pulseaudio | Pure go | Math library
kandi X-RAY | pulseaudio Summary
kandi X-RAY | pulseaudio Summary
Package pulseaudio is a pure-Go (no libpulse) implementation of the PulseAudio native protocol. Package pulseaudio is a pure-Go (no libpulse) implementation of the PulseAudio native protocol. This library is a fork of The original library deliberately tries to hide pulseaudio internals and doesn't expose them. For my usecase I needed the exact opposite, access to pulseaudio internals. I will most likely only maintain this as far as is required for noisetorch to work. Pull Requests are however welcome.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- read from io . Reader
- bwrite writes data to w .
- NewClient returns a new Client .
- cookiePath returns the path to the cookie .
- RuntimePath returns the path to the given fn
- LoadModule loads a module .
- exists reports whether the given path exists .
pulseaudio Key Features
pulseaudio Examples and Code Snippets
Community Discussions
Trending Discussions on pulseaudio
QUESTION
I'm a not-so-knowledgeable person in the Linux world trying to understand an audio problem I have in a project. In short, I'm trying to get an audio output through a Java library called Minim (ddf.minim). I can get an output by listening to an input and enabling "monitoring." Monitoring echoes the input to an output. I cannot however get a working output line independent of this feature.
Some context:This application is running on a BeagleBone Black with Debian Buster. This is an ARM microcontroller. My Java application starts up with the system as a systemd service as the root user. It runs in headless mode but with a virtual frame buffer (xvfb
) because it's a Processing application. I have a USB hub connected to the BeagleBone, which hosts a USB-to-AUX adapter. The AUX side splits into the pink/green input/output cables. I have a mic connected to the pink end and earbuds into the green end.
When Minim's getLineIn()
is used to get an input, no errors are seen. Enabling monitoring doesn't generate errors either. Using getLineOut()
will show errors that look like this:
ANSWER
Answered 2022-Mar-15 at 05:01I figured it out!
Calling mixer.open()
was causing problems. I guess Minim does this itself and expects users to leave it unopened when requesting a line.
However, I did also have other discoveries.
- Java and/or Minim are very sensitive to re-requesting audio resources, at least on Debian. Since requesting a line-in implicitly requested both an input and output for the monitoring feature, a subsequent call to
getLineOut()
would fail. You can, however, callMinim.stop()
to start over and get resources again. - The
AudioPlayer
just seems broken. I can't get it to request a working output, but I found thatFilePlayer
works fine for some reason. You can even ask for an output withgetLineOut()
before making aFilePlayer
. Maybe you have to callsetOutputMixer()
(without also callinggetLineOut()
) before getting anAudioPlayer
in order for it to work.
QUESTION
Has anyone documented the differences between Stack Exchange Markup and Github Markup?
I'm in the midst of a project to convert Stack Exchange Markdown to Github Markdown. It might be a little more complicated because Jekyll on Github Pages uses a Markdown derivative called "Kramdown".
I've already written some of the conversion in my Python program. For example old SE posts with #Header
must be converted to # Header
.
Another example are "> Block quote" lines have two spaces appended to the end of the line.
Now it's starting to get tricky (for me at least) where in an image in SE is specified as:
...ANSWER
Answered 2022-Feb-13 at 14:21Converting thousands of Stack Exchange Q&A in markdown format isn't as easy
as simply copying them over to GitHub Pages. The python program
stack-to-blog.py
was used to convert Stack Exchange posts to
GitHub Pages Posts.
The full stack-to-blog.py
program can be accessed on the
Pippim Website repo 🔗.
The program automatically:
- Creates Jekyll front matter on posts and front matter totals for site.
- Selects Stack Exchange Posts based on meeting minimum criteria such as up-votes or accepted answer status.
- If self-answered question, the answer is included and not the question.
- If self-answered question, the accepted answer alone doesn't qualify. Votes from other are the qualifier.
- Initial testing allows selecting small set of random record numbers to convert.
- Converts Stack Exchange Markdown formats to GitHub Pages Kramdown Markdown format.
- Creates hyperlinks to original Answer in Stack Exchange and Kramdown in GitHub Pages.
- Creates search word to URL indices excluding 50% of words like "a", "the", etc. to save space.
- Selectively inserts Table of Contents based on minimum criteria settings.
- Selectively inserts Section Navigation Buttons for: Top (Top of Page), ToS (Top of Section), ToC (Table of Contents) and Skip (Skip section).
- Selectively inserts "Copy Code Block to System Clipboard" button based on lines of code.
- Creates HTML with "Top Ten Answers" with the most votes.
- Creates powerful nested expandable/collapsible detail/summary HTML for many thousands of tags by post.
- Remaps hyperlinks in Stack Exchange Posts to {{ site.title }} website posts if they were converted.
- Fixes old broken
#header
Stack Exchange Markdown. - Converts
< block quote
Stack Exchange Markdown into what works in Jekyll Kramdown. - Convert Stack Exchange
tags to fenced code block language.
- When no fenced code block language is provided, uses shebang language first (if available).
- Converts older four-space indented code blocks to fenced code blocks.
- Converts Stack Exchange Hyperlinks where the website post title is implied and not explicit.
- Prints list of self-answered questions that were not accepted after the mandatory two day wait period.
- Prints list of Rouge Syntax Highlighting languages not supported in fenced code blocks.
- Prints summary totals when finished.
Full documentation is provided here.
This is what program looks like when running:
QUESTION
Why do these terminated python processes still take up memory?
I killed them with kill
before.
