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• Build FFmpeg with Freetype2 for ARM ( Android ) - SOLVED

  15 juillet 2014, par Pawel Cala

  I’m trying to build FFmpeg binary file with freetype library included ( I need it for drawtext filter ). Unfortunately I cannot configure ffmpeg properly and every try ends with "freetype not found" error.

  PS I’ve tried to build guardian-ffmpeg project but i’m getting errors during configure process.

  PS2 Building plain ffmpeg works perfectly well

  Configuration script :

  make distclean &./configure --target-os=linux \
  
  --cross-prefix=arm-linux-androideabi- \
  
  --arch=arm \
  
  --cpu=armv7-a \
  
  --enable-libfreetype --enable-filter=drawtext \ #!Freetype params
  
  --disable-network \
  
  --disable-ffplay \
  
  --disable-ffprobe \
  
  --disable-ffserver \
  
  --enable-protocol=file \
  
  --sysroot=${ANDROID_NDK_ROOT_PATH}/platforms/${ANDROID_API_VERSION}/arch-arm \
  
  --prefix=build/armeabi-v7a \
  
  --disable-asm \
  
  --extra-cflags='-DANDROID -Ifreetype2/ -I${ANDROID_NDK_ROOT_PATH}/sources/cxx-stl/system/include -march=armv7-a -mfloat-abi=softfp' \
  
  --extra-ldflags='-Wl,--fix-cortex-a8 -Lfreetype2/ -L../android-libs -Wl,-rpath-link,../android-libs' \
  
  --extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
  
  make -j6 && make install || exit 0

  Directories sctructure :

  ffmpeg/
  
     -ffmpeg dirs/
  
     -freetype2/
  
     -rest of ffmpeg files ( including configure, make, etc )

  I’ve checked patch sources in guardian-project and I’ve found that ffmpeg configure file might need some changes in require_libfreetype method ?!

  Thanks in advance ( and sorry for my bad english )

  EDIT :
  Building on OSX Mavericks,
  Last 3 lines of config.log ; OSX hasn’t got pkg-config therefore false in 2nd line :

  require_libfreetype
  
  false --exists --print-errors freetype
  
  ERROR: freetype not found

  EDIT :
  SOLUTION !!!

  I’ve manadged to solve my issue. I’ve used Xubuntu 14.04 64bit + Freetype 2.5.3 + newest FFmpeg repo + install linux package "pkg_config" and small modifications in ffmpeg configure script ( find pkg_config and check initialization variable )

  config file for freetype :

  NDK_BASE=/home/dpc/Documents/android-ndk-r9d/
  
  NDK_PROCESSOR=x86_64
  
  NDK_PLATFORM_LEVEL=9
  
  NDK_ABI=arm
  
  NDK_COMPILER_VERSION=4.6
  
  
  
  # Android NDK setup
  
  NDK_PLATFORM_LEVEL=9
  
  NDK_ABI=arm
  
  NDK_COMPILER_VERSION=4.6
  
  NDK_SYSROOT=$NDK_BASE/platforms/android-$NDK_PLATFORM_LEVEL/arch-$NDK_ABI
  
  NDK_UNAME=`uname -s | tr '[A-Z]' '[a-z]'`
  
  if [ $NDK_ABI = "x86" ]; then
  
      HOST=i686-linux-android
  
      NDK_TOOLCHAIN=$NDK_ABI-$NDK_COMPILER_VERSION
  
  else
  
      HOST=$NDK_ABI-linux-androideabi
  
      NDK_TOOLCHAIN=$HOST-$NDK_COMPILER_VERSION
  
  fi
  
  NDK_TOOLCHAIN_BASE=$NDK_BASE/toolchains/$NDK_TOOLCHAIN/prebuilt/$NDK_UNAME-$NDK_PROCESSOR
  
  echo "dpc:" $NDK_TOOLCHAIN_BASE
  
  
  
  CC="$NDK_TOOLCHAIN_BASE/bin/$HOST-gcc --sysroot=$NDK_SYSROOT"
  
