diff options
| -rw-r--r-- | src/libcamera/media_device.cpp | 356 |
1 files changed, 178 insertions, 178 deletions
diff --git a/src/libcamera/media_device.cpp b/src/libcamera/media_device.cpp index fd5a3174..4c77d378 100644 --- a/src/libcamera/media_device.cpp +++ b/src/libcamera/media_device.cpp @@ -71,38 +71,6 @@ MediaDevice::~MediaDevice() } /** - * \fn MediaDevice::driver() - * \brief Retrieve the media device driver name - * \return The name of the kernel driver that handles the MediaDevice - */ - -/** - * \fn MediaDevice::devnode() - * \brief Retrieve the media device device node path - * \return The MediaDevice devnode path - */ - -/** - * \brief Delete all media objects in the MediaDevice. - * - * Delete all MediaEntities; entities will then delete their pads, - * and each source pad will delete links. - * - * After this function has been called, the media graph will be unpopulated - * and its media objects deleted. The media device has to be populated - * before it could be used again. - */ -void MediaDevice::clear() -{ - for (auto const &o : objects_) - delete o.second; - - objects_.clear(); - entities_.clear(); - valid_ = false; -} - -/** * \brief Open a media device and retrieve informations from it * * The function fails if the media device is already open or if either @@ -155,152 +123,6 @@ void MediaDevice::close() } /** - * \fn MediaDevice::entities() - * \brief Retrieve the list of entities in the media graph - * \return The list of MediaEntities registered in the MediaDevice - */ - -/* - * Add a new object to the global objects pool and fail if the object - * has already been registered. - */ -bool MediaDevice::addObject(MediaObject *obj) -{ - - if (objects_.find(obj->id()) != objects_.end()) { - LOG(Error) << "Element with id " << obj->id() - << " already enumerated."; - return false; - } - - objects_[obj->id()] = obj; - - return true; -} - -/* - * MediaObject pool lookup by id. - */ -MediaObject *MediaDevice::object(unsigned int id) -{ - auto it = objects_.find(id); - return (it == objects_.end()) ? nullptr : it->second; -} - -/** - * \brief Return the MediaEntity with name \a name - * \param name The entity name - * \return The entity with \a name - * \return nullptr if no entity with \a name is found - */ -MediaEntity *MediaDevice::getEntityByName(const std::string &name) -{ - for (MediaEntity *e : entities_) - if (e->name() == name) - return e; - - return nullptr; -} - -bool MediaDevice::populateLinks(const struct media_v2_topology &topology) -{ - media_v2_link *mediaLinks = reinterpret_cast<media_v2_link *> - (topology.ptr_links); - - for (unsigned int i = 0; i < topology.num_links; ++i) { - /* - * Skip links between entities and interfaces: we only care - * about pad-2-pad links here. - */ - if ((mediaLinks[i].flags & MEDIA_LNK_FL_LINK_TYPE) == - MEDIA_LNK_FL_INTERFACE_LINK) - continue; - - /* Store references to source and sink pads in the link. */ - unsigned int source_id = mediaLinks[i].source_id; - MediaPad *source = dynamic_cast<MediaPad *> - (object(source_id)); - if (!source) { - LOG(Error) << "Failed to find pad with id: " - << source_id; - return false; - } - - unsigned int sink_id = mediaLinks[i].sink_id; - MediaPad *sink = dynamic_cast<MediaPad *> - (object(sink_id)); - if (!sink) { - LOG(Error) << "Failed to find pad with id: " - << sink_id; - return false; - } - - MediaLink *link = new MediaLink(&mediaLinks[i], source, sink); - if (!addObject(link)) { - delete link; - return false; - } - - source->addLink(link); - sink->addLink(link); - } - - return true; -} - -bool MediaDevice::populatePads(const struct media_v2_topology &topology) -{ - media_v2_pad *mediaPads = reinterpret_cast<media_v2_pad *> - (topology.ptr_pads); - - for (unsigned int i = 0; i < topology.num_pads; ++i) { - unsigned int entity_id = mediaPads[i].entity_id; - - /* Store a reference to this MediaPad in entity. */ - MediaEntity *mediaEntity = dynamic_cast<MediaEntity *> - (object(entity_id)); - if (!mediaEntity) { - LOG(Error) << "Failed to find entity with id: " - << entity_id; - return false; - } - - MediaPad *pad = new MediaPad(&mediaPads[i], mediaEntity); - if (!addObject(pad)) { - delete pad; - return false; - } - - mediaEntity->addPad(pad); - } - - return true; -} - -/* - * For each entity in the media graph create a MediaEntity and store a - * reference in the MediaObject global pool and in the global vector of - * entities. - */ -bool MediaDevice::populateEntities(const struct media_v2_topology &topology) -{ - media_v2_entity *mediaEntities = reinterpret_cast<media_v2_entity *> - (topology.ptr_entities); - - for (unsigned int i = 0; i < topology.num_entities; ++i) { - MediaEntity *entity = new MediaEntity(&mediaEntities[i]); - if (!addObject(entity)) { - delete entity; - return