MPEG Audio Decoder

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{{Notability|Products|date=August 2011}}

{{refimprove|date=November 2011}}

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{{Infobox software

|name = madplay

|screenshot =

|caption =

|developer = Robert Leslie

|released = 2000

|latest_release_version = 0.15.2b

|latest_release_date = {{release date|2004|02|23}}

|operating_system = Linux, FreeBSD, macOS

|programming language = C

|genre = Media player

|license = GPLv2{{cite web |title=GNU General Public License |url=https://www.underbit.com/resources/license/gpl |website=underbit |accessdate=6 September 2019}}

|website = {{URL|underbit.com/products/mad/}}

|repo = {{URL|https://sourceforge.net/projects/mad/}}

}}

MPEG Audio Decoder (MAD) is a GPL library for decoding files that have been encoded with an MPEG audio codec.{{cite web | url=http://www.linux-sound.org/mpeg.html | title=MPEG Players & Encoders | publisher=linux-sound.org | accessdate=November 3, 2011 | quote=MAD Robert Leslie's GPL'd MPEG audio decoder}} It was written by Robert Leslie and produced by Underbit Technologies. It was developed as a new implementation, on the ISO/IEC standards.{{cite web | url=http://freecode.com/projects/libmad | title=MAD | publisher=Freecode | accessdate=November 3, 2011 | quote=MAD is a high-quality MPEG audio decoder capable of 24-bit output. All computations are performed with fixed-point integer arithmetic, making it ideal for systems without a floating-point unit. The implementation is entirely new, based on the ISO/IEC standards.}}

It consists of libmad, a software library, and madplay, a command-line program for MP3 playback. libmad is notable for using only fixed-point arithmetic{{cite web | url=http://www.mp3-tech.org/programmer/decoding.html | title=MPEG source codes | publisher=mp3-tech.org | accessdate=November 3, 2011 | quote=MAD is an mpeg-1 decoder using only integer computation.}}{{cite web | url=http://manpages.ubuntu.com/manpages/oneiric/man1/madplay.1.html | title=madplay | publisher=Ubuntu Manpage Repository | accessdate=November 3, 2011 | quote=Among the special features of MAD are 24-bit PCM resolution and 100% fixed-point (integer) computation. | url-status=dead | archiveurl=https://web.archive.org/web/20120404160612/http://manpages.ubuntu.com/manpages/oneiric/man1/madplay.1.html | archivedate=April 4, 2012 }} while madplay is notable for its ReplayGain support.

Development ended decades ago, and vulnerabilities identified since then have gone unpatched.{{Cite web |title=CVE - CVE-2017-8373 |url=https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8373 |access-date=2024-02-13 |website=cve.mitre.org}}{{Cite web |title=CVE - CVE-2017-8374 |url=https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8374 |access-date=2024-02-13 |website=cve.mitre.org}}{{Cite web |title=CVE - CVE-2017-11552 |url=https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11552 |access-date=2024-02-13 |website=cve.mitre.org}}