Thanks Carl, good point, hope this is better.
---
doc/muxers.texi | 8 ++++++++
libavformat/hlsenc.c | 20 ++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/doc/muxers.texi b/doc/muxers.texi
index b6d8823..c6e3b8f 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -368,6 +368,14 @@ Will produce the playlist, @file{out.m3u8}, and a single
segment file,
@item hls_flags delete_segments
Segment files removed from the playlist are deleted after a period of time
equal to the duration of the segment plus the duration of the playlist.
+
+@item hls_playlist_type event
+Emit @code{#EXT-X-PLAYLIST-TYPE:EVENT} in the m3u8 header. Forces
+@option{hls_list_size} to 0; the playlist can only be appended to.
+
+@item hls_playlist_type vod
+Emit @code{#EXT-X-PLAYLIST-TYPE:VOD} in the m3u8 header. Forces
+@option{hls_list_size} to 0; the playlist must not change.
@end table
@anchor{ico}
diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index adcf7df..11bb045 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -63,6 +63,13 @@ typedef enum HLSFlags {
HLS_OMIT_ENDLIST = (1 << 4),
} HLSFlags;
+typedef enum {
+ PLAYLIST_TYPE_NONE,
+ PLAYLIST_TYPE_EVENT,
+ PLAYLIST_TYPE_VOD,
+ PLAYLIST_TYPE_NB,
+} PlaylistType;
+
typedef struct HLSContext {
const AVClass *class; // Class for private options.
unsigned number;
@@ -78,6 +85,7 @@ typedef struct HLSContext {
int max_nb_segments; // Set by a private option.
int wrap; // Set by a private option.
uint32_t flags; // enum HLSFlags
+ uint32_t pl_type; // enum PlaylistType
char *segment_filename;
int use_localtime; ///< flag to expand filename with localtime
@@ -335,6 +343,10 @@ static int hls_append_segment(HLSContext *hls, double
duration, int64_t pos,
hls->last_segment = en;
+ // EVENT or VOD playlists imply sliding window cannot be used
+ if (hls->pl_type != PLAYLIST_TYPE_NONE)
+ hls->max_nb_segments = 0;
+
if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
en = hls->segments;
hls->segments = en->next;
@@ -411,6 +423,11 @@ static int hls_window(AVFormatContext *s, int last)
}
avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
+ if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
+ avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
+ } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
+ avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
+ }
av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
sequence);
@@ -875,6 +892,9 @@ static const AVOption options[] = {
{"discont_start", "start the playlist with a discontinuity tag", 0,
AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
{"omit_endlist", "Do not append an endlist when ending stream", 0,
AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 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 },
+ {"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" },
+ {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 =
PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
+ {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD },
INT_MIN, INT_MAX, E, "pl_type" },
{"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING,
{.str = NULL}, 0, 0, E},
{ NULL },
--
2.1.4
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