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hlsdemux: Start downloading the next fragment immediately after caching the initial fragments

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And only afterwards wait until a fragment was played. Otherwise we're keeping
our cache most of the time at "fragments-cache" fragments minus one.

Also allow setting "fragments-cache" to 1 now to start playback even faster.
This commit is contained in:
Sebastian Dröge 2014-02-10 18:29:23 +01:00
parent 4f04f3e68e
commit 73d9a8b0c9
1 changed files with 42 additions and 34 deletions
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74
ext/hls/gsthlsdemux.c
View file

@ -184,7 +184,7 @@ gst_hls_demux_class_init (GstHLSDemuxClass * klass)
g_object_class_install_property (gobject_class, PROP_FRAGMENTS_CACHE,
g_param_spec_uint ("fragments-cache", "Fragments cache",
"Number of fragments needed to be cached to start playing",
2, G_MAXUINT, DEFAULT_FRAGMENTS_CACHE,
1, G_MAXUINT, DEFAULT_FRAGMENTS_CACHE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BITRATE_LIMIT,
@ -696,7 +696,7 @@ switch_pads (GstHLSDemux * demux, GstCaps * newcaps)
static void
gst_hls_demux_stream_loop (GstHLSDemux * demux)
{
GstFragment *fragment;
GstFragment *fragment = NULL;
GstBuffer *buf;
GstFlowReturn ret;
GstCaps *bufcaps, *srccaps = NULL;
@ -712,19 +712,26 @@ gst_hls_demux_stream_loop (GstHLSDemux * demux)
if (!gst_hls_demux_cache_fragments (demux))
goto cache_error;
/* Pop off the first fragment immediately so the
* update task can get the next one already */
fragment = g_queue_pop_head (demux->queue);
/* we can start now the updates thread (only if on playing) */
gst_task_start (demux->updates_task);
GST_INFO_OBJECT (demux, "First fragments cached successfully");
}
if (g_queue_is_empty (demux->queue)) {
if (!fragment && g_queue_is_empty (demux->queue)) {
if (demux->end_of_playlist)
goto end_of_playlist;
goto pause_task;
}
/* If we didn't get our fragment above already */
if (!fragment)
fragment = g_queue_pop_head (demux->queue);
buf = gst_fragment_get_buffer (fragment);
/* Figure out if we need to create/switch pads */
@ -874,6 +881,34 @@ gst_hls_demux_updates_loop (GstHLSDemux * demux)
if (demux->cancelled)
goto quit;
/* fetch the next fragment */
if (g_queue_get_length (demux->queue) < demux->fragments_cache) {
GST_DEBUG_OBJECT (demux, "queue not full, get next fragment");
if (!gst_hls_demux_get_next_fragment (demux, FALSE)) {
if (demux->cancelled) {
goto quit;
} else if (!demux->end_of_playlist) {
demux->client->update_failed_count++;
if (demux->client->update_failed_count < DEFAULT_FAILED_COUNT) {
GST_WARNING_OBJECT (demux, "Could not fetch the next fragment");
continue;
} else {
GST_ELEMENT_ERROR (demux, RESOURCE, NOT_FOUND,
("Could not fetch the next fragment"), (NULL));
goto error;
}
}
} else {
demux->client->update_failed_count = 0;
if (demux->cancelled)
goto quit;
/* try to switch to another bitrate if needed */
gst_hls_demux_switch_playlist (demux);
}
}
/* schedule the next update */
gst_hls_demux_schedule (demux);
@ -919,34 +954,6 @@ gst_hls_demux_updates_loop (GstHLSDemux * demux)
if (demux->cancelled)
goto quit;
/* fetch the next fragment */
if (g_queue_get_length (demux->queue) < demux->fragments_cache) {
GST_DEBUG_OBJECT (demux, "queue empty, get next fragment");
if (!gst_hls_demux_get_next_fragment (demux, FALSE)) {
if (demux->cancelled) {
goto quit;
} else if (!demux->end_of_playlist) {
demux->client->update_failed_count++;
if (demux->client->update_failed_count < DEFAULT_FAILED_COUNT) {
GST_WARNING_OBJECT (demux, "Could not fetch the next fragment");
continue;
} else {
GST_ELEMENT_ERROR (demux, RESOURCE, NOT_FOUND,
("Could not fetch the next fragment"), (NULL));
goto error;
}
}
} else {
demux->client->update_failed_count = 0;
if (demux->cancelled)
goto quit;
/* try to switch to another bitrate if needed */
gst_hls_demux_switch_playlist (demux);
}
}
}
quit:
@ -1025,11 +1032,12 @@ gst_hls_demux_cache_fragments (GstHLSDemux * demux)
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_buffering (GST_OBJECT (demux), 100));
demux->next_update = g_get_monotonic_time ();
/* Start downloading 1s early to keep the risk of
* underflows lower */
demux->next_update = g_get_monotonic_time () - G_USEC_PER_SEC;
demux->need_cache = FALSE;
return TRUE;
}
static gchar *