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