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avformat/hlsenc: improve to write m3u8 head block

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Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
This commit is contained in:
Steven Liu 2017-01-24 22:25:29 +08:00
parent 25f4f08ba5
commit 1033f56b07
1 changed files with 15 additions and 19 deletions
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34
libavformat/hlsenc.c
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@ -660,6 +660,19 @@ static void set_http_options(AVDictionary **options, HLSContext *c)
av_dict_set(options, "method", c->method, 0);
}
static void write_m3u8_head_block(HLSContext *hls, AVIOContext *out, int version,
int target_duration, int64_t sequence)
{
avio_printf(out, "#EXTM3U\n");
avio_printf(out, "#EXT-X-VERSION:%d\n", version);
if (hls->allowcache == 0 || hls->allowcache == 1) {
avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
}
avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
av_log(hls, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
}
static int hls_window(AVFormatContext *s, int last)
{
HLSContext *hls = s->priv_data;
@ -699,21 +712,13 @@ static int hls_window(AVFormatContext *s, int last)
}
hls->discontinuity_set = 0;
avio_printf(out, "#EXTM3U\n");
avio_printf(out, "#EXT-X-VERSION:%d\n", version);
if (hls->allowcache == 0 || hls->allowcache == 1) {
avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
}
avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
write_m3u8_head_block(hls, out, version, target_duration, 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);
if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
avio_printf(out, "#EXT-X-DISCONTINUITY\n");
hls->discontinuity_set = 1;
@ -775,16 +780,7 @@ static int hls_window(AVFormatContext *s, int last)
if( hls->vtt_m3u8_name ) {
if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
goto fail;
avio_printf(sub_out, "#EXTM3U\n");
avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
if (hls->allowcache == 0 || hls->allowcache == 1) {
avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
}
avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
sequence);
write_m3u8_head_block(hls, sub_out, version, target_duration, sequence);
for (en = hls->segments; en; en = en->next) {
avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);