From 97a2eb7afbe004edf95a49468e48f2cab23db84d Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tim-Philipp=20M=C3=BCller?= <tim@centricular.com>
Date: Tue, 24 Jun 2014 01:16:37 +0100
Subject: [PATCH] multiudpsink: re-use send_buffers() code path for render()
 function

It's like rendering a buffer list, just with one buffer.
Has the added advantage that if there are multiple clients
we can send the buffer to all the clients in one go.
---
 gst/udp/gstmultiudpsink.c | 121 +++-------------------------------------------
 1 file changed, 7 insertions(+), 114 deletions(-)

diff --git a/gst/udp/gstmultiudpsink.c b/gst/udp/gstmultiudpsink.c
index c803eab..310566e 100644
--- a/gst/udp/gstmultiudpsink.c
+++ b/gst/udp/gstmultiudpsink.c
@@ -912,126 +912,19 @@ static GstFlowReturn
 gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
 {
   GstMultiUDPSink *sink;
-  GList *clients;
-  GOutputVector *vec;
-  GstMapInfo *map;
-  guint n_mem, i;
-  gsize size;
-  GstMemory *mem;
-  gint num, no_clients;
-  GError *err = NULL;
+  GstFlowReturn flow;
+  guint8 n_mem;
 
   sink = GST_MULTIUDPSINK_CAST (bsink);
 
   n_mem = gst_buffer_n_memory (buffer);
-  if (n_mem == 0)
-    goto no_data;
-
-  /* pre-allocated, the max number of memory blocks is limited so this
-   * should not cause overflows */
-  vec = sink->vec;
-  map = sink->map;
-
-  size = 0;
-  for (i = 0; i < n_mem; i++) {
-    mem = gst_buffer_peek_memory (buffer, i);
-    gst_memory_map (mem, &map[i], GST_MAP_READ);
-
-    vec[i].buffer = map[i].data;
-    vec[i].size = map[i].size;
-
-    size += map[i].size;
-  }
-
-  sink->bytes_to_serve += size;
-
-  /* grab lock while iterating and sending to clients, this should be
-   * fast as UDP never blocks */
-  g_mutex_lock (&sink->client_lock);
-  GST_LOG_OBJECT (bsink, "about to send %" G_GSIZE_FORMAT " bytes in %u blocks",
-      size, n_mem);
-
-  no_clients = 0;
-  num = 0;
-  for (clients = sink->clients; clients; clients = g_list_next (clients)) {
-    GstUDPClient *client;
-    GSocket *socket;
-    GSocketFamily family;
-    gint count;
-
-    client = (GstUDPClient *) clients->data;
-    no_clients++;
-    GST_LOG_OBJECT (sink, "sending %" G_GSIZE_FORMAT " bytes to client %p",
-        size, client);
-
-    family = g_socket_address_get_family (G_SOCKET_ADDRESS (client->addr));
-    /* Select socket to send from for this address */
-    if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
-      socket = sink->used_socket_v6;
-    else
-      socket = sink->used_socket;
-
-    count = sink->send_duplicates ? client->add_count : 1;
-
-    while (count--) {
-      gssize ret;
-
-      ret =
-          g_socket_send_message (socket, client->addr, vec, n_mem,
-          NULL, 0, 0, sink->cancellable, &err);
-
-      if (G_UNLIKELY (ret < 0)) {
-        if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
-          goto flushing;
-
-        /* we continue after posting a warning, next packets might be ok
-         * again */
-        if (size > UDP_MAX_SIZE) {
-          GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
-              ("Attempting to send a UDP packet larger than maximum size "
-                  "(%" G_GSIZE_FORMAT " > %d)", size, UDP_MAX_SIZE),
-              ("Reason: %s", err ? err->message : "unknown reason"));
-        } else {
-          GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
-              ("Error sending UDP packet"), ("Reason: %s",
-                  err ? err->message : "unknown reason"));
-        }
-        g_clear_error (&err);
-      } else {
-        num++;
-        client->bytes_sent += ret;
-        client->packets_sent++;
-        sink->bytes_served += ret;
-      }
-    }
-  }
-  g_mutex_unlock (&sink->client_lock);
 
-  /* unmap all memory again */
-  for (i = 0; i < n_mem; i++)
-    gst_memory_unmap (map[i].memory, &map[i]);
-
-  GST_LOG_OBJECT (sink, "sent %" G_GSIZE_FORMAT " bytes to %d (of %d) clients",
-      size, num, no_clients);
-
-  return GST_FLOW_OK;
-
-no_data:
-  {
-    return GST_FLOW_OK;
-  }
-flushing:
-  {
-    GST_DEBUG ("we are flushing");
-    g_mutex_unlock (&sink->client_lock);
-    g_clear_error (&err);
-
-    /* unmap all memory */
-    for (i = 0; i < n_mem; i++)
-      gst_memory_unmap (map[i].memory, &map[i]);
+  if (n_mem > 0)
+    flow = gst_multiudpsink_render_buffers (sink, &buffer, 1, &n_mem, n_mem);
+  else
+    flow = GST_FLOW_OK;
 
-    return GST_FLOW_FLUSHING;
-  }
+  return flow;
 }
 
 static void
-- 
2.7.4