建立与FFMPEG X264为Android [英] Build FFMPEG with x264 for Android
问题描述
我试图用libx264为Android打造FFMPEG。
I am trying to build FFMPEG with libx264 for Android.
我可以成功地建立和使用FFMPEG为Android，但我意识到，我需要的能力，EN code，所以我试图用X264打造FFMPEG。
I can successfully build and use FFMPEG for Android but I realized that I need the ability to encode, therefore I am trying to build FFMPEG with x264.
我使用本教程打造FFmpeg的Android版<一个href=\"http://www.roman10.net/how-to-build-ffmpeg-for-android/\">http://www.roman10.net/how-to-build-ffmpeg-for-android/
I am using this tutorial to build FFmpeg for Android http://www.roman10.net/how-to-build-ffmpeg-for-android/
当试图建立FFMPEG我得到一个错误：
When trying to build FFMPEG I get an error:
错误：libx264找不到
"ERROR: libx264 not found"
在我的日志中这样说的：
And in my log it says:
在/ usr / local / lib目录/ libx264.a：看不懂的符号：归档中没有
指数;运行ranlib命令添加一个...
"/usr/local/lib/libx264.a: could not read symbols: Archive has no index; run ranlib to add one..."
我都FFMPEG和X264的最新版本。
据我所知，FFMPEG会在usr / lib目录和usr / include目录的头和库，所以为了让它找到X264我用CFLAGS和LDFLAGS：
I have the latest versions of both FFMPEG and x264. I understand that FFMPEG looks for the header and libraries in usr/lib and usr/include, so in order to make it find x264 I use the cflags and ldflags:
- - 超CFLAGS =-I在/ usr /本地/包括
- - 超LDFLAGS =-L在/ usr / local / lib目录
我曾尝试建设与x264的其他人在互联网上已经说过，我需要很多不同的选择。例如。 --enable-共享，--enable静电，--disable-pthreads的等等。
有些论坛说，实现这一点，别人说没有禁用。
I have tried building x264 with many different options that other people on the internet have said that i need. eg. --enable-shared, --enable-static, --disable-pthreads etc. Some forums say enable this, others say no disable that.
任何帮助将是非常美联社preciated，
谢谢
Any help would be much appreciated, Thanks
编辑：
如果我用最简单的命令建造的FFmpeg包括libx264然后它工作。
即
If I build FFmpeg with the simplest commands to include libx264 then it works. ie.
./configure --enable-gpl --enable-libx264 --extra-cflags="-I/usr/local/include" --extra-ldflags="-L/usr/local/lib" --enable-static --enable-shared
不过我需要它来为Android工作。我使用的脚本是：
However I need it to work for Android. The script I am using is:
NDK=~/Desktop/android-ndk-r7
PLATFORM=$NDK/platforms/android-8/arch-arm/
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86
function build_one
{
./configure --target-os=linux \
--prefix=$PREFIX \
--enable-cross-compile \
--enable-shared \
--enable-static \
--extra-libs="-lgcc" \
--arch=arm \
--cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
--cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
--nm=$PREBUILT/bin/arm-linux-androideabi-nm \
--sysroot=$PLATFORM \
--extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS -I/usr/local/include" \
--extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L $PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog -L/usr/local/lib " \
--enable-gpl \
--enable-libx264 \
--disable-everything \
--enable-demuxer=mov \
--enable-demuxer=h264 \
--disable-ffplay \
--enable-protocol=file \
--enable-avformat \
--enable-avcodec \
--enable-decoder=rawvideo \
--enable-decoder=mjpeg \
--enable-decoder=h263 \
--enable-decoder=mpeg4 \
--enable-decoder=h264 \
--enable-encoder=mjpeg \
--enable-encoder=h263 \
--enable-encoder=mpeg4 \
--enable-encoder=h264 \
--enable-parser=h264 \
--disable-network \
--enable-zlib \
--disable-avfilter \
--disable-avdevice \
$ADDITIONAL_CONFIGURE_FLAG
make clean
make -j4 install
$PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
$PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -soname libffmpeg.so -shared -nostdlib -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a libswscale/libswscale.a -lc -lm -lz -ldl -llog --warn-once --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/libgcc.a
}
CPU=armv7-a
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
PREFIX=./android/$CPU
ADDITIONAL_CONFIGURE_FLAG=
build_one
我猜测，在我的configure命令一些选项与实现libx264发生冲突
I am guessing that some option in my configure command is conflicting with enabling libx264
请注意：如果删除--enable-libx264然后它
NOTE: If I remove --enable-libx264 then it works
推荐答案
FFmpeg的源$ C $ C似乎在更新，我可以编译ffmpeg的X264为Android NDK，如下。
The ffmpeg source code seems to be updated, and I could compile ffmpeg with x264 for Android NDK as the following.
2在halfninja-Android的ffmpeg的-X264-fe12be0 /项目/ JNI目录下，修改configure_ffmpeg.sh链接libgcc.a的解决无法解析__aeabi_f2uiz的问题。
2 At "halfninja-android-ffmpeg-x264-fe12be0/Project/jni" directory, modify "configure_ffmpeg.sh" to link "libgcc.a" for solving a problem that can not resolve "__aeabi_f2uiz".
./configure $DEBUG_FLAG --enable-cross-compile \
--arch=arm5te \
--enable-armv5te \
--target-os=linux \
--disable-stripping \
--prefix=../output \
--disable-neon \
--enable-version3 \
--disable-shared \
--enable-static \
--enable-gpl \
--enable-memalign-hack \
--cc=arm-linux-androideabi-gcc \
--ld=arm-linux-androideabi-ld \
--extra-cflags="-fPIC -DANDROID -D__thumb__ -mthumb -Wfatal-errors -Wno-deprecated -I../x264 -Ivideokit" \
$featureflags \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--disable-network \
--enable-filter=buffer \
--enable-filter=buffersink \
--disable-demuxer=v4l \
--disable-demuxer=v4l2 \
--disable-indev=v4l \
--disable-indev=v4l2 \
--extra-ldflags="-L../x264 -L../toolchain/lib/gcc/arm-linux-androideabi/4.4.3" \
--extra-libs="-lgcc"
3修改Android.mk链接新库libswresample.a。
3 Modify "Android.mk" to link new library "libswresample.a".
FFMPEG_LIBS := $(addprefix ffmpeg/, \
libavdevice/libavdevice.a \
libavformat/libavformat.a \
libavcodec/libavcodec.a \
libavfilter/libavfilter.a \
libswscale/libswscale.a \
libavutil/libavutil.a \
libswresample/libswresample.a \
libpostproc/libpostproc.a )
与那些在ffmpeg的目录
4更换videokit目录ffmpeg.c和cmdutils.c。
4 Replace ffmpeg.c and cmdutils.c in videokit directory with ones in ffmpeg directory.
5按照README.textile描述的过程。
5 Follow a procedure described in README.textile.
这篇关于建立与FFMPEG X264为Android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！
