Recherche avancée

Sur d’autres sites (8944)

• Build FFmpeg for All Android architecture correctly

  22 octobre 2017, par fthopkins

  I built ffmpeg libraries for all android architecture. But some details are confusing my mind. First of all let me explain step by step how i built.

  • I downloaded latest version of libx264 from
    https://www.videolan.org/developers/x264.html
  • Created and run build_all.sh script (in x264 folder) for creating libs for (almost) all android platforms. Then i got android folder in x264 folder. e.g android/arm android/arm64 android/x86 android/x86_64 in x264 folder.
  • I download the ffmpeg3.3.4 from https://ffmpeg.org/download.html
  • I created 4 copies of ffmpeg3.3.4 folder. Named them with android architectures names.
    Like ffmpeg3.3.4-arm64 ffmpeg3.3.4-arm ffmpeg3.3.4-x86 ffmpeg3.3.4-x86_64
  • Created build_(architecture-name).sh for each platforms of android. Than move each one of 'named'.sh files to the named ffmpeg folders according to their architecture names.
    E.g build_android_x86.sh => ffmpeg3.3.4-x86

  build_android_arm64.sh example

  #!/bin/bash
  
  #Change NDK to your Android NDK location
  
  NDK=$HOME/Android/Sdk/ndk-bundle
  
  PLATFORM=$NDK/platforms/android-21/arch-arm64/
  
  PREBUILT=$NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64
  
  
  
  GENERAL="\
  
  --enable-small \
  
  --enable-cross-compile \
  
  --extra-libs="-lgcc" \
  
  --arch=aarch64 \
  
  --cc=$PREBUILT/bin/aarch64-linux-android-gcc \
  
  --cross-prefix=$PREBUILT/bin/aarch64-linux-android- \
  
  --nm=$PREBUILT/bin/aarch64-linux-android-nm \
  
  --extra-cflags="-I../x264/android/arm64/include" \
  
  --extra-ldflags="-L../x264/android/arm64/lib" "
  
  
  
  MODULES="\
  
  --enable-gpl \
  
  --enable-libx264"
  
  
  
  
  
  
  
  function build_arm64
  
  {
  
    ./configure \
  
    --logfile=conflog.txt \
  
    --target-os=linux \
  
    --prefix=./android/arm64-v8a \
  
    ${GENERAL} \
  
    --sysroot=$PLATFORM \
  
    --extra-cflags="" \
  
    --extra-ldflags="-lx264 -Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
  
    --enable-shared \
  
    --disable-static \
  
    --disable-doc \
  
    --enable-zlib \
  
    ${MODULES}
  
  
  
    make clean
  
    make
  
    make install
  
  }
  
  
  
  build_arm64
  
  
  
  
  
  echo Android ARM64 builds finished

  • Moved all ffmpeg3.3.4-arm64 ffmpeg3.3.4-arm ffmpeg3.3.4-x86 ffmpeg3.3.4-x86_64 folders to the NDK_PATH (C:\Users\MyName\AppData\Local\Android\sdk\ndk-bundle)
  • Put x264 folder at same level of hierarchy with ffmpeg folders
    in (C:\Users\MyName\AppData\Local\Android\sdk\ndk-bundle)
  • Run each of build_android_x86.sh, build_android_x86_64.sh.. scripts one by one in their own ffmpeg folder. Then i got android folders in ffmpeg folders. (created android folders have library folders)
    e.g ffmpeg3.3.4-x86/android/x86/(bin,inlude,lib,share)

  • Created Android.mk files for all created android folders and moved each one of them to android/armName folder. e.g Android.mk => ffmpeg3.3.4-x86/android/x86/

    LOCAL_PATH:= $(call my-dir)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE:= libavcodec
    
    LOCAL_SRC_FILES:= lib/libavcodec-57.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE:= libavformat
    
    LOCAL_SRC_FILES:= lib/libavformat-57.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE:= libswscale
    
    LOCAL_SRC_FILES:= lib/libswscale-4.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE:= libavutil
    
    LOCAL_SRC_FILES:= lib/libavutil-55.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE:= libavfilter
    
