Fork ESP-IDF's bluetooth component

i want better sbc encoding, and no cla will stop me

lib/bt/common/osi/future.c

@@ -0,0 +1,97 @@
+/******************************************************************************
+ *
+ *  Copyright (C) 2014 Google, Inc.
+ *
+ *  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 "bt_common.h"
+#include "osi/allocator.h"
+#include "osi/future.h"
+#include "osi/osi.h"
+
+void future_free(future_t *future);
+
+future_t *future_new(void)
+{
+    future_t *ret = osi_calloc(sizeof(future_t));
+    if (!ret) {
+        OSI_TRACE_ERROR("%s unable to allocate memory for return value.", __func__);
+        goto error;
+    }
+
+    if (osi_sem_new(&ret->semaphore, 1, 0) != 0) {
+        OSI_TRACE_ERROR("%s unable to allocate memory for the semaphore.", __func__);
+        goto error;
+    }
+
+    ret->ready_can_be_called = true;
+    return ret;
+error:;
+    future_free(ret);
+    return NULL;
+}
+
+future_t *future_new_immediate(void *value)
+{
+    future_t *ret = osi_calloc(sizeof(future_t));
+    if (!ret) {
+        OSI_TRACE_ERROR("%s unable to allocate memory for return value.", __func__);
+        goto error;
+    }
+
+    ret->result = value;
+    ret->ready_can_be_called = false;
+    return ret;
+error:;
+    future_free(ret);
+    return NULL;
+}
+
+void future_ready(future_t *future, void *value)
+{
+    assert(future != NULL);
+    assert(future->ready_can_be_called);
+
+    future->ready_can_be_called = false;
+    future->result = value;
+    osi_sem_give(&future->semaphore);
+}
+
+void *future_await(future_t *future)
+{
+    assert(future != NULL);
+
+    // If the future is immediate, it will not have a semaphore
+    if (future->semaphore) {
+        osi_sem_take(&future->semaphore, OSI_SEM_MAX_TIMEOUT);
+    }
+
+    void *result = future->result;
+    future_free(future);
+    return result;
+}
+
+void future_free(future_t *future)
+{
+    if (!future) {
+        return;
+    }
+
+    if (future->semaphore) {
+        osi_sem_free(&future->semaphore);
+    }
+
+    osi_free(future);
+}