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rndbuffersize: add support for seeks

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Useful for e.g. filesrc ! rndbuffersize ! queue2 ! ...
This commit is contained in:
Tim-Philipp Müller 2012-05-08 19:07:04 +01:00
parent 920e91e072
commit 84c842cfe9
1 changed files with 52 additions and 0 deletions
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52
gst/debugutils/rndbuffersize.c
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@ -93,6 +93,7 @@ static gboolean gst_rnd_buffer_size_activate_mode (GstPad * pad,
static void gst_rnd_buffer_size_loop (GstRndBufferSize * self); static void gst_rnd_buffer_size_loop (GstRndBufferSize * self);
static GstStateChangeReturn gst_rnd_buffer_size_change_state (GstElement * static GstStateChangeReturn gst_rnd_buffer_size_change_state (GstElement *
element, GstStateChange transition); element, GstStateChange transition);
static gboolean gst_rnd_buffer_size_src_event (GstPad * pad, GstEvent * event);
GType gst_rnd_buffer_size_get_type (void); GType gst_rnd_buffer_size_get_type (void);
#define gst_rnd_buffer_size_parent_class parent_class #define gst_rnd_buffer_size_parent_class parent_class
@ -152,6 +153,8 @@ gst_rnd_buffer_size_init (GstRndBufferSize * self)
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad); gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
self->srcpad = gst_pad_new_from_static_template (&src_template, "src"); self->srcpad = gst_pad_new_from_static_template (&src_template, "src");
gst_pad_set_event_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_rnd_buffer_size_src_event));
gst_element_add_pad (GST_ELEMENT (self), self->srcpad); gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
} }
@ -274,6 +277,55 @@ gst_rnd_buffer_size_activate_mode (GstPad * pad, GstObject * parent,
return res; return res;
} }
static gboolean
gst_rnd_buffer_size_src_event (GstPad * pad, GstEvent * event)
{
GstRndBufferSize *self;
GstSeekType start_type;
GstSeekFlags flags;
GstFormat format;
gint64 start;
if (GST_EVENT_TYPE (event) != GST_EVENT_SEEK) {
GST_WARNING_OBJECT (pad, "dropping %s event", GST_EVENT_TYPE_NAME (event));
return FALSE;
}
self = GST_RND_BUFFER_SIZE (GST_OBJECT_PARENT (pad));
gst_event_parse_seek (event, NULL, &format, &flags, &start_type, &start,
NULL, NULL);
if (format != GST_FORMAT_BYTES) {
GST_WARNING_OBJECT (pad, "only BYTE format supported");
return FALSE;
}
if (start_type != GST_SEEK_TYPE_SET) {
GST_WARNING_OBJECT (pad, "only SEEK_TYPE_SET supported");
return FALSE;
}
if ((flags & GST_SEEK_FLAG_FLUSH)) {
gst_pad_push_event (self->srcpad, gst_event_new_flush_start ());
gst_pad_push_event (self->sinkpad, gst_event_new_flush_start ());
gst_pad_push_event (self->srcpad, gst_event_new_flush_stop ());
gst_pad_push_event (self->sinkpad, gst_event_new_flush_stop ());
} else {
gst_pad_pause_task (self->sinkpad);
}
GST_PAD_STREAM_LOCK (self->sinkpad);
GST_INFO_OBJECT (pad, "seeking to offset %" G_GINT64_FORMAT, start);
self->offset = start;
self->need_newsegment = TRUE;
gst_pad_start_task (self->sinkpad, (GstTaskFunction) gst_rnd_buffer_size_loop,
self);
GST_PAD_STREAM_UNLOCK (self->sinkpad);
return TRUE;
}
static void static void
gst_rnd_buffer_size_loop (GstRndBufferSize * self) gst_rnd_buffer_size_loop (GstRndBufferSize * self)