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Diffstat (limited to '4a-hal/4a-hal-controllers/4a-hal-controllers-api-loader.c')
| -rw-r--r-- | 4a-hal/4a-hal-controllers/4a-hal-controllers-api-loader.c | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/4a-hal/4a-hal-controllers/4a-hal-controllers-api-loader.c b/4a-hal/4a-hal-controllers/4a-hal-controllers-api-loader.c new file mode 100644 index 0000000..3401c93 --- /dev/null +++ b/4a-hal/4a-hal-controllers/4a-hal-controllers-api-loader.c @@ -0,0 +1,239 @@ +/* + * Copyright (C) 2016 "IoT.bzh" + * Author Jonathan Aillet <jonathan.aillet@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE + +#include <stdio.h> +#include <stdbool.h> +#include <string.h> + +#include <filescan-utils.h> +#include <wrap-json.h> + +#include <ctl-config.h> + +#include "../4a-hal-utilities/4a-hal-utilities-verbs-loader.h" +#include "../4a-hal-manager/4a-hal-manager-cb.h" + +#include "4a-hal-controllers-api-loader.h" + +// Default api to print log when apihandle not available +afb_dynapi *AFB_default; + +/******************************************************************************* + * Json parsing functions using app controller * + ******************************************************************************/ + +// Config Section definition +static CtlSectionT ctrlSections[] = +{ + [CTL_SECTION_PLUGIN] = {.key="plugins" , .loadCB= PluginConfig}, + [CTL_SECTION_ONLOAD] = {.key="onload" , .loadCB= OnloadConfig}, + [CTL_SECTION_CONTROL] = {.key="controls", .loadCB= ControlConfig}, + [CTL_SECTION_EVENT] = {.key="events" , .loadCB= EventConfig}, + + [CTL_SECTION_ENDTAG] = {.key=NULL} +}; + +/******************************************************************************* + * Dynamic HAL verbs' functions * + ******************************************************************************/ + +// Every HAL export the same API & Interface Mapping from SndCard to AudioLogic is done through alsaHalSndCardT +static struct HalUtlApiVerb CtlHalDynApiStaticVerbs[] = +{ + /* VERB'S NAME FUNCTION TO CALL SHORT DESCRIPTION */ + { .verb = "ping", .callback = HalMgrPing, .info = "Ping test for DynApi"}, + { .verb = NULL } // Marker for end of the array +}; + +/******************************************************************************* + * Dynamic API functions for app controller * + * TODO JAI : Use API-V3 instead of API-PRE-V3 * + ******************************************************************************/ + +static int HalCtlsInitOneApi(afb_dynapi *apiHandle) +{ + int apiMetadataUnpackErr, apiHalmetadataUnpackErr; + + json_object *apiMetadata, *apiHalmetadata; + + CtlConfigT *ctrlConfig; + struct SpecificHalData *currentCtlHalData; + + if(! apiHandle) + return -1; + + // Hugely hack to make all V2 AFB_DEBUG to work in fileutils + AFB_default = apiHandle; + + // Retrieve section config from api handle + ctrlConfig = (CtlConfigT *) afb_dynapi_get_userdata(apiHandle); + if(! ctrlConfig) + return -2; + + currentCtlHalData = ctrlConfig->external; + if(! currentCtlHalData) + return -3; + + // Fill SpecificHalDatadata structure + currentCtlHalData->internal = true; + currentCtlHalData->status = HAL_STATUS_UNAVAILABLE; + + if(! json_object_object_get_ex(ctrlConfig->configJ, "metadata", &apiMetadata)) + return -4; + + if(! json_object_object_get_ex(ctrlConfig->configJ, "hal-metadata", &apiHalmetadata)) + return -5; + + apiMetadataUnpackErr = wrap_json_unpack(apiMetadata, "{s:s s?:s s?:s s?:o s?:o !}", + "uid", NULL, + "version", ¤tCtlHalData->version, + "api", ¤tCtlHalData->name, + "info", NULL, + "require", NULL); + if(apiMetadataUnpackErr) + return -6; + + apiHalmetadataUnpackErr = wrap_json_unpack(apiHalmetadata, "{s:s s:s s:s !