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# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
PYTHON_COMPAT=( python3_{8..10} )
inherit gstreamer-meson python-any-r1
MY_PN="gstreamer-vaapi"
DESCRIPTION="Hardware accelerated video decoding through VA-API plugin for GStreamer"
HOMEPAGE="https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi"
SRC_URI="https://gstreamer.freedesktop.org/src/${MY_PN}/${MY_PN}-${PV}.tar.xz"
LICENSE="LGPL-2.1+"
SLOT="1.0"
KEYWORDS="amd64 arm64 ppc64 ~riscv x86"
IUSE="+drm +egl gles2 +opengl wayland +X" # Keep default enabled IUSE in sync with gst-plugins-base and libva
# gst-vaapi configure is based around GL platform mainly, unlike gst-plugins-bad that goes by GL API mainly; for less surprises,
# we design gst-vaapi ebuild in terms of GL API as main choice as well, meaning that USE opengl and/or gles2 is required to
# enable opengl support at all and choices get chained from there.
# One or multiple video output are required: drm, x11, glx, egl and/or wayland;
# but GL API is our main trigger, thus USE=egl should be ineffective if neither gles2 or opengl is enabled;
# So "|| ( drm egl opengl wayland X )" would be wrong, because egl isn't built with USE="egl -opengl -gles2", ending up with no video outputs.
# As we ensure at least one working GL output with other REQUIRED_USE, we can put gles2/opengl in REQUIRED_USE instead of egl, solving the issue.
# gles2 API only supported windowing system (on linux) is EGL, so require it
# opengl API only supported windowing systems (on linux) are EGL and GLX, so require one of them (glx is enabled with USE="opengl X")
REQUIRED_USE="
|| ( drm gles2 opengl wayland X )
gles2? ( egl )
opengl? ( || ( egl X ) )
"
# glx doesn't require libva-glx (libva[opengl]) afaics, only by tests/test-display.c
# USE flag behavior:
# 'drm' enables vaapi drm support
# 'egl' enables EGL platform support (but only if also 'opengl||gles2')
# - 'egl' is exposed as a USE flag mainly to get EGL support instead of or in addition to GLX support with desktop GL while keeping it optional for pure GLX cases;
# it's always required with USE=gles2, thus USE="gles2 opengl X" will require and build desktop GL EGL platform support as well on top of GLX, which doesn't add extra deps at that point.
# 'gles2' enables GLESv2 or GLESv3 based GL API support
# 'opengl' enables desktop OpenGL based GL API support
# 'wayland' enables non-GL Wayland support; wayland EGL support when combined with 'egl' (but only if also 'opengl||gles2')
# 'X' enables non-GL X support; GLX support when combined with 'opengl'
# gst-plugins-bad still needed for codecparsers (GL libraries moved to -base); checked for 1.14 (recheck for 1.16)
GST_REQ="${PV}"
GL_DEPS="
>=media-libs/gst-plugins-base-${GST_REQ}:${SLOT}[egl?,gles2?,opengl?,wayland?,X?]
media-libs/mesa[gles2?,egl(+)?,X?,${MULTILIB_USEDEP}]
"
RDEPEND="
>=dev-libs/glib-2.40:2[${MULTILIB_USEDEP}]
>=media-libs/gst-plugins-base-${GST_REQ}:${SLOT}[${MULTILIB_USEDEP}]
>=media-libs/gst-plugins-bad-${GST_REQ}:${SLOT}[${MULTILIB_USEDEP}]
>=x11-libs/libva-1.4.0:=[drm(+)?,wayland?,X?,${MULTILIB_USEDEP}]
drm? (
>=virtual/libudev-208:=[${MULTILIB_USEDEP}]
>=x11-libs/libdrm-2.4.46[${MULTILIB_USEDEP}]
)
gles2? ( ${GL_DEPS} )
opengl? ( ${GL_DEPS} )
wayland? ( >=dev-libs/wayland-1.11.0[${MULTILIB_USEDEP}] )
X? (
>=x11-libs/libX11-1.6.2[${MULTILIB_USEDEP}]
>=x11-libs/libXrandr-1.4.2[${MULTILIB_USEDEP}]
x11-libs/libXrender[${MULTILIB_USEDEP}] )
"
DEPEND="${RDEPEND}
>=dev-util/gtk-doc-am-1.12
"
BDEPEND="${PYTHON_DEPS}"
S="${WORKDIR}/${MY_PN}-${PV}"
# FIXME: "Failed to create vaapipostproc element"
RESTRICT="test"
multilib_src_configure() {
local emesonargs=(
-Dwith_encoders=yes
-Dwith_drm=$(usex drm yes no)
-Dwith_x11=$(usex X yes no)
-Dwith_wayland=$(usex wayland yes no)
)
if use opengl || use gles2; then
emesonargs+=( -Dwith_egl=$(usex egl yes no) )
else
emesonargs+=( -Dwith_egl=no )
fi
if use opengl && use X; then
emesonargs+=( -Dwith_glx=yes )
else
emesonargs+=( -Dwith_glx=no )
fi
# Workaround EGL/eglplatform.h being built with X11 present
use X || export CFLAGS="${CFLAGS} -DEGL_NO_X11"
gstreamer_multilib_src_configure
}
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