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    MédiaSPIP ne modifie jamais le document original mis en ligne.
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    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • Des sites réalisés avec MediaSPIP

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    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
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    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
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Sur d’autres sites (6252)

  • Ffmpeg : How to capture audio and metadata simultaneously

    12 janvier 2020, par ChrisDoernen

    I am developing a multi platform app for live audio streaming written in JS. The goal is to get the meters/volumes per channel while capturing audio from the sound card. This has to be done in one command since I get the error device or resource busy when firing multiple commands with the same input.

    Capturing audio works fine using this command :

    ffmpeg -y -f alsa -i hw:CARD=PCH,DEV=0 -ac 2 -b:a 192k -acodec libmp3lame -f mp3 -probesize 64 -rtbufsize 64 -reservoir 0 -fflags +nobuffer -hide_banner pipe:1

    Getting the volume for the right channel works with this command (left channel is analog providing 0.0.1 to -map_channel) :

    ffmpeg -f alsa -i hw:CARD=PCH,DEV=0 -map_channel 0.0.0 -af ebur128=metadata=1,ametadata=print:key=lavfi.r128.M -f null pipe:1

    The question is how to combine these, providing a way to pipe the outputs correctly.

    As a first step, my current approach is to utilize the file argument of ametadata filter (documenation here) and writing to a socket opened with the following JS code

    var net = require('net');
    

    
var server = net.createServer(function (stream) {
    
  stream.on('data', function (c) { console.log('data:', c.toString()); });
    
});
    

    
server.listen('/tmp/test.sock');

    like

    ffmpeg -f alsa -i hw:CARD=PCH,DEV=0 -map_channel 0.0.1 -af ebur128=metadata=1,ametadata=mode=print:key=lavfi.r128.M:file=unix\:/tmp/test.sock:direct -f null -

    but the socket receives no data and there is no error in ffmpeg.

    Redirecting the output of the streaming command to the socket howerver works :

    ffmpeg -y -f alsa -i hw:CARD=PCH,DEV=0 -ac 2 -b:a 192k -acodec libmp3lame -f mp3 -probesize 64 -rtbufsize 64 -reservoir 0 -fflags +nobuffer -hide_banner unix:/tmp/test.sock

    I am wondering what I am missing and whether I am on the right track alltogether.

  • python Instagram API doesnt work

    9 avril 2017, par sdgm

    I was looking for a c++-Instagram API but there was not any complete project. Now,I am using python-Instagram API. whenever I execute my code, too many errors occur. this is my code :

    from InstagramAPI import InstagramAPI
    

    
InstagramAPI = InstagramAPI("no_ideaw", "xs*************#")
    
InstagramAPI.login()
    
InstagramAPI.removeProfilePicture()

    Then, these are the errors :

        Traceback (most recent call last):
    
  File "tester.py", line 1, in <module>
    
    from InstagramAPI import InstagramAPI
    
  File "/home/muhammad/Downloads/Instagram-API-python-master/InstagramAPI.py", line 25, in <module>
    
    from moviepy.editor import VideoFileClip
    
  File "/home/muhammad/.local/lib/python2.7/site-packages/moviepy/editor.py", line 22, in <module>
    
    from .video.io.VideoFileClip import VideoFileClip
    
  File "/home/muhammad/.local/lib/python2.7/site-packages/moviepy/video/io/VideoFileClip.py", line 3, in <module>
    
    from moviepy.video.VideoClip import VideoClip
    
  File "/home/muhammad/.local/lib/python2.7/site-packages/moviepy/video/VideoClip.py", line 20, in <module>
    
    from .io.ffmpeg_writer import ffmpeg_write_image, ffmpeg_write_video
    
  File "/home/muhammad/.local/lib/python2.7/site-packages/moviepy/video/io/ffmpeg_writer.py", line 15, in <module>
    
    from moviepy.config import get_setting
    
  File "/home/muhammad/.local/lib/python2.7/site-packages/moviepy/config.py", line 38, in <module>
    
    FFMPEG_BINARY = get_exe()
    
  File "/home/muhammad/.local/lib/python2.7/site-packages/imageio/plugins/ffmpeg.py", line 86, in get_exe
    
    raise NeedDownloadError('Need ffmpeg exe. '
    
imageio.core.fetching.NeedDownloadError: Need ffmpeg exe. You can download it by calling:
    
  imageio.plugins.ffmpeg.download()
    
</module></module></module></module></module></module></module>

    I tried to install

    imageio.plugins.ffmpeg.download()

    but nothing happened. what is wrong with my python code ?

