mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
b99ecc78ca
GLib guarantees libintl is always present, using proxy-libintl as last resort. There is no need to mock gettex API any more. This fix static build on Windows because G_INTL_STATIC_COMPILATION must be defined before including libintl.h, and glib does it for us as part as including glib.h. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2028>
740 lines
24 KiB
C
740 lines
24 KiB
C
/* GStreamer
|
|
* Copyright (C) 2012 Smart TV Alliance
|
|
* Author: Thiago Sousa Santos <thiago.sousa.santos@collabora.com>, Collabora Ltd.
|
|
*
|
|
* gstmssdemux.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.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:element-mssdemux
|
|
* @title: mssdemux
|
|
*
|
|
* Demuxes a Microsoft's Smooth Streaming manifest into its audio and/or video streams.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* == Internals
|
|
*
|
|
* = Smooth streaming in a few lines
|
|
* A SS stream is defined by a xml manifest file. This file has a list of
|
|
* tracks (StreamIndex), each one can have multiple QualityLevels, that define
|
|
* different encoding/bitrates. When playing a track, only one of those
|
|
* QualityLevels can be active at a time (per stream).
|
|
*
|
|
* The StreamIndex defines a URL with {time} and {bitrate} tags that are
|
|
* replaced by values indicated by the fragment start times and the selected
|
|
* QualityLevel, that generates the fragments URLs.
|
|
*
|
|
* Another relevant detail is that the Isomedia fragments for smoothstreaming
|
|
* won't contains a 'moov' atom, nor a 'stsd', so there is no information
|
|
* about the media type/configuration on the fragments, it must be extracted
|
|
* from the Manifest and passed downstream. mssdemux does this via GstCaps.
|
|
*
|
|
* = How mssdemux works
|
|
* There is a gstmssmanifest.c utility that holds the manifest and parses
|
|
* and has functions to extract information from it. mssdemux received the
|
|
* manifest from its sink pad and starts processing it when it gets EOS.
|
|
*
|
|
* The Manifest is parsed and the streams are exposed, 1 pad for each, with
|
|
* a initially selected QualityLevel. Each stream starts its own GstTaks that
|
|
* is responsible for downloading fragments and pushing them downstream.
|
|
*
|
|
* When a new connection-speed is set, mssdemux evaluates the available
|
|
* QualityLevels and might decide to switch to another one. In this case it
|
|
* pushes a new GstCaps event indicating the new caps on the pads.
|
|
*
|
|
* All operations that intend to update the GstTasks state should be protected
|
|
* with the GST_OBJECT_LOCK.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <glib/gi18n-lib.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "gstmssdemux.h"
|
|
|
|
GST_DEBUG_CATEGORY (mssdemux_debug);
|
|
|
|
#define DEFAULT_MAX_QUEUE_SIZE_BUFFERS 0
|
|
#define DEFAULT_BITRATE_LIMIT 0.8
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
|
|
PROP_MAX_QUEUE_SIZE_BUFFERS,
|
|
PROP_LAST
|
|
};
|
|
|
|
static GstStaticPadTemplate gst_mss_demux_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("application/vnd.ms-sstr+xml")
