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libs/gst/base/gstbasetransform.*: Add support for dropping buffers with custom GstFlowReturn.
Original commit message from CVS: * libs/gst/base/gstbasetransform.c: (gst_base_transform_sink_eventfunc), (gst_base_transform_handle_buffer), (gst_base_transform_chain), (gst_base_transform_activate): * libs/gst/base/gstbasetransform.h: Add support for dropping buffers with custom GstFlowReturn. Set DISCONT flags on outgoing buffers based on QoS, incomming DISCONT buffers or dropped buffers. * docs/libs/gstreamer-libs-sections.txt: docs for new custom return code. * plugins/elements/gstidentity.c: (gst_identity_transform_ip): Use drop support in base class to implement drop-probability.
This commit is contained in:
Wim Taymans
parent
a6510349d4
commit
ecc37d9389
6 changed files with 65 additions and 11 deletions
17
ChangeLog
17
ChangeLog
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@ -1,3 +1,20 @@
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2007-03-08 Wim Taymans <wim@fluendo.com>
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* libs/gst/base/gstbasetransform.c:
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(gst_base_transform_sink_eventfunc),
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(gst_base_transform_handle_buffer), (gst_base_transform_chain),
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(gst_base_transform_activate):
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* libs/gst/base/gstbasetransform.h:
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Add support for dropping buffers with custom GstFlowReturn.
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Set DISCONT flags on outgoing buffers based on QoS, incomming DISCONT
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buffers or dropped buffers.
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* docs/libs/gstreamer-libs-sections.txt:
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docs for new custom return code.
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* plugins/elements/gstidentity.c: (gst_identity_transform_ip):
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Use drop support in base class to implement drop-probability.
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2007-03-07 Tim-Philipp Müller <tim at centricular dot net>
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* gst/gst.c: (load_plugin_func):
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2
common
2
common
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@ -1 +1 @@
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Subproject commit c4f56a657d79aee0e3fc25ef2bcf876f9f3c1593
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Subproject commit 7c5a0ab68de1fed4e5a1fd473160debc2c4c7b89
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@ -222,6 +222,8 @@ GST_BASE_TRANSFORM_SRC_NAME
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GST_BASE_TRANSFORM_SINK_PAD
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GST_BASE_TRANSFORM_SRC_PAD
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GST_BASE_TRANSFORM_FLOW_DROPPED
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<SUBSECTION Standard>
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GST_BASE_TRANSFORM
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GST_IS_BASE_TRANSFORM
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@ -230,6 +230,8 @@ struct _GstBaseTransformPrivate
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gboolean qos_enabled;
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gdouble proportion;
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GstClockTime earliest_time;
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/* previous buffer had a discont */
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gboolean discont;
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GstActivateMode pad_mode;
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};
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@ -1250,6 +1252,7 @@ gst_base_transform_sink_eventfunc (GstBaseTransform * trans, GstEvent * event)
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/* reset QoS parameters */
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trans->priv->proportion = 1.0;
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trans->priv->earliest_time = -1;
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trans->priv->discont = FALSE;
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GST_OBJECT_UNLOCK (trans);
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/* we need new segment info after the flush. */
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trans->have_newsegment = FALSE;
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@ -1372,6 +1375,12 @@ gst_base_transform_handle_buffer (GstBaseTransform * trans, GstBuffer * inbuf,
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if (!trans->negotiated && !trans->passthrough && (bclass->set_caps != NULL))
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goto not_negotiated;
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/* Set discont flag so we can mark the outgoing buffer */
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if (GST_BUFFER_IS_DISCONT (inbuf)) {
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GST_LOG_OBJECT (trans, "got DISCONT buffer %p", inbuf);
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trans->priv->discont = TRUE;
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}
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/* can only do QoS if the segment is in TIME */
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if (trans->segment.format != GST_FORMAT_TIME)
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goto no_qos;
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@ -1395,6 +1404,8 @@ gst_base_transform_handle_buffer (GstBaseTransform * trans, GstBuffer * inbuf,
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GST_CAT_DEBUG_OBJECT (GST_CAT_QOS, trans, "skipping transform: qostime %"
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GST_TIME_FORMAT " <= %" GST_TIME_FORMAT,
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GST_TIME_ARGS (qostime), GST_TIME_ARGS (earliest_time));
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/* mark discont for next buffer */
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trans->priv->discont = TRUE;
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goto skip;
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}
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}
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@ -1411,7 +1422,7 @@ no_qos:
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*outbuf = inbuf;
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return ret;
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goto done;
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}
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want_in_place = (bclass->transform_ip != NULL) && trans->always_in_place;
