[FFmpeg-devel] [PATCH v2] avformat/dashenc: Format xs:datetime in millisecond precision

[Jeyapal, Karthick]

On 1/17/19 2:35 PM, Karthick J wrote:
> For low latency streaming even milliseconds matter!
> ---
>  libavformat/dashenc.c | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
> index cfd0f601d4..9c90cf17e5 100644
> --- a/libavformat/dashenc.c
> +++ b/libavformat/dashenc.c
> @@ -32,6 +32,7 @@
>  #include "libavutil/mathematics.h"
>  #include "libavutil/opt.h"
>  #include "libavutil/rational.h"
> +#include "libavutil/time.h"
>  #include "libavutil/time_internal.h"
>  
>  #include "avc.h"
> @@ -668,12 +669,20 @@ static void write_time(AVIOContext *out, int64_t time)
>  
>  static void format_date_now(char *buf, int size)
>  {
> -    time_t t = time(NULL);
>      struct tm *ptm, tmbuf;
> -    ptm = gmtime_r(&t, &tmbuf);
> +    int64_t time_us = av_gettime();
> +    int64_t time_ms = time_us / 1000;
> +    const time_t time_s = time_ms / 1000;
> +    int millisec = time_ms - (time_s * 1000);
> +    ptm = gmtime_r(&time_s, &tmbuf);
>      if (ptm) {
> -        if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%SZ", ptm))
> +        int len;
> +        if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
>              buf[0] = '\0';
> +            return;
> +        }
> +        len = strlen(buf);
> +        snprintf(buf + len, size - len, ".%03dZ", millisec);
>      }
>  }
>  
Pushed.