# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=5

if [[ ${PV} == *9999 ]] ; then
	SCM="git-2"
	EGIT_REPO_URI="git://git.libav.org/libav.git"
	[[ ${PV%9999} != "" ]] && EGIT_BRANCH="release/${PV%.9999}"
fi

inherit eutils flag-o-matic multilib multilib-minimal toolchain-funcs ${SCM}

DESCRIPTION="Complete solution to record, convert and stream audio and video"
HOMEPAGE="https://libav.org/"
if [[ ${PV} == *9999 ]] ; then
	SRC_URI=""
elif [[ ${PV%_p*} != ${PV} ]] ; then # Gentoo snapshot
	SRC_URI="https://dev.gentoo.org/~lu_zero/libav/${P}.tar.xz"
else # Official release
	SRC_URI="https://${PN}.org/releases/${P}.tar.xz"
fi

SRC_URI+=" test? ( https://dev.gentoo.org/~lu_zero/libav/fate-9.tar.xz )"

LICENSE="LGPL-2.1  gpl? ( GPL-3 )"
SLOT="0/9"

# Don't move KEYWORDS on the previous line or ekeyword won't work # 399061
[[ ${PV} == *9999 ]] || \
KEYWORDS="alpha amd64 arm hppa ia64 ~mips ppc ppc64 sparc x86 ~x86-fbsd ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~x64-solaris ~x86-solaris"

IUSE="aac alsa amr +bzip2 cdio cpudetection custom-cflags debug doc	+encode
	faac fdk frei0r +gpl gsm +hardcoded-tables ieee1394 jack jpeg2k mp3
	+network openssl opus oss pic pulseaudio rtmp schroedinger sdl speex ssl
	static-libs test theora threads tools truetype v4l vaapi vdpau vorbis vpx X
	x264 xvid +zlib"

# String for CPU features in the useflag[:configure_option] form
# if :configure_option isn't set, it will use 'useflag' as configure option
CPU_FEATURES="cpu_flags_x86_3dnow:amd3dnow cpu_flags_x86_3dnowext:amd3dnowext altivec cpu_flags_x86_avx:avx cpu_flags_x86_mmx:mmx cpu_flags_x86_mmxext:mmxext neon cpu_flags_x86_ssse3:ssse3 vis"
for i in ${CPU_FEATURES} ; do
	IUSE+=" ${i%:*}"
done

RDEPEND="
	!media-video/ffmpeg:0
	alsa? ( >=media-libs/alsa-lib-1.0.27.2[${MULTILIB_USEDEP}] )
	amr? ( >=media-libs/opencore-amr-0.1.3-r1[${MULTILIB_USEDEP}] )
	bzip2? ( >=app-arch/bzip2-1.0.6-r4[${MULTILIB_USEDEP}] )
	cdio? (
		|| (
			>=dev-libs/libcdio-paranoia-0.90_p1-r1[${MULTILIB_USEDEP}]
			<dev-libs/libcdio-0.90[-minimal,${MULTILIB_USEDEP}]
		)
	)
	encode? (
		aac? ( >=media-libs/vo-aacenc-0.1.3[${MULTILIB_USEDEP}] )
		amr? ( >=media-libs/vo-amrwbenc-0.1.2-r1[${MULTILIB_USEDEP}] )
		faac? ( >=media-libs/faac-1.28-r3[${MULTILIB_USEDEP}] )
		fdk? ( >=media-libs/fdk-aac-0.1.2[${MULTILIB_USEDEP}] )
		mp3? ( >=media-sound/lame-3.99.5-r1[${MULTILIB_USEDEP}] )
		theora? (
			>=media-libs/libtheora-1.1.1[encode,${MULTILIB_USEDEP}]
			>=media-libs/libogg-1.3.0[${MULTILIB_USEDEP}]
		)
		vorbis? (
			>=media-libs/libvorbis-1.3.3-r1[${MULTILIB_USEDEP}]
			>=media-libs/libogg-1.3.0[${MULTILIB_USEDEP}]
		)
		x264? ( >=media-libs/x264-0.0.20130506:=[${MULTILIB_USEDEP}] )
		xvid? ( >=media-libs/xvid-1.3.2-r1[${MULTILIB_USEDEP}] )
	)
	frei0r? ( media-plugins/frei0r-plugins )
	gsm? ( >=media-sound/gsm-1.0.13-r1[${MULTILIB_USEDEP}] )
	ieee1394? (
		>=media-libs/libdc1394-2.2.1[${MULTILIB_USEDEP}]
		>=sys-libs/libraw1394-2.1.0-r1[${MULTILIB_USEDEP}]
	)
	jack? ( >=media-sound/jack-audio-connection-kit-0.121.3-r1[${MULTILIB_USEDEP}] )
	jpeg2k? ( >=media-libs/openjpeg-1.5.0:0[${MULTILIB_USEDEP}] )
	opus? ( >=media-libs/opus-1.0.2-r2[${MULTILIB_USEDEP}] )
	pulseaudio? ( >=media-sound/pulseaudio-2.1-r1[${MULTILIB_USEDEP}] )
	rtmp? ( >=media-video/rtmpdump-2.4_p20131018[${MULTILIB_USEDEP}] )
	ssl? (
		openssl? ( >=dev-libs/openssl-1.0.1h-r2[${MULTILIB_USEDEP}] )
		!openssl? ( >=net-libs/gnutls-2.12.23-r6[${MULTILIB_USEDEP}] )
	)
	sdl? ( >=media-libs/libsdl-1.2.15-r4[sound,video,${MULTILIB_USEDEP}] )
	schroedinger? ( >=media-libs/schroedinger-1.0.11-r1[${MULTILIB_USEDEP}] )
	speex? ( >=media-libs/speex-1.2_rc1-r1[${MULTILIB_USEDEP}] )
	truetype? ( >=media-libs/freetype-2.5.0.1:2[${MULTILIB_USEDEP}] )
	vaapi? ( >=x11-libs/libva-1.2.1-r1[${MULTILIB_USEDEP}] )
	vdpau? ( >=x11-libs/libvdpau-0.7[${MULTILIB_USEDEP}] )
	vpx? ( >=media-libs/libvpx-1.2.0_pre20130625[${MULTILIB_USEDEP}] )
	X? (
		>=x11-libs/libX11-1.6.2[${MULTILIB_USEDEP}]
		>=x11-libs/libXext-1.3.2[${MULTILIB_USEDEP}]
		>=x11-libs/libXfixes-5.0.1[${MULTILIB_USEDEP}]
	)
	zlib? ( >=sys-libs/zlib-1.2.8-r1[${MULTILIB_USEDEP}] )
"

