[FFmpeg-devel] [PATCH] Add initial program date time option (hls_init_prog_time)

[Steven Liu]

2016-12-17 15:58 GMT+08:00 Robert Nagy <ronag89 at gmail.com>:

> From 14da4c9610ac0cf257b2c28f21899e854592e646 Mon Sep 17 00:00:00 2001
> From: Jesper Ek <deadbeef84 at gmail.com>
> Date: Wed, 7 Dec 2016 16:01:08 +0100
> Subject: [PATCH] Add initial program date time option (hls_init_prog_time)
>
> It is often useful to specify the initial program date time, rather
> than relying on the current system time. This commit adds an argument
> option to specify the number of seconds since epoch.
> ---
>  libavformat/hlsenc.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
> index d03cf02..a0c8cfc 100644
> --- a/libavformat/hlsenc.c
> +++ b/libavformat/hlsenc.c
> @@ -791,7 +791,7 @@ 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) {
> +    if (hls->flags & HLS_PROGRAM_DATE_TIME && hls->initial_prog_date_time
> == 0) {
>
This maybe can more simple.

>          time_t now0;
>          time(&now0);
>          hls->initial_prog_date_time = now0;
> @@ -1101,6 +1101,7 @@ static const AVOption options[] = {
>      {"start_number",  "set first number in the sequence",
>  OFFSET(start_sequence),AV_OPT_TYPE_INT64,  {.i64 = 0},     0, INT64_MAX,
> E},
>      {"hls_time",      "set segment length in seconds",
> OFFSET(time),    AV_OPT_TYPE_FLOAT,  {.dbl = 2},     0, FLT_MAX, E},
>      {"hls_init_time", "set segment length in seconds at init list",
>     OFFSET(init_time),    AV_OPT_TYPE_FLOAT,  {.dbl = 0},     0, FLT_MAX,
> E},
> +    {"hls_init_prog_time", "set initial program date time in seconds since
> epoch", OFFSET(initial_prog_date_time),    AV_OPT_TYPE_DOUBLE,  {.dbl =
> 0},
>     0, DBL_MAX, E},
>      {"hls_list_size", "set maximum number of playlist entries",
>  OFFSET(max_nb_segments),    AV_OPT_TYPE_INT,    {.i64 = 5},     0,
> INT_MAX, E},
>      {"hls_ts_options","set hls mpegts list of options for the container
> format used for hls", OFFSET(format_options_str), AV_OPT_TYPE_STRING, {.str
> = NULL},  0, 0,    E},
>      {"hls_vtt_options","set hls vtt list of options for the container
> format used for hls", OFFSET(vtt_format_options_str), AV_OPT_TYPE_STRING,
> {.str = NULL},  0, 0,    E},
> --
> 2.10.0
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