Index: doc/devel.cfg
===================================================================
--- doc/devel.cfg	(revision 2ebf76c171896adab3a2321bd68f5ebacec80c56)
+++ doc/devel.cfg	(revision 9a83b9189d54ba8374c75df41789281c2a509127)
@@ -1,3 +1,3 @@
-# Doxyfile 1.3.4
+# Doxyfile 1.4.6
 
 # This file describes the settings to be used by the documentation system
@@ -24,5 +24,5 @@
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.2.0
+PROJECT_NUMBER         = 0.3.0
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
@@ -33,12 +33,22 @@
 OUTPUT_DIRECTORY       = devel
 
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 
+# 4096 sub-directories (in 2 levels) under the output directory of each output 
+# format and will distribute the generated files over these directories. 
+# Enabling this option can be useful when feeding doxygen a huge amount of 
+# source files, where putting all generated files in the same directory would 
+# otherwise cause performance problems for the file system.
+
+CREATE_SUBDIRS         = NO
+
 # The OUTPUT_LANGUAGE tag is used to specify the language in which all 
 # documentation generated by doxygen is written. Doxygen will use this 
 # information to generate all constant output in the proper language. 
 # The default language is English, other supported languages are: 
-# Brazilian, Catalan, Chinese, Chinese-Traditional, Croatian, Czech, Danish, Dutch, 
-# Finnish, French, German, Greek, Hungarian, Italian, Japanese, Japanese-en 
-# (Japanese with English messages), Korean, Norwegian, Polish, Portuguese, 
-# Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish, and Ukrainian.
+# Brazilian, Catalan, Chinese, Chinese-Traditional, Croatian, Czech, Danish, 
+# Dutch, Finnish, French, German, Greek, Hungarian, Italian, Japanese, 
+# Japanese-en (Japanese with English messages), Korean, Korean-en, Norwegian, 
+# Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish, 
+# Swedish, and Ukrainian.
 
 OUTPUT_LANGUAGE        = English
@@ -68,4 +78,16 @@
 REPEAT_BRIEF           = YES
 
+# This tag implements a quasi-intelligent brief description abbreviator 
+# that is used to form the text in various listings. Each string 
+# in this list, if found as the leading text of the brief description, will be 
+# stripped from the text and the result after processing the whole list, is 
+# used as the annotated text. Otherwise, the brief description is used as-is. 
+# If left blank, the following values are used ("$name" is automatically 
+# replaced with the name of the entity): "The $name class" "The $name widget" 
+# "The $name file" "is" "provides" "specifies" "contains" 
+# "represents" "a" "an" "the"
+
+ABBREVIATE_BRIEF       = 
+
 # If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then 
 # Doxygen will generate a detailed section even if there is only a brief 
@@ -74,8 +96,8 @@
 ALWAYS_DETAILED_SEC    = NO
 
-# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all inherited 
-# members of a class in the documentation of that class as if those members were 
-# ordinary class members. Constructors, destructors and assignment operators of 
-# the base classes will not be shown.
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all 
+# inherited members of a class in the documentation of that class as if those 
+# members were ordinary class members. Constructors, destructors and assignment 
+# operators of the base classes will not be shown.
 
 INLINE_INHERITED_MEMB  = NO
@@ -90,7 +112,18 @@
 # can be used to strip a user-defined part of the path. Stripping is 
 # only done if one of the specified strings matches the left-hand part of 
-# the path. It is allowed to use relative paths in the argument list.
+# the path. The tag can be used to show relative paths in the file list. 
+# If left blank the directory from which doxygen is run is used as the 
+# path to strip.
 
 STRIP_FROM_PATH        = 
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of 
+# the path mentioned in the documentation of a class, which tells 
+# the reader which header file to include in order to use a class. 
+# If left blank only the name of the header file containing the class 
+# definition is used. Otherwise one should specify the include paths that 
+# are normally passed to the compiler using the -I flag.
+
+STRIP_FROM_INC_PATH    = 
 
 # If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter 
@@ -104,5 +137,5 @@
 # comment as the brief description. If set to NO, the JavaDoc 
 # comments will behave just like the Qt-style comments (thus requiring an 
-# explict @brief command for a brief description.
+# explicit @brief command for a brief description.
 
