Revert "New element 'proxy' to send data to in-process pipelines"

This reverts commit 8a056af05e23ad5b81cd1dc2699ae20abcf9b91a.

Accidentally pushed this element, oops! Progress on this element is
being tracked at: https://bugzilla.gnome.org/show_bug.cgi?id=788200

1 files changed, 0 insertions, 325 deletions

diff --git a/gst/proxy/gstproxysrc.c b/gst/proxy/gstproxysrc.c
deleted file mode 100644
index e760d0f2a..000000000
--- a/gst/proxy/gstproxysrc.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * Copyright (C) 2015 Centricular Ltd.
- *   Author: Sebastian Dröge <sebastian@centricular.com>
- *   Author: Nirbheek Chauhan <nirbheek@centricular.com>
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this
- * list of conditions and the following disclaimer in the documentation and/or other
- * materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- */
-
-/**
- * SECTION:element-proxysrc
- *
- * Proxysrc is a source element that proxies events, queries, and buffers from
- * another pipeline that contains a matching proxysink element. The purpose is
- * to allow two decoupled pipelines to function as though they are one without
- * having to manually shuttle buffers, events, queries, etc between the two.
- *
- * The element queues buffers from the matching proxysink to an internal queue,
- * so everything downstream is properly decoupled from the upstream pipeline.
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include "gstproxysrc.h"
-#include "gstproxysrc-priv.h"
-#include "gstproxysink.h"
-#include "gstproxysink-priv.h"
-
-#define GST_CAT_DEFAULT gst_proxy_src_debug
-GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
-
-static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS_ANY);
-
-enum
-{
-  PROP_0,
-  PROP_PROXYSINK,
-};
-
-struct _GstProxySrcPrivate
-{
-  /* Queue to hold buffers from proxysink */
-  GstElement *queue;
-  /* Source pad of the above queue and the proxysrc element itself */
-  GstPad *srcpad;
-  /* Our internal srcpad that proxysink pushes buffers/events/queries into */
-  GstPad *internal_srcpad;
-  /* An unlinked dummy sinkpad; see gst_proxy_src_init() */
-  GstPad *dummy_sinkpad;
-  /* The matching proxysink; queries and events are sent to its sinkpad */
-  GWeakRef proxysink;
-};
-
-/* We're not subclassing from basesrc because we don't want any of the special
- * handling it has for events/queries/etc. We just pass-through everything. */
-
-/* Our parent type is a GstBin instead of GstElement because we contain a queue
- * element */
-#define parent_class gst_proxy_src_parent_class
-G_DEFINE_TYPE (GstProxySrc, gst_proxy_src, GST_TYPE_BIN);
-
-static gboolean gst_proxy_src_internal_src_query (GstPad * pad,
-    GstObject * parent, GstQuery * query);
-static gboolean gst_proxy_src_internal_src_event (GstPad * pad,
-    GstObject * parent, GstEvent * event);
-
-static GstStateChangeReturn gst_proxy_src_change_state (GstElement * element,
-    GstStateChange transition);
-static void gst_proxy_src_dispose (GObject * object);
-
-static void
-gst_proxy_src_get_property (GObject * object,
-    guint prop_id, GValue * value, GParamSpec * spec)
-{
-  GstProxySrc *self = GST_PROXY_SRC (object);
-
-  switch (prop_id) {
-    case PROP_PROXYSINK:
-      g_value_take_object (value, g_weak_ref_get (&self->priv->proxysink));
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, spec);
-      break;
-  }
-}
-
-static void
-gst_proxy_src_set_property (GObject * object,
-    guint prop_id, const GValue * value, GParamSpec * spec)
-{
-  GstProxySrc *self = GST_PROXY_SRC (object);
-  GstProxySink *sink;
