DESCRIPTION = "libGLES for ZynqMP with Mali 400"

LICENSE = "Proprietary"
LIC_FILES_CHKSUM = "file://EULA;md5=82e466d0ed92c5a15f568dbe6b31089c"

inherit features_check update-alternatives

ANY_OF_DISTRO_FEATURES = "x11 fbdev wayland"
REQUIRED_MACHINE_FEATURES = "mali400"

PROVIDES += "virtual/libgles1 virtual/libgles2 virtual/egl virtual/libgbm"

FILESEXTRAPATHS:prepend := "${THISDIR}/files:"

REPO ?= "git://github.com/Xilinx/mali-userspace-binaries.git;protocol=https"
BRANCH ?= "xlnx_rel_v2023.1"
SRCREV ?= "b3a772aad859cdadc8513b11c3e995546c20e75e"
BRANCHARG = "${@['nobranch=1', 'branch=${BRANCH}'][d.getVar('BRANCH', True) != '']}"

PV = "r9p0-01rel0"
SRC_URI = " \
    ${REPO};${BRANCHARG} \
    file://egl.pc \
    file://glesv1_cm.pc \
    file://glesv1.pc \
    file://glesv2.pc \
    file://gbm.pc \
    "

PACKAGE_ARCH = "${MACHINE_ARCH}"

S = "${WORKDIR}/git"

# If were switching at runtime, we would need all RDEPENDS needed for all backends available
X11RDEPENDS = "libxdamage libxext libx11 libdrm libxfixes"
X11DEPENDS = "libxdamage libxext virtual/libx11 libdrm libxfixes"

# Don't install runtime dependencies for other backends unless the DISTRO supports it
RDEPENDS:${PN} = " \
    kernel-module-mali \
    ${@bb.utils.contains('DISTRO_FEATURES', 'x11', '${X11RDEPENDS}', '', d)} \
"

# We dont build anything but we want to avoid QA warning build-deps
DEPENDS = "\
    ${@bb.utils.contains('DISTRO_FEATURES', 'x11', '${X11DEPENDS}', '', d)} \
    ${@bb.utils.contains('DISTRO_FEATURES', 'wayland', 'wayland libdrm', '', d)} \
"


# x11 is default, set to "fbdev" , "wayland", or "headless" if required
MALI_BACKEND_DEFAULT ?= "x11"

USE_X11 = "${@bb.utils.contains("DISTRO_FEATURES", "x11", "yes", "no", d)}"
USE_FB = "${@bb.utils.contains("DISTRO_FEATURES", "fbdev", "yes", "no", d)}"
USE_WL = "${@bb.utils.contains("DISTRO_FEATURES", "wayland", "yes", "no", d)}"

MONOLITHIC_LIBMALI = "libMali.so.9.0"

do_install() {
    #Identify the ARCH type
    ${TARGET_PREFIX}gcc --version > ARCH_PLATFORM
    if grep -q aarch64 "ARCH_PLATFORM"; then
	ARCH_PLATFORM_DIR=aarch64-linux-gnu
    else
	ARCH_PLATFORM_DIR=arm-linux-gnueabihf
    fi

    # install headers
    install -d -m 0655 ${D}${includedir}/EGL
    install -m 0644 ${S}/${PV}/glesHeaders/EGL/*.h ${D}${includedir}/EGL/
    install -d -m 0655 ${D}${includedir}/GLES
    install -m 0644 ${S}/${PV}/glesHeaders/GLES/*.h ${D}${includedir}/GLES/
    install -d -m 0655 ${D}${includedir}/GLES2
    install -m 0644 ${S}/${PV}/glesHeaders/GLES2/*.h ${D}${includedir}/GLES2/
    install -d -m 0655 ${D}${includedir}/KHR
    install -m 0644 ${S}/${PV}/glesHeaders/KHR/*.h ${D}${includedir}/KHR/

