README for PortAudio
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: 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:
We have an active mailing list for user and developer discussions. Please feel free to join. See http://www.portaudio.com for details.
Important Files and Folders: 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
Host API Implementations: 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 Programs: 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