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composition: Start implementing seeking in a GSource

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This commit is contained in:
Thibault Saunier 2014-07-01 18:08:32 +02:00
parent 5faa417583
commit bb7fa996b4
1 changed files with 87 additions and 60 deletions
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147
gnl/gnlcomposition.c
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@ -76,6 +76,12 @@ enum
typedef struct _GnlCompositionEntry GnlCompositionEntry;
typedef struct
{
GnlComposition *comp;
GstEvent *event;
} SeekData;
struct _GnlCompositionPrivate
{
gboolean dispose_has_run;
@ -214,6 +220,8 @@ static gboolean lock_child_state (GValue * item, GValue * ret,
gpointer udata G_GNUC_UNUSED);
static gboolean
set_child_caps (GValue * item, GValue * ret G_GNUC_UNUSED, GnlObject * comp);
static GstEvent *get_new_seek_event (GnlComposition * comp, gboolean initial,
gboolean updatestoponly);
/* COMP_REAL_START: actual position to start current playback at. */
@ -400,6 +408,66 @@ join_failed:
return res;
}
static gboolean
_seek_pipeline_func (SeekData * seekd)
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
gint64 cur, stop;
GnlCompositionPrivate *priv = seekd->comp->priv;
gst_event_parse_seek (seekd->event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
GST_DEBUG_OBJECT (seekd->comp,
"start:%" GST_TIME_FORMAT " -- stop:%" GST_TIME_FORMAT " flags:%d",
GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), flags);
gst_segment_do_seek (priv->segment,
rate, format, flags, cur_type, cur, stop_type, stop, NULL);
gst_segment_do_seek (priv->outside_segment,
rate, format, flags, cur_type, cur, stop_type, stop, NULL);
GST_DEBUG_OBJECT (seekd->comp, "Segment now has flags:%d",
priv->segment->flags);
if (priv->segment->start >= GNL_OBJECT_STOP (seekd->comp)) {
GST_INFO_OBJECT (seekd->comp,
"Start %" GST_TIME_FORMAT " > comp->stop: %" GST_TIME_FORMAT
" Not seeking", GST_TIME_ARGS (priv->segment->start),
GST_TIME_ARGS (GNL_OBJECT_STOP (seekd->comp)));
GST_FIXME_OBJECT (seekd->comp, "HANDLE error async!");
goto beach;
}
/* crop the segment start/stop values */
/* Only crop segment start value if we don't have a default object */
if (priv->expandables == NULL)
priv->segment->start =
MAX (priv->segment->start, GNL_OBJECT_START (seekd->comp));
priv->segment->stop =
MIN (priv->segment->stop, GNL_OBJECT_STOP (seekd->comp));
priv->next_base_time = 0;
seek_handling (seekd->comp, TRUE, FALSE);
priv->reset_time = TRUE;
priv->gnl_event_pad_func (GNL_OBJECT (seekd->comp)->srcpad,
GST_OBJECT (seekd->comp), get_new_seek_event (seekd->comp, FALSE, FALSE));
priv->reset_time = FALSE;
beach:
gst_event_unref (seekd->event);
g_slice_free (SeekData, seekd);
return G_SOURCE_REMOVE;
}
static void
_add_update_gsource (GnlComposition * comp)
{
@ -418,6 +486,21 @@ _add_commit_gsource (GnlComposition * comp)
MAIN_CONTEXT_UNLOCK (comp);
}
static void
_add_seek_gsource (GnlComposition * comp, GstEvent * event)
{
SeekData *seekd = g_slice_new0 (SeekData);
seekd->comp = comp;
seekd->event = event;
MAIN_CONTEXT_LOCK (comp);
g_main_context_invoke (comp->priv->mcontext,
(GSourceFunc) _seek_pipeline_func, seekd);
MAIN_CONTEXT_UNLOCK (comp);
}
static gboolean
_initialize_stack_func (GnlComposition * comp)
{
@ -1316,50 +1399,6 @@ seek_handling (GnlComposition * comp, gboolean initial, gboolean update)
return TRUE;
}
static gboolean
handle_seek_event (GnlComposition * comp, GstEvent * event)
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
gint64 cur, stop;
GnlCompositionPrivate *priv = comp->priv;
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
GST_DEBUG_OBJECT (comp,
"start:%" GST_TIME_FORMAT " -- stop:%" GST_TIME_FORMAT " flags:%d",
GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), flags);
gst_segment_do_seek (priv->segment,
rate, format, flags, cur_type, cur, stop_type, stop, NULL);
gst_segment_do_seek (priv->outside_segment,
rate, format, flags, cur_type, cur, stop_type, stop, NULL);
GST_DEBUG_OBJECT (comp, "Segment now has flags:%d", priv->segment->flags);
if (priv->segment->start >= GNL_OBJECT_STOP (comp)) {
GST_INFO_OBJECT (comp,
"Start %" GST_TIME_FORMAT " > comp->stop: %" GST_TIME_FORMAT
" Not seeking", GST_TIME_ARGS (priv->segment->start),
GST_TIME_ARGS (GNL_OBJECT_STOP (comp)));
return FALSE;
}
/* crop the segment start/stop values */
/* Only crop segment start value if we don't have a default object */
if (priv->expandables == NULL)
priv->segment->start = MAX (priv->segment->start, GNL_OBJECT_START (comp));
priv->segment->stop = MIN (priv->segment->stop, GNL_OBJECT_STOP (comp));
comp->priv->next_base_time = 0;
seek_handling (comp, TRUE, FALSE);
return TRUE;
}
static gboolean
gnl_composition_event_handler (GstPad * ghostpad, GstObject * parent,
GstEvent * event)
@ -1373,23 +1412,11 @@ gnl_composition_event_handler (GstPad * ghostpad, GstObject * parent,
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
GstEvent *nevent;
_add_seek_gsource (comp, event);
event = NULL;
GST_FIXME_OBJECT (comp, "HANDLE seeking errors!");
if ((res = handle_seek_event (comp, event)) == FALSE) {
gst_event_unref (event);
event = NULL;
break;
}
/* the incoming event might not be quite correct, we get a new proper
* event to pass on to the children. */
COMP_OBJECTS_LOCK (comp);
nevent = get_new_seek_event (comp, FALSE, FALSE);
COMP_OBJECTS_UNLOCK (comp);
gst_event_unref (event);
event = nevent;
priv->reset_time = TRUE;
break;
return TRUE;
}
case GST_EVENT_QOS:
{