[GEM-dev] v4l2 for webcam

[Jack]

Le 15 juin 09 à 13:51, IOhannes m zmoelnig a écrit :

> Jack wrote:
>> Hello Iohannes,
>>>
>>> if you want to compile Gem with native libv4l support, make sure  
>>> that you also have the _development_ packages for libv4l  
>>> installed ("libv4l-devel" or the like on rpm-based distros)
>> Both (libv4l-0 version 0.5.8-1 and libv4l-dev version 0.5.8-1)  
>> have been installed with synaptic.
>> I try apt-get install libv4l-dev, but i get a confirmation that i  
>> have the most recent version.
>
> oh, i somehow had the impression that you were using fedora.
> anyhow, you did as i would have told you :-)
No no, Ubuntu 9.04.
>
>
>> I don't know if that can help you to understand but the pidip  
>> object [pdp_v4l2] works fine here.
>
> no, that's unrelated, as pdp does not use libv4l (yet).
>
>>>
>>> if you want to just use the LD_PRELOAD hack, then you won't see  
>>> the "video4linux2" line when starting Gem but it should work  
>>> anyhow...
>
>> No, i don't want :)
>
> good.
>
>> But if it is the only one solution, i will try it.
>> Any Idea ?
>
> i think you might be missing pkg-config ("apt-get install pkg- 
> config"), which is used by Gem's configure to detect relevant flags  
> for installed libraries.
pkg-config was installed.
>
> if this doesn't help either, you would need to post the entire  
> configure output.
OK :

checking for Base/configLinux.h.in... yes
checking for g++... g++
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln -s works... yes
checking whether compiler accepts "-fPIC"... yes
building Gem with Controls-objects
building Gem with Geos-objects
building Gem with Manips-objects
building Gem with Nongeos-objects
building Gem with Particles-objects
building Gem with Pixes-objects
building Gem with openGL-objects
building Gem without Vertex-objects
checking for sin in -lm... yes
checking for main in -lz... yes
checking for dlopen in -ldl... yes
checking how to run the C++ preprocessor... g++ -E
checking for X... libraries , headers
checking for gethostbyname... yes
checking for connect... yes
checking for remove... yes
checking for shmat... yes
checking for IceConnectionNumber in -lICE... yes
checking for main in -lX11... yes
checking for main in -lXext... yes
checking for XF86VidModeGetAllModeLines in -lXxf86vm... no
checking for main in -lXext... (cached) yes
checking for "OpenGL"-framework... no
checking for glInitNames in -lGL... yes
checking for gluLookAt in -lGLU... yes
checking for "AGL"-framework... no
checking for "Carbon"-framework... no
checking for "QuickTime"-framework... no
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for PKG_IMAGEMAGICK___CFLAGS...
checking for PKG_IMAGEMAGICK___LIBS...
checking for ImageMagick++-config... no
checking for main in -lMagick++... no
checking for PKG_TIFF_CFLAGS...
checking for PKG_TIFF_LIBS...
checking for tiff-config... no
checking for TIFFOpen in -ltiff... yes
checking for PKG_JPEG_CFLAGS...
checking for PKG_JPEG_LIBS...
checking for jpeg-config... no
checking for jpeg_read_header in -ljpeg... yes
checking for PKG_LIBQUICKTIME_CFLAGS... -I/usr/include/lqt
checking for PKG_LIBQUICKTIME_LIBS... -lquicktime -lpthread -lm -lz -ldl
checking for PKG_LQT_CFLAGS...
checking for PKG_LQT_LIBS...
checking for lqt-config... yes
checking for PKG_MPEG3_CFLAGS...
checking for PKG_MPEG3_LIBS...
checking for mpeg3-config... no
checking for mpeg3_check_sig in -lmpeg3... yes
checking for PKG_MPEG_CFLAGS...
checking for PKG_MPEG_LIBS...
checking for mpeg-config... no
checking for OpenMPEG in -lmpeg... no
checking for PKG_AVIFILE_CFLAGS...
checking for PKG_AVIFILE_LIBS...
checking for avifile-config... no
checking for CreateIAviReadFile in -laviplay... no
checking for PKG_FFMPEG_CFLAGS...
checking for PKG_FFMPEG_LIBS...
checking for ffmpeg-config... no
checking for av_open_input_file in -lavformat... no
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking linux/videodev.h usability... yes
checking linux/videodev.h presence... yes
checking for linux/videodev.h... yes
checking for PKG_IEEE1394_CFLAGS...
checking for PKG_IEEE1394_LIBS...
checking for ieee1394-config... no
checking for main in -ldv... no
checking whether linker accepts "-lftgl_pic  "... no
checking for PKG_FTGL_CFLAGS... -I/usr/include/FTGL -I/usr/include/ 
freetype2
checking for PKG_FTGL_LIBS... -lftgl
checking for PKG_ARTOOLKIT_CFLAGS...
checking for PKG_ARTOOLKIT_LIBS...
checking for artoolkit-config... no
checking for arInitCparam in -lAR... no
checking for pthread_create in -lpthread... yes
checking for X... libraries , headers
checking for ANSI C header files... (cached) yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking float.h usability... yes
checking float.h presence... yes
checking for float.h... yes
checking for memory.h... (cached) yes
checking stddef.h usability... yes
checking stddef.h presence... yes
checking for stddef.h... yes
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for strings.h... (cached) yes
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking termios.h usability... yes
checking termios.h presence... yes
checking for termios.h... yes
checking for unistd.h... (cached) yes
checking for stdbool.h that conforms to C99... yes
checking for _Bool... no
checking for an ANSI C-conforming const... yes
checking for inline... inline
checking for size_t... yes
checking whether time.h and sys/time.h may both be included... yes
checking size of unsigned int... 4
checking size of void *... 4
checking for error_at_line... yes
checking for pid_t... yes
checking vfork.h usability... no
checking vfork.h presence... no
checking for vfork.h... no
checking for fork... yes
checking for vfork... yes
checking for working fork... yes
checking for working vfork... (cached) yes
checking for stdlib.h... (cached) yes
checking for GNU libc compatible malloc... yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for getpagesize... yes
checking for working mmap... yes
checking for bzero... yes
checking for floor... yes
checking for gettimeofday... yes
checking for memset... yes
checking for munmap... yes
checking for pow... yes
checking for sqrt... yes
checking for strchr... yes
checking for strdup... yes
checking for strrchr... yes
checking for strstr... yes
checking for lqt_open_write... yes
checking m_pd.h usability... yes
checking m_pd.h presence... yes
checking for m_pd.h... yes
checking GL/gl.h usability... yes
checking GL/gl.h presence... yes
checking for GL/gl.h... yes
checking OpenGL/gl.h usability... no
checking OpenGL/gl.h presence... no
checking for OpenGL/gl.h... no
checking GL/glu.h usability... yes
checking GL/glu.h presence... yes
checking for GL/glu.h... yes
checking OpenGL/glu.h usability... no
checking OpenGL/glu.h presence... no
checking for OpenGL/glu.h... no
checking whether compiler accepts "-freg-struct-return"... yes
enabling "register struct return"
    allows to make use of FreeFrame-effects without recompiling them
    might break things, if you are using several different compilers
checking whether compiler accepts "-O3"... yes
checking whether compiler accepts "-falign-loops=32 -falign-functions=32
-falign-jumps=32 -funroll-loops"... yes
checking whether compiler accepts "-ffast-math"... yes
checking whether compiler accepts "-mmmx"... yes
checking whether compiler accepts "-fpascal-strings"... no
checking whether linker accepts "-shared -Wl,-export-dynamic"... yes
checking whether linker accepts "-dynamiclib -mmacosx-version-min=10.3
-undefined dynamic_lookup"... no
checking whether linker accepts "-bundle -undefined suppress
-flat_namespace"... no
checking for strip... strip
checking if strip is GNU strip... yes
checking for dos2unix... no
configure: creating ./config.status
config.status: creating Make.config
config.status: creating Base/configLinux.h
config.status: Base/configLinux.h is unchanged

