Merge remote-tracking branch 'origin/0.10'

gst/hls/Makefile.am

@@ -4,6 +4,8 @@ plugin_LTLIBRARIES = libgstfragmented.la
 libgstfragmented_la_SOURCES =			\
 	m3u8.c					\
 	gsthlsdemux.c				\
+	gstfragment.c				\
+	gsturidownloader.c			\
 	gstfragmentedplugin.c
 
 libgstfragmented_la_CFLAGS = $(GST_PLUGINS_BAD_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(SOUP_CFLAGS)
@@ -14,7 +16,9 @@ libgstfragmented_la_LIBTOOLFLAGS = --tag=disable-static
 # headers we need but don't want installed
 noinst_HEADERS = 			\
 	gstfragmented.h		\
+	gstfragment.h				\
 	gsthlsdemux.h			\
+	gsturidownloader.h			\
 	m3u8.h
 
 Android.mk: Makefile.am $(BUILT_SOURCES)

gst/hls/gstfragment.c

@@ -0,0 +1,222 @@
+/* GStreamer
+ * Copyright (C) 2011 Andoni Morales Alastruey <ylatuya@gmail.com>
+ *
+ * gstfragment.c:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <glib.h>
+#include "gstfragmented.h"
+#include "gstfragment.h"
+
+#define GST_CAT_DEFAULT fragmented_debug
+
+#define GST_FRAGMENT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_FRAGMENT, GstFragmentPrivate))
+
+enum
+{
+  PROP_0,
+  PROP_INDEX,
+  PROP_NAME,
+  PROP_DURATION,
+  PROP_DISCONTINOUS,
+  PROP_BUFFER_LIST,
+  PROP_LAST
+};
+
+struct _GstFragmentPrivate
+{
+  GstBufferList *buffer_list;
+  GstBufferListIterator *buffer_iterator;
+  gboolean headers_set;
+};
+
+G_DEFINE_TYPE (GstFragment, gst_fragment, G_TYPE_OBJECT);
+
+static void gst_fragment_dispose (GObject * object);
+static void gst_fragment_finalize (GObject * object);
+
+static void
+gst_fragment_get_property (GObject * object,
+    guint property_id, GValue * value, GParamSpec * pspec)
+{
+  GstFragment *fragment = GST_FRAGMENT (object);
+
+  switch (property_id) {
+    case PROP_INDEX:
+      g_value_set_uint (value, fragment->index);
+      break;
+
+    case PROP_NAME:
+      g_value_set_string (value, fragment->name);
+      break;
+
+    case PROP_DURATION:
+      g_value_set_uint64 (value, fragment->stop_time - fragment->start_time);
+      break;
+
+    case PROP_DISCONTINOUS:
+      g_value_set_boolean (value, fragment->discontinuous);
+      break;
+
+    case PROP_BUFFER_LIST:
+      g_value_set_object (value, gst_fragment_get_buffer_list (fragment));
+      break;
+
+    default:
+      /* We don't have any other property... */
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_fragment_class_init (GstFragmentClass * klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (GstFragmentPrivate));
+
+  gobject_class->get_property = gst_fragment_get_property;
+  gobject_class->dispose = gst_fragment_dispose;
+  gobject_class->finalize = gst_fragment_finalize;
+
+  g_object_class_install_property (gobject_class, PROP_INDEX,
+      g_param_spec_uint ("index", "Index", "Index of the fragment", 0,
+          G_MAXUINT, 0, G_PARAM_READABLE));
+
+  g_object_class_install_property (gobject_class, PROP_NAME,
+      g_param_spec_string ("name", "Name",
+          "Name of the fragment (eg:fragment-12.ts)", NULL, G_PARAM_READABLE));
+
+  g_object_class_install_property (gobject_class, PROP_DISCONTINOUS,
+      g_param_spec_boolean ("discontinuous", "Discontinous",
+          "Whether this fragment has a discontinuity or not",
+          FALSE, G_PARAM_READABLE));
+
+  g_object_class_install_property (gobject_class, PROP_DURATION,
+      g_param_spec_uint64 ("duration", "Fragment duration",
+          "Duration of the fragment", 0, G_MAXUINT64, 0, G_PARAM_READABLE));
+
+  g_object_class_install_property (gobject_class, PROP_BUFFER_LIST,
+      g_param_spec_object ("buffer-list", "Buffer List",
+          "A list with the fragment's buffers", GST_TYPE_FRAGMENT,
+          G_PARAM_READABLE));
+}
+
+static void
+gst_fragment_init (GstFragment * fragment)
+{
+  GstFragmentPrivate *priv;
+
+  fragment->priv = priv = GST_FRAGMENT_GET_PRIVATE (fragment);
+
+  priv->buffer_list = gst_buffer_list_new ();
+  priv->buffer_iterator = gst_buffer_list_iterate (priv->buffer_list);
+  gst_buffer_list_iterator_add_group (priv->buffer_iterator);
+  priv->headers_set = FALSE;
+  fragment->download_start_time = g_get_real_time ();
+  fragment->start_time = 0;
+  fragment->stop_time = 0;
+  fragment->index = 0;
+  fragment->name = g_strdup ("");
+  fragment->completed = FALSE;
+  fragment->discontinuous = FALSE;
+}
+
+GstFragment *
+gst_fragment_new (void)
+{
+  return GST_FRAGMENT (g_object_new (GST_TYPE_FRAGMENT, NULL));
+}
+
+static void
+gst_fragment_finalize (GObject * gobject)
+{
+  GstFragment *fragment = GST_FRAGMENT (gobject);
+
+  g_free (fragment->name);
+
+  G_OBJECT_CLASS (gst_fragment_parent_class)->finalize (gobject);
+}
+
+void
+gst_fragment_dispose (GObject * object)
+{
+  GstFragmentPrivate *priv = GST_FRAGMENT (object)->priv;
+
+  if (priv->buffer_list != NULL) {
+    gst_buffer_list_iterator_free (priv->buffer_iterator);
+    gst_buffer_list_unref (priv->buffer_list);
+    priv->buffer_list = NULL;
+  }
+
+  G_OBJECT_CLASS (gst_fragment_parent_class)->dispose (object);
+}
+
+GstBufferList *
+gst_fragment_get_buffer_list (GstFragment * fragment)
+{
+  g_return_val_if_fail (fragment != NULL, NULL);
+
+  if (!fragment->completed)
+    return NULL;
+
+  gst_buffer_list_ref (fragment->priv->buffer_list);
+  return fragment->priv->buffer_list;
+}
+
+gboolean
+gst_fragment_set_headers (GstFragment * fragment, GstBuffer ** buffer,
+    guint count)
+{
+  guint i;
+
+  g_return_val_if_fail (fragment != NULL, FALSE);
+  g_return_val_if_fail (buffer != NULL, FALSE);
+
+  if (fragment->priv->headers_set)
+    return FALSE;
+
+  for (i = 0; i < count; i++) {
+    /* We steal the buffers you pass in */
+    gst_buffer_list_iterator_add (fragment->priv->buffer_iterator, buffer[i]);
+    gst_buffer_list_iterator_add_group (fragment->priv->buffer_iterator);
+  }
+  return TRUE;
+}
+
+gboolean
+gst_fragment_add_buffer (GstFragment * fragment, GstBuffer * buffer)
+{
+  g_return_val_if_fail (fragment != NULL, FALSE);
+  g_return_val_if_fail (buffer != NULL, FALSE);
+
+  if (fragment->completed) {
+    GST_WARNING ("Fragment is completed, could not add more buffers");
+    return FALSE;
+  }
+
+  /* if this is the first buffer forbid setting the headers anymore */
+  if (G_UNLIKELY (fragment->priv->headers_set == FALSE))
+    fragment->priv->headers_set = TRUE;
+
+  GST_DEBUG ("Adding new buffer to the fragment");
+  /* We steal the buffers you pass in */
+  gst_buffer_list_iterator_add (fragment->priv->buffer_iterator, buffer);
+  return TRUE;
+}

