使用NDK交叉编译ffmpeg, android后台可执行。

1，编译fdk-aac

wget -O fdk-aac.zip https://github.com/mstorsjo/fdk-aac/zipball/master
unzip fdk-aac.zip

cd mstorsjo-fdk-aac*

autoreconf -fiv

使用如下的配置文件

BUILD_PATH=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build

CC_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-gcc

CPP_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-cpp

./configure \

--prefix=$BUILD_PATH \

--build=arm \

CC=$CC_PATH \

CXX=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-g++ \

--host=arm-linux \

--enable-static \

然后

Make

Make installl

2,编译libx264

wget http://download.videolan.org/pub/x264/snapshots/last_x264.tar.bz2
tar xjvf last_x264.tar.bz2

cd x264-snapshot*

使用如下confiure

export ARM_ROOT=/home/zangcf/cross_compile/android-ndk-r9b

export ARM_INC=$ARM_ROOT/platforms/android-8/arch-arm/usr/include/

export ARM_LIB=$ARM_ROOT/platforms/android-8/arch-arm/usr/lib/

export ARM_TOOL=/home/zangcf/cross_compile/android-ndk-r9b/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64

export ARM_LIBO=/home/zangcf/cross_compile/android-ndk-r9b/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.8

export PATH=$ARM_TOOL/bin:$PATH

export ARM_PRE=arm-linux-androideabi

./configure --prefix=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build \

--extra-cflags=" -I$ARM_INC -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -DANDROID -Wa,--noexecstack -MMD -MP " \

--extra-ldflags=" -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system/lib/libz.so -Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$ARM_LIB -nostdlib $ARM_LIB/crtbegin_dynamic.o $ARM_LIB/crtend_android.o -lc -lm -ldl -lgcc " \

--cross-prefix=${ARM_PRE}- --disable-asm --host=arm-linux

make

make install

make distclean

2, 下载编译libvpx

wget http://webm.googlecode.com/files/libvpx-v1.3.0.tar.bz2
tar xjvf libvpx-v1.3.0.tar.bz2

cd libvpx-v1.3.0

./configure --sdk-path=/home/zangcf/cross_compile/android-ndk-r9b --target=armv7-android-gcc \

--disable-runtime-cpu-detect \

--prefix=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build

Make

Make install

3, libogg

下载最新版本libogg-1.3.1.tar.gz，注意老版本会有问题。

使用如下configure

#!/bin/sh

BUILD_PATH=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build

CC_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-gcc

CPP_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-cpp

./configure \

--prefix=$BUILD_PATH \

--build=arm \

CC=$CC_PATH \

CPP=$CPP_PATH \

--host=arm-linux \

--enable-static \

Make

Make install

4，libvorbis

下载最新版本libvorbis-1.3.4.tar.gz，注意老版本可能会有问题

使用如下的configure

#!/bin/sh

BUILD_PATH=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build

CC_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-gcc

CPP_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-cpp

./configure \

--prefix=$BUILD_PATH \

--build=arm \

CC=$CC_PATH \

CPP=$CPP_PATH \

--host=arm-linux \

--enable-static \

Make

Make install

5，解决NDK交叉编译 selected processor does not support ARM mode libtheora的错误

下载最新的libtheora, wget http://downloads.xiph.org/releases/theora/libtheora-1.2.0alpha1.tar.gz

解压缩，然后使用如下configure来编译

#!/bin/sh

BUILD_PATH=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build

CC_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-gcc

CPP_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-cpp

./configure \

--prefix=$BUILD_PATH \

--build=arm \

CC=$CC_PATH \

CPP=$CPP_PATH \

--host=arm-linux \

--enable-static \

--with-ogg=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build \

AS=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-as \

AR=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-ar \

然后make，结果出现如下错误

selected processor does not support ARM mode

很多很多

通过对编译文件的仔细研究，发现只要加一个

--disable-asm

配置选项，就可以完全解决这个问题

6，下载lame-3.99.5

解压，然后使用如下配置文件配置

#!/bin/sh

BUILD_PATH=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build

CC_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-gcc

CPP_PATH=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-cpp

./configure \

--prefix=$BUILD_PATH \

--build=arm \

CC=$CC_PATH \

CPP=$CPP_PATH \

--host=arm-linux \

--enable-static \

AS=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-as \

AR=/opt/android-ndk-toolchain/bin/arm-linux-androideabi-ar \

然后

Make

Make install

---libass 和libopus

4, 下载编译ffmpeg

wget http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2
tar xjvf ffmpeg-snapshot.tar.bz2

