From 9f2b989e2dd9c8e50a8b3accb2f5afdee045b89e Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Thu, 2 Oct 2014 00:24:31 +0200
Subject: source and sink are now same bin for video and audio

---
 src/pipelines.c | 106 ++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 76 insertions(+), 30 deletions(-)

(limited to 'src/pipelines.c')

diff --git a/src/pipelines.c b/src/pipelines.c
index abe6fca..c291549 100644
--- a/src/pipelines.c
+++ b/src/pipelines.c
@@ -43,14 +43,10 @@
 #include "utils.h"
 #include "log.h"
 
-
-
 struct av_elements {
   const char* name_;
 
-  const char* srcsink_str_;
   GstElement* srcsink_;
-
   GstElement* tee_raw_;
 
   const char* encdec_str_;
@@ -62,34 +58,58 @@ struct av_elements {
   GstElement* payloader_;
 };
 
-static gboolean create_avsend_elements(struct av_elements *ave, GstElement* pipeline, GstElement *rtp, uint32_t session)
+static GstElement* create_avsend_src(const char* desc, GstElement* pipeline)
 {
-  char bin_name[32];
+  GstElement* src = sydra_create_bin_from_desc("AV source", desc, FALSE);
+  if(!src) return NULL;
+  gst_bin_add(GST_BIN(pipeline), src);
+
+  GstElement* element = gst_bin_get_by_name(GST_BIN(src), "videosrc");
+  GstPad* pad = gst_element_get_static_pad(element, "src");
+  if(!gst_element_add_pad(src, gst_ghost_pad_new("video", pad))) {
+    log_printf(ERROR, "can't create video ghost pad for source bin");
+    return NULL;
+  }
+  gst_object_unref(GST_OBJECT(pad));
+  gst_object_unref(GST_OBJECT(element));
+
+  element = gst_bin_get_by_name(GST_BIN(src), "audiosrc");
+  pad = gst_element_get_static_pad(element, "src");
+  if(!gst_element_add_pad(src, gst_ghost_pad_new("audio", pad))) {
+    log_printf(ERROR, "can't create video ghost pad for source bin");
+    return NULL;
+  }
+  gst_object_unref(GST_OBJECT(pad));
+  gst_object_unref(GST_OBJECT(element));
+
+  return src;
+}
 
-  snprintf(bin_name, sizeof(bin_name), "%s source", ave->name_);
-  ave->srcsink_ = sydra_create_bin_from_desc(bin_name, ave->srcsink_str_, TRUE);
+static gboolean create_avsend_elements(struct av_elements *ave, GstElement* pipeline, GstElement *rtp, uint32_t session)
+{
   ave->tee_raw_ = sydra_create_element("tee", NULL);
   GstElement *qr = sydra_create_element("queue", NULL);
 
+  char bin_name[32];
   snprintf(bin_name, sizeof(bin_name), "%s encoder", ave->name_);
   ave->encdec_ = sydra_create_bin_from_desc(bin_name, ave->encdec_str_, TRUE);
   ave->tee_enc_ = sydra_create_element("tee", NULL);
   GstElement *qe = sydra_create_element("queue", NULL);
   ave->payloader_ = sydra_create_element(ave->payloader_str_, NULL);
 
-  if(!ave->srcsink_ || !ave->tee_raw_ || !qr || !ave->encdec_ || !ave->tee_enc_ || !qe || !ave->payloader_) {
+  if(!ave->tee_raw_ || !qr || !ave->encdec_ || !ave->tee_enc_ || !qe || !ave->payloader_) {
     return FALSE;
   }
 
   log_printf(DEBUG, "%s path created successfully!", ave->name_);
 
-  gst_bin_add_many (GST_BIN(pipeline), ave->srcsink_, ave->tee_raw_, qr, ave->encdec_, ave->tee_enc_, qe, ave->payloader_, NULL);
-  gst_element_link(ave->srcsink_, ave->tee_raw_);
+  gst_bin_add_many(GST_BIN(pipeline), ave->tee_raw_, qr, ave->encdec_, ave->tee_enc_, qe, ave->payloader_, NULL);
+  if(!sydra_link_static_static(ave->srcsink_, ave->name_, ave->tee_raw_, "sink")) return FALSE;
   gst_element_link_many(qr, ave->encdec_, ave->tee_enc_, NULL);
   gst_element_link(qe, ave->payloader_);
 
   char pad_name[32];
-  snprintf(pad_name, sizeof(bin_name), "send_rtp_sink_%u", session);
+  snprintf(pad_name, sizeof(pad_name), "send_rtp_sink_%u", session);
   if(!sydra_link_request_static(ave->tee_raw_, "src_%u", qr, "sink") ||
      !sydra_link_request_static(ave->tee_enc_, "src_%u", qe, "sink") ||
      !sydra_link_static_request(ave->payloader_, "src", rtp, pad_name)) {
@@ -100,29 +120,54 @@ static gboolean create_avsend_elements(struct av_elements *ave, GstElement* pipe
   return TRUE;
 }
 
