From f87a6df9386d7afc47ca095b9f0d8a6edc8c9d3f Mon Sep 17 00:00:00 2001
From: Robin Linden <dev@robinlinden.eu>
Date: Sun, 6 Feb 2022 15:18:55 +0100
Subject: [PATCH] cleanup: Split msi callback array into 1 member per callback

---
 toxav/msi.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++---
 toxav/msi.h |  8 ++++++-
 2 files changed, 69 insertions(+), 4 deletions(-)

diff --git a/toxav/msi.c b/toxav/msi.c
index 1c9d19be..396edcd5 100644
--- a/toxav/msi.c
+++ b/toxav/msi.c
@@ -72,6 +72,7 @@ static void handle_init(MSICall *call, const MSIMessage *msg);
 static void handle_push(MSICall *call, const MSIMessage *msg);
 static void handle_pop(MSICall *call, const MSIMessage *msg);
 static void handle_msi_packet(Messenger *m, uint32_t friend_number, const uint8_t *data, uint16_t length, void *object);
+static msi_action_cb *get_callback(MSISession *session, MSICallbackID id);
 
 
 /*
@@ -85,7 +86,39 @@ void msi_register_callback(MSISession *session, msi_action_cb *callback, MSICall
     }
 
     pthread_mutex_lock(session->mutex);
-    session->callbacks[id] = callback;
+
+    switch (id) {
+        case MSI_ON_INVITE: {
+            session->invite_callback = callback;
+            break;
+        }
+
+        case MSI_ON_START: {
+            session->start_callback = callback;
+            break;
+        }
+
+        case MSI_ON_END: {
+            session->end_callback = callback;
+            break;
+        }
+
+        case MSI_ON_ERROR: {
+            session->error_callback = callback;
+            break;
+        }
+
+        case MSI_ON_PEERTIMEOUT: {
+            session->peertimeout_callback = callback;
+            break;
+        }
+
+        case MSI_ON_CAPABILITIES: {
+            session->capabilities_callback = callback;
+            break;
+        }
+    }
+
     pthread_mutex_unlock(session->mutex);
 }
 MSISession *msi_new(Messenger *m)
@@ -492,11 +525,12 @@ static int send_error(Messenger *m, uint32_t friend_number, MSIError error)
 static int invoke_callback(MSICall *call, MSICallbackID cb)
 {
     assert(call);
+    msi_action_cb *callback = get_callback(call->session, cb);
 
-    if (call->session->callbacks[cb]) {
+    if (callback != nullptr) {
         LOGGER_DEBUG(call->session->messenger->log, "Invoking callback function: %d", cb);
 
-        if (call->session->callbacks[cb](call->session->av, call) != 0) {
+        if (callback(call->session->av, call) != 0) {
             LOGGER_WARNING(call->session->messenger->log,
                            "Callback state handling failed, sending error");
             goto FAILURE;
@@ -857,3 +891,28 @@ static void handle_msi_packet(Messenger *m, uint32_t friend_number, const uint8_
 
     pthread_mutex_unlock(session->mutex);
 }
+
+static msi_action_cb *get_callback(MSISession *session, MSICallbackID id)
+{
+    switch (id) {
+        case MSI_ON_INVITE:
+            return session->invite_callback;
+
+        case MSI_ON_START:
+            return session->start_callback;
+
+        case MSI_ON_END:
+            return session->end_callback;
+
+        case MSI_ON_ERROR:
+            return session->error_callback;
+
+        case MSI_ON_PEERTIMEOUT:
+            return session->peertimeout_callback;
+
+        case MSI_ON_CAPABILITIES:
+            return session->capabilities_callback;
+    }
+
+    return nullptr;
+}
diff --git a/toxav/msi.h b/toxav/msi.h
index 83d2a968..d216c411 100644
--- a/toxav/msi.h
+++ b/toxav/msi.h
@@ -101,7 +101,13 @@ typedef struct MSISession {
     Messenger      *messenger;
 
     pthread_mutex_t mutex[1];
-    msi_action_cb *callbacks[7];
+
+    msi_action_cb *invite_callback;
+    msi_action_cb *start_callback;
+    msi_action_cb *end_callback;
+    msi_action_cb *error_callback;
+    msi_action_cb *peertimeout_callback;
+    msi_action_cb *capabilities_callback;
 } MSISession;
 
 /**