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ext/ogg/gstoggdemux.c: Make seeking sort-of exact again (fixes #156387).

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Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_src_event),
(gst_ogg_demux_push):
Make seeking sort-of exact again (fixes #156387).
This commit is contained in:
Ronald S. Bultje 2004-10-29 15:59:37 +00:00
parent 2070a88585
commit 477d4ee09b
2 changed files with 75 additions and 24 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
2004-10-29 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_src_event),
(gst_ogg_demux_push):
Make seeking sort-of exact again (fixes #156387).
2004-10-29 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/playback/gstplaybasebin.c: (unknown_type),

83
ext/ogg/gstoggdemux.c
View file

@ -154,7 +154,9 @@ struct _GstOggDemux
GstOggPad *seek_pad;
gint64 seek_to;
gint64 seek_skipped;
guint64 seek_offset;
GstFormat seek_format;
gint seek_try;
};
struct _GstOggDemuxClass
@ -486,7 +488,7 @@ gst_ogg_demux_src_event (GstPad * pad, GstEvent * event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
gint64 offset, position, total;
gint64 offset, position, total, seek_offset;
GstFormat format, my_format;
gboolean res;
@ -550,19 +552,22 @@ gst_ogg_demux_src_event (GstPad * pad, GstEvent * event)
position = 0;
else if (position > total)
position = total;
if (gst_file_pad_seek (ogg->sinkpad,
gst_file_pad_get_length (ogg->sinkpad) *
((gdouble) position) / ((gdouble) total),
seek_offset = gst_file_pad_get_length (ogg->sinkpad) *
((gdouble) position) / ((gdouble) total);
if (gst_file_pad_seek (ogg->sinkpad, seek_offset,
GST_SEEK_METHOD_SET) != 0)
goto error;
ogg->seek_try = 1;
ogg_sync_clear (&ogg->sync);
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_PLAY);
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_SEEK);
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad,
pad->flags |= GST_OGG_PAD_NEEDS_DISCONT;);
pad->flags |= GST_OGG_PAD_NEEDS_DISCONT;
);
if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH) {
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad,
pad->flags |= GST_OGG_PAD_NEEDS_FLUSH;);
pad->flags |= GST_OGG_PAD_NEEDS_FLUSH;
);
}
GST_DEBUG_OBJECT (ogg,
"initiating seeking to format %d, offset %" G_GUINT64_FORMAT, format,
@ -570,8 +575,9 @@ gst_ogg_demux_src_event (GstPad * pad, GstEvent * event)
/* store format and position we seek to */
ogg->seek_pad = cur;
ogg->seek_to = offset;
ogg->seek_format = format;
ogg->seek_to = position;
ogg->seek_format = GST_FORMAT_TIME;
ogg->seek_offset = seek_offset;
gst_event_unref (event);
return TRUE;
@ -636,7 +642,8 @@ gst_ogg_demux_handle_event (GstPad * pad, GstEvent * event)
gst_event_unref (event);
GST_FLAG_UNSET (ogg, GST_OGG_FLAG_WAIT_FOR_DISCONT);
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad,
pad->flags |= GST_OGG_PAD_NEEDS_DISCONT;);
pad->flags |= GST_OGG_PAD_NEEDS_DISCONT;
);
break;
default:
gst_pad_event_default (pad, event);
@ -922,7 +929,8 @@ _find_chain_get_unknown_part (GstOggDemux * ogg, gint64 * start, gint64 * end)
*end = G_MAXINT64;
g_assert (ogg->current_chain >= 0);
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad, *start = MAX (*start, pad->end_offset););
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad, *start = MAX (*start, pad->end_offset);
);
if (ogg->setup_state == SETUP_FIND_LAST_CHAIN) {
*end = gst_file_pad_get_length (ogg->sinkpad);
@ -1051,7 +1059,8 @@ _find_streams_check (GstOggDemux * ogg)
} else {
endpos = G_MAXINT64;
FOR_PAD_IN_CHAIN (ogg, pad, ogg->chains->len - 1,
endpos = MIN (endpos, pad->start_offset););
endpos = MIN (endpos, pad->start_offset);
);
}
if (!ogg->seek_skipped || gst_ogg_demux_position (ogg) >= endpos) {
/* have we found the endposition for all streams yet? */
@ -1324,29 +1333,65 @@ gst_ogg_demux_push (GstOggDemux * ogg, ogg_page * page)
"in seek - offset now: %" G_GUINT64_FORMAT
" (pad %d) - desired offset %" G_GUINT64_FORMAT " (pad %d)",
cur->known_offset, cur->serial, ogg->seek_to, ogg->seek_pad->serial);
if (cur == ogg->seek_pad) {
gint64 position;
if (cur != ogg->seek_pad) {
break;
} else {
gint64 position, diff, start;
gdouble ratio;
if (ogg->seek_try > 5) {
GST_DEBUG ("Seeking took too long, continuing with current page");
goto play;
}
position = ogg_page_granulepos (page);
/* see if we reached the destination position when seeking */
if (ogg->seek_format != GST_FORMAT_DEFAULT) {
if (GST_PAD_PEER (cur->pad)
&& !gst_pad_convert (GST_PAD_PEER (cur->pad), GST_FORMAT_DEFAULT,
position, &ogg->seek_format, &position)) {
&& (!gst_pad_convert (GST_PAD_PEER (cur->pad),
GST_FORMAT_DEFAULT,
position, &ogg->seek_format, &position) ||
!gst_pad_convert (GST_PAD_PEER (cur->pad),
GST_FORMAT_DEFAULT,
cur->start, &ogg->seek_format, &start))) {
/* let's just stop then */
position = G_MAXINT64;
goto play;
}
}
if (position >= ogg->seek_to) {
/* fairly random treshold. */
position -= start;
if (ogg->seek_to > position)
diff = ogg->seek_to - position;
else
diff = position - ogg->seek_to;
if (diff < GST_SECOND) {
GST_DEBUG ("Close enough (%" GST_TIME_FORMAT " seconds off)",
GST_TIME_ARGS (diff));
goto play;
}
/* seek again! yay */
ratio = (gdouble) ogg->seek_to / position;
ogg->seek_offset = ogg->seek_offset * ratio;
if (gst_file_pad_seek (ogg->sinkpad, ogg->seek_offset,
GST_SEEK_METHOD_SET) != 0) {
goto play;
}
ogg->seek_try++;
ogg_sync_clear (&ogg->sync);
return;
play:
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_PLAY);
GST_DEBUG_OBJECT (ogg,
"ended seek at offset %" G_GUINT64_FORMAT " (requested %"
G_GUINT64_FORMAT, cur->known_offset, ogg->seek_to);
ogg->seek_pad = NULL;
ogg->seek_to = 0;
}
ogg->seek_try = 0;
}
/* fallthrough */
case GST_OGG_STATE_PLAY: