2011-08-07 00:50:05 +00:00
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README for PortAudio
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/*
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* PortAudio Portable Real-Time Audio Library
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* Latest Version at: http://www.portaudio.com
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*
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* Copyright (c) 1999-2008 Phil Burk and Ross Bencina
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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PortAudio is a portable audio I/O library designed for cross-platform
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support of audio. It uses either a callback mechanism to request audio
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processing, or blocking read/write calls to buffer data between the
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native audio subsystem and the client. Audio can be processed in various
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formats, including 32 bit floating point, and will be converted to the
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native format internally.
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Documentation:
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Documentation is available in "/doc/html/index.html"
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Also see "src/common/portaudio.h" for API spec.
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Also see http://www.portaudio.com/docs/
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And see the "test/" directory for many examples of usage
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(we suggest "test/patest_saw.c" for an example)
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For information on compiling programs with PortAudio, please see the
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tutorial at:
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http://portaudio.com/trac/wiki/TutorialDir/TutorialStart
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We have an active mailing list for user and developer discussions.
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Please feel free to join. See http://www.portaudio.com for details.
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Important Files and Folders:
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include/portaudio.h = header file for PortAudio API. Specifies API.
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src/common/ = platform independant code, host independant
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code for all implementations.
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src/os = os specific (but host api neutral) code
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src/hostapi = implementations for different host apis
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Host API Implementations:
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src/hostapi/alsa = Advanced Linux Sound Architecture (ALSA)
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src/hostapi/asihpi = AudioScience HPI
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src/hostapi/asio = ASIO for Windows and Macintosh
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src/hostapi/coreaudio = Macintosh Core Audio for OS X
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src/hostapi/dsound = Windows Direct Sound
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src/hostapi/jack = JACK Audio Connection Kit
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src/hostapi/oss = Unix Open Sound System (OSS)
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src/hostapi/wasapi = Windows Vista WASAPI
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src/hostapi/wdmks = Windows WDM Kernel Streaming
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src/hostapi/wmme = Windows MultiMedia Extensions (MME)
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Test Programs:
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test/pa_fuzz.c = guitar fuzz box
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test/pa_devs.c = print a list of available devices
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test/pa_minlat.c = determine minimum latency for your machine
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test/paqa_devs.c = self test that opens all devices
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test/paqa_errs.c = test error detection and reporting
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test/patest_clip.c = hear a sine wave clipped and unclipped
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test/patest_dither.c = hear effects of dithering (extremely subtle)
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test/patest_pink.c = fun with pink noise
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test/patest_record.c = record and playback some audio
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test/patest_maxsines.c = how many sine waves can we play? Tests Pa_GetCPULoad().
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test/patest_sine.c = output a sine wave in a simple PA app
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test/patest_sync.c = test syncronization of audio and video
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test/patest_wire.c = pass input to output, wire simulator
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