Merge branch 'mauro-pdf' into docs-next

Mauro says: This series address a series of errors during PDF generation from media documentation. The first patch fixes the late redefinition of a LaTeX command at the Sphinx LaTeX style that causes build to break when some cross-references are used. The next two patches fix PDF output issues with subdev-formats.rst. The next 3 patches fix image includes and their output for PDF. It is aligned with Linus request of not having binary-generated images from their SVG source codes. I still intend to move the remaing PNG images to vectorial ones (SVG), as image scale works better, but this will require some additional work. When done, I'll submit as a separate patch series. It should also be noticed that the last patch violates the output dir, when make is used with "O=some_dir", as Sphinx doesn't accept image files outside the source directory. We'll likely need some Sphinx extension in order to fix it, but at least with this series (plus Jani Nikola's PDF fix series), the PDF output should work fine again. [jc: added a commit fixing up a "make cleandocs" warning]

Merge branch 'mauro-pdf' into docs-next
Mauro says: This series address a series of errors during PDF generation from media documentation. The first patch fixes the late redefinition of a LaTeX command at the Sphinx LaTeX style that causes build to break when some cross-references are used. The next two patches fix PDF output issues with subdev-formats.rst. The next 3 patches fix image includes and their output for PDF. It is aligned with Linus request of not having binary-generated images from their SVG source codes. I still intend to move the remaing PNG images to vectorial ones (SVG), as image scale works better, but this will require some additional work. When done, I'll submit as a separate patch series. It should also be noticed that the last patch violates the output dir, when make is used with "O=some_dir", as Sphinx doesn't accept image files outside the source directory. We'll likely need some Sphinx extension in order to fix it, but at least with this series (plus Jani Nikola's PDF fix series), the PDF output should work fine again. [jc: added a commit fixing up a "make cleandocs" warning]
3ed3e130 · Jonathan Corbet · f5ff9b63 · c54b6b37 · 3ed3e130 · 3ed3e130
Commit 3ed3e130 authored Nov 16, 2016 by Jonathan Corbet
52 changed files
--- a/Documentation/Makefile.sphinx
+++ b/Documentation/Makefile.sphinx
@@ -54,7 +54,7 @@ loop_cmd = $(echo-cmd) $(cmd_$(1))
 #    e.g. "media" for the linux-tv book-set at ./Documentation/media

 quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
-      cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media all;\
+      cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media $2;\
 	BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \
 	$(SPHINXBUILD) \
 	-b $2 \
@@ -98,6 +98,7 @@ installmandocs:

 cleandocs:
 	$(Q)rm -rf $(BUILDDIR)
+	$(Q)$(MAKE) -C Documentation/media clean

 endif # HAVE_SPHINX


--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -37,7 +37,7 @@ from load_config import loadConfig
 extensions = ['kerneldoc', 'rstFlatTable', 'kernel_include', 'cdomain']

 # The name of the math extension changed on Sphinx 1.4
-if minor > 3:
+if major == 1 and minor > 3:
    extensions.append("sphinx.ext.imgmath")
 else:
    extensions.append("sphinx.ext.pngmath")
@@ -332,6 +332,10 @@ latex_elements = {
     '''
 }

+# Fix reference escape troubles with Sphinx 1.4.x
+if major == 1 and minor > 3:
+    latex_elements['preamble']  += '\\renewcommand*{\\DUrole}[2]{ #2 }\n'
+
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).

