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avformat/asfdec_o: use common function for setting creation time

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This also increases precision.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint
2026-06-14 01:34:09 +02:00
parent 83c6534d5a
commit 2bbf0da31a
1 changed files with 3 additions and 22 deletions
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25
libavformat/asfdec_o.c
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@@ -19,15 +19,12 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <time.h>
#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "libavutil/dict.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "libavutil/time_internal.h"
#include "avformat.h"
#include "avlanguage.h"
@@ -534,31 +531,15 @@ static int asf_read_properties(AVFormatContext *s, const GUIDParseTable *g)
{
ASFContext *asf = s->priv_data;
AVIOContext *pb = s->pb;
time_t creation_time;
int64_t creation_time;
avio_rl64(pb); // read object size
avio_skip(pb, 16); // skip File ID
avio_skip(pb, 8); // skip File size
creation_time = avio_rl64(pb);
if (!(asf->b_flags & ASF_FLAG_BROADCAST)) {
struct tm tmbuf;
struct tm *tm;
char buf[64];
// creation date is in 100 ns units from 1 Jan 1601, conversion to s
creation_time /= 10000000;
// there are 11644473600 seconds between 1 Jan 1601 and 1 Jan 1970
creation_time -= 11644473600;
tm = gmtime_r(&creation_time, &tmbuf);
if (tm) {
if (!strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", tm))
buf[0] = '\0';
} else
buf[0] = '\0';
if (buf[0]) {
if (av_dict_set(&s->metadata, "creation_time", buf, 0) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
}
if (ff_dict_set_timestamp(&s->metadata, "creation_time", ff_asf_filetime_to_avtime(creation_time)) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
}
asf->nb_packets = avio_rl64(pb);
asf->duration = avio_rl64(pb) / 10000; // stream duration