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158 lines
4.0 KiB
158 lines
4.0 KiB
#!/usr/bin/env bash
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FFMPEG_VERSION=4.1.4
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# Assuming the script is used on macOS or Linux machine
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case "$OSTYPE" in
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darwin*) HOST_TAG="darwin-x86_64" ;;
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linux*) HOST_TAG="linux-x86_64" ;;
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esac
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# Directories used by the script
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BASE_DIR="$( cd "$( dirname "$0" )" && pwd )"
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SOURCES_DIR=${BASE_DIR}/sources
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FFMPEG_SOURCES=${SOURCES_DIR}/ffmpeg-${FFMPEG_VERSION}
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OUTPUT_DIR=${BASE_DIR}/output
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BUILD_DIR=${BASE_DIR}/build
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STATS_DIR=${BASE_DIR}/stats
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# No incremental compilation here. Just drop what was built previously
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rm -rf ${BUILD_DIR}
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rm -rf ${STATS_DIR}
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rm -rf ${OUTPUT_DIR}
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mkdir -p ${STATS_DIR}
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mkdir -p ${OUTPUT_DIR}
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# Test if sources of the FFmpeg exist. If not - download them
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function ensureSources() {
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if [[ ! -d "$FFMPEG_SOURCES" ]]; then
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TARGET_FILE_NAME=ffmpeg-${FFMPEG_VERSION}.tar.bz2
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TARGET_FILE_PATH=${SOURCES_DIR}/${TARGET_FILE_NAME}
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mkdir -p ${SOURCES_DIR}
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curl https://www.ffmpeg.org/releases/${TARGET_FILE_NAME} --output ${TARGET_FILE_PATH}
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tar xvjf ${TARGET_FILE_PATH} -C ${SOURCES_DIR}
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rm ${TARGET_FILE_PATH}
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fi
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}
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# Actual magic of configuring and compiling of FFmpeg for a certain architecture.
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# Supported architectures are: armeabi-v7a, arm64-v8a, x86 and x86_64
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function assemble() {
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cd ${FFMPEG_SOURCES}
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ARCH=$1
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API_LEVEL=$2
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TOOLCHAIN_PATH=${ANDROID_NDK_HOME}/toolchains/llvm/prebuilt/${HOST_TAG}
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SYSROOT=${TOOLCHAIN_PATH}/sysroot
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CC_ANDROID_POSTFIX=
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EXTRA_CFLAGS=
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EXTRA_CONFIGURE_FLAGS=
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case $ARCH in
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armeabi-v7a)
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FFMPEG_ARCH_FLAG=arm
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CROSS_PREFIX=arm-linux-androideabi-
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CC_PREFIX=armv7a
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CC_ANDROID_POSTFIX=eabi
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;;
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arm64-v8a)
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FFMPEG_ARCH_FLAG=aarch64
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CROSS_PREFIX=aarch64-linux-android-
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CC_PREFIX=aarch64
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;;
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x86)
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FFMPEG_ARCH_FLAG=x86
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CROSS_PREFIX=i686-linux-android-
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CC_PREFIX=i686
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EXTRA_CFLAGS=-mno-stackrealign
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EXTRA_CONFIGURE_FLAGS=--disable-asm
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;;
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x86_64)
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FFMPEG_ARCH_FLAG=x86_64
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CROSS_PREFIX=x86_64-linux-android-
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CC_PREFIX=x86_64
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EXTRA_CONFIGURE_FLAGS=--x86asmexe=${TOOLCHAIN_PATH}/bin/yasm
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;;
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esac
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CC=${TOOLCHAIN_PATH}/bin/${CC_PREFIX}-linux-android${CC_ANDROID_POSTFIX}${API_LEVEL}-clang
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./configure \
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--prefix=${BUILD_DIR}/${ARCH} \
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--disable-doc \
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--enable-cross-compile \
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--cross-prefix=${TOOLCHAIN_PATH}/bin/${CROSS_PREFIX} \
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--target-os=android \
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--cc=${CC} \
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--arch=${FFMPEG_ARCH_FLAG} \
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--extra-cflags="-O3 -fPIC $EXTRA_CFLAGS" \
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--sysroot=${SYSROOT} \
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--enable-shared \
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--disable-static \
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--disable-debug \
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--disable-runtime-cpudetect \
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--disable-programs \
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--disable-muxers \
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--disable-encoders \
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--disable-bsfs \
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--disable-pthreads \
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--disable-avdevice \
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--disable-network \
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--disable-postproc \
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--disable-swresample \
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--disable-avfilter \
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${EXTRA_CONFIGURE_FLAGS}
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make clean
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make -j8
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make install
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# Saving stats about text relocation presence.
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# If the result file doesn't have 'TEXTREL' at all, then we are good.
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${TOOLCHAIN_PATH}/bin/${CROSS_PREFIX}readelf --dynamic ${BUILD_DIR}/${ARCH}/lib/*.so | grep 'TEXTREL\|File' >> ${STATS_DIR}/text-relocations.txt
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cd ${BASE_DIR}
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}
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# Placing build *.so files into the /bin directory
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function installLibs() {
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BUILD_SUBDIR=$1
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OUTPUT_SUBDIR=${OUTPUT_DIR}/lib/${BUILD_SUBDIR}
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CP_DIR=${BUILD_DIR}/${BUILD_SUBDIR}
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mkdir -p ${OUTPUT_SUBDIR}
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cp ${CP_DIR}/lib/*.so ${OUTPUT_SUBDIR}
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}
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function build() {
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ARCH=$1
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ANDROID_API=$2
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assemble ${ARCH} ${ANDROID_API}
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installLibs ${ARCH}
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}
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# Placing build header files into the /bin directory
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# Note, there is a only one such a folder since this headers are the same for all architectures
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# May not be true for different configurations though
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function installHeaders() {
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cd ${BUILD_DIR}
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cd "$(ls -1 | head -n1)"
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cp -r include ${OUTPUT_DIR}
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cd ${BASE_DIR}
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}
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# Actual work
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ensureSources
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build armeabi-v7a 16
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build arm64-v8a 21
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build x86 16
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build x86_64 21
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installHeaders
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