a cross-plataform, easy-to-use, non-intrusive C++ GUI library that runs on top of SDL, providing themeable widgets without learning Yet Another API
AeonWave is a cross platform, hardware accelerated, multi-threaded, and versatile stereo and 4D audio mixing library.
alogg offers facilities to decode, stream, and encode Ogg/Vorbis streams, and integrates those facilities with Allegro's datafile and sample loading routines.
amrwb is a shared library wrapper for the 3GPP AMR Adaptive Multi-Rate - Wideband (AMR-WB) Speech Codec (3GPP TS 26.204).
aseqmm is a C++ wrapper around the ALSA library sequencer interface using Qt4 objects, idioms, and style. The ALSA sequencer provides software support for MIDI technology on Linux.
ATS is a library of Lisp functions for spectral Analysis, Transformation, and Synthesis of sound based on a sinusoidal plus critical-band noise model.
for audio labelling. Features include onset detection (the complex task of labelling the beginning of notes and other sound events), silence detection (an easier but very useful task) and pitch detection (the estimation of the fundamental frequency of the sound)
Audio File Library
provides a uniform programming interface to standard digital audio file formats
av_convert is a C++ API for accessing audio/video files (AVI, Quicktime, YUV4MPEG stream, WAV, etc.). This functionality is provided by a library and a set of plugin modules for I/O backends and audio/video codecs.
Avifile is a library that allows you to read and write compressed AVI files in most common video & audio formats (Indeo® Video, DivX, etc.) under x86 Linux.
Bellagio OpenMAX IL Implementation
Bellagio is a sample implementation of OpenMAX IL for Linux. It enables software developers and ISVs to familiarize themselves with the OpenMAX IL API and to develop their own OpenMAX multimedia and streaming media components for mobile devices, including codecs, video I/O, and audio mixers. Included sample components comply with the OpenMAX base and interoperability profiles and can be tunnelled together.
biTStream is a set of C headers allowing simpler access to binary structures such as those specified by MPEG, DVB, IETF, etc.
Cardio is a simple to use library for playing various audio files. It includes support for a number of audio formats and is extensible via plugins.
a simple, highly portable, stand-alone, C++-based framework for manipulation of audio data
C++ Library for Audio and Music: to offer a complete, flexible and platform independent Sound Analysis/Synthesis C++ platform to meet current and future needs of all MTG projects
some C++ Classes handling graphs for amplitude and frequency and generating wavfiles out of these graphs. You can use a graphical user interface to generate these graphs. There is a little program to play the sounds with a midi-keyboard and some other tools
Digital Media Software Development Kit
The Digital Media Softprovides developers with a professional, comprehensive digital media API for creating programs that want to input,output or process digital media, including images, video,audio and various control protocols
DromeAudio is a small audio manipulation and playback library. It features a simple API for loading, generating, processing, and playing audio. Some of its features include loading and saving WAV sounds, loading Ogg Vorbis sounds, audio mixing/playback, and dynamic audio processing effects such as pitch shifting and echo.
Drumstick is a C++ wrapper around the ALSA library sequencer interface using Qt4 objects, idioms, and style.
EiffelMedia is a multimedia library for Eiffel.
EMIPLIB is a library to facilitate the development of programs that need to stream several kinds of media over IP. The library consists of several kinds of components that can be linked together in various ways, thereby providing a flexible framework.
a set of object oriented APIs to deal with media. It relies in the ffmpeg library, but provides developers with a much simpler programming interface
Freedaisy is a free implementation of Daisy book standard used to index MP3 files using XHTML and SMIL. Daisy is very used by visually impaired users, so they can listen a book with chapter in MP3.
Freeverb3 is a sound processing library which includes sampling rate scaling enabled version of freeverb with some fixes, extended implemantation of N Reverb by CCRMA and implementation of impulse response convolution reverb. This library's oversampling feature may provide higher quality of audio processing.
Gavl is a library for handling uncompressed audio and video data. It provides commonly used conversions like video scaling, colorspace conversion, audio resampling, and more. Many routines are available in multiple versions optimized for either high speed or better accuracy. Gavl is compatible with all major multimedia and codec APIs. The supported audio and video formats include low-end legacy formats as well as high definition formats for professional editing.