    install -d ${D}${libdir}/pkgconfig
    install -m 0644 ${WORKDIR}/egl.pc ${D}${libdir}/pkgconfig/egl.pc
    install -m 0644 ${WORKDIR}/glesv2.pc ${D}${libdir}/pkgconfig/glesv2.pc
    install -m 0644 ${WORKDIR}/glesv1.pc ${D}${libdir}/pkgconfig/glesv1.pc
    install -m 0644 ${WORKDIR}/glesv1_cm.pc ${D}${libdir}/pkgconfig/glesv1_cm.pc

    install -d ${D}${libdir}
    install -d ${D}${includedir}

    cp -a --no-preserve=ownership ${S}/${PV}/${ARCH_PLATFORM_DIR}/common/*.so* ${D}${libdir}

    install -Dm 0644 ${S}/${PV}/${ARCH_PLATFORM_DIR}/headless/${MONOLITHIC_LIBMALI} ${D}${libdir}/headless/${MONOLITHIC_LIBMALI}
    ln -snf headless/${MONOLITHIC_LIBMALI} ${D}${libdir}/${MONOLITHIC_LIBMALI}

    if [ "${USE_FB}" = "yes" ]; then
        install -Dm 0644 ${S}/${PV}/${ARCH_PLATFORM_DIR}/fbdev/${MONOLITHIC_LIBMALI} ${D}${libdir}/fbdev/${MONOLITHIC_LIBMALI}
        if [ "${MALI_BACKEND_DEFAULT}" = "fbdev" ]; then
            ln -snf fbdev/${MONOLITHIC_LIBMALI} ${D}${libdir}/${MONOLITHIC_LIBMALI}
        fi
    fi
    if [ "${USE_X11}" = "yes" ]; then
        install -Dm 0644 ${S}/${PV}/${ARCH_PLATFORM_DIR}/x11/${MONOLITHIC_LIBMALI} ${D}${libdir}/x11/${MONOLITHIC_LIBMALI}
        if [ "${MALI_BACKEND_DEFAULT}" = "x11" ]; then
            ln -snf x11/${MONOLITHIC_LIBMALI} ${D}${libdir}/${MONOLITHIC_LIBMALI}
        fi
    else
        # We cant rely on the fact that all apps will use pkgconfig correctly
        sed -i -e 's/^#if defined(MESA_EGL_NO_X11_HEADERS)$/#if (1)/' ${D}${includedir}/EGL/eglplatform.h
    fi
    if [ "${USE_WL}" = "yes" ]; then
        install -m 0644 ${S}/${PV}/glesHeaders/GBM/gbm.h ${D}${includedir}/
        install -m 0644 ${WORKDIR}/gbm.pc ${D}${libdir}/pkgconfig/gbm.pc
        install -Dm 0644 ${S}/${PV}/${ARCH_PLATFORM_DIR}/wayland/${MONOLITHIC_LIBMALI} ${D}${libdir}/wayland/${MONOLITHIC_LIBMALI}
        if [ "${MALI_BACKEND_DEFAULT}" = "wayland" ]; then
            ln -snf wayland/${MONOLITHIC_LIBMALI} ${D}${libdir}/${MONOLITHIC_LIBMALI}
        fi
    fi
}


# We need separate packages to provide multiple alternatives, at this point we install
# everything on the default one but that can be split if necessary
PACKAGES += "${@bb.utils.contains("DISTRO_FEATURES", "x11", "${PN}-x11", "", d)}"
PACKAGES += "${@bb.utils.contains("DISTRO_FEATURES", "fbdev", "${PN}-fbdev", "", d)}"
PACKAGES += "${@bb.utils.contains("DISTRO_FEATURES", "wayland", "${PN}-wayland", "", d)}"
PACKAGES += "${PN}-headless"

# This is default/common for all alternatives
ALTERNATIVE_LINK_NAME[libmali-xlnx] = "${libdir}/${MONOLITHIC_LIBMALI}"


# Declare alternatives and corresponding library location
ALTERNATIVE:${PN}-x11 = "libmali-xlnx"
ALTERNATIVE_TARGET_libmali-xlnx-x11[libmali-xlnx] = "${libdir}/x11/${MONOLITHIC_LIBMALI}"