-
-  switch (prop_id) {
-    case PROP_PROXYSINK:
-      sink = g_value_dup_object (value);
-      if (sink == NULL) {
-        /* Unset proxysrc property on the existing proxysink to break the
-         * connection in that direction */
-        GstProxySink *old_sink = g_weak_ref_get (&self->priv->proxysink);
-        if (old_sink) {
-          gst_proxy_sink_set_proxysrc (old_sink, NULL);
-          g_object_unref (old_sink);
-        }
-        g_weak_ref_set (&self->priv->proxysink, NULL);
-      } else {
-        /* Set proxysrc property on the new proxysink to point to us */
-        gst_proxy_sink_set_proxysrc (sink, self);
-        g_weak_ref_set (&self->priv->proxysink, sink);
-        g_object_unref (sink);
-      }
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, spec);
-  }
-}
-
-static void
-gst_proxy_src_class_init (GstProxySrcClass * klass)
-{
-  GObjectClass *gobject_class = (GObjectClass *) klass;
-  GstElementClass *gstelement_class = (GstElementClass *) klass;
-
-  GST_DEBUG_CATEGORY_INIT (gst_proxy_src_debug, "proxysrc", 0, "proxy sink");
-
-  g_type_class_add_private (klass, sizeof (GstProxySrcPrivate));
-
-  gobject_class->dispose = gst_proxy_src_dispose;
-
-  gobject_class->get_property = gst_proxy_src_get_property;
-  gobject_class->set_property = gst_proxy_src_set_property;
-
-  g_object_class_install_property (gobject_class, PROP_PROXYSINK,
-      g_param_spec_object ("proxysink", "Proxysink", "Matching proxysink",
-          GST_TYPE_PROXY_SINK, G_PARAM_READWRITE));
-
-  gstelement_class->change_state = gst_proxy_src_change_state;
-  gst_element_class_add_pad_template (gstelement_class,
-      gst_static_pad_template_get (&src_template));
-
-  gst_element_class_set_static_metadata (gstelement_class, "Proxy source",
-      "Source", "Proxy source for internal process communication",
-      "Sebastian Dröge <sebastian@centricular.com>");
-}
-
-static void
-gst_proxy_src_init (GstProxySrc * self)
-{
-  GstPad *srcpad, *sinkpad;
-  GstPadTemplate *templ;
-
-  GST_OBJECT_FLAG_SET (self, GST_ELEMENT_FLAG_SOURCE);
-
-  self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GST_TYPE_PROXY_SRC,
-      GstProxySrcPrivate);
-
-  /* We feed incoming buffers into a queue to decouple the downstream pipeline
-   * from the upstream pipeline */
-  self->priv->queue = gst_element_factory_make ("queue", NULL);
-  gst_bin_add (GST_BIN (self), self->priv->queue);
-
-  srcpad = gst_element_get_static_pad (self->priv->queue, "src");
-  templ = gst_static_pad_template_get (&src_template);
-  self->priv->srcpad = gst_ghost_pad_new_from_template ("src", srcpad, templ);
-  gst_object_unref (templ);
-  gst_object_unref (srcpad);
-
-  gst_element_add_pad (GST_ELEMENT (self), self->priv->srcpad);
-
-  /* A dummy sinkpad that's not actually used anywhere
-   * Explanation for why this is needed is below */
-  self->priv->dummy_sinkpad = gst_pad_new ("dummy_sinkpad", GST_PAD_SINK);
-  gst_object_set_parent (GST_OBJECT (self->priv->dummy_sinkpad),
-      GST_OBJECT (self));
-
-  self->priv->internal_srcpad = gst_pad_new ("internal_src", GST_PAD_SRC);
-  gst_object_set_parent (GST_OBJECT (self->priv->internal_srcpad),
-      GST_OBJECT (self->priv->dummy_sinkpad));
-  gst_pad_set_event_function (self->priv->internal_srcpad,
-      gst_proxy_src_internal_src_event);
-  gst_pad_set_query_function (self->priv->internal_srcpad,
-      gst_proxy_src_internal_src_query);
-
-  /* We need to link internal_srcpad from proxysink to the sinkpad of our
-   * queue. However, two pads can only be linked if they share a common parent.
