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Commit 04893043 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] DocBook: Add rules to auto-generate some media docbook 



Auto-generate the videodev2.h.xml,frontend.h.xml and the indexes.

Some logic at the Makefile helps us to identify when a symbol is missing,
like for example:

Error: no ID for constraint linkend: V4L2-PIX-FMT-JPGL.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 02f8c6ae

Documentation/DocBook/Makefile

+258 −21
Original line number Diff line number Diff line
@@ -6,6 +6,8 @@ 
# To add a new book the only step required is to add the book to the

# list of DOCBOOKS.



TMPMEDIA=.tmpmedia



DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \

	    kernel-hacking.xml kernel-locking.xml deviceiobook.xml \

	    writing_usb_driver.xml networking.xml \
@@ -14,7 +16,7 @@ DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \ 
	    genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \

	    80211.xml debugobjects.xml sh.xml regulator.xml \

	    alsa-driver-api.xml writing-an-alsa-driver.xml \

	    tracepoint.xml media.xml drm.xml

	    tracepoint.xml $(TMPMEDIA)/media.xml drm.xml



###

# The build process is as follows (targets):
@@ -32,7 +34,7 @@ PS_METHOD = $(prefer-db2x) 


###

# The targets that may be used.

PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs xmldoclinks

PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs mediaprep



BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))

xmldocs: $(BOOKS)
@@ -45,27 +47,13 @@ PDF := $(patsubst %.xml, %.pdf, $(BOOKS)) 
pdfdocs: $(PDF)



HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))

htmldocs: $(HTML) xmldoclinks

htmldocs: $(HTML)

	$(call build_main_index)

	$(call build_images)



MAN := $(patsubst %.xml, %.9, $(BOOKS))

mandocs: $(MAN)



build_images = mkdir -p $(objtree)/Documentation/DocBook/media/ && \

	       cp $(srctree)/Documentation/DocBook/dvb/*.png \

	          $(srctree)/Documentation/DocBook/v4l/*.gif \

		  $(objtree)/Documentation/DocBook/media/



xmldoclinks:

ifneq ($(objtree),$(srctree))

	for dep in dvb media-entities.tmpl media-indices.tmpl v4l; do \

		rm -f $(objtree)/Documentation/DocBook/$$dep \

		&& ln -s $(srctree)/Documentation/DocBook/$$dep $(objtree)/Documentation/DocBook/ \

		|| exit; \

	done

endif



installmandocs: mandocs

	mkdir -p /usr/local/man/man9/

	install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/
@@ -97,7 +85,7 @@ define rule_docproc 
        ) > $(dir $@).$(notdir $@).cmd

endef



%.xml: %.tmpl xmldoclinks FORCE

%.xml: %.tmpl FORCE

	$(call if_changed_rule,docproc)



###
@@ -150,7 +138,7 @@ quiet_cmd_db2pdf = PDF $@ 


index = index.html

main_idx = Documentation/DocBook/$(index)

build_main_index = rm -rf $(main_idx) && \

build_main_index = rm -rf $(main_idx); \

		   echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \

		   echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \

		   cat $(HTML) >> $(main_idx)
@@ -240,7 +228,7 @@ clean-files := $(DOCBOOKS) \ 
	$(patsubst %.xml, %.9,    $(DOCBOOKS)) \

	$(index)



clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man

clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man $(MEDIA_DIR)



cleandocs:

	$(Q)rm -f $(call objectify, $(clean-files))
@@ -250,3 +238,252 @@ cleandocs: 
# information in a variable se we can use it in if_changed and friends.



.PHONY: $(PHONY)





#

# Media build rules - Auto-generates media contents/indexes and *.h xml's

#



SHELL=/bin/bash



MEDIA_DIR=$(objtree)/Documentation/DocBook/$(TMPMEDIA)



V4L_SGMLS = \

	$(shell ls $(srctree)/Documentation/DocBook/v4l/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)') \

	capture.c.xml \

	keytable.c.xml \

	v4l2grab.c.xml



DVB_SGMLS = \

	$(shell ls $(srctree)/Documentation/DocBook/dvb/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)')



MEDIA_TEMP =  media-entities.tmpl \

	      media-indices.tmpl \

	      videodev2.h.xml \

	      frontend.h.xml



MEDIA_SGMLS =  $(addprefix ./,$(V4L_SGMLS)) $(addprefix ./,$(DVB_SGMLS)) $(addprefix ./,$(MEDIA_TEMP))



