From dbb6f1e7ec9a0fb7ca077062864767d3b60ef813 Mon Sep 17 00:00:00 2001 From: Antonio Ospite Date: Wed, 7 Mar 2012 17:48:49 +0100 Subject: [PATCH] am7xxx, doc: add Doxygen documentation for the public API --- CMakeLists.txt | 1 + doc/CMakeLists.txt | 11 ++ doc/Doxyfile.in | 290 ++++++++++++++++++++++++++++++++++++++++++++++++ doc/DoxygenMainpage.dox | 40 +++++++ src/am7xxx.h | 167 ++++++++++++++++++++++++---- 5 files changed, 490 insertions(+), 19 deletions(-) create mode 100644 doc/CMakeLists.txt create mode 100644 doc/Doxyfile.in create mode 100644 doc/DoxygenMainpage.dox diff --git a/CMakeLists.txt b/CMakeLists.txt index 5d36d6c..aee9581 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -102,3 +102,4 @@ endif(GIT_FOUND) # Add library project add_subdirectory(src) +add_subdirectory(doc) diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt new file mode 100644 index 0000000..81a7c45 --- /dev/null +++ b/doc/CMakeLists.txt @@ -0,0 +1,11 @@ +# add a target to generate API documentation with Doxygen +find_package(Doxygen) +if(DOXYGEN_FOUND) + configure_file("Doxyfile.in" "Doxyfile" @ONLY IMMEDIATE) + + add_custom_target(doc + ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile + WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} + COMMENT "Generating API documentation with Doxygen" VERBATIM + ) +endif(DOXYGEN_FOUND) diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in new file mode 100644 index 0000000..a1554c4 --- /dev/null +++ b/doc/Doxyfile.in @@ -0,0 +1,290 @@ +# Doxyfile 1.7.6.1 + +#--------------------------------------------------------------------------- +# Project related configuration options +#--------------------------------------------------------------------------- +DOXYFILE_ENCODING = UTF-8 +PROJECT_NAME = @PROJECT_NAME@ +PROJECT_NUMBER = @PROJECT_APIVER@ +PROJECT_BRIEF = "@PROJECT_DESCRIPTION@" +PROJECT_LOGO = +OUTPUT_DIRECTORY = @DOC_OUTPUT_PATH@ +CREATE_SUBDIRS = NO +OUTPUT_LANGUAGE = English +BRIEF_MEMBER_DESC = YES +REPEAT_BRIEF = YES +ABBREVIATE_BRIEF = +ALWAYS_DETAILED_SEC = NO +INLINE_INHERITED_MEMB = NO +FULL_PATH_NAMES = YES +STRIP_FROM_PATH = @CMAKE_SOURCE_DIR@ +STRIP_FROM_INC_PATH = +SHORT_NAMES = NO +JAVADOC_AUTOBRIEF = YES +QT_AUTOBRIEF = NO +MULTILINE_CPP_IS_BRIEF = NO +INHERIT_DOCS = YES +SEPARATE_MEMBER_PAGES = NO +TAB_SIZE = 8 +ALIASES = +TCL_SUBST = +OPTIMIZE_OUTPUT_FOR_C = YES +OPTIMIZE_OUTPUT_JAVA = NO +OPTIMIZE_FOR_FORTRAN = NO +OPTIMIZE_OUTPUT_VHDL = NO +EXTENSION_MAPPING = +BUILTIN_STL_SUPPORT = NO +CPP_CLI_SUPPORT = NO +SIP_SUPPORT = NO +IDL_PROPERTY_SUPPORT = YES +DISTRIBUTE_GROUP_DOC = NO +SUBGROUPING = YES +INLINE_GROUPED_CLASSES = NO +INLINE_SIMPLE_STRUCTS = NO +TYPEDEF_HIDES_STRUCT = NO +SYMBOL_CACHE_SIZE = 0 +LOOKUP_CACHE_SIZE = 0 +#--------------------------------------------------------------------------- +# Build related configuration options +#--------------------------------------------------------------------------- +EXTRACT_ALL = NO +EXTRACT_PRIVATE = NO +EXTRACT_STATIC = NO +EXTRACT_LOCAL_CLASSES = NO +EXTRACT_LOCAL_METHODS = NO +EXTRACT_ANON_NSPACES = NO +HIDE_UNDOC_MEMBERS = NO +HIDE_UNDOC_CLASSES = NO +HIDE_FRIEND_COMPOUNDS = NO +HIDE_IN_BODY_DOCS = NO +INTERNAL_DOCS = NO +CASE_SENSE_NAMES = YES +HIDE_SCOPE_NAMES = NO +SHOW_INCLUDE_FILES = YES +FORCE_LOCAL_INCLUDES = NO +INLINE_INFO = YES +SORT_MEMBER_DOCS = YES +SORT_BRIEF_DOCS = NO +SORT_MEMBERS_CTORS_1ST = NO +SORT_GROUP_NAMES = NO +SORT_BY_SCOPE_NAME = NO +STRICT_PROTO_MATCHING = NO +GENERATE_TODOLIST = YES +GENERATE_TESTLIST = YES +GENERATE_BUGLIST = YES +GENERATE_DEPRECATEDLIST= YES +ENABLED_SECTIONS = +MAX_INITIALIZER_LINES = 30 +SHOW_USED_FILES = YES +SHOW_DIRECTORIES = NO +SHOW_FILES = YES +SHOW_NAMESPACES = YES +FILE_VERSION_FILTER = +LAYOUT_FILE = +CITE_BIB_FILES = +#--------------------------------------------------------------------------- +# configuration options related to warning and progress messages +#--------------------------------------------------------------------------- +QUIET = NO +WARNINGS = YES +WARN_IF_UNDOCUMENTED = YES +WARN_IF_DOC_ERROR = YES +WARN_NO_PARAMDOC = NO +WARN_FORMAT = "$file:$line: $text" +WARN_LOGFILE = +#--------------------------------------------------------------------------- +# configuration options related to the input files +#--------------------------------------------------------------------------- +INPUT = @CMAKE_CURRENT_SOURCE_DIR@/ \ + @CMAKE_SOURCE_DIR@/src/ +INPUT_ENCODING = UTF-8 +FILE_PATTERNS = *.dox \ + *.h \ + *.c +RECURSIVE = NO +EXCLUDE = +EXCLUDE_SYMLINKS = NO +EXCLUDE_PATTERNS = +EXCLUDE_SYMBOLS = +EXAMPLE_PATH = +EXAMPLE_PATTERNS = +EXAMPLE_RECURSIVE = NO +IMAGE_PATH = +INPUT_FILTER = +FILTER_PATTERNS = +FILTER_SOURCE_FILES = NO +FILTER_SOURCE_PATTERNS = +#--------------------------------------------------------------------------- +# configuration options related to source browsing +#--------------------------------------------------------------------------- +SOURCE_BROWSER = YES +INLINE_SOURCES = YES +STRIP_CODE_COMMENTS = YES +REFERENCED_BY_RELATION = NO +REFERENCES_RELATION = NO +REFERENCES_LINK_SOURCE = YES +USE_HTAGS = NO +VERBATIM_HEADERS = YES +#--------------------------------------------------------------------------- +# configuration options related to the alphabetical class index +#--------------------------------------------------------------------------- +ALPHABETICAL_INDEX = YES +COLS_IN_ALPHA_INDEX = 5 +IGNORE_PREFIX = +#--------------------------------------------------------------------------- +# configuration options related to the HTML output +#--------------------------------------------------------------------------- +GENERATE_HTML = YES +HTML_OUTPUT = html +HTML_FILE_EXTENSION = .html +HTML_HEADER = +HTML_FOOTER = +HTML_STYLESHEET = +HTML_EXTRA_FILES = +HTML_COLORSTYLE_HUE = 220 +HTML_COLORSTYLE_SAT = 100 +HTML_COLORSTYLE_GAMMA = 80 +HTML_TIMESTAMP = YES +HTML_ALIGN_MEMBERS = YES +HTML_DYNAMIC_SECTIONS = NO +GENERATE_DOCSET = NO +DOCSET_FEEDNAME = "Doxygen generated docs" +DOCSET_BUNDLE_ID = org.doxygen.Project +DOCSET_PUBLISHER_ID = org.doxygen.Publisher +DOCSET_PUBLISHER_NAME = Publisher +GENERATE_HTMLHELP = NO +CHM_FILE = +HHC_LOCATION = +GENERATE_CHI = NO +CHM_INDEX_ENCODING = +BINARY_TOC = NO +TOC_EXPAND = NO +GENERATE_QHP = NO +QCH_FILE = +QHP_NAMESPACE = org.doxygen.Project +QHP_VIRTUAL_FOLDER = doc +QHP_CUST_FILTER_NAME = +QHP_CUST_FILTER_ATTRS = +QHP_SECT_FILTER_ATTRS = +QHG_LOCATION = +GENERATE_ECLIPSEHELP = NO +ECLIPSE_DOC_ID = org.doxygen.Project +DISABLE_INDEX = NO +GENERATE_TREEVIEW = NO +ENUM_VALUES_PER_LINE = 4 +USE_INLINE_TREES = NO +TREEVIEW_WIDTH = 250 +EXT_LINKS_IN_WINDOW = NO +FORMULA_FONTSIZE = 10 +FORMULA_TRANSPARENT = YES +USE_MATHJAX = NO +MATHJAX_RELPATH = http://www.mathjax.org/mathjax +MATHJAX_EXTENSIONS = +SEARCHENGINE = YES +SERVER_BASED_SEARCH = NO +#--------------------------------------------------------------------------- +# configuration options related to the LaTeX output +#--------------------------------------------------------------------------- +GENERATE_LATEX = NO +LATEX_OUTPUT = latex +LATEX_CMD_NAME = latex +MAKEINDEX_CMD_NAME = makeindex +COMPACT_LATEX = NO +PAPER_TYPE = a4 +EXTRA_PACKAGES = +LATEX_HEADER = +LATEX_FOOTER = +PDF_HYPERLINKS = YES +USE_PDFLATEX = YES +LATEX_BATCHMODE = NO +LATEX_HIDE_INDICES = NO +LATEX_SOURCE_CODE = NO +LATEX_BIB_STYLE = plain +#--------------------------------------------------------------------------- +# configuration options related to the RTF output +#--------------------------------------------------------------------------- +GENERATE_RTF = NO +RTF_OUTPUT = rtf +COMPACT_RTF = NO +RTF_HYPERLINKS = NO +RTF_STYLESHEET_FILE = +RTF_EXTENSIONS_FILE = +#--------------------------------------------------------------------------- +# configuration options related to the man page output +#--------------------------------------------------------------------------- +GENERATE_MAN = NO +MAN_OUTPUT = man +MAN_EXTENSION = .3 +MAN_LINKS = NO +#--------------------------------------------------------------------------- +# configuration options related to the XML output +#--------------------------------------------------------------------------- +GENERATE_XML = NO +XML_OUTPUT = xml +XML_SCHEMA = +XML_DTD = +XML_PROGRAMLISTING = YES +#--------------------------------------------------------------------------- +# configuration options for the AutoGen Definitions output +#--------------------------------------------------------------------------- +GENERATE_AUTOGEN_DEF = NO +#--------------------------------------------------------------------------- +# configuration options related to the Perl module output +#--------------------------------------------------------------------------- +GENERATE_PERLMOD = NO +PERLMOD_LATEX = NO +PERLMOD_PRETTY = YES +PERLMOD_MAKEVAR_PREFIX = +#--------------------------------------------------------------------------- +# Configuration options related to the preprocessor +#--------------------------------------------------------------------------- +ENABLE_PREPROCESSING = YES +MACRO_EXPANSION = NO +EXPAND_ONLY_PREDEF = NO +SEARCH_INCLUDES = YES +INCLUDE_PATH = +INCLUDE_FILE_PATTERNS = +PREDEFINED = +EXPAND_AS_DEFINED = +SKIP_FUNCTION_MACROS = YES +#--------------------------------------------------------------------------- +# Configuration::additions related to external references +#--------------------------------------------------------------------------- +TAGFILES = +GENERATE_TAGFILE = +ALLEXTERNALS = NO +EXTERNAL_GROUPS = YES +PERL_PATH = /usr/bin/perl +#--------------------------------------------------------------------------- +# Configuration options related to the dot tool +#--------------------------------------------------------------------------- +CLASS_DIAGRAMS = NO +MSCGEN_PATH = +HIDE_UNDOC_RELATIONS = YES +HAVE_DOT = NO +DOT_NUM_THREADS = 0 +DOT_FONTNAME = Helvetica +DOT_FONTSIZE = 10 +DOT_FONTPATH = +CLASS_GRAPH = YES +COLLABORATION_GRAPH = YES +GROUP_GRAPHS = YES +UML_LOOK = NO +TEMPLATE_RELATIONS = NO +INCLUDE_GRAPH = YES +INCLUDED_BY_GRAPH = YES +CALL_GRAPH = NO +CALLER_GRAPH = NO +GRAPHICAL_HIERARCHY = YES +DIRECTORY_GRAPH = YES +DOT_IMAGE_FORMAT = png +INTERACTIVE_SVG = NO +DOT_PATH = +DOTFILE_DIRS = +MSCFILE_DIRS = +DOT_GRAPH_MAX_NODES = 50 +MAX_DOT_GRAPH_DEPTH = 0 +DOT_TRANSPARENT = NO +DOT_MULTI_TARGETS = YES +GENERATE_LEGEND = YES +DOT_CLEANUP = YES diff --git a/doc/DoxygenMainpage.dox b/doc/DoxygenMainpage.dox new file mode 100644 index 0000000..0d0cd62 --- /dev/null +++ b/doc/DoxygenMainpage.dox @@ -0,0 +1,40 @@ +/** +@mainpage libam7xxx + +@author Antonio Ospite +@copyright GNU General Public License version 2. + +Website: http://git.ao2.it/libam7xxx.git + +@section libam7xxxIntro Introduction + +libam7xxx is an Open Source library to communicate via USB with projectors and +Digital Picture Frames based on the Actions Micro AM7XXX family if ICs. + +libam7xxx makes it possible to use these devices as USB displays on +non-Windows Operating Systems like GNU/Linux or Android/Linux just to name +a few, and on non-PC platforms like for instance mobile phones, tablets or +game consoles. + +@section libam7xxxSupportedDevices Supported Devices + +- Acer C110 +- Philips/SagemCom PicoPix 1020 + +@section libam7xxxDesignOverview Design Overview + +libam7xxx provides access to devices via two structs: + +- A context, which manages aspects of thread safety when using + multiple devices on multiple threads. +- A device, which talks to the hardware and manages transfers and configuration. + +Either or both of these structs are passed to the functions in order +to interact with the hardware. The USB access is handled by +libusb-1.0, which should work in a mostly non-blocking fashion across +all platforms (see function documentation for