--- a/Documentation/media/.gitignore
+++ b/Documentation/media/.gitignore
+*.pdf
--- a/Documentation/media/Makefile
+++ b/Documentation/media/Makefile
@@ -10,8 +10,35 @@ FILES = audio.h.rst ca.h.rst dmx.h.rst frontend.h.rst net.h.rst video.h.rst \

 TARGETS := $(addprefix $(BUILDDIR)/, $(FILES))

-.PHONY: all
+IMAGES = \
+	typical_media_device.svg \
+	uapi/dvb/dvbstb.svg \
+	uapi/v4l/constraints.svg \
+	uapi/v4l/subdev-image-processing-full.svg \
+	uapi/v4l/subdev-image-processing-scaling-multi-source.svg \
+	uapi/v4l/subdev-image-processing-crop.svg \
+
+IMGTGT := $(patsubst %.png,%.pdf,$(patsubst %.svg,%.pdf,$(IMAGES)))
+IMGPDF := $(patsubst %,$(SRC_DIR)/%,$(IMGTGT))
+
+cmd = $(echo-cmd) $(cmd_$(1))
+
+quiet_cmd_genpdf = GENPDF  $2
+      cmd_genpdf = convert $2 $3
+
+%.pdf: %.svg
+	@$(call cmd,genpdf,$<,$@)
+
+.PHONY: all html epub xml latex
+
 all: $(BUILDDIR) ${TARGETS}
+html: all
+epub: all
+xml: all
+latex: $(IMGPDF) all
+
+clean:
+	-rm -f $(IMGTGT) 2>/dev/null

 $(BUILDDIR):
 	$(Q)mkdir -p $@
@@ -58,4 +85,4 @@ $(BUILDDIR)/lirc.h.rst: ${UAPI}/lirc.h ${PARSER} $(SRC_DIR)/lirc.h.rst.exception
 	@$($(quiet)gen_rst)

 cleandocs:
-	-rm ${TARGETS}
+	-rm -f ${TARGETS}
--- a/Documentation/media/index.rst
+++ b/Documentation/media/index.rst
 Linux Media Subsystem Documentation
 ===================================

-.. Sphinx 1.4.x has a definition for DUrole that doesn't work on alltt blocks
-.. raw:: latex
-
-	\renewcommand*{\DUrole}[2]{ #2 }
-
 Contents:

 .. toctree::

--- a/Documentation/media/intro.rst
+++ b/Documentation/media/intro.rst
@@ -13,8 +13,8 @@ A typical media device hardware is shown at :ref:`typical_media_device`.

 .. _typical_media_device:

-.. figure::  media_api_files/typical_media_device.*
-    :alt:    typical_media_device.svg
+.. figure::  typical_media_device.*
+    :alt:    typical_media_device.pdf / typical_media_device.svg
    :align:  center

    Typical Media Device

--- a/Documentation/media/media_api_files/typical_media_device.pdf
+++ b/Documentation/media/media_api_files/typical_media_device.pdf
--- a/Documentation/media/media_api_files/typical_media_device.svg
+++ b/Documentation/media/media_api_files/typical_media_device.svg
--- a/Documentation/media/uapi/dvb/dvbstb.svg
+++ b/Documentation/media/uapi/dvb/dvbstb.svg
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+   xml:space="preserve"
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+   inkscape:version="0.91 r13725"
+   sodipodi:docname="dvbstb.svg"
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--- a/Documentation/media/uapi/dvb/intro.rst
+++ b/Documentation/media/uapi/dvb/intro.rst
@@ -55,8 +55,8 @@ Overview

 .. _stb_components:

-.. figure::  intro_files/dvbstb.*
-    :alt:    dvbstb.pdf / dvbstb.png
+.. figure::  dvbstb.*
+    :alt:    dvbstb.pdf / dvbstb.svg
    :align:  center

    Components of a DVB card/STB

--- a/Documentation/media/uapi/dvb/intro_files/dvbstb.pdf
+++ b/Documentation/media/uapi/dvb/intro_files/dvbstb.pdf
--- a/Documentation/media/uapi/dvb/intro_files/dvbstb.png
+++ b/Documentation/media/uapi/dvb/intro_files/dvbstb.png
--- a/Documentation/media/uapi/v4l/subdev-formats_files/bayer.png
+++ b/Documentation/media/uapi/v4l/subdev-formats_files/bayer.png
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--- a/Documentation/media/uapi/v4l/crop.png
+++ b/Documentation/media/uapi/v4l/crop.png
--- a/Documentation/media/uapi/v4l/crop.rst
+++ b/Documentation/media/uapi/v4l/crop.rst
@@ -53,8 +53,8 @@ Cropping Structures

