diff options
Diffstat (limited to 'ahl-binding/ahl-binding.cpp')
| -rw-r--r-- | ahl-binding/ahl-binding.cpp | 352 |
1 files changed, 203 insertions, 149 deletions
diff --git a/ahl-binding/ahl-binding.cpp b/ahl-binding/ahl-binding.cpp index f3b1ae8..af1ae79 100644 --- a/ahl-binding/ahl-binding.cpp +++ b/ahl-binding/ahl-binding.cpp @@ -28,69 +28,104 @@ ahl_binding_t::ahl_binding_t() } /** - * @brief Get the singleton instance. - * @return The unique instance. + * @brief Creates static verbs. */ -ahl_binding_t& ahl_binding_t::instance() +void ahl_binding_t::load_static_verbs() { - static ahl_binding_t s; - return s; + if (afb_api_add_verb( + handle_, + "get_roles", + "Retrieve array of available audio roles", + ahl_api_get_roles, + nullptr, + nullptr, + AFB_SESSION_NONE_X2, 0)) + { + throw std::runtime_error("Failed to add 'get_role' verb to the API."); + } + + if (afb_api_add_verb( + handle_, + "subscribe", + "Subscribe to \"volume_changed\" event", + ahl_api_subscribe, + nullptr, + nullptr, + AFB_SESSION_NONE_X2, 0)) + { + throw std::runtime_error("Failed to add 'subscribe' verb to the API."); + } + + if (afb_api_add_verb( + handle_, + "unsubscribe", + "Unsubscribe to \"volume_changed\" event", + ahl_api_unsubscribe, + nullptr, + nullptr, + AFB_SESSION_NONE_X2, 0)) + { + throw std::runtime_error("Failed to add 'unsubscribe' verb to the API."); + } } /** - * @brief This method is called during the pre-init phase of loading the binding. - * @param[in] handle Handle to the api. - * @return Status code, zero if success. + * @brief Find all controller's configuration files. */ -int ahl_binding_t::preinit(afb_api_t handle) +void ahl_binding_t::load_controller_configs() { - handle_ = handle; + char* dir_list = getenv("CONTROL_CONFIG_PATH"); + if (!dir_list) dir_list = strdup(CONTROL_CONFIG_PATH); + struct json_object* config_files = CtlConfigScan(dir_list, "policy"); + if (!config_files) throw std::runtime_error("No config files found!"); - try + // Only one file should be found this way, but read all just in case + size_t config_files_count = json_object_array_length(config_files); + for(int i = 0; i < config_files_count; ++i) { - load_static_verbs(); - load_controller_configs(); - - if (afb_api_on_event(handle_, ahl_api_on_event)) - throw std::runtime_error("Failed to register event handler callback."); + config_entry_t file {json_object_array_get_idx(config_files, i)}; - if (afb_api_on_init(handle_, ahl_api_init)) - throw std::runtime_error("Failed to register init handler callback."); - } - catch(std::exception& e) - { - AFB_API_ERROR(handle, "%s", e.what()); - return -1; + if(load_controller_config(file.filepath()) < 0) + { + std::stringstream ss; + ss << "Failed to load config file '" + << file.filename() + << "' from '" + << file.fullpath() + << "'!"; + throw std::runtime_error(ss.str()); + } } - - return 0; } /** - * @brief Initialize the API. + * @brief Load a controller's configuration. + * @param[in] path File to load. + * @return Zero on success, non-zero otherwise. */ -int ahl_binding_t::init() +int ahl_binding_t::load_controller_config(const std::string& path) { - using namespace std::placeholders; + CtlConfigT* controller_config; - if (afb_api_require_api(handle_, HAL_MGR_API, 1)) + controller_config = CtlLoadMetaData(handle_, path.c_str()); + if (!controller_config) { - AFB_API_ERROR(handle_, "Failed to require '%s' API!", HAL_MGR_API); + AFB_API_ERROR(handle_, "Failed to load controller from config file!"); return -1; } - AFB_API_NOTICE(handle_, "Required '%s' API found!", HAL_MGR_API); - afb_api_seal(handle_); - AFB_API_NOTICE(handle_, "API is now sealed!"); + static CtlSectionT controller_sections[] = + { + {.key = "plugins", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = PluginConfig, .handle = nullptr, .actions = nullptr}, + {.key = "onload", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = OnloadConfig, .handle = nullptr, .actions = nullptr}, + {.key = "controls", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = ControlConfig, .handle = nullptr, .actions = nullptr}, + {.key = "events", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = EventConfig, .handle = nullptr, .actions = nullptr}, + {.key = "roles", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = ahl_api_config_roles, .handle = nullptr, .actions = nullptr }, + {.key = nullptr, .