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_mss_demux_videosrc_template =
|
|
GST_STATIC_PAD_TEMPLATE ("video_%02u",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
static GstStaticPadTemplate gst_mss_demux_audiosrc_template =
|
|
GST_STATIC_PAD_TEMPLATE ("audio_%02u",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
#define gst_mss_demux_parent_class parent_class
|
|
G_DEFINE_TYPE (GstMssDemux, gst_mss_demux, GST_TYPE_ADAPTIVE_DEMUX);
|
|
GST_ELEMENT_REGISTER_DEFINE (mssdemux, "mssdemux",
|
|
GST_RANK_PRIMARY, GST_TYPE_MSS_DEMUX);
|
|
static void gst_mss_demux_dispose (GObject * object);
|
|
static void gst_mss_demux_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_mss_demux_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static gboolean gst_mss_demux_is_live (GstAdaptiveDemux * demux);
|
|
static gboolean gst_mss_demux_process_manifest (GstAdaptiveDemux * demux,
|
|
GstBuffer * buffer);
|
|
static GstClockTime gst_mss_demux_get_duration (GstAdaptiveDemux * demux);
|
|
static void gst_mss_demux_reset (GstAdaptiveDemux * demux);
|
|
static GstFlowReturn gst_mss_demux_stream_seek (GstAdaptiveDemuxStream * stream,
|
|
gboolean forward, GstSeekFlags flags, GstClockTime ts,
|
|
GstClockTime * final_ts);
|
|
static gboolean gst_mss_demux_stream_has_next_fragment (GstAdaptiveDemuxStream *
|
|
stream);
|
|
static GstFlowReturn
|
|
gst_mss_demux_stream_advance_fragment (GstAdaptiveDemuxStream * stream);
|
|
static gboolean gst_mss_demux_stream_select_bitrate (GstAdaptiveDemuxStream *
|
|
stream, guint64 bitrate);
|
|
static GstFlowReturn
|
|
gst_mss_demux_stream_update_fragment_info (GstAdaptiveDemuxStream * stream);
|
|
static gboolean gst_mss_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek);
|
|
static gint64
|
|
gst_mss_demux_get_manifest_update_interval (GstAdaptiveDemux * demux);
|
|
static gint64
|
|
gst_mss_demux_stream_get_fragment_waiting_time (GstAdaptiveDemuxStream *
|
|
stream);
|
|
static GstFlowReturn
|
|
gst_mss_demux_update_manifest_data (GstAdaptiveDemux * demux,
|
|
GstBuffer * buffer);
|
|
static gboolean gst_mss_demux_get_live_seek_range (GstAdaptiveDemux * demux,
|
|
gint64 * start, gint64 * stop);
|
|
static GstFlowReturn gst_mss_demux_data_received (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemuxStream * stream, GstBuffer * buffer);
|
|
static gboolean
|
|
gst_mss_demux_requires_periodical_playlist_update (GstAdaptiveDemux * demux);
|
|
|
|
static void
|
|
gst_mss_demux_class_init (GstMssDemuxClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
GstAdaptiveDemuxClass *gstadaptivedemux_class;
|
|
|
|
gobject_class = (GObjectClass *) klass;
|
|
gstelement_class = (GstElementClass *) klass;
|
|
gstadaptivedemux_class = (GstAdaptiveDemuxClass *) klass;
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_mss_demux_sink_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_mss_demux_videosrc_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_mss_demux_audiosrc_template);
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"Smooth Streaming demuxer", "Codec/Demuxer/Adaptive",
|
|
"Parse and demultiplex a Smooth Streaming manifest into audio and video "
|
|
"streams", "Thiago Santos <thiago.sousa.santos@collabora.com>");