 .. _crop-scale:

-.. figure::  crop_files/crop.*
-    :alt:    crop.pdf / crop.gif
+.. figure::  crop.png
+    :alt:    crop.png
    :align:  center

    Image Cropping, Insertion and Scaling

--- a/Documentation/media/uapi/v4l/crop_files/crop.gif
+++ b/Documentation/media/uapi/v4l/crop_files/crop.gif
--- a/Documentation/media/uapi/v4l/crop_files/crop.pdf
+++ b/Documentation/media/uapi/v4l/crop_files/crop.pdf
--- a/Documentation/media/uapi/v4l/dev-raw-vbi.rst
+++ b/Documentation/media/uapi/v4l/dev-raw-vbi.rst
@@ -221,8 +221,8 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does

 .. _vbi-hsync:

-.. figure::  dev-raw-vbi_files/vbi_hsync.*
-    :alt:    vbi_hsync.pdf / vbi_hsync.gif
+.. figure::  vbi_hsync.png
+    :alt:    vbi_hsync.png
    :align:  center

    **Figure 4.1. Line synchronization**
@@ -230,8 +230,8 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does

 .. _vbi-525:

-.. figure::  dev-raw-vbi_files/vbi_525.*
-    :alt:    vbi_525.pdf / vbi_525.gif
+.. figure::  vbi_525.png
+    :alt:    vbi_525.png
    :align:  center

    **Figure 4.2. ITU-R 525 line numbering (M/NTSC and M/PAL)**
@@ -240,8 +240,8 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does

 .. _vbi-625:

-.. figure::  dev-raw-vbi_files/vbi_625.*
-    :alt:    vbi_625.pdf / vbi_625.gif
+.. figure::  vbi_625.png
+    :alt:    vbi_625.png
    :align:  center

    **Figure 4.3. ITU-R 625 line numbering**

--- a/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_525.gif
+++ b/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_525.gif
--- a/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_525.pdf
+++ b/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_525.pdf
--- a/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_625.gif
+++ b/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_625.gif
--- a/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_625.pdf
+++ b/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_625.pdf
--- a/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_hsync.gif
+++ b/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_hsync.gif
--- a/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_hsync.pdf
+++ b/Documentation/media/uapi/v4l/dev-raw-vbi_files/vbi_hsync.pdf
--- a/Documentation/media/uapi/v4l/dev-subdev.rst
+++ b/Documentation/media/uapi/v4l/dev-subdev.rst
@@ -99,8 +99,8 @@ the video sensor and the host image processing hardware.

 .. _pipeline-scaling:

-.. figure::  dev-subdev_files/pipeline.*
-    :alt:    pipeline.pdf / pipeline.png
+.. figure::  pipeline.png
+    :alt:    pipeline.png
    :align:  center

    Image Format Negotiation on Pipelines
@@ -404,8 +404,8 @@ selection will refer to the sink pad format dimensions instead.

 .. _subdev-image-processing-crop:

-.. figure::  dev-subdev_files/subdev-image-processing-crop.*
-    :alt:    subdev-image-processing-crop.svg
+.. figure::  subdev-image-processing-crop.*
+    :alt:    subdev-image-processing-crop.pdf / subdev-image-processing-crop.svg
    :align:  center

    **Figure 4.5. Image processing in subdevs: simple crop example**
@@ -421,8 +421,8 @@ pad.

 .. _subdev-image-processing-scaling-multi-source:

-.. figure::  dev-subdev_files/subdev-image-processing-scaling-multi-source.*
-    :alt:    subdev-image-processing-scaling-multi-source.svg
+.. figure::  subdev-image-processing-scaling-multi-source.*
+    :alt:    subdev-image-processing-scaling-multi-source.pdf / subdev-image-processing-scaling-multi-source.svg
    :align:  center

    **Figure 4.6. Image processing in subdevs: scaling with multiple sources**
@@ -437,8 +437,8 @@ an area at location specified by the source crop rectangle from it.

