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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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[MOVED FROM GST-P-FARSIGHT] Rebase valve onto gstelement instead of basetransform
This commit is contained in:
Olivier Crête
Edward Hervey
parent
e97d7d9b04
commit
907a660cdc
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@ -73,14 +73,10 @@ static void gst_valve_set_property (GObject *object,
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static void gst_valve_get_property (GObject *object,
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guint prop_id, GValue *value, GParamSpec *pspec);
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static GstFlowReturn gst_valve_transform_ip (GstBaseTransform *trans,
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GstBuffer *buf);
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static gboolean gst_valve_event (GstBaseTransform *trans, GstEvent *event);
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static gboolean gst_valve_event (GstPad *pad, GstEvent *event);
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static GstFlowReturn gst_valve_buffer_alloc (GstPad * pad, guint64 offset,
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guint size, GstCaps * caps, GstBuffer ** buf);
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static GstFlowReturn gst_valve_prepare_output_buffer (GstBaseTransform *trans,
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GstBuffer * in_buf, gint out_size, GstCaps * out_caps,
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GstBuffer ** out_buf);
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static GstFlowReturn gst_valve_chain (GstPad *pad, GstBuffer *buffer);
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static void
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_do_init (GType type)
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@ -89,8 +85,8 @@ _do_init (GType type)
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(valve_debug, "valve", 0, "Valve");
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}
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GST_BOILERPLATE_FULL (GstValve, gst_valve, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM, _do_init);
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GST_BOILERPLATE_FULL (GstValve, gst_valve, GstElement,
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GST_TYPE_ELEMENT, _do_init);
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static void
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gst_valve_base_init (gpointer klass)
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@ -109,23 +105,12 @@ static void
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gst_valve_class_init (GstValveClass *klass)
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{
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GObjectClass *gobject_class;
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GstBaseTransformClass *gstbasetransform_class;
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gobject_class = (GObjectClass *) klass;
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gstbasetransform_class = (GstBaseTransformClass *) klass;
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gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_valve_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_valve_get_property);
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gstbasetransform_class->transform_ip =
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GST_DEBUG_FUNCPTR (gst_valve_transform_ip);
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gstbasetransform_class->prepare_output_buffer =
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GST_DEBUG_FUNCPTR (gst_valve_prepare_output_buffer);
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gstbasetransform_class->event =
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GST_DEBUG_FUNCPTR (gst_valve_event);
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gstbasetransform_class->src_event =
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GST_DEBUG_FUNCPTR (gst_valve_event);
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g_object_class_install_property (gobject_class, ARG_DROP,
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g_param_spec_boolean ("drop",
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"Drops all buffers if TRUE",
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@ -138,22 +123,20 @@ gst_valve_class_init (GstValveClass *klass)
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static void
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gst_valve_init (GstValve *valve, GstValveClass *klass)
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{
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valve->drop = FALSE;
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valve->discont = FALSE;
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valve->original_allocfunc =
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GST_BASE_TRANSFORM (valve)->sinkpad->bufferallocfunc;
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gst_pad_set_bufferalloc_function (
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GST_BASE_TRANSFORM (valve)->sinkpad,
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GST_DEBUG_FUNCPTR(gst_valve_buffer_alloc));
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#if GST_VERSION_MINOR >= 10 && GST_VERSION_MICRO >= 13
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gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (valve), FALSE);
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#endif
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valve->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
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gst_element_add_pad (GST_ELEMENT (valve), valve->srcpad);
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valve->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
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gst_pad_set_chain_function (valve->sinkpad,
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GST_DEBUG_FUNCPTR (gst_valve_chain));
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gst_pad_set_event_function (valve->sinkpad,
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GST_DEBUG_FUNCPTR (gst_valve_event));
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gst_pad_set_bufferalloc_function (valve->sinkpad,
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GST_DEBUG_FUNCPTR (gst_valve_buffer_alloc));
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gst_element_add_pad (GST_ELEMENT (valve), valve->sinkpad);
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}
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@ -194,60 +177,51 @@ gst_valve_get_property (GObject *object,
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}
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static GstFlowReturn
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gst_valve_prepare_output_buffer (GstBaseTransform *trans, GstBuffer * in_buf,
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gint out_size, GstCaps * out_caps,
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GstBuffer ** out_buf)
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gst_valve_chain (GstPad *pad, GstBuffer *buffer)
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{
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GstValve *valve = GST_VALVE (trans);
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GstValve *valve = GST_VALVE (gst_pad_get_parent_element (pad));
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GstFlowReturn ret = GST_FLOW_OK;
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gboolean drop;
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GST_OBJECT_LOCK (GST_OBJECT (trans));
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if (valve->drop)
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GST_OBJECT_LOCK (GST_OBJECT (valve));
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drop = valve->drop;
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if (!drop && valve->discont)
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{
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#if GST_VERSION_MINOR >= 10 && GST_VERSION_MICRO >= 13
