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player: avoid stalling when starting a network stream 

Starting a network stream could stall by executing uncacheable stream
control requests (STREAM_CTRL_GET_LANG and STREAM_CTRL_GET_DVD_INFO).
Being uncacheable means the player has to wait until the cache is done
reading the current block of data. These requests can't be cached
because they're too complicated, so the only way to avoid them is
special casing the DVD and Bluray streams (which are the only things
which need these requests), and not doing them in other cases.

(This is kind of inelegant, but so is the rest of the DVD/BD code.)
This commit is contained in:
wm4 2014-01-14 22:02:52 +01:00
parent a735a2abd7
commit 1bc1cd2305
3 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
player/loadfile.c
View File

@ -443,13 +443,16 @@ static struct track *add_stream_track(struct MPContext *mpctx,
track->preloaded = !!stream->sub->track;
// Needed for DVD and Blu-ray.
if (!track->lang) {
struct stream *st = track->demuxer->stream;
if (!track->lang && (st->uncached_type == STREAMTYPE_BLURAY ||
st->uncached_type == STREAMTYPE_DVD))
{
struct stream_lang_req req = {
.type = track->type,
.id = map_id_from_demuxer(track->demuxer, track->type,
track->demuxer_id)
};
stream_control(track->demuxer->stream, STREAM_CTRL_GET_LANG, &req);
stream_control(st, STREAM_CTRL_GET_LANG, &req);
if (req.name[0])
track->lang = talloc_strdup(track, req.name);
}
@ -472,6 +475,8 @@ static void add_dvd_tracks(struct MPContext *mpctx)
struct demuxer *demuxer = mpctx->demuxer;
struct stream *stream = demuxer->stream;
struct stream_dvd_info_req info;
if (stream->uncached_type != STREAMTYPE_DVD)
return;
if (stream_control(stream, STREAM_CTRL_GET_DVD_INFO, &info) > 0) {
for (int n = 0; n < info.num_subs; n++) {
struct track *track = talloc_ptrtype(NULL, track);

1
stream/stream.h
View File

@ -35,6 +35,7 @@ enum streamtype {
STREAMTYPE_RADIO,
STREAMTYPE_DVB,
STREAMTYPE_DVD,
STREAMTYPE_BLURAY,
STREAMTYPE_PVR,
STREAMTYPE_TV,
STREAMTYPE_MF,

1
stream/stream_bluray.c
View File

@ -390,6 +390,7 @@ err_no_info:
b->current_angle = angle;
b->current_title = title;
s->type = STREAMTYPE_BLURAY;
s->end_pos = title_size;
s->sector_size = BLURAY_SECTOR_SIZE;
s->flags = MP_STREAM_SEEK;