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

249 lines
6.6 KiB

#!/usr/bin/env bash
FFMPEG_FALLBACK_VERSION=4.2.1
# Defining a toolchain directory's name according to the current OS.
# Assume that proper version of NDK is installed.
case "$OSTYPE" in
darwin*) HOST_TAG="darwin-x86_64" ;;
linux*) HOST_TAG="linux-x86_64" ;;
msys)
case "$(uname -m)" in
x86_64) HOST_TAG="windows-x86_64" ;;
i686) HOST_TAG="windows" ;;
esac
;;
esac
if [[ $OSTYPE == "darwin"* ]]; then
NPROC=$(sysctl -n hw.physicalcpu)
else
NPROC=$(nproc)
fi
# Directories used by the script
BASE_DIR="$( cd "$( dirname "$0" )" && pwd )"
SOURCES_DIR=${BASE_DIR}/sources
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}
# Note: the 'source' folder wasn't actually deleted, just ensure it exists
mkdir -p ${SOURCES_DIR}
# Utility function
# Getting sources of a particular ffmpeg release.
# Same argument (ffmpeg version) produces the same source set.
function ensureSourcesTag() {
FFMPEG_VERSION=$1
FFMPEG_SOURCES=${SOURCES_DIR}/ffmpeg-${FFMPEG_VERSION}
if [[ ! -d "$FFMPEG_SOURCES" ]]; then
TARGET_FILE_NAME=ffmpeg-${FFMPEG_VERSION}.tar.bz2
TARGET_FILE_PATH=${SOURCES_DIR}/${TARGET_FILE_NAME}
curl https://www.ffmpeg.org/releases/${TARGET_FILE_NAME} --output ${TARGET_FILE_PATH}
tar xvjf ${TARGET_FILE_PATH} -C ${SOURCES_DIR}
rm ${TARGET_FILE_PATH}
fi
}
# Utility function
# Getting sources of a particular branch of ffmpeg's git repository.
# Same argument (branch name) may produce different source set,
# as the branch in origin repository may be updated in future.
function ensureSourcesBranch() {
BRANCH=$1
GIT_DIRECTORY=ffmpeg-git
FFMPEG_SOURCES=${SOURCES_DIR}/${GIT_DIRECTORY}
cd ${SOURCES_DIR}
if [[ ! -d "$FFMPEG_SOURCES" ]]; then
git clone https://git.ffmpeg.org/ffmpeg.git ${GIT_DIRECTORY}
fi
cd ${GIT_DIRECTORY}
git checkout $BRANCH
# Forcing the update of a branch
git pull origin $BRANCH
# Additional logging to keep track of an exact commit to build
echo "Commit to build:"
git rev-parse HEAD
cd ${BASE_DIR}
}
# Utility function
# Test if sources of the FFmpeg exist. If not - download them
function ensureSources() {
TYPE=$1
SECOND_ARGUMENT=$2
case $TYPE in
tag)
echo "Using FFmpeg ${SECOND_ARGUMENT}"
ensureSourcesTag ${SECOND_ARGUMENT}
;;
branch)
echo "Using FFmpeg git repository and its branch ${SECOND_ARGUMENT}"
ensureSourcesBranch ${SECOND_ARGUMENT}
;;
*)
echo "Using FFmpeg ${FFMPEG_FALLBACK_VERSION}"
ensureSourcesTag ${FFMPEG_FALLBACK_VERSION}
;;
