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assrender: Implement srcpad event functions for seeking and correct event forwarding

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This commit is contained in:
Sebastian Dröge 2009-12-09 09:51:20 +01:00
parent 830187fc0d
commit 44aba00375
1 changed files with 52 additions and 0 deletions
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52
ext/assrender/gstassrender.c
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@ -105,6 +105,7 @@ static GstFlowReturn gst_ass_render_chain_text (GstPad * pad, GstBuffer * buf);
static gboolean gst_ass_render_event_video (GstPad * pad, GstEvent * event);
static gboolean gst_ass_render_event_text (GstPad * pad, GstEvent * event);
static gboolean gst_ass_render_event_src (GstPad * pad, GstEvent * event);
static void
gst_ass_render_base_init (gpointer gclass)
@ -199,6 +200,8 @@ gst_ass_render_init (GstAssRender * render, GstAssRenderClass * gclass)
GST_DEBUG_FUNCPTR (gst_ass_render_event_video));
gst_pad_set_event_function (render->text_sinkpad,
GST_DEBUG_FUNCPTR (gst_ass_render_event_text));
gst_pad_set_event_function (render->srcpad,
GST_DEBUG_FUNCPTR (gst_ass_render_event_src));
gst_element_add_pad (GST_ELEMENT (render), render->srcpad);
gst_element_add_pad (GST_ELEMENT (render), render->video_sinkpad);
@ -349,6 +352,55 @@ gst_ass_render_change_state (GstElement * element, GstStateChange transition)
return ret;
}
static gboolean
gst_ass_render_event_src (GstPad * pad, GstEvent * event)
{
GstAssRender *render = GST_ASS_RENDER (gst_pad_get_parent (pad));
gboolean ret = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:{
GstSeekFlags flags;
GST_DEBUG_OBJECT (render, "seek received, driving from here");
gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL, NULL);
/* Flush downstream, only for flushing seek */
if (flags & GST_SEEK_FLAG_FLUSH)
gst_pad_push_event (render->srcpad, gst_event_new_flush_start ());
/* Mark subtitle as flushing, unblocks chains */
g_mutex_lock (render->subtitle_mutex);
if (render->subtitle_pending)
gst_buffer_unref (render->subtitle_pending);
render->subtitle_pending = NULL;
render->subtitle_flushing = TRUE;
g_cond_signal (render->subtitle_cond);
g_mutex_unlock (render->subtitle_mutex);
/* Seek on each sink pad */
gst_event_ref (event);
ret = gst_pad_push_event (render->video_sinkpad, event);
if (ret) {
ret = gst_pad_push_event (render->text_sinkpad, event);
} else {
gst_event_unref (event);
}
break;
}
default:
gst_event_ref (event);
ret = gst_pad_push_event (render->video_sinkpad, event);
gst_pad_push_event (render->text_sinkpad, event);
break;
}
gst_object_unref (render);
return ret;
}
static GstCaps *
gst_ass_render_getcaps (GstPad * pad)
{