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Merge remote-tracking branch 'origin/0.10'

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This commit is contained in:
Thibault Saunier 2012-04-05 17:15:11 -04:00
commit 513aa08bee
7 changed files with 869 additions and 359 deletions
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4
gst/hls/Makefile.am
View file

@ -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)

222
gst/hls/gstfragment.c Normal file
View file

@ -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;
}

69
gst/hls/gstfragment.h Normal file
View file

@ -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__ */

493
gst/hls/gsthlsdemux.c
View file

@ -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,
GstBuffer * buf);
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_stream_loop (GstHLSDemux * demux);
static void gst_hls_demux_updates_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);
g_mutex_free (demux->fetcher_lock);
if (demux->stream_task) {
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);
g_mutex_free (demux->thread_lock);
if (demux->updates_task) {
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);
gst_object_unref (demux->task);
g_static_rec_mutex_free (&demux->task_lock);
gst_object_unref (demux->fetcher_bus);
gst_object_unref (demux->fetcherpad);
if (demux->downloader != NULL) {
g_object_unref (demux->downloader);
demux->downloader = NULL;
}
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 */
demux->fetcherpad =
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);
/* Downloader */
demux->downloader = gst_uri_downloader_new ();
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 */
demux->task = gst_task_create ((GstTaskFunction) gst_hls_demux_loop, demux);
gst_task_set_lock (demux->task, &demux->task_lock);
/* Updates task */
g_static_rec_mutex_init (&demux->updates_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);
g_mutex_lock (demux->fetcher_lock);
gst_hls_demux_stop_fetcher_locked (demux, TRUE);
g_mutex_unlock (demux->fetcher_lock);
gst_hls_demux_stop_update (demux);
gst_task_pause (demux->task);
gst_task_pause (demux->stream_task);
gst_uri_downloader_cancel (demux->downloader);
gst_task_stop (demux->updates_task);
gst_task_pause (demux->stream_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);
gst_buffer_unref (buf);
GstBufferList *buf_list = g_queue_pop_head (demux->queue);
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);
g_static_rec_mutex_unlock (&demux->task_lock);
gst_task_start (demux->stream_task);
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 *)
GST_BUFFER_DATA (demux->playlist), GST_BUFFER_SIZE (demux->playlist));
gst_buffer_unref (demux->playlist);
playlist = gst_hls_src_buf_to_utf8_playlist (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_hls_demux_stop_fetcher_locked (demux, TRUE);
g_mutex_unlock (demux->fetcher_lock);
gst_task_stop (demux->task);
gst_hls_demux_stop_update (demux);
gst_uri_downloader_cancel (demux->downloader);
if (GST_TASK_STATE (demux->updates_task) != GST_TASK_STOPPED) {
demux->stop_stream_task = TRUE;
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);
gst_buffer_unref (buf);
GstBufferList *buffer_list = g_queue_pop_head (demux->queue);
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
gst_hls_demux_update_thread (GstHLSDemux * demux)
void
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,
&demux->next_update)) {
g_mutex_lock (demux->updates_timed_lock);
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");
demux->updates_thread = NULL;
g_mutex_unlock (demux->thread_lock);
return TRUE;
GST_DEBUG_OBJECT (demux, "Stopped updates task");
gst_hls_demux_stop (demux);
g_mutex_unlock (demux->updates_timed_lock);
}
}
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);
if (!gst_hls_demux_fetch_location (demux, uri))
download = gst_uri_downloader_fetch_uri (demux->downloader, uri);
if (download == NULL)
return FALSE;
avail = gst_adapter_available (demux->download);
data = gst_adapter_peek (demux->download, avail);
playlist = gst_hls_src_buf_to_utf8_playlist ((gchar *) data, avail);
gst_adapter_clear (demux->download);
/* Merge all the buffers in the list to build a unique buffer with the
* playlist */
it = gst_buffer_list_iterate (gst_fragment_get_buffer_list (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;
guint avail;
GstFragment *download;
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)) {
/* FIXME: The gst_m3u8_get_next_fragment increments the sequence number
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;
}
download = gst_uri_downloader_fetch_uri (demux->downloader,
next_fragment_uri);
avail = gst_adapter_available (demux->download);
buf = gst_adapter_take_buffer (demux->download, avail);
if (download == NULL)
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);
gst_task_start (demux->task);
gst_adapter_clear (demux->download);
return TRUE;
g_queue_push_tail (demux->queue, buffer_list);
g_object_unref (download);
if (!caching) {
GST_TASK_SIGNAL (demux->updates_task);
}
return TRUE;
error:
{
gst_hls_demux_stop (demux);
return FALSE;
}
}

31
gst/hls/gsthlsdemux.h
View file

@ -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 */
GThread *updates_thread; /* Thread handling the playlist and fragments updates */
GMutex *thread_lock; /* Thread lock */
GCond *thread_cond; /* Signals the thread to quit */
gboolean thread_return; /* Instructs the thread to return after the thread_quit condition is meet */
/* Streaming task */
GstTask *stream_task;
GStaticRecMutex stream_lock;
gboolean stop_stream_task;
/* 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;

347
gst/hls/gsturidownloader.c Normal file
View file

@ -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;
}
}

64
gst/hls/gsturidownloader.h Normal file
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@ -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__ */