Started custom RTCP

1 files changed, 73 insertions, 0 deletions

diff --git a/toxcore/util.c b/toxcore/util.c
index 5a72c4a4..d6db946d 100644
--- a/toxcore/util.c
+++ b/toxcore/util.c
@@ -185,3 +185,76 @@ int create_recursive_mutex(pthread_mutex_t *mutex)
 
     return 0;
 }
+
+
+struct RingBuffer {
+    uint16_t size; /* Max size */
+    uint16_t start;
+    uint16_t end;
+    void   **data;
+};
+
+bool rb_full(const RingBuffer *b)
+{
+    return (b->end + 1) % b->size == b->start;
+}
+bool rb_empty(const RingBuffer *b)
+{
+    return b->end == b->start;
+}
+void* rb_write(RingBuffer *b, void *p)
+{
+    void* rc = NULL;
+    if ((b->end + 1) % b->size == b->start) /* full */
+        rc = b->data[b->start];
+    
+    b->data[b->end] = p;
+    b->end = (b->end + 1) % b->size;
+
+    if (b->end == b->start) 
+        b->start = (b->start + 1) % b->size;
+    
+    return rc;
+}
+bool rb_read(RingBuffer *b, void **p)
+{
+    if (b->end == b->start) { /* Empty */
+        *p = NULL;
+        return false;
+    }
+    
+    *p = b->data[b->start];
+    b->start = (b->start + 1) % b->size;
+    return true;
+}
+void rb_clear(RingBuffer *b)
+{
+    while (!rb_empty(b)) {
+        void *p;
+        rb_read(b, &p);
+        free(p);
+    }
+}
+RingBuffer *rb_new(int size)
+{
+    RingBuffer *buf = calloc(sizeof(RingBuffer), 1);
+
+    if (!buf) return NULL;
+
+    buf->size = size + 1; /* include empty elem */
+
+    if (!(buf->data = calloc(buf->size, sizeof(void *)))) {
+        free(buf);
+        return NULL;
+    }
+
+    return buf;
+}
+void rb_free(RingBuffer *b)
+{
+    if (b) {
+        rb_clear(b);
+        free(b->data);
+        free(b);
+    }
+}
\ No newline at end of file