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avformat/hlsenc: Redo checking for strftime %s support to avoid warnings

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This is intended to avoid -Wformat= warnings on systems
where %s might not be supported (and also generally emitted
by GCC with -pedantic).

Reviewed-by: Liu Steven <lq@chinaffmpeg.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-03-05 10:19:25 +01:00
parent b0e17e0f95
commit d085f341d6
1 changed files with 12 additions and 7 deletions
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19
libavformat/hlsenc.c
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@ -1878,18 +1878,23 @@ fail:
static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
{
HLSContext *hls = s->priv_data;
#if HAVE_LIBC_MSVCRT
// no %s support on MSVC, which invokes the invalid parameter handler
// on unsupported format strings, instead of returning an error
int strftime_s_supported = 0;
#else
char b[21];
time_t t = time(NULL);
struct tm *p, tmbuf;
HLSContext *hls = s->priv_data;
p = localtime_r(&t, &tmbuf);
struct tm tmbuf, *p = localtime_r(&t, &tmbuf);
// no %s support when strftime returned error or left format string unchanged
// also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
int strftime_s_supported = strftime(b, sizeof(b), "%s", p) && strcmp(b, "%s");
#endif
if (hls->segment_type == SEGMENT_TYPE_FMP4) {
return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
return strftime_s_supported ? "-%s.m4s" : "-%Y%m%d%H%M%S.m4s";
}
return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
return strftime_s_supported ? "-%s.ts" : "-%Y%m%d%H%M%S.ts";
}
static int append_postfix(char *name, int name_buf_len, int i)