 JAVADOC_AUTOBRIEF      = YES
@@ -125,14 +158,13 @@
 # If the INHERIT_DOCS tag is set to YES (the default) then an undocumented 
 # member inherits the documentation from any documented member that it 
-# reimplements.
+# re-implements.
 
 INHERIT_DOCS           = YES
 
-# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
-# tag is set to YES, then doxygen will reuse the documentation of the first 
-# member in the group (if any) for the other members of the group. By default 
-# all members of a group must be documented explicitly.
-
-DISTRIBUTE_GROUP_DOC   = NO
+# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce 
+# a new page for each member. If set to NO, the documentation of a member will 
+# be part of the file/class/namespace that contains it.
+
+SEPARATE_MEMBER_PAGES  = NO
 
 # The TAB_SIZE tag can be used to set the number of spaces in a tab. 
@@ -150,6 +182,6 @@
 ALIASES                = 
 
-# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources 
-# only. Doxygen will then generate output that is more tailored for C. 
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C 
+# sources only. Doxygen will then generate output that is more tailored for C. 
 # For instance, some of the names that are used will be different. The list 
 # of all members will be omitted, etc.
@@ -157,10 +189,26 @@
 OPTIMIZE_OUTPUT_FOR_C  = YES
 
-# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java sources 
-# only. Doxygen will then generate output that is more tailored for Java. 
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java 
+# sources only. Doxygen will then generate output that is more tailored for Java. 
 # For instance, namespaces will be presented as packages, qualified scopes 
 # will look different, etc.
 
 OPTIMIZE_OUTPUT_JAVA   = NO
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want to 
+# include (a tag file for) the STL sources as input, then you should 
+# set this tag to YES in order to let doxygen match functions declarations and 
+# definitions whose arguments contain STL classes (e.g. func(std::string); v.s. 
+# func(std::string) {}). This also make the inheritance and collaboration 
+# diagrams that involve STL classes more complete and accurate.
+
+BUILTIN_STL_SUPPORT    = NO
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
+# tag is set to YES, then doxygen will reuse the documentation of the first 
+# member in the group (if any) for the other members of the group. By default 
+# all members of a group must be documented explicitly.
+
+DISTRIBUTE_GROUP_DOC   = NO
 
 # Set the SUBGROUPING tag to YES (the default) to allow class member groups of 
@@ -199,4 +247,11 @@
 EXTRACT_LOCAL_CLASSES  = YES
 
+# This flag is only useful for Objective-C code. When set to YES local 
+# methods, which are defined in the implementation section but not in 
+# the interface are included in the documentation. 
+# If set to NO (the default) only methods in the interface are included.
+
+EXTRACT_LOCAL_METHODS  = NO
+
 # If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all 
 # undocumented members of documented classes, files or namespaces. 
@@ -239,5 +294,5 @@
 # allowed. This is useful if you have classes or files whose names only differ 
 # in case and if your file system supports case sensitive file names. Windows 
-# users are advised to set this option to NO.
+# and Mac users are advised to set this option to NO.
 
 CASE_SENSE_NAMES       = YES
@@ -266,4 +321,21 @@
 
 SORT_MEMBER_DOCS       = YES
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the 
+# brief documentation of file, namespace and class members alphabetically 
+# by member name. If set to NO (the default) the members will appear in 
+# declaration order.
+
+SORT_BRIEF_DOCS        = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be 
+# sorted by fully-qualified names, including namespaces. If set to 
+# NO (the default), the class list will be sorted only by class name, 
+# not including the namespace part. 
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the 
+# alphabetical list.
+
+SORT_BY_SCOPE_NAME     = NO
 