-   * Above, we set the parent of the dummy_sinkpad as proxysrc, and then we set
-   * the parent of internal_srcpad as dummy_sinkpad. This causes both these pads
-   * to share a parent allowing us to link them.
-   * Yes, this is a hack/workaround. */
-  sinkpad = gst_element_get_static_pad (self->priv->queue, "sink");
-  gst_pad_link (self->priv->internal_srcpad, sinkpad);
-  gst_object_unref (sinkpad);
-}
-
-static void
-gst_proxy_src_dispose (GObject * object)
-{
-  GstProxySrc *self = GST_PROXY_SRC (object);
-
-  gst_object_unparent (GST_OBJECT (self->priv->dummy_sinkpad));
-  self->priv->dummy_sinkpad = NULL;
-
-  gst_object_unparent (GST_OBJECT (self->priv->internal_srcpad));
-  self->priv->internal_srcpad = NULL;
-
-  g_weak_ref_set (&self->priv->proxysink, NULL);
-
-  G_OBJECT_CLASS (gst_proxy_src_parent_class)->dispose (object);
-}
-
-static GstStateChangeReturn
-gst_proxy_src_change_state (GstElement * element, GstStateChange transition)
-{
-  GstElementClass *gstelement_class =
-      GST_ELEMENT_CLASS (gst_proxy_src_parent_class);
-  GstProxySrc *self = GST_PROXY_SRC (element);
-  GstStateChangeReturn ret;
-
-  ret = gstelement_class->change_state (element, transition);
-  if (ret == GST_STATE_CHANGE_FAILURE)
-    return ret;
-
-  switch (transition) {
-    case GST_STATE_CHANGE_READY_TO_PAUSED:
-      ret = GST_STATE_CHANGE_NO_PREROLL;
-      gst_pad_set_active (self->priv->internal_srcpad, TRUE);
-      break;
-    case GST_STATE_CHANGE_PAUSED_TO_READY:
-      gst_pad_set_active (self->priv->internal_srcpad, FALSE);
-      break;
-    default:
-      break;
-  }
-
-  return ret;
-}
-
-static gboolean
-gst_proxy_src_internal_src_query (GstPad * pad, GstObject * parent,
-    GstQuery * query)
-{
-  GstProxySrc *self = GST_PROXY_SRC (gst_object_get_parent (parent));
-  GstProxySink *sink;
-  gboolean ret = FALSE;
-
-  if (!self)
-    return ret;
-
-  GST_LOG_OBJECT (pad, "Handling query of type '%s'",
-      gst_query_type_get_name (GST_QUERY_TYPE (query)));
-
-  sink = g_weak_ref_get (&self->priv->proxysink);
-  if (sink) {
-    GstPad *sinkpad;
-    sinkpad = gst_proxy_sink_get_internal_sinkpad (sink);
-
-    ret = gst_pad_peer_query (sinkpad, query);
-    gst_object_unref (sinkpad);
-    gst_object_unref (sink);
-  }
-
-  gst_object_unref (self);
-
-  return ret;
-}
-
-static gboolean
-gst_proxy_src_internal_src_event (GstPad * pad, GstObject * parent,
-    GstEvent * event)
-{
-  GstProxySrc *self = GST_PROXY_SRC (gst_object_get_parent (parent));
-  GstProxySink *sink;
-  gboolean ret = FALSE;
-
-  if (!self)
-    return ret;
-
-  GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
-
-  sink = g_weak_ref_get (&self->priv->proxysink);
-  if (sink) {
-    GstPad *sinkpad;
-    sinkpad = gst_proxy_sink_get_internal_sinkpad (sink);
-
-    ret = gst_pad_push_event (sinkpad, event);
-    gst_object_unref (sinkpad);
-    gst_object_unref (sink);
-  } else
-    gst_event_unref (event);
-
-
-  gst_object_unref (self);
-
-  return ret;
-}
-
-/* Wrapper function for accessing private member */
-GstPad *
-gst_proxy_src_get_internal_srcpad (GstProxySrc * self)
-{
-  return gst_object_ref (self->priv->internal_srcpad);
-}