MEDIA_TEMP_OBJ := $(addprefix $(MEDIA_DIR)/,$(MEDIA_TEMP))



FUNCS = \

	close \

	ioctl \

	mmap \

	munmap \

	open \

	poll \

	read \

	select \

	write \



IOCTLS = \

	$(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/videodev2.h) \

	$(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/media.h) \

	$(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/v4l2-subdev.h) \

	VIDIOC_SUBDEV_G_FRAME_INTERVAL \

	VIDIOC_SUBDEV_S_FRAME_INTERVAL \

	VIDIOC_SUBDEV_ENUM_MBUS_CODE \

	VIDIOC_SUBDEV_ENUM_FRAME_SIZE \

	VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \



TYPES = \

	$(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/linux/videodev2.h)



ENUMS = \

	$(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \

	$(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \

	$(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h) \

	$(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h)



STRUCTS = \

	$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \

	$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \

	$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h) \

	$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h)



ERRORS = \

	EACCES \

	EAGAIN \

	EBADF \

	EBUSY \

	EFAULT \

	EIO \

	EINTR \

	EINVAL \

	ENFILE \

	ENOMEM \

	ENOSPC \

	ENOTTY \

	ENXIO \

	EMFILE \

	EPERM \

	ERANGE \

	EPIPE \



ESCAPE = \

	-e "s/&/\\&amp;/g" \

	-e "s/</\\&lt;/g" \

	-e "s/>/\\&gt;/g"



FILENAME = \

	-e s,"^[^\/]*/",, \

	-e s/"\\.xml"// \

	-e s/"\\.tmpl"// \

	-e s/\\\./-/g \

	-e s/"^func-"// \

	-e s/"^pixfmt-"// \

	-e s/"^vidioc-"//



# Generate references to these structs in videodev2.h.xml.

DOCUMENTED = \

	-e "s/\(enum *\)v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1<link linkend=\"\2\">v4l2_mpeg_cx2341x_video_\2<\/link>/g" \

	-e "s/\(\(enum\|struct\) *\)\(v4l2_[a-zA-Z0-9_]*\)/\1<link linkend=\"\3\">\3<\/link>/g" \

	-e "s/\(V4L2_PIX_FMT_[A-Z0-9_]\+\) /<link linkend=\"\1\">\1<\/link> /g" \

	-e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" \

	-e "s/v4l2\-mpeg\-vbi\-ITV0/v4l2-mpeg-vbi-itv0-1/g"



DVB_DOCUMENTED = \

	-e "s,\(define \)\([A-Z0-9_]\+\)\(\s\+_IO\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \

	-e "s/\(linkend\=\"\)FE_SET_PROPERTY/\1FE_GET_PROPERTY/g"





#

# Media targets and dependencies

#



$(obj)/$(TMPMEDIA)/media.xml: $(obj)/media.tmpl $(MEDIA_TEMP_OBJ) FORCE

	$(call if_changed_rule,docproc)



$(MEDIA_DIR)/v4l2.xml:

	@$($(quiet)gen_xml)

	@(mkdir -p $(MEDIA_DIR))

	@(cp $(srctree)/Documentation/DocBook/dvb/*.png $(srctree)/Documentation/DocBook/v4l/*.gif $(MEDIA_DIR)/)

	@(ln -sf $(srctree)/Documentation/DocBook/v4l/*xml $(MEDIA_DIR)/)

	@(ln -sf $(srctree)/Documentation/DocBook/dvb/*xml $(MEDIA_DIR)/)



$(MEDIA_DIR)/videodev2.h.xml: $(srctree)/include/linux/videodev2.h $(MEDIA_DIR)/v4l2.xml

	@$($(quiet)gen_xml)

	@(					\

	echo "<programlisting>") > $@

	@(					\

	expand --tabs=8 < $< |			\

	  sed $(ESCAPE) $(DOCUMENTED) |		\

	  sed 's/i\.e\./&ie;/') >> $@

	@(					\

	echo "</programlisting>") >> $@



$(MEDIA_DIR)/frontend.h.xml: $(srctree)/include/linux/dvb/frontend.h $(MEDIA_DIR)/v4l2.xml

	@$($(quiet)gen_xml)

	@(					\

	echo "<programlisting>") > $@

	@(					\

	expand --tabs=8 < $< |			\

	  sed $(ESCAPE) $(DVB_DOCUMENTED) |	\

	  sed 's/i\.e\./&ie;/') >> $@

	@(					\

	echo "</programlisting>") >> $@



$(MEDIA_DIR)/media-entities.tmpl: $(MEDIA_DIR)/v4l2.xml

	@$($(quiet)gen_xml)

