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avutil/log: fix detecting console mode on Win32

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A redirected stderr can still have a valid handle.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2020-01-29 00:46:01 +01:00
parent bad8feb5e6
commit 1b34c0690f
1 changed files with 3 additions and 0 deletions
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3
libavutil/log.c
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@ -124,7 +124,10 @@ static void check_color_terminal(void)
{ {
#if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
CONSOLE_SCREEN_BUFFER_INFO con_info; CONSOLE_SCREEN_BUFFER_INFO con_info;
DWORD dummy;
con = GetStdHandle(STD_ERROR_HANDLE); con = GetStdHandle(STD_ERROR_HANDLE);
if (con != INVALID_HANDLE_VALUE && !GetConsoleMode(con, &dummy))
con = INVALID_HANDLE_VALUE;
use_color = (con != INVALID_HANDLE_VALUE) && !getenv("AV_LOG_FORCE_NOCOLOR"); use_color = (con != INVALID_HANDLE_VALUE) && !getenv("AV_LOG_FORCE_NOCOLOR");
if (use_color) { if (use_color) {
GetConsoleScreenBufferInfo(con, &con_info); GetConsoleScreenBufferInfo(con, &con_info);