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https://stackoverflow.com/questions/19985490/is-audio-playback-via-alsa-supported-in-qt5
I'm the Debian maintainer for Qt and today a user came with the same problem. The build logs show that alsa dependencies are there and it's being properly detected... :-/ Note 2014-12-03: the problem lies in plugins.pro: it doesn't builds the alsa plugin if pulseaudio support is found. Problem and patch by Chris Ruvolo, will push upstream later ...
https://forum.qt.io/topic/82589/yocto-with-qt5-5-and-alsa-support-for-playing-audio
Yocto with Qt5.5 and alsa support for playing audio. ... So I want to use alsa for playing audio too. I removed pulseaudio server and Qt support for pulseaudio in my local.conf Yocto file and add alsa support to Qt. Now videos play well but QML audio finds no audio device.
https://alsa-project.org/wiki/Main_Page
Introduction The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system. ALSA has the following significant features: Efficient support for all types of audio interfaces, from consumer sound cards to professional multichannel audio interfaces.
https://www.qt.io/qt-support/
Our Qt support team, working closely with RnD, is on a mission to help you solve technical challenges and use best practices with Qt APIs, functions, methods, and programming techniques for your project. If you need an extra boost, we can quickly become an extension of your team, ensuring your ...
http://amin-ahmadi.com/2015/08/25/qt-build-configure-options/
I usually need to select a variety of options for building Qt depending on what I need and what I don’t need and strangely enough it is not easy to find the list of available options in the documentations so here it is. Below is the list of all configure options for building Qt. It is … Continue reading "Qt …
https://www.alsforums.com/
Jan 24, 2020 · The ALS forum is a support group to help people deal with the daily living issues associated with ALS. The ALS forum will connect you with people that can provide answers, support and help with ALS. We invite you to join our community. Recent news articles.
http://www.alsa.org/community/support-groups/
ALS Association Chapter Support Groups. Support groups are a great resource for people to maintain control over their lives, to give and take the wisdom and experience that comes from living with a devastating illness. Support groups exist entirely for you, the person with ALS…
https://retifrav.github.io/blog/2018/02/17/build-qt-statically/
So, indeed, -ltcg (I actually don't know what role does that one play here) and -optimize-size configuration options do provide smaller application binaries, but at the same time you lose in Qt build time, its size and also applications build time. Cleaning the build directory. Note, that if you were building Qt before, then you should clean out the old build first:
Due to the inability of Alsa to anticipate or control conditions whereby Alsa products will be employed, Alsa does not represent or guarantee that any Alsa product is fit for a particular purpose. Alsa products should be tested by users to determine suitability for a particular purpose.
http://www.tal.org/tutorials/building-qt-58-raspberry-pi-debian-stretch
Raspbian based on Debian Stretch comes with an old (5.7.1) version of Qt that is already outdated and missing some features and modules. Afaik there are no up-to-date backports so the only way to get an up to date version version of Qt with all features enabled running on your Pi is to build it yourself.. This tutorial will use the LTS release branch, version 5.8.0.
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