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chromium/external/github.com/PortAudio/portaudio/eec7bb739771381ab698a6a611d933bdd72cbd8f
commit
eec7bb739771381ab698a6a611d933bdd72cbd8f
[log]
author
Be <be@mixxx.org>
Fri Mar 19 17:51:31 2021
committer
GitHub <noreply@github.com>
Fri Mar 19 17:51:31 2021
tree
faad594be94b01614629d098ffa7bc498a626baf
parent
3f7bee79a65327d2e0965e8a74299723ed6f072d [diff]
JACK PipeWire fixes (escape regex chars) (#504)

This patch fixes a problem caused by special regex characters
appearing in the device names when using the Jack interface to PipeWire.

It is uncommon for JACK ports to have any characters that need to
be escaped in a regex. jackd simply calls the audio interface
"system". However PipeWire uses the device name from ALSA for the
JACK port names. If this contains any special regex characters,
BuildDeviceList would find the device but determine it has 0
input channels and 0 output channels. In my case, I have an RME
Babyface Pro which puts its serial number in parentheses:

$ aplay -l
card 0: Pro70785713 [Babyface Pro (70785713)], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
1 file changed
tree: faad594be94b01614629d098ffa7bc498a626baf
  1. .github/
  2. bindings/
  3. build/
  4. cmake_support/
  5. doc/
  6. examples/
  7. include/
  8. pablio/
  9. qa/
  10. src/
  11. test/
  12. .editorconfig
  13. .gitattributes
  14. .gitignore
  15. aclocal.m4
  16. clear_gitrevision.sh
  17. CMakeLists.txt
  18. config.guess
  19. config.sub
  20. configure
  21. configure.in
  22. depcomp
  23. Doxyfile
  24. Doxyfile.developer
  25. i686-w64-mingw32.cmake
  26. install-sh
  27. LICENSE.txt
  28. ltmain.sh
  29. Makefile.in
  30. missing
  31. portaudio-2.0.pc.in
  32. README.configure.txt
  33. README.md
  34. SConstruct
  35. update_gitrevision.sh
README.md

PortAudio - portable audio I/O library

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 at http://www.portaudio.com/docs/
  • Or at /doc/html/index.html after running Doxygen.
  • Also see src/common/portaudio.h for the API spec.
  • And see the examples/ and test/ directories for many examples of usage. (We suggest examples/paex_saw.c for an example.)

For information on compiling programs with PortAudio, please see the tutorial at:

http://portaudio.com/docs/v19-doxydocs/tutorial_start.html

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 independent code, host independent 
                          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 synchronization of audio and video
test/patest_wire.c     = pass input to output, wire simulator