# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/media-video/ffmpeg/ffmpeg-9999.ebuild,v 1.56 2011/10/05 14:17:52 aballier Exp $

EAPI="4"

SCM=""
if [ "${PV#9999}" != "${PV}" ] ; then
	SCM="git-2"
	EGIT_REPO_URI="git://git.videolan.org/ffmpeg.git"
fi

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

DESCRIPTION="Complete solution to record, convert and stream audio and video. Includes libavcodec."
HOMEPAGE="http://ffmpeg.org/"
if [ "${PV#9999}" != "${PV}" ] ; then
	SRC_URI=""
elif [ "${PV%_p*}" != "${PV}" ] ; then # Snapshot
	SRC_URI="mirror://gentoo/${P}.tar.bz2"
else # Release
	SRC_URI="http://ffmpeg.org/releases/${P/_/-}.tar.bz2"
fi
FFMPEG_REVISION="${PV#*_p}"

LICENSE="GPL-2 amr? ( GPL-3 ) encode? ( aac? ( GPL-3 ) )"
SLOT="0"
if [ "${PV#9999}" = "${PV}" ] ; then
	KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~ppc ~ppc64 ~sparc ~x86 ~x86-fbsd"
fi
IUSE="
	aac aacplus alsa amr bindist +bzip2 cdio celt cpudetection debug dirac doc
	+encode faac frei0r gsm +hardcoded-tables ieee1394 jack jpeg2k modplug mp3
	network openal oss pic qt-faststart rtmp schroedinger sdl speex static-libs
	test theora threads truetype v4l v4l2 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="3dnow:amd3dnow 3dnowext:amd3dnowext altivec avx mmx mmxext:mmx2 ssse3 vis neon"

for i in ${CPU_FEATURES}; do
	IUSE="${IUSE} ${i%:*}"
done

RDEPEND="
	alsa? ( media-libs/alsa-lib )
	amr? ( media-libs/opencore-amr )
	bzip2? ( app-arch/bzip2 )
	cdio? ( dev-libs/libcdio )
	celt? ( >=media-libs/celt-0.11.1 )
	dirac? ( media-video/dirac )
	encode? (
		aac? ( media-libs/vo-aacenc )
		aacplus? ( media-libs/libaacplus )
		amr? ( media-libs/vo-amrwbenc )
		faac? ( media-libs/faac )
		mp3? ( >=media-sound/lame-3.98.3 )
		theora? ( >=media-libs/libtheora-1.1.1[encode] media-libs/libogg )
		vorbis? ( media-libs/libvorbis media-libs/libogg )
		x264? ( >=media-libs/x264-0.0.20110426 )
		xvid? ( >=media-libs/xvid-1.1.0 )
	)
	frei0r? ( media-plugins/frei0r-plugins )
	gsm? ( >=media-sound/gsm-1.0.12-r1 )
	ieee1394? ( media-libs/libdc1394 sys-libs/libraw1394 )
	jack? ( media-sound/jack-audio-connection-kit )
	jpeg2k? ( >=media-libs/openjpeg-1.3-r2 )
	modplug? ( media-libs/libmodplug )
	openal? ( >=media-libs/openal-1.1 )
	rtmp? ( >=media-video/rtmpdump-2.2f )
	sdl? ( >=media-libs/libsdl-1.2.13-r1[audio,video] )
	schroedinger? ( media-libs/schroedinger )
	speex? ( >=media-libs/speex-1.2_beta3 )
	truetype? ( media-libs/freetype:2 )
	vaapi? ( >=x11-libs/libva-0.32 )
	vdpau? ( x11-libs/libvdpau )
	vpx? ( >=media-libs/libvpx-0.9.6 )
	X? ( x11-libs/libX11 x11-libs/libXext )
	zlib? ( sys-libs/zlib )
	!media-video/qt-faststart
"

DEPEND="${RDEPEND}
	>=sys-devel/make-3.81
	dirac? ( dev-util/pkgconfig )
	doc? ( app-text/texi2html )
	ieee1394? ( dev-util/pkgconfig )
	mmx? ( dev-lang/yasm )
	rtmp? ( dev-util/pkgconfig )
	schroedinger? ( dev-util/pkgconfig )
	test? ( net-misc/wget )
	truetype? ( dev-util/pkgconfig )
	v4l? ( sys-kernel/linux-headers )
	v4l2? ( sys-kernel/linux-headers )
"
# faac is license-incompatible with ffmpeg
REQUIRED_USE="bindist? ( encode? ( !faac !aacplus ) )"

S=${WORKDIR}/${P/_/-}

src_prepare() {
	if [ "${PV%_p*}" != "${PV}" ] ; then # Snapshot
		export revision=git-N-${FFMPEG_REVISION}
	fi
}

src_configure() {
	local myconf="${EXTRA_FFMPEG_CONF}"
	# Set to --enable-version3 if (L)GPL-3 is required
	local version3=""

