summaryrefslogtreecommitdiff
blob: aa54d05fdb85c47745b8b6b277ff965a26718c7f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: gstreamer-meson.eclass
# @MAINTAINER:
# gstreamer@gentoo.org
# @AUTHOR:
# Haelwenn (lanodan) Monnier <contact@hacktivis.me>
# Michał Górny <mgorny@gentoo.org>
# Gilles Dartiguelongue <eva@gentoo.org>
# Saleem Abdulrasool <compnerd@gentoo.org>
# foser <foser@gentoo.org>
# zaheerm <zaheerm@gentoo.org>
# Steven Newbury
# @SUPPORTED_EAPIS: 7
# @PROVIDES: meson multilib-minimal
# @BLURB: Helps building core & split gstreamer plugins
# @DESCRIPTION:
# Eclass to make external gst-plugins emergable on a per-plugin basis
# and to solve the problem with gst-plugins generating far too much
# unneeded dependencies.
#
# GStreamer consuming applications should depend on the specific plugins
# they need as defined in their source code. Usually you can find that
# out by grepping the source tree for 'factory_make'. If it uses playbin
# plugin, consider adding media-plugins/gst-plugins-meta dependency, but
# also list any packages that provide explicitly requested plugins.

# multilib-minimal goes last
inherit meson multilib toolchain-funcs virtualx xdg-utils multilib-minimal

case "${EAPI:-0}" in
	7)
		;;
	*)
		die "EAPI=\"${EAPI}\" is not supported"
		;;
esac

# @ECLASS_VARIABLE: GST_PLUGINS_ENABLED
# @DESCRIPTION:
# Defines the plugins to be built.
# May be set by an ebuild and contain more than one identifier, space
# separated (only src_configure can handle mutiple plugins at this time).

# @ECLASS_VARIABLE: GST_PLUGINS_NOAUTO
# @DESCRIPTION:
# Space-separated list defined by the ebuild for plugin options which shouldn't
# be automatically defined by gstreamer_multilib_src_configure.

# @FUNCTION: gstreamer_get_default_enabled_plugins
# @INTERNAL
# @DESCRIPTION:
# Get the list of plugins to be built by default, meaning the ones with no
# external dependencies for base packages and the name of the package for
# split ones.
gstreamer_get_default_enabled_plugins() {
	if [[ "${GST_ORG_MODULE}" == "${PN}" ]]; then
		gstreamer_get_plugins
		echo "${GST_PLUGINS_NO_EXT_DEPS}" | tr '\n' ' '
	else
		echo "${PN/gst-plugins-/}"
	fi
}

# @FUNCTION: gstreamer_get_plugins
# @INTERNAL
# @DESCRIPTION:
# Get the list of all plugins, with and without external dependencies.
# Must be called from src_prepare/src_configure
gstreamer_get_plugins() {
	GST_PLUGINS_NO_EXT_DEPS=$(sed -rn \
		"/^# Feature options for plugins with(out| no) external deps$/,/^#.*$/s;^option\('([^']*)'.*;\1;p" \
		"${S}/meson_options.txt" || die "Failed to extract options for plugins without external deps"
	)

	GST_PLUGINS_EXT_DEPS=$(sed -rn \
		"/^# Feature options for plugins (with|that need) external deps$/,/^#.*$/s;^option\('([^']*)'.*;\1;p" \
		"${S}/meson_options.txt" || die "Failed to extract options for plugins with external deps"
	)

	# opencv and hls in gst-plugins-bad are split, can't be properly detected
	if grep -q "option('opencv'" "${EMESON_SOURCE}"/meson_options.txt ; then
		GST_PLUGINS_EXT_DEPS="${GST_PLUGINS_EXT_DEPS}
opencv"
	fi
	if grep -q "option('hls'" "${EMESON_SOURCE}"/meson_options.txt ; then
		GST_PLUGINS_EXT_DEPS="${GST_PLUGINS_EXT_DEPS}
hls"
	fi
}

# @FUNCTION: gstreamer_system_package
# @USAGE: <gstaudio_dep:gstreamer-audio> [...]
# @DESCRIPTION:
# Walks through meson.build in order to make sure build will link against system
# libraries.
# Takes a list of path fragments and corresponding pkgconfig libraries
# separated by colon (:). Will replace the path fragment by the output of
# pkgconfig.
gstreamer_system_package() {
	local pdir directory libs pkgconfig pc tuple plugin_dir
	pkgconfig=$(tc-getPKG_CONFIG)

	for plugin_dir in ${GST_PLUGINS_BUILD_DIR} ; do
		pdir=$(gstreamer_get_plugin_dir ${plugin_dir})

		for tuple in $@ ; do
			dependency=${tuple%:*}
			pc=${tuple#*:}-${SLOT}
			sed -e "1i${dependency} = dependency('${pc}', required : true)" \
				-i "${pdir}"/meson.build || die
		done
	done
}

