TagLib::MPEG::Header::Version1:
switch(properties->layer()) {
case 1: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-1 Layer I")); break;
case 2: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-1 Layer II")); break;
case 3: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-1 Layer III")); break;
}
break;
case TagLib::MPEG::Header::Version2:
switch(properties->layer()) {
case 1: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-2 Layer I")); break;
case 2: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-2 Layer II")); break;
case 3: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-2 Layer III")); break;
}
break;
case TagLib::MPEG::Header::Version2_5:
switch(properties->layer()) {
case 1: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-2.5 Layer I")); break;
case 2: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-2.5 Layer II")); break;
case 3: CFDictionarySetValue(mMetadata, kPropertiesFormatNameKey, CFSTR("MPEG-2.5 Layer III")); break;
}
break;
}
#endif
if(properties->xingHeader() && properties->xingHeader()->totalFrames())
AddIntToDictionary(mMetadata, kPropertiesTotalFramesKey, properties->xingHeader()->totalFrames());
}
if(file.APETag()) {
std::vector<AttachedPicture *> pictures;
AddAPETagToDictionary(mMetadata, pictures, file.APETag());
for(auto picture : pictures)
AddSavedPicture(picture);
}
if(file.ID3v1Tag())
AddID3v1TagToDictionary(mMetadata, file.ID3v1Tag());
if(file.ID3v2Tag()) {
std::vector<AttachedPicture *> pictures;
AddID3v2TagToDictionary(mMetadata, pictures, file.ID3v2Tag());
for(auto picture : pictures)
AddSavedPicture(picture);
}
return true;
}
