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<p>First we should discuss the leftover TODOs I think. Since these
may not be trivial issues, it would be better to take a look at
them and then decide on a case-by-case basis whether to fix them
now or later.<br>
</p>
<p>For convenience, I copy-paste these bits from an older RFC email:</p>
<p><br>
</p>
<p>========<br>
<br>
Noteworthy changes:
<br>
<br>
- A lot of autotools/M4 related patches are just gone. Well,
obviously <span class="moz-smiley-s1" title=":)"></span> But it
is surprising just how much fewer patches there are now.
<br>
<br>
- gstreamer1.0-libav no longer builds its own FFmpeg copy. This
was done in the past because there were no stable versioned FFmpeg
releases. They do exist now, so in meson based builds, gst-libav
just builds the actual plugin code, meaning that the build time is
much shorter, most of the recipe code (and all of the patches) are
gone (because they were FFmpeg specific), and the libgstlibav.so
binary in /usr/lib/gstreamer-1.0/ is much smaller. This also means
that FFmpeg specials do not have to be added both to the FFmpeg
and to the gstreamer1.0-libav recipe anymore.
<br>
<br>
- gstreamer1.0-plugins.inc was replaced by
gstreamer1.0-plugins-common.inc, and gst-plugins-package.inc by
gstreamer1.0-plugins-packaging.inc . These names are clearer.
gst-plugins-package.inc in particular was named that way because
it used to be shared between GStreamer 0.10 and 1.0 recipes. Since
the former are gone by now, there's no point in keeping that name.
<br>
<br>
- gstreamer1.0 ptest is now done differently. Originally, make was
installed on the target and the Makefile was run by the run-ptest
script. Now, gstreamer is patched to allow for installable tests
that are accompanied by individual shell scripts that set up the
necessary environment variables, along with .test files so that
the gnome-desktop-testing test runner can be used in run-ptest to
run the unit tests. This also makes it possible to inherit from
ptest-gnome in the gstreamer1.0 recipe. The patch against
gstreamer is necessary because by default, one runs the test by
executing "meson test". I don't think installing meson along with
all of the necessary meson.build scripts is a practical approach.
<br>
<br>
- OpenGL packageconfigs now work quite differently in
gstreamer1.0-plugins-base, since the meson options distinguish
between OpenGL APIs, platforms, and windowing systems.
<br>
<br>
- zlib in gstreamer1.0-plugins-base and -good is now required. I
don't think this is a big deal, since it is also a dependency of
GLib itself, so zlib has to be present on the rootfs anyway.
<br>
<br>
<br>
There are some TODOs left that I want to bring up here for
discussion:
<br>
<br>
- The aforementioned PTest approach needs some review. Also,
initially, I thought I'd have to add PTest support to several
GStreamer recipes, which is why I isolated the ptest code in
gstreamer1.0-ptest.inc . But it turned out that only the
gstreamer1.0 recipe needs it. I am unsure if I should just merge
that .inc into that recipe, since there's no reason why the tests
from other recipes shouldn't be "ptest-ified" in the future. And
then that .inc would be useful to have. (Tests from the plugin
sets may be partially tough to run, since some of them create X11
windows etc.)
<br>
<br>
- The code in gstreamer1.0-ptest.inc sets up run-ptest in a rather
uncommon way, since that file has to be autogenerated.
<br>
<br>
- gstreamer1.0_1.16.1.bb and gstreamer1.0-plugins-common.inc both
contain a "gettext_oemeson" function to set up meson NLS options.
Ideally, this functionality would be part of the gettext bbclass
itself. However, my bitbake/OE knowledge does not suffice to do
that, since with meson, you want to be able to configure what the
enable/disable flags should be ("enabled"/"disabled",
"true"/"false" etc.); that's why for example the gtk-doc bbclass
defines GTKDOC_MESON_OPTION, GTKDOC_MESON_ENABLE_FLAG,
GTKDOC_MESON_DISABLE_FLAG. I am not sure how to combine such
variables with this kind of custom python code, and still allow
for customized values in other recipes. In other words, if I first
get a "NLS_MESON_DISABLE_FLAG" value with getValue() in a modified
gettext_oemeson function, then I might not get the value I expect,
since it will get the initial value (the one set with ?=), not
necessarily the one that is redefined by a recipe.
