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Backport of4dcf0b41c6b01f45e141https://github.com/taglib/taglib/pull/77 Tested with files larger than 2GB which have been created using sox -n -r 44100 -C 320 large.mp3 synth 58916 sine 440 channels 2 sox -n -r 44100 -C 0 large.flac synth 25459 sine 440 channels 2 sox -n -r 44100 -C 10 large.ogg synth 229806 sine 440 channels 2 sox -n -r 44100 large.wav synth 6692 sine 440 channels 2 ffmpeg -f lavfi -i "sine=frequency=440:duration=244676" -y large.m4a The only file which was readable with the tagreader example before this commit was large.ogg. The problem is that long on Windows is only 32-bit (also in LLP64 data model of 64-bit compilation target) and all the file offsets using long are too small for large files. Now long is replaced by offset_t (defined to be long long on Windows and off_t on UNIX) for such cases and some unsigned long are now size_t, which has the correct size even on Windows.
TagLib
TagLib Audio Metadata Library
TagLib is a library for reading and editing the metadata of several popular audio formats. Currently it supports both ID3v1 and ID3v2 for MP3 files, Ogg Vorbis comments and ID3 tags in FLAC, MPC, Speex, WavPack, TrueAudio, WAV, AIFF, MP4, APE, and ASF files.
TagLib is distributed under the GNU Lesser General Public License (LGPL) and Mozilla Public License (MPL). Essentially that means that it may be used in proprietary applications, but if changes are made to TagLib they must be contributed back to the project. Please review the licenses if you are considering using TagLib in your project.