	@(								\

	echo "<!-- Generated file! Do not edit. -->") >$@

	@(								\

	echo -e "\n<!-- Functions -->") >>$@

	@(								\

	for ident in $(FUNCS) ; do					\

	  entity=`echo $$ident | tr _ -` ;				\

	  echo "<!ENTITY func-$$entity \"<link"				\

	    "linkend='func-$$entity'><function>$$ident()</function></link>\">" \

	  >>$@ ;							\

	done)

	@(								\

	echo -e "\n<!-- Ioctls -->") >>$@

	@(								\

	for ident in $(IOCTLS) ; do					\

	  entity=`echo $$ident | tr _ -` ;				\

	  id=`grep "<refname>$$ident" $(MEDIA_DIR)/vidioc-*.xml | sed -r s,"^.*/(.*).xml.*","\1",` ; \

	  echo "<!ENTITY $$entity \"<link"				\

	    "linkend='$$id'><constant>$$ident</constant></link>\">"	\

	  >>$@ ;							\

	done)

	@(								\

	echo -e "\n<!-- Types -->") >>$@

	@(								\

	for ident in $(TYPES) ; do					\

	  entity=`echo $$ident | tr _ -` ;				\

	  echo "<!ENTITY $$entity \"<link"				\

	    "linkend='$$entity'>$$ident</link>\">" >>$@ ;		\

	done)

	@(								\

	echo -e "\n<!-- Enums -->") >>$@

	@(								\

	for ident in $(ENUMS) ; do					\

	  entity=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -` ; \

	  echo "<!ENTITY $$entity \"enum&nbsp;<link"			\

	    "linkend='$$entity'>$$ident</link>\">" >>$@ ;		\

	done)

	@(								\

	echo -e "\n<!-- Structures -->") >>$@

	@(								\

	for ident in $(STRUCTS) ; do					\

	  entity=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \

	  echo "<!ENTITY $$entity \"struct&nbsp;<link"			\

	    "linkend='$$entity'>$$ident</link>\">" >>$@ ;		\

	done)

	@(								\

	echo -e "\n<!-- Error Codes -->") >>$@

	@(								\

	for ident in $(ERRORS) ; do					\

	  echo "<!ENTITY $$ident \"<errorcode>$$ident</errorcode>"	\

	    "error code\">" >>$@ ;					\

	done)

	@(								\

	echo -e "\n<!-- Subsections -->") >>$@

	@(								\

	for file in $(MEDIA_SGMLS) ; do					\

	  entity=`echo "$$file" | sed $(FILENAME) -e s/"^([^-]*)"/sub\1/` ; \

	  if ! echo "$$file" |						\

	    grep -q -E -e '^(func|vidioc|pixfmt)-' ; then		\

	    echo "<!ENTITY sub-$$entity SYSTEM \"$$file\">" >>$@ ;	\

	  fi ;								\

	done)

	@(								\

	echo -e "\n<!-- Function Reference -->") >>$@

	@(								\

	for file in $(MEDIA_SGMLS) ; do					\

	  if echo "$$file" |						\

	    grep -q -E -e '(func|vidioc|pixfmt)-' ; then		\

	    entity=`echo "$$file" |sed $(FILENAME)` ;			\

	    echo "<!ENTITY $$entity SYSTEM \"$$file\">" >>$@ ;	\

	  fi ;								\

	done)



# Jade can auto-generate a list-of-tables, which includes all structs,

# but we only want data types, all types, and sorted please.

$(MEDIA_DIR)/media-indices.tmpl: $(MEDIA_DIR)/v4l2.xml

	@$($(quiet)gen_xml)

	@(								\

	echo "<!-- Generated file! Do not edit. -->") >$@

	@(								\

	echo -e "\n<index><title>List of Types</title>") >>$@

	@(								\

	for ident in $(TYPES) ; do					\

	  id=`echo $$ident | tr _ -` ;					\

	  echo "<indexentry><primaryie><link"				\

	    "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \

	done)

	@(								\

	for ident in $(ENUMS) ; do					\

	  id=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -`; \

	  echo "<indexentry><primaryie>enum&nbsp;<link"			\

	    "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \

	done)

	@(								\

	for ident in $(STRUCTS) ; do					\

	  id=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \

	  echo "<indexentry><primaryie>struct&nbsp;<link"		\

	    "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \

	done)

	@(								\

	echo "</index>") >>$@