This provides more verbose error messages than the strerror
fallback in cmdutils.c (which might not necessarily be a good thing),
but it also is able to handle network error codes.
---
libavutil/error.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/libavutil/error.c b/libavutil/error.c
index 21b6876..d7f299c 100644
--- a/libavutil/error.c
+++ b/libavutil/error.c
@@ -18,6 +18,9 @@
#include "avutil.h"
#include "avstring.h"
+#ifdef _WIN32
+#include <windows.h>
+#endif
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
{
@@ -45,7 +48,15 @@ int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
if (errstr) {
av_strlcpy(errbuf, errstr, errbuf_size);
} else {
-#if HAVE_STRERROR_R
+#ifdef _WIN32
+ if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS |
+ FORMAT_MESSAGE_MAX_WIDTH_MASK,
+ NULL, AVUNERROR(errnum),
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errbuf,
+ errbuf_size, NULL) <= 0)
+ ret = -1;
+#elif defined(HAVE_STRERROR_R)
ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size);
#else
ret = -1;
--
1.7.9.4
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