各位好：
我用的imx6solo板开发qt5程序。用的3.14.28内核的yocto工程，里面是qt5.3.2的qt5。根据文档加自己摸索能运行qt5的程序了。但是不能播放视频。用qt5自带的multimediawidgets里面的例子不能跑，提示defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"。我按community.nxp.com上的帖子在local.conf 添加了PACKAGECONFIG_append_pn-qtmultimedia = " gstreamer"也是不行。报同样的错。希望有搞过imx6 qt5播放视频的朋友给些指导，谢谢。
1. check whether the gtreamer is built
2.if gtreamer can built, what is the name? in this case, PACKAGECONFIG_append_pn-qtmultimedia = " gstreamer010 "
谢谢回复，我把gstreamer改成gstreamer010后编译看到有加进gstreamer,但是编译报错，如下：imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c: In function 'gst_video_connector_new_buffer_probe':
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c:467:32: error: 'GST_PAD_PROBE_DROP' undeclared (first use in this function)
return element->relinked ? GST_PAD_PROBE_DROP : GST_PAD_PROBE_OK;
^
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c:467:32: note: each undeclared identifier is reported only once for each function it appears in
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c:467:53: error: 'GST_PAD_PROBE_OK' undeclared (first use in this function)
return element->relinked ? GST_PAD_PROBE_DROP : GST_PAD_PROBE_OK;
^
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c: In function 'gst_video_connector_handle_sink_event':
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c:623:11: error: 'parent' undeclared (first use in this function)
(void)parent;
^
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c: In function 'gst_video_connector_new_buffer_probe':
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/gstvideoconnector.c:468:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
Makefile:792: recipe for target '.obj/gstvideoconnector.o' failed
make[2]: *** [.obj/gstvideoconnector.o] Error 1
make[2]: *** Waiting for unfinished jobs....
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/qgstreamervideowindow.cpp:48:36: fatal error: gst/video/videooverlay.h: No such file or directory
#include <gst/video/videooverlay.h>
^
compilation terminated.
Makefile:852: recipe for target '.obj/qgstreamervideowindow.o' failed
make[2]: *** [.obj/qgstreamervideowindow.o] Error 1
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/qgstreameraudioprobecontrol.cpp: In member function 'void QGstreamerAudioProbeControl::bufferProbed(GstBuffer*)':
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/qgstreameraudioprobecontrol.cpp:64:10: error: 'caps' was not declared in this scope
if (!caps)
^
/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/qtmultimedia-opensource-src-5.3.2/src/gsttools/qgstreameraudioprobecontrol.cpp:67:57: error: 'caps' was not declared in this scope
QAudioFormat format = QGstUtils::audioFormatForCaps(caps);
^
Makefile:833: recipe for target '.obj/qgstreameraudioprobecontrol.o' failed
make[2]: *** [.obj/qgstreameraudioprobecontrol.o] Error 1
make[2]: Leaving directory '/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/build/src/gsttools'
Makefile:145: recipe for target 'sub-gsttools-make_first' failed
make[1]: *** [sub-gsttools-make_first] Error 2
make[1]: Leaving directory '/imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/build/src'
Makefile:40: recipe for target 'sub-src-make_first' failed
make: *** [sub-src-make_first] Error 2
ERROR: oe_runmake failed
WARNING: exit code 1 from a shell command.
ERROR: Function failed: do_compile (log file is located at /imx6dizzy/build-fb/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/qtmultimedia/5.3.2-r0/temp/log.do_compile.24651)
It looks like some definition file is missing in your environment, but
1. what is your config in local.conf and component?
2. check whether GST_PAD_PROBE_DROP is missing in whole yocto (grep it), if so , you may need to git QT again
/3 
发表于 2016-9-6 21:34:30
沉默卡
照妖镜
发表于 2016-9-7 15:11:45
楼主
