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hlsdemux: Fallback to previous playlist when switching if the new playlist can't be fetched

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Youness Alaoui 2011-09-15 20:47:54 -04:00 committed by Thibault Saunier
parent f805f9e079
commit 87d10cf683
1 changed files with 26 additions and 14 deletions
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30
gst/hls/gsthlsdemux.c
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@ -969,22 +969,24 @@ gst_hls_demux_update_playlist (GstHLSDemux * demux)
GST_WARNING_OBJECT (demux, "Couldn't not validate playlist encoding");
return FALSE;
}
gst_m3u8_client_update (demux->client, playlist);
return TRUE;
return gst_m3u8_client_update (demux->client, playlist);
}
static gboolean
gst_hls_demux_change_playlist (GstHLSDemux * demux, gboolean is_fast)
{
GList *list;
GList *previous_list;
GstStructure *s;
gint new_bandwidth;
GST_M3U8_CLIENT_LOCK (demux->client);
previous_list = demux->client->main->current_variant;
if (is_fast)
list = g_list_next (demux->client->main->current_variant);
list = g_list_next (previous_list);
else
list = g_list_previous (demux->client->main->current_variant);
list = g_list_previous (previous_list);
/* Don't do anything else if the playlist is the same */
if (!list || list->data == demux->client->current) {
@ -1001,15 +1003,23 @@ gst_hls_demux_change_playlist (GstHLSDemux * demux, gboolean is_fast)
new_bandwidth = demux->client->current->bandwidth;
GST_M3U8_CLIENT_UNLOCK (demux->client);
gst_hls_demux_update_playlist (demux);
GST_INFO_OBJECT (demux, "Client is %s, switching to bitrate %d",
is_fast ? "fast" : "slow", new_bandwidth);
if (gst_hls_demux_update_playlist (demux)) {
s = gst_structure_new ("playlist",
"uri", G_TYPE_STRING, gst_m3u8_client_get_current_uri (demux->client),
"bitrate", G_TYPE_INT, new_bandwidth, NULL);
gst_element_post_message (GST_ELEMENT_CAST (demux),
gst_message_new_element (GST_OBJECT_CAST (demux), s));
} else {
GST_INFO_OBJECT (demux, "Unable to update playlist. Switching back");
GST_M3U8_CLIENT_LOCK (demux->client);
demux->client->main->current_variant = previous_list;
GST_M3U8_CLIENT_UNLOCK (demux->client);
gst_m3u8_client_set_current (demux->client, previous_list->data);
return FALSE;
}
/* Force typefinding since we might have changed media type */
demux->do_typefind = TRUE;
@ -1072,17 +1082,19 @@ gst_hls_demux_switch_playlist (GstHLSDemux * demux)
/* if we are on time switch to a higher bitrate */
if (diff > limit) {
while (diff > limit) {
gst_hls_demux_change_playlist (demux, TRUE);
if (!gst_hls_demux_change_playlist (demux, TRUE))
break;
diff -= limit;
}
demux->accumulated_delay = 0;
} else if (diff < 0) {
/* if the client is too slow wait until it has accumulated a certain delay to
* switch to a lower bitrate */
/* if the client is too slow wait until it has accumulated a certain delay
* to switch to a lower bitrate */
demux->accumulated_delay -= diff;
if (demux->accumulated_delay >= limit) {
while (demux->accumulated_delay >= limit) {
gst_hls_demux_change_playlist (demux, FALSE);
if (!gst_hls_demux_change_playlist (demux, FALSE))
break;
demux->accumulated_delay -= limit;
}
demux->accumulated_delay = 0;