gst/hls/gstfragment.h

@@ -0,0 +1,69 @@
+/* GStreamer
+ * Copyright (C) 2011 Andoni Morales Alastruey <ylatuya@gmail.com>
+ *
+ * gstfragment.h:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GSTFRAGMENT_H__
+#define __GSTFRAGMENT_H__
+
+#include <glib-object.h>
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_FRAGMENT (gst_fragment_get_type())
+#define GST_FRAGMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FRAGMENT,GstFragment))
+#define GST_FRAGMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FRAGMENT,GstFragmentClass))
+#define GST_IS_FRAGMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FRAGMENT))
+#define GST_IS_FRAGMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FRAGMENT))
+
+typedef struct _GstFragment GstFragment;
+typedef struct _GstFragmentPrivate GstFragmentPrivate;
+typedef struct _GstFragmentClass GstFragmentClass;
+
+struct _GstFragment
+{
+  GObject parent;
+
+  gchar * name;                 /* Name of the fragment */
+  gboolean completed;           /* Whether the fragment is complete or not */
+  guint64 download_start_time;  /* Epoch time when the download started */
+  guint64 download_stop_time;   /* Epoch time when the download finished */
+  guint64 start_time;           /* Start time of the fragment */
+  guint64 stop_time;            /* Stop time of the fragment */
+  gboolean index;               /* Index of the fragment */
+  gboolean discontinuous;       /* Whether this fragment is discontinuous or not */
+
+  GstFragmentPrivate *priv;
+};
+
+struct _GstFragmentClass
+{
+  GObjectClass parent_class;
+};
+
+GType gst_fragment_get_type (void);
+
+GstBufferList * gst_fragment_get_buffer_list (GstFragment *fragment);
+gboolean gst_fragment_set_headers (GstFragment *fragment, GstBuffer **buffer, guint count);
+gboolean gst_fragment_add_buffer (GstFragment *fragment, GstBuffer *buffer);
+GstFragment * gst_fragment_new (void);
+
+G_END_DECLS
+#endif /* __GSTFRAGMENT_H__ */

gst/hls/gsthlsdemux.c

@@ -60,11 +60,6 @@ static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS ("application/x-hls"));
 
-static GstStaticPadTemplate fetchertemplate = GST_STATIC_PAD_TEMPLATE ("sink",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS_ANY);
-
 GST_DEBUG_CATEGORY_STATIC (gst_hls_demux_debug);
 #define GST_CAT_DEFAULT gst_hls_demux_debug
 
@@ -95,31 +90,23 @@ static GstStateChangeReturn
 gst_hls_demux_change_state (GstElement * element, GstStateChange transition);
 
 /* GstHLSDemux */
-static GstBusSyncReply gst_hls_demux_fetcher_bus_handler (GstBus * bus,
-    GstMessage * message, gpointer data);
 static GstFlowReturn gst_hls_demux_chain (GstPad * pad, GstBuffer * buf);
 static gboolean gst_hls_demux_sink_event (GstPad * pad, GstEvent * event);
 static gboolean gst_hls_demux_src_event (GstPad * pad, GstEvent * event);
 static gboolean gst_hls_demux_src_query (GstPad * pad, GstQuery * query);
-static GstFlowReturn gst_hls_demux_fetcher_chain (GstPad * pad,
+static void gst_hls_demux_stream_loop (GstHLSDemux * demux);
-    GstBuffer * buf);
+static void gst_hls_demux_updates_loop (GstHLSDemux * demux);
-static gboolean gst_hls_demux_fetcher_sink_event (GstPad * pad,
-    GstEvent * event);
-static void gst_hls_demux_loop (GstHLSDemux * demux);
 static void gst_hls_demux_stop (GstHLSDemux * demux);
-static void gst_hls_demux_stop_fetcher_locked (GstHLSDemux * demux,
-    gboolean cancelled);
-static void gst_hls_demux_stop_update (GstHLSDemux * demux);
-static gboolean gst_hls_demux_start_update (GstHLSDemux * demux);
 static gboolean gst_hls_demux_cache_fragments (GstHLSDemux * demux);
 static gboolean gst_hls_demux_schedule (GstHLSDemux * demux);
 static gboolean gst_hls_demux_switch_playlist (GstHLSDemux * demux);
-static gboolean gst_hls_demux_get_next_fragment (GstHLSDemux * demux);
+static gboolean gst_hls_demux_get_next_fragment (GstHLSDemux * demux,
+    gboolean caching);
 static gboolean gst_hls_demux_update_playlist (GstHLSDemux * demux);
 static void gst_hls_demux_reset (GstHLSDemux * demux, gboolean dispose);
 static gboolean gst_hls_demux_set_location (GstHLSDemux * demux,
     const gchar * uri);
-static gchar *gst_hls_src_buf_to_utf8_playlist (gchar * string, guint size);
+static gchar *gst_hls_src_buf_to_utf8_playlist (GstBuffer * buf);
 
 static void
 _do_init (GType type)
@@ -155,23 +142,37 @@ gst_hls_demux_dispose (GObject * obj)
 {
   GstHLSDemux *demux = GST_HLS_DEMUX (obj);
 
-  g_cond_free (demux->fetcher_cond);
+  if (demux->stream_task) {
-  g_mutex_free (demux->fetcher_lock);
+    if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED) {
+      GST_DEBUG_OBJECT (demux, "Leaving streaming task");
+      gst_task_stop (demux->stream_task);
+      gst_task_join (demux->stream_task);
+    }
+    gst_object_unref (demux->stream_task);
+    g_static_rec_mutex_free (&demux->stream_lock);
+    demux->stream_task = NULL;
+  }
 
-  g_cond_free (demux->thread_cond);
+  if (demux->updates_task) {
-  g_mutex_free (demux->thread_lock);
+    if (GST_TASK_STATE (demux->updates_task) != GST_TASK_STOPPED) {
+      GST_DEBUG_OBJECT (demux, "Leaving updates task");
+      gst_task_stop (demux->updates_task);
+      gst_task_join (demux->updates_task);
+    }
+    gst_object_unref (demux->updates_task);
+    g_mutex_free (demux->updates_timed_lock);
+    g_static_rec_mutex_free (&demux->updates_lock);
+    demux->updates_task = NULL;
+  }
 
-  gst_task_join (demux->task);
+  if (demux->downloader != NULL) {
-  gst_object_unref (demux->task);
+    g_object_unref (demux->downloader);
-  g_static_rec_mutex_free (&demux->task_lock);
+    demux->downloader = NULL;
-
+  }
-  gst_object_unref (demux->fetcher_bus);
-  gst_object_unref (demux->fetcherpad);
 
   gst_hls_demux_reset (demux, TRUE);
 
   g_queue_free (demux->queue);
-  gst_object_unref (demux->download);
 