 .. _subdev-image-processing-full:

-.. figure::  dev-subdev_files/subdev-image-processing-full.*
-    :alt:    subdev-image-processing-full.svg
+.. figure::  subdev-image-processing-full.*
+    :alt:    subdev-image-processing-full.pdf / subdev-image-processing-full.svg
    :align:  center

    **Figure 4.7. Image processing in subdevs: scaling and composition with multiple sinks and sources**

--- a/Documentation/media/uapi/v4l/dev-subdev_files/pipeline.pdf
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/pipeline.pdf
--- a/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-crop.pdf
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-crop.pdf
--- a/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-full.pdf
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-full.pdf
--- a/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-scaling-multi-source.pdf
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-scaling-multi-source.pdf
--- a/Documentation/media/uapi/v4l/field-order.rst
+++ b/Documentation/media/uapi/v4l/field-order.rst
@@ -141,8 +141,8 @@ enum v4l2_field
 Field Order, Top Field First Transmitted
 ========================================

-.. figure::  field-order_files/fieldseq_tb.*
-    :alt:    fieldseq_tb.pdf / fieldseq_tb.gif
+.. figure::  fieldseq_tb.png
+    :alt:    fieldseq_tb.png
    :align:  center


@@ -151,7 +151,7 @@ Field Order, Top Field First Transmitted
 Field Order, Bottom Field First Transmitted
 ===========================================

-.. figure::  field-order_files/fieldseq_bt.*
-    :alt:    fieldseq_bt.pdf / fieldseq_bt.gif
+.. figure::  fieldseq_bt.png
+    :alt:    fieldseq_bt.png
    :align:  center

--- a/Documentation/media/uapi/v4l/field-order_files/fieldseq_bt.gif
+++ b/Documentation/media/uapi/v4l/field-order_files/fieldseq_bt.gif
--- a/Documentation/media/uapi/v4l/field-order_files/fieldseq_bt.pdf
+++ b/Documentation/media/uapi/v4l/field-order_files/fieldseq_bt.pdf
--- a/Documentation/media/uapi/v4l/field-order_files/fieldseq_tb.gif
+++ b/Documentation/media/uapi/v4l/field-order_files/fieldseq_tb.gif
--- a/Documentation/media/uapi/v4l/field-order_files/fieldseq_tb.pdf
+++ b/Documentation/media/uapi/v4l/field-order_files/fieldseq_tb.pdf
--- a/Documentation/media/uapi/v4l/fieldseq_bt.png
+++ b/Documentation/media/uapi/v4l/fieldseq_bt.png
--- a/Documentation/media/uapi/v4l/fieldseq_tb.png
+++ b/Documentation/media/uapi/v4l/fieldseq_tb.png
--- a/Documentation/media/uapi/v4l/pixfmt-nv12mt_files/nv12mt.png
+++ b/Documentation/media/uapi/v4l/pixfmt-nv12mt_files/nv12mt.png
--- a/Documentation/media/uapi/v4l/pixfmt-nv12mt_files/nv12mt_example.png
+++ b/Documentation/media/uapi/v4l/pixfmt-nv12mt_files/nv12mt_example.png
--- a/Documentation/media/uapi/v4l/dev-subdev_files/pipeline.png
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/pipeline.png
--- a/Documentation/media/uapi/v4l/pixfmt-nv12mt.rst
+++ b/Documentation/media/uapi/v4l/pixfmt-nv12mt.rst
@@ -33,7 +33,7 @@ Layout of macroblocks in memory is presented in the following figure.