  • Error in compiling FFmpeg with lame

    20 mars 2016, par user5761723

    I am trying to compile ffmpeg with lame for mp3 conversion. i am using Xcode 7.2 and ffmpeg-3.0, lame-3.99.5.

    I compiled lame library using following script...

    Build_lame.sh Script file :-
    

    
#!/bin/sh
    

    
CONFIGURE_FLAGS="--disable-shared --disable-frontend"
    

    
ARCHS="arm64 armv7s x86_64 i386 armv7"
    

    
# directories
    
SOURCE="lame"
    
FAT="fat-lame"
    

    
SCRATCH="scratch-lame"
    
# must be an absolute path
    
THIN=`pwd`/"thin-lame"
    

    
COMPILE="y"
    
LIPO="y"
    

    
if [ "$*" ]
    
then
    
    if [ "$*" = "lipo" ]
    
    then
    
        # skip compile
    
        COMPILE=
    
    else
    
        ARCHS="$*"
    
        if [ $# -eq 1 ]
    
        then
    
            # skip lipo
    
            LIPO=
    
        fi
    
    fi
    
fi
    

    
if [ "$COMPILE" ]
    
then
    
    CWD=`pwd`
    
    for ARCH in $ARCHS
    
    do
    
        echo "building $ARCH..."
    
        mkdir -p "$SCRATCH/$ARCH"
    
        cd "$SCRATCH/$ARCH"
    

    
        if [ "$ARCH" = "i386" -o "$ARCH" = "x86_64" ]
    
        then
    
            PLATFORM="iPhoneSimulator"
    
            if [ "$ARCH" = "x86_64" ]
    
            then
    
                SIMULATOR="-mios-simulator-version-min=7.0"
    
                        HOST=x86_64-apple-darwin
    
            else
    
                SIMULATOR="-mios-simulator-version-min=5.0"
    
                        HOST=i386-apple-darwin
    
            fi
    
        else
    
            PLATFORM="iPhoneOS"
    
            SIMULATOR=
    
                    HOST=arm-apple-darwin
    
        fi
    

    
        XCRUN_SDK=`echo $PLATFORM | tr '[:upper:]' '[:lower:]'`
    
        CC="xcrun -sdk $XCRUN_SDK clang -arch $ARCH"
    
        #AS="$CWD/$SOURCE/extras/gas-preprocessor.pl $CC"
    
        CFLAGS="-arch $ARCH $SIMULATOR"
    
        if ! xcodebuild -version | grep "Xcode [1-6]\."
    
        then
    
            CFLAGS="$CFLAGS -fembed-bitcode"
    
        fi
    
        CXXFLAGS="$CFLAGS"
    
        LDFLAGS="$CFLAGS"
    

    
        CC=$CC $CWD/$SOURCE/configure \
    
            $CONFIGURE_FLAGS \
    
                    --host=$HOST \
    
            --prefix="$THIN/$ARCH" \
    
                    CC="$CC" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS"
    

    
        make -j3 install
    
        cd $CWD
    
    done
    
fi
    

    
if [ "$LIPO" ]
    
then
    
    echo "building fat binaries..."
    
    mkdir -p $FAT/lib
    
    set - $ARCHS
    
    CWD=`pwd`
    
    cd $THIN/$1/lib
    
    for LIB in *.a
    
    do
    
        cd $CWD
    
        lipo -create `find $THIN -name $LIB` -output $FAT/lib/$LIB
    
    done
    

    
    cd $CWD
    
    cp -rf $THIN/$1/include $FAT
    
fi
    

    
and i'm compiling FFmpeg libraries with lame by using the following script..
    

