demux: propagate streaming flag through demux_timeline

Before this commit, EDL or CUE files did not properly enable the cache
if they were on "slow" media (stream->streaming==true). This happened
because the stream is unset for demux_timeline, so the streaming flag
could not be queried anymore.

Fix this by adding this flag to struct demuxer, and propagate it exactly
like the is_network flag. is_network is not used for checking the cache
options anymore, and its main function seems to be something else.
Normal http streams set the streaming flag already.

This should fix #6958.

3 files changed, 10 insertions, 3 deletions

diff --git a/demux/demux.c b/demux/demux.c
index 4cefd1e0dc..2b1f7d5625 100644
--- a/demux/demux.c
+++ b/demux/demux.c
@@ -2385,8 +2385,7 @@ static void update_opts(struct demux_internal *in)
     in->max_bytes_bw = opts->max_bytes_bw;
 
     int seekable = opts->seekable_cache;
-    bool is_streaming = in->d_thread->is_network ||
-        (in->d_thread->stream && in->d_thread->stream->streaming);
+    bool is_streaming = in->d_thread->is_streaming;
     bool use_cache = is_streaming;
     if (opts->enable_cache >= 0)
         use_cache = opts->enable_cache == 1;
@@ -2882,6 +2881,7 @@ static void demux_copy(struct demuxer *dst, struct demuxer *src)
     dst->start_time = src->start_time;
     dst->duration = src->duration;
     dst->is_network = src->is_network;
+    dst->is_streaming = src->is_streaming;
     dst->priv = src->priv;
     dst->metadata = mp_tags_dup(dst, src->metadata);
 }
@@ -3132,6 +3132,7 @@ bool demux_is_network_cached(demuxer_t *demuxer)
 struct parent_stream_info {
     bool seekable;
     bool is_network;
+    bool is_streaming;
     struct mp_cancel *cancel;
     char *filename;
 };
@@ -3162,6 +3163,7 @@ static struct demuxer *open_given_type(struct mpv_global *global,
         .glog = log,
         .filename = talloc_strdup(demuxer, sinfo->filename),
         .is_network = sinfo->is_network,
+        .is_streaming = sinfo->is_streaming,
         .access_references = opts->access_references,
         .events = DEMUX_EVENT_ALL,
         .duration = -1,
@@ -3290,6 +3292,7 @@ static struct demuxer *demux_open(struct stream *stream,
     struct parent_stream_info sinfo = {
         .seekable = stream->seekable,
         .is_network = stream->is_network,
+        .is_streaming = stream->streaming,
         .cancel = cancel,
         .filename = talloc_strdup(NULL, stream->url),
     };
diff --git a/demux/demux.h b/demux/demux.h
index ebebd0853f..6ffd5587ec 100644
--- a/demux/demux.h
+++ b/demux/demux.h
@@ -193,6 +193,7 @@ typedef struct demuxer {
     // Typical examples: text subtitles, playlists
     bool fully_read;
     bool is_network; // opened directly from a network stream
+    bool is_streaming; // implies a "slow" input, such as network or FUSE
     bool access_references; // allow opening other files/URLs
 
     // Bitmask of DEMUX_EVENT_*
diff --git a/demux/demux_timeline.c b/demux/demux_timeline.c
index 8237a69a0f..b18ae70faa 100644
--- a/demux/demux_timeline.c
+++ b/demux/demux_timeline.c
@@ -591,8 +591,10 @@ static bool add_tl(struct demuxer *demuxer, struct timeline_par *tl)
 
         // demux_timeline already does caching, doing it for the sub-demuxers
         // would be pointless and wasteful.
-        if (part->source)
+        if (part->source) {
             demuxer->is_network |= part->source->is_network;
+            demuxer->is_streaming |= part->source->is_streaming;
+        }
 
         struct segment *seg = talloc_ptrtype(src, seg);
         *seg = (struct segment){
@@ -611,6 +613,7 @@ static bool add_tl(struct demuxer *demuxer, struct timeline_par *tl)
     }
 
     demuxer->is_network |= tl->track_layout->is_network;
+    demuxer->is_streaming |= tl->track_layout->is_streaming;
     return true;
 }