   G_OBJECT_CLASS (parent_class)->dispose (obj);
 }
@@ -218,15 +219,8 @@ gst_hls_demux_init (GstHLSDemux * demux, GstHLSDemuxClass * klass)
       GST_DEBUG_FUNCPTR (gst_hls_demux_sink_event));
   gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
 
-  /* fetcher pad */
+  /* Downloader */
-  demux->fetcherpad =
+  demux->downloader = gst_uri_downloader_new ();
-      gst_pad_new_from_static_template (&fetchertemplate, "sink");
-  gst_pad_set_chain_function (demux->fetcherpad,
-      GST_DEBUG_FUNCPTR (gst_hls_demux_fetcher_chain));
-  gst_pad_set_event_function (demux->fetcherpad,
-      GST_DEBUG_FUNCPTR (gst_hls_demux_fetcher_sink_event));
-  gst_pad_set_element_private (demux->fetcherpad, demux);
-  gst_pad_activate_push (demux->fetcherpad, TRUE);
 
   demux->do_typefind = TRUE;
 
@@ -234,19 +228,20 @@ gst_hls_demux_init (GstHLSDemux * demux, GstHLSDemuxClass * klass)
   demux->fragments_cache = DEFAULT_FRAGMENTS_CACHE;
   demux->bitrate_switch_tol = DEFAULT_BITRATE_SWITCH_TOLERANCE;
 
-  demux->download = gst_adapter_new ();
-  demux->fetcher_bus = gst_bus_new ();
-  gst_bus_set_sync_handler (demux->fetcher_bus,
-      gst_hls_demux_fetcher_bus_handler, demux);
-  demux->thread_cond = g_cond_new ();
-  demux->thread_lock = g_mutex_new ();
-  demux->fetcher_cond = g_cond_new ();
-  demux->fetcher_lock = g_mutex_new ();
   demux->queue = g_queue_new ();
-  g_static_rec_mutex_init (&demux->task_lock);
+
-  /* FIXME: This really should be a pad task instead */
+  /* Updates task */
-  demux->task = gst_task_create ((GstTaskFunction) gst_hls_demux_loop, demux);
+  g_static_rec_mutex_init (&demux->updates_lock);
-  gst_task_set_lock (demux->task, &demux->task_lock);
+  demux->updates_task =
+      gst_task_create ((GstTaskFunction) gst_hls_demux_updates_loop, demux);
+  gst_task_set_lock (demux->updates_task, &demux->updates_lock);
+  demux->updates_timed_lock = g_mutex_new ();
+
+  /* Streaming task */
+  g_static_rec_mutex_init (&demux->stream_lock);
+  demux->stream_task =
+      gst_task_create ((GstTaskFunction) gst_hls_demux_stream_loop, demux);
+  gst_task_set_lock (demux->stream_task, &demux->stream_lock);
 }
 
 static void
@@ -303,7 +298,7 @@ gst_hls_demux_change_state (GstElement * element, GstStateChange transition)
          state and we filled our queue with enough cached fragments
        */
       if (gst_m3u8_client_get_uri (demux->client)[0] != '\0')
-        gst_hls_demux_start_update (demux);
+        gst_task_start (demux->updates_task);
       break;
     default:
       break;
@@ -313,12 +308,12 @@ gst_hls_demux_change_state (GstElement * element, GstStateChange transition)
 
   switch (transition) {
     case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
-      gst_hls_demux_stop_update (demux);
+      gst_task_stop (demux->updates_task);
       break;
     case GST_STATE_CHANGE_PAUSED_TO_READY:
       demux->cancelled = TRUE;
       gst_hls_demux_stop (demux);
-      gst_task_join (demux->task);
+      gst_task_join (demux->stream_task);
       gst_hls_demux_reset (demux, FALSE);
       break;
     default:
@@ -392,23 +387,20 @@ gst_hls_demux_src_event (GstPad * pad, GstEvent * event)
       }
 
       demux->cancelled = TRUE;
-      gst_task_pause (demux->task);
+      gst_task_pause (demux->stream_task);
-      g_mutex_lock (demux->fetcher_lock);
+      gst_uri_downloader_cancel (demux->downloader);
-      gst_hls_demux_stop_fetcher_locked (demux, TRUE);
+      gst_task_stop (demux->updates_task);
-      g_mutex_unlock (demux->fetcher_lock);
+      gst_task_pause (demux->stream_task);
-      gst_hls_demux_stop_update (demux);
-      gst_task_pause (demux->task);
 
       /* wait for streaming to finish */
-      g_static_rec_mutex_lock (&demux->task_lock);
+      g_static_rec_mutex_lock (&demux->stream_lock);
 
       demux->need_cache = TRUE;
       while (!g_queue_is_empty (demux->queue)) {
-        GstBuffer *buf = g_queue_pop_head (demux->queue);
+        GstBufferList *buf_list = g_queue_pop_head (demux->queue);
-        gst_buffer_unref (buf);
+        gst_buffer_list_unref (buf_list);
       }
       g_queue_clear (demux->queue);
-      gst_adapter_clear (demux->download);
 
       GST_M3U8_CLIENT_LOCK (demux->client);
       GST_DEBUG_OBJECT (demux, "seeking to sequence %d", current_sequence);
@@ -425,8 +417,8 @@ gst_hls_demux_src_event (GstPad * pad, GstEvent * event)
       }
 
       demux->cancelled = FALSE;
-      gst_task_start (demux->task);
+      gst_task_start (demux->stream_task);
-      g_static_rec_mutex_unlock (&demux->task_lock);
+      g_static_rec_mutex_unlock (&demux->stream_lock);
 
       return TRUE;
     }
@@ -467,9 +459,7 @@ gst_hls_demux_sink_event (GstPad * pad, GstEvent * event)
       }
       gst_query_unref (query);
 
-      playlist = gst_hls_src_buf_to_utf8_playlist ((gchar *)
+      playlist = gst_hls_src_buf_to_utf8_playlist (demux->playlist);
-          GST_BUFFER_DATA (demux->playlist), GST_BUFFER_SIZE (demux->playlist));
-      gst_buffer_unref (demux->playlist);
       demux->playlist = NULL;
       if (playlist == NULL) {
         GST_WARNING_OBJECT (demux, "Error validating first playlist.");
@@ -489,7 +479,7 @@ gst_hls_demux_sink_event (GstPad * pad, GstEvent * event)
         return FALSE;
       }
 
-      gst_task_start (demux->task);
+      gst_task_start (demux->stream_task);
       gst_event_unref (event);
       return TRUE;
     }
@@ -572,27 +562,6 @@ gst_hls_demux_src_query (GstPad * pad, GstQuery * query)
   return ret;
 }
 
-static gboolean
-gst_hls_demux_fetcher_sink_event (GstPad * pad, GstEvent * event)
-{
-  GstHLSDemux *demux = GST_HLS_DEMUX (gst_pad_get_element_private (pad));
-
-  switch (event->type) {
-    case GST_EVENT_EOS:{
-      GST_DEBUG_OBJECT (demux, "Got EOS on the fetcher pad");
-      /* signal we have fetched the URI */
-      if (!demux->cancelled) {
-        g_cond_broadcast (demux->fetcher_cond);
-      }
-    }
-    default:
-      break;
-  }
-
-  gst_event_unref (event);
-  return FALSE;
-}
-
 static GstFlowReturn
 gst_hls_demux_chain (GstPad * pad, GstBuffer * buf)
 {
@@ -608,72 +577,19 @@ gst_hls_demux_chain (GstPad * pad, GstBuffer * buf)
   return GST_FLOW_OK;
 }
 
