主要参考文章：
http://bashell.sinaapp.com/archives/porting-ffmpeg-0-11-1-for-android-use-ndk8.html
http://blog.csdn.net/cbzhaojay/article/details/8524915?reload
相关环境:
linux
ndk-r8d
ffmpeg 1.1.2
大概过程和两篇文章差不多
主要注意几点：
1)
Android.mk 里面填入:
LOCAL_ARM_MODE := arm
2)
./configure 选项里面填入 –disable-asm
3)
把一项相关宏定义定义到config.h中
echo "#undef restrict" >> config.h
echo "#define restrict __restrict__" >> config.h
echo "#undef HAVE_CBRT" >> config.h
echo "#define HAVE_CBRT 1" >> config.h
echo "#undef HAVE_CBRTF" >> config.h
echo "#define HAVE_CBRTF 1" >> config.h
echo "#undef HAVE_ISINF" >> config.h
echo "#define HAVE_ISINF 1" >> config.h
echo "#undef HAVE_ISNAN" >> config.h
echo "#define HAVE_ISNAN 1" >> config.h
echo "#undef HAVE_RINT" >> config.h
echo "#define HAVE_RINT 1" >> config.h
echo "#undef HAVE_LRINT" >> config.h
echo "#define HAVE_LRINT 1" >> config.h
echo "#undef HAVE_LRINTF" >> config.h
echo "#define HAVE_LRINTF 1" >> config.h
echo "#undef HAVE_ROUND" >> config.h
echo "#define HAVE_ROUND 1" >> config.h
echo "#undef HAVE_ROUNDF" >> config.h
echo "#define HAVE_ROUNDF 1" >> config.h
echo "#undef HAVE_TRUNC" >> config.h
echo "#define HAVE_TRUNC 1" >> config.h
echo "#undef HAVE_TRUNCF" >> config.h
echo "#define HAVE_TRUNCF 1" >> config.h
4)
把libavutil/parseutils.h的<time.h>替换成<sys/../time.h>
5)
在自己工程里面加入一个函数int ff_get_cpu_flags_arm()
还行return什么都无所谓