|
|
|
|
gobject_class->dispose = gst_mss_demux_dispose;
|
|
gobject_class->set_property = gst_mss_demux_set_property;
|
|
gobject_class->get_property = gst_mss_demux_get_property;
|
|
|
|
#ifndef GST_REMOVE_DEPRECATED
|
|
g_object_class_install_property (gobject_class, PROP_MAX_QUEUE_SIZE_BUFFERS,
|
|
g_param_spec_uint ("max-queue-size-buffers", "Max queue size in buffers",
|
|
"Maximum buffers that can be stored in each internal stream queue "
|
|
"(0 = infinite) (deprecated)", 0, G_MAXUINT,
|
|
DEFAULT_MAX_QUEUE_SIZE_BUFFERS,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_DEPRECATED));
|
|
#endif
|
|
|
|
gstadaptivedemux_class->process_manifest = gst_mss_demux_process_manifest;
|
|
gstadaptivedemux_class->is_live = gst_mss_demux_is_live;
|
|
gstadaptivedemux_class->get_duration = gst_mss_demux_get_duration;
|
|
gstadaptivedemux_class->get_manifest_update_interval =
|
|
gst_mss_demux_get_manifest_update_interval;
|
|
gstadaptivedemux_class->reset = gst_mss_demux_reset;
|
|
gstadaptivedemux_class->seek = gst_mss_demux_seek;
|
|
gstadaptivedemux_class->stream_seek = gst_mss_demux_stream_seek;
|
|
gstadaptivedemux_class->stream_advance_fragment =
|
|
gst_mss_demux_stream_advance_fragment;
|
|
gstadaptivedemux_class->stream_has_next_fragment =
|
|
gst_mss_demux_stream_has_next_fragment;
|
|
gstadaptivedemux_class->stream_select_bitrate =
|
|
gst_mss_demux_stream_select_bitrate;
|
|
gstadaptivedemux_class->stream_update_fragment_info =
|
|
gst_mss_demux_stream_update_fragment_info;
|
|
gstadaptivedemux_class->stream_get_fragment_waiting_time =
|
|
gst_mss_demux_stream_get_fragment_waiting_time;
|
|
gstadaptivedemux_class->update_manifest_data =
|
|
gst_mss_demux_update_manifest_data;
|
|
gstadaptivedemux_class->get_live_seek_range =
|
|
gst_mss_demux_get_live_seek_range;
|
|
gstadaptivedemux_class->data_received = gst_mss_demux_data_received;
|
|
gstadaptivedemux_class->requires_periodical_playlist_update =
|
|
gst_mss_demux_requires_periodical_playlist_update;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (mssdemux_debug, "mssdemux", 0, "mssdemux plugin");
|
|
}
|
|
|
|
static void
|
|
gst_mss_demux_init (GstMssDemux * mssdemux)
|
|
{
|
|
mssdemux->data_queue_max_size = DEFAULT_MAX_QUEUE_SIZE_BUFFERS;
|
|
|
|
gst_adaptive_demux_set_stream_struct_size (GST_ADAPTIVE_DEMUX_CAST (mssdemux),
|
|
sizeof (GstMssDemuxStream));
|
|
}
|
|
|
|
static void
|
|
gst_mss_demux_reset (GstAdaptiveDemux * demux)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
|
|
if (mssdemux->manifest) {
|
|
gst_mss_manifest_free (mssdemux->manifest);
|
|
mssdemux->manifest = NULL;
|
|
}
|
|
g_free (mssdemux->base_url);
|
|
mssdemux->base_url = NULL;
|
|
|
|
mssdemux->n_videos = mssdemux->n_audios = 0;
|
|
|
|
}
|
|
|
|
static void
|
|
gst_mss_demux_dispose (GObject * object)
|
|
{
|
|
gst_mss_demux_reset (GST_ADAPTIVE_DEMUX_CAST (object));
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_mss_demux_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_MAX_QUEUE_SIZE_BUFFERS:
|
|
mssdemux->data_queue_max_size = g_value_get_uint (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_mss_demux_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_MAX_QUEUE_SIZE_BUFFERS:
