2017-08-05 8:17 GMT+08:00 DeHackEd <g...@dehacked.net>:
> Signed-off-by: DHE <g...@dehacked.net>
> ---
> doc/muxers.texi | 7 ++++++-
> libavformat/hlsenc.c | 4 +++-
> 2 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/doc/muxers.texi b/doc/muxers.texi
> index 94472ce..a7324a4 100644
> --- a/doc/muxers.texi
> +++ b/doc/muxers.texi
> @@ -551,7 +551,7 @@ format. The optional third line specifies the
> initialization vector (IV) as a
> hexadecimal string to be used instead of the segment sequence number
> (default)
> for encryption. Changes to @var{key_info_file} will result in segment
> encryption with the new key/IV and an entry in the playlist for the new key
> -URI/IV.
> +URI/IV if @code{hls_flags periodic_rekey} is enabled.
>
> Key info file format:
> @example
> @@ -665,6 +665,11 @@ first segment's information.
> @item omit_endlist
> Do not append the @code{EXT-X-ENDLIST} tag at the end of the playlist.
>
> +@item periodic_rekey
> +The file specified by @code{hls_key_info} will be checked periodically and
> +detect updates to the encryption info. Be sure to replace this file
> atomically,
> +including the file containing the AES encryption key.
> +
> @item split_by_time
> Allow segments to start on frames other than keyframes. This improves
> behavior on some players when the time between keyframes is inconsistent,
> diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
> index 5cf8c89..4d2e7fb 100644
> --- a/libavformat/hlsenc.c
> +++ b/libavformat/hlsenc.c
> @@ -85,6 +85,7 @@ typedef enum HLSFlags {
> HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment
> duration (microsec) in segment filenames when use_localtime e.g.: %%09t
> HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size
> (bytes) in segment filenames when use_localtime e.g.: %%014s
> HLS_TEMP_FILE = (1 << 11),
> + HLS_PERIODIC_REKEY = (1 << 12),
> } HLSFlags;
>
> typedef enum {
> @@ -1236,7 +1237,7 @@ static int hls_start(AVFormatContext *s)
> " will use -hls_key_info_file priority\n");
> }
>
> - if (c->number <= 1) {
> + if (c->number <= 1 && !(c->flags & HLS_PERIODIC_REKEY)) {
it will always false when use HLS_PERIODIC_REKEY, then will not enable
hls encryption.
> if (c->key_info_file) {
> if ((err = hls_encryption_start(s)) < 0)
> goto fail;
> @@ -1804,6 +1805,7 @@ static const AVOption options[] = {
> {"second_level_segment_index", "include segment index in segment
> filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 =
> HLS_SECOND_LEVEL_SEGMENT_INDEX }, 0, UINT_MAX, E, "flags"},
> {"second_level_segment_duration", "include segment duration in segment
> filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 =
> HLS_SECOND_LEVEL_SEGMENT_DURATION }, 0, UINT_MAX, E, "flags"},
> {"second_level_segment_size", "include segment size in segment filenames
> when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 =
> HLS_SECOND_LEVEL_SEGMENT_SIZE }, 0, UINT_MAX, E, "flags"},
> + {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0,
> AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 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" },
> --
> 1.8.4.1
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> ffmpeg-devel@ffmpeg.org
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