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queue2: Process SEEKING query

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Add QUERY_SEEKING handling to queue2, so RTMP live streams become
seekable when a queue2 in download or ringbuffer mode is inserted:

rtmpsrc ! queue2 ! flvdemux

https://bugzilla.gnome.org/show_bug.cgi?id=733351
This commit is contained in:
Jan Alexander Steffens (heftig) 2014-07-17 16:33:29 +02:00 committed by Sebastian Dröge
parent 805684585e
commit 7b0b93dafe
1 changed files with 49 additions and 0 deletions
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49
plugins/elements/gstqueue2.c
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@ -3092,6 +3092,55 @@ gst_queue2_handle_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
break;
}
case GST_QUERY_SEEKING:
{
gint64 segment_start, segment_end;
GstFormat format;
gboolean seekable, peer_success;
peer_success = gst_pad_peer_query (queue->sinkpad, query);
gst_query_parse_seeking (query, &format, &seekable, &segment_start,
&segment_end);
if (peer_success && seekable) {
GST_DEBUG_OBJECT (queue, "peer seekable (%s) from %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, gst_format_get_name (format),
segment_start, segment_end);
break;
}
if (format != GST_FORMAT_BYTES) {
GST_DEBUG_OBJECT (queue, "query in %s (not BYTES) format, cannot seek",
gst_format_get_name (format));
return FALSE;
}
GST_QUEUE2_MUTEX_LOCK (queue);
if (queue->current) {
if (QUEUE_IS_USING_RING_BUFFER (queue)) {
segment_start = queue->current->rb_offset;
segment_end = queue->current->rb_writing_pos;
} else if (QUEUE_IS_USING_TEMP_FILE (queue)) {
segment_start = queue->current->offset;
segment_end = queue->current->writing_pos;
} else {
segment_start = -1;
segment_end = -1;
}
}
GST_QUEUE2_MUTEX_UNLOCK (queue);
seekable = ! !(segment_start < segment_end);
GST_DEBUG_OBJECT (queue, "segment from %" G_GINT64_FORMAT " to %"
G_GINT64_FORMAT " %sseekable", segment_start, segment_end,
seekable ? "" : "not ");
gst_query_set_seeking (query, format, seekable, segment_start,
segment_end);
break;
}
default:
/* peer handled other queries */
if (!gst_pad_query_default (pad, parent, query))