-static GstFlowReturn
-gst_hls_demux_fetcher_chain (GstPad * pad, GstBuffer * buf)
-{
-  GstHLSDemux *demux = GST_HLS_DEMUX (gst_pad_get_element_private (pad));
-
-  /* The source element can be an http source element. In case we get a 404,
-   * the html response will be sent downstream and the adapter
-   * will not be null, which might make us think that the request proceed
-   * successfully. But it will also post an error message in the bus that
-   * is handled synchronously and that will set demux->fetcher_error to TRUE,
-   * which is used to discard this buffer with the html response. */
-  if (demux->fetcher_error) {
-    goto done;
-  }
-
-  gst_adapter_push (demux->download, buf);
-
-done:
-  {
-    return GST_FLOW_OK;
-  }
-}
-
-static void
-gst_hls_demux_stop_fetcher_locked (GstHLSDemux * demux, gboolean cancelled)
-{
-  GstPad *pad;
-
-  /* When the fetcher is stopped while it's downloading, we will get an EOS that
-   * unblocks the fetcher thread and tries to stop it again from that thread.
-   * Here we check if the fetcher as already been stopped before continuing */
-  if (demux->fetcher == NULL || demux->stopping_fetcher)
-    return;
-
-  GST_DEBUG_OBJECT (demux, "Stopping fetcher.");
-  demux->stopping_fetcher = TRUE;
-  /* set the element state to NULL */
-  gst_element_set_state (demux->fetcher, GST_STATE_NULL);
-  gst_element_get_state (demux->fetcher, NULL, NULL, GST_CLOCK_TIME_NONE);
-  /* unlink it from the internal pad */
-  pad = gst_pad_get_peer (demux->fetcherpad);
-  if (pad) {
-    gst_pad_unlink (pad, demux->fetcherpad);
-    gst_object_unref (pad);
-  }
-  /* and finally unref it */
-  gst_object_unref (demux->fetcher);
-  demux->fetcher = NULL;
-
-  /* if we stopped it to cancell a download, free the cached buffer */
-  if (cancelled && gst_adapter_available (demux->download)) {
-    gst_adapter_clear (demux->download);
-  }
-  /* signal the fetcher thread that the download has finished/cancelled */
-  if (cancelled)
-    g_cond_broadcast (demux->fetcher_cond);
-}
-
 static void
 gst_hls_demux_stop (GstHLSDemux * demux)
 {
-  g_mutex_lock (demux->fetcher_lock);
+  gst_uri_downloader_cancel (demux->downloader);
-  gst_hls_demux_stop_fetcher_locked (demux, TRUE);
+
-  g_mutex_unlock (demux->fetcher_lock);
+  if (GST_TASK_STATE (demux->updates_task) != GST_TASK_STOPPED) {
-  gst_task_stop (demux->task);
+    demux->stop_stream_task = TRUE;
-  gst_hls_demux_stop_update (demux);
+    gst_task_stop (demux->updates_task);
+    GST_TASK_SIGNAL (demux->updates_task);
+  }
+
+  if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED)
+    gst_task_stop (demux->stream_task);
 }
 
 static void
@@ -681,7 +597,8 @@ switch_pads (GstHLSDemux * demux, GstCaps * newcaps)
 {
   GstPad *oldpad = demux->srcpad;
 
-  GST_DEBUG ("Switching pads (oldpad:%p)", oldpad);
+  GST_DEBUG ("Switching pads (oldpad:%p) with caps: %" GST_PTR_FORMAT, oldpad,
+      newcaps);
 
   /* FIXME: This is a workaround for a bug in playsink.
    * If we're switching from an audio-only or video-only fragment
@@ -717,8 +634,9 @@ switch_pads (GstHLSDemux * demux, GstCaps * newcaps)
 }
 
 static void
-gst_hls_demux_loop (GstHLSDemux * demux)
+gst_hls_demux_stream_loop (GstHLSDemux * demux)
 {
+  GstBufferList *buffer_list;
   GstBuffer *buf;
   GstFlowReturn ret;
 
@@ -734,7 +652,7 @@ gst_hls_demux_loop (GstHLSDemux * demux)
 
     /* we can start now the updates thread (only if on playing) */
     if (GST_STATE (demux) == GST_STATE_PLAYING)
-      gst_hls_demux_start_update (demux);
+      gst_task_start (demux->updates_task);
     GST_INFO_OBJECT (demux, "First fragments cached successfully");
   }
 
@@ -745,8 +663,9 @@ gst_hls_demux_loop (GstHLSDemux * demux)
     goto pause_task;
   }
 
-  buf = g_queue_pop_head (demux->queue);
+  buffer_list = g_queue_pop_head (demux->queue);
-
+  /* Work with the first buffer of the list */
+  buf = gst_buffer_list_get (buffer_list, 0, 0);
   /* Figure out if we need to create/switch pads */
   if (G_UNLIKELY (!demux->srcpad
           || GST_BUFFER_CAPS (buf) != GST_PAD_CAPS (demux->srcpad)
@@ -769,9 +688,9 @@ gst_hls_demux_loop (GstHLSDemux * demux)
   if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DURATION (buf)))
     demux->position += GST_BUFFER_DURATION (buf);
 
-  ret = gst_pad_push (demux->srcpad, buf);
+  ret = gst_pad_push_list (demux->srcpad, buffer_list);
   if (ret != GST_FLOW_OK)
-    goto error;
+    goto error_pushing;
 
   return;
 
@@ -785,7 +704,7 @@ end_of_playlist:
 
 cache_error:
   {
-    gst_task_pause (demux->task);
+    gst_task_pause (demux->stream_task);
     if (!demux->cancelled) {
       GST_ELEMENT_ERROR (demux, RESOURCE, NOT_FOUND,
           ("Could not cache the first fragments"), (NULL));
@@ -794,70 +713,26 @@ cache_error:
     return;
   }
 
-error:
+error_pushing:
   {
     /* FIXME: handle error */
-    GST_DEBUG_OBJECT (demux, "error, stopping task");
+    GST_DEBUG_OBJECT (demux, "Error pushing buffer: %s... stopping task",
+        gst_flow_get_name (ret));
     gst_hls_demux_stop (demux);
     return;
   }
 
 pause_task:
   {
-    gst_task_pause (demux->task);
+    gst_task_pause (demux->stream_task);
     return;
   }
 }
 