<br>
<br>
- The OpenGL packageconfigs are handled by a
get_opengl_cmdline_list function in
gstreamer1.0-plugins-base_1.16.1.bb . I did this so that a
comma-separated list can be generated out of the packageconfigs
that are (a) part of PACKAGECONFIG and (b) part of the newly added
OPENGL_APIS/OPENGL_PLATFORMS/OPENGL_WINSYS lists. I do not know if
there's a better approach for this. The intent is that other
layers (most notably BSP layers) can add custom packageconfig
names to these lists. One example would be OPENGL_WINSYS +=
"viv-fb" in meta-freescale. Another would be OPENGL_WINSYS +=
"dispmanx" in meta-raspberrypi.
<br>
<br>
- gstreamer1.0-python_1.16.1.bb currently has a problem in that
the gst-python code tries to load /usr/lib/libpython3.7m.so. But,
in a regular installation, only /usr/lib/libpython3.7m.so.1.0
would be availale. It is possible to adjust the libpython path
& name during the build. But - what would it be adjusted to?
How would the recipe know that "/usr/lib/libpython3.7m.so.1.0" is
the correct choice? Or perhaps would it make sense to add the
/usr/lib/libpython3.7m.so symlink to the regular (as in: non-dev)
Python package?
</p>
<p>========<br>
</p>
<p><br>
</p>
<p><br>
</p>
On 18.12.19 22:14, Alexander Kanavin wrote:<br>
<blockquote type="cite"
cite="mid:CANNYZj9LUKtJ9JcnyuAktOsco7_4euTVwHz2P5hrpk8Pcj8EBA@mail.gmail.com">
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<div dir="ltr">
<div>Thanks :) Will there be a more refined version, or should
these be merged already, with followup fixing as needed?</div>
<div><br>
</div>
<div>Alex<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun, 15 Dec 2019 at 13:55,
Carlos Rafael Giani <<a href="mailto:crg7475@mailbox.org"
moz-do-not-send="true">crg7475@mailbox.org</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">*
gstreamer1.0-plugins-common.inc<br>
The old gstreamer1.0-plugins.inc file, adapted for meson<br>
* gstreamer1.0-plugins-packaging.inc<br>
The old gst-plugins-package.inc file, adapted for meson<br>
* gstreamer1.0-ptest.inc<br>
Common code for meson based PTest support; autogenerates the
run-ptest<br>
file and is designed to use the gnome-desktop-testing suite
runner<br>
(which is why the .inc files inherits from ptest-gnome)<br>
<br>
Signed-off-by: Carlos Rafael Giani <<a
href="mailto:crg7475@mailbox.org" target="_blank"
moz-do-not-send="true">crg7475@mailbox.org</a>><br>
---<br>
.../gstreamer/gstreamer1.0-plugins-common.inc | 47
+++++++++++++<br>
.../gstreamer1.0-plugins-packaging.inc | 70
+++++++++++++++++++<br>
.../gstreamer/gstreamer1.0-ptest.inc | 21 ++++++<br>
3 files changed, 138 insertions(+)<br>
create mode 100644
meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-common.inc<br>
create mode 100644
meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-packaging.inc<br>
create mode 100644
meta/recipes-multimedia/gstreamer/gstreamer1.0-ptest.inc<br>
<br>
diff --git
a/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-common.inc
b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-common.inc<br>
new file mode 100644<br>
index 0000000000..ccf55500a9<br>
--- /dev/null<br>
+++
b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-common.inc<br>
@@ -0,0 +1,47 @@<br>
+# This .inc file contains the common setup for the
gstreamer1.0-plugins-*<br>
+# plugin set recipes.<br>
+<br>
+# SUMMARY is set in the actual .bb recipes<br>