	# enabled by default
	for i in debug doc network vaapi vdpau zlib; do
		use ${i} || myconf="${myconf} --disable-${i}"
	done
	use bzip2 || myconf="${myconf} --disable-bzlib"
	use sdl || myconf="${myconf} --disable-ffplay"

	use cpudetection && myconf="${myconf} --enable-runtime-cpudetect"

	# Encoders
	if use encode
	then
		use mp3 && myconf="${myconf} --enable-libmp3lame"
		use aac && { myconf="${myconf} --enable-libvo-aacenc" ; version3=" --enable-version3" ; }
		use amr && { myconf="${myconf} --enable-libvo-amrwbenc" ; version3=" --enable-version3" ; }
		for i in theora vorbis x264 xvid; do
			use ${i} && myconf="${myconf} --enable-lib${i}"
		done
		use aacplus && myconf="${myconf} --enable-libaacplus --enable-nonfree"
		use faac && myconf="${myconf} --enable-libfaac --enable-nonfree"
	else
		myconf="${myconf} --disable-encoders"
	fi

	# libavdevice options
	use cdio && myconf="${myconf} --enable-libcdio"
	use ieee1394 && myconf="${myconf} --enable-libdc1394"
	use openal && myconf="${myconf} --enable-openal"
	# Indevs
	for i in v4l v4l2 alsa oss jack ; do
		use ${i} || myconf="${myconf} --disable-indev=${i}"
	done
	use X && myconf="${myconf} --enable-x11grab"
	# Outdevs
	for i in alsa oss ; do
		use ${i} || myconf="${myconf} --disable-outdev=${i}"
	done
	# libavfilter options
	use frei0r && myconf="${myconf} --enable-frei0r"
	use truetype && myconf="${myconf} --enable-libfreetype"

	# Threads; we only support pthread for now but ffmpeg supports more
	use threads && myconf="${myconf} --enable-pthreads"

	# Decoders
	use amr && { myconf="${myconf} --enable-libopencore-amrwb --enable-libopencore-amrnb" ; version3=" --enable-version3" ; }
	for i in celt gsm dirac modplug rtmp schroedinger speex vpx; do
		use ${i} && myconf="${myconf} --enable-lib${i}"
	done
	use jpeg2k && myconf="${myconf} --enable-libopenjpeg"

	# CPU features
	for i in ${CPU_FEATURES}; do
		use ${i%:*} || myconf="${myconf} --disable-${i#*:}"
	done
	# disable mmx accelerated code if PIC is required
	# as the provided asm decidedly is not PIC for x86.
	if use pic && use x86 ; then
		myconf="${myconf} --disable-mmx --disable-mmx2"
	fi

	# Option to force building pic
	use pic && myconf="${myconf} --enable-pic"

	# Try to get cpu type based on CFLAGS.
	# Bug #172723
	# We need to do this so that features of that CPU will be better used
	# If they contain an unknown CPU it will not hurt since ffmpeg's configure
	# will just ignore it.
	for i in $(get-flag march) $(get-flag mcpu) $(get-flag mtune) ; do
		[ "${i}" = "native" ] && i="host" # bug #273421
		myconf="${myconf} --cpu=${i}"
		break
	done

	# Mandatory configuration
	myconf="
		--enable-gpl
		${version3}
		--enable-postproc
		--enable-avfilter
		--disable-stripping
		${myconf}"

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

	# Misc stuff
	use hardcoded-tables && myconf="${myconf} --enable-hardcoded-tables"

	# Specific workarounds for too-few-registers arch...
	if [[ $(tc-arch) == "x86" ]]; then
		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

	cd "${S}"
	./configure \
		--prefix="${EPREFIX}/usr" \
		--libdir="${EPREFIX}/usr/$(get_libdir)" \
		--shlibdir="${EPREFIX}/usr/$(get_libdir)" \
		--mandir="${EPREFIX}/usr/share/man" \
		--enable-shared \
		--cc="$(tc-getCC)" \
		--disable-optimizations \
		$(use_enable static-libs static) \
		${myconf} || die
}

src_compile() {
	#252269
	emake version.h
	emake

	if use qt-faststart; then
		tc-export CC
		emake -C tools qt-faststart
	fi
}

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

	dodoc Changelog README INSTALL
	dodoc -r doc/*

	if use qt-faststart; then
		dobin tools/qt-faststart
	fi
}

src_test() {
	if use encode ; then
		LD_LIBRARY_PATH="${S}/libpostproc:${S}/libswscale:${S}/libavcodec:${S}/libavdevice:${S}/libavfilter:${S}/libavformat:${S}/libavutil" \
			emake test
	else
		ewarn "Tests fail without USE=encode, skipping"
	fi
}