-static GstBusSyncReply
-gst_hls_demux_fetcher_bus_handler (GstBus * bus,
-    GstMessage * message, gpointer data)
-{
-  GstHLSDemux *demux = GST_HLS_DEMUX (data);
-
-  if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ERROR) {
-    demux->fetcher_error = TRUE;
-    if (!demux->cancelled) {
-      g_mutex_lock (demux->fetcher_lock);
-      g_cond_broadcast (demux->fetcher_cond);
-      g_mutex_unlock (demux->fetcher_lock);
-    }
-  }
-
-  gst_message_unref (message);
-  return GST_BUS_DROP;
-}
-
-static gboolean
-gst_hls_demux_make_fetcher_locked (GstHLSDemux * demux, const gchar * uri)
-{
-  GstPad *pad;
-
-  if (!gst_uri_is_valid (uri))
-    return FALSE;
-
-  GST_DEBUG_OBJECT (demux, "Creating fetcher for the URI:%s", uri);
-  demux->fetcher = gst_element_make_from_uri (GST_URI_SRC, uri, NULL);
-  if (!demux->fetcher)
-    return FALSE;
-
-  demux->fetcher_error = FALSE;
-  demux->stopping_fetcher = FALSE;
-  gst_element_set_bus (GST_ELEMENT (demux->fetcher), demux->fetcher_bus);
-
-  pad = gst_element_get_static_pad (demux->fetcher, "src");
-  if (pad) {
-    gst_pad_link (pad, demux->fetcherpad);
-    gst_object_unref (pad);
-  }
-  return TRUE;
-}
-
 static void
 gst_hls_demux_reset (GstHLSDemux * demux, gboolean dispose)
 {
   demux->need_cache = TRUE;
-  demux->thread_return = FALSE;
   demux->accumulated_delay = 0;
   demux->end_of_playlist = FALSE;
   demux->cancelled = FALSE;
@@ -873,8 +748,6 @@ gst_hls_demux_reset (GstHLSDemux * demux, gboolean dispose)
     demux->playlist = NULL;
   }
 
-  gst_adapter_clear (demux->download);
-
   if (demux->client) {
     gst_m3u8_client_free (demux->client);
     demux->client = NULL;
@@ -885,8 +758,8 @@ gst_hls_demux_reset (GstHLSDemux * demux, gboolean dispose)
   }
 
   while (!g_queue_is_empty (demux->queue)) {
-    GstBuffer *buf = g_queue_pop_head (demux->queue);
+    GstBufferList *buffer_list = g_queue_pop_head (demux->queue);
-    gst_buffer_unref (buf);
+    gst_buffer_list_unref (buffer_list);
   }
   g_queue_clear (demux->queue);
 
@@ -905,8 +778,8 @@ gst_hls_demux_set_location (GstHLSDemux * demux, const gchar * uri)
   return TRUE;
 }
 
-static gboolean
+void
-gst_hls_demux_update_thread (GstHLSDemux * demux)
+gst_hls_demux_updates_loop (GstHLSDemux * demux)
 {
   /* Loop for the updates. It's started when the first fragments are cached and
    * schedules the next update of the playlist (for lives sources) and the next
@@ -914,15 +787,14 @@ gst_hls_demux_update_thread (GstHLSDemux * demux)
    * download time with the next scheduled update to check if we can or should
    * switch to a different bitrate */
 
-  g_mutex_lock (demux->thread_lock);
-  GST_DEBUG_OBJECT (demux, "Started updates thread");
-  while (TRUE) {
   /* block until the next scheduled update or the signal to quit this thread */
-    if (g_cond_timed_wait (demux->thread_cond, demux->thread_lock,
+  g_mutex_lock (demux->updates_timed_lock);
-            &demux->next_update)) {
+  GST_DEBUG_OBJECT (demux, "Started updates task");
+  while (TRUE) {
+    if (g_cond_timed_wait (GST_TASK_GET_COND (demux->updates_task),
+            demux->updates_timed_lock, &demux->next_update)) {
       goto quit;
     }
-
     /* update the playlist for live sources */
     if (gst_m3u8_client_is_live (demux->client)) {
       if (!gst_hls_demux_update_playlist (demux)) {
@@ -955,7 +827,7 @@ gst_hls_demux_update_thread (GstHLSDemux * demux)
 
     /* fetch the next fragment */
     if (g_queue_is_empty (demux->queue)) {
-      if (!gst_hls_demux_get_next_fragment (demux)) {
+      if (!gst_hls_demux_get_next_fragment (demux, FALSE)) {
         if (!demux->end_of_playlist && !demux->cancelled) {
           demux->client->update_failed_count++;
           if (demux->client->update_failed_count < DEFAULT_FAILED_COUNT) {
@@ -978,41 +850,12 @@ gst_hls_demux_update_thread (GstHLSDemux * demux)
 
 quit:
   {
-    GST_DEBUG_OBJECT (demux, "Stopped updates thread");
+    GST_DEBUG_OBJECT (demux, "Stopped updates task");
-    demux->updates_thread = NULL;
+    gst_hls_demux_stop (demux);
-    g_mutex_unlock (demux->thread_lock);
+    g_mutex_unlock (demux->updates_timed_lock);
-    return TRUE;
   }
 }
 
-
-static void
-gst_hls_demux_stop_update (GstHLSDemux * demux)
-{
-  GST_DEBUG_OBJECT (demux, "Stopping updates thread");
-  while (demux->updates_thread) {
-    g_mutex_lock (demux->thread_lock);
-    g_cond_signal (demux->thread_cond);
-    g_mutex_unlock (demux->thread_lock);
-  }
-}
-
-static gboolean
-gst_hls_demux_start_update (GstHLSDemux * demux)
-{
-  GError *error;
-
-  /* creates a new thread for the updates */
-  g_mutex_lock (demux->thread_lock);
-  if (demux->updates_thread == NULL) {
-    GST_DEBUG_OBJECT (demux, "Starting updates thread");
-    demux->updates_thread = g_thread_create (
-        (GThreadFunc) gst_hls_demux_update_thread, demux, FALSE, &error);
-  }
-  g_mutex_unlock (demux->thread_lock);
-  return (error != NULL);
-}
-
 static gboolean
 gst_hls_demux_cache_fragments (GstHLSDemux * demux)
 {
@@ -1065,7 +908,7 @@ gst_hls_demux_cache_fragments (GstHLSDemux * demux)
     g_time_val_add (&demux->next_update,
         gst_m3u8_client_get_target_duration (demux->client)
         / GST_SECOND * G_USEC_PER_SEC);
-    if (!gst_hls_demux_get_next_fragment (demux)) {
+    if (!gst_hls_demux_get_next_fragment (demux, TRUE)) {
       if (demux->end_of_playlist)
         break;
       if (!demux->cancelled)
@@ -1084,98 +927,58 @@ gst_hls_demux_cache_fragments (GstHLSDemux * demux)
 
   demux->need_cache = FALSE;
   return TRUE;
-}
 
-static gboolean
-gst_hls_demux_fetch_location (GstHLSDemux * demux, const gchar * uri)
-{
-  GstStateChangeReturn ret;
-  gboolean bret = FALSE;
-
-  g_mutex_lock (demux->fetcher_lock);
-
-  while (demux->fetcher)
-    g_cond_wait (demux->fetcher_cond, demux->fetcher_lock);
-
-  if (demux->cancelled)
-    goto quit;
-
-  if (!gst_hls_demux_make_fetcher_locked (demux, uri)) {
-    goto uri_error;
-  }
-
-  ret = gst_element_set_state (demux->fetcher, GST_STATE_PLAYING);
-  if (ret == GST_STATE_CHANGE_FAILURE)
-    goto state_change_error;
-
-  /* wait until we have fetched the uri */
-  GST_DEBUG_OBJECT (demux, "Waiting to fetch the URI");
-  g_cond_wait (demux->fetcher_cond, demux->fetcher_lock);
-
-  gst_hls_demux_stop_fetcher_locked (demux, FALSE);
-
-  if (!demux->fetcher_error && gst_adapter_available (demux->download)) {
-    GST_INFO_OBJECT (demux, "URI fetched successfully");
-    bret = TRUE;
-  }
-  goto quit;
-
-uri_error:
-  {
-    GST_ELEMENT_ERROR (demux, RESOURCE, OPEN_READ,
-        ("Could not create an element to fetch the given URI."), ("URI: \"%s\"",
-            uri));
-    bret = FALSE;
-    goto quit;
-  }
-
-state_change_error:
-  {
-    GST_ELEMENT_ERROR (demux, CORE, STATE_CHANGE,
-        ("Error changing state of the fetcher element."), (NULL));
-    bret = FALSE;
-    goto quit;
-  }
-
-quit:
-  {
-    /* Unlock any other fetcher that might be waiting */
-    g_cond_broadcast (demux->fetcher_cond);
-    g_mutex_unlock (demux->fetcher_lock);
-    return bret;
-  }
 }
 
 static gchar *
-gst_hls_src_buf_to_utf8_playlist (gchar * data, guint size)
+gst_hls_src_buf_to_utf8_playlist (GstBuffer * buf)
 {
+  gint size;
+  gchar *data;
   gchar *playlist;
 
