uos
uos (United OpenLib of Sound) is a multi-platform package of audio handling routines that unifies the best open-source audio libraries.
Features
- Play .mp3, .ogg, .wav, .flac, .m4a, .opus, .mod, .it, .s3m, .xm and cdrom audio files.
- Deal with 16, 32 integer or float 32 bit resolution.
- Record all types of input into wav or ogg file with 16 or 32 bit resolution.
- Add DSP effects and filters, however many you want and record it.
- Play multiple inputs and outputs simultaneously.
- Internet audio streaming of mp3, aac and opus files.
- Produce sound by the build-in synthesizer.
Uus can use the SoundTouch, PortAudio, SndFile, Mpg123, Faad, OpusFile, Libxmp and Mp4ff audio libraries.
Included in the package: Examples and binary libraries for Linux 32/64, arm aarch64 Raspberry Pi, Windows 32/64, macOS 32/64 and FreeBSD 32/64.
Download
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uoslib
Pascal users should use uos instead.
uoslib is the Universal Library version of uos unit and is accessible from Pascal and all other languages (C, Java, ...).
Some methods of uos are not accessible.
Included in the package: Examples and binary libraries for Linux 32/64, Windows 32/64, macOS 32/64 and FreeBSD 32/64.
Install
The best way to show how uos works is to look at the examples in /uos/examples package. All is included, you only have to compile the demos and run it...
Here some examples how to use uos :
- Copy all the files in /uos/src/ into the directory of your project.
- add uos_flat or uos in your uses section. (for uoslib add uoslib_h)
- uos_flat => All is done by the unit. The procedures are more "universal", same syntax as uoslib.
- uos => The application must declare uos class and variables. The procedures can be used as oop way.
- All the examples in uos packages use uos_flat. There is a example using only uos => SimplePlayer_noflat
Those libraries can be used by uos:
- PortAudio for dealing with audio devices of sound card,
- SndFile for decoding wav, flac, org audio files,
- Mpg123 for decoding mp3 audio files,
- Faad and Mp4ff for decoding m4a audio files,
- OpusFile for decoding opus audio files,
- Libxmp for decoding mod, it, s3m, xm audio files,
- fdkaac for decoding aac web-stream audio files.
- SoundTouch plugin for changing tempo of any type of audio files,
- bs2b plugin to apply stereo to binaural effect.
You may load those libraries with:
uos_LoadLib( pchar(PortAudioFileName), pchar(SndFileFileName), pchar(Mpg123FileName), pchar(Mp4ffFileName), pchar(FaadFileName), pchar(OpusFileFileName), pchar(LibxmpFileFileName),pchar(fdkaacFilename) );
If some libraries are not needed, just replace the filename with "nil".
If you replace the filename with pchar('system'), the library of the system will be used (if exists).
WARNING: Do not forget to call uos_free() when application terminates.
Play a file 'MySong.mp3':
begin
uos_LoadLib( PortAudioFileName, nil, Mpg123FileName, nil, nil, nil, nil, nil); // only PortAudio and Mpg123 are needed.
uos_CreatePlayer( 0 ); // you may create how many players you want, from 0 to to what you computer can do...
uos_AddIntoDevOut( 0 ); // Add Output with default parameters
uos_AddFromFile( 0, 'MySong.mp3' ); // Input from audio file
// And let's play it...
uos_Play(0); // Play the song...
end;
...
uos_free; // Call this at end of application.
Play a sound file with some dsp effects (only for uos, in future for uoslib too):
begin
uos_LoadLib( pchar(PortAudioFileName), nil, pchar(Mpg123FileName), nil, nil, nil, nil, nil); // only PortAudio and Mpg123 are needed.
uos_CreatePlayer( 0 ); // First create the player:
uos_AddIntoDevOut( 0 ); // Add Output with default parameters
uos_AddFromFile( 0, 'MySong.mp3' ); // Input from audio file
uos_InputAddDSP( 0, 1 ); // Add as many dsp effects you want
uos_InputAddDSP( 0, 2 );
uos_Play( 0 ); // Play the song with DSP effect...
end;
...
uos_free; // Call this at end of application.