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@ -1477,6 +1488,7 @@ skip:
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if (*outbuf != inbuf)
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gst_buffer_unref (inbuf);
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done:
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return ret;
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/* ERRORS */
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@ -1565,14 +1577,29 @@ gst_base_transform_chain (GstPad * pad, GstBuffer * buffer)
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ret = gst_base_transform_handle_buffer (trans, buffer, &outbuf);
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g_mutex_unlock (trans->transform_lock);
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/* outbuf can be NULL, this means a dropped buffer */
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/* outbuf can be NULL, this means a dropped buffer, if we have a buffer but
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* GST_BASE_TRANSFORM_FLOW_DROPPED we will not push either. */
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if (outbuf != NULL) {
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if ((ret == GST_FLOW_OK))
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if ((ret == GST_FLOW_OK)) {
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/* apply DISCONT flag if the buffer is not yet marked as such */
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if (trans->priv->discont) {
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if (!GST_BUFFER_IS_DISCONT (outbuf)) {
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outbuf = gst_buffer_make_metadata_writable (outbuf);
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GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
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}
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trans->priv->discont = FALSE;
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}
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ret = gst_pad_push (trans->srcpad, outbuf);
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else
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} else
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gst_buffer_unref (outbuf);
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}
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/* convert internal flow to OK and mark discont for the next buffer. */
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if (ret == GST_BASE_TRANSFORM_FLOW_DROPPED) {
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trans->priv->discont = TRUE;
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ret = GST_FLOW_OK;
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}
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gst_object_unref (trans);
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return ret;
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@ -1641,6 +1668,7 @@ gst_base_transform_activate (GstBaseTransform * trans, gboolean active)
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gst_segment_init (&trans->segment, GST_FORMAT_UNDEFINED);
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trans->priv->proportion = 1.0;
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trans->priv->earliest_time = -1;
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trans->priv->discont = FALSE;
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GST_OBJECT_UNLOCK (trans);
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} else {
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@ -67,11 +67,20 @@ G_BEGIN_DECLS
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*/
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#define GST_BASE_TRANSFORM_SINK_PAD(obj) (GST_BASE_TRANSFORM_CAST (obj)->sinkpad)
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/**
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* GST_BASE_TRANSFORM_FLOW_DROPPED:
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*
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* A #GstFlowReturn that can be returned from transform and transform_ip to
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* indicate that no output buffer was generated.
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*
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* Since: 0.10.13
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*/
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#define GST_BASE_TRANSFORM_FLOW_DROPPED GST_FLOW_CUSTOM_SUCCESS
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typedef struct _GstBaseTransform GstBaseTransform;
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typedef struct _GstBaseTransformClass GstBaseTransformClass;
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typedef struct _GstBaseTransformPrivate GstBaseTransformPrivate;
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/**
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* GstBaseTransform:
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* @element: the parent element.
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@ -183,7 +183,7 @@ gst_identity_class_init (GstIdentityClass * klass)
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g_object_class_install_property (gobject_class,
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PROP_DROP_PROBABILITY, g_param_spec_float ("drop_probability",
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"Drop Probability",
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"The Probability a buffer is dropped (not implemented)", 0.0, 1.0,
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"The Probability a buffer is dropped", 0.0, 1.0,
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DEFAULT_DROP_PROBABILITY, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_DATARATE,
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g_param_spec_int ("datarate", "Datarate",
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@ -434,10 +434,8 @@ gst_identity_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
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GST_OBJECT_UNLOCK (identity);
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g_object_notify (G_OBJECT (identity), "last-message");
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}
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/* FIXME, this does not drop the buffer in basetransform. Actually
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* dropping the buffer in transform_ip is not possible without a new
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* custom GstFlowReturn value. */
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return GST_FLOW_OK;
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/* return DROPPED to basetransform. */
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return GST_BASE_TRANSFORM_FLOW_DROPPED;
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}
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}
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