 .. _nv12mt:

-.. figure::  pixfmt-nv12mt_files/nv12mt.*
+.. figure::  nv12mt.png
    :alt:    nv12mt.png
    :align:  center

@@ -50,7 +50,7 @@ interleaved. Height of the buffer is aligned to 32.

 .. _nv12mt_ex:

-.. figure::  pixfmt-nv12mt_files/nv12mt_example.*
+.. figure::  nv12mt_example.png
    :alt:    nv12mt_example.png
    :align:  center


--- a/Documentation/media/uapi/v4l/selection-api-003.rst
+++ b/Documentation/media/uapi/v4l/selection-api-003.rst
@@ -7,7 +7,7 @@ Selection targets

 .. _sel-targets-capture:

-.. figure::  selection-api-003_files/selection.*
+.. figure::  selection.png
    :alt:    selection.png
    :align:  center


--- a/Documentation/media/uapi/v4l/selection-api-003_files/selection.png
+++ b/Documentation/media/uapi/v4l/selection-api-003_files/selection.png
--- a/Documentation/media/uapi/v4l/subdev-formats.rst
+++ b/Documentation/media/uapi/v4l/subdev-formats.rst
@@ -1514,23 +1514,28 @@ be named ``MEDIA_BUS_FMT_SRGGB10_2X8_PADHI_LE``.

 .. _bayer-patterns:

-.. figure::  subdev-formats_files/bayer.*
+.. figure::  bayer.png
    :alt:    bayer.png
    :align:  center

    **Figure 4.8 Bayer Patterns**

-
-
 The following table lists existing packed Bayer formats. The data
 organization is given as an example for the first pixel only.


+.. HACK: ideally, we would be using adjustbox here. However, Sphinx
+.. is a very bad behaviored guy: if the table has more than 30 cols,
+.. it switches to long table, and there's no way to override it.
+
+
 .. raw:: latex

-    \newline\newline\begin{adjustbox}{width=\columnwidth}
+    \begingroup
+    \tiny
+    \setlength{\tabcolsep}{2pt}

-.. tabularcolumns:: |p{7.6cm}|p{1.6cm}|p{0.7cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|p{0.5cm}|
+.. tabularcolumns:: |p{4.0cm}|p{0.7cm}|p{0.3cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|

 .. _v4l2-mbus-pixelcode-bayer:

@@ -2314,7 +2319,7 @@ organization is given as an example for the first pixel only.

 .. raw:: latex

-    \end{adjustbox}\newline\newline
+    \endgroup


 Packed YUV Formats

--- a/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-crop.svg
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-crop.svg
--- a/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-full.svg
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-full.svg
--- a/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-scaling-multi-source.svg
+++ b/Documentation/media/uapi/v4l/dev-subdev_files/subdev-image-processing-scaling-multi-source.svg
--- a/Documentation/media/uapi/v4l/vbi_525.png
+++ b/Documentation/media/uapi/v4l/vbi_525.png
--- a/Documentation/media/uapi/v4l/vbi_625.png
+++ b/Documentation/media/uapi/v4l/vbi_625.png
--- a/Documentation/media/uapi/v4l/vbi_hsync.png
+++ b/Documentation/media/uapi/v4l/vbi_hsync.png
--- a/Documentation/media/uapi/v4l/vidioc-g-selection.rst
+++ b/Documentation/media/uapi/v4l/vidioc-g-selection.rst
@@ -129,8 +129,8 @@ Selection targets and flags are documented in

 .. _sel-const-adjust:

-.. figure::  vidioc-g-selection_files/constraints.*
-    :alt:    constraints.png
+.. figure::  constraints.*
+    :alt:    constraints.pdf / constraints.svg
    :align:  center

    Size adjustments with constraint flags.

--- a/Documentation/media/uapi/v4l/vidioc-g-selection_files/constraints.png
+++ b/Documentation/media/uapi/v4l/vidioc-g-selection_files/constraints.png