 # The GENERATE_TODOLIST tag can be used to enable (YES) or 
@@ -312,4 +384,20 @@
 SHOW_USED_FILES        = YES
 
+# If the sources in your project are distributed over multiple directories 
+# then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy 
+# in the documentation. The default is NO.
+
+SHOW_DIRECTORIES       = NO
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that 
+# doxygen should invoke to get the current version for each file (typically from the 
+# version control system). Doxygen will invoke the program by executing (via 
+# popen()) the command <command> <input-file>, where <command> is the value of 
+# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file 
+# provided by doxygen. Whatever the program writes to standard output 
+# is used as the file version. See the manual for examples.
+
+FILE_VERSION_FILTER    = 
+
 #---------------------------------------------------------------------------
 # configuration options related to warning and progress messages
@@ -340,8 +428,18 @@
 WARN_IF_DOC_ERROR      = YES
 
+# This WARN_NO_PARAMDOC option can be abled to get warnings for 
+# functions that are documented, but have no documentation for their parameters 
+# or return value. If set to NO (the default) doxygen will only warn about 
+# wrong or incomplete parameter documentation, but not about the absence of 
+# documentation.
+
+WARN_NO_PARAMDOC       = NO
+
 # The WARN_FORMAT tag determines the format of the warning messages that 
 # doxygen can produce. The string should contain the $file, $line, and $text 
 # tags, which will be replaced by the file and line number from which the 
-# warning originated and the warning text.
+# warning originated and the warning text. Optionally the format may contain 
+# $version, which will be replaced by the version of the file (if it could 
+# be obtained via FILE_VERSION_FILTER)
 
 WARN_FORMAT            = "$file:$line: $text"
@@ -362,6 +460,6 @@
 # with spaces.
 
-#INPUT                  = src examples
-INPUT                  = ../src ../ext
+INPUT                  = ../src \
+                         ../ext
 
 # If the value of the INPUT tag contains directories, you can use the 
@@ -369,6 +467,6 @@
 # and *.h) to filter out the source-files in the directories. If left 
 # blank the following patterns are tested: 
-# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx *.hpp 
-# *.h++ *.idl *.odl *.cs *.php *.php3 *.inc
+# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx 
+# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py
 
 FILE_PATTERNS          = 
@@ -386,6 +484,7 @@
 EXCLUDE                = 
 
-# The EXCLUDE_SYMLINKS tag can be used select whether or not files or directories 
-# that are symbolic links (a Unix filesystem feature) are excluded from the input.
+# The EXCLUDE_SYMLINKS tag can be used select whether or not files or 
+# directories that are symbolic links (a Unix filesystem feature) are excluded 
+# from the input.
 
 EXCLUDE_SYMLINKS       = NO
@@ -393,5 +492,7 @@
 # If the value of the INPUT tag contains directories, you can use the 
 # EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude 
-# certain files from those directories.
+# certain files from those directories. Note that the wildcards are matched 
+# against the file with absolute path, so to exclude all test directories 
+# for example use the pattern */test/*
 
 EXCLUDE_PATTERNS       = 
@@ -428,7 +529,17 @@
 # is the value of the INPUT_FILTER tag, and <input-file> is the name of an 
 # input file. Doxygen will then use the output that the filter program writes 
-# to standard output.
+# to standard output.  If FILTER_PATTERNS is specified, this tag will be 
+# ignored.
 
 INPUT_FILTER           = 
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern 
+# basis.  Doxygen will compare the file name with each pattern and apply the 
+# filter if there is a match.  The filters are a list of the form: 
+# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further 
+# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER 
+# is applied to all files.
+
+FILTER_PATTERNS        = 
 
 # If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using 
@@ -443,7 +554,8 @@
 
 # If the SOURCE_BROWSER tag is set to YES then a list of source files will 
-# be generated. Documented entities will be cross-referenced with these sources.
-
-#SOURCE_BROWSER         = NO
+# be generated. Documented entities will be cross-referenced with these sources. 
+# Note: To get rid of all source code in the generated output, make sure also 
+# VERBATIM_HEADERS is set to NO.
+
 SOURCE_BROWSER         = YES
 
