From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Sun, 10 Jan 2016 19:47:55 +0000 (+0100)
Subject: Better error messages on avio_open2 failure.
X-Git-Tag: 1.0.0~32
X-Git-Url: https://git.sesse.net/?p=nageru;a=commitdiff_plain;h=59d1397c90bd594efb80734a2e6f213fb8c5e584

Better error messages on avio_open2 failure.
---

diff --git a/httpd.cpp b/httpd.cpp
index e71f40e..f148fa1 100644
--- a/httpd.cpp
+++ b/httpd.cpp
@@ -30,8 +30,10 @@ HTTPD::HTTPD(const char *output_filename, int width, int height)
 	AVFormatContext *avctx = avformat_alloc_context();
 	avctx->oformat = av_guess_format(NULL, output_filename, NULL);
 	strcpy(avctx->filename, output_filename);
-	if (avio_open2(&avctx->pb, output_filename, AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL) < 0) {
-		fprintf(stderr, "%s: avio_open2() failed\n", output_filename);
+	int ret = avio_open2(&avctx->pb, output_filename, AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL);
+	if (ret < 0) {
+		char tmp[AV_ERROR_MAX_STRING_SIZE];
+		fprintf(stderr, "%s: avio_open2() failed: %s\n", output_filename, av_make_error_string(tmp, sizeof(tmp), ret));
 		exit(1);
 	}