    

    

    
build_ffmpeg.sh
    

    
#!/bin/bash
    

    
###########################################################################
    
#  Choose your ffmpeg version and your currently-installed iOS SDK version:
    
#
    
VERSION="3.0"
    
SDKVERSION="9.2"
    

    

    

    

    
#
    
#
    
###########################################################################
    
#
    
# Don't change anything under this line!
    
#
    
###########################################################################
    

    
# No need to change this since xcode build will only compile in the
    
# necessary bits from the libraries we create
    
ARCHS="arm64 armv7 armv7s i386"
    

    
DEVELOPER=`xcode-select -print-path`
    

    
cd "`dirname \"$0\"`"
    
REPOROOT=$(pwd)
    

    
# Where we'll end up storing things in the end
    
OUTPUTDIR="${REPOROOT}/dependencies"
    
mkdir -p ${OUTPUTDIR}/include
    
mkdir -p ${OUTPUTDIR}/lib
    
mkdir -p ${OUTPUTDIR}/bin
    

    

    
BUILDDIR="${REPOROOT}/build"
    
mkdir -p $BUILDDIR
    

    
# where we will keep our sources and build from.
    
SRCDIR="${BUILDDIR}/src"
    
mkdir -p $SRCDIR
    
# where we will store intermediary builds
    
INTERDIR="${BUILDDIR}/built"
    
mkdir -p $INTERDIR
    

    
########################################
    

    
cd $SRCDIR
    

    
# Exit the script if an error happens
    
set -e
    

    
if [ ! -e "${SRCDIR}/ffmpeg-${VERSION}.tar.bz2" ]; then
    
    echo "Downloading ffmpeg-${VERSION}.tar.bz2"
    
    curl -LO http://ffmpeg.org/releases/ffmpeg-${VERSION}.tar.bz2
    
else
    
    echo "Using ffmpeg-${VERSION}.tar.bz2"
    
fi
    

    
tar zxf ffmpeg-${VERSION}.tar.bz2 -C $SRCDIR
    
cd "${SRCDIR}/ffmpeg-${VERSION}"
    

    
set +e # don't bail out of bash script if ccache doesn't exist
    
CCACHE=`which ccache`
    
if [ $? == "0" ]; then
    
    echo "Building with ccache: $CCACHE"
    
    CCACHE="${CCACHE} "
    
else
    
    echo "Building without ccache"
    
    CCACHE=""
    
fi
    
set -e # back to regular "bail out on error" mode
    

    
for ARCH in ${ARCHS}
    
do
    
    if [ "${ARCH}" == "i386" ];
    
    then
    
        PLATFORM="iPhoneSimulator"
    
        EXTRA_CONFIG="--arch=i386 --disable-asm --enable-cross-compile --target-os=darwin --cpu=i386"
    
        EXTRA_CFLAGS="-arch i386 -I/Users/akash/Desktop/lame-ios-build-master/fat-lame/include"
    
        EXTRA_LDFLAGS="-I${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERSION}.sdk/usr/lib -L/Users/akash/Desktop/lame-ios-build-master/fat-lame/lib -mfpu=neon"
    
     elif [ "${ARCH}" == "arm64" ];
    
     then
    

    
         PLATFORM="iPhoneOS"
    

    
         EXTRA_CONFIG="--arch=arm64 --target-os=darwin --enable-cross-compile --disable-armv5te"
    

    
        EXTRA_CFLAGS="-w -arch ${ARCH} -I/Users/akash/Desktop/lame-ios-build-master/fat-lame/include -mfpu=neon"
    

    
        EXTRA_LDFLAGS="-L/Users/akash/Desktop/lame-ios-build-master/fat-lame/lib -mfpu=neon"
    

    
    else
    
        PLATFORM="iPhoneOS"
    
        EXTRA_CONFIG="--arch=arm --target-os=darwin --enable-cross-compile --cpu=cortex-a9 --disable-armv5te"
    
        EXTRA_CFLAGS="-w -arch ${ARCH} --I/Users/akash/Desktop/lame-ios-build-master/fat-lame/include -mfpu=neon"
    

    
        EXTRA_LDFLAGS="-L/Users/akash/Desktop/lame-ios-build-master/fat-lame/lib -mfpu=neon"
    
fi
    

    
    mkdir -p "${INTERDIR}/${ARCH}"
    

