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gst/realmedia/rmdemux.*: Remember first timestamp encountered in stream and re-timestamp stream to start from zero (f...

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Original commit message from CVS:
* gst/realmedia/rmdemux.c: (gst_rmdemux_init),
(gst_rmdemux_sink_event), (gst_rmdemux_perform_seek),
(gst_rmdemux_reset), (gst_rmdemux_chain), (gst_rmdemux_add_stream),
(gst_rmdemux_parse_packet):
* gst/realmedia/rmdemux.h:
Remember first timestamp encountered in stream and re-timestamp
stream to start from zero (fixes #397219); only send one newsegment
event, not two; when seeking, send newsegment events from the
streaming thread and not from the seeking thread.
This commit is contained in:
Tim-Philipp Müller 2007-05-16 19:07:45 +00:00
parent 971b4e3614
commit 286a2c0edb
3 changed files with 73 additions and 37 deletions
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12
ChangeLog
View file

@ -1,3 +1,15 @@
2007-05-16 Tim-Philipp Müller <tim at centricular dot net>
* gst/realmedia/rmdemux.c: (gst_rmdemux_init),
(gst_rmdemux_sink_event), (gst_rmdemux_perform_seek),
(gst_rmdemux_reset), (gst_rmdemux_chain), (gst_rmdemux_add_stream),
(gst_rmdemux_parse_packet):
* gst/realmedia/rmdemux.h:
Remember first timestamp encountered in stream and re-timestamp
stream to start from zero (fixes #397219); only send one newsegment
event, not two; when seeking, send newsegment events from the
streaming thread and not from the seeking thread.
2007-05-16 Tim-Philipp Müller <tim at centricular dot net>
Based on patch by: Mark Nauwelaerts <manauw skynet be>

