From aa24e65598088cda008ed19930809b3cd5703d7e Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Wed, 31 May 2023 12:21:01 +0200
Subject: [PATCH] parse_options: ensure audio device given once

avoid unintended audio playback/capture devices given

refer GH-316
---
 src/main.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 22e4f0cca..3a3037843 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -809,6 +809,10 @@ static int parse_options(int argc, char *argv[], struct ug_options *opt) {
                                 audio_playback_help(strcmp(optarg, "full") == 0);
                                 return 1;
                         }
+                        if (string(opt->audio.recv_cfg) != ug_options().audio.recv_cfg) {
+                                log_msg(LOG_LEVEL_ERROR, "Multiple audio playback devices given!\n");
+                                return -EXIT_FAIL_USAGE;
+                        }
                         opt->audio.recv_cfg = optarg;
                         break;
                 case 's':
@@ -816,6 +820,10 @@ static int parse_options(int argc, char *argv[], struct ug_options *opt) {
                                 audio_capture_print_help(strcmp(optarg, "full") == 0);
                                 return 1;
                         }
+                        if (string(opt->audio.send_cfg) != ug_options().audio.send_cfg) {
+                                log_msg(LOG_LEVEL_ERROR, "Multiple audio capturers given!\n");
+                                return -EXIT_FAIL_USAGE;
+                        }
                         opt->audio.send_cfg = optarg;
                         break;
                 case 'f':