How do I remove them without rebooting the system?
this is the output of top
ANSWER
Answered 2021-Dec-16 at 01:03State T
is not terminated, it is "stopped by job control signal" (man top).
To get the processes into this state, you probably sent SIGSTOP
to them (kill -STOP ...
). Instead, you should have sent a SIGTERM
(the default), and you can still do that now. If that doesn't work then send a SIGKILL
.
QUESTION
I'm trying to record audio from my microphone and immediately play it back through my speakers. I fail to do just that; no audio seems to be detected by SDL.
Here's my code:
...ANSWER
Answered 2021-Nov-29 at 16:37SDL_memcpy
is memcpy
, meaning first argument is destination, and second argument is source. In both ouf your callbacks that order is wrong, your input callback just erases your stream data with what is initially stored in buffer
(zeroes), and output callback don't output anything but instead copies garbage to buffer
.
Similarly your if (out_pos >= in_pos)
branch should erase stream
, not buffer
.
Note that your requested audio format is F32 (not guaranteed as you allow format changes), but your debug printfs interpret it as uint8. That will not affect audio playback, only how relevant output is.
QUESTION
To mute and unmute sound I successfully use the following command in the terminal (as root):
...ANSWER
Answered 2021-Nov-14 at 11:02 Datei: /run/user/1000/pulse/native
Zugriff: (0666/srw-rw-rw-) Uid: ( 1000/ pi) Gid: ( 1000/ pi)
QUESTION
I am having sound issues with my firefox. The problem is that, sound comes off as almost muted and sounds like it is coming out from the back speakers. My firefox is using wayland
I've had a similar problem with VLC. I was able to easily fix VLC by setting the audio output module from pulseaudio audio output
to ALSA audio output
and selecting Default ALSA Output (currently PipeWire Media Server)
as the Device.
like shown here.
Firefox about:support
shows the following for the
audio output
when I was installing arch, I installed the following:
alsa-utils
, pipewire
, pipewire-alsa
, pipewire-pulse
, pipewire-jack
my pavucontrol is configured like this.
If I select Analog Stero Duplex
as the profile, then audio from all sources through firefox works . The only problem is, I can't adjust the volume anymore. The sound is either 0% muted or 100% all the time. With Pro Audio
, I can adjust volume but some sounds will not work in firefox.
I was able to partially fix the sound issues on firefox by installing xdg-desktop-portal-gtk
. No most youtube videos thru firefox works great. Not all of them work. Some videos still have the same sound issues. I don't know why. For example, this video https://www.youtube.com/watch?v=2iarxxm-v9w
Other non-youtube sounds still come off as muted. For example, sounds from this website: https://erogol.github.io/ddc-samples/
If there is a way to configure the alsa/pipewire settings globally, so all applications use it as default, that would be ideal. But getting sound to work on firefox just itself will still be a big win for me either way.
...ANSWER
Answered 2021-Oct-10 at 18:55I have found a workaround solution. I downloaded freetube and the sound on the program works perfectly with all kinds of videoos. With this, I don't have to mess around with ALSA env variables.
QUESTION
I cannot make an array of SinkInputInfo objects. I've posted this to the appropriate repo but got no response.
Minimal reproduction: ...ANSWER
Answered 2021-Sep-03 at 11:02You can not create an instance of SinkInputInfo
. You can also not store instances of it anywhere.
The reason is that it is intended to be only valid inside the callbacks:
https://www.freedesktop.org/software/pulseaudio/doxygen/introspect.html#query_sec
Data members in the information structures are only valid during the duration of the callback. If they are required after the callback is finished, a deep copy of the information structure must be performed.
libpulse does not provide any means to copy or free the SinkInputInfo
pointer type.
You can however use anything inside the struct:
QUESTION
My machine is running Ubuntu 20 LTS. I want to manipulate the input live audio in real-time. I have achieved pitch shifting using sox. The command being -
...ANSWER
Answered 2021-Sep-03 at 07:54Found the solution by using trim
in sox. The project can be found in
https://github.com/TathagataRoy1278/Bad_Internet_Audio_Modulator
QUESTION
A little bit of background, I want to use my Pi to emulate a bluetooth keyboard for my phone. I have actually managed to get it to work with my phone but I'm having a hard time with automatic connection.
I want the pi to scan nearby devices and initiate connection with already paired devices but for some reason it doesn't work.
If my pi is connected to a screen (my screen has a built in speaker) than for some reason automatic connection only connects to audio profiles and I have to manually connect to the HID profile, if my pi is not connected to a screen it just can't connect at all and I'm getting
org.bluez.Error.Failed: Protocol not available
when I'm trying to view the bluetooth status using sudo systemctl status bluetooth
I get a hint about what protocol is missing.. this is the output:
ANSWER
Answered 2021-Aug-11 at 12:58This does seem a little back to front as you have the peripheral trying to connect to the phone. Have you looked at using ConnectProfile rather than Connect
?
If you want to have the HID device initiating connection (or reconnection) to HID host (RPi reconnects to your phone), then that is a change in the SDP record. More information at the following gist
QUESTION
I am trying to open a .mp4
file in VLC via the PHP exec
command on a RPI 3
SITUATION
I access localhost and select the .mp4
file I want to play on a mobile device.
RESULT I want PHP to open the video file using VLC on the host machine, which is connected via HDMI to a display.
The command in use is
...ANSWER
Answered 2021-Aug-02 at 16:37I ended up having to run a python script that checks a local file every 5 seconds and will open the movie via that. The PHP script will just write the .mp4 name to the file when it needs to.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install pulseaudio
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page