false; - } - - entities_.push_back(entity); - } - - return true; -} - -/** * \brief Populate the media graph with media objects * * This function enumerates all media objects in the media device graph and @@ -381,14 +203,192 @@ int MediaDevice::populate() */ /** + * \fn MediaDevice::driver() + * \brief Retrieve the media device driver name + * \return The name of the kernel driver that handles the MediaDevice + */ + +/** + * \fn MediaDevice::devnode() + * \brief Retrieve the media device device node path + * \return The MediaDevice devnode path + */ + +/** + * \fn MediaDevice::entities() + * \brief Retrieve the list of entities in the media graph + * \return The list of MediaEntities registered in the MediaDevice + */ + +/** + * \brief Return the MediaEntity with name \a name + * \param name The entity name + * \return The entity with \a name + * \return nullptr if no entity with \a name is found + */ +MediaEntity *MediaDevice::getEntityByName(const std::string &name) +{ + for (MediaEntity *e : entities_) + if (e->name() == name) + return e; + + return nullptr; +} + +/** * \var MediaDevice::objects_ * \brief Global map of media objects (entities, pads, links) keyed by their * object id. */ +/* + * MediaObject pool lookup by id. + */ +MediaObject *MediaDevice::object(unsigned int id) +{ + auto it = objects_.find(id); + return (it == objects_.end()) ? nullptr : it->second; +} + +/* + * Add a new object to the global objects pool and fail if the object + * has already been registered. + */ +bool MediaDevice::addObject(MediaObject *obj) +{ + + if (objects_.find(obj->id()) != objects_.end()) { + LOG(Error) << "Element with id " << obj->id() + << " already enumerated."; + return false; + } + + objects_[obj->id()] = obj; + + return true; +} + +/** + * \brief Delete all media objects in the MediaDevice. + * + * Delete all MediaEntities; entities will then delete their pads, + * and each source pad will delete links. + * + * After this function has been called, the media graph will be unpopulated + * and its media objects deleted. The media device has to be populated + * before it could be used again. + */ +void MediaDevice::clear() +{ + for (auto const &o : objects_) + delete o.second; + + objects_.clear(); + entities_.clear(); + valid_ = false; +} + /** * \var MediaDevice::entities_ * \brief Global list of media entities in the media graph */ +/* + * For each entity in the media graph create a MediaEntity and store a + * reference in the MediaObject global pool and in the global vector of + * entities. + */ +bool MediaDevice::populateEntities(const struct media_v2_topology &topology) +{ + media_v2_entity *mediaEntities = reinterpret_cast<media_v2_entity *> + (topology.ptr_entities); + + for (unsigned int i = 0; i < topology.num_entities; ++i) { + MediaEntity *entity = new MediaEntity(&mediaEntities[i]); + if (!addObject(entity)) { + delete entity; + return false; + } + + entities_.push_back(entity); + } + + return true; +} + +bool MediaDevice::populatePads(const struct media_v2_topology &topology) +{ + media_v2_pad *mediaPads = reinterpret_cast<media_v2_pad *> + (topology.ptr_pads); + + for (unsigned int i = 0; i < topology.num_pads; ++i) { + unsigned int entity_id = mediaPads[i].entity_id; + + /* Store a reference to this MediaPad in entity. */ + MediaEntity *mediaEntity = dynamic_cast<MediaEntity *> + (object(entity_id)); + if (!mediaEntity) { + LOG(Error) << "Failed to find entity with id: " + << entity_id; + return false; + } + + MediaPad *pad = new MediaPad(&mediaPads[i], mediaEntity); + if (!addObject(pad)) { + delete pad; + return false; + } + + mediaEntity->addPad(pad); + } + + return true; +} + +bool MediaDevice::populateLinks(const struct media_v2_topology &topology) +{ + media_v2_link *mediaLinks = reinterpret_cast<media_v2_link *> + (topology.ptr_links); + + for (unsigned int i = 0; i < topology.num_links; ++i) { + /* + * Skip links between entities and interfaces: we only care + * about pad-2-pad links here. + */ + if ((mediaLinks[i].flags & MEDIA_LNK_FL_LINK_TYPE) == + MEDIA_LNK_FL_INTERFACE_LINK) + continue; + + /* Store references to source and sink pads in the link. */ + unsigned int source_id = mediaLinks[i].source_id; + MediaPad *source = dynamic_cast<MediaPad *> + (object(source_id)); + if (!source) { + LOG(Error) << "Failed to find pad with id: " + << source_id; + return false; + } + + unsigned int sink_id = mediaLinks[i].sink_id; + MediaPad *sink = dynamic_cast<MediaPad *> + (object(sink_id)); + if (!sink) { + LOG(Error) << "Failed to find pad with id: " + << sink_id; + return false; + } + + MediaLink *link = new MediaLink(&mediaLinks[i], source, sink); + if (!addObject(link)) { + delete link; + return false; + } + + source->addLink(link); + sink->addLink(link); + } + + return true; +} + } /* namespace libcamera */ |