PortAudio is a portable audio I/O library designed for cross-platform support of audio. It uses either a callback mechanism to request audio processing, or blocking read/write calls to buffer data between the native audio subsystem and the client. Audio can be processed in various formats, including 32 bit floating point, and will be converted to the native format internally.
- Documentation is available in "/doc/html/index.html"
- Also see "src/common/portaudio.h" for API spec.
- Also see http://www.portaudio.com/docs/
- And see the "test/" directory for many examples of usage. (we suggest "test/patest_saw.c" for an example)
For information on compiling programs with PortAudio, please see the tutorial at:
http://portaudio.com/trac/wiki/TutorialDir/TutorialStart
We have an active mailing list for user and developer discussions. Please feel free to join. See http://www.portaudio.com for details.
include/portaudio.h = header file for PortAudio API. Specifies API.
src/common/ = platform independant code, host independant
code for all implementations.
src/os = os specific (but host api neutral) code
src/hostapi = implementations for different host apis
src/hostapi/alsa = Advanced Linux Sound Architecture (ALSA)
src/hostapi/asihpi = AudioScience HPI
src/hostapi/asio = ASIO for Windows and Macintosh
src/hostapi/coreaudio = Macintosh Core Audio for OS X
src/hostapi/dsound = Windows Direct Sound
src/hostapi/jack = JACK Audio Connection Kit
src/hostapi/oss = Unix Open Sound System (OSS)
src/hostapi/wasapi = Windows Vista WASAPI
src/hostapi/wdmks = Windows WDM Kernel Streaming
src/hostapi/wmme = Windows MultiMedia Extensions (MME)
test/pa_fuzz.c = guitar fuzz box
test/pa_devs.c = print a list of available devices
test/pa_minlat.c = determine minimum latency for your machine
test/paqa_devs.c = self test that opens all devices
test/paqa_errs.c = test error detection and reporting
test/patest_clip.c = hear a sine wave clipped and unclipped
test/patest_dither.c = hear effects of dithering (extremely subtle)
test/patest_pink.c = fun with pink noise
test/patest_record.c = record and playback some audio
test/patest_maxsines.c = how many sine waves can we play? Tests Pa_GetCPULoad().
test/patest_sine.c = output a sine wave in a simple PA app
test/patest_sync.c = test syncronization of audio and video
test/patest_wire.c = pass input to output, wire simulator