Result:
   Target                 : Gem.pd_linux
   Objects                : Base Controls Geos Manips Nongeos Particles
Pixes openGL

Configuration:
   Compiler               : g++
   CXXFLAGS               : -g -O2 -fPIC -freg-struct-return -O3
-falign-loops=32 -falign-functions=32 -falign-jumps=32 -funroll-loops
-ffast-math -mmmx
			 : -I/usr/include/lqt -I/usr/include/lqt   -I/usr/include/FTGL
-I/usr/include/freetype2
   INCLUDES               :  -I/usr/include/FTGL -I/usr/include/ 
freetype2
   DEFINES		 :

   LIBS                   : -lmpeg3 -ljpeg -ltiff -lGLU -lGL -lXext - 
lXext
-lX11 -ldl -lz -lm   -lpthread
			 : -lftgl   -L/usr/lib -lquicktime -lpthread -lm -lz -ldl -lquicktime
-lpthread -lm -lz -ldl
   LDFLAGS		 : -shared -Wl,-export-dynamic
			 :

   Strip			 : strip --strip-unneeded

   Install path           : /usr/local

  pure-data:
   version                : 0.41
   extension              : pd_linux

  used optional libraries:

   font-rendering         : FTGL

   image-support
     use ImageMagick      : no
     use TIFF             : yes
     use JPEG             : yes
   video-support
     use mpeg             : no
     use mpeg-3           : yes
     use QuickTime        : yes
     use aviplay          : no
     use ffmpeg           : no
   input-support
     use v4l              : yes
     use ieee1394         : no

Thanx.
++

Jack


>
>
> fgasdmr
> IOhannes