    LOCAL_SRC_FILES:= lib/libavfilter-6.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE:= libswresample
    
    LOCAL_SRC_FILES:= lib/libswresample-2.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE := postproc
    
    LOCAL_SRC_FILES := lib/libpostproc-54.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE := avdevice
    
    LOCAL_SRC_FILES := lib/libavdevice-57.so
    
    LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
    
    include $(PREBUILT_SHARED_LIBRARY)

  • Create "arm named" folders e.g x86 x86_4 arm64 arm7 in jni folder of my project (myproject/app/jni/x86, myproject/app/jni/x86_64).

  • Go to ndk path open named ffmpeg folders one by one and copy ffmpeg.c ffmpeg_filter.c ffmpeg_opt.c cmdutils.c files from ffmpeg folders to the "arm named" folders. e.g ffmpeg.c => myproject/app/jni/x86

  • Created Android.mk file in my project.

    LOCAL_PATH := $(call my-dir)
    
    #$(warning $(LOCAL_PATH))
    
    
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE    := videoEdit
    
    LOCAL_LDLIBS := -llog -ljnigraphics -lz -landroid
    
    LOCAL_CFLAGS := -Wdeprecated-declarations
    
    ANDROID_LIB := -landroid
    
    
    
    $(info $(TARGET_ARCH_ABI))
    
    
    
    ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
    
        LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg-3.3.4-armeabi
    
        LOCAL_SRC_FILES :=  videoEdit.c arm7/ffmpeg.c arm7/ffmpeg_filter.c arm7/ffmpeg_opt.c arm7/cmdutils.c
    
        LOCAL_CFLAGS += -lx264 -Wl,--no-merge-exidx-entries
    
    else
    
    
    
        ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
    
                LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg-3.3.4-arm64-v8a
    
                LOCAL_SRC_FILES :=  videoEdit.c arm64/ffmpeg.c arm64/ffmpeg_filter.c arm64/ffmpeg_opt.c arm64/cmdutils.c
    
                LOCAL_CFLAGS += -funwind-tables -Wl,--no-merge-exidx-entries
    
        else
    
    
    
            ifeq ($(TARGET_ARCH_ABI),x86_64)
    
                   LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg3.3.4-x86_64
    
                   LOCAL_SRC_FILES :=  videoEdit.c x86_64/ffmpeg.c x86_64/ffmpeg_filter.c x86_64/ffmpeg_opt.c x86_64/cmdutils.c
    
            else
    
                    LOCAL_C_INCLUDES:=/Users/MyName/AppData/Local/Android/sdk/ndk-bundle/sources/ffmpeg3.3.4-x86
    
                    LOCAL_SRC_FILES :=  videoEdit.c x86/ffmpeg.c x86/ffmpeg_filter.c x86/ffmpeg_opt.c x86/cmdutils.c
    
            endif
    
    
    
        endif
    
    
    
    endif
    
    
    
    LOCAL_SHARED_LIBRARIES := libavformat libavcodec libswscale libavutil libswresample libavfilter libavdevice libpostproc
    
    
    
    include $(BUILD_SHARED_LIBRARY)
    
    
    
    ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
    
    
    
        $(call import-module,ffmpeg-3.3.4-armeabi/android/armeabi-v7a)
    
    
    
    else
    
    
    
        ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
    
                $(call import-module,ffmpeg-3.3.4-arm64-v8a/android/arm64-v8a)
    
        else
    
    
    
            ifeq ($(TARGET_ARCH_ABI),x86_64)
    
                   $(call import-module,ffmpeg3.3.4-x86_64/android/x86_64)
    
            else
    
                $(call import-module,ffmpeg3.3.4-x86/android/i686-diasm)
    
            endif
    
    
    
        endif
    
    
    
    endif

  • Created Application.mk file in my project.

    APP_ABI := armeabi-v7a, arm64-v8a, x86_64, x86
    
    APP_PLATFORM := android-14

  • Created videoEdit.c than run ndk-build build command.

  Built with no error. I can run ffmpeg commands but it takes too much time i think. E.g when i try to run hflip it flips the video with 15 seconds.

