hlsdemux2: Fix crash on live playlist with single entry

If there is a single entry, we would end up computing a minimum distance of 0,
and would therefore read entries from after the segment array

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3024>

diff --git a/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/m3u8.c b/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/m3u8.c
index cc2fdce..3a68d16 100644 (file)
--- a/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/m3u8.c
+++ b/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/m3u8.c
@@ -1459,7 +1459,7 @@ gst_hls_media_playlist_get_seek_range (GstHLSMediaPlaylist * m3u8,
   first = g_ptr_array_index (m3u8->segments, 0);
   *start = first->stream_time;
 
-  if (GST_HLS_MEDIA_PLAYLIST_IS_LIVE (m3u8)) {
+  if (GST_HLS_MEDIA_PLAYLIST_IS_LIVE (m3u8) && m3u8->segments->len > 1) {
     /* min_distance is used to make sure the seek range is never closer than
        GST_M3U8_LIVE_MIN_FRAGMENT_DISTANCE fragments from the end of a live
        playlist - see 6.3.3. "Playing the Playlist file" of the HLS draft */