Listen to your mic into your loudspeakers (for uoslib too) :
begin
uos_LoadLib( pchar(PortAudioFileName), nil, nil, nil, nil, nil, nil, nil); // only PortAudio is needed.
uos_CreatePlayer( 0 );
uos_AddIntoDevOut( 0 );
uos_AddFromDevIn( 0 ); // Input from IN Device
uos_Play( 0 ); // Listen to your mic in your loudspeakers...
end;
...
uos_free; // Call this at end of application.
Now, listen to your mic, listen to a mp3, apply some effects and record the mic into wav file at same time:
begin
uos_LoadLib( pchar(PortAudioFileName), pchar(SndFileFileName), pchar(Mpg123FileName), nil, nil, nil, nil, nil);
uos_CreatePlayer( 0 );
uos_AddIntoDevOut( 0 ) ; // Output into OUT Device
uos_AddIntoFile( 0, 'Myrecord.wav' ); // Output into wav file
uos_AddFromDevIn( 0 ); // Input from IN Device
uos_InputAddDSP( 0, 1 ); // Add as many dsp's you want
uos_InputAddDSP( 0, 2 );
uos_CreatePlayer( 1 );
uos_AddFromFile( 1, 'MySong.mp3' ); // the background audio file
uos_AddIntoDevOut( 1 ) ; // Output into OUT1 Device;
uos_Play(0); // Listen your mic with DSP effects and record it ...
uos_Play(1); // Listen to mp3 while recording
end;
...
uos_free; // Call this at end of application.
Syntax
Here are the basic uos methods. Each method has its equivalent with arguments for custom parameters.
Initialization methods:
uos_LoadLib(); // Load dynamic libraries for uos uos_LoadLibs(); // Load dynamic libraries for uoslibs uos_UnLoadLib(); // To unload libraries. uos_Free; // To use when application terminate.
Output
uos_AddIntoDevOut(); // Output into OUT Device uos_AddIntoFile(); // Output into Wav File uos_AddIntoMemoryBuffer() // Add a Output into memory buffer uos_AddIntoMemoryStream() // Add a Output into memory stream uos_AddIntoIceServer() // Add a Output into a IceCast server uos_AddIntoFileFromMem() // Add a Output into audio wav file from TMemoryStream
Input
uos_AddFromDevIn(); // Input from IN device uos_AddFromFile(); // Input from Audio File uos_AddFromMemoryBuffer(); // Input from decoded pcm buffer uos_AddFromMemoryStream(); // Input from a TMemoryStream of Audio File uos_AddFromFileIntoMemory(); // Input from audio file and stored into memory buffer uos_AddFromURL(); // Input from internet URL mp3/opus/aac files uos_AddFromSynth(; // Input form built-in Synthesizer uos_InputLength(); // Length of Input in samples uos_InputPosition(); // Get position uos_InputSeek(); // Change position in byte uos_InputSeekTime(); // Change position in time uos_InputSeekSeconds(); // Change position in second
Player
uos_Play(); // Start playing uos_PlayPaused(); // Start playing paused. uos_PlayNoFree(); // Start playing but do not free the player after stop. uos_PlayPausedNoFree(); // Start playing paused but do not free the player after stop. uos_RePlay(); // Resume playing after pause uos_Stop(); // Stop playing and free thread uos_Pause(); // Pause playing uos_FreePlayer(); // Free the player. Works only when PlayNoFree() was used.
DSP
uos_InputAddDSP() // DSP procedure for input uos_OutputAddDSP() // DSP procedure for output uos_InputSetDSP() // Set DSP In uos_OutputSetDSP() // Set DSP out uos_InputSetDSPVolume(...) // Set Volume uos_InputAddFilter(...) // Add filer uos_AddPlugin(...) // Add pluggin
And much more other procedures/functions (see in uos.pas...)