|
|
g_value_set_uint (value, mssdemux->data_queue_max_size);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mss_demux_is_live (GstAdaptiveDemux * demux)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
|
|
g_return_val_if_fail (mssdemux->manifest != NULL, FALSE);
|
|
|
|
return gst_mss_manifest_is_live (mssdemux->manifest);
|
|
}
|
|
|
|
static GstClockTime
|
|
gst_mss_demux_get_duration (GstAdaptiveDemux * demux)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
|
|
g_return_val_if_fail (mssdemux->manifest != NULL, FALSE);
|
|
|
|
return gst_mss_manifest_get_gst_duration (mssdemux->manifest);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mss_demux_stream_update_fragment_info (GstAdaptiveDemuxStream * stream)
|
|
{
|
|
GstMssDemuxStream *mssstream = (GstMssDemuxStream *) stream;
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (stream->demux);
|
|
GstFlowReturn ret;
|
|
gchar *path = NULL;
|
|
|
|
gst_adaptive_demux_stream_fragment_clear (&stream->fragment);
|
|
ret = gst_mss_stream_get_fragment_url (mssstream->manifest_stream, &path);
|
|
|
|
if (ret == GST_FLOW_OK) {
|
|
stream->fragment.uri = g_strdup_printf ("%s/%s", mssdemux->base_url, path);
|
|
stream->fragment.timestamp =
|
|
gst_mss_stream_get_fragment_gst_timestamp (mssstream->manifest_stream);
|
|
stream->fragment.duration =
|
|
gst_mss_stream_get_fragment_gst_duration (mssstream->manifest_stream);
|
|
}
|
|
g_free (path);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mss_demux_stream_seek (GstAdaptiveDemuxStream * stream, gboolean forward,
|
|
GstSeekFlags flags, GstClockTime ts, GstClockTime * final_ts)
|
|
{
|
|
GstMssDemuxStream *mssstream = (GstMssDemuxStream *) stream;
|
|
|
|
gst_mss_stream_seek (mssstream->manifest_stream, forward, flags, ts,
|
|
final_ts);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mss_demux_stream_advance_fragment (GstAdaptiveDemuxStream * stream)
|
|
{
|
|
GstMssDemuxStream *mssstream = (GstMssDemuxStream *) stream;
|
|
|
|
if (stream->demux->segment.rate >= 0)
|
|
return gst_mss_stream_advance_fragment (mssstream->manifest_stream);
|
|
else
|
|
return gst_mss_stream_regress_fragment (mssstream->manifest_stream);
|
|
}
|
|
|
|
static GstCaps *
|
|
create_mss_caps (GstMssDemuxStream * stream, GstCaps * caps)
|
|
{
|
|
return gst_caps_new_simple ("video/quicktime", "variant", G_TYPE_STRING,
|
|
"mss-fragmented", "timescale", G_TYPE_UINT64,
|
|
gst_mss_stream_get_timescale (stream->manifest_stream), "media-caps",
|
|
GST_TYPE_CAPS, caps, NULL);
|
|
}
|
|
|
|
static GstPad *
|
|
_create_pad (GstMssDemux * mssdemux, GstMssStream * manifeststream)
|
|
{
|
|
gchar *name = NULL;
|
|
GstPad *srcpad = NULL;
|
|
GstMssStreamType streamtype;
|
|
GstPadTemplate *tmpl = NULL;
|
|
GstCaps *caps = NULL;
|
|
|
|
caps = gst_mss_stream_get_caps (manifeststream);
|
|
|
|
if (!caps) {
|
|
GST_WARNING_OBJECT (mssdemux, "not creating pad for unrecognized stream");
|
|
return NULL;
|
|
}
|
|
|
|
streamtype = gst_mss_stream_get_type (manifeststream);
|
|
GST_DEBUG_OBJECT (mssdemux, "Found stream of type: %s",
|
|
gst_mss_stream_type_name (streamtype));
|
|
|
|
/* TODO use stream's name/bitrate/index as the pad name? */
|
|