DEPEND="${RDEPEND}
	>=sys-devel/make-3.81
	doc? ( app-text/texi2html )
	ieee1394? ( >=virtual/pkgconfig-0-r1[${MULTILIB_USEDEP}] )
	cpu_flags_x86_mmx? ( dev-lang/yasm )
	rtmp? ( >=virtual/pkgconfig-0-r1[${MULTILIB_USEDEP}] )
	schroedinger? ( >=virtual/pkgconfig-0-r1[${MULTILIB_USEDEP}] )
	ssl? ( >=virtual/pkgconfig-0-r1[${MULTILIB_USEDEP}] )
	test? ( sys-devel/bc )
	truetype? ( >=virtual/pkgconfig-0-r1[${MULTILIB_USEDEP}] )
	v4l? ( sys-kernel/linux-headers )
"

# faac can't be binary distributed
# openssl support marked as nonfree
# faac and aac are concurent implementations
# amr and aac require at least lgpl3
# x264 requires gpl2
REQUIRED_USE="rtmp? ( network )
	amr? ( gpl ) aac? ( gpl ) x264? ( gpl ) X? ( gpl ) cdio? ( gpl )
	test? ( encode zlib )
"
RESTRICT="faac? ( bindist ) fdk? ( bindist ) openssl? ( bindist )"

MULTILIB_WRAPPED_HEADERS=(
	/usr/include/libavutil/avconfig.h
)

src_prepare() {
	# if we have snapshot then we need to hardcode the version
	if [[ ${PV%_p*} != ${PV} ]]; then
		sed -i -e "s/UNKNOWN/DATE-${PV#*_pre}/" "${S}/version.sh" || die
	fi

	TOOLS=( aviocat graph2dot ismindex pktdumper qt-faststart trasher )
	use zlib && TOOLS+=( cws2fws )

	MAKEOPTS+=" V=1"
}

multilib_src_configure() {
	local myconf=( ${EXTRA_LIBAV_CONF} )
	local uses i

	myconf+=(
		$(use_enable gpl)
		$(use_enable gpl version3)
		--enable-avfilter
	)

	# enabled by default
	uses="debug doc network zlib"
	for i in ${uses}; do
		use ${i} || myconf+=( --disable-${i} )
	done
	use bzip2 || myconf+=( --disable-bzlib )
	use sdl || myconf+=( --disable-avplay )

	if use ssl; then
		use openssl && myconf+=( --enable-openssl --enable-nonfree ) \
			|| myconf+=( --enable-gnutls )
	fi

	use custom-cflags && myconf+=( --disable-optimizations )
	use cpudetection && myconf+=( --enable-runtime-cpudetect )

	use vdpau || myconf+=( --disable-vdpau )

	use vaapi && myconf+=( --enable-vaapi )

	# Encoders
	if use encode; then
		use faac && myconf+=( --enable-nonfree )
		use fdk && myconf+=( --enable-nonfree --enable-libfdk-aac )
		use mp3 && myconf+=( --enable-libmp3lame )
		use amr && myconf+=( --enable-libvo-amrwbenc )
		use aac && myconf+=( --enable-libvo-aacenc )
		uses="faac theora vorbis x264 xvid"
		for i in ${uses}; do
			use ${i} && myconf+=( --enable-lib${i} )
		done
	else
		myconf+=( --disable-encoders )
	fi