90
gst/realmedia/rmdemux.c
View file

@ -1,4 +1,4 @@
/* GStreamer
/* GStreamer RealMedia demuxer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003> David A. Schleef <ds@schleef.org>
* Copyright (C) <2004> Stephane Loeuillet <gstreamer@leroutier.net>
@ -77,6 +77,8 @@ struct _GstRMDemuxStream
gboolean needs_descrambling;
guint subpackets_needed; /* subpackets needed for descrambling */
GPtrArray *subpackets; /* array containing subpacket GstBuffers */
GstTagList *pending_tags;
};
struct _GstRMDemuxIndex
@ -244,29 +246,31 @@ gst_rmdemux_init (GstRMDemux * rmdemux)
gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
rmdemux->adapter = gst_adapter_new ();
rmdemux->first_ts = GST_CLOCK_TIME_NONE;
rmdemux->need_newsegment = TRUE;
}
static gboolean
gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret = TRUE;
GstRMDemux *rmdemux;
gboolean ret;
#ifndef GST_DISABLE_GST_DEBUG
GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
#endif
rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
GST_LOG_OBJECT (rmdemux, "Event on sink: NEWSEGMENT");
gst_event_unref (event);
ret = TRUE;
break;
default:
GST_LOG_OBJECT (rmdemux, "Event on sink: type=%d",
GST_EVENT_TYPE (event));
ret = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (rmdemux);
return ret;
}
@ -562,23 +566,14 @@ gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
/* now we have a new position, prepare for streaming again */
{
GstEvent *event;
/* Reset the demuxer state */
rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
if (flush)
gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
/* create the discont event we are going to send out */
event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
rmdemux->segment.format, rmdemux->segment.start,
rmdemux->segment.stop, rmdemux->segment.time);
GST_DEBUG_OBJECT (rmdemux,
"sending NEWSEGMENT event to all src pads with segment.start= %"
GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
gst_rmdemux_send_event (rmdemux, event);
/* must send newsegment event from streaming thread, so just set flag */
rmdemux->need_newsegment = TRUE;
/* notify start of new segment */
if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
@ -586,6 +581,7 @@ gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
GST_FORMAT_TIME, rmdemux->segment.last_stop));
}
/* restart our task since it might have been stopped when we did the
* flush. */
gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
@ -685,6 +681,8 @@ gst_rmdemux_reset (GstRMDemux * rmdemux)
gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
if (stream->pending_tags)
gst_tag_list_free (stream->pending_tags);
if (stream->subpackets)
g_ptr_array_free (stream->subpackets, TRUE);
g_free (stream->index);
@ -700,6 +698,8 @@ gst_rmdemux_reset (GstRMDemux * rmdemux)
rmdemux->have_pads = FALSE;
gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
rmdemux->first_ts = GST_CLOCK_TIME_NONE;
rmdemux->need_newsegment = TRUE;
}
static GstStateChangeReturn
@ -1084,18 +1084,14 @@ gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
{
/* If we haven't already done so then signal there are no more pads */
if (!rmdemux->have_pads) {
GST_LOG_OBJECT (rmdemux, "no more pads");
gst_element_no_more_pads (GST_ELEMENT (rmdemux));
rmdemux->have_pads = TRUE;
GST_LOG_OBJECT (rmdemux, "no more pads.");
gst_rmdemux_send_event (rmdemux,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
(gint64) 0, (gint64) - 1, 0));
}
/* The actual header is only 8 bytes */
rmdemux->size = DATA_SIZE;
GST_DEBUG_OBJECT (rmdemux, "data available %d",
GST_LOG_OBJECT (rmdemux, "data available %d",
gst_adapter_available (rmdemux->adapter));
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
@ -1444,16 +1440,11 @@ gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
gst_pad_set_active (stream->pad, TRUE);
gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
gst_pad_push_event (stream->pad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, (gint64) 0,
(gint64) - 1, 0));
if (codec_name && codec_tag) {
GstTagList *tags = NULL;
tags = gst_tag_list_new ();
gst_tag_list_add (tags, GST_TAG_MERGE_KEEP, codec_tag, codec_name, NULL);
gst_element_found_tags_for_pad (GST_ELEMENT (rmdemux), stream->pad, tags);
/* save for later, we must send the tags after the newsegment event */
if (codec_name != NULL && codec_tag != NULL) {
stream->pending_tags = gst_tag_list_new ();
gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
codec_tag, codec_name, NULL);
}
}
@ -1988,6 +1979,33 @@ gst_rmdemux_parse_packet (GstRMDemux * rmdemux, const guint8 * data,
if (!stream || !stream->pad)
goto unknown_stream;
if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
rmdemux->first_ts = timestamp;
}
if (rmdemux->need_newsegment) {
GstEvent *event;
event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
rmdemux->segment.format, rmdemux->segment.start,
rmdemux->segment.stop, rmdemux->segment.time);
GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
gst_rmdemux_send_event (rmdemux, event);
rmdemux->need_newsegment = FALSE;
}
if (stream->pending_tags != NULL) {
GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
stream->pending_tags);
stream->pending_tags = NULL;
}
if ((rmdemux->offset + packet_size) <= stream->seek_offset) {
GST_DEBUG_OBJECT (rmdemux,
"Stream %d is skipping: seek_offset=%d, offset=%d, packet_size=%u",
@ -2004,7 +2022,7 @@ gst_rmdemux_parse_packet (GstRMDemux * rmdemux, const guint8 * data,
goto alloc_failed;
memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, packet_size);
GST_BUFFER_TIMESTAMP (buffer) = timestamp;
GST_BUFFER_TIMESTAMP (buffer) = timestamp - rmdemux->first_ts;
if (stream->needs_descrambling) {
ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);

8
gst/realmedia/rmdemux.h
View file

@ -1,4 +1,4 @@
/* GStreamer
/* GStreamer RealMedia demuxer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
@ -106,9 +106,15 @@ struct _GstRMDemux {
gboolean segment_running;
gboolean running;
/* Whether we need to send a newsegment event */
gboolean need_newsegment;
/* Current timestamp */
GstClockTime cur_timestamp;
/* First timestamp */
GstClockTime first_ts;
int n_chunks;
int chunk_index;