GD-Octave is a simple binding package that allows us to access the GD-Library from within the walls of Octave.
Gnonlin is a library for creating non-linear video editors. It works together with the GStreamer multimedia framework to give developers a powerful and flexible set of tools for quickly assembling applications which needs to handle non-linear video editing. Gnonlin is released under the LGPL.
GridFlow is a multi-dimensional data processing library for jMax, specialized in pictures and video.
The GUASI library implements a thread based generic asyncronous execution engine, to be used to give otherwise synchronous calls an asynchronous behavior. It can be used to wrap any synchronous call so that it can be scheduled for execution and whose result can be fetched at a later time (hence not blocking the submitter thread). The GUASI library can be used as a complement to standard event retrieval interfaces like poll(2), select(2), or epoll(4).
libh264bitstream provides a complete set of functions to read and write video streams conforming to the ITU H264 (MPEG4-AVC) video standard.
an open-source, cross-platform software development library for reading, writing, and manipulating ID3v1 and ID3v2 tags. It is an on-going project whose primary goals are full compliance with the ID3v2 standard, portability across several platforms, and providing a powerful and feature-rich API with a highly stable and efficient implementation
IEEE1394 IIDC Digital Camera Control Library
a library API for controlling an IEEE1394 camera compliant with the IIDC specifications. It also provides higher level functions for image capture
rrKlang is a free high level 2D and 3D cross platform sound engine and audio library which plays WAV, MP3, OGG and more file formats, written and usable in C++. It has all the features known from low level audio libraries as well as lots of useful features like a sophisticated streaming engine, extendable audio reading, single and multithreading modes, 3d audio emulation for low end hardware, a plugin system, multiple rolloff models and more.
a stream-oriented sound processing library. It has been designed around small DSP units that can be chained together to operate on the sound data stream
JBIG-KIT implements a highly effective data compression algorithm for bi-level high-resolution images such as fax pages or scanned documents. It provides a portable C library of compression and decompression functions with a documented interface that can easily be included into image or document processing software. In addition, JBIG-KIT provides ready-to-use compression and decompression programs with a simple command line interface (similar to the converters found in netpbm). It implements the specification ISO 11544 and ITU-T T.82, which is commonly referred to as the "JBIG1 standard".
libacarsd translates sound signals from aircrafts into human readable format.
libalinga is a C++ implementation of a multi-stream codec for the ALingA (Aligned Linguistic Annotation) format. It makes use of libogg++. Each ALingA stream holds at least one stream of annotation data, which is in the LingA format.
A libao driver for the polypaudio sound server.
libao-pulse is a libao driver for the PulseAudio sound server.
libavg is a high-level multimedia platform with a focus on interactive installations. It is meant to pick up where Macromedia Director leaves off and gives you high-quality hardware-accelerated visuals as well as easy and flexible authoring, testing and deployment. libavg integrates well with other open-source solutions for sound, networking and hardware device support, resulting in a complete and well-integrated package. It uses an xml-based layout language for screen design and python as scripting language.
libcdaudio is a multi-platform CD player development library which works with Linux, FreeBSD, OpenBSD, Solaris, and Irix. It includes a basic command set for controlling the
operation of the CD-ROM drive as well as functions for accessing both the CDDB, CD Index, and Cover Art Index.
implements the different protocols (CDDBP, HTTP, SMTP) to access data on a CDDB server. It tries to be as cross-platform as possible
GNU Compact Disc Input and Control Library
libCVD is a very portable and high performance C++ library for computer vision, image, and video processing.
libdce is a library to remotely invoke the hw accellerated codecs on IVA-HD via a syslink/rcm shim layer.
libdiscmage is a lib to rip/convert single tracks from proprietary image formats (like DiscJuggler or Nero ) for burning 'em with cdrecord. Example apps are included.
libdvbcsa is a free implementation of the DVB Common Scrambling Algorithm with encryption and decryption capabilities.
libdvbpsi is a very simple and fully portable library designed for MPEG TS and DVB PSI table decoding and generation.
libdvbsi is a library for controlling a DVB SI stream.
a cross-platform layer over libdvdread that provides low-level functions for DVD reading and seeking, as well as access to the DVD data (subtitles, languages, chapters)