Ubuntu下ffmpeg-4.0編譯android所需的so庫
阿新 • • 發佈:2018-12-18
網上教程很多,之前編譯過,現在時間比較充裕,重新編譯下,我這也是參考了很多地方,簡單記錄下 (之前配置過環境,如ndk等,這裡就不寫了)
1.下載、解壓ffmpeg-4.0
wget https://ffmpeg.org/releases/ffmpeg-4.0.tar.bz2
tar xvf ffmpeg-4.0.tar.bz2
2.修改configure
進入原始碼根目錄,用gedit開啟configure,找到
SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)' LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"' SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)' SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
將其替換為:
SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB)"$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS='$(SLIBNAME)'
3.然後編寫編譯指令碼 在源目錄下新建 build.sh,內容如下:
#!/bin/bash NDK=/home/user/android/android-ndk-r14b SYSROOT=$NDK/platforms/android-21/arch-arm/ CPU=armv7-a TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 PREFIX=$(pwd)/android/$CPU OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU " function build_android { ./configure \ --prefix=$PREFIX \ --enable-neon \ --enable-hwaccels \ --enable-shared \ --enable-jni \ --enable-mediacodec \ --enable-decoder=h264_mediacodec \ --disable-static \ --disable-doc \ --enable-ffmpeg \ --disable-ffplay \ --disable-ffprobe \ --enable-avdevice \ --disable-doc \ --disable-symver \ --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \ --target-os=android \ --arch=arm \ --cpu=armv7-a \ --enable-cross-compile \ --sysroot=$SYSROOT \ --extra-cflags="-Os -fpic $OPTIMIZE_CFLAGS" \ --extra-ldflags="$ADDI_LDFLAGS" \ $ADDITIONAL_CONFIGURE_FLAG } build_android
賦予指令碼執行許可權:chmod +x build.sh
執行指令碼:./build.sh
然後出現警告:arm-linux-androideabi-pkg-config not found, library detection may fail.
不用管,繼續執行:
make
make install
接下來就是等待…