mirror of
https://github.com/cookiengineer/audacity
synced 2025-08-02 08:59:28 +02:00
e5719621c2
------------------------------------------------------------------------ r1910 | gineera | 2013-09-07 05:14:52 -0500 (Sat, 07 Sep 2013) | 1 line paqa_devs: limit max number of channels tested (to 4); add a fixed decimal format to the timestamp printout. ------------------------------------------------------------------------ r1909 | rbencina | 2013-08-28 19:36:56 -0500 (Wed, 28 Aug 2013) | 1 line pa_mac_core.c line 664 fixed incorrect memset size (was using sizeof(ptr) not sizeof(struct type) ------------------------------------------------------------------------ r1908 | gineera | 2013-08-27 12:14:51 -0500 (Tue, 27 Aug 2013) | 1 line Alsa: Add function to prevent duplicate parts in the visible pa device name string, that occur when the pcm-device name starts with the card name (since they are both used). Achieved by trimming the pcm-device string beginning. ------------------------------------------------------------------------ r1907 | gineera | 2013-08-22 17:01:17 -0500 (Thu, 22 Aug 2013) | 1 line Alsa: Fix memory leak as nonMmapBuffers were not freed (since change to realloc). Clean out corresponding dead code chunk. ------------------------------------------------------------------------ r1906 | gineera | 2013-08-22 14:43:07 -0500 (Thu, 22 Aug 2013) | 1 line Alsa: Rename some variables in pa_linux_alsa where the meaning is mis-leading or wrong in the Alsa context. Also tweak one debug message and a few typos. ------------------------------------------------------------------------ r1897 | gineera | 2013-08-13 15:37:04 -0500 (Tue, 13 Aug 2013) | 1 line Alsa: Fix handling of poll descriptors in PaAlsaStream_WaitForFrames(). Otherwise if capture signals before playback a duplex stream could poll the wrong descriptor, causing a loop (reported by Alexander Kartashov). ------------------------------------------------------------------------ r1896 | rbencina | 2013-08-06 03:26:55 -0500 (Tue, 06 Aug 2013) | 1 line fixed bug that was causing memory corruption in PA/ALSA when host sample format was lager than user format. e.g. using 16 bit output with a sound card that used 24 bit buffers. the incorrect input zeroer was being used. Thanks to Anders Tornvig for identifying the problem ------------------------------------------------------------------------ r1895 | rbencina | 2013-07-24 10:37:15 -0500 (Wed, 24 Jul 2013) | 1 line fixed doxygen markup for a few line breaks in the tutorial ------------------------------------------------------------------------ r1894 | gineera | 2013-06-08 14:30:41 -0500 (Sat, 08 Jun 2013) | 1 line OSS: revise default latency reporting: previous fixed values could not actually be achieved with OSS power-of-2 sizes. Instead try a configuration and correctly report the default latency based on one less than the number of fragments; also fix the stream component 'bufSz' calculation. ------------------------------------------------------------------------ r1893 | gineera | 2013-06-08 14:12:25 -0500 (Sat, 08 Jun 2013) | 1 line Alsa: revise latency use and calculations, since the latency should be equivalent to one Alsa period less than the Alsa ringbuffer (was based on the whole). Also fixes failure if zero latency was specified. ------------------------------------------------------------------------ r1892 | gineera | 2013-05-30 06:30:28 -0500 (Thu, 30 May 2013) | 1 line qa-latency: fix printout typos; re-enable checks of default high vs low latency - but allow them to be equal; remove rogue tab. ------------------------------------------------------------------------ r1891 | rbencina | 2013-05-05 09:00:02 -0500 (Sun, 05 May 2013) | 1 line added code to print error result from Pa_Initialize() in pa_devs.c example ------------------------------------------------------------------------ r1890 | rbencina | 2013-05-01 20:06:01 -0500 (Wed, 01 May 2013) | 1 line factored out InitPaDeviceInfoFromAsioDriver function. skip device rather than failing entire init process if a single ASIO driver returns an error during init. This was happening with MOTU devices if the device wasn't present. See ticket #221 ------------------------------------------------------------------------ r1889 | rbencina | 2013-04-07 09:15:24 -0500 (Sun, 07 Apr 2013) | 1 line move static variables into x86 section so they don't generate warnings when trying to build on 64 bit ------------------------------------------------------------------------ r1888 | rbencina | 2013-04-07 05:20:18 -0500 (Sun, 07 Apr 2013) | 1 line configure.in fix from Leland '[Portaudio] Small patch to fix Mac build' march 4
README for PortAudio
/*
* PortAudio Portable Real-Time Audio Library
* Latest Version at: http://www.portaudio.com
*
* Copyright (c) 1999-2008 Phil Burk and Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
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:
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.
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