diff options
Diffstat (limited to 'taglib/fileref.cpp')
| -rw-r--r-- | taglib/fileref.cpp | 259 |
1 files changed, 199 insertions, 60 deletions
diff --git a/taglib/fileref.cpp b/taglib/fileref.cpp index dca69f6a..935c371b 100644 --- a/taglib/fileref.cpp +++ b/taglib/fileref.cpp @@ -28,6 +28,7 @@ ***************************************************************************/ #include <tfile.h> +#include <tfilestream.h> #include <tstring.h> #include <tdebug.h> #include <trefcounter.h> @@ -59,60 +60,148 @@ namespace typedef List<const FileRef::FileTypeResolver *> ResolverList; ResolverList fileTypeResolvers; - // Templatized internal functions. T should be String or IOStream*. + // Detect the file type by user-defined resolvers. - template <typename T> - FileName toFileName(T arg); - - template <> - FileName toFileName<IOStream *>(IOStream *arg) + File *detectByResolvers(FileName fileName, bool readAudioProperties, + AudioProperties::ReadStyle audioPropertiesStyle) { - return arg->name(); - } + ResolverList::ConstIterator it = fileTypeResolvers.begin(); + for(; it != fileTypeResolvers.end(); ++it) { + File *file = (*it)->createFile(fileName, readAudioProperties, audioPropertiesStyle); + if(file) + return file; + } - template <> - FileName toFileName<FileName>(FileName arg) - { - return arg; + return 0; } - template <typename T> - File *resolveFileType(T arg, bool readProperties, - AudioProperties::ReadStyle style); + // Detect the file type based on the file extension. - template <> - File *resolveFileType<IOStream *>(IOStream *arg, bool readProperties, - AudioProperties::ReadStyle style) + File* detectByExtension(IOStream *stream, bool readAudioProperties, + AudioProperties::ReadStyle audioPropertiesStyle) { +#ifdef _WIN32 + const String s = stream->name().toString(); +#else + const String s(stream->name()); +#endif + + String ext; + const int pos = s.rfind("."); + if(pos != -1) + ext = s.substr(pos + 1).upper(); + + // If this list is updated, the method defaultFileExtensions() should also be + // updated. However at some point that list should be created at the same time + // that a default file type resolver is created. + + if(ext.isEmpty()) + return 0; + + // .oga can be any audio in the Ogg container. So leave it to content-based detection. + + if(ext == "MP3") + return new MPEG::File(stream, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); + if(ext == "OGG") + return new Ogg::Vorbis::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "FLAC") + return new FLAC::File(stream, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); + if(ext == "MPC") + return new MPC::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "WV") + return new WavPack::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "SPX") + return new Ogg::Speex::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "OPUS") + return new Ogg::Opus::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "TTA") + return new TrueAudio::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "M4A" || ext == "M4R" || ext == "M4B" || ext == "M4P" || ext == "MP4" || ext == "3G2" || ext == "M4V") + return new MP4::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "WMA" || ext == "ASF") + return new ASF::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "AIF" || ext == "AIFF" || ext == "AFC" || ext == "AIFC") + return new RIFF::AIFF::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "WAV") + return new RIFF::WAV::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "APE") + return new APE::File(stream, readAudioProperties, audioPropertiesStyle); + // module, nst and wow are possible but uncommon extensions + if(ext == "MOD" || ext == "MODULE" || ext == "NST" || ext == "WOW") + return new Mod::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "S3M") + return new S3M::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "IT") + return new IT::File(stream, readAudioProperties, audioPropertiesStyle); + if(ext == "XM") + return new XM::File(stream, readAudioProperties, audioPropertiesStyle); + return 0; } - template <> - File *resolveFileType<FileName>(FileName arg, bool readProperties, - AudioProperties::ReadStyle style) + // Detect the file type based on the actual content of the stream. + + File *detectByContent(IOStream *stream, bool readAudioProperties, + AudioProperties::ReadStyle audioPropertiesStyle) { - ResolverList::ConstIterator it = fileTypeResolvers.begin(); - for(; it != fileTypeResolvers.end(); ++it) { - File *file = (*it)->createFile(arg, readProperties, style); - if(file) + File *file = 0; + + if(MPEG::File::isSupported(stream)) + file = new MPEG::File(stream, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); + else