cd ffmpeg

使用如下configure

export ARM_ROOT=/home/zangcf/cross_compile/android-ndk-r9b

export ARM_INC=$ARM_ROOT/platforms/android-8/arch-arm/usr/include/

export ARM_LIB=$ARM_ROOT/platforms/android-8/arch-arm/usr/lib/

export ARM_TOOL=/home/zangcf/cross_compile/android-ndk-r9b/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64

export ARM_LIBO=/home/zangcf/cross_compile/android-ndk-r9b/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.8

export PATH=$ARM_TOOL/bin:$PATH

export ARM_PRE=arm-linux-androideabi

export LIB_INC=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build/include

export LIB_LIB=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build/lib

./configure --target-os=linux \

--arch=armv5te \

--enable-cross-compile \

--cc=$ARM_TOOL/bin/${ARM_PRE}-gcc \

--cross-prefix=$ARM_TOOL/bin/${ARM_PRE}- \

--extra-cflags=" -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -D

ANDROID -Wa,--noexecstack -MMD -MP " \

--enable-static \

--disable-shared --enable-libx264 --enable-gpl \

--disable-asm --disable-yasm \

--prefix=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build \

--disable-amd3dnow --disable-amd3dnowext --disable-mmx --disable-sse --disable-ssse3 \

--extra-cflags="-I$ARM_INC -std=gnu99 -I$LIB_INC " \

--extra-libs="-lc -lm -ldl -lgcc -lz -lx264 " \

--extra-ldflags=" -L$LIB_LIB -Wl,-rpath-link=$LIB_LIB -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system/lib/libz.so

-Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$ARM_LIB -nostdlib $ARM_LIB/crtbegin_dynamic.o $ARM_LIB/crtend_android.o "

/////////////////////////////////////////////////////////////////////

执行configure的时候，怎么都提示找不到h264,经过仔细分析研读，分析configure文件，发现是x264的编译选项有问题，少了一个--enable-static

加上这个选项，重新编译x264,呵呵ffmpeg的配置编译都通过了。

make

make install

make distclean

hash -r

最后确定的configure需要增加很多解码工具，配置如下

export ARM_ROOT=/home/zangcf/cross_compile/android-ndk-r9b

export ARM_INC=$ARM_ROOT/platforms/android-8/arch-arm/usr/include/

export ARM_LIB=$ARM_ROOT/platforms/android-8/arch-arm/usr/lib/

export ARM_TOOL=/home/zangcf/cross_compile/android-ndk-r9b/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64

export ARM_LIBO=/home/zangcf/cross_compile/android-ndk-r9b/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.8

export PATH=$ARM_TOOL/bin:$PATH

export ARM_PRE=arm-linux-androideabi

export LIB_INC=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build/include

export LIB_LIB=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build/lib

PKG_CONFIG_PATH=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build/lib/pkgconfig

./configure --target-os=linux \

--pkg-config=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build/lib/pkgconfig \

--arch=armv5te \

--enable-cross-compile \

--cc=$ARM_TOOL/bin/${ARM_PRE}-gcc \

--cross-prefix=$ARM_TOOL/bin/${ARM_PRE}- \

--extra-cflags=" -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -D ANDROID -Wa,--noexecstack -MMD -MP -I$LIB_INC -I$ARM_INC -std=gnu99" \

--enable-static \

--disable-shared --enable-libx264 --enable-gpl \

--disable-asm --disable-yasm \

--prefix=/home/zangcf/ffmpeg/ffmpeg_arm/ffmpeg_build \

--disable-amd3dnow --disable-amd3dnowext --disable-mmx --disable-sse --disable-ssse3 \

--extra-libs="-lc -lm -ldl -lgcc -lz -lx264 -lopus" \

--extra-ldflags=" -L$LIB_LIB -Wl,-rpath-link=$LIB_LIB -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system/lib/libz.so

-Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$ARM_LIB -nostdlib $ARM_LIB/crtbegin_dynamic.o $ARM_LIB/crtend_android.o " \

--enable-libfdk-aac \

--enable-nonfree \

--enable-libvpx \

--enable-libvorbis \

--enable-libtheora \

--enable-libmp3lame \