  LD=$NDK_TOOLCHAIN_BASE/bin/$HOST-ld
  
  STRIP=$NDK_TOOLCHAIN_BASE/bin/$HOST-strip
  
  PREFIX=$(pwd)/build
  
  
  
  simple_config(){
  
  make clean
  
  ./configure --host=arm-linux-androideabi --without-zlib --without-png --prefix=
  
  make -j4
  
  make install DESTDIR=$(pwd)
  
  }
  
  
  
  complex_config(){
  
  
  
      ./configure \
  
      CC="$CC" \
  
      LD="$LD" \
  
      CFLAGS="-std=gnu99 -mcpu=cortex-a8 -marm -mfloat-abi=softfp -mfpu=neon" \
  
      --host=$HOST \
  
      --with-sysroot="$NDK_SYSROOT" \
  
      --enable-static \
  
      --disable-shared \
  
      --prefix=$PREFIX
  
      --without-bzip2
  
  
  
      make -j4
  
      make install
  
  }
  
  
  
  
  
  make clean
  
  complex_config

  ffmpeg config file :

  #!/bin/sh
  
  
  
  ANDROID_NDK_ROOT_PATH=/home/dpc/Documents/android-ndk-r9d
  
  ANDROID_API_VERSION=android-9
  
  #export PATH=${ANDROID_NDK_ROOT_PATH}:${ANDROID_NDK_ROOT_PATH}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/:$PATH
  
  export PATH=${ANDROID_NDK_ROOT_PATH}:${ANDROID_NDK_ROOT_PATH}/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/:$PATH
  
  echo $PATH
  
  #export PKG_CONFIG_PATH=/home/dpc/Documents/freetype-2.5.3/build/lib/pkgconfig/
  
  #echo $PKG_CONFIG_PATH
  
  
  
  #armv7-a neon
  
  #export ARCH=armeabi-v7a-neon
  
  #./configure --target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --cpu=armv7-a --sysroot=${ANDROID_NDK_ROOT_PATH}/platforms/${ANDROID_API_VERSION}/arch-arm --disable-avdevice --disable-decoder=h264_vdpau  --prefix=build/armeabi-v7a-neon --extra-cflags='-DANDROID -I${ANDROID_NDK_ROOT_PATH}/sources/cxx-stl/system/include -march=armv7-a -mfloat-abi=softfp -mfpu=neon' --extra-ldflags='-Wl,--fix-cortex-a8 -L../android-libs -Wl,-rpath-link,../android-libs' --extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
  
  #make -j6 && make install && make distclean|| exit 0
  
  
  
  #armv7-a
  
  export ARCH=armeabi-v7a
  
  ./configure --target-os=linux \
  
  --cross-prefix=arm-linux-androideabi- \
  
  --arch=arm \
  
  --enable-libfreetype \
  
  --cpu=armv7-a \
  
  --sysroot=${ANDROID_NDK_ROOT_PATH}/platforms/${ANDROID_API_VERSION}/arch-arm \
  
  --disable-avdevice \
  
  --disable-decoder=h264_vdpau  \
  
  --prefix=build/armeabi-v7a \
  
  --extra-cflags='-DANDROID -I${ANDROID_NDK_ROOT_PATH}/sources/cxx-stl/system/include -march=armv7-a -mfloat-abi=softfp' \
  
  --extra-ldflags='-Wl,--fix-cortex-a8 -L../android-libs -Wl,-rpath-link,../android-libs' \
  
  --extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
  
  make -j6 && make install && make distclean|| exit 0

  Hope it helps someone (cc : @SinhHo )

• Android JNI x264 as a library give relocation R_ARM_MOVW_ABS_NC ; recompile with -fPIC

  25 juin 2014, par MoAdiB

  I’m trying to build x264 library to use it in a shared library that I load using jni on android. I’m able to build everything as an executable without any error but when I build as a shared library I get errors with dynamic relocation of R_ARM_MOVW_ABS_NC :

