Add bluetooth hal plugin

Add first version of a hal plugin that will handle hal that
wants bluetooth as an audio device.

Change-Id: I4f5628ef9688c417b1b443fc3c4948cb23c17214
Signed-off-by: Jonathan Aillet <jonathan.aillet@iot.bzh>

1 files changed, 171 insertions, 0 deletions

diff --git a/plugins/lib/bluetooth/hal-bt-cb.c b/plugins/lib/bluetooth/hal-bt-cb.c
new file mode 100644
index 0000000..c4f0231
--- /dev/null
+++ b/plugins/lib/bluetooth/hal-bt-cb.c
@@ -0,0 +1,171 @@
+/*
+ * 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 <stdbool.h>
+
+#include <wrap-json.h>
+
+#include <ctl-plugin.h>
+
+#include "hal-bt-data.h"
+
+/*******************************************************************************
+ *		HAL Bluetooth plugin verbs functions			       *
+ ******************************************************************************/
+
+void HalBtGetStreamingStatus(AFB_ReqT request)
+{
+	struct HalBtPluginData *localHalBtPluginData;
+
+	if(! (localHalBtPluginData = (struct HalBtPluginData *) afb_request_get_vcbdata(request))) {
+		AFB_ReqFail(request, "bt_plugin_data", "Can't get bluetooth plugin data");
+		return;
+	}
+
+	AFB_ReqSuccess(request, json_object_new_string(localHalBtPluginData->btStreamEnabled ? "enabled" : "disabled"), "Bluetooth streaming status");
+}
+
+void HalBtSetStreamingStatus(AFB_ReqT request)
+{
+	unsigned int requestedBtStreamingStatus;
+
+	struct HalBtPluginData *localHalBtPluginData;
+
+	json_object *requestJson;
+
+	if(! (localHalBtPluginData = (struct HalBtPluginData *) afb_request_get_vcbdata(request))) {
+		AFB_ReqFail(request, "bt_plugin_data", "Can't get bluetooth plugin data");
+		return;
+	}
+
+	if(! (requestJson = AFB_ReqJson(request))) {
+		AFB_ReqFail(request, "request_json", "Can't get request json");
+		return;
+	}
+
+	if(wrap_json_unpack(requestJson, "{s:b}", "status", &requestedBtStreamingStatus)) {
+		AFB_ReqFail(request, "requested_status", "Can't get requested bluetooth streaming status");
+		return;
+	}
+
+	localHalBtPluginData->btStreamEnabled = requestedBtStreamingStatus;
+	
+	// TODO JAI : Enable capture stream to playback using 'uid' used at 'set-capture' call
+
+	AFB_ReqSuccess(request, NULL, "Bluetooth streaming status successfully set");
+}
+
+void HalBtGetConnectedBluetoothDevices(AFB_ReqT request)
+{
+	struct HalBtPluginData *localHalBtPluginData;
+	struct HalBtDeviceData *currentBtDeviceData;
+
+	json_object *requestAnswer, *currentBtDeviceObjectJ;
+
+	if(! (localHalBtPluginData = (struct HalBtPluginData *) afb_request_get_vcbdata(request))) {
+		AFB_ReqFail(request, "bt_plugin_data", "Can't get bluetooth plugin data");
+		return;
+	}
+
+	if(! (currentBtDeviceData = localHalBtPluginData->first)) {
+		AFB_ReqSuccess(request, NULL, "No bluetooth device connected");
+		return;
+	}
+
+	requestAnswer = json_object_new_array();
+	if(! requestAnswer) {
+		AFB_ReqFail(request, "json_answer", "Can't generate json answer");
+		return;
+	}
+
+	while(currentBtDeviceData) {
+		wrap_json_pack(&currentBtDeviceObjectJ,
+			       "{s:s s:s}",
+			       "Name", currentBtDeviceData->name,
+			       "Address", currentBtDeviceData->address);
+		json_object_array_add(requestAnswer, currentBtDeviceObjectJ);
+
+		currentBtDeviceData = currentBtDeviceData->next;
+	}
+
+	AFB_ReqSuccess(request, requestAnswer, "Connected bluetooth devices list");
+}
+
+void HalBtGetSelectedBluetoothDevice(AFB_ReqT request)
+{
+	struct HalBtPluginData *localHalBtPluginData;
+
+	json_object *selectedBtDeviceObject;
+
+	if(! (localHalBtPluginData = (struct HalBtPluginData *) afb_request_get_vcbdata(request))) {
+		AFB_ReqFail(request, "bt_plugin_data", "Can't get bluetooth plugin data");
+		return;
+	}
+
+	if(! localHalBtPluginData->selectedBtDevice) {
+		AFB_ReqSuccess(request, NULL, "No bluetooth device connected, cannot provide selected device");
+		return;
+	}
+
+	wrap_json_pack(&selectedBtDeviceObject,
+		       "{s:s s:s}",
+		       "Name", localHalBtPluginData->selectedBtDevice->name,
+		       "Address", localHalBtPluginData->selectedBtDevice->address);
+	
+	AFB_ReqSuccess(request, selectedBtDeviceObject, "Selected Bluetooth device");
+}
+
+void HalBtSetSelectedBluetoothDevice(AFB_ReqT request)
+{
+	char *requestedBtDeviceToSelect;
+
+	struct HalBtPluginData *localHalBtPluginData;
+	struct HalBtDeviceData *selectedBtDeviceData;
+
+	json_object *requestJson;
+
+	if(! (localHalBtPluginData = (struct HalBtPluginData *) afb_request_get_vcbdata(request))) {
+		AFB_ReqFail(request, "bt_plugin_data", "Can't get bluetooth plugin data");
+		return;
+	}
+
+	if(! (requestJson = AFB_ReqJson(request))) {
+		AFB_ReqFail(request, "request_json", "Can't get request json");
+		return;
+	}
+
+	if(wrap_json_unpack(requestJson, "{s:s}", "Address", &requestedBtDeviceToSelect)) {
+		AFB_ReqFail(request, "requested_device_to_select", "Can't get requested bluetooth device to select");
+		return;
+	}
+
+	if(! (selectedBtDeviceData = HalBtDataSearchBtDeviceByAddress(&localHalBtPluginData->first, requestedBtDeviceToSelect))) {
+		AFB_ReqFail(request, "requested_device_to_select", "Requested bluetooth device to select is not currently connected");
+		return;
+	}
+
+	localHalBtPluginData->selectedBtDevice = selectedBtDeviceData;
+
+	// TODO JAI : Tell the softmixer that we want it as an input using 'bluealsa:HCI=hci0,DEV=F6:32:15:2A:80:70,PROFILE=a2dp' 
+	//	      string as capture associated with an 'uid' using smixer verb 'set-capture'
+
+	AFB_ReqSuccess(request, NULL, "Selected bluetooth device successfully set");
+}
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