[FFmpeg-devel] [PATCH] avformat/hlsenc: implement program_date_time

[Michael Niedermayer]

On Thu, Sep 08, 2016 at 06:38:03AM +0800, Steven Liu wrote:
> 2016-09-08 3:34 GMT+08:00 Michael Niedermayer <michael at niedermayer.cc>:
> 
> > TODO: docs, version bump
> >
> > Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> > ---
> >  libavformat/hlsenc.c | 23 +++++++++++++++++++++++
> >  1 file changed, 23 insertions(+)
> >
> > diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
> > index c0b5ef2..a376312 100644
> > --- a/libavformat/hlsenc.c
> > +++ b/libavformat/hlsenc.c
> > @@ -64,6 +64,7 @@ typedef enum HLSFlags {
> >      HLS_OMIT_ENDLIST = (1 << 4),
> >      HLS_SPLIT_BY_TIME = (1 << 5),
> >      HLS_APPEND_LIST = (1 << 6),
> > +    HLS_PROGRAM_DATE_TIME = (1 << 7),
> >  } HLSFlags;
> >
> >  typedef enum {
> > @@ -128,6 +129,7 @@ typedef struct HLSContext {
> >
> >      char *method;
> >
> > +    double initial_prog_date_time;
> >  } HLSContext;
> >
> >  static int hls_delete_old_segments(HLSContext *hls) {
> > @@ -481,6 +483,7 @@ static int hls_window(AVFormatContext *s, int last)
> >      char *key_uri = NULL;
> >      char *iv_string = NULL;
> >      AVDictionary *options = NULL;
> > +    double prog_date_time = hls->initial_prog_date_time;
> >
> >      if (!use_rename && !warned_non_file++)
> >          av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol,
> > this may lead to races and temporarly partial files\n");
> > @@ -533,6 +536,19 @@ static int hls_window(AVFormatContext *s, int last)
> >          if (hls->flags & HLS_SINGLE_FILE)
> >               avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
> >                           en->size, en->pos);
> > +        if (hls->flags & HLS_PROGRAM_DATE_TIME) {
> > +            time_t tt;
> > +            int milli;
> > +            struct tm *tm, tmpbuf;
> > +            char buf0[128], buf1[128];
> > +            tt = (int64_t)prog_date_time;
> > +            milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
> > +            tm = localtime_r(&tt, &tmpbuf);
> > +            strftime(buf0, sizeof(buf0), "%FT%T", tm);
> > +            strftime(buf1, sizeof(buf1), "%z", tm);
> > +            avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n",
> > buf0, milli, buf1);
> > +            prog_date_time += en->duration;
> > +        }
> >          if (hls->baseurl)
> >              avio_printf(out, "%s", hls->baseurl);
> >          avio_printf(out, "%s\n", en->filename);
> > @@ -710,6 +726,12 @@ static int hls_write_header(AVFormatContext *s)
> >      hls->recording_time = (hls->init_time ? hls->init_time : hls->time) *
> > AV_TIME_BASE;
> >      hls->start_pts      = AV_NOPTS_VALUE;
> >
> > +    if (hls->flags & HLS_PROGRAM_DATE_TIME) {
> > +        time_t now0;
> > +        time(&now0);
> > +        hls->initial_prog_date_time = now0;
> > +    }
> > +
> >      if (hls->format_options_str) {
> >          ret = av_dict_parse_string(&hls->format_options,
> > hls->format_options_str, "=", ":", 0);
> >          if (ret < 0) {
> > @@ -1005,6 +1027,7 @@ static const AVOption options[] = {
> >      {"omit_endlist", "Do not append an endlist when ending stream", 0,
> > AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX,   E, "flags"},
> >      {"split_by_time", "split the hls segment by time which user set by
> > hls_time", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SPLIT_BY_TIME }, 0, UINT_MAX,
> >  E, "flags"},
> >      {"append_list", "append the new segments into old hls segment list",
> > 0, AV_OPT_TYPE_CONST, {.i64 = HLS_APPEND_LIST }, 0, UINT_MAX,   E, "flags"},
> > +    {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0,
> > AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX,   E,
> > "flags"},
> >      {"use_localtime", "set filename expansion with strftime at segment
> > creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
> >      {"use_localtime_mkdir", "create last directory component in
> > strftime-generated filename", OFFSET(use_localtime_mkdir),
> > AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
> >      {"hls_playlist_type", "set the HLS playlist type", OFFSET(pl_type),
> > AV_OPT_TYPE_INT, {.i64 = PLAYLIST_TYPE_NONE }, 0, PLAYLIST_TYPE_NB-1, E,
> > "pl_type" },
> > --
> > 2.9.3
> >
> LGTM

applied

thanks

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Many things microsoft did are stupid, but not doing something just because
microsoft did it is even more stupid. If everything ms did were stupid they
would be bankrupt already.
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