Issue #1769 - Part 1: Add vendored libjxl and highway sources.

Used old-configure to add the build option for enabling JPEG-XL support.
Highway version: 0.17.0
libjxl version: tree of commit 318c592d98b97d103941b90d47107f06a10c71da

1 files changed, 110 insertions, 0 deletions

diff --git a/media/libjxl/src/doc/sphinx/conf.py b/media/libjxl/src/doc/sphinx/conf.py
new file mode 100644
index 0000000000..1591aefc70
--- /dev/null
+++ b/media/libjxl/src/doc/sphinx/conf.py
@@ -0,0 +1,110 @@
+# Copyright (c) the JPEG XL Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# Configuration file for the Sphinx documentation builder.
+#
+# See https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+import os
+import re
+import subprocess
+
+def GetVersion():
+    """Function to get the version of the current code."""
+    with open(os.path.join(
+            os.path.dirname(__file__), '../../lib/CMakeLists.txt'), 'r') as f:
+        cmakevars = {}
+        for line in f:
+            m = re.match(r'set\(JPEGXL_([A-Z]+)_VERSION ([^\)]+)\)', line)
+            if m:
+                cmakevars[m.group(1)] = m.group(2)
+    return '%s.%s.%s' % (cmakevars['MAJOR'], cmakevars['MINOR'], cmakevars['PATCH'])
+
+def ConfigProject(app, config):
+    # Configure the doxygen xml directory as the "xml" directory next to the
+    # sphinx output directory. Doxygen generates by default the xml files in a
+    # "xml" sub-directory of the OUTPUT_DIRECTORY.
+    build_dir = os.path.dirname(app.outdir)
+    xml_dir = os.path.join(build_dir, 'xml')
+    config.breathe_projects['libjxl'] = xml_dir
+
+    # Read the docs build environment doesn't run our cmake script so instead we
+    # need to run doxygen manually here.
+    if os.environ.get('READTHEDOCS', None) != 'True':
+        return
+    root_dir = os.path.realpath(os.path.join(app.srcdir, '../../'))
+    doxyfile = os.path.join(build_dir, 'Doxyfile-rtd.doc')
+    with open(doxyfile, 'w') as f:
+        f.write(f"""
+FILE_PATTERNS          = *.c *.h
+GENERATE_HTML          = NO
+GENERATE_LATEX         = NO
+GENERATE_XML           = YES
+INPUT                  = lib/include doc/api.txt
+OUTPUT_DIRECTORY       = {build_dir}
+PROJECT_NAME           = LIBJXL
+QUIET                  = YES
+RECURSIVE              = YES
+STRIP_FROM_PATH        = lib/include
+WARN_AS_ERROR          = YES
+""")
+    subprocess.check_call(['doxygen', doxyfile], cwd=root_dir)
+
+def setup(app):
+    # Generate doxygen XML on init when running from Read the docs.
+    app.connect("config-inited", ConfigProject)
+
+### Project information
+
+project = 'libjxl'
+project_copyright = 'JPEG XL Project Authors'
+author = 'JPEG XL Project Authors'
+version = GetVersion()
+
+### General configuration
+
+extensions = [
+    # For integration with doxygen documentation.
+    'breathe',
+    # sphinx readthedocs theme.
+    'sphinx_rtd_theme',
+    # Do we use it?
+    'sphinx.ext.graphviz',
+]
+
+breathe_default_project = 'libjxl'
+breathe_projects = {}
+
+
+# All the API is in C, except those files that end with cxx.h.
+breathe_domain_by_extension = {'h': 'cpp'}
+breathe_domain_by_file_pattern = {
+    '*cxx.h': 'cpp',
+}
+breathe_implementation_filename_extensions = ['.cc']
+
+# These are defined at build time by cmake.
+c_id_attributes = [
+    'JXL_EXPORT',
+    'JXL_DEPRECATED',
+    'JXL_THREADS_EXPORT',
+]
+cpp_id_attributes = c_id_attributes
+
+
+breathe_projects_source = {
+    'libjxl' : ('../../', [
+        'doc/api.txt',
+        'lib/include/jxl',
+    ])
+}
+
+# Recognized suffixes.
+source_suffix = ['.rst', '.md']
+
+### Options for HTML output
+
+# Use the readthedocs.io theme when generating the HTML output.
+html_theme = 'sphinx_rtd_theme'