@@ -470,4 +582,12 @@
 
 REFERENCES_RELATION    = YES
+
+# If the USE_HTAGS tag is set to YES then the references to source code 
+# will point to the HTML generated by the htags(1) tool instead of doxygen 
+# built-in source browser. The htags tool is part of GNU's global source 
+# tagging system (see http://www.gnu.org/software/global/global.html). You 
+# will need version 4.8.6 or higher.
+
+USE_HTAGS              = NO
 
 # If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen 
@@ -536,5 +656,7 @@
 # style sheet that is used by each HTML page. It can be used to 
 # fine-tune the look of the HTML output. If the tag is left blank doxygen 
-# will generate a default style sheet
+# will generate a default style sheet. Note that doxygen will try to copy 
+# the style sheet file to the HTML output directory, so don't put your own 
+# stylesheet in the HTML output directory as well, or it will be erased!
 
 HTML_STYLESHEET        = aubio.css
@@ -556,5 +678,5 @@
 # be used to specify the file name of the resulting .chm file. You 
 # can add a path in front of the file if the result should not be 
-# written to the html output dir.
+# written to the html output directory.
 
 CHM_FILE               = 
@@ -691,5 +813,5 @@
 
 # If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output 
-# The RTF output is optimised for Word 97 and may not look very pretty with 
+# The RTF output is optimized for Word 97 and may not look very pretty with 
 # other RTF readers or editors.
 
@@ -718,5 +840,5 @@
 
 # Load stylesheet definitions from file. Syntax is similar to doxygen's 
-# config file, i.e. a series of assigments. You only have to provide 
+# config file, i.e. a series of assignments. You only have to provide 
 # replacements, missing definitions are set to their default value.
 
@@ -762,7 +884,5 @@
 # If the GENERATE_XML tag is set to YES Doxygen will 
 # generate an XML file that captures the structure of 
-# the code including all documentation. Note that this 
-# feature is still experimental and incomplete at the 
-# moment.
+# the code including all documentation.
 
 GENERATE_XML           = NO
@@ -785,4 +905,11 @@
 
 XML_DTD                = 
+
+# If the XML_PROGRAMLISTING tag is set to YES Doxygen will 
+# dump the program listings (including syntax highlighting 
+# and cross-referencing information) to the XML output. Note that 
+# enabling this will significantly increase the size of the XML output.
+
+XML_PROGRAMLISTING     = YES
 
 #---------------------------------------------------------------------------
@@ -850,5 +977,5 @@
 # If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES 
 # then the macro expansion is limited to the macros specified with the 
-# PREDEFINED and EXPAND_AS_PREDEFINED tags.
+# PREDEFINED and EXPAND_AS_DEFINED tags.
 
 EXPAND_ONLY_PREDEF     = NO
@@ -876,5 +1003,7 @@
 # gcc). The argument of the tag is a list of macros of the form: name 
 # or name=definition (no spaces). If the definition and the = are 
-# omitted =1 is assumed.
+# omitted =1 is assumed. To prevent a macro definition from being 
+# undefined via #undef or recursively expanded use the := operator 
+# instead of the = operator.
 
 PREDEFINED             = 
@@ -890,11 +1019,11 @@
 # doxygen's preprocessor will remove all function-like macros that are alone 
 # on a line, have an all uppercase name, and do not end with a semicolon. Such 
-# function macros are typically used for boiler-plate code, and will confuse the 
-# parser if not removed.
+# function macros are typically used for boiler-plate code, and will confuse 
+# the parser if not removed.
 
 SKIP_FUNCTION_MACROS   = YES
 
 #---------------------------------------------------------------------------
-# Configuration::addtions related to external references   
+# Configuration::additions related to external references   
 #---------------------------------------------------------------------------
 
@@ -943,8 +1072,9 @@
 
 # If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will 
-# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base or 
-# super classes. Setting the tag to NO turns the diagrams off. Note that this 
-# option is superceded by the HAVE_DOT option below. This is only a fallback. It is 
-# recommended to install and use dot, since it yields more powerful graphs.
+# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base 
+# or super classes. Setting the tag to NO turns the diagrams off. Note that 
+# this option is superseded by the HAVE_DOT option below. This is only a 
+# fallback. It is recommended to install and use dot, since it yields more 
+# powerful graphs.
 
