编译ffmpeg问题整理

export TMPDIR=F:/xxx/FFmpeg-master/temp
export NDK=D:/android-ndk-r9d-windows-x86_64/android-ndk-r9d
export PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt
export PLATFORM=$NDK/platforms/android-8/arch-arm
export PREFIX=F:/xxx/FFmpeg-master
export INCLUDE_DIR=F:/xxx/FFmpeg-master/include

export LIB=F:/xxx/FFmpeg-master/elib   

创建temp在cygwin下 chomd 777 temp

./configure --target-os=linux --prefix=$PREFIX \
--enable-cross-compile \
--enable-runtime-cpudetect \
--disable-asm \
--arch=arm \
--cc=$PREBUILT/windows-x86_64/bin/arm-linux-androideabi-gcc \
--cross-prefix=$PREBUILT/windows-x86_64/bin/arm-linux-androideabi- \
--disable-stripping \
--nm=$PREBUILT/windows-x86_64/bin/arm-linux-androideabi-nm \
--sysroot=$PLATFORM \
--enable-nonfree \
--disable-everything \
--enable-version3 \
--enable-gpl \
--disable-doc \
--enable-avresample \
--enable-demuxer=rtsp \
--enable-muxer=rtsp \
--enable-muxer=mp4 \
--enable-demuxer=mp4 \
--enable-encoders \
--enable-decoders \
--disable-ffplay \
--disable-ffserver \
--enable-ffmpeg \
--disable-ffprobe \
--enable-neon   \
--enable-protocol=file \
--enable-hwaccels \
--enable-zlib \
--disable-devices \
--enable-avdevice \
--enable-avfilter \
--enable-filter=movie \
--enable-avfilter \
--enable-filter=tnegate \
--disable-shared \
--enable-static \
--extra-cflags="-fPIC -DANDROID -D__thumb__ -mthumb -Wfatal-errors -Wno-deprecated -mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=armv7-a" \
--extra-ldflags="-L${LIB}"

make -j4 install

执行顺序：先export  configure make 

libavfilter/libavfilter.a
D:\android-ndk-r9d-windows-x86_64\android-ndk-r9d\toolchains\arm-linux-androideabi-4.6\prebuilt\windows-x86_64\bin\arm-linux-androideabi-ranlib.exe: '-D': No such file

解决办法：改掉config.mak 的 
RANLIB=D:/android-ndk-r9d/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-ranlib -D 改成-t

没有vector<char *> argv 没有argv.data() member 则改为 &argv[0]

将.a文件转化为 txt文件的命令
 nm libavfilter.a>1.txt

config.log 报这个错误Unable to create temporary file in E:/ffpmeg/FFmpeg-master/temp.  是没有给temp创建权限 chmod 777 temp

将多个a文件编译成so文件

将生成include下边的所有文件拷贝到jni下边，将lib也拷贝到jni下

编写android.mk

LOCAL_PATH := $(call my-dir)


include $(CLEAR_VARS)




LOCAL_MODULE    := ffmpeg


LOCAL_ARM_MODE := arm
#LOCAL_ALLOW_UNDEFINED_SYMBOLS := true
LOCAL_PRELINK_MODULE := false
LOCAL_CPPFLAGS := -UBANANA -DBANANA=300 -DLINUX -DANDROID


STL_PATH := \
        $(NDK_ROOT)/sources/cxx-stl/gnu-libstdc++/4.8/libs/armeabi-v7a/include \
   


LOCAL_C_INCLUDES := \
$(NDK_ROOT)/sources/cxx-stl/gnu-libstdc++/4.8/include \


LOCAL_LDLIBS := -ldl -llog -lz  -lm  -L$(STL_PATH) 




LOCAL_CFLAGS := -D__STDC_CONSTANT_MACROS -Wl,-Map=test.map -g


# -lUtils                 
LOCAL_LDFLAGS += -L$(LOCAL_PATH)/lib \
-lavformat \
-lavfilter              \
-lavcodec \
-lswresample            \
-lswscale               \
-lavutil \
 


LOCAL_C_INCLUDES+ := \
$(LOCAL_PATH)/libavutil \
$(LOCAL_PATH)/libavformat \
$(LOCAL_PATH)/libavcodec \
$(LOCAL_PATH)/libavfilter \
$(LOCAL_PATH)/libswresample \
$(LOCAL_PATH)/libswscale \






LOCAL_SRC_FILES := cmdutils.c \
                   ffmpeg_filter.c \
                   ffmpeg_opt.c \
                   ffmpegi.cpp \
  ffmpegx.c \
                   FFmpegJni.cpp \
                   
include $(BUILD_SHARED_LIBRARY)

Application.mk

APP_ABI := armeabi
# mips x86 armeabi-v7a
APP_STL :=gnustl_static
APP_PLATFORM:=android-15
NDK_TOOLCHAIN_VERSION = 4.8