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Code Issues Releases Activity

avformat/hls: Factor playlist need check to a common function

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This commit is contained in:
Anssi Hannula 2017-11-19 19:30:02 +02:00
parent 1204ce0b63
commit 1dff9adcb9
1 changed files with 30 additions and 22 deletions
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52
libavformat/hls.c
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@ -111,7 +111,7 @@ struct playlist {
int start_seq_no;
int n_segments;
struct segment **segments;
int needed, cur_needed;
int needed;
int cur_seq_no;
int64_t cur_seg_offset;
int64_t last_load_time;
@ -1258,11 +1258,31 @@ static int64_t default_reload_interval(struct playlist *pls)
pls->target_duration;
}
static int playlist_needed(struct playlist *pls)
{
int i;
/* If there is no context or streams yet, the playlist is needed */
if (!pls->ctx || !pls->n_main_streams)
return 1;
/* check if any of the streams in the playlist are needed */
for (i = 0; i < pls->n_main_streams; i++) {
if (pls->main_streams[i]->discard < AVDISCARD_ALL) {
/* some stream needed => playlist needed */
return 1;
}
}
/* No streams were needed */
return 0;
}
static int read_data(void *opaque, uint8_t *buf, int buf_size)
{
struct playlist *v = opaque;
HLSContext *c = v->parent->priv_data;
int ret, i;
int ret;
int just_opened = 0;
int reload_count = 0;
@ -1276,15 +1296,8 @@ restart:
/* Check that the playlist is still needed before opening a new
* segment. */
if (v->ctx && v->ctx->nb_streams) {
v->needed = 0;
for (i = 0; i < v->n_main_streams; i++) {
if (v->main_streams[i]->discard < AVDISCARD_ALL) {
v->needed = 1;
break;
}
}
}
v->needed = playlist_needed(v);
if (!v->needed) {
av_log(v->parent, AV_LOG_INFO, "No longer receiving playlist %d\n",
v->index);
@ -1841,20 +1854,15 @@ static int recheck_discard_flags(AVFormatContext *s, int first)
{
HLSContext *c = s->priv_data;
int i, changed = 0;
int cur_needed;
/* Check if any new streams are needed */
for (i = 0; i < c->n_playlists; i++)
c->playlists[i]->cur_needed = 0;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
struct playlist *pls = c->playlists[s->streams[i]->id];
if (st->discard < AVDISCARD_ALL)
pls->cur_needed = 1;
}
for (i = 0; i < c->n_playlists; i++) {
struct playlist *pls = c->playlists[i];
if (pls->cur_needed && !pls->needed) {
cur_needed = playlist_needed(c->playlists[i]);
if (cur_needed && !pls->needed) {
pls->needed = 1;
changed = 1;
pls->cur_seq_no = select_cur_seq_no(c, pls);
@ -1866,7 +1874,7 @@ static int recheck_discard_flags(AVFormatContext *s, int first)
pls->seek_stream_index = -1;
}
av_log(s, AV_LOG_INFO, "Now receiving playlist %d, segment %d\n", i, pls->cur_seq_no);
} else if (first && !pls->cur_needed && pls->needed) {
} else if (first && !cur_needed && pls->needed) {
if (pls->input)
ff_format_io_close(pls->parent, &pls->input);
pls->needed = 0;