# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit cmake

DESCRIPTION="waifu2x converter using ncnn and vulkan"
HOMEPAGE="https://github.com/nihui/waifu2x-ncnn-vulkan"
SRC_URI="https://github.com/nihui/waifu2x-ncnn-vulkan/archive/${PV}.tar.gz -> ${P}.tar.gz"

LICENSE="MIT"
SLOT="0"
KEYWORDS="~amd64 ~x86"

# Pin dev-libs/ncnn near bundled copy until more stable.
RDEPEND="
	~dev-libs/ncnn-20210525[vulkan]
	dev-util/glslang
	media-libs/libwebp:=
	media-libs/vulkan-loader"
DEPEND="
	${RDEPEND}
	dev-util/vulkan-headers"

src_prepare() {
	CMAKE_USE_DIR="${S}/src"
	cmake_src_prepare

	# Update all paths to match installation for models.
	sed "/PATHSTR\|model path/s|models-|${EPREFIX}/usr/share/${PN}/models-|" \
		-i src/main.cpp || die
}

src_configure() {
	local mycmakeargs=(
		-DGLSLANG_TARGET_DIR="${ESYSROOT}"/usr/$(get_libdir)/cmake
		-DUSE_SYSTEM_NCNN=ON
		-DUSE_SYSTEM_WEBP=ON
	)

	cmake_src_configure
}

src_install() {
	dobin "${BUILD_DIR}"/waifu2x-ncnn-vulkan

	insinto /usr/share/${PN}
	doins -r models/.

	einstalldocs
}