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[MOVED FROM GST-P-FARSIGHT] Use do the alloc_buffer function in the valve

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20071219005739-3e2dc-2a0fdfa2f38f03ab4791fe5c4ab85e8790113683.gz
This commit is contained in:
Olivier Crete 2007-12-19 00:57:39 +00:00 committed by Edward Hervey
parent 8d8c9adf30
commit ee9906672b
2 changed files with 41 additions and 4 deletions
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43
gst/valve/gstvalve.c
View file

@ -74,10 +74,11 @@ static void gst_valve_get_property (GObject *object,
guint prop_id, GValue *value, GParamSpec *pspec);
static void gst_valve_dispose (GObject *object);
static GstFlowReturn
gst_valve_transform_ip (GstBaseTransform *trans, GstBuffer *buf);
static gboolean
gst_valve_event (GstBaseTransform *trans, GstEvent *event);
static GstFlowReturn gst_valve_transform_ip (GstBaseTransform *trans,
GstBuffer *buf);
static gboolean gst_valve_event (GstBaseTransform *trans, GstEvent *event);
static GstFlowReturn gst_valve_buffer_alloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf);
static void
@ -139,6 +140,14 @@ gst_valve_init (GstValve *valve, GstValveClass *klass)
valve->drop = 0;
valve->original_allocfunc =
GST_BASE_TRANSFORM (valve)->sinkpad->bufferallocfunc;
gst_pad_set_bufferalloc_function (
GST_BASE_TRANSFORM (valve)->sinkpad,
GST_DEBUG_FUNCPTR(gst_valve_buffer_alloc));
#if GST_VERSION_MINOR >= 10 && GST_VERSION_MICRO >= 13
gst_base_transform_set_passthrough ((GstBaseTransform *)valve, TRUE);
#endif
@ -223,6 +232,32 @@ gst_valve_event (GstBaseTransform *trans, GstEvent *event)
return ret;
}
static GstFlowReturn
gst_valve_buffer_alloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstValve *valve = GST_VALVE (gst_pad_get_parent_element (pad));
GstFlowReturn ret = GST_FLOW_OK;
GST_OBJECT_LOCK (GST_OBJECT (valve));
if (valve->drop)
{
*buf = gst_buffer_new_and_alloc (size);
GST_BUFFER_OFFSET (*buf) = offset;
gst_buffer_set_caps (*buf, caps);
}
else
{
ret = valve->original_allocfunc (pad, offset, size, caps, buf);
}
GST_OBJECT_UNLOCK (GST_OBJECT (valve));
gst_object_unref (valve);
return ret;
}
gboolean
gst_valve_plugin_init (GstPlugin *plugin)
{

2
gst/valve/gstvalve.h
View file

@ -54,6 +54,8 @@ struct _GstValve
gboolean drop;
GstPadBufferAllocFunction original_allocfunc;
/*< private > */
gpointer _gst_reserved[GST_PADDING];
};