fftools/cmdutils: return AVERROR_EXIT for OPT_EXIT options instead of aborting()

fftools/cmdutils.c

@@ -320,7 +320,7 @@ static int write_option(void *optctx, const OptionDef *po, const char *opt,
         }
     }
     if (po->flags & OPT_EXIT)
-        exit_program(0);
+        return AVERROR_EXIT;
 
     return 0;
 }

fftools/ffmpeg.c

@@ -1371,6 +1371,9 @@ int main(int argc, char **argv)
           err_rate_exceeded   ?  69 : ret;
 
 finish:
+    if (ret == AVERROR_EXIT)
+        ret = 0;
+
     exit_program(ret);
     return ret;
 }

fftools/ffmpeg_opt.c

@@ -1345,7 +1345,7 @@ int ffmpeg_parse_options(int argc, char **argv)
 
 fail:
     uninit_parse_context(&octx);
-    if (ret < 0) {
+    if (ret < 0 && ret != AVERROR_EXIT) {
         av_log(NULL, AV_LOG_FATAL, "Error %s: %s\n",
                errmsg ? errmsg : "", av_err2str(ret));
     }

fftools/ffplay.c

@@ -3657,7 +3657,7 @@ int main(int argc, char **argv)
 
     ret = parse_options(NULL, argc, argv, options, opt_input_file);
     if (ret < 0)
-        exit(1);
+        exit(ret == AVERROR_EXIT ? 0 : 1);
 
     if (!input_filename) {
         show_usage();

fftools/ffprobe.c

@@ -4129,7 +4129,7 @@ int main(int argc, char **argv)
     show_banner(argc, argv, options);
     ret = parse_options(NULL, argc, argv, options, opt_input_file);
     if (ret < 0)
-        exit_program(1);
+        exit_program(ret == AVERROR_EXIT ? 0 : 1);
 
     if (do_show_log)
         av_log_set_callback(log_callback);