	# libavdevice options
	use cdio && myconf+=( --enable-libcdio )
	use ieee1394 && myconf+=( --enable-libdc1394 )
	use pulseaudio && myconf+=( --enable-libpulse )

	# Indevs
	# v4l1 is gone since linux-headers-2.6.38
	myconf+=( --disable-indev=v4l )
	use v4l || myconf+=( --disable-indev=v4l2 )
	for i in alsa oss jack; do
		use ${i} || myconf+=( --disable-indev=${i} )
	done
	use X && myconf+=( --enable-x11grab )
	# Outdevs
	for i in alsa oss ; do
		use ${i} || myconf+=( --disable-outdev=${i} )
	done
	# libavfilter options
	multilib_is_native_abi && use frei0r && myconf+=( --enable-frei0r )
	use truetype &&  myconf+=( --enable-libfreetype )

	# Threads; we only support pthread for now
	use threads && myconf+=( --enable-pthreads )

	# Decoders
	use amr && myconf+=( --enable-libopencore-amrwb --enable-libopencore-amrnb )
	uses="gsm opus rtmp schroedinger speex vpx"
	for i in ${uses}; do
		use ${i} && myconf+=( --enable-lib${i} )
	done
	use jpeg2k && myconf+=( --enable-libopenjpeg )

	# CPU features
	for i in ${CPU_FEATURES}; do
		use ${i%:*} || myconf+=( --disable-${i#*:} )
	done

	# pass the right -mfpu as extra
	use neon && myconf+=( --extra-cflags=-mfpu=neon )

	# disable mmx accelerated code if PIC is required
	# as the provided asm decidedly is not PIC for x86.
	if use pic && [[ ${ABI} == x86 ]] ; then
		myconf+=( --disable-mmx --disable-mmxext )
	fi

	# Option to force building pic
	use pic && myconf+=( --enable-pic )

	# cross compile support
	if tc-is-cross-compiler ; then
		myconf+=( --enable-cross-compile --arch=$(tc-arch-kernel) --cross-prefix=${CHOST}- )
		case ${CHOST} in
			*freebsd*)
				myconf+=( --target-os=freebsd )
				;;
			mingw32*)
				myconf+=( --target-os=mingw32 )
				;;
			*linux*)
				myconf+=( --target-os=linux )
				;;
		esac
	fi

	# Misc stuff
	use hardcoded-tables && myconf+=( --enable-hardcoded-tables )

	# Specific workarounds for too-few-registers arch...
	if [[ ${ABI} == x86 ]]; then
		local CFLAGS=${CFLAGS} CXXFLAGS=${CXXFLAGS}
		filter-flags -fforce-addr -momit-leaf-frame-pointer
		append-flags -fomit-frame-pointer
		is-flag -O? || append-flags -O2
		if use debug; then
			# no need to warn about debug if not using debug flag
			ewarn ""
			ewarn "Debug information will be almost useless as the frame pointer is omitted."
			ewarn "This makes debugging harder, so crashes that has no fixed behavior are"
			ewarn "difficult to fix. Please have that in mind."
			ewarn ""
		fi
	fi

	set -- "${S}"/configure \
		--prefix="${EPREFIX}"/usr \
		--libdir="${EPREFIX}"/usr/$(get_libdir) \
		--shlibdir="${EPREFIX}"/usr/$(get_libdir) \
		--mandir="${EPREFIX}"/usr/share/man \
		--enable-shared \
		--cc="$(tc-getCC)" \
		--ar="$(tc-getAR)" \
		--optflags="${CFLAGS}" \
		--extra-cflags="${CFLAGS}" \
		$(use_enable static-libs static) \
		"${myconf[@]}"
	echo "${@}"
	"${@}" || die
}

multilib_src_compile() {
	emake

	if multilib_is_native_abi && use tools; then
		tc-export CC

		emake ${TOOLS[@]/#/tools/}
	fi
}

multilib_src_install() {
	emake DESTDIR="${D}" install install-man

	use doc && dodoc doc/*.html

	if multilib_is_native_abi && use tools; then
		dobin ${TOOLS[@]/#/tools/}
	fi
}

multilib_src_install_all() {
	dodoc Changelog README INSTALL
	dodoc doc/*.txt
}

multilib_src_test() {
	echo ${WORKDIR}/fate
	LD_LIBRARY_PATH="${BUILD_DIR}/libswscale:${BUILD_DIR}/libavcodec:${BUILD_DIR}/libavdevice:${BUILD_DIR}/libavfilter:${BUILD_DIR}/libavformat:${BUILD_DIR}/libavresample:${BUILD_DIR}/libavutil" \
		emake -j1 fate SAMPLES="${WORKDIR}/fate"
}