android/handsfree-client: Add handsfree-client HAL skeleton

This patch also introduce BLUEZ_EXTENSIONS flag which is used for not
Android AOSP features like HF Client in this case.

Idea is that BfA for PC is always build with this flag and it is added
to Makefile.am

For Android there is need to set this flag as described in README

1 files changed, 101 insertions, 0 deletions

diff --git a/android/hal-handsfree-client.c b/android/hal-handsfree-client.c
new file mode 100644
index 000000000..9422e0f2e
--- /dev/null
+++ b/android/hal-handsfree-client.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2014 Intel Corporation
+ *
+ * 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.
+ *
+ */
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <cutils/properties.h>
+
+#include "hal-log.h"
+#include "hal.h"
+#include "hal-msg.h"
+#include "ipc-common.h"
+#include "hal-ipc.h"
+
+static const bthf_client_callbacks_t *cbs = NULL;
+
+static bool interface_ready(void)
+{
+	return cbs != NULL;
+}
+
+/*
+ * handlers will be called from notification thread context,
+ * index in table equals to 'opcode - HAL_MINIMUM_EVENT'
+ */
+static const struct hal_ipc_handler ev_handlers[] = {
+};
+
+static bt_status_t init(bthf_client_callbacks_t *callbacks)
+{
+	struct hal_cmd_register_module cmd;
+	int ret;
+
+	DBG("");
+
+	if (interface_ready())
+		return BT_STATUS_DONE;
+
+	cbs = callbacks;
+
+	hal_ipc_register(HAL_SERVICE_ID_HANDSFREE_CLIENT, ev_handlers,
+				sizeof(ev_handlers)/sizeof(ev_handlers[0]));
+
+	cmd.service_id = HAL_SERVICE_ID_HANDSFREE_CLIENT;
+
+	ret = hal_ipc_cmd(HAL_SERVICE_ID_CORE, HAL_OP_REGISTER_MODULE,
+					sizeof(cmd), &cmd, NULL, NULL, NULL);
+
+	if (ret != BT_STATUS_SUCCESS) {
+		cbs = NULL;
+		hal_ipc_unregister(HAL_SERVICE_ID_HANDSFREE_CLIENT);
+	}
+
+	return ret;
+}
+
+static void cleanup(void)
+{
+	struct hal_cmd_unregister_module cmd;
+
+	DBG("");
+
+	if (!interface_ready())
+		return;
+
+	cbs = NULL;
+
+	cmd.service_id = HAL_SERVICE_ID_HANDSFREE_CLIENT;
+
+	hal_ipc_cmd(HAL_SERVICE_ID_CORE, HAL_OP_UNREGISTER_MODULE,
+					sizeof(cmd), &cmd, NULL, NULL, NULL);
+
+	hal_ipc_unregister(HAL_SERVICE_ID_HANDSFREE_CLIENT);
+}
+
+static bthf_client_interface_t iface = {
+	.size = sizeof(iface),
+	.init = init,
+	.cleanup = cleanup
+};
+
+bthf_client_interface_t *bt_get_hf_client_interface(void)
+{
+	return &iface;
+}