fix: add packets_left count (#1194)

include/dpp/dispatcher.h

@@ -1980,7 +1980,12 @@ struct DPP_EXPORT voice_buffer_send_t : public event_dispatch_t {
 	/**
 	 * @brief encoded size of sent buffer
 	 */
-	int buffer_size = 0;
+	uint64_t buffer_size = 0;
+
+	/**
+	 * @brief number of packet waiting to be sent in the queue
+	 */
+	size_t packets_left = 0;
 };
 
 /**

src/dpp/discordvoiceclient.cpp

@@ -899,7 +899,8 @@ void discord_voice_client::write_ready()
 		last_timestamp = std::chrono::high_resolution_clock::now();
 		if (!creator->on_voice_buffer_send.empty()) {
 			voice_buffer_send_t snd(nullptr, "");
-			snd.buffer_size = (int)bufsize;
+			snd.buffer_size = bufsize;
+			snd.packets_left = outbuf.size();
 			snd.voice_client = this;
 			creator->on_voice_buffer_send.call(snd);
 		}

src/unittest/test.cpp

@@ -1140,7 +1140,13 @@ Markdown lol \\|\\|spoiler\\|\\| \\~\\~strikethrough\\~\\~ \\`small \\*code\\* b
 		});
 
 		bot.on_voice_buffer_send([&](const dpp::voice_buffer_send_t & event) {
-			if (event.buffer_size == 0) {
+			static bool sent_some_data = false;
+
+			if (event.buffer_size > 0) {
+			   sent_some_data = true;
+			}
+
+			if (sent_some_data && event.packets_left == 0) {
 				set_test(VOICESEND, true);
 			}
 		});