[meta-multimedia] pjproject: Add recipe

diff --git a/meta-multimedia/recipes-multimedia/pjproject/pjproject_2.17.bb b/meta-multimedia/recipes-multimedia/pjproject/pjproject_2.17.bb
new file mode 100644
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+++ b/meta-multimedia/recipes-multimedia/pjproject/pjproject_2.17.bb
@@ -0,0 +1,118 @@ 
+SUMMARY = "Open source SIP and media stack, plus pjsua2 Python bindings"
+DESCRIPTION = "PJSIP is a free and open source multimedia communication library \
+written in C with high level API in C, C++, Java, C#, and Python languages. It \
+implements standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. \
+It combines signaling protocol (SIP) with rich multimedia framework and NAT \
+traversal functionality into high level API that is portable and suitable for \
+almost any type of systems ranging from desktops, embedded systems, to mobile \
+handsets."
+HOMEPAGE = "https://www.pjsip.org/"
+SECTION = "libs"
+
+LICENSE = "GPL-2.0-or-later"
+LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263"
+
+SRC_URI = "git://github.com/pjsip/pjproject.git;protocol=https;branch=master;tag=${PV}"
+SRCREV = "5a457451fa2712ba18e12b01738e8ff3af2b26fd"
+
+DEPENDS = "swig-native python3-setuptools-native"
+
+inherit pkgconfig python3native python3targetconfig
+
+# Not autotools: ./configure is a one-line wrapper round pjproject's own
+# aconfigure, which may or may not be autotools... there appears to be no
+# documentation.
+B = "${S}"
+
+EXTRA_OECONF = "${PACKAGECONFIG_CONFARGS} ${@ '' if d.getVar('DISABLE_STATIC') == '' else '--enable-shared' }"
+
+do_configure() {
+	./configure --host=${HOST_SYS} --prefix=${prefix} --libdir=${libdir} --includedir=${includedir} \
+		${EXTRA_OECONF}
+}
+
+# ssl and sound are the only features enabled by default - everything video-
+# related cascades off of --disable-video (aconfigure.ac turns off sdl,
+# ffmpeg, v4l2, openh264 and vpx together whenever video itself is off).
+PACKAGECONFIG ?= "ssl ${@bb.utils.filter('DISTRO_FEATURES', 'alsa', d)}"
+
+# --with-X=DIR options (ssl, sdl, openh264, vpx) fall back to disabled when
+# cross-compiling unless a prefix is explicitly given, so their "on" arg
+# always needs an explicit STAGING_DIR_HOST path, not just a bare
+# --enable-X/--with-X.
+PACKAGECONFIG[alsa] = "--enable-sound,--disable-sound,alsa-lib"
+PACKAGECONFIG[ffmpeg] = "--enable-ffmpeg,--disable-ffmpeg,ffmpeg"
+PACKAGECONFIG[libwebrtc] = "--enable-libwebrtc,--disable-libwebrtc"
+PACKAGECONFIG[openh264] = "--with-openh264=${STAGING_DIR_HOST}${prefix},--disable-openh264,openh264"
+PACKAGECONFIG[sdl] = "--with-sdl=${STAGING_DIR_HOST}${prefix},--disable-sdl,libsdl2"
+PACKAGECONFIG[ssl] = "--with-ssl=${STAGING_DIR_HOST}${prefix},--without-ssl,openssl"
+PACKAGECONFIG[v4l2] = "--enable-v4l2,--disable-v4l2,v4l-utils"
+PACKAGECONFIG[video] = "--enable-video,--disable-video"
+PACKAGECONFIG[vpx] = "--with-vpx=${STAGING_DIR_HOST}${prefix},--disable-vpx,libvpx"
+
+# pjproject's per-module rules.mak links some binaries and shared libs
+# (pjlib-test, libpj.so, etc.) directly via $(LD), not $(CC)/$(CXX).
+EXTRA_OEMAKE = "LD='${CXX}'"
+
+# Conservative: pjproject's per-module Makefiles don't always express
+# inter-file build ordering correctly for -j. Revisit if a parallel build
+# turns out to be reliable.
+PARALLEL_MAKE = ""
+
+do_compile:prepend() {
+	oe_runmake dep
+}
+
+PYSWIG_DIR = "${S}/pjsip-apps/src/swig/python"
+
+do_compile:append() {
+	# Reuse pjproject's own SWIG python Makefile (handles the swig
+	# codegen step with the right -I flags) rather than reimplementing
+	# it, just pointing PYTHON_EXE at the correctly cross-configured
+	# native python3 (python3native/python3targetconfig, above) instead
+	# of its own default bare "python3" off PATH.
+	cd ${PYSWIG_DIR}
+	oe_runmake PYTHON_EXE=${STAGING_BINDIR_NATIVE}/python3-native/python3
+	cd -
+}
+
+do_install() {
+	# pjproject's own "install:" target does DESTDIR-aware "cp -af
+	# $(APP_LIBXX_FILES) $(DESTDIR)$(libdir)/" etc for the C/C++ libraries,
+	# headers and libpjproject.pc - this is what autotools_do_install used
+	# to provide for free; now explicit since this isn't an autotools
+	# recipe.
+	oe_runmake 'DESTDIR=${D}' install
+
+	# -a preserves the *source* files' ownership (real host-user, since
+	# do_compile doesn't run under pseudo) instead of a fresh pseudo-
+	# tracked "create as root" event, which later trips up sstate
+	# signature computation ("uid not found", host contamination). Force
+	# every installed file through a real chown so pseudo re-registers
+	# correct ownership.
+	chown -R root:root ${D}
+
+	# Not "make install" (upstream's own install target here does
+	# "setup.py install --user", not DESTDIR-aware) - invoke setup.py
+	# directly, same pattern as setuptools3_legacy_do_install.
+	install -d ${D}${PYTHON_SITEPACKAGES_DIR}
+	cd ${PYSWIG_DIR}
+	STAGING_INCDIR=${STAGING_INCDIR} \
+	STAGING_LIBDIR=${STAGING_LIBDIR} \
+	PYTHONPATH=${D}${PYTHON_SITEPACKAGES_DIR}:$PYTHONPATH \
+	${STAGING_BINDIR_NATIVE}/python3-native/python3 setup.py \
+	install --skip-build --root=${D} --prefix=${prefix} --install-lib=${PYTHON_SITEPACKAGES_DIR}
+}
+
+PACKAGES =+ "python3-pjsua2"
+FILES:python3-pjsua2 = "\
+    ${PYTHON_SITEPACKAGES_DIR}/pjsua2* \
+    ${PYTHON_SITEPACKAGES_DIR}/_pjsua2* \
+    ${PYTHON_SITEPACKAGES_DIR}/__pycache__ \
+"
+RDEPENDS:python3-pjsua2 = "python3-core"
+
+# Static libs only: everything lands in ${PN}-dev (headers, libpjproject.pc)
+# and ${PN}-staticdev (the .a files) by bitbake's own default FILES
+# patterns - ${PN} itself ships nothing.
+ALLOW_EMPTY:${PN} = "1"