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1 README for PortAudio
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2
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3 /*
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4 * PortAudio Portable Real-Time Audio Library
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5 * Latest Version at: http://www.portaudio.com
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6 *
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7 * Copyright (c) 1999-2008 Phil Burk and Ross Bencina
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8 *
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9 * Permission is hereby granted, free of charge, to any person obtaining
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10 * a copy of this software and associated documentation files
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11 * (the "Software"), to deal in the Software without restriction,
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12 * including without limitation the rights to use, copy, modify, merge,
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13 * publish, distribute, sublicense, and/or sell copies of the Software,
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14 * and to permit persons to whom the Software is furnished to do so,
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15 * subject to the following conditions:
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16 *
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17 * The above copyright notice and this permission notice shall be
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18 * included in all copies or substantial portions of the Software.
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19 *
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20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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23 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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25 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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26 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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27 */
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28
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29 /*
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30 * The text above constitutes the entire PortAudio license; however,
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31 * the PortAudio community also makes the following non-binding requests:
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32 *
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33 * Any person wishing to distribute modifications to the Software is
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34 * requested to send the modifications to the original developer so that
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35 * they can be incorporated into the canonical version. It is also
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36 * requested that these non-binding requests be included along with the
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37 * license above.
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38 */
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39
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40
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41 PortAudio is a portable audio I/O library designed for cross-platform
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42 support of audio. It uses either a callback mechanism to request audio
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43 processing, or blocking read/write calls to buffer data between the
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44 native audio subsystem and the client. Audio can be processed in various
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45 formats, including 32 bit floating point, and will be converted to the
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46 native format internally.
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47
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48 Documentation:
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49 Documentation is available in "/doc/html/index.html"
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50 Also see "src/common/portaudio.h" for API spec.
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51 Also see http://www.portaudio.com/docs/
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52 And see the "test/" directory for many examples of usage
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53 (we suggest "test/patest_saw.c" for an example)
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54
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55 For information on compiling programs with PortAudio, please see the
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56 tutorial at:
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57
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58 http://portaudio.com/trac/wiki/TutorialDir/TutorialStart
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59
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60 We have an active mailing list for user and developer discussions.
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61 Please feel free to join. See http://www.portaudio.com for details.
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62
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63
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64 Important Files and Folders:
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65 include/portaudio.h = header file for PortAudio API. Specifies API.
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66 src/common/ = platform independant code, host independant
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67 code for all implementations.
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68 src/os = os specific (but host api neutral) code
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69 src/hostapi = implementations for different host apis
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70
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71
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72 Host API Implementations:
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73 src/hostapi/alsa = Advanced Linux Sound Architecture (ALSA)
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74 src/hostapi/asihpi = AudioScience HPI
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75 src/hostapi/asio = ASIO for Windows and Macintosh
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76 src/hostapi/coreaudio = Macintosh Core Audio for OS X
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77 src/hostapi/dsound = Windows Direct Sound
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78 src/hostapi/jack = JACK Audio Connection Kit
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79 src/hostapi/oss = Unix Open Sound System (OSS)
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80 src/hostapi/wasapi = Windows Vista WASAPI
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81 src/hostapi/wdmks = Windows WDM Kernel Streaming
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82 src/hostapi/wmme = Windows MultiMedia Extensions (MME)
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83
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84
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85 Test Programs:
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86 test/pa_fuzz.c = guitar fuzz box
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87 test/pa_devs.c = print a list of available devices
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88 test/pa_minlat.c = determine minimum latency for your machine
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89 test/paqa_devs.c = self test that opens all devices
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90 test/paqa_errs.c = test error detection and reporting
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91 test/patest_clip.c = hear a sine wave clipped and unclipped
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92 test/patest_dither.c = hear effects of dithering (extremely subtle)
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93 test/patest_pink.c = fun with pink noise
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94 test/patest_record.c = record and playback some audio
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95 test/patest_maxsines.c = how many sine waves can we play? Tests Pa_GetCPULoad().
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96 test/patest_sine.c = output a sine wave in a simple PA app
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97 test/patest_sync.c = test syncronization of audio and video
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98 test/patest_wire.c = pass input to output, wire simulator
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