 CLASS_DIAGRAMS         = YES
@@ -954,5 +1084,4 @@
 # or is not a class.
 
-#HIDE_UNDOC_RELATIONS   = YES
 HIDE_UNDOC_RELATIONS   = NO
 
@@ -962,5 +1091,4 @@
 # have no effect if this option is set to NO (the default)
 
-#HAVE_DOT               = NO
 HAVE_DOT               = YES
 
@@ -979,6 +1107,11 @@
 COLLABORATION_GRAPH    = YES
 
+# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen 
+# will generate a graph for groups, showing the direct groups dependencies
+
+GROUP_GRAPHS           = YES
+
 # If the UML_LOOK tag is set to YES doxygen will generate inheritance and 
-# collaboration diagrams in a style similiar to the OMG's Unified Modeling 
+# collaboration diagrams in a style similar to the OMG's Unified Modeling 
 # Language.
 
@@ -1017,4 +1150,11 @@
 GRAPHICAL_HIERARCHY    = YES
 
+# If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT tags are set to YES 
+# then doxygen will show the dependencies a directory has on other directories 
+# in a graphical way. The dependency relations are determined by the #include
+# relations between the files in the directories.
+
+DIRECTORY_GRAPH        = YES
+
 # The DOT_IMAGE_FORMAT tag can be used to set the image format of the images 
 # generated by dot. Possible values are png, jpg, or gif
@@ -1024,5 +1164,5 @@
 
 # The tag DOT_PATH can be used to specify the path where the dot tool can be 
-# found. If left blank, it is assumed the dot tool can be found on the path.
+# found. If left blank, it is assumed the dot tool can be found in the path.
 
 DOT_PATH               = 
@@ -1052,12 +1192,28 @@
 # The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the 
 # graphs generated by dot. A depth value of 3 means that only nodes reachable 
-# from the root by following a path via at most 3 edges will be shown. Nodes that 
-# lay further from the root node will be omitted. Note that setting this option to 
-# 1 or 2 may greatly reduce the computation time needed for large code bases. Also 
-# note that a graph may be further truncated if the graph's image dimensions are 
-# not sufficient to fit the graph (see MAX_DOT_GRAPH_WIDTH and MAX_DOT_GRAPH_HEIGHT). 
-# If 0 is used for the depth value (the default), the graph is not depth-constrained.
+# from the root by following a path via at most 3 edges will be shown. Nodes 
+# that lay further from the root node will be omitted. Note that setting this 
+# option to 1 or 2 may greatly reduce the computation time needed for large 
+# code bases. Also note that a graph may be further truncated if the graph's 
+# image dimensions are not sufficient to fit the graph (see MAX_DOT_GRAPH_WIDTH 
+# and MAX_DOT_GRAPH_HEIGHT). If 0 is used for the depth value (the default), 
+# the graph is not depth-constrained.
 
 MAX_DOT_GRAPH_DEPTH    = 0
+
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent 
+# background. This is disabled by default, which results in a white background. 
+# Warning: Depending on the platform used, enabling this option may lead to 
+# badly anti-aliased labels on the edges of a graph (i.e. they become hard to 
+# read).
+
+DOT_TRANSPARENT        = NO
+
+# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output 
+# files in one run (i.e. multiple -o and -T options on the command line). This 
+# makes dot run faster, but since only newer versions of dot (>1.8.10) 
+# support this, this feature is disabled by default.
+
+DOT_MULTI_TARGETS      = NO
 
 # If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will 
@@ -1074,5 +1230,5 @@
 
 #---------------------------------------------------------------------------
-# Configuration::addtions related to the search engine   
+# Configuration::additions related to the search engine   
 #---------------------------------------------------------------------------
 