+HOMEPAGE = "<a href="https://gstreamer.freedesktop.org/"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://gstreamer.freedesktop.org/</a>"<br>
+BUGTRACKER = "<a
href="https://bugzilla.gnome.org/enter_bug.cgi?product=Gstreamer"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://bugzilla.gnome.org/enter_bug.cgi?product=Gstreamer</a>"<br>
+SECTION = "multimedia"<br>
+<br>
+DEPENDS = "gstreamer1.0 glib-2.0-native"<br>
+<br>
+inherit gettext meson pkgconfig upstream-version-is-even<br>
+<br>
+require gstreamer1.0-plugins-packaging.inc<br>
+<br>
+# Orc enables runtime JIT compilation of data processing
routines from Orc<br>
+# bytecode to SIMD instructions for various architectures
(currently SSE, MMX,<br>
+# MIPS, Altivec and NEON are supported).<br>
+# This value is used in the PACKAGECONFIG values for each
plugin set recipe.<br>
+# By modifying it, Orc can be enabled/disabled in all of
these recipes at once.<br>
+GSTREAMER_ORC ?= "orc"<br>
+<br>
+PACKAGECONFIG[orc] = "-Dorc=enabled,-Dorc=disabled,orc
orc-native"<br>
+<br>
+# TODO: put this in a gettext.bbclass patch (with variables
to allow for<br>
+# configuring the option name and the enabled/disabled
values).<br>
+def gettext_oemeson(d):<br>
+ if d.getVar('USE_NLS') == 'no':<br>
+ return '-Dnls=disabled'<br>
+ # Remove the NLS bits if USE_NLS is no or
INHIBIT_DEFAULT_DEPS is set<br>
+ if d.getVar('INHIBIT_DEFAULT_DEPS') and not
oe.utils.inherits(d, 'cross-canadian'):<br>
+ return '-Dnls=disabled'<br>
+ return '-Dnls=enabled'<br>
+<br>
+# Not all plugin sets contain examples, so the -Dexamples<br>
+# option needs to be added conditionally.<br>
+GST_PLUGIN_SET_HAS_EXAMPLES ?= "1"<br>
+<br>
+EXTRA_OEMESON += " \<br>
+ ${@bb.utils.contains('GST_PLUGIN_SET_HAS_EXAMPLES', '1',
'-Dexamples=disabled', '', d)} \<br>
+ ${@gettext_oemeson(d)} \<br>
+"<br>
+<br>
+GIR_MESON_ENABLE_FLAG = "enabled"<br>
+GIR_MESON_DISABLE_FLAG = "disabled"<br>
+<br>
+# Dynamically generate packages for all enabled plugins<br>
+PACKAGES_DYNAMIC = "^${PN}-.*"<br>
diff --git
a/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-packaging.inc
b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-packaging.inc<br>
new file mode 100644<br>
index 0000000000..9a7a1b6afe<br>
--- /dev/null<br>
+++
b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-packaging.inc<br>
@@ -0,0 +1,70 @@<br>
+# This .inc file contains functionality for automatically
splitting<br>
+# built plugins into individual packages for each plugin. A
-meta<br>
+# package is also set up that has no files of its own, but
contains<br>
+# the names of all plugin packages in its RDEPENDS list.<br>
+#<br>
+# This is mainly used by the gstreamer1.0-plugins-* plugin
set recipes,<br>
+# but can be used in any recipe that produces GStreamer
plugins.<br>
+<br>
+PACKAGESPLITFUNCS_prepend = " split_gstreamer10_packages "<br>
+PACKAGESPLITFUNCS_append = " set_gstreamer10_metapkg_rdepends
"<br>
+<br>
+python split_gstreamer10_packages () {<br>
+ gst_libdir = d.expand('${libdir}/gstreamer-1.0')<br>
+ postinst = d.getVar('plugin_postinst')<br>
+ glibdir = d.getVar('libdir')<br>
+<br>
+ # GStreamer libraries<br>
+ do_split_packages(d, glibdir, r'^lib(.*)\.so\.*',
'lib%s', 'GStreamer 1.0 %s library', extra_depends='',
allow_links=True)<br>
+ # GStreamer plugin shared objects<br>
+ do_split_packages(d, gst_libdir, r'libgst(.*)\.so$',
d.expand('${PN}-%s'), 'GStreamer 1.0 plugin for %s',
postinst=postinst, extra_depends='')<br>
+ # GObject introspection files for GStreamer plugins<br>