+  data = (gchar *) GST_BUFFER_DATA (buf);
+  size = GST_BUFFER_SIZE (buf);
+
   if (!g_utf8_validate (data, size, NULL))
     return NULL;
 
   /* alloc size + 1 to end with a null character */
   playlist = g_malloc0 (size + 1);
   memcpy (playlist, data, size + 1);
+
+  gst_buffer_unref (buf);
   return playlist;
 }
 
 static gboolean
 gst_hls_demux_update_playlist (GstHLSDemux * demux)
 {
-  const guint8 *data;
+  GstFragment *download;
+  GstBufferListIterator *it;
+  GstBuffer *buf;
   gchar *playlist;
-  guint avail;
+
   const gchar *uri = gst_m3u8_client_get_current_uri (demux->client);
 
-  GST_INFO_OBJECT (demux, "Updating the playlist %s", uri);
+  download = gst_uri_downloader_fetch_uri (demux->downloader, uri);
-  if (!gst_hls_demux_fetch_location (demux, uri))
+
+  if (download == NULL)
     return FALSE;
 
-  avail = gst_adapter_available (demux->download);
+  /* Merge all the buffers in the list to build a unique buffer with the
-  data = gst_adapter_peek (demux->download, avail);
+   * playlist */
-  playlist = gst_hls_src_buf_to_utf8_playlist ((gchar *) data, avail);
+  it = gst_buffer_list_iterate (gst_fragment_get_buffer_list (download));
-  gst_adapter_clear (demux->download);
+
+  /* skip the first group, which contains the headers, which are not set in the
+   * demuxer*/
+  gst_buffer_list_iterator_next_group (it);
+  buf = gst_buffer_list_iterator_merge_group (it);
+
+  playlist = gst_hls_src_buf_to_utf8_playlist (buf);
+  gst_buffer_list_iterator_free (it);
+  g_object_unref (download);
+
   if (playlist == NULL) {
     GST_WARNING_OBJECT (demux, "Couldn't not validate playlist encoding");
     return FALSE;
@@ -1303,37 +1106,34 @@ gst_hls_demux_switch_playlist (GstHLSDemux * demux)
 }
 
 static gboolean
-gst_hls_demux_get_next_fragment (GstHLSDemux * demux)
+gst_hls_demux_get_next_fragment (GstHLSDemux * demux, gboolean caching)
 {
-  GstBuffer *buf;
+  GstFragment *download;
-  guint avail;
   const gchar *next_fragment_uri;
   GstClockTime duration;
   GstClockTime timestamp;
+  GstBufferList *buffer_list;
+  GstBuffer *buf;
   gboolean discont;
 
   if (!gst_m3u8_client_get_next_fragment (demux->client, &discont,
           &next_fragment_uri, &duration, &timestamp)) {
     GST_INFO_OBJECT (demux, "This playlist doesn't contain more fragments");
     demux->end_of_playlist = TRUE;
-    gst_task_start (demux->task);
+    gst_task_start (demux->stream_task);
     return FALSE;
   }
 
   GST_INFO_OBJECT (demux, "Fetching next fragment %s", next_fragment_uri);
 
-  if (!gst_hls_demux_fetch_location (demux, next_fragment_uri)) {
+  download = gst_uri_downloader_fetch_uri (demux->downloader,
-    /* FIXME: The gst_m3u8_get_next_fragment increments the sequence number
+      next_fragment_uri);
-       but another thread might call get_next_fragment and this decrement
-       will not redownload the failed fragment, but might duplicate the
-       download of a succeeded fragment
-     */
-    g_atomic_int_add (&demux->client->sequence, -1);
-    return FALSE;
-  }
 
-  avail = gst_adapter_available (demux->download);
+  if (download == NULL)
-  buf = gst_adapter_take_buffer (demux->download, avail);
+    goto error;
+
+  buffer_list = gst_fragment_get_buffer_list (download);
+  buf = gst_buffer_list_get (buffer_list, 0, 0);
   GST_BUFFER_DURATION (buf) = duration;
   GST_BUFFER_TIMESTAMP (buf) = timestamp;
 
@@ -1357,8 +1157,17 @@ gst_hls_demux_get_next_fragment (GstHLSDemux * demux)
     GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
   }
 
-  g_queue_push_tail (demux->queue, buf);
+  g_queue_push_tail (demux->queue, buffer_list);
-  gst_task_start (demux->task);
+  g_object_unref (download);
-  gst_adapter_clear (demux->download);
+  if (!caching) {
+    GST_TASK_SIGNAL (demux->updates_task);
+  }
+
   return TRUE;
+
+error:
+  {
+    gst_hls_demux_stop (demux);
+    return FALSE;
+  }
 }

gst/hls/gsthlsdemux.h

@@ -27,6 +27,8 @@
 #include <gst/gst.h>
 #include <gst/base/gstadapter.h>
 #include "m3u8.h"
+#include "gstfragmented.h"
+#include "gsturidownloader.h"
 
 G_BEGIN_DECLS
 #define GST_TYPE_HLS_DEMUX \
@@ -51,12 +53,12 @@ struct _GstHLSDemux
 {
   GstElement parent;
 
-  GstTask *task;
-  GStaticRecMutex task_lock;
   GstPad *srcpad;
   GstPad *sinkpad;
+
   GstBuffer *playlist;
   GstCaps *input_caps;
+  GstUriDownloader *downloader;
   GstM3U8Client *client;        /* M3U8 client */
   GQueue *queue;                /* Queue storing the fetched fragments */
   gboolean need_cache;          /* Wheter we need to cache some fragments before starting to push data */
@@ -67,25 +69,18 @@ struct _GstHLSDemux
   guint fragments_cache;        /* number of fragments needed to be cached to start playing */
   gfloat bitrate_switch_tol;    /* tolerance with respect to the fragment duration to switch the bitarate*/
 
-  /* Updates thread */
+  /* Streaming task */
-  GThread *updates_thread;      /* Thread handling the playlist and fragments updates */
+  GstTask *stream_task;
-  GMutex *thread_lock;          /* Thread lock */
+  GStaticRecMutex stream_lock;
-  GCond *thread_cond;           /* Signals the thread to quit */
+  gboolean stop_stream_task;
-  gboolean thread_return;       /* Instructs the thread to return after the thread_quit condition is meet */
+
+  /* Updates task */
+  GstTask *updates_task;
+  GStaticRecMutex updates_lock;
+  GMutex *updates_timed_lock;
   GTimeVal next_update;         /* Time of the next update */
   gint64 accumulated_delay;     /* Delay accumulated fetching fragments, used to decide a playlist switch */
-
-  /* Fragments fetcher */
-  GstElement *fetcher;
-  GstBus *fetcher_bus;
-  GstPad *fetcherpad;
-  GMutex *fetcher_lock;
-  GCond *fetcher_cond;
-  GTimeVal *timeout;
-  gboolean fetcher_error;
-  gboolean stopping_fetcher;
   gboolean cancelled;
-  GstAdapter *download;
 