if (streamtype == MSS_STREAM_TYPE_VIDEO) {
|
|
name = g_strdup_printf ("video_%02u", mssdemux->n_videos++);
|
|
tmpl = gst_static_pad_template_get (&gst_mss_demux_videosrc_template);
|
|
} else if (streamtype == MSS_STREAM_TYPE_AUDIO) {
|
|
name = g_strdup_printf ("audio_%02u", mssdemux->n_audios++);
|
|
tmpl = gst_static_pad_template_get (&gst_mss_demux_audiosrc_template);
|
|
}
|
|
|
|
if (tmpl != NULL) {
|
|
srcpad = GST_PAD_CAST (gst_pad_new_from_template (tmpl, name));
|
|
g_free (name);
|
|
gst_object_unref (tmpl);
|
|
}
|
|
if (!srcpad) {
|
|
GST_WARNING_OBJECT (mssdemux, "Ignoring unknown type stream");
|
|
return NULL;
|
|
}
|
|
|
|
return srcpad;
|
|
}
|
|
|
|
static void
|
|
gst_mss_demux_apply_protection_system (GstCaps * caps,
|
|
const gchar * selected_system)
|
|
{
|
|
GstStructure *s;
|
|
|
|
g_return_if_fail (selected_system);
|
|
s = gst_caps_get_structure (caps, 0);
|
|
gst_structure_set (s,
|
|
"original-media-type", G_TYPE_STRING, gst_structure_get_name (s),
|
|
GST_PROTECTION_SYSTEM_ID_CAPS_FIELD, G_TYPE_STRING, selected_system,
|
|
NULL);
|
|
gst_structure_set_name (s, "application/x-cenc");
|
|
|
|
}
|
|
|
|
static gboolean
|
|
gst_mss_demux_setup_streams (GstAdaptiveDemux * demux)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
GSList *streams = gst_mss_manifest_get_streams (mssdemux->manifest);
|
|
GSList *active_streams = NULL;
|
|
GSList *iter;
|
|
const gchar *protection_system_id =
|
|
gst_mss_manifest_get_protection_system_id (mssdemux->manifest);
|
|
const gchar *protection_data =
|
|
gst_mss_manifest_get_protection_data (mssdemux->manifest);
|
|
gboolean protected = protection_system_id && protection_data;
|
|
const gchar *selected_system = NULL;
|
|
|
|
if (streams == NULL) {
|
|
GST_INFO_OBJECT (mssdemux, "No streams found in the manifest");
|
|
GST_ELEMENT_ERROR (mssdemux, STREAM, DEMUX,
|
|
(_("This file contains no playable streams.")),
|
|
("no streams found at the Manifest"));
|
|
return FALSE;
|
|
}
|
|
|
|
if (protected) {
|
|
const gchar *sys_ids[2] = { protection_system_id, NULL };
|
|
|
|
selected_system = gst_protection_select_system (sys_ids);
|
|
if (!selected_system) {
|
|
GST_ERROR_OBJECT (mssdemux, "stream is protected, but no "
|
|
"suitable decryptor element has been found");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
GST_INFO_OBJECT (mssdemux, "Changing max bitrate to %u",
|
|
demux->connection_speed);
|
|
gst_mss_manifest_change_bitrate (mssdemux->manifest, demux->connection_speed);
|
|
|
|
GST_INFO_OBJECT (mssdemux, "Activating streams");
|
|
|
|
for (iter = streams; iter; iter = g_slist_next (iter)) {
|
|
GstPad *srcpad = NULL;
|
|
GstMssDemuxStream *stream = NULL;
|
|
GstMssStream *manifeststream = iter->data;
|
|
|
|
srcpad = _create_pad (mssdemux, manifeststream);
|
|
|
|
if (!srcpad) {
|
|
continue;
|
|
}
|
|
|
|
stream = (GstMssDemuxStream *)
|
|
gst_adaptive_demux_stream_new (GST_ADAPTIVE_DEMUX_CAST (mssdemux),
|
|
srcpad);
|
|
stream->manifest_stream = manifeststream;
|
|
gst_mss_stream_set_active (manifeststream, TRUE);
|
|
active_streams = g_slist_prepend (active_streams, stream);
|
|
}
|
|
|
|
GST_INFO_OBJECT (mssdemux, "Changing max bitrate to %u",
|
|
demux->connection_speed);
|
|