if(Ogg::Vorbis::File::isSupported(stream)) + file = new Ogg::Vorbis::File(stream, readAudioProperties, audioPropertiesStyle); + else if(Ogg::FLAC::File::isSupported(stream)) + file = new Ogg::FLAC::File(stream, readAudioProperties, audioPropertiesStyle); + else if(FLAC::File::isSupported(stream)) + file = new FLAC::File(stream, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); + else if(MPC::File::isSupported(stream)) + file = new MPC::File(stream, readAudioProperties, audioPropertiesStyle); + else if(WavPack::File::isSupported(stream)) + file = new WavPack::File(stream, readAudioProperties, audioPropertiesStyle); + else if(Ogg::Speex::File::isSupported(stream)) + file = new Ogg::Speex::File(stream, readAudioProperties, audioPropertiesStyle); + else if(Ogg::Opus::File::isSupported(stream)) + file = new Ogg::Opus::File(stream, readAudioProperties, audioPropertiesStyle); + else if(TrueAudio::File::isSupported(stream)) + file = new TrueAudio::File(stream, readAudioProperties, audioPropertiesStyle); + else if(MP4::File::isSupported(stream)) + file = new MP4::File(stream, readAudioProperties, audioPropertiesStyle); + else if(ASF::File::isSupported(stream)) + file = new ASF::File(stream, readAudioProperties, audioPropertiesStyle); + else if(RIFF::AIFF::File::isSupported(stream)) + file = new RIFF::AIFF::File(stream, readAudioProperties, audioPropertiesStyle); + else if(RIFF::WAV::File::isSupported(stream)) + file = new RIFF::WAV::File(stream, readAudioProperties, audioPropertiesStyle); + else if(APE::File::isSupported(stream)) + file = new APE::File(stream, readAudioProperties, audioPropertiesStyle); + + // isSupported() only does a quick check, so double check the file here. + + if(file) { + if(file->isValid()) return file; + else + delete file; } return 0; } - template <typename T> - File* createInternal(T arg, bool readAudioProperties, + // Internal function that supports FileRef::create(). + // This looks redundant, but necessary in order not to change the previous + // behavior of FileRef::create(). + + File* createInternal(FileName fileName, bool readAudioProperties, AudioProperties::ReadStyle audioPropertiesStyle) { - File *file = resolveFileType(arg, readAudioProperties, audioPropertiesStyle); + File *file = detectByResolvers(fileName, readAudioProperties, audioPropertiesStyle); if(file) return file; #ifdef _WIN32 - const String s = toFileName(arg).toString(); + const String s = fileName.toString(); #else - const String s(toFileName(arg)); + const String s(fileName); #endif String ext; @@ -120,56 +209,52 @@ namespace if(pos != -1) ext = s.substr(pos + 1).upper(); - // If this list is updated, the method defaultFileExtensions() should also be - // updated. However at some point that list should be created at the same time - // that a default file type resolver is created. - if(ext.isEmpty()) return 0; if(ext == "MP3") - return new MPEG::File(arg, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); + return new MPEG::File(fileName, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); if(ext == "OGG") - return new Ogg::Vorbis::File(arg, readAudioProperties, audioPropertiesStyle); + return new Ogg::Vorbis::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "OGA") { /* .oga can be any audio in the Ogg container. First try FLAC, then Vorbis. */ - File *file = new Ogg::FLAC::File(arg, readAudioProperties, audioPropertiesStyle); + File *file = new Ogg::FLAC::File(fileName, readAudioProperties, audioPropertiesStyle); if(file->isValid()) return file; delete file; - return new Ogg::Vorbis::File(arg, readAudioProperties, audioPropertiesStyle); + return new Ogg::Vorbis::File(fileName, readAudioProperties, audioPropertiesStyle); } if(ext == "FLAC") - return new FLAC::File(arg, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); + return new FLAC::File(fileName, ID3v2::FrameFactory::instance(), readAudioProperties, audioPropertiesStyle); if(ext == "MPC") - return new MPC::File(arg, readAudioProperties, audioPropertiesStyle); + return new MPC::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "WV") - return new WavPack::File(arg, readAudioProperties, audioPropertiesStyle); + return new WavPack::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "SPX") - return new Ogg::Speex::File(arg, readAudioProperties, audioPropertiesStyle); + return new Ogg::Speex::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "OPUS") - return new Ogg::Opus::File(arg, readAudioProperties, audioPropertiesStyle); + return new Ogg::Opus::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "TTA") - return new TrueAudio::File(arg, readAudioProperties, audioPropertiesStyle); + return new