   /* Position in the stream */
   GstClockTime position;

gst/hls/gsturidownloader.c

@@ -0,0 +1,347 @@
+/* GStreamer
+ * Copyright (C) 2011 Andoni Morales Alastruey <ylatuya@gmail.com>
+ *
+ * gstfragment.c:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <glib.h>
+#include "gstfragmented.h"
+#include "gstfragment.h"
+#include "gsturidownloader.h"
+
+GST_DEBUG_CATEGORY_STATIC (uridownloader_debug);
+#define GST_CAT_DEFAULT (uridownloader_debug)
+
+#define GST_URI_DOWNLOADER_GET_PRIVATE(obj)  \
+   (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
+    GST_TYPE_URI_DOWNLOADER, GstUriDownloaderPrivate))
+
+struct _GstUriDownloaderPrivate
+{
+  /* Fragments fetcher */
+  GstElement *urisrc;
+  GstBus *bus;
+  GstPad *pad;
+  GTimeVal *timeout;
+  GstFragment *download;
+  GMutex *lock;
+  GCond *cond;
+};
+
+static void gst_uri_downloader_finalize (GObject * object);
+static void gst_uri_downloader_dispose (GObject * object);
+
+static GstFlowReturn gst_uri_downloader_chain (GstPad * pad, GstBuffer * buf);
+static gboolean gst_uri_downloader_sink_event (GstPad * pad, GstEvent * event);
+static GstBusSyncReply gst_uri_downloader_bus_handler (GstBus * bus,
+    GstMessage * message, gpointer data);
+
+static GstStaticPadTemplate sinkpadtemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS_ANY);
+
+#define _do_init \
+{ \
+  GST_DEBUG_CATEGORY_INIT (uridownloader_debug, "uridownloader", 0, "URI downloader"); \
+}
+
+G_DEFINE_TYPE_WITH_CODE (GstUriDownloader, gst_uri_downloader, GST_TYPE_OBJECT,
+    _do_init);
+
+static void
+gst_uri_downloader_class_init (GstUriDownloaderClass * klass)
+{
+  GObjectClass *gobject_class;
+
+  gobject_class = (GObjectClass *) klass;
+
+  g_type_class_add_private (klass, sizeof (GstUriDownloaderPrivate));
+
+  gobject_class->dispose = gst_uri_downloader_dispose;
+  gobject_class->finalize = gst_uri_downloader_finalize;
+}
+
+static void
+gst_uri_downloader_init (GstUriDownloader * downloader)
+{
+  downloader->priv = GST_URI_DOWNLOADER_GET_PRIVATE (downloader);
+
+  /* Initialize the sink pad. This pad will be connected to the src pad of the
+   * element created with gst_element_make_from_uri and will handle the download */
+  downloader->priv->pad =
+      gst_pad_new_from_static_template (&sinkpadtemplate, "sink");
+  gst_pad_set_chain_function (downloader->priv->pad,
+      GST_DEBUG_FUNCPTR (gst_uri_downloader_chain));
+  gst_pad_set_event_function (downloader->priv->pad,
+      GST_DEBUG_FUNCPTR (gst_uri_downloader_sink_event));
+  gst_pad_set_element_private (downloader->priv->pad, downloader);
+  gst_pad_activate_push (downloader->priv->pad, TRUE);
+
+  /* Create a bus to handle error and warning message from the source element */
+  downloader->priv->bus = gst_bus_new ();
+
+  downloader->priv->lock = g_mutex_new ();
+  downloader->priv->cond = g_cond_new ();
+}
+
+static void
+gst_uri_downloader_dispose (GObject * object)
+{
+  GstUriDownloader *downloader = GST_URI_DOWNLOADER (object);
+
+  if (downloader->priv->urisrc != NULL) {
+    gst_object_unref (downloader->priv->urisrc);
+    downloader->priv->urisrc = NULL;
+  }
+
+  if (downloader->priv->bus != NULL) {
+    gst_object_unref (downloader->priv->bus);
+    downloader->priv->bus = NULL;
+  }
+
+  if (downloader->priv->pad) {
+    gst_object_unref (downloader->priv->pad);
+    downloader->priv->pad = NULL;
+  }
+
+  if (downloader->priv->download) {
+    g_object_unref (downloader->priv->download);
+    downloader->priv->download = NULL;
+  }
+
+  G_OBJECT_CLASS (gst_uri_downloader_parent_class)->dispose (object);
+}
+
+static void
+gst_uri_downloader_finalize (GObject * object)
+{
+  GstUriDownloader *downloader = GST_URI_DOWNLOADER (object);
+
+  g_mutex_free (downloader->priv->lock);
+  g_cond_free (downloader->priv->cond);
+
+  G_OBJECT_CLASS (gst_uri_downloader_parent_class)->finalize (object);
+}
+
+GstUriDownloader *
+gst_uri_downloader_new (void)
+{
+  return g_object_new (GST_TYPE_URI_DOWNLOADER, NULL);
+}
+
+static gboolean
+gst_uri_downloader_sink_event (GstPad * pad, GstEvent * event)
+{
+  GstUriDownloader *downloader =
+      (GstUriDownloader *) (gst_pad_get_element_private (pad));
+
+  switch (event->type) {
+    case GST_EVENT_EOS:{
+      GST_OBJECT_LOCK (downloader);
+      GST_DEBUG_OBJECT (downloader, "Got EOS on the fetcher pad");
+      if (downloader->priv->download != NULL) {
+        /* signal we have fetched the URI */
+        downloader->priv->download->completed = TRUE;
+        downloader->priv->download->download_stop_time = g_get_real_time ();
+        GST_OBJECT_UNLOCK (downloader);
+        GST_DEBUG_OBJECT (downloader, "Signaling chain funtion");
+        g_cond_signal (downloader->priv->cond);
+
+      } else {
+        GST_OBJECT_UNLOCK (downloader);
+      }
+      break;
+    }
+    default:
+      break;
+  }
+
+  gst_event_unref (event);
+  return FALSE;
+}
+
+static GstBusSyncReply
+gst_uri_downloader_bus_handler (GstBus * bus,
+    GstMessage * message, gpointer data)
+{
+  GstUriDownloader *downloader = (GstUriDownloader *) (data);
+
+  if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ERROR ||
+      GST_MESSAGE_TYPE (message) == GST_MESSAGE_WARNING) {
+    GError *err = NULL;
+    gchar *dbg_info = NULL;
+
+    gst_message_parse_error (message, &err, &dbg_info);
+    GST_WARNING_OBJECT (downloader,
+        "Received error: %s from %s, the download will be cancelled",
+        GST_OBJECT_NAME (message->src), err->message);
+    GST_DEBUG ("Debugging info: %s\n", (dbg_info) ? dbg_info : "none");
+    g_error_free (err);
+    g_free (dbg_info);
+
+    /* remove the sync handler to avoid duplicated messages */
+    gst_bus_set_sync_handler (downloader->priv->bus, NULL, NULL);
+    gst_uri_downloader_cancel (downloader);
+  }
+
+  gst_message_unref (message);
+  return GST_BUS_DROP;
+}
+
+static GstFlowReturn
+gst_uri_downloader_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstUriDownloader *downloader =
+      (GstUriDownloader *) gst_pad_get_element_private (pad);
+
+  /* HTML errors (404, 500, etc...) are also pushed through this pad as
+   * response but the source element will also post a warning or error message
+   * in the bus, which is handled synchronously cancelling the download.
+   */
+  GST_OBJECT_LOCK (downloader);
+  if (downloader->priv->download == NULL) {
+    /* Download cancelled, quit */
+    GST_OBJECT_UNLOCK (downloader);
+    goto done;
+  }
+
+  GST_LOG_OBJECT (downloader, "The uri fetcher received a new buffer "
+      "of size %u", GST_BUFFER_SIZE (buf));
+  if (!gst_fragment_add_buffer (downloader->priv->download, buf))
+    GST_WARNING_OBJECT (downloader, "Could not add buffer to fragment");
+  GST_OBJECT_UNLOCK (downloader);
+
+done:
+  {
+    return GST_FLOW_OK;
+  }
+}
+
+static void
+gst_uri_downloader_stop (GstUriDownloader * downloader)
+{
+  GstPad *pad;
+
+  GST_DEBUG_OBJECT (downloader, "Stopping source element");
+
+  /* remove the bus' sync handler */
+  gst_bus_set_sync_handler (downloader->priv->bus, NULL, NULL);
+  /* unlink the source element from the internal pad */
+  pad = gst_pad_get_peer (downloader->priv->pad);
+  if (pad) {
+    gst_pad_unlink (pad, downloader->priv->pad);
+    gst_object_unref (pad);
+  }
+  /* set the element state to NULL */
+  gst_element_set_state (downloader->priv->urisrc, GST_STATE_NULL);
+  gst_element_get_state (downloader->priv->urisrc, NULL, NULL,
+      GST_CLOCK_TIME_NONE);
+}
+
+void
+gst_uri_downloader_cancel (GstUriDownloader * downloader)
+{
+  GST_OBJECT_LOCK (downloader);
+  if (downloader->priv->download != NULL) {
+    GST_DEBUG_OBJECT (downloader, "Cancelling download");
+    g_object_unref (downloader->priv->download);
+    downloader->priv->download = NULL;
+    GST_OBJECT_UNLOCK (downloader);
+    GST_DEBUG_OBJECT (downloader, "Signaling chain funtion");
+    g_cond_signal (downloader->priv->cond);
+  } else {
+    GST_OBJECT_UNLOCK (downloader);
+    GST_DEBUG_OBJECT (downloader,
+        "Trying to cancell a download that was alredy cancelled");
+  }
+}
+
+static gboolean
+gst_uri_downloader_set_uri (GstUriDownloader * downloader, const gchar * uri)
+{
+  GstPad *pad;
+
+  if (!gst_uri_is_valid (uri))
+    return FALSE;
+
+  GST_DEBUG_OBJECT (downloader, "Creating source element for the URI:%s", uri);
+  downloader->priv->urisrc = gst_element_make_from_uri (GST_URI_SRC, uri, NULL);
+  if (!downloader->priv->urisrc)
+    return FALSE;
+
+  /* add a sync handler for the bus messages to detect errors in the download */
+  gst_element_set_bus (GST_ELEMENT (downloader->priv->urisrc),
+      downloader->priv->bus);
+  gst_bus_set_sync_handler (downloader->priv->bus,
+      gst_uri_downloader_bus_handler, downloader);
+
+  pad = gst_element_get_static_pad (downloader->priv->urisrc, "src");
+  if (!pad)
+    return FALSE;
+  gst_pad_link (pad, downloader->priv->pad);
+  gst_object_unref (pad);
+  return TRUE;
+}
+
+GstFragment *
+gst_uri_downloader_fetch_uri (GstUriDownloader * downloader, const gchar * uri)
+{
+  GstStateChangeReturn ret;
+  GstFragment *download = NULL;
+
+  g_mutex_lock (downloader->priv->lock);
+
+  if (!gst_uri_downloader_set_uri (downloader, uri)) {
+    goto quit;
+  }
+
+  downloader->priv->download = gst_fragment_new ();
+
+  ret = gst_element_set_state (downloader->priv->urisrc, GST_STATE_PLAYING);
+  if (ret == GST_STATE_CHANGE_FAILURE) {
+    g_object_unref (downloader->priv->download);
+    downloader->priv->download = NULL;
+    goto quit;
+  }
+
+  /* wait until:
+   *   - the download succeed (EOS in the src pad)
+   *   - the download failed (Error message on the fetcher bus)
+   *   - the download was canceled
+   */
+  GST_DEBUG_OBJECT (downloader, "Waiting to fetch the URI");
+  g_cond_wait (downloader->priv->cond, downloader->priv->lock);
+
+  GST_OBJECT_LOCK (downloader);
+  download = downloader->priv->download;
+  downloader->priv->download = NULL;
+  GST_OBJECT_UNLOCK (downloader);
+
+  if (download != NULL)
+    GST_INFO_OBJECT (downloader, "URI fetched successfully");
+  else
+    GST_INFO_OBJECT (downloader, "Error fetching URI");
+
+quit:
+  {
+    gst_uri_downloader_stop (downloader);
+    g_mutex_unlock (downloader->priv->lock);
+    return download;
+  }
+}

