Raspberry pi + QtMultimedia + Alsa
-
Hi and welcome to devnet,
Did you install the ALSA development package for your target ?
[edit: corrected question SGaist]
-
Hi everyone! I got the same issues. I'm a beginner in crosscompiling and just followed the tutorial: https://wiki.qt.io/RaspberryPi2EGLFS ; Now i want to capture Audio Data via USB Audio Adapter (ALSA) but cannot use the QtMultimedia library. Would appreciate it very much, if anyone can help and post a little tutorial about the steps which are different to the tutorial for enabling QtMultimedia. Thanks a lot!
-
Hi and welcome to devnet,
The same question applies: did you install the ALSA dev packages on your target ?
-
It should apply the same for a 64bit host.
Do you mean you have it working properly now or is it still failing ?
-
So, I finally do this tutorial : https://wiki.qt.io/RaspberryPi2EGLFS
It's perfect on 64bits host machine !
You must to install this libraries on the target (and purhaps on host machine) for alsa support on QtMultimedia before to do the tutorial :
sudo apt-get install libfontconfig1-dev libdbus-1-dev libfreetype6-dev libudev-dev libicu-dev libsqlite3-dev libxslt1-dev libssl-dev libasound2-dev libavcodec-dev libavformat-dev \ libswscale-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev gstreamer-tools gstreamer0.10-plugins-good gstreamer0.10-plugins-bad libraspberrypi-dev libpulse-dev \ libx11-dev libglib2.0-dev libcups2-dev freetds-dev libsqlite0-dev libpq-dev libiodbc2-dev libmysqlclient-dev firebird-dev libpng12-dev libjpeg9-dev libgst-dev libxext-dev libxcb1 \ libxcb1-dev libx11-xcb1 libx11-xcb-dev libxcb-keysyms1 libxcb-keysyms1-dev libxcb-image0 libxcb-image0-dev libxcb-shm0 libxcb-shm0-dev libxcb-icccm4 libxcb-icccm4-dev \ libxcb-sync0 libxcb-sync1-dev libxcb-render-util0 libxcb-render-util0-dev libxcb-xfixes0-dev libxrender-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-glx0-dev libxi-dev libdrm-dev gstreamer0.10-alsaI prefert to download all Qt Libraries with this repo :
git clone git://code.qt.io/qt/qt5.git cd qt5 ./init-repositoryAnd I had a little problem with icu and linaro toolchain. You can solve this with add "-no-icu" to configure the qt library.
And thank a lot, men, for your help !
-
Hey, thanks for your answers! I made some progress. I installed the dependencies and cloned the repository, Arthux posted. Configured it like described in the tutorial, but now I'm stuck at "sudo make install".
Ich get the following error message, saying that stdc-predef could not be found:
In file included from <command-line>:0:0: /home/chrizzy/raspi/sysroot/usr/include/stdc-predef.h:59:1: error: one or more PCH files were found, but they were invalid #endif ^ /home/chrizzy/raspi/sysroot/usr/include/stdc-predef.h:59:1: error: use -Winvalid-pch for more information /home/chrizzy/raspi/sysroot/usr/include/stdc-predef.h:59:1: fatal error: .pch/Qt5Multimedia: Datei oder Verzeichnis nicht gefunden compilation terminated. Makefile:15672: die Regel für Ziel „.obj/qmediacontrol.o“ scheiterte make[3]: *** [.obj/qmediacontrol.o] Fehler 1 make[3]: Verzeichnis „/home/chrizzy/raspi/qt5complete/qtmultimedia/src/multimedia“ wird verlassen Makefile:58: die Regel für Ziel „sub-multimedia-install_subtargets“ scheiterte make[2]: *** [sub-multimedia-install_subtargets] Fehler 2 make[2]: Verzeichnis „/home/chrizzy/raspi/qt5complete/qtmultimedia/src“ wird verlassen Makefile:56: die Regel für Ziel „sub-src-install_subtargets“ scheiterte make[1]: *** [sub-src-install_subtargets] Fehler 2 make[1]: Verzeichnis „/home/chrizzy/raspi/qt5complete/qtmultimedia“ wird verlassen Makefile:633: die Regel für Ziel „module-qtmultimedia-install_subtargets“ scheiterte make: *** [module-qtmultimedia-install_subtargets] Fehler 2Has anyone an idea how to solve this? Thanks a lot in advance!
