hlsdemux: Extract ID3 tags, strip them from the output and provide them as tags

They often don't only contain the PCR information but also other
metadata, like title. Give this information to the pipeline.

Also strip the tags from the stream as we a) already parsed them now and
b) decoders don't like these tags to happen in the middle of the stream
(i.e. the start of each fragment) and tagdemux only can strip them off
the beginning and end.

1 files changed, 7 insertions, 2 deletions

diff --git a/ext/hls/gsthlsdemux.c b/ext/hls/gsthlsdemux.c
index 9247d45c3..3e82d58e9 100644
--- a/ext/hls/gsthlsdemux.c
+++ b/ext/hls/gsthlsdemux.c
@@ -767,6 +767,7 @@ gst_hls_demux_handle_buffer (GstAdaptiveDemux * demux,
   GstHLSDemux *hlsdemux = GST_HLS_DEMUX_CAST (demux);
   GstMapInfo info;
   GstClockTime first_pcr, last_pcr;
+  GstTagList *tags;
 
   if (buffer == NULL)
     return GST_FLOW_OK;
@@ -832,14 +833,18 @@ gst_hls_demux_handle_buffer (GstAdaptiveDemux * demux,
     hls_stream->pending_pcr_buffer = NULL;
   }
 
-  if (!gst_hlsdemux_tsreader_find_pcrs (&hls_stream->tsreader, buffer,
-          &first_pcr, &last_pcr)
+  if (!gst_hlsdemux_tsreader_find_pcrs (&hls_stream->tsreader, &buffer,
+          &first_pcr, &last_pcr, &tags)
       && !at_eos) {
     // Store this buffer for later
     hls_stream->pending_pcr_buffer = buffer;
     return GST_FLOW_OK;
   }
 
+  if (tags) {
+    gst_adaptive_demux_stream_set_tags (stream, tags);
+  }
+
   if (buffer) {
     buffer = gst_buffer_make_writable (buffer);
     GST_BUFFER_OFFSET (buffer) = hls_stream->current_offset;