[FFmpeg-devel] [PATCH v2 2/2] avformat/utils: refactor upstream_stream_timings

[Rodger Combs]

Both patches LGTM.

> On Apr 19, 2018, at 18:51, Aman Gupta <ffmpeg at tmm1.net> wrote:
> 
> From: Aman Gupta <aman at tmm1.net>
> 
> ---
> libavformat/utils.c | 21 ++++++++++-----------
> 1 file changed, 10 insertions(+), 11 deletions(-)
> 
> diff --git a/libavformat/utils.c b/libavformat/utils.c
> index 705b79031d..c25eab4d49 100644
> --- a/libavformat/utils.c
> +++ b/libavformat/utils.c
> @@ -2620,7 +2620,6 @@ static void update_stream_timings(AVFormatContext *ic)
>     int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
>     int64_t duration, duration1, duration_text, filesize;
>     int i;
> -    AVStream *st;
>     AVProgram *p;
> 
>     start_time = INT64_MAX;
> @@ -2631,21 +2630,22 @@ static void update_stream_timings(AVFormatContext *ic)
>     duration_text = INT64_MIN;
> 
>     for (i = 0; i < ic->nb_streams; i++) {
> -        st = ic->streams[i];
> +        AVStream *st = ic->streams[i];
> +        int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
> +                      st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
>         if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
>             start_time1 = av_rescale_q(st->start_time, st->time_base,
>                                        AV_TIME_BASE_Q);
> -            if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
> -                if (start_time1 < start_time_text)
> -                    start_time_text = start_time1;
> -            } else
> +            if (is_text)
> +                start_time_text = FFMIN(start_time_text, start_time1);
> +            else
>                 start_time = FFMIN(start_time, start_time1);
>             end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
>                                          AV_TIME_BASE_Q,
>                                          AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
>             if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
>                 end_time1 += start_time1;
> -                if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
> +                if (is_text)
>                     end_time_text = FFMAX(end_time_text, end_time1);
>                 else
>                     end_time = FFMAX(end_time, end_time1);
> @@ -2660,7 +2660,7 @@ static void update_stream_timings(AVFormatContext *ic)
>         if (st->duration != AV_NOPTS_VALUE) {
>             duration1 = av_rescale_q(st->duration, st->time_base,
>                                      AV_TIME_BASE_Q);
> -            if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
> +            if (is_text)
>                 duration_text = FFMAX(duration_text, duration1);
>             else
>                 duration = FFMAX(duration, duration1);
> @@ -2671,11 +2671,10 @@ static void update_stream_timings(AVFormatContext *ic)
>     else if (start_time > start_time_text)
>         av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
> 
> -    if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE)) {
> +    if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
>         end_time = end_time_text;
> -    } else if (end_time < end_time_text) {
> +    else if (end_time < end_time_text)
>         av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
> -    }
> 
>      if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
>          duration = duration_text;
> -- 
> 2.14.2
>