TrueAudio::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "M4A" || ext == "M4R" || ext == "M4B" || ext == "M4P" || ext == "MP4" || ext == "3G2" || ext == "M4V") - return new MP4::File(arg, readAudioProperties, audioPropertiesStyle); + return new MP4::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "WMA" || ext == "ASF") - return new ASF::File(arg, readAudioProperties, audioPropertiesStyle); + return new ASF::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "AIF" || ext == "AIFF" || ext == "AFC" || ext == "AIFC") - return new RIFF::AIFF::File(arg, readAudioProperties, audioPropertiesStyle); + return new RIFF::AIFF::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "WAV") - return new RIFF::WAV::File(arg, readAudioProperties, audioPropertiesStyle); + return new RIFF::WAV::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "APE") - return new APE::File(arg, readAudioProperties, audioPropertiesStyle); + return new APE::File(fileName, readAudioProperties, audioPropertiesStyle); // module, nst and wow are possible but uncommon extensions if(ext == "MOD" || ext == "MODULE" || ext == "NST" || ext == "WOW") - return new Mod::File(arg, readAudioProperties, audioPropertiesStyle); + return new Mod::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "S3M") - return new S3M::File(arg, readAudioProperties, audioPropertiesStyle); + return new S3M::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "IT") - return new IT::File(arg, readAudioProperties, audioPropertiesStyle); + return new IT::File(fileName, readAudioProperties, audioPropertiesStyle); if(ext == "XM") - return new XM::File(arg, readAudioProperties, audioPropertiesStyle); + return new XM::File(fileName, readAudioProperties, audioPropertiesStyle); return 0; } @@ -178,15 +263,18 @@ namespace class FileRef::FileRefPrivate : public RefCounter { public: - FileRefPrivate(File *f) : + FileRefPrivate() : RefCounter(), - file(f) {} + file(0), + stream(0) {} ~FileRefPrivate() { delete file; + delete stream; } - File *file; + File *file; + IOStream *stream; }; //////////////////////////////////////////////////////////////////////////////// @@ -194,24 +282,27 @@ public: //////////////////////////////////////////////////////////////////////////////// FileRef::FileRef() : - d(new FileRefPrivate(0)) + d(new FileRefPrivate()) { } FileRef::FileRef(FileName fileName, bool readAudioProperties, AudioProperties::ReadStyle audioPropertiesStyle) : - d(new FileRefPrivate(createInternal(fileName, readAudioProperties, audioPropertiesStyle))) + d(new FileRefPrivate()) { + parse(fileName, readAudioProperties, audioPropertiesStyle); } FileRef::FileRef(IOStream* stream, bool readAudioProperties, AudioProperties::ReadStyle audioPropertiesStyle) : - d(new FileRefPrivate(createInternal(stream, readAudioProperties, audioPropertiesStyle))) + d(new FileRefPrivate()) { + parse(stream, readAudioProperties, audioPropertiesStyle); } FileRef::FileRef(File *file) : - d(new FileRefPrivate(file)) + d(new FileRefPrivate()) { + d->file = file; } FileRef::FileRef(const FileRef &ref) : @@ -333,3 +424,51 @@ File *FileRef::create(FileName fileName, bool readAudioProperties, { return createInternal(fileName, readAudioProperties, audioPropertiesStyle); } + +//////////////////////////////////////////////////////////////////////////////// +// private members +//////////////////////////////////////////////////////////////////////////////// + +void FileRef::parse(FileName fileName, bool readAudioProperties, + AudioProperties::ReadStyle audioPropertiesStyle) +{ + // Try user-defined resolvers. + + d->file = detectByResolvers(fileName, readAudioProperties, audioPropertiesStyle); + if(d->file) + return; + + // Try to resolve file types based on the file extension. + + d->stream = new FileStream(fileName); + d->file = detectByExtension(d->stream, readAudioProperties, audioPropertiesStyle); + if(d->file) + return; + + // At last, try to resolve file types based on the actual content. + + d->file = detectByContent(d->stream, readAudioProperties, audioPropertiesStyle); + if(d->file) + return; + + // Stream have to be closed here if failed to resolve file types. + + delete d->stream; + d->stream = 0; +} + +void FileRef::parse(IOStream *stream, bool readAudioProperties, + AudioProperties::ReadStyle audioPropertiesStyle) +{ + // User-defined resolvers won't work with a stream. + + // Try to resolve file types based on the file extension. + + d->file = detectByExtension(stream, readAudioProperties, audioPropertiesStyle); + if(d->file) + return; + + // At last, try to resolve file types based on the actual content of the file. + + d->file = detectByContent(stream, readAudioProperties, audioPropertiesStyle); +} |