# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=5

inherit linux-mod

DESCRIPTION="Desktop Video - drivers and tools for products by Blackmagic Design including DeckLink and Intensity"
HOMEPAGE="http://www.blackmagicdesign.com/"

SRC_URI="Blackmagic_Desktop_Video_Linux_${PV}.tar.gz"
UNPACKED_DIR="desktopvideo-9.8a2-x86_64"

#LICENSE="BlackmagicDesktopVideo"
SLOT="0"
KEYWORDS="~amd64"
IUSE="autostart"
RESTRICT="fetch"

DEPEND=""
RDEPEND="${DEPEND}"

# supress QA warnings about stripping etc., i.e. stuff we cannot change since we install prebuilt binaries
QA_PREBUILT="opt/blackmagic-desktop-video/usr/bin/* opt/blackmagic-desktop-video/usr/lib/*"

# for kernel module compilation
MODULE_NAMES="blackmagic(misc:${S}/usr/src/desktopvideo-9.8a2:${S}/usr/src/desktopvideo-9.8a2)"
BUILD_TARGETS="clean all"

pkg_nofetch() {
	einfo "Please visit ${HOMEPAGE} and download \"Desktop Video ${PV} for Linux\""
	einfo "for your product from the support section and move it to ${DISTDIR}"
	einfo ""
	einfo "  expected filename: ${SRC_URI}"
	einfo ""
	einfo "The license should be shown and has to be accepted before the download"
	einfo "starts."
}

src_unpack() {
	unpack ${A}
	
	cd ${WORKDIR}
	tar xfz desktopvideo-${PV}-x86_64.tar.gz
	
	# symlink to what is supposed to have been prepared
	ln -s ${UNPACKED_DIR} ${P}
}

src_prepare() {
	epatch "${FILESDIR}/9-8-strict-prototypes.patch"
}

src_compile() {
	# library/tools are binary but kernel module requires compilation
	linux-mod_src_compile
}

src_install() {
	# all pre-built binaries should go into /opt and be symlinked to usr/bin etc.
	installdir="${D}/opt/blackmagic-desktop-video"
	
	mkdir -p ${installdir}
	cp -a ${WORKDIR}/${UNPACKED_DIR}/* ${installdir}/
	
	symlinks=(
			'usr/bin/BlackmagicControlPanel'
			'usr/bin/BlackmagicFirmwareUpdater'
			'usr/lib/libDeckLinkAPI.so'
			'usr/lib/libDeckLinkPreviewAPI.so'
			'usr/lib/blackmagic'
			'usr/share/applications/BlackmagicControlPanel.desktop'
			'usr/share/doc/desktopvideo'
			'usr/share/icons/hicolor/16x16/apps/BlackmagicControlPanel.png'
			'usr/share/icons/hicolor/32x32/apps/BlackmagicControlPanel.png'
			'usr/share/icons/hicolor/48x48/apps/BlackmagicControlPanel.png'
			'usr/share/icons/hicolor/128x128/apps/BlackmagicControlPanel.png'
			'usr/share/icons/hicolor/256x256/apps/BlackmagicControlPanel.png'
                 )
	
	for path in "${symlinks[@]}"; do
		dosym /opt/blackmagic-desktop-video/${path} ${path}
	done
	
	# udev rule should be placed in /lib/udev/rules.d instead
	dosym /opt/blackmagic-desktop-video/etc/udev/rules.d/20-blackmagic.rules /lib/udev/rules.d/20-blackmagic.rules
	
	# add firmware check to autostart?
	if use autostart; then
		dosym /opt/blackmagic-desktop-video/etc/xdg/autostart/blackmagic-firmware-notify.desktop /etc/xdg/autostart/blackmagic-firmware-notify.desktop
	fi
	
	# kernel module
	linux-mod_src_install
}

pkg_postinst() {
	# kernel module
	linux-mod_pkg_postinst
	
	#      12345678901234567890123456789012345678901234567890123456789012345678901234567890
	einfo ""
	einfo "Please do *NOT* report any QA errors to Gentoo or Blackmagic!"
	einfo ""
	einfo "The kernel module is simply called blackmagic. You may want to modprobe it now"
	einfo "to see if it works (it should print your devices to kernel log)."
	einfo ""
	einfo "Installed tools are BlackmagicFirmwareUpdater and BlackmagicControlPanel."
	einfo ""
	if use autostart; then
		einfo "Automated update check has been installed."
	else
		einfo "Automated update check has *not* been installed this time. (set USE flag"
		einfo "autostart if you want that)"
	fi
	einfo ""
	einfo "If your product is not being recognized, you may need to increase the vmalloc"
	einfo "limit in your kernel. You can do that by adding e.g. vmalloc=256M to your kernel"
	einfo "boot line. You can see current usage by running"
	einfo ""
	einfo " # grep VmallocUsed /proc/meminfo"
	einfo ""
	einfo "We are reloading udev rules now..."
	/bin/udevadm control --reload-rules || einfo " ... failed, you may want to check this before rebooting!"
}

pkg_postrm() {
	# kernel module
	linux-mod_pkg_postrm
}