mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-07-26 08:18:22 +00:00
Code Issues 1 Projects Releases Wiki Activity

oggdemux: implement seeking in pushmode

Browse source 
Convert seek requests to bytes using the bitrate and forward them upstream. Does
not quite work because the flushing and resyncing is not implemented yet.
This commit is contained in:
Wim Taymans 2010-04-30 18:37:17 +02:00
parent d9b7003926
commit c4ec1c4c62
1 changed files with 42 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
ext/ogg/gstoggdemux.c
View file

@ -1046,6 +1046,13 @@ gst_ogg_chain_free (GstOggChain * chain)
g_free (chain);
}
static void
gst_ogg_pad_mark_discont (GstOggPad * pad)
{
pad->discont = TRUE;
pad->map.last_size = 0;
}
static void
gst_ogg_chain_mark_discont (GstOggChain * chain)
{
@ -1054,8 +1061,7 @@ gst_ogg_chain_mark_discont (GstOggChain * chain)
for (i = 0; i < chain->streams->len; i++) {
GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
pad->discont = TRUE;
pad->map.last_size = 0;
gst_ogg_pad_mark_discont (pad);
}
}
@ -1087,8 +1093,7 @@ gst_ogg_chain_new_stream (GstOggChain * chain, glong serialno)
gst_object_sink (ret);
GST_PAD_DIRECTION (ret) = GST_PAD_SRC;
ret->discont = TRUE;
ret->map.last_size = 0;
gst_ogg_pad_mark_discont (ret);
ret->chain = chain;
ret->ogg = chain->ogg;
@ -1640,8 +1645,7 @@ gst_ogg_demux_activate_chain (GstOggDemux * ogg, GstOggChain * chain,
GST_DEBUG_OBJECT (ogg, "adding pad %" GST_PTR_FORMAT, pad);
/* mark discont */
pad->discont = TRUE;
pad->map.last_size = 0;
gst_ogg_pad_mark_discont (pad);
pad->last_ret = GST_FLOW_OK;
pad->added = TRUE;
@ -2261,10 +2265,37 @@ no_chain:
static gboolean
gst_ogg_demux_perform_seek_push (GstOggDemux * ogg, GstEvent * event)
{
/* can't seek if we are not pullmode, FIXME could pass the
* seek query upstream after converting it to bytes using
* the average bitrate of the stream. */
return FALSE;
gint bitrate;
gboolean res;
bitrate = ogg->bitrate;
if (bitrate > 0) {
GstFormat format;
gdouble rate;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
GstEvent *sevent;
gst_event_parse_seek (event, &rate, &format, &flags,
&start_type, &start, &stop_type, &stop);
/* convert the seek positions to bytes */
if (start_type != GST_SEEK_TYPE_NONE) {
start = gst_util_uint64_scale (start, bitrate, 8 * GST_SECOND);
}
if (stop_type != GST_SEEK_TYPE_NONE) {
stop = gst_util_uint64_scale (stop, bitrate, 8 * GST_SECOND);
}
sevent = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
start_type, start, stop_type, stop);
res = gst_pad_push_event (ogg->sinkpad, sevent);
} else {
res = FALSE;
}
return res;
}
static gboolean
@ -2284,7 +2315,7 @@ gst_ogg_demux_perform_seek (GstOggDemux * ogg, GstEvent * event)
/* finds each bitstream link one at a time using a bisection search
* (has to begin by knowing the offset of the lb's initial page).
* Recurses for each link so it can alloc the link storage after
* finding them all, then unroll and fill the cache at the same time
* finding them all, then unroll and fill the cache at the same time
*/
static GstFlowReturn
gst_ogg_demux_bisect_forward_serialno (GstOggDemux * ogg,