+ do_split_packages(d, glibdir+'/girepository-1.0',
r'Gst(.*)-1.0\.typelib$', d.expand('${PN}-%s-typelib'),
'GStreamer 1.0 typelib file for %s', postinst=postinst,
extra_depends='')<br>
+ # Static GStreamer libraries for development<br>
+ do_split_packages(d, gst_libdir, r'libgst(.*)\.a$',
d.expand('${PN}-%s-staticdev'), 'GStreamer 1.0 plugin for %s
(static development files)', extra_depends='${PN}-staticdev')<br>
+}<br>
+<br>
+python set_gstreamer10_metapkg_rdepends () {<br>
+ import os<br>
+ import oe.utils<br>
+<br>
+ # Go through all generated packages (excluding the main
package and<br>
+ # the -meta package itself) and add them to the -meta
package as RDEPENDS.<br>
+<br>
+ pn = d.getVar('PN')<br>
+ metapkg = pn + '-meta'<br>
+ d.setVar('ALLOW_EMPTY_' + metapkg, "1")<br>
+ d.setVar('FILES_' + metapkg, "")<br>
+ blacklist = [ pn, pn + '-meta' ]<br>
+ metapkg_rdepends = []<br>
+ pkgdest = d.getVar('PKGDEST')<br>
+ for pkg in oe.utils.packages_filter_out_system(d):<br>
+ if pkg not in blacklist and pkg not in
metapkg_rdepends:<br>
+ # See if the package is empty by looking at the
contents of its PKGDEST subdirectory.<br>
+ # If this subdirectory is empty, then the package
is.<br>
+ # Empty packages do not get added to the meta
package's RDEPENDS<br>
+ pkgdir = os.path.join(pkgdest, pkg)<br>
+ if os.path.exists(pkgdir):<br>
+ dir_contents = os.listdir(pkgdir) or []<br>
+ else:<br>
+ dir_contents = []<br>
+ is_empty = len(dir_contents) == 0<br>
+ if not is_empty:<br>
+ metapkg_rdepends.append(pkg)<br>
+ d.setVar('RDEPENDS_' + metapkg, '
'.join(metapkg_rdepends))<br>
+ d.setVar('DESCRIPTION_' + metapkg, pn + ' meta package')<br>
+}<br>
+<br>
+# each plugin-dev depends on PN-dev, plugin-staticdev on
PN-staticdev<br>
+# so we need them even when empty (like in gst-plugins-good
case)<br>
+ALLOW_EMPTY_${PN} = "1"<br>
+ALLOW_EMPTY_${PN}-dev = "1"<br>
+ALLOW_EMPTY_${PN}-staticdev = "1"<br>
+<br>
+PACKAGES += "${PN}-apps ${PN}-meta ${PN}-glib"<br>
+<br>
+FILES_${PN} = ""<br>
+FILES_${PN}-apps = "${bindir}"<br>
+FILES_${PN}-glib = "${datadir}/glib-2.0"<br>
+<br>
+RRECOMMENDS_${PN} += "${PN}-meta"<br>
diff --git
a/meta/recipes-multimedia/gstreamer/gstreamer1.0-ptest.inc
b/meta/recipes-multimedia/gstreamer/gstreamer1.0-ptest.inc<br>
new file mode 100644<br>
index 0000000000..74368c4cd8<br>
--- /dev/null<br>
+++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0-ptest.inc<br>
@@ -0,0 +1,21 @@<br>
+inherit ptest-gnome<br>
+<br>
+TEST_FILES_PATH =
"${datadir}/installed-tests/gstreamer-1.0/test-files"<br>
+RUN_PTEST_FILE = "${D}${PTEST_PATH}/run-ptest"<br>
+<br>
+EXTRA_OEMESON += "-Dtest-files-path=${TEST_FILES_PATH}"<br>
+<br>
+# Using do_install_ptest_base instead of do_install_ptest,
since<br>
+# the default do_install_ptest_base is hardcoded to expect
Makefiles.<br>
+do_install_ptest_base() {<br>
+ # Generate run-ptest file<br>
+ echo "#!/usr/bin/env sh" > "${RUN_PTEST_FILE}"<br>
+ echo "gnome-desktop-testing-runner
${GST_TEST_SUITE_NAME}" >> "${RUN_PTEST_FILE}"<br>
+ chmod 0755 "${RUN_PTEST_FILE}"<br>
+<br>
+ # Install additional files required by tests<br>
+ if [ -d "${S}/tests/files" ] ; then<br>
+ install -d "${D}/${TEST_FILES_PATH}"<br>
+ install -m 0644 "${S}/tests/files"/*
"${D}/${TEST_FILES_PATH}"<br>
+ fi<br>
+}<br>
-- <br>
2.17.1<br>
<br>
-- <br>
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</blockquote>
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