specifics). + +The API and the project structure has been inspired by +libfreenect. + +*/ diff --git a/src/am7xxx.h b/src/am7xxx.h index c86f1b9..4fe9b00 100644 --- a/src/am7xxx.h +++ b/src/am7xxx.h @@ -16,6 +16,11 @@ * along with this program. If not, see . */ +/** + * @file + * Public libam7xxx API. + */ + #ifndef __AM7XXX_H #define __AM7XXX_H @@ -24,54 +29,171 @@ extern "C" { #endif +/** + * @typedef am7xxx_context + * + * An opaque data type representing a context. + */ struct _am7xxx_context; typedef struct _am7xxx_context am7xxx_context; +/** + * @typedef am7xxx_device + * + * An opaque data type representing an am7xxx device. + */ struct _am7xxx_device; typedef struct _am7xxx_device am7xxx_device; +/** + * A struct describing device specific properties. + * + * A user program may want to inspect these before providing data to the + * device. For instance, when sending an image the user may want to rescale it + * to the device native width and height in order to be sure the image will be + * displayed in its entirety. + */ typedef struct { - unsigned int native_width; - unsigned int native_height; + unsigned int native_width; /**< The device native width. */ + unsigned int native_height; /**< The device native height. */ } am7xxx_device_info; +/** + * The verbosity level of logging messages. + * + * This can be set with am7xxx_set_log_level() and the level will be used + * internally by libam7xxx to adjust the granularity of the information + * exposed to the user about the internal library operations. + */ typedef enum { - AM7XXX_LOG_FATAL = 0, - AM7XXX_LOG_ERROR = 1, - AM7XXX_LOG_WARNING = 2, - AM7XXX_LOG_INFO = 3, - AM7XXX_LOG_DEBUG = 4, - AM7XXX_LOG_TRACE = 5, + AM7XXX_LOG_FATAL = 0, /**< Fatal messages, the user application should stop if it gets one of this. */ + AM7XXX_LOG_ERROR = 1, /**< Error messages, typically they describe API functions failures. */ + AM7XXX_LOG_WARNING = 2, /**< Warnings about conditions worth mentioning to the user. */ + AM7XXX_LOG_INFO = 3, /**< Informations about the device operations. */ + AM7XXX_LOG_DEBUG = 4, /**< Informations about the library internals. */ + AM7XXX_LOG_TRACE = 5, /**< Verbose informations about the communication with the hardware. */ } am7xxx_log_level; +/** + * The image formats accepted by the device. + */ typedef enum { - AM7XXX_IMAGE_FORMAT_JPEG = 1, - AM7XXX_IMAGE_FORMAT_NV12 = 2, + AM7XXX_IMAGE_FORMAT_JPEG = 1, /**< JPEG format. */ + AM7XXX_IMAGE_FORMAT_NV12 = 2, /**< Raw YUV in the NV12 variant. */ } am7xxx_image_format; +/** + * The device power modes. + * + * An am7xxx device can operate in several power modes. A certain power mode + * may have effect on the display brightness or on the device power + * consumption. + * + * @note Most am7xxx devices come with a Y-shaped USB cable with a Master and + * a Slave connector, higher power modes may require that both connectors are + * plugged in to the host system for the device to work properly. + * + * @note At higher power modes some devices may use a fan to cool down the + * internal hardware components, and hence may be noisier in this case. + */ typedef enum { - AM7XXX_POWER_OFF = 0, - AM7XXX_POWER_LOW = 1, - AM7XXX_POWER_MIDDLE = 2, - AM7XXX_POWER_HIGH = 3, - AM7XXX_POWER_TURBO = 4, + AM7XXX_POWER_OFF = 0, /**< Display is powered off, no image shown. */ + AM7XXX_POWER_LOW = 1, /**< Low power consumption but also low brightness. */ + AM7XXX_POWER_MIDDLE = 2, /**< Middle level of brightness. */ + AM7XXX_POWER_HIGH = 3, /**< More brightness, but more power consumption. */ + AM7XXX_POWER_TURBO = 4, /**< Max brightness and power consumprion. This may need both the Master and Slave USB connectors plugged. */ } am7xxx_power_mode; +/** + * Initialize the library context and data structures, and scan for devices. + * + * @param[out] ctx A pointer to the context the library will be used in. + * + * @return 0 on success, a negative value on error + */ int am7xxx_init(am7xxx_context **ctx); +/** + * Cleanup the library data structures and free the context. + * + * @param[in,out] ctx The context to free. + */ void am7xxx_shutdown(am7xxx_context *ctx); +/** + * Set verbosity level of log messages. + * + * @note The level is per-context. + * + * @note Messages of level AM7XXX_LOG_FATAL are always shown, regardless + * of the value of the log_level parameter. + * + * @param[in] ctx The context to set the log level for + * @param[in] log_level The verbosity level to use in the context (see @link am7xxx_log_level @endlink) + */ void am7xxx_set_log_level(am7xxx_context *ctx, am7xxx_log_level log_level); +/** + * Open an am7xxx_device according to a index. + * + * The semantics of the 'device_index' argument follows the order + * of the devices as found when scanning the bus at am7xxx_init() time. + * + * @note When the user tries to open a device already opened the function + * returns -EBUSY and the device is left open. + * + * @param[in] ctx The context to open the device in + * @param[out] dev A pointer to the structure representing the device to open + * @param[in] device_index The index of the device on the bus + * + * @return 0 on success, a negative value on error + */ int am7xxx_open_device(am7xxx_context *ctx, am7xxx_device **dev, unsigned int device_index); +/** + * Close an am7xxx_device. + * + * Close an am7xxx_device so that it becomes available for some other + * user/process to open it. + * + * @param[in] dev A pointer to the structure representing the device to close + * + * @return 0 on success, a negative value on error + */ int am7xxx_close_device(am7xxx_device *dev); +/** + * Get info about an am7xxx device. + * + * Get information about a device, in the form of a + * @link am7xxx_device_info @endlink structure. + * + * @param[in] dev A pointer to the structure representing the device to get info of + * @param[out] device_info A pointer to the structure where to store the device info (see @link am7xxx_device_info @endlink) + * + * @return 0 on success, a negative value on error + */ int am7xxx_get_device_info(am7xxx_device *dev, am7xxx_device_info *device_info); +/** + * Send an image for display on a am7xxx device. + * + * This is the function that actually makes the device display something. + * Static pictures can be sent just once and the device will keep showing them + * until another image get sent or some command resets or turns off the display. + * + * @param[in] dev A pointer to the structure representing the device to get info of + * @param[in] format The format the image is in (see @link am7xxx_image_format @endlink enum) + * @param[in] width The width of the image + * @param[in] height The height of the image + * @param[in] image A buffer holding data in the format specified by the format parameter + * @param[in] image_size The size in bytes of the image buffer + * + * @return 0 on success, a negative value on error + */ int am7xxx_send_image(am7xxx_device *dev, am7xxx_image_format format, unsigned int width, @@ -79,11 +201,18 @@ int am7xxx_send_image(am7xxx_device *dev, unsigned char *image, unsigned int image_size); -/* - * NOTE: if we set the mode to AM7XXX_POWER_OFF we can't turn the - * display on again by using only am7xxx_set_power_mode(). +/** + * Set the power mode of an am7xxx device. + * + * \note If we set the mode to AM7XXX_POWER_OFF we can't turn the + * display on again by using only am7xxx_set_power_mode(). This needs to be + * investigated, maybe some other command can reset the device. + * + * @param[in] dev A pointer to the structure representing the device to get info of + * @param[in] mode The power mode to put the device in (see @link am7xxx_power_mode @endlink enum) + * + * @return 0 on success, a negative value on error * - * Remember to mention that when writing the API doc. */ int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode mode); -- 2.1.4