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Sebastian Dröge 0ee18781f9 gst: Add GstIdStr for holding structure names and field names 
This is an efficient string storage for short strings without heap allocations,
and falling back to the heap for bigger allocations. Almost all structure fields
and structure names in use nowadays are short enough to not require a heap
allocation.

As structure names and fields are sometimes dynamically created, storing them in
a GQuark can create a memory leak and potentially a DoS attack by continously
triggering creating of new quarks.

Thanks to Tim for coming up with the name!

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7432>
2024-09-26 19:21:29 +03:00

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gst_sources = files(
'gst.c',
'gstobject.c',
'gstallocator.c',
'gstbin.c',
'gstbuffer.c',
'gstbufferlist.c',
'gstbufferpool.c',
'gstbus.c',
'gstcaps.c',
'gstcapsfeatures.c',
'gstchildproxy.c',
'gstclock.c',
'gstcontext.c',
'gstcontrolbinding.c',
'gstcontrolsource.c',
'gstdatetime.c',
'gstdebugutils.c',
'gstdevice.c',
'gstdeviceprovider.c',
'gstdeviceproviderfactory.c',
'gstdynamictypefactory.c',
'gstelement.c',
'gstelementfactory.c',
'gsterror.c',
'gstevent.c',
'gstformat.c',
'gstghostpad.c',
'gstdevicemonitor.c',
'gstidstr.c',
'gstinfo.c',
'gstiterator.c',
'gstatomicqueue.c',
'gstmessage.c',
'gstmeta.c',
'gstmemory.c',
'gstminiobject.c',
'gstpad.c',
'gstpadtemplate.c',
'gstparamspecs.c',
'gstpipeline.c',
'gstplugin.c',
'gstpluginfeature.c',
'gstpoll.c',
'gstpreset.c',
'gstprotection.c',
'gstquark.c',
'gstquery.c',
'gstregistry.c',
'gstregistrychunks.c',
'gstpromise.c',
'gstsample.c',
'gstsegment.c',
'gststreamcollection.c',
'gststreams.c',
'gststructure.c',
'gstsystemclock.c',
'gsttaglist.c',
'gsttagsetter.c',
'gsttask.c',
'gsttaskpool.c',
'gsttoc.c',
'gsttocsetter.c',
'gsttracer.c',
'gsttracerfactory.c',
'gsttracerrecord.c',
'gsttracerutils.c',
'gsttypefind.c',
'gsttypefindfactory.c',
'gsturi.c',
'gstutils.c',
'gstvalue.c',
'gstvecdeque.c',
'gstparse.c',
)
gst_headers = files(
'gst.h',
'glib-compat.h',
'gstobject.h',
'gstallocator.h',
'gstbin.h',
'gstbuffer.h',
'gstbufferlist.h',
'gstbufferpool.h',
'gstbus.h',
'gstbytearrayinterface.h',
'gstcaps.h',
'gstcapsfeatures.h',
'gstchildproxy.h',
'gstclock.h',
'gstcompat.h',
'gstcontext.h',
'gstcontrolbinding.h',
'gstcontrolsource.h',
'gstdatetime.h',
'gstdebugutils.h',
'gstelement.h',
'gstelementmetadata.h',
'gstdevice.h',
