1 files changed, 243 insertions, 0 deletions
diff --git a/4a-hal/4a-internals-hal/4a-internals-hal-api-loader.c b/4a-hal/4a-internals-hal/4a-internals-hal-api-loader.c
new file mode 100644
index 0000000..94891b8
--- /dev/null
+++ b/4a-hal/4a-internals-hal/4a-internals-hal-api-loader.c
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2018 "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 <string.h>
+
+#include <filescan-utils.h>
+#include <wrap-json.h>
+
+#include <afb/afb-binding.h>
+
+#include <ctl-config.h>
+
+#include "4a-hal-utilities-verbs-loader.h"
+#include "4a-internals-hal-api-loader.h"
+#include "4a-internals-hal-alsacore-link.h"
+#include "4a-internals-hal-cb.h"
+#include "4a-internals-hal-mixer-link.h"
+
+// Default api to print log when apihandle not available
+afb_api_t AFB_default;
+
+/*******************************************************************************
+ *		Json parsing functions using controller			       *
+ ******************************************************************************/
+
+// Config Section definition
+static CtlSectionT ctrlSectionsDefault[] =
+{
+	{ .key = "resources",		.loadCB = PluginConfig },
+	{ .key = "halmixer",		.loadCB = InternalHalHalMixerConfig },
+	{ .key = "onload",		.loadCB = OnloadConfig },
+	{ .key = "controls",		.loadCB = ControlConfig },
+	{ .key = "events",		.loadCB = EventConfig },
+	{ .key = "halmap",		.loadCB = InternalHalHalMapConfig },
+	{ .key = NULL }
+};
+
+/*******************************************************************************
+ *		Dynamic HAL verbs' functions				       *
+ ******************************************************************************/
+
+// Every HAL export the same API & Interface Mapping from SndCard to AudioLogic is done through alsaHalSndCardT
+static afb_verb_t InternalHalApiStaticVerbs[] =
+{
+	/* VERB'S NAME			FUNCTION TO CALL		SHORT DESCRIPTION */
+	{ .verb = "info",		.callback = InternalHalInfo,		.info = "List available streams/playbacks/captures/controls for this api" },
+	{ .verb = "subscribe",		.callback = InternalHalSubscribe,	.info = "Subscribe to event(s) for values changes (streams/playbacks/captures/controls) for this api" },
+	{ .verb = "unsubscribe",	.callback = InternalHalUnsubscribe,	.info = "Unsubscribe to event(s) for values changes (streams/playbacks/captures/controls) for this api" },
+	{ .verb = NULL }		// Marker for end of the array
+};
+
+/*******************************************************************************
+ *		Dynamic API functions for internals hal			       *
+ ******************************************************************************/
+
+static int InternalHalInitOneApi(afb_api_t apiHandle)
+{
+	CtlConfigT *ctrlConfig;
+	struct HalData *currentHalData;
+
+	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
+	if(! (ctrlConfig = (CtlConfigT *) afb_api_get_userdata(apiHandle)))
+		return -2;
+
+	currentHalData = (struct HalData *) getExternalData(ctrlConfig);
+	if(! currentHalData)
+		return -3;
+
+	// Fill HalDatadata structure
+	currentHalData->internal = 1;
+
+	currentHalData->sndCardPath = (char *) ctrlConfig->uid;
+	currentHalData->info = (char *) ctrlConfig->info;
+
+	currentHalData->author = (char *) ctrlConfig->author;
+	currentHalData->version = (char *) ctrlConfig->version;
+	currentHalData->date = (char *) ctrlConfig->date;
+
+	currentHalData->internalHalData->apiHandle = apiHandle;
+	currentHalData->internalHalData->ctrlConfig = ctrlConfig;
+
+	currentHalData->sndCardId = InternalHalGetCardIdByCardPath(apiHandle, currentHalData->sndCardPath);
+
+	currentHalData->internalHalData->streamUpdates = afb_api_make_event(apiHandle, HAL_STREAM_UPDATES_EVENT_NAME);
+	if(! currentHalData->internalHalData->streamUpdates)
+		return -4;
+
+	if(currentHalData->sndCardId < 0)
+		currentHalData->status = HAL_STATUS_UNAVAILABLE;
+	else
+		currentHalData->status = HAL_STATUS_AVAILABLE;
+
+	// TBD JAI: handle refresh of hal status for dynamic card (/dev/by-id)
+
+	return CtlConfigExec(apiHandle, ctrlConfig);
+}
+
+static int InternalHalLoadOneApi(void *cbdata, afb_api_t apiHandle)
+{
+	int err;
+	CtlConfigT *ctrlConfig;
+	CtlSectionT *ctrlCurrentSections;
+
+	if(! cbdata || ! apiHandle)
+		return -1;
+
+	ctrlConfig = (CtlConfigT*) cbdata;
+
+	// Save closure as api's data context
+	afb_api_set_userdata(apiHandle, ctrlConfig);
+
+	// Add static controls verbs
+	if(HalUtlLoadVerbs(apiHandle, InternalHalApiStaticVerbs)) {
+		AFB_API_ERROR(apiHandle, "Load Section : fail to register static V2 verbs");
+		return 1;
+	}
+
+	ctrlCurrentSections = malloc(sizeof(ctrlSectionsDefault));
+	memcpy(ctrlCurrentSections, ctrlSectionsDefault, sizeof(ctrlSectionsDefault));
+
+	// Load section for corresponding Api
+	if((err = CtlLoadSections(apiHandle, ctrlConfig, ctrlCurrentSections)))
+		return err;
+
+	// Declare an event manager for this Api
+	afb_api_on_event(apiHandle, InternalHalDispatchApiEvent);
+
+	// Init Api function (does not receive user closure ???)