# @FUNCTION: gstreamer_system_library
# @USAGE: <gstbasecamerabin_dep:libgstbasecamerabinsrc> [...]
# @DESCRIPTION:
# Walks through meson.build in order to make sure build will link against system
# libraries.
# Takes a list of path fragments and corresponding pkgconfig libraries
# separated by colon (:). Will replace the path fragment by the output of
# pkgconfig.
gstreamer_system_library() {
	local pdir directory libs pkgconfig pc tuple plugin_dir
	pkgconfig=$(tc-getPKG_CONFIG)

	for plugin_dir in ${GST_PLUGINS_BUILD_DIR} ; do
		pdir=$(gstreamer_get_plugin_dir ${plugin_dir})

		for tuple in $@ ; do
			dependency=${tuple%:*}
			pc=${tuple#*:}-${SLOT}
			sed -e "1i${dependency} = cc.find_library('${pc}', required : true)" \
				-i "${pdir}"/meson.build || die
		done
	done
}

# @ECLASS_VARIABLE: GST_PLUGINS_BUILD_DIR
# @DESCRIPTION:
# Actual build directories of the plugins.
# Most often the same as the configure switch name.
# FIXME: Change into a bash array
: ${GST_PLUGINS_BUILD_DIR:=${PN/gst-plugins-/}}

# @ECLASS_VARIABLE: GST_TARBALL_SUFFIX
# @DESCRIPTION:
# Most projects hosted on gstreamer.freedesktop.org mirrors provide
# tarballs as tar.bz2 or tar.xz. This eclass defaults to xz. This is
# because the gstreamer mirrors are moving to only have xz tarballs for
# new releases.
: ${GST_TARBALL_SUFFIX:="xz"}

# Even though xz-utils are in @system, they must still be added to BDEPEND; see
# https://archives.gentoo.org/gentoo-dev/msg_a0d4833eb314d1be5d5802a3b710e0a4.xml
if [[ ${GST_TARBALL_SUFFIX} == "xz" ]]; then
	BDEPEND="${BDEPEND} app-arch/xz-utils"
fi

# @ECLASS_VARIABLE: GST_ORG_MODULE
# @DESCRIPTION:
# Name of the module as hosted on gstreamer.freedesktop.org mirrors.
# Leave unset if package name matches module name.
: ${GST_ORG_MODULE:=${PN}}

# @ECLASS_VARIABLE: GST_ORG_PVP
# @INTERNAL
# @DESCRIPTION:
# Major and minor numbers of the version number.
: ${GST_ORG_PVP:=$(ver_cut 1-2)}


DESCRIPTION="${BUILD_GST_PLUGINS} plugin for gstreamer"
HOMEPAGE="https://gstreamer.freedesktop.org/"
SRC_URI="https://gstreamer.freedesktop.org/src/${GST_ORG_MODULE}/${GST_ORG_MODULE}-${PV}.tar.${GST_TARBALL_SUFFIX}"
S="${WORKDIR}/${GST_ORG_MODULE}-${PV}"

LICENSE="GPL-2"
SLOT="1.0"

RDEPEND="
	>=dev-libs/glib-2.40.0:2[${MULTILIB_USEDEP}]
"
BDEPEND="
	virtual/pkgconfig
	virtual/perl-JSON-PP
"

if [[ "${PN}" != "gstreamer" ]]; then
	RDEPEND="
		${RDEPEND}
		>=media-libs/gstreamer-$(ver_cut 1-2):${SLOT}[${MULTILIB_USEDEP}]
	"
fi

# Export common multilib phases.
multilib_src_configure() { gstreamer_multilib_src_configure; }
multilib_src_compile() { gstreamer_multilib_src_compile; }
multilib_src_install() { gstreamer_multilib_src_install; }

if [[ "${PN}" != "${GST_ORG_MODULE}" ]]; then
	# Do not run test phase for individual plugin ebuilds.
	RESTRICT="test"
	RDEPEND="${RDEPEND}
		>=media-libs/${GST_ORG_MODULE}-${PV}:${SLOT}[${MULTILIB_USEDEP}]"