'gstdeviceprovider.h',
'gstdeviceproviderfactory.h',
'gstdynamictypefactory.h',
'gstelementfactory.h',
'gsterror.h',
'gstevent.h',
'gstformat.h',
'gstghostpad.h',
'gstdevicemonitor.h',
'gstidstr.h',
'gstinfo.h',
'gstiterator.h',
'gstatomicqueue.h',
'gstmacros.h',
'gstmessage.h',
'gstmeta.h',
'gstmemory.h',
'gstminiobject.h',
'gstpad.h',
'gstpadtemplate.h',
'gstparamspecs.h',
'gstpipeline.h',
'gstplugin.h',
'gstpluginfeature.h',
'gstpoll.h',
'gstpreset.h',
'gstprotection.h',
'gstquery.h',
'gstpromise.h',
'gstsample.h',
'gstsegment.h',
'gststreamcollection.h',
'gststreams.h',
'gststructure.h',
'gstsystemclock.h',
'gsttaglist.h',
'gsttagsetter.h',
'gsttask.h',
'gsttaskpool.h',
'gsttoc.h',
'gsttocsetter.h',
'gsttracer.h',
'gsttracerfactory.h',
'gsttracerrecord.h',
'gsttypefind.h',
'gsttypefindfactory.h',
'gsturi.h',
'gstutils.h',
'gstvalue.h',
'gstvecdeque.h',
'gstregistry.h',
'gstparse.h',
'math-compat.h',
)
if host_system == 'darwin'
gst_headers += 'gstmacos.h'
gst_sources += 'gstmacos.m'
endif
install_headers(gst_headers, subdir : 'gstreamer-1.0/gst')
if host_system == 'windows'
gst_sources += files('gstpluginloader-win32.c')
else
gst_sources += files('gstpluginloader.c')
endif
extra_deps = []
if host_system == 'android'
gst_sources += 'gstandroid.c'
extra_deps += cc.find_library('log')
endif
if host_system == 'darwin'
extra_deps += dependency('appleframeworks', modules : ['Cocoa'])
endif
gst_registry = get_option('registry')
if gst_registry
gst_registry_sources = files('gstregistrybinary.c')
else
gst_registry_sources = []
endif
# Make copy so configure_file consumes the copy and we can
# still add to the original cdata later.
gst_cdata = cdata
if gst_debug
gst_cdata.set('GST_DISABLE_GST_DEBUG_DEFINE', '#undef GST_DISABLE_GST_DEBUG')
else
gst_cdata.set('GST_DISABLE_GST_DEBUG_DEFINE', '#define GST_DISABLE_GST_DEBUG 1')
endif
if gst_registry
gst_cdata.set('GST_DISABLE_REGISTRY_DEFINE', '#undef GST_DISABLE_REGISTRY')
else
gst_cdata.set('GST_DISABLE_REGISTRY_DEFINE', '#define GST_DISABLE_REGISTRY 1')
endif
gst_parse = get_option('gst_parse')
if gst_parse
gst_cdata.set('GST_DISABLE_PARSE_DEFINE', '#undef GST_DISABLE_PARSE')
else
gst_cdata.set('GST_DISABLE_PARSE_DEFINE', '#define GST_DISABLE_PARSE 1')
endif
gst_cdata.set10('GST_DISABLE_CAST_CHECKS_DEFINE', disable_cast_checks)
gst_cdata.set10('GST_DISABLE_GLIB_ASSERTS_DEFINE', disable_glib_asserts)
gst_cdata.set10('GST_DISABLE_GLIB_CHECKS_DEFINE', disable_glib_checks)
