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ffmpeg-android-maker/ffmpeg-android-maker.sh

158 lines
4.0 KiB

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