	# Export multilib phases used for split builds.
	multilib_src_install_all() { gstreamer_multilib_src_install_all; }
else
	local extra_deps=""

	IUSE="nls test"
	RESTRICT="!test? ( test )"
	if [[ "${PN}" != "gstreamer" ]]; then
		BDEPEND="${BDEPEND}
			nls? ( >=sys-devel/gettext-0.17 )
			test? ( media-libs/gstreamer[test] )
		"
	else
		BDEPEND="${BDEPEND}
			nls? ( >=sys-devel/gettext-0.17 )
		"
	fi

	multilib_src_test() { gstreamer_multilib_src_test; }
fi

DEPEND="${DEPEND} ${RDEPEND}"

# @FUNCTION: gstreamer_get_plugin_dir
# @USAGE: gstreamer_get_plugin_dir [<build_dir>]
# @INTERNAL
# @DESCRIPTION:
# Finds plugin build directory and output it.
# Defaults to ${GST_PLUGINS_BUILD_DIR} if argument is not provided
gstreamer_get_plugin_dir() {
	local build_dir=${1:-${GST_PLUGINS_BUILD_DIR}}

	if [[ ! -d ${S}/ext/${build_dir} ]]; then
		if [[ ! -d ${S}/sys/${build_dir} ]]; then
			ewarn "No such plugin directory"
			die
		fi
		einfo "Got system plugin in ${build_dir}..." >&2
		echo sys/${build_dir}
	else
		einfo "Got external plugin in ${build_dir}..." >&2
		echo ext/${build_dir}
	fi
}

# @VARIABLE: GST_PLUGINS_ENOAUTO
# @INTERNAL
# @DESCRIPTION:
# Contains false-positives.
# - gst-plugins-bad puts "shm" in external deps
GST_PLUGINS_ENOAUTO="shm"

# @FUNCTION: gstreamer_multilib_src_configure
# @DESCRIPTION:
# Handles logic common to configuring gstreamer plugins
gstreamer_multilib_src_configure() {
	local plugin gst_conf=( ) EMESON_SOURCE=${EMESON_SOURCE:-${S}}

	gstreamer_get_plugins
	xdg_environment_reset

	GST_PLUGINS_ENABLED=${GST_PLUGINS_ENABLED:-$(gstreamer_get_default_enabled_plugins)}

	for plugin in ${GST_PLUGINS_NO_EXT_DEPS} ${GST_PLUGINS_EXT_DEPS} ; do
		if has ${plugin} ${GST_PLUGINS_NOAUTO} ${GST_PLUGINS_ENOAUTO}; then
			: # noop
		elif has ${plugin} ${GST_PLUGINS_ENABLED} ; then
			gst_conf+=( -D${plugin}=enabled )
		else
			gst_conf+=( -D${plugin}=disabled )
		fi
	done

	if grep -q "option('orc'" "${EMESON_SOURCE}"/meson_options.txt ; then
		if in_iuse orc ; then
			gst_conf+=( -Dorc=$(usex orc enabled disabled) )
		else
			gst_conf+=( -Dorc=disabled )
			eqawarn "QA: IUSE=orc is missing while plugin supports it"
		fi
	else
		if in_iuse orc ; then
			eqawarn "QA: IUSE=orc is present while plugin does not support it"
		fi
	fi

	if grep -q "option('introspection'" "${EMESON_SOURCE}"/meson_options.txt ; then
		if in_iuse introspection ; then
			gst_conf+=( -Dintrospection=$(multilib_native_usex introspection enabled disabled) )
		else
			gst_conf+=( -Dintrospection=disabled )
			eqawarn "QA: IUSE=introspection is missing while plugin supports it"
		fi
	else
		if in_iuse introspection ; then
			eqawarn "QA: IUSE=introspection is present while plugin does not support it"
		fi
	fi

	if grep -q "option('maintainer-mode'" "${EMESON_SOURCE}"/meson_options.txt ; then
		gst_conf+=( -Dmaintainer-mode=disabled )
	fi

	if grep -q "option('schemas-compile'" "${EMESON_SOURCE}"/meson_options.txt ; then
		gst_conf+=( -Dschemas-compile=disabled )
	fi

	if grep -q "option('examples'" "${EMESON_SOURCE}"/meson_options.txt ; then
		gst_conf+=( -Dexamples=disabled )
	fi

	if [[ ${PN} == ${GST_ORG_MODULE} ]]; then
		if grep -q "option('nls'" "${EMESON_SOURCE}"/meson_options.txt ; then
			gst_conf+=( $(meson_feature nls) )
		fi