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = nullptr, .handle = nullptr, .actions = nullptr} + }; - volume_changed_ = afb_api_make_event(handle_, "volume_changed"); - if(!afb_event_is_valid(volume_changed_)) - { - AFB_API_ERROR(handle_, "Failed to create the \"volume_changed\" event!"); - return -2; - } + CtlLoadSections(handle_, controller_config, controller_sections); - if (update_streams()) return -1; return 0; } @@ -189,102 +224,148 @@ void ahl_binding_t::update_stream(std::string halname, std::string stream, std:: } } -void ahl_binding_t::event(std::string name, json_object* arg) +/** + * @brief Create a verb based on a role. + * @param[in] r Role to create a verb for. + * @return Zero on success, non-zero otherwise. + */ +int ahl_binding_t::create_api_verb(role_t* r) { - AFB_API_DEBUG(handle_, "Event '%s' received with the following arg: %s", name.c_str(), json_object_to_json_string(arg)); -} + AFB_API_NOTICE(handle_, "New audio role: %s", r->uid().c_str()); -void ahl_binding_t::load_static_verbs() -{ if (afb_api_add_verb( - handle_, - "get_roles", - "Retrieve array of available audio roles", - ahl_api_get_roles, - nullptr, - nullptr, - AFB_SESSION_NONE_X2, 0)) + handle_, + r->uid().c_str(), + r->description().c_str(), + ahl_api_role, + r, + nullptr, + AFB_SESSION_NONE_X2, 0)) { - throw std::runtime_error("Failed to add 'get_role' verb to the API."); + AFB_API_ERROR(handle_, "Failed to add '%s' verb to the API.", + r->uid().c_str()); + return -1; } - if (afb_api_add_verb( - handle_, - "subscribe", - "Subscribe to \"volume_changed\" event", - ahl_api_subscribe, - nullptr, - nullptr, - AFB_SESSION_NONE_X2, 0)) - { - throw std::runtime_error("Failed to add 'subscribe' verb to the API."); - } + return 0; +} - if (afb_api_add_verb( - handle_, - "unsubscribe", - "Unsubscribe to \"volume_changed\" event", - ahl_api_unsubscribe, - nullptr, - nullptr, - AFB_SESSION_NONE_X2, 0)) - { - throw std::runtime_error("Failed to add 'unsubscribe' verb to the API."); - } +/** + * @brief Get the singleton instance. + * @return The unique instance. + */ +ahl_binding_t& ahl_binding_t::instance() +{ + static ahl_binding_t s; + return s; } -void ahl_binding_t::load_controller_configs() +/** + * @brief Get the api handle. + * @return The api handle. + */ +afb_api_t ahl_binding_t::handle() const { - char* dir_list = getenv("CONTROL_CONFIG_PATH"); - if (!dir_list) dir_list = strdup(CONTROL_CONFIG_PATH); - struct json_object* config_files = CtlConfigScan(dir_list, "policy"); - if (!config_files) throw std::runtime_error("No config files found!"); + return handle_; +} - // Only one file should be found this way, but read all just in case - size_t config_files_count = json_object_array_length(config_files); - for(int i = 0; i < config_files_count; ++i) +/** + * @brief Get the role list. + * @return A vector of roles. + */ +const std::vector<role_t> ahl_binding_t::roles() const +{ + return roles_; +} + + +/** + * @brief This method is called during the pre-init phase of loading the binding. + * @param[in] handle Handle to the api. + * @return Status code, zero if success. + */ +int ahl_binding_t::preinit(afb_api_t handle) +{ + handle_ = handle; + + try { - config_entry_t file {json_object_array_get_idx(config_files, i)}; + load_static_verbs(); + load_controller_configs(); - if(load_controller_config(file.filepath()) < 0) - { - std::stringstream ss; - ss << "Failed to load config file '" - << file.filename() - << "' from '" - << file.fullpath() - << "'!"; - throw std::runtime_error(ss.str()); - } + if (afb_api_on_event(handle_, ahl_api_on_event)) + throw std::runtime_error("Failed to register event handler callback."); + + if (afb_api_on_init(handle_, ahl_api_init)) + throw std::runtime_error("Failed to register init handler callback."); + } + catch(std::exception& e) + { + AFB_API_ERROR(handle, "%s", e.what()); + return -1; } + + return 0; } -int ahl_binding_t::load_controller_config(const std::string& path) +/** + * @brief Initialize the API. + */ +int ahl_binding_t::init() { - CtlConfigT* controller_config; + using namespace std::placeholders; - controller_config = CtlLoadMetaData(handle_, path.c_str()); - if (!controller_config) + if (afb_api_require_api(handle_, HAL_MGR_API, 1)) { - AFB_API_ERROR(handle_, "Failed to load controller from config file!"); + AFB_API_ERROR(handle_, "Failed to