  Code example :

  JNIEXPORT jint JNICALL Java_com_name_app_library_VideoEditer_natives_VideoEditer_flipHorizontally
  
  (JNIEnv *env, jclass someclass, jstring inputFile, jstring outFile) {
  
  
  
      int numberOfArgs = 14;
  
  
  
      char** arguments = calloc(numberOfArgs, sizeof(char*));
  
      const char *in, *out;
  
  
  
      in = (*env)->GetStringUTFChars(env, inputFile, 0);
  
      out = (*env)->GetStringUTFChars(env, outFile, 0);
  
  
  
      arguments[0] = "ffmpeg";
  
      arguments[1] = "-i";
  
      arguments[2] = in;
  
      arguments[3] = "-c:v";
  
      arguments[4] = "libx264";
  
      arguments[5] = "-preset";
  
      arguments[6] = "ultrafast";
  
      arguments[7] = "-threads";
  
      arguments[8] = "5";
  
      arguments[9] = "-c:a";
  
      arguments[10] = "copy";
  
      arguments[11] = "-vf";
  
      arguments[12] = "hflip";
  
      arguments[13] = out;
  
  
  
      int i;
  
      for (i = 0; i < numberOfArgs; i++) {
  
          log_message(arguments[i]);
  
      }
  
      log_message("Printed all");
  
  
  
      main(numberOfArgs, arguments);
  
      free(arguments);
  
      (*env)->ReleaseStringUTFChars(env, inputFile, in);
  
      (*env)->ReleaseStringUTFChars(env, outFile, out);
  
  
  
      return 0;
  
  }

  Also another thing to confusing my mind is output of ./configure command.
  When i open the (e.g) ffmpeg-3.3.4-arm64-v8a folder and run ./configure command in terminal. Output says ARCH   x86 (generic). For all platform output is the same ARCH   x86 (generic). Commands run on emaulator very fast but very slow on real device.

  Output of ./configure command in ffmpeg-3.3.4-arm64-v8a folder

  install prefix            /usr/local
  
  source path               .
  
  C compiler                gcc
  
  C library                 glibc
  
  ARCH                      x86 (generic)
  
  big-endian                no
  
  runtime cpu detection     yes
  
  yasm                      yes
  
  MMX enabled               yes
  
  MMXEXT enabled            yes
  
  3DNow! enabled            yes
  
  3DNow! extended enabled   yes
  
  SSE enabled               yes
  
  SSSE3 enabled             yes
  
  AESNI enabled             yes
  
  AVX enabled               yes
  
  XOP enabled               yes
  
  FMA3 enabled              yes
  
  FMA4 enabled              yes
  
  i686 features enabled     yes
  
  CMOV is fast              yes
  
  EBX available             yes
  
  EBP available             yes
  
  debug symbols             yes
  
  strip symbols             yes
  
  optimize for size         no
  
  optimizations             yes
  
  static                    yes
  
  shared                    no
  
  postprocessing support    no
  
  network support           yes
  
  threading support         pthreads
  
  safe bitstream reader     yes
  
  texi2html enabled         no
  
  perl enabled              yes
  
  pod2man enabled           yes
  
  makeinfo enabled          no
  
  makeinfo supports HTML    no
  
  
  
  External libraries:
  
  iconv            xlib

  EDIT all of these steps made on ubuntu then moved all folders to the windows. So dont be confuse about paths.

  With all of these steps i want to ask is, is there anything wrong on my steps. Should i follow any other way or not ? Why the ffmpeg is running slower on real device. I guess building ffmpeg for android is bit messy and making wrong things is very easy. If you look my steps, questions and give me an advice, i will be much appreciated.

• Revision 32595 : avec le numero de version des plugins

  1er novembre 2009, par fil@… — Log

  avec le numero de version des plugins

• Revision 37427 : mmmh c’est l’inverse manuel écrit brutalement ... non manuel d’une manière ...

  19 avril 2010, par kent1@… — Log

  mmmh c’est l’inverse manuel écrit brutalement ... non manuel d’une manière plus smooth