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ret = GST_BASE_TRANSFORM_FLOW_DROPPED;
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#endif
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*out_buf = NULL;
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valve->discont = TRUE;
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buffer = gst_buffer_make_metadata_writable (buffer);
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GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
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valve->discont = FALSE;
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}
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GST_OBJECT_UNLOCK (GST_OBJECT (valve));
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if (drop)
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gst_buffer_unref (buffer);
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else
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{
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if (valve->discont)
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{
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*out_buf = gst_buffer_make_metadata_writable (in_buf);
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GST_BUFFER_FLAG_SET (*out_buf, GST_BUFFER_FLAG_DISCONT);
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valve->discont = FALSE;
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ret = gst_pad_push (valve->srcpad, buffer);
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}
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else
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{
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*out_buf = in_buf;
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}
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gst_buffer_ref (*out_buf);
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}
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GST_OBJECT_UNLOCK (GST_OBJECT (trans));
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gst_object_unref (valve);
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return ret;
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}
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static GstFlowReturn
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gst_valve_transform_ip (GstBaseTransform *trans, GstBuffer *buf)
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{
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return GST_FLOW_OK;
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}
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static gboolean
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gst_valve_event (GstBaseTransform *trans, GstEvent *event)
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gst_valve_event (GstPad *pad, GstEvent *event)
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{
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GstValve *valve = GST_VALVE (trans);
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GstValve *valve = GST_VALVE (gst_pad_get_parent_element (pad));
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gboolean ret = TRUE;
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gboolean drop;
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GST_OBJECT_LOCK (GST_OBJECT (trans));
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if (valve->drop)
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ret = FALSE;
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GST_OBJECT_UNLOCK (GST_OBJECT (trans));
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GST_OBJECT_LOCK (GST_OBJECT (valve));
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drop = valve->drop;
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GST_OBJECT_UNLOCK (GST_OBJECT (valve));
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if (drop)
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gst_event_unref (event);
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else
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ret = gst_pad_push_event (valve->srcpad, event);
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gst_object_unref (valve);
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return ret;
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}
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@ -257,21 +231,16 @@ gst_valve_buffer_alloc (GstPad * pad, guint64 offset, guint size,
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{
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GstValve *valve = GST_VALVE (gst_pad_get_parent_element (pad));
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GstFlowReturn ret = GST_FLOW_OK;
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gboolean drop;
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GST_OBJECT_LOCK (GST_OBJECT (valve));
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if (valve->drop)
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{
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GST_OBJECT_UNLOCK (GST_OBJECT (valve));
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*buf = gst_buffer_new_and_alloc (size);
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GST_BUFFER_OFFSET (*buf) = offset;
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gst_buffer_set_caps (*buf, caps);
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}
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drop = valve->drop;
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GST_OBJECT_UNLOCK (GST_OBJECT (valve));
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if (drop)
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*buf = NULL;
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else
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{
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GstPadBufferAllocFunction allocfunc = valve->original_allocfunc;
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GST_OBJECT_UNLOCK (GST_OBJECT (valve));
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ret = allocfunc (pad, offset, size, caps, buf);
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}
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ret = gst_pad_alloc_buffer (valve->srcpad, offset, size, caps, buf);
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gst_object_unref (valve);
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@ -26,7 +26,6 @@
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#define __GST_VALVE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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G_BEGIN_DECLS
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@ -50,7 +49,7 @@ typedef struct _GstValvePrivate GstValvePrivate;
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struct _GstValve
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{
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GstBaseTransform parent;
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GstElement parent;
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/* Protected by the object lock */
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gboolean drop;
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@ -58,7 +57,8 @@ struct _GstValve
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/* Protected by the stream lock*/
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gboolean discont;
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GstPadBufferAllocFunction original_allocfunc;
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GstPad *srcpad;
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GstPad *sinkpad;
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/*< private > */
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gpointer _gst_reserved[GST_PADDING];
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@ -66,7 +66,7 @@ struct _GstValve
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struct _GstValveClass
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{
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GstBaseTransformClass parent_class;
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GstElementClass parent_class;
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/*< private > */
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gpointer _gst_reserved[GST_PADDING];
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