GStreamer上的“列入黑名单"是什么意思? [英] What's the meaning of 'blacklisted' on GStreamer?

问题描述

我正在尝试交叉编译GStreamer.版本是1.2.3.主机PC的操作系统是x86 linux，目标系统的操作系统是MIPSEL linux操作系统.

I'm trying to cross-compile GStreamer. Version is 1.2.3. Host PC's OS is x86 linux and Target system's OS is MIPSEL linux OS.

我成功地为目标设备编译了gstreamer和插件.并且可以执行gst-launch-1.0.因此，我尝试使用基本插件libgstvideotestsrc.但这没有用.所以我跑了```gst-inspect-1.0'来检查插件，然后发现如下结果.

I succeeded to compile gstreamer and plugins for target device. And gst-launch-1.0 could be executed. So I tried to use basic plugin, libgstvideotestsrc. But it didn't work. So I ran ```gst-inspect-1.0' to inspect plugins then I found the result like below.

# gst-inspect-1.0 -b
Blacklisted files:
  libgstinterlace.so
  libgstfbdevsink.so
  libgstgeometrictransform.so
  libgstmultifile.so
  libgstencodebin.so
  libgstfestival.so
  libgstlevel.so
  libgstdvdspu.so
  libgstauparse.so
  libgsty4menc.so
  libgstvideofilter.so
  libgstvideoscale.so
  libgstaccurip.so
  libgstvideoconvert.so
  libgstaudioparsers.so
  libgsttcp.so
  libgstvolume.so
  libgstcoreelements.so
  libgstmpegtsdemux.so
  libgstid3tag.so
  libgstadpcmdec.so
  libgstmfc.so
  libgstrtpmanager.so
  libgstaudiotestsrc.so
  libgstdeinterlace.so
  libgstdebug.so
  libgstplayback.so
  libgstspeed.so
  libgstasfmux.so
  libgsticydemux.so
  libgstmpegpsdemux.so
  libgstalaw.so
  libgstwavparse.so
  libgstpnm.so
  libgstnavigationtest.so
  libgstcamerabin2.so
  libgstsdpelem.so
  libgstisomp4.so
  libgstliveadder.so
  libgstmpegtsmux.so
  libgstautodetect.so
  libgstmultipart.so
  libgstvideofiltersbad.so
  libgstaudioresample.so
  libgstautoconvert.so
  libgstdvbsuboverlay.so
  libgstid3demux.so
  libgstvideobox.so
  libgstgio.so
  libgstdtmf.so
  libgstremovesilence.so
  libgstreplaygain.so
  libgstaudioconvert.so
  libgstcutter.so
  libgstgaudieffects.so
  libgstdvb.so
  libgstaudiovisualizers.so
  libgstudp.so
  libgstimagefreeze.so
  libgstadder.so
  libgstpcapparse.so
  libgstmxf.so
  libgstshapewipe.so
  libgstgdp.so
  libgstwavenc.so
  libgstshm.so
  libgstflv.so
  libgstfreeverb.so
  libgstoss4audio.so
  libgstsubenc.so
  libgstaudiorate.so
  libgstinter.so
  libgsttypefindfunctions.so
  libgstvideorate.so
  libgstrtp.so
  libgstcoloreffects.so
  libgstmpegpsmux.so
  libgstivtc.so
  libgstjpegformat.so
  libgstsmpte.so
  libgstalphacolor.so
  libgstsubparse.so
  libgstaudiofxbad.so
  libgstvideomixer.so
  libgstmulaw.so
  libgstdebugutilsbad.so
  libgsteffectv.so
  libgstfieldanalysis.so
  libgstadpcmenc.so
  libgstrawparse.so
  libgstavi.so
  libgstdataurisrc.so
  libgstapetag.so
  libgstinterleave.so
  libgstmidi.so
  libgstrtsp.so
  libgstapp.so
  libgstalpha.so
  libgstaudiofx.so
  libgstvideocrop.so
  libgstvideotestsrc.so
  libgstspectrum.so
  libgstbayer.so
  libgstaiff.so
  libgstsegmentclip.so
  libgstfrei0r.so

Total count: 106 blacklisted files

我想知道列入黑名单"的含义以及如何解决这个问题.如果您需要一些信息来解决此问题，请告诉我.

I wonder the meaning of 'blacklisted' and how I should approach this problem. Please let me know if you need several information to resolve this issue.

这是我对GStreamer的构建配置.

Here is my build configuration for GStreamer.

#PACKAGES: Name + version
export GST_PLUGIN_BASE="gst-plugins-base-1.2.3"
export GST_PLUGIN_GOOD="gst-plugins-good-1.2.3"
export GST_PLUGIN_BAD="gst-plugins-bad-1.2.3"


#HOST & Build configuration.
export HOST="mips-linux-gnu"
export BUILD="i686-pc-linux-gnu"


#Set path for file system.
export BUILD_PATH="~~~~~"
export ROOTFS_PATH="${BUILD_PATH}/rootfs"
export MIPS_LIB="~~~"
export INSTALL_PATH="${ROOTFS_PATH}/usr"
export INSTALL_PATH_LIB="${ROOTFS_PATH}/usr/lib"