require '%s' API!", HAL_MGR_API); return -1; } + AFB_API_NOTICE(handle_, "Required '%s' API found!", HAL_MGR_API); - static CtlSectionT controller_sections[] = - { - {.key = "plugins", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = PluginConfig, .handle = nullptr, .actions = nullptr}, - {.key = "onload", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = OnloadConfig, .handle = nullptr, .actions = nullptr}, - {.key = "controls", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = ControlConfig, .handle = nullptr, .actions = nullptr}, - {.key = "events", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = EventConfig, .handle = nullptr, .actions = nullptr}, - {.key = "roles", .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = ahl_api_config_roles, .handle = nullptr, .actions = nullptr }, - {.key = nullptr, .uid = nullptr, .info = nullptr, .prefix = nullptr, .loadCB = nullptr, .handle = nullptr, .actions = nullptr} - }; + afb_api_seal(handle_); + AFB_API_NOTICE(handle_, "API is now sealed!"); - CtlLoadSections(handle_, controller_config, controller_sections); + volume_changed_ = afb_api_make_event(handle_, "volume_changed"); + if(!afb_event_is_valid(volume_changed_)) + { + AFB_API_ERROR(handle_, "Failed to create the \"volume_changed\" event!"); + return -2; + } + if (update_streams()) return -1; return 0; } +/** + * @brief Called when an event is received by this binding. + * @param[in] name Event's name. + * @param[in] arg Event's argument. + */ +void ahl_binding_t::event(std::string name, json_object* arg) +{ + AFB_API_DEBUG(handle_, "Event '%s' received with the following arg: %s", name.c_str(), json_object_to_json_string(arg)); +} + +/** + * @brief Emit the 'volume-changed' event. + * @param[in] role Role's uid. + * @param[in] volume New volume. + * @return Zero on success, non-zero otherwise. + */ +int ahl_binding_t::emit_volume_changed(const std::string& role, int volume) const +{ + json_object* data = json_object_new_object(); + json_object_object_add(data, "role", json_object_new_string(role.c_str())); + json_object_object_add(data, "volume", json_object_new_int(volume)); + + return afb_event_push(volume_changed_, data); +} + +/** + * @brief Parse the role configuration section. + * @param[in] o Role's section. + * @return Zero on success, non-zero otherwise. + */ int ahl_binding_t::parse_roles_config(json_object* o) { assert(o != nullptr); @@ -308,27 +389,12 @@ int ahl_binding_t::parse_roles_config(json_object* o) return 0; } -int ahl_binding_t::create_api_verb(role_t* r) -{ - AFB_API_NOTICE(handle_, "New audio role: %s", r->uid().c_str()); - - if (afb_api_add_verb( - handle_, - r->uid().c_str(), - r->description().c_str(), - ahl_api_role, - r, - nullptr, - AFB_SESSION_NONE_X2, 0)) - { - AFB_API_ERROR(handle_, "Failed to add '%s' verb to the API.", - r->uid().c_str()); - return -1; - } - - return 0; -} +// ---------- Callbacks to verbs ---------- +/** + * @brief Get the roles list. + * @param[in] req Request to answer. + */ void ahl_binding_t::get_roles(afb_req_t req) const { json_bool verbose = FALSE; @@ -349,6 +415,10 @@ void ahl_binding_t::get_roles(afb_req_t req) const afb_req_success(req, result, nullptr); } +/** + * @brief Subscribe to events. + * @param[in] req Request to answer. + */ void ahl_binding_t::subscribe(afb_req_t req) const { if (afb_req_subscribe(req, volume_changed_)) @@ -356,7 +426,10 @@ void ahl_binding_t::subscribe(afb_req_t req) const else afb_req_success(req, nullptr, "Subscribed to \"volume_changed\" event!"); } - +/** + * @brief Unsubscribe to events. + * @param[in] req Request to answer. + */ void ahl_binding_t::unsubscribe(afb_req_t req) const { if (afb_req_unsubscribe(req, volume_changed_)) @@ -364,22 +437,3 @@ void ahl_binding_t::unsubscribe(afb_req_t req) const else afb_req_success(req, nullptr, "Unsubscribed from \"volume_changed\" event!"); } - -int ahl_binding_t::emit_volume_changed(const std::string& role, int volume) const -{ - json_object* data = json_object_new_object(); - json_object_object_add(data, "role", json_object_new_string(role.c_str())); - json_object_object_add(data, "volume", json_object_new_int(volume)); - - return afb_event_push(volume_changed_, data); -} - -const std::vector<role_t> ahl_binding_t::roles() const -{ - return roles_; -} - -afb_api_t ahl_binding_t::handle() const -{ - return handle_; -} |