}", + "sndcard", ¤tCtlHalData->sndCard, + "author", ¤tCtlHalData->author, + "date", ¤tCtlHalData->date); + if(apiHalmetadataUnpackErr) + return -7; + + currentCtlHalData->apiHandle = apiHandle; + currentCtlHalData->ctrlConfig = ctrlConfig; + + // TODO JAI: Search for hw sndCard + // TODO JAI: Update alsa command of HalCtl to use alsa-softmixer/alsa-core data + // TODO JAI: handle refresh of hal status using /dev/snd/byId (or /dev/snd/byId) + + return CtlConfigExec(apiHandle, ctrlConfig); +} + +static int HalCtlsLoadOneApi(void *cbdata, afb_dynapi *apiHandle) +{ + int err; + CtlConfigT *ctrlConfig; + + if(! cbdata || ! apiHandle ) + return -1; + + ctrlConfig = (CtlConfigT*) cbdata; + + // Save closure as api's data context + afb_dynapi_set_userdata(apiHandle, ctrlConfig); + + // Add static controls verbs + if(HalUtlLoadStaticVerbs(apiHandle, CtlHalDynApiStaticVerbs)) { + AFB_DYNAPI_ERROR(apiHandle, "%s : load Section : fail to register static V2 verbs", __func__); + return 1; + } + + // Load section for corresponding Api + err = CtlLoadSections(apiHandle, ctrlConfig, ctrlSections); + + // Declare an event manager for this Api + afb_dynapi_on_event(apiHandle, CtrlDispatchApiEvent); + + // Init Api function (does not receive user closure ???) + afb_dynapi_on_init(apiHandle, HalCtlsInitOneApi); + + afb_dynapi_seal(apiHandle); + + return err; +} + +int HalCtlsCreateApi(afb_dynapi *apiHandle, char *path, struct HalMgrData *HalMgrGlobalData) +{ + CtlConfigT *ctrlConfig; + struct SpecificHalData *currentCtlHalData; + + if(! apiHandle || ! path || ! HalMgrGlobalData) + return -1; + + // Create one Api per file + ctrlConfig = CtlLoadMetaData(apiHandle, path); + if(! ctrlConfig) { + AFB_DYNAPI_ERROR(apiHandle, "%s: No valid control config file in:\n-- %s", __func__, path); + return -2; + } + + if(! ctrlConfig->api) { + AFB_DYNAPI_ERROR(apiHandle, "%s: API Missing from metadata in:\n-- %s", __func__, path); + return -3; + } + + currentCtlHalData = HalUtlAddHalApiToHalList(HalMgrGlobalData); + if(! currentCtlHalData) + return -4; + + ctrlConfig->external = (void *) currentCtlHalData; + + // Create one API (Pre-V3 return code ToBeChanged) + return afb_dynapi_new_api(apiHandle, ctrlConfig->api, ctrlConfig->info, 1, HalCtlsLoadOneApi, ctrlConfig); +} + +int HalCtlsCreateAllApi(afb_dynapi *apiHandle, struct HalMgrData *HalMgrGlobalData) +{ + int index, err, status; + char *dirList, *fileName, *fullPath; + char filePath[CONTROL_MAXPATH_LEN]; + + filePath[CONTROL_MAXPATH_LEN - 1] = '\0'; + + json_object *configJ, *entryJ; + + if(! apiHandle || ! HalMgrGlobalData) + return -1; + + // Hugely hack to make all V2 AFB_DEBUG to work in fileutils + AFB_default = apiHandle; + + AFB_DYNAPI_NOTICE(apiHandle, "In %s", __func__); + + dirList = getenv("CONTROL_CONFIG_PATH"); + if(! dirList) + dirList = CONTROL_CONFIG_PATH; + + configJ = CtlConfigScan(dirList, "4a"); + if(! configJ) { + AFB_DYNAPI_ERROR(apiHandle, "%s: No 4a*.json config file(s) found in %s ", __func__, dirList); + return -2; + } + + // We load 1st file others are just warnings + for(index = 0; index < json_object_array_length(configJ); index++) { + entryJ = json_object_array_get_idx(configJ, index); + + err = wrap_json_unpack(entryJ, "{s:s, s:s !}", "fullpath", &fullPath, "filename", &fileName); + if(err) { + AFB_DYNAPI_ERROR(apiHandle, "%s: HOOPs invalid JSON entry = %s", __func__, json_object_get_string(entryJ)); + return -1; + } + + strncpy(filePath, fullPath, sizeof(filePath) - 1); + strncat(filePath, "/", sizeof(filePath)); + strncat(filePath, fileName, sizeof(filePath)); + + if(HalCtlsCreateApi(apiHandle, filePath, HalMgrGlobalData) < 0) + status--; + } + + return status; +}
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