-static gboolean create_avrecv_elements(struct av_elements *ave, GstElement* pipeline)
+static GstElement* create_avrecv_sink(const char* desc, GstElement* pipeline)
 {
-  char bin_name[32];
+  GstElement* sink = sydra_create_bin_from_desc("AV sink", desc, FALSE);
+  if(!sink) return NULL;
+  gst_bin_add(GST_BIN(pipeline), sink);
+
+  GstElement* element = gst_bin_get_by_name(GST_BIN(sink), "videosink");
+  GstPad* pad = gst_element_get_static_pad(element, "sink");
+  if(!gst_element_add_pad(sink, gst_ghost_pad_new("video", pad))) {
+    log_printf(ERROR, "can't create video ghost pad for source bin");
+    return NULL;
+  }
+  gst_object_unref(GST_OBJECT(pad));
+  gst_object_unref(GST_OBJECT(element));
+
+  element = gst_bin_get_by_name(GST_BIN(sink), "audiosink");
+  pad = gst_element_get_static_pad(element, "sink");
+  if(!gst_element_add_pad(sink, gst_ghost_pad_new("audio", pad))) {
+    log_printf(ERROR, "can't create video ghost pad for source bin");
+    return NULL;
+  }
+  gst_object_unref(GST_OBJECT(pad));
+  gst_object_unref(GST_OBJECT(element));
+
+  return sink;
+}
 
-  snprintf(bin_name, sizeof(bin_name), "%s sink", ave->name_);
-  ave->srcsink_ = sydra_create_bin_from_desc(bin_name, ave->srcsink_str_, TRUE);
+static gboolean create_avrecv_elements(struct av_elements *ave, GstElement* pipeline)
+{
   ave->tee_raw_ = sydra_create_element("tee", NULL);
   GstElement *qr = sydra_create_element("queue", NULL);
 
+  char bin_name[32];
   snprintf(bin_name, sizeof(bin_name), "%s decoder", ave->name_);
   ave->encdec_ = sydra_create_bin_from_desc(bin_name, ave->encdec_str_, TRUE);
   ave->tee_enc_ = sydra_create_element("tee", NULL);
   GstElement *qe = sydra_create_element("queue", NULL);
   ave->payloader_ = sydra_create_element(ave->payloader_str_, NULL);
 
-  if(!ave->srcsink_ || !ave->tee_raw_ || !qr || !ave->encdec_ || !ave->tee_enc_ || !qe || !ave->payloader_) {
+  if(!ave->tee_raw_ || !qr || !ave->encdec_ || !ave->tee_enc_ || !qe || !ave->payloader_) {
     return FALSE;
   }
 
   log_printf(DEBUG, "%s path created successfully!", ave->name_);
 
-  gst_bin_add_many (GST_BIN(pipeline), ave->srcsink_, ave->tee_raw_, qr, ave->encdec_, ave->tee_enc_, qe, ave->payloader_, NULL);
-  gst_element_link_many(ave->payloader_, ave->tee_enc_, qe, ave->encdec_, ave->tee_raw_, qr, ave->srcsink_, NULL);
+  gst_bin_add_many (GST_BIN(pipeline), ave->tee_raw_, qr, ave->encdec_, ave->tee_enc_, qe, ave->payloader_, NULL);
+  gst_element_link_many(ave->payloader_, ave->tee_enc_, qe, ave->encdec_, ave->tee_raw_, qr, NULL);
+  if(!sydra_link_static_static(qr, "sink", ave->srcsink_, ave->name_)) return FALSE;
 
   log_printf(DEBUG, "%s path linked successfully!", ave->name_);
   return TRUE;
@@ -314,16 +359,16 @@ GstElement* create_sender_pipeline(options_t* opt, struct udp_sinks *udp)
     return NULL;
   }
   GstElement *rtp = sydra_create_element("rtpbin", "rtpbin");
-  if(!rtp || !gst_bin_add(GST_BIN(pipeline), rtp)) {
-    return NULL;
-  }
+  if(!rtp || !gst_bin_add(GST_BIN(pipeline), rtp)) return NULL;
   log_printf(DEBUG, "rtpbin created successfully!");
 
-  struct av_elements video = { "video", opt->video_src_, NULL, NULL,
-                                  opt->video_enc_, NULL, NULL,
+  GstElement* src = create_avsend_src(opt->source_, pipeline);
+  if(!src) return NULL;
+  log_printf(DEBUG, "source bin created successfully!");
+
+  struct av_elements video = { "video", src, NULL, opt->video_enc_, NULL, NULL,
                                   opt->video_payloader_, NULL };
-  struct av_elements audio = { "audio", opt->audio_src_, NULL, NULL,
-                                  opt->audio_enc_, NULL, NULL,
+  struct av_elements audio = { "audio", src, NULL, opt->audio_enc_, NULL, NULL,
                                   opt->audio_payloader_, NULL };
   if(!create_avsend_elements(&video, pipeline, rtp, 0) ||
      !create_avsend_elements(&audio, pipeline, rtp, 1) ||
@@ -400,12 +445,13 @@ GstElement* create_receiver_pipeline(options_t* opt, struct udp_sources *udp)
   }
   log_printf(DEBUG, "rtpbin created successfully!");
 
+  GstElement* sink = create_avrecv_sink(opt->sink_, pipeline);
+  if(!sink) return NULL;
+  log_printf(DEBUG, "sink bin created successfully!");
 
-  struct av_elements video = { "video", opt->video_sink_, NULL, NULL,
-                                  opt->video_dec_, NULL, NULL,
+  struct av_elements video = { "video", sink, NULL, opt->video_dec_, NULL, NULL,
                                   opt->video_depayloader_, NULL };
-  struct av_elements audio = { "audio", opt->audio_sink_, NULL, NULL,
-                                  opt->audio_dec_, NULL, NULL,
+  struct av_elements audio = { "audio", sink, NULL, opt->audio_dec_, NULL, NULL,
                                   opt->audio_depayloader_, NULL };
   if(!create_udp_sources(opt, pipeline, rtp, udp) ||
      !create_avrecv_elements(&video, pipeline) ||
-- 
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