+	afb_api_on_init(apiHandle, InternalHalInitOneApi);
+
+	return 0;
+}
+
+int InternalHalCreateApi(afb_api_t apiHandle, char *path, struct HalMgrData *halMgrData)
+{
+	CtlConfigT *ctrlConfig;
+	struct HalData *currentHalData;
+
+	if(! apiHandle || ! path || ! halMgrData)
+		return -1;
+
+	// Create one Api per file
+	ctrlConfig = CtlLoadMetaData(apiHandle, path);
+	if(! ctrlConfig) {
+		AFB_API_ERROR(apiHandle, "No valid control config file in:\n-- %s", path);
+		return -2;
+	}
+
+	if(! ctrlConfig->api) {
+		AFB_API_ERROR(apiHandle, "API Missing from metadata in:\n-- %s", path);
+		return -3;
+	}
+
+	// Allocation of current hal controller data
+	currentHalData = HalUtlAddHalToHalList(&halMgrData->halDataList);
+	if(! currentHalData)
+		return -4;
+
+	currentHalData->apiName = (char *) ctrlConfig->api;
+
+	// Stores hal data in controller config
+	setExternalData(ctrlConfig, (void *) currentHalData);
+
+	// Allocation of the structure that will be used to store internal hal data
+	currentHalData->internalHalData = calloc(1, sizeof(struct InternalHalData));
+
+	// Create one API
+	if(! afb_api_new_api(apiHandle, ctrlConfig->api, ctrlConfig->info, 1, InternalHalLoadOneApi, ctrlConfig))
+		return -5;
+
+	return 0;
+}
+
+int InternalHalCreateAllApi(afb_api_t apiHandle, struct HalMgrData *halMgrData)
+{
+	int index, status = 0;
+	char *dirList, *fileName, *fullPath;
+	char filePath[CONTROL_MAXPATH_LEN];
+
+	filePath[CONTROL_MAXPATH_LEN - 1] = '\0';
+
+	json_object *configJ, *entryJ;
+
+	if(! apiHandle || ! halMgrData)
+		return -1;
+
+	// Hugely hack to make all V2 AFB_DEBUG to work in fileutils
+	AFB_default = apiHandle;
+
+	AFB_API_NOTICE(apiHandle, "Begining to create all APIs");
+
+	dirList = getenv("CONTROL_CONFIG_PATH");
+	if(! dirList)
+		dirList = CONTROL_CONFIG_PATH;
+
+	configJ = CtlConfigScan(dirList, "hal");
+	if(! configJ) {
+		AFB_API_WARNING(apiHandle, "No hal-(binder-middle-name)*.json config file(s) found in %s, 4a-hal-manager will only works with external hal", dirList);
+		return 0;
+	}
+
+	// We load 1st file others are just warnings
+	for(index = 0; index < (int) json_object_array_length(configJ); index++) {
+		entryJ = json_object_array_get_idx(configJ, index);
+
+		if(wrap_json_unpack(entryJ, "{s:s, s:s !}", "fullpath", &fullPath, "filename", &fileName)) {
+			AFB_API_ERROR(apiHandle, "HOOPs invalid JSON entry = %s", json_object_get_string(entryJ));
+			return -2;
+		}
+
+		strncpy(filePath, fullPath, sizeof(filePath) - 1);
+		strncat(filePath, "/", sizeof(filePath) - 1);
+		strncat(filePath, fileName, sizeof(filePath) - 1);
+
+		if(InternalHalCreateApi(apiHandle, filePath, halMgrData) < 0)
+			status--;
+	}
+
+	return status;
+}
+\ No newline at end of file