		if grep -q "option('tests'" "${EMESON_SOURCE}"/meson_options.txt ; then
			gst_conf+=( $(meson_feature test tests) )
		fi
	fi

	if grep -qF "option('package-name'" "${EMESON_SOURCE}"/meson_options.txt ; then
		gst_conf+=( -Dpackage-name="Gentoo GStreamer ebuild" )
	fi
	if grep -qF "option('package-origin'" "${EMESON_SOURCE}"/meson_options.txt ; then
		gst_conf+=( -Dpackage-origin="https://www.gentoo.org" )
	fi
	gst_conf+=( "${@}" )

	einfo "Configuring to build ${GST_PLUGINS_ENABLED} plugin(s) ..."
	meson_src_configure "${gst_conf[@]}"
}


# @FUNCTION: _gstreamer_get_target_filename
# @INTERNAL
# @DESCRIPTION:
# Looks for first argument being present as a substring in install targets
# Got ported from python to perl for greater language-stability
_gstreamer_get_target_filename() {
	cat >"${WORKDIR}/_gstreamer_get_target_filename.pl" <<"EOF"
#!/usr/bin/env perl
use strict;
use utf8;
use JSON::PP;

open(my $targets_file, '<:encoding(UTF-8)', 'meson-info/intro-targets.json') || die $!;
my $data = decode_json <$targets_file>;
close($targets_file) || die $!;

if(!$ARGV[0]) {
	die "Requires a target as argument";
}

foreach my $target (@{$data}) {
	if($target->{'installed'}
		and (index($target->{'filename'}[0], $ARGV[0]) != -1)
	) {
		printf "%s:%s\n", $target->{'filename'}[0], $target->{'install_filename'}[0];
	}
}
EOF

	chmod +x "${WORKDIR}/_gstreamer_get_target_filename.pl" || die

	perl "${WORKDIR}/_gstreamer_get_target_filename.pl" $@ \
		|| die "Failed to extract target filenames from meson-info"
}

# @FUNCTION: gstreamer_multilib_src_compile
# @DESCRIPTION:
# Compiles requested gstreamer plugin.
gstreamer_multilib_src_compile() {
	if [[ "${PN}" == "${GST_ORG_MODULE}" ]]; then
		eninja
	else
		local plugin_dir plugin build_dir

		for plugin_dir in ${GST_PLUGINS_BUILD_DIR} ; do
			plugin=$(_gstreamer_get_target_filename $(gstreamer_get_plugin_dir ${plugin_dir}))
			# Read full link of build directory. Outputs symlink's true link.
			# We want to get the full file path so it can be removed later.
			# Working around ninja issues w/ symlinks (e.g. PORTAGE_TMPDIR as a symlink)

			# https://github.com/ninja-build/ninja/issues/1251
			# https://github.com/ninja-build/ninja/issues/1330
			build_dir=$(readlink -f "${BUILD_DIR}")

			plugin_path="${plugin%%:*}"
			eninja "${plugin_path/"${build_dir}/"/}"
		done
	fi
}

# @FUNCTION: gstreamer_multilib_src_test
# @DESCRIPTION:
# Tests the gstreamer plugin (non-split)
gstreamer_multilib_src_test() {
	GST_GL_WINDOW=x11 virtx eninja test
}

# @FUNCTION: gstreamer_multilib_src_install
# @DESCRIPTION:
# Installs requested gstreamer plugin.
gstreamer_multilib_src_install() {
	if [[ "${PN}" == "${GST_ORG_MODULE}" ]]; then
		DESTDIR="${D}" eninja install
	else
		local plugin_dir plugin

		for plugin_dir in ${GST_PLUGINS_BUILD_DIR} ; do
			for plugin in $(_gstreamer_get_target_filename $(gstreamer_get_plugin_dir ${plugin_dir})); do
				local install_filename="${plugin##*:}"
				install_filename="${install_filename#${EPREFIX}}"
				insinto "${install_filename%/*}"
				doins "${plugin%%:*}"
			done
		done
	fi
}

# @FUNCTION: gstreamer_multilib_src_install_all
# @DESCRIPTION:
# Installs documentation for requested gstreamer plugin
gstreamer_multilib_src_install_all() {
	local plugin_dir

	for plugin_dir in ${GST_PLUGINS_BUILD_DIR} ; do
		local dir=$(gstreamer_get_plugin_dir ${plugin_dir})
		[[ -e ${dir}/README ]] && dodoc "${dir}"/README
	done
}