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#!/bin/bash
#
# Copyright (c) 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script has been modified for use in Android. It is used to generate .bp
# files and files in the config/ directories needed to build libaom.
#
# Every time the upstream source code is updated this script must be run.
#
# Usage:
# $ ./generate_config.sh
# Requirements:
# Install the following Debian packages.
# - cmake3
# - yasm or nasm
# Toolchain for armv7:
# - gcc-arm-linux-gnueabihf
# - g++-arm-linux-gnueabihf
# Toolchain for arm64:
# - gcc-aarch64-linux-gnu
# - g++-aarch64-linux-gnu
# 32bit build environment for cmake. Including but potentially not limited to:
# - lib32gcc-7-dev
# - lib32stdc++-7-dev
# Alternatively: treat 32bit builds like Windows and manually tweak aom_config.h
set -eE
# sort() consistently.
export LC_ALL=C
BASE=$(pwd)
SRC="${BASE}/libaom"
CFG="${BASE}/config"
TMP=$(mktemp -d "${BASE}/build.XXXX")
# Clean up and prepare config directory
rm -rf "${CFG}"
mkdir -p "${CFG}/config"
function clean {
rm -rf "${TMP}"
}
# Create empty temp and config directories.
# $1 - Header file directory.
function reset_dirs {
cd "${BASE}"
rm -rf "${TMP}"
mkdir "${TMP}"
cd "${TMP}"
echo "Generate ${1} config files."
mkdir -p "${CFG}/${1}/config"
}
if [ $# -ne 0 ]; then
echo "Unknown option(s): ${@}"
exit 1
fi
# Missing function:
# find_duplicates
# We may have enough targets to avoid re-implementing this.
# Generate Config files.
# $1 - Header file directory.
# $2 - cmake options.
function gen_config_files {
cmake "${SRC}" ${2} &> cmake.txt
case "${1}" in
x86*)
egrep "#define [A-Z0-9_]+ [01]" config/aom_config.h | \
awk '{print "%define " $2 " " $3}' > config/aom_config.asm
;;
esac
cp config/aom_config.{h,c,asm} "${CFG}/${1}/config/"
cp config/*_rtcd.h "${CFG}/${1}/config/"
#clang-format -i "${CFG}/${1}/config/"*_rtcd.h
}
function update_readme {
local IFS=$'\n'
# Split git log output '<date>\n<commit hash>' on the newline to produce 2
# array entries.
local vals=($(git -C "${SRC}" --no-pager log -1 --format="%cd%n%H" \
--date=format:"%A %B %d %Y"))
sed -E -i.bak \
-e "s/^(Date:)[[:space:]]+.*$/\1 ${vals[0]}/" \
-e "s/^(Commit:)[[:space:]]+[a-f0-9]{40}/\1 ${vals[1]}/" \
${BASE}/README.android
rm ${BASE}/README.android.bak
cat <<EOF
README.android updated with:
Date: ${vals[0]}
Commit: ${vals[1]}
EOF
}
cd "${TMP}"
# Scope 'trap' error reporting to configuration generation.
(
trap '{
[ -f ${TMP}/cmake.txt ] && cat ${TMP}/cmake.txt
echo "Build directory ${TMP} not removed automatically."
}' ERR
all_platforms="-DCONFIG_SIZE_LIMIT=1"
all_platforms+=" -DDECODE_HEIGHT_LIMIT=16384 -DDECODE_WIDTH_LIMIT=16384"
all_platforms+=" -DCONFIG_AV1_ENCODER=0"
all_platforms+=" -DCONFIG_LOWBITDEPTH=1"
all_platforms+=" -DCONFIG_MAX_DECODE_PROFILE=0"
all_platforms+=" -DCONFIG_NORMAL_TILE_MODE=1"
# Android requires ssse3. Simplify the build by disabling everything above that
# and RTCD.
all_platforms+=" -DENABLE_SSE4_1=0"
all_platforms+=" -DCONFIG_RUNTIME_CPU_DETECT=0"
toolchain="-DCMAKE_TOOLCHAIN_FILE=${SRC}/build/cmake/toolchains"
reset_dirs x86
gen_config_files x86 "${toolchain}/x86-linux.cmake ${all_platforms} -DCONFIG_PIC=1"
# libaom_srcs.gni and aom_version.h are shared.
cp libaom_srcs.gni "${BASE}"
cp config/aom_version.h "${CFG}/config/"
reset_dirs x86_64
gen_config_files x86_64 "${all_platforms}"
reset_dirs arm
gen_config_files arm "${toolchain}/armv7-linux-gcc.cmake ${all_platforms}"
reset_dirs arm64
gen_config_files arm64 "${toolchain}/arm64-linux-gcc.cmake ${all_platforms}"
)
# This needs to be run by update_libaom.sh before the .git file is removed.
#update_readme
# libaom_srcs.gni was built for Chromium. Remove:
# - the path prefix (//third_party/libaom/source/)
# - comments (lines starting with #)
# - header files
# - perl scripts (rtcd)
rm -f "${BASE}/Android.bp"
(
echo "// THIS FILE IS AUTOGENERATED, DO NOT EDIT"
echo "// Generated from Android.bp.in, run ./generate_config.sh to regenerate"
echo
cat "${BASE}/libaom_srcs.gni" |
grep -v ^\# |
sed 's/\/\/third_party\/libaom\/source\///' |
grep -v h\",$ |
grep -v pl\",$
cat "${BASE}/Android.bp.in"
) > "${BASE}/Android.bp"
rm -f "${BASE}/libaom_srcs.gni"
bpfmt -w "${BASE}/Android.bp" || echo "bpfmt not found: format Android.bp manually."
clean