  [armeabi-v7a] SharedLibrary  : libx264.so
  
  /home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/pixel-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
  
  /home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/mc-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
  
  /home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/dct-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
  
  /home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/quant-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
  
  /home/martin/bin/android-ndk/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: /home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/objs/x264/common/arm/predict-a.o: requires unsupported dynamic reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
  
  collect2: error: ld returned 1 exit status
  
  make: *** [/home/martin/Documents/Sources/ScreenSharingServer/app/src/main/obj/local/armeabi-v7a/libx264.so] Error 1

  Here is my android.mk :

  LOCAL_PATH := $(my-dir)
  
  
  
  include $(CLEAR_VARS)
  
  
  
  APP_ABI := armeabi armeabi-v7a
  
  TARGET_ARCH_ABI := armeabi-v7a
  
  LOCAL_ARM_NEON := true
  
  ARCH_ARM_HAVE_NEON := true
  
  
  
  AM_CFLAGS := -march=armv7-a -mfpu=neon
  
  AM_CCASFLAGS := -march=armv7-a -mfpu=neon
  
  
  
  LOCAL_SRC_FILES:= common/mc.c common/predict.c common/pixel.c common/macroblock.c \
  
         common/frame.c common/dct.c common/cpu.c common/cabac.c \
  
         common/common.c common/osdep.c common/rectangle.c \
  
         common/set.c common/quant.c common/deblock.c common/vlc.c \
  
         common/mvpred.c common/bitstream.c \
  
         encoder/analyse.c encoder/me.c encoder/ratecontrol.c \
  
         encoder/set.c encoder/macroblock.c encoder/cabac.c \
  
         encoder/cavlc.c encoder/encoder.c encoder/lookahead.c \
  
         common/threadpool.c \
  
         common/arm/mc-c.c common/arm/predict-c.c \
  
         x264.c \
  
         common/arm/cpu-a.S common/arm/pixel-a.S common/arm/mc-a.S \
  
         common/arm/dct-a.S common/arm/quant-a.S common/arm/deblock-a.S \
  
         common/arm/predict-a.S
  
  
  
  LOCAL_SHARED_LIBRARIES := libcutils
  
  LOCAL_STATIC_LIBRARIES := swscale
  
  
  
  LOCAL_C_INCLUDES := $(LOCAL_PATH) $(LOCAL_PATH)/..
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH) $(LOCAL_PATH)/..
  
  
  
  LOCAL_CFLAGS := -fPIC -O3 -ffast-math -fstrict-aliasing -DANDROID -std=c99
  
  LOCAL_CPPFLAGS := -fPIC
  
  LOCAL_LDFLAGS := -lm
  
  LOCAL_MODULE := x264
  
  
  
  include $(BUILD_SHARED_LIBRARY)

  When I build with V=1 I see -fPIC option in every compilation line...

  I wonder if anybody can help me understand what I do wrong.

  Thanks for your time !

  Martin

• Analytics for ePortfolios, Mahara hui conference

  20 mars 2014, par Matthieu Aubry — Community, Meta

  I was privileged to present at the Mahara Hui conference in Wellington, New Zealand.

  Here are the slides of my presentation “Analytics for ePortfolios” :

  Summary : by using an analytics tool that integrates well with Mahara, such as Piwik, Mahara users can benefit from a multitude of insightful analytics reports.

  Learn more

  Mahara is a web application to build your electronic portfolio. You can create journals, upload files, embed social media resources from the web and collaborate with other users in groups. Mahara is a popular open source project built by a passionate community, and used in universities, schools and companies all over the world.

  Mahara Hui is the first kiwi conference on Mahara, the open source ePortfolio system, in New Zealand. This 2-day conference was held at Te Papa in Wellington from 19 to 20 March 2014 (schedule)

  Next steps

  I’m excited to join the Mahara team at the Mahara Hui Hackfest organised today at Catalyst IT offices. We will brainstorm how to integrate Piwik beautifully within Mahara, and how to ultimately provide students and employees useful analytics on all the content they create !