    
    ./configure --prefix="${INTERDIR}/${ARCH}" --disable-armv6 --disable-armv6t2 --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-iconv --disable-bzlib --enable-avresample        --enable-gpl  --enable-libmp3lame --enable-nonfree --disable-pthreads --sysroot="${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERSION}.sdk" --cc="${DEVELOPER}/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc"  --extra-cflags="${EXTRA_CFLAGS} -miphoneos-version-min=7.0 -I${OUTPUTDIR}/include " --extra-ldflags="-arch ${ARCH} ${EXTRA_LDFLAGS} -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERSION}.sdk -miphoneos-version-min=7.0 -L${OUTPUTDIR}/lib" ${EXTRA_CONFIG} --enable-pic --extra-cxxflags="$CPPFLAGS -I${OUTPUTDIR}/include -isysroot ${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERSION}.sdk"
    

    
    make &amp;&amp; make install &amp;&amp; make clean
    

    
done
    

    
mkdir -p "${INTERDIR}/universal/lib"
    

    
cd "${INTERDIR}/armv7/lib"
    
for file in *.a
    
do
    

    
cd ${INTERDIR}
    
xcrun -sdk iphoneos lipo -output universal/lib/$file  -create -arch arm64 arm64/lib/$file -arch armv7 armv7/lib/$file -arch armv7s armv7s/lib/$file -arch i386 i386/lib/$file
    
echo "Universal $file created."
    

    
done
    
cp -r ${INTERDIR}/armv7/include ${INTERDIR}/universal/
    

    
echo "Done."
    

    

    

    
=======================
    

    
During compilation i'm getting following Errors :-
    

    
CC  libavcodec/lclenc.o
    
CC  libavcodec/libmp3lame.o
    
In file included from libavcodec/libmp3lame.c:27:
    
In file included from /Users/akash/Desktop/lame-ios-build-master/fat-lame/include/lame/lame.h:23:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/CoreAudioKit.framework/Headers/CoreAudioKit.h:1:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/CoreAudioKit.framework/Headers/CAInterAppAudioSwitcherView.h:13:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:11:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAccelerometer.h:8:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:8:
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:436:1: error: 
    
      expected identifier or '('
    
@class NSString, Protocol;
    
^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:438:19: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT NSString *NSStringFromSelector(SEL aSelector);
    
                  ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:439:44: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT SEL NSSelectorFromString(NSString *aSelectorName);
    
                                           ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:441:19: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT NSString *NSStringFromClass(Class aClass);
    
                  ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:442:54: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT Class __nullable NSClassFromString(NSString *aClassName);
    
                                                     ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:444:19: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT NSString *NSStringFromProtocol(Protocol *proto) NS_AVA...
    
                  ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:444:50: error: 
    
      unknown type name 'Protocol'
    
FOUNDATION_EXPORT NSString *NSStringFromProtocol(Protocol *proto) NS_AVA...
    
                                                 ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:445:19: error: 
    
      unknown type name 'Protocol'
    
FOUNDATION_EXPORT Protocol * __nullable NSProtocolFromString(NSString *n...
    
                  ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:445:62: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT Protocol * __nullable NSProtocolFromString(NSString *n...
    
                                                             ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:449:30: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT void NSLog(NSString *format, ...) NS_FORMAT_FUNCTION(1,2);
    
                             ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:449:53: error: 
    
      format argument not an NSString
    
FOUNDATION_EXPORT void NSLog(NSString *format, ...) NS_FORMAT_FUNCTION(1,2);
    
                             ~~~~~~~~~~~~~~~~       ^                  ~
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:98:49: note: 
    
      expanded from macro 'NS_FORMAT_FUNCTION'
    
        #define NS_FORMAT_FUNCTION(F,A) __attribute__((format(__NSString...
    
                                                       ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:450:31: error: 
    
      unknown type name 'NSString'
    
FOUNDATION_EXPORT void NSLogv(NSString *format, va_list args) NS_FORMAT_...
    
                              ^
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:450:63: error: 
    
      format argument not an NSString
    
  ...void NSLogv(NSString *format, va_list args) NS_FORMAT_FUNCTION(1,0);
    
                 ~~~~~~~~~~~~~~~~                ^                  ~
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:98:49: note: 
    
      expanded from macro 'NS_FORMAT_FUNCTION'
    
        #define NS_FORMAT_FUNCTION(F,A) __attribute__((format(__NSString...
    
                                                       ^
    
In file included from libavcodec/libmp3lame.c:27:
    
In file included from /Users/akash/Desktop/lame-ios-build-master/fat-lame/include/lame/lame.h:23:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/CoreAudioKit.framework/Headers/CoreAudioKit.h:1:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/CoreAudioKit.framework/Headers/CAInterAppAudioSwitcherView.h:13:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:11:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAccelerometer.h:8:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:10:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSArray.h:5:
    
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:8:
    
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSZone.h:8:1: error:

    Can someone tell me what wrong with my approach ?
    can someone help me to solve this problem ?

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