gst/hls/gsturidownloader.h

@@ -0,0 +1,64 @@
+/* GStreamer
+ * Copyright (C) 2011 Andoni Morales Alastruey <ylatuya@gmail.com>
+ *
+ * gsturidownloader.h:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * Youshould have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GSTURI_DOWNLOADER_H__
+#define __GSTURI_DOWNLOADER_H__
+
+#include <glib-object.h>
+#include <gst/gst.h>
+#include "gstfragment.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_URI_DOWNLOADER (gst_uri_downloader_get_type())
+#define GST_URI_DOWNLOADER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_URI_DOWNLOADER,GstUriDownloader))
+#define GST_URI_DOWNLOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_URI_DOWNLOADER,GstUriDownloaderClass))
+#define GST_IS_URI_DOWNLOADER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_URI_DOWNLOADER))
+#define GST_IS_URI_DOWNLOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_URI_DOWNLOADER))
+
+typedef struct _GstUriDownloader GstUriDownloader;
+typedef struct _GstUriDownloaderPrivate GstUriDownloaderPrivate;
+typedef struct _GstUriDownloaderClass GstUriDownloaderClass;
+
+struct _GstUriDownloader
+{
+  GstObject parent;
+
+  GstUriDownloaderPrivate *priv;
+};
+
+struct _GstUriDownloaderClass
+{
+  GstObjectClass parent_class;
+
+  /*< private >*/
+  gpointer _gst_reserved[GST_PADDING];
+};
+
+GType gst_uri_downloader_get_type (void);
+
+GstUriDownloader * gst_uri_downloader_new (void);
+GstFragment * gst_uri_downloader_fetch_uri (GstUriDownloader * downloader, const gchar * uri);
+void gst_uri_downloader_cancel (GstUriDownloader *downloader);
+void gst_uri_downloader_free (GstUriDownloader *downloader);
+
+G_END_DECLS
+#endif /* __GSTURIDOWNLOADER_H__ */