esac
}
# Actual magic of configuring and compiling of FFmpeg for a certain ABIs.
# Supported ABIs are: armeabi-v7a, arm64-v8a, x86 and x86_64
function assemble() {
cd ${FFMPEG_SOURCES}
ABI=$1
API_LEVEL=$2
TOOLCHAIN_PATH=${ANDROID_NDK_HOME}/toolchains/llvm/prebuilt/${HOST_TAG}
SYSROOT=${TOOLCHAIN_PATH}/sysroot
TARGET_TRIPLE_MACHINE_BINUTILS=
TARGET_TRIPLE_MACHINE_CC=
TARGET_TRIPLE_OS="android"
case $ABI in
armeabi-v7a)
#cc armv7a-linux-androideabi16-clang
#binutils arm -linux-androideabi -ld
TARGET_TRIPLE_MACHINE_BINUTILS=arm
TARGET_TRIPLE_MACHINE_CC=armv7a
TARGET_TRIPLE_OS=androideabi
EXTRA_BUILD_CONFIGURATION_FLAGS=--enable-thumb
;;
arm64-v8a)
#cc aarch64-linux-android21-clang
#binutils aarch64-linux-android -ld
TARGET_TRIPLE_MACHINE_BINUTILS=aarch64
;;
x86)
#cc i686-linux-android16-clang
#binutils i686-linux-android -ld
TARGET_TRIPLE_MACHINE_BINUTILS=i686
# Disabling assembler optimizations, because they have text relocations
EXTRA_BUILD_CONFIGURATION_FLAGS=--disable-asm
;;
x86_64)
#cc x86_64-linux-android21-clang
#binutils x86_64-linux-android -ld
TARGET_TRIPLE_MACHINE_BINUTILS=x86_64
EXTRA_BUILD_CONFIGURATION_FLAGS=--x86asmexe=${TOOLCHAIN_PATH}/bin/yasm
;;
esac
# If the cc-specific variable isn't set, we fallback to binutils version
[ -z "${TARGET_TRIPLE_MACHINE_CC}" ] && TARGET_TRIPLE_MACHINE_CC=${TARGET_TRIPLE_MACHINE_BINUTILS}
# Common prefix for ld, as, etc.
CROSS_PREFIX=${TOOLCHAIN_PATH}/bin/${TARGET_TRIPLE_MACHINE_BINUTILS}-linux-${TARGET_TRIPLE_OS}-
# The name for compiler is slightly different, so it is defined separatly.
CC=${TOOLCHAIN_PATH}/bin/${TARGET_TRIPLE_MACHINE_CC}-linux-${TARGET_TRIPLE_OS}${API_LEVEL}-clang
# Everything that goes below ${EXTRA_BUILD_CONFIGURATION_FLAGS} is my project-specific.
# You are free to enable/disable whatever you actually need.
./configure \
--prefix=${BUILD_DIR}/${ABI} \
--enable-cross-compile \
--target-os=android \
--arch=${TARGET_TRIPLE_MACHINE_BINUTILS} \
--sysroot=${SYSROOT} \
--cross-prefix=${CROSS_PREFIX} \
--cc=${CC} \
--extra-cflags="-O3 -fPIC" \
--enable-shared \
--disable-static \
${EXTRA_BUILD_CONFIGURATION_FLAGS} \
--disable-runtime-cpudetect \
--disable-programs \
--disable-muxers \
--disable-encoders \
--disable-avdevice \
--disable-postproc \
--disable-swresample \
--disable-avfilter \
--disable-doc \
--disable-debug \
--disable-pthreads \
--disable-network \
--disable-bsfs
make clean
make -j${NPROC}
make install
# Saving stats about text relocation presence.
# If the result file doesn't have 'TEXTREL' at all, then we are good.
TEXT_REL_STATS_FILE=${STATS_DIR}/text-relocations.txt
${CROSS_PREFIX}readelf --dynamic ${BUILD_DIR}/${ABI}/lib/*.so | grep 'TEXTREL\|File' >> ${TEXT_REL_STATS_FILE}
if grep -q TEXTREL ${TEXT_REL_STATS_FILE}; then
echo "There are text relocations in output files:"
cat ${TEXT_REL_STATS_FILE}
exit 1
fi
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() {
ABI=$1
ANDROID_API=$2
assemble ${ABI} ${ANDROID_API}
installLibs ${ABI}
}
# 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 ABIs.
# 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 $1 $2
build armeabi-v7a 16
build arm64-v8a 21
build x86 16
build x86_64 21
installHeaders