ALTERNATIVE:${PN}-fbdev = "libmali-xlnx"
ALTERNATIVE_TARGET_libmali-xlnx-fbdev[libmali-xlnx] = "${libdir}/fbdev/${MONOLITHIC_LIBMALI}"

ALTERNATIVE:${PN}-wayland = "libmali-xlnx"
ALTERNATIVE_TARGET_libmali-xlnx-wayland[libmali-xlnx] = "${libdir}/wayland/${MONOLITHIC_LIBMALI}"

ALTERNATIVE:${PN}-headless = "libmali-xlnx"
ALTERNATIVE_TARGET_libmali-xlnx-headless[libmali-xlnx] = "${libdir}/headless/${MONOLITHIC_LIBMALI}"

# Set priorities according to what we prveiously defined
ALTERNATIVE_PRIORITY_libmali-xlnx-x11[libmali-xlnx] = "${@bb.utils.contains("MALI_BACKEND_DEFAULT", "x11", "20", "10", d)}"
ALTERNATIVE_PRIORITY_libmali-xlnx-fbdev[libmali-xlnx] = "${@bb.utils.contains("MALI_BACKEND_DEFAULT", "fbdev", "20", "10", d)}"
ALTERNATIVE_PRIORITY_libmali-xlnx-wayland[libmali-xlnx] = "${@bb.utils.contains("MALI_BACKEND_DEFAULT", "wayland", "20", "10", d)}"

# If misconfigured, fallback to headless
ALTERNATIVE_PRIORITY_libmali-xlnx-headless[libmali-xlnx] = "${@bb.utils.contains("MALI_BACKEND_DEFAULT", "headless", "20", "15", d)}"


# Package gets renamed on the debian class, but we want to keep -xlnx
DEBIAN_NOAUTONAME:libmali-xlnx = "1"

# Update alternatives will actually have separate postinst scripts (one for each package)
# This wont work for us, so we create a common postinst script and we pass that as the general
# libmali-xlnx postinst script, but we defer execution to run on first boot (pkg_postinst_ontarget).
# This will avoid ldconfig removing the symbolic links when creating the root filesystem.
python populate_packages_updatealternatives:append () {
    # We need to remove the 'fake' libmali-xlnx before creating any links
    libdir = d.getVar('libdir')
    common_postinst = "#!/bin/sh\nrm " + libdir + "/${MONOLITHIC_LIBMALI}\n"
    for pkg in (d.getVar('PACKAGES') or "").split():
        # Not all packages provide an alternative (e.g. ${PN}-lic)
        postinst = d.getVar('pkg_postinst:%s' % pkg)
        if postinst:
            old_postinst = postinst
            new_postinst = postinst.replace('#!/bin/sh','')
            common_postinst += new_postinst
    d.setVar('pkg_postinst_ontarget:%s' % 'libmali-xlnx', common_postinst)
}


# Inhibit warnings about files being stripped
INHIBIT_PACKAGE_DEBUG_SPLIT = "1"
INHIBIT_PACKAGE_STRIP = "1"
INHIBIT_SYSROOT_STRIP = "1"

RREPLACES:${PN} = "libegl libgles1 libglesv1-cm1 libgles2 libglesv2-2 libgbm"
RPROVIDES:${PN} = "libegl libgles1 libglesv1-cm1 libgles2 libglesv2-2 libgbm"
RCONFLICTS:${PN} = "libegl libgles1 libglesv1-cm1 libgles2 libglesv2-2 libgbm"

# These libraries shouldn't get installed in world builds unless something
# explicitly depends upon them.
EXCLUDE_FROM_WORLD = "1"
FILES:${PN} += "${libdir}/*"

do_package:append() {

    shlibswork_dir = d.getVar('SHLIBSWORKDIR')
    pkg_filename = d.getVar('PN') + ".list"
    shlibs_file = os.path.join(shlibswork_dir, pkg_filename)
    lines = ""
    with open(shlibs_file, "r") as f:
        lines = f.readlines()
    with open(shlibs_file, "w") as f:
        for line in lines:
            if d.getVar('MALI_BACKEND_DEFAULT') in line.strip("\n"):
                 f.write(line)
}