# FIXME: add --disable-plugin option?
gst_cdata.set('GST_DISABLE_PLUGIN_DEFINE', '#undef GST_DISABLE_PLUGIN')
configure_file(input : 'gstconfig.h.in',
output : 'gstconfig.h',
install_dir : join_paths(get_option('includedir'), 'gstreamer-1.0/gst'),
configuration : gst_cdata)
version_cdata = configuration_data()
version_cdata.set('GST_VERSION_MAJOR', gst_version_major)
version_cdata.set('GST_VERSION_MINOR', gst_version_minor)
version_cdata.set('GST_VERSION_MICRO', gst_version_micro)
version_cdata.set('GST_VERSION_NANO', gst_version_nano)
gst_version_h = configure_file(input : 'gstversion.h.in',
output : 'gstversion.h',
install_dir : join_paths(get_option('includedir'), 'gstreamer-1.0/gst'),
configuration : version_cdata)
gst_enums = gnome.mkenums_simple('gstenumtypes',
sources : gst_headers,
header_prefix : '#include <gst/gstconfig.h>',
body_prefix : '#include "gst/gst_private.h"\n#include <gst/gst.h>',
decorator : 'GST_API',
install_header : true,
install_dir : join_paths(get_option('includedir'), 'gstreamer-1.0/gst'))
gstenum_h = gst_enums[1]
gstenum_c = gst_enums[0]
gst_parse_sources = []
if gst_parse
subdir('parse')
endif
subdir('printf')
libgst_c_args = gst_c_args + [
'-D_GNU_SOURCE',
'-DG_LOG_DOMAIN="GStreamer"',
'-DGST_DISABLE_DEPRECATED',
]
tracer_hooks = get_option('tracer_hooks')
if not tracer_hooks
libgst_c_args += ['-DGST_DISABLE_GST_TRACER_HOOKS']
endif
if get_option('gstreamer-static-full')
libgst_c_args += ['-DGST_FULL_STATIC_COMPILATION']
endif
# Make sure that subproject building gir files work
gst_incdirs = [configinc]
gst_gen_sources = [gstenum_h]
libgst = library('gstreamer-1.0', gst_sources,
gstenum_h, gstenum_c, gst_parse_sources, gst_registry_sources,
version : libversion,
soversion : soversion,
darwin_versions : osxversion,
c_args : libgst_c_args + ['-DBUILDING_GST'],
include_directories : [configinc,
# HACK, change include paths in .y and .l in final version.
include_directories('parse')],
link_with : printf_lib,
install : true,
dependencies : [gobject_dep, gmodule_dep, glib_dep, mathlib, dl_dep,
backtrace_deps, platform_deps, network_deps, extra_deps],
)
gst_compile_args = []
if static_build
gst_compile_args += ['-DGST_STATIC_COMPILATION']
endif
pkg_name = 'gstreamer-1.0'
library_def = {'lib': libgst}
pkgconfig.generate(libgst,
libraries : [glib_dep, gobject_dep] + pkgconfig_libs,
variables : pkgconfig_variables,
uninstalled_variables: pkgconfig_uninstalled_variables,
subdirs : pkgconfig_subdirs,
name : pkg_name,
description : 'Streaming media framework',
extra_cflags: gst_compile_args,
)
if build_gir
gst_gir_extra_args = gir_init_section + ['--c-include=gst/gst.h']
if meson.is_subproject()
# FIXME: There must be a better way to do this
# Need to pass the include path to find gst/gst.h and gst/gstenumtypes.h (built)
gst_gir_extra_args += ['--cflags-begin',
'-I' + meson.current_source_dir() + '/..',
'-I' + meson.current_build_dir() + '/..',
'-DGST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS',
'--cflags-end']
endif
gst_incdirs += [configinc]
gir = {
'sources' : gst_sources + gst_headers + gst_enums + [gst_version_h],
'namespace' : 'Gst',
'nsversion' : apiversion,
'identifier_prefix' : 'Gst',
'symbol_prefix' : 'gst',
'export_packages' : pkg_name,
'includes' : ['GLib-2.0', 'GObject-2.0', 'GModule-2.0' ],
'install' : true,
'extra_args' : gst_gir_extra_args,
}
library_def += {'gir': [gir]}
# When building statically the information about the gir is going to be
# consumed by `gst-build` to generate gir files linked against
# `libgstreamer-full-1.0.so`. We do not build it here as it is currently
# broken. Once that is fixed we could build it here, even though we would keep
# creating another gir which links against gst-full.
if not static_build
gst_gir = gnome.generate_gir(libgst, kwargs: gir)
library_def += {'gir_targets': library_def.get('gir_targets', []) + [gst_gir]}
gst_gen_sources += gst_gir
endif
endif
gst_libraries += [[pkg_name, library_def]]
gst_dep = declare_dependency(link_with : libgst,
compile_args : gst_compile_args,
include_directories : gst_incdirs,
dependencies : [glib_dep, gobject_dep, gmodule_dep],
# Everything that uses libgst needs this built to compile
sources : gst_gen_sources,
)
meson.override_dependency(pkg_name, gst_dep)
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