From 7ceb023682c426e50f01f5778b0655c42f823b83 Mon Sep 17 00:00:00 2001
From: Thiago Santos <thiago.sousa.santos@collabora.com>
Date: Fri, 16 Nov 2012 17:30:12 -0300
Subject: [PATCH] mssdemux: initial implementation of the pad loop

The loop will fetch a new fragment and push on its srcpad. Each
stream has its own loop
---
 ext/smoothstreaming/gstmssdemux.c | 83 ++++++++++++++++++++++++++++++++++++---
 ext/smoothstreaming/gstmssdemux.h |  9 +++++
 2 files changed, 87 insertions(+), 5 deletions(-)

diff --git a/ext/smoothstreaming/gstmssdemux.c b/ext/smoothstreaming/gstmssdemux.c
index eeefe57..8d4afaa 100644
--- a/ext/smoothstreaming/gstmssdemux.c
+++ b/ext/smoothstreaming/gstmssdemux.c
@@ -69,6 +69,8 @@ gst_mss_demux_change_state (GstElement * element, GstStateChange transition);
 static GstFlowReturn gst_mss_demux_chain (GstPad * pad, GstBuffer * buffer);
 static GstFlowReturn gst_mss_demux_event (GstPad * pad, GstEvent * event);
 
+static void gst_mss_demux_stream_loop (GstMssDemuxStream * stream);
+
 static void gst_mss_demux_process_manifest (GstMssDemux * mssdemux);
 
 static void
@@ -119,6 +121,52 @@ gst_mss_demux_init (GstMssDemux * mssdemux, GstMssDemuxClass * klass)
   gst_element_add_pad (GST_ELEMENT_CAST (mssdemux), mssdemux->sinkpad);
 }
 
+static GstMssDemuxStream *
+gst_mss_demux_stream_new (GstMssDemux * mssdemux,
+    GstMssManifestStream * manifeststream, GstPad * srcpad)
+{
+  GstMssDemuxStream *stream;
+
+  stream = g_new0 (GstMssDemuxStream, 1);
+  stream->downloader = gst_uri_downloader_new ();
+
+  /* Streaming task */
+  g_static_rec_mutex_init (&stream->stream_lock);
+  stream->stream_task =
+      gst_task_create ((GstTaskFunction) gst_mss_demux_stream_loop, stream);
+  gst_task_set_lock (stream->stream_task, &stream->stream_lock);
+
+  stream->pad = srcpad;
+  stream->manifest_stream = manifeststream;
+  stream->parent = mssdemux;
+
+  return stream;
+}
+
+static void
+gst_mss_demux_stream_free (GstMssDemuxStream * stream)
+{
+  if (stream->stream_task) {
+    if (GST_TASK_STATE (stream->stream_task) != GST_TASK_STOPPED) {
+      GST_DEBUG_OBJECT (stream->parent, "Leaving streaming task %s:%s",
+          GST_DEBUG_PAD_NAME (stream->pad));
+      gst_task_stop (stream->stream_task);
+      g_static_rec_mutex_lock (&stream->stream_lock);
+      g_static_rec_mutex_unlock (&stream->stream_lock);
+      gst_task_join (stream->stream_task);
+    }
+    gst_object_unref (stream->stream_task);
+    g_static_rec_mutex_free (&stream->stream_lock);
+    stream->stream_task = NULL;
+  }
+
+  if (stream->downloader != NULL) {
+    g_object_unref (stream->downloader);
+    stream->downloader = NULL;
+  }
+  g_free (stream);
+}
+
 static void
 gst_mss_demux_reset (GstMssDemux * mssdemux)
 {
@@ -131,7 +179,7 @@ gst_mss_demux_reset (GstMssDemux * mssdemux)
   for (iter = mssdemux->streams; iter; iter = g_slist_next (iter)) {
     GstMssDemuxStream *stream = iter->data;
     gst_element_remove_pad (GST_ELEMENT_CAST (mssdemux), stream->pad);
-    g_free (stream);
+    gst_mss_demux_stream_free (stream);
   }
   g_slist_free (mssdemux->streams);
   mssdemux->streams = NULL;
@@ -266,11 +314,8 @@ gst_mss_demux_create_streams (GstMssDemux * mssdemux)
       continue;
     }
 
-    stream = g_new (GstMssDemuxStream, 1);
-    stream->pad = srcpad;
-    stream->manifest_stream = manifeststream;
+    stream = gst_mss_demux_stream_new (mssdemux, manifeststream, srcpad);
     mssdemux->streams = g_slist_append (mssdemux->streams, stream);
-
   }
 }
 
@@ -327,3 +372,31 @@ gst_mss_demux_process_manifest (GstMssDemux * mssdemux)
     gst_mss_demux_expose_stream (mssdemux, iter->data);
   }
 }
+
+static void
+gst_mss_demux_stream_loop (GstMssDemuxStream * stream)
+{
+  gchar *url;
+  GstFragment *fragment;
+  GstBufferList *buflist;
+  GstFlowReturn ret;
+
+  ret = gst_mss_manifest_stream_get_fragment_url (stream->manifest_stream,
+      &url);
+  switch (ret) {
+    default:
+      break;
+  }
+  if (!url) {
+    /* TODO */
+  }
+
+  fragment = gst_uri_downloader_fetch_uri (stream->downloader, url);
+  g_free (url);
+
+  buflist = gst_fragment_get_buffer_list (fragment);
+
+  ret = gst_pad_push_list (stream->pad, buflist);       /* TODO check return */
+
+  ret = gst_mss_manifest_stream_advance_fragment (stream->manifest_stream);
+}
diff --git a/ext/smoothstreaming/gstmssdemux.h b/ext/smoothstreaming/gstmssdemux.h
index 2b14134..9fb0ecd 100644
--- a/ext/smoothstreaming/gstmssdemux.h
+++ b/ext/smoothstreaming/gstmssdemux.h
@@ -26,6 +26,7 @@
 #include <gst/gst.h>
 #include <gst/base/gstadapter.h>
 #include "gstmssmanifest.h"
+#include "gsturidownloader.h"
 
 G_BEGIN_DECLS
 
@@ -52,7 +53,15 @@ typedef struct _GstMssDemuxClass GstMssDemuxClass;
 struct _GstMssDemuxStream {
   GstPad *pad;
 
+  GstMssDemux *parent;
+
   GstMssManifestStream *manifest_stream;
+
+  GstUriDownloader *downloader;
+
+  /* Streaming task */
+  GstTask *stream_task;
+  GStaticRecMutex stream_lock;
 };
 
 struct _GstMssDemux {
-- 
2.7.4