#Compiler options
export PATH="${PATH}:${INSTALL_PATH}/bin"
export CFLAGS="-I${ROOTFS_PATH}/usr/include  -I${ROOTFS_PATH}/usr/include/glib-2.0 -I${ROOTFS_PATH}/usr/lib/glib-2.0/include -I${ROOTFS_PATH}/usr/include/gstreamer-1.0 -I${ROOTFS_PATH}/usr/include/gio-unix-2.0 -mno-compact-eh -EL"   
export CPPFLAGS="-I${ROOTFS_PATH}/usr/include  -I${ROOTFS_PATH}/usr/include/glib-2.0 -I${ROOTFS_PATH}/usr/lib/glib-2.0/include -I${ROOTFS_PATH}/usr/include/gstreamer-1.0 -I${ROOTFS_PATH}/usr/include/gio-unix-2.0 -mno-compact-eh -EL"
export CXXFLAGS=$CPPFLAGS
export GST_CHECK_CFLAGS="-I${ROOTFS_PATH}/usr/include -I${ROOTFS_PATH}/usr/include/glib-2.0/include" 
export PKG_CONFIG="/usr/bin/pkg-config" 
export PKG_CONFIG_PATH="${PATH}:${ROOTFS_PATH}/lib/pkgconfig/:${ROOTFS_PATH}/usr/lib/pkgconfig/:${ROOTFS_PATH}/usr/local/lib/pkgconfig/:/usr/lib/pkgconfig:/usr/local/lib/pkgconfig:/lib/pkgconfig"
export LD_LIBRARY_PATH="/lib:/usr/local/lib"
export CC="~~~mips-linux-gnu-gcc -EL"
export CXX="~~~mips-linux-gnu-g++ -EL"



cd ${BUILD_PATH}


#GStreamer 1.2.3
#http://greenday96.egloos.com/viewer/4627046
wget http://gstreamer.freedesktop.org/src/gstreamer/$GSTREAMER.tar.xz
tar xf $GSTREAMER.tar.xz
cd $GSTREAMER
./configure --prefix=$INSTALL_PATH --build=$BUILD  --host=$HOST  --disable-nls --disable-static 
sudo make 
sudo make install 
cd ..

#gst-plugin-base 1.2.3 
wget http://gstreamer.freedesktop.org/src/gst-plugins-base/$GST_PLUGIN_BASE.tar.xz
tar xf $GST_PLUGIN_BASE.tar.xz
cd $GST_PLUGIN_BASE
./configure --prefix=$INSTALL_PATH --build=$BUILD  --host=$HOST  --disable-nls --disable-static --disable-examples --disable-pango
sudo make 
sudo make install 
cd ..


# gst-plugin-good-1.2.3 
# http://gstreamer.freedesktop.org/src/gst-plugins-good/gst-plugins-good-1.2.3.tar.xz
wget http://gstreamer.freedesktop.org/src/gst-plugins-good/$GST_PLUGIN_GOOD.tar.xz
tar xf $GST_PLUGIN_GOOD.tar.xz
cd $GST_PLUGIN_GOOD
./configure --prefix=$INSTALL_PATH --build=$BUILD  --host=$HOST  --disable-nls --disable-static --disable-valgrind --disable-equalizer --disable-flx --disable-goom --disable-goom2k1 --disable-matroska --disable-monoscope  --disable-oss  --disable-cairo  --disable-gdk_pixbuf   --disable-soup  --disable-libpng --disable-gst_v4l2
sudo make 
sudo make install 
cd ..


# gst-plugin-bad-1.2.3 
# http://gstreamer.freedesktop.org/src/gst-plugins-bad/gst-plugins-bad-1.2.3.tar.xz
wget http://gstreamer.freedesktop.org/src/gst-plugins-bad/$GST_PLUGIN_BAD.tar.xz
tar xf $GST_PLUGIN_BAD.tar.xz
cd $GST_PLUGIN_BAD
./configure --prefix=$INSTALL_PATH --build=$BUILD  --host=$HOST  --disable-nls --disable-static   --disable-y4m --disable-siren --disable-librfb  --disable-yadif --disable-smooth --disable-videoparsers --disable-decklink --disable-valgrind --disable-directfb --disable-examples 
sudo make 
sudo make install 
cd ..

推荐答案

在我的情况下，由于我构建了kvssink而将其列入黑名单，而kvssink依赖于其他库.而且GStreamer找不到它们.

In my case it was blacklisted as I have built kvssink which have dependencies on other libraries. And GStreamer doesn't found them.

就是这样:

gst-inspect-1.0 kvssink

(gst-plugin-scanner:22): GStreamer-WARNING **: 13:07:28.097: Failed to load plugin '/root/bin/producer/libgstkvssink.so': libproducer.so: cannot open shared object file: No such file or directory
(gst-plugin-scanner:22): GStreamer-WARNING **: 13:07:28.204: Failed to load plugin '/root/bin/producer/libproducer.so': libcproducer.so: cannot open shared object file: No such file or directory

为了确认库问题，我使用了ldd

To confirm libraries issue I've used ldd

ldd libgstkvssink.so

将列出所有可能在系统中找到的依赖项及其路径. 找不到我的库libcproducer.so和libcproducer.so.

Which will list all dependencies with paths were they may be found in system. my libraries libcproducer.so and libcproducer.so were not found.

基于为其他可见库编写的路径

Based on path pritned for other visible libraries

    linux-vdso.so.1 (0x00007ffc3c1a6000)
libgstreamer-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0 (0x00007f064d24d000)

我只是将缺少的库复制到/usr/lib/x86_64-linux-gnu/ 在我的情况下是:

I just copied missing libraries to /usr/lib/x86_64-linux-gnu/ In my case it was:

cp libcproducer.so  /usr/lib/x86_64-linux-gnu/
cp libproducer.so /usr/lib/x86_64-linux-gnu/

比:

gst-inspect-1.0 kvssink

打印插件详细信息.

我已解决此问题，这要归功于该线程中的信息: 使用自动工具在gstreamer插件中链接外部库

I've resolved that thanks to information in this thread: Linking against external libraries in gstreamer plugin using autotools

这篇关于GStreamer上的“列入黑名单"是什么意思?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！