gst_mss_manifest_change_bitrate (mssdemux->manifest, demux->connection_speed);
|
|
|
|
for (iter = active_streams; iter; iter = g_slist_next (iter)) {
|
|
GstMssDemuxStream *stream = iter->data;
|
|
GstCaps *caps;
|
|
const gchar *lang;
|
|
|
|
caps = gst_mss_stream_get_caps (stream->manifest_stream);
|
|
|
|
if (protected) {
|
|
gst_mss_demux_apply_protection_system (caps, selected_system);
|
|
}
|
|
|
|
gst_adaptive_demux_stream_set_caps (GST_ADAPTIVE_DEMUX_STREAM_CAST (stream),
|
|
create_mss_caps (stream, caps));
|
|
gst_caps_unref (caps);
|
|
|
|
lang = gst_mss_stream_get_lang (stream->manifest_stream);
|
|
if (lang != NULL) {
|
|
GstTagList *tags;
|
|
|
|
tags = gst_tag_list_new (GST_TAG_LANGUAGE_CODE, lang, NULL);
|
|
gst_adaptive_demux_stream_set_tags (GST_ADAPTIVE_DEMUX_STREAM_CAST
|
|
(stream), tags);
|
|
}
|
|
|
|
if (protected) {
|
|
GstBuffer *protection_buffer =
|
|
gst_buffer_new_wrapped (g_strdup (protection_data),
|
|
strlen (protection_data));
|
|
GstEvent *event =
|
|
gst_event_new_protection (protection_system_id, protection_buffer,
|
|
"smooth-streaming");
|
|
|
|
GST_LOG_OBJECT (stream, "Queueing Protection event on source pad");
|
|
gst_adaptive_demux_stream_queue_event ((GstAdaptiveDemuxStream *) stream,
|
|
event);
|
|
gst_buffer_unref (protection_buffer);
|
|
}
|
|
}
|
|
|
|
g_slist_free (active_streams);
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_mss_demux_update_base_url (GstMssDemux * mssdemux)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (mssdemux);
|
|
gchar *baseurl_end;
|
|
|
|
g_free (mssdemux->base_url);
|
|
|
|
mssdemux->base_url =
|
|
g_strdup (demux->manifest_base_uri ? demux->manifest_base_uri : demux->
|
|
manifest_uri);
|
|
baseurl_end = g_strrstr (mssdemux->base_url, "/Manifest");
|
|
if (baseurl_end == NULL) {
|
|
/* second try */
|
|
baseurl_end = g_strrstr (mssdemux->base_url, "/manifest");
|
|
}
|
|
if (baseurl_end) {
|
|
/* set the new end of the string */
|
|
baseurl_end[0] = '\0';
|
|
} else {
|
|
GST_WARNING_OBJECT (mssdemux, "Stream's URI didn't end with /manifest");
|
|
}
|
|
|
|
}
|
|
|
|
static gboolean
|
|
gst_mss_demux_process_manifest (GstAdaptiveDemux * demux, GstBuffer * buf)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
|
|
gst_mss_demux_update_base_url (mssdemux);
|
|
|
|
mssdemux->manifest = gst_mss_manifest_new (buf);
|
|
if (!mssdemux->manifest) {
|
|
GST_ELEMENT_ERROR (mssdemux, STREAM, FORMAT, ("Bad manifest file"),
|
|
("Xml manifest file couldn't be parsed"));
|
|
return FALSE;
|
|
}
|
|
return gst_mss_demux_setup_streams (demux);
|
|
}
|
|
|
|
static gboolean
|
|
gst_mss_demux_stream_select_bitrate (GstAdaptiveDemuxStream * stream,
|
|
guint64 bitrate)
|
|
{
|
|
GstMssDemuxStream *mssstream = (GstMssDemuxStream *) stream;
|
|
gboolean ret = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (stream->pad,
|
|
"Using stream download bitrate %" G_GUINT64_FORMAT, bitrate);
|
|
|
|
if (gst_mss_stream_select_bitrate (mssstream->manifest_stream,
|
|
bitrate / MAX (1.0, ABS (stream->demux->segment.rate)))) {
|
|
GstCaps *caps;
|
|
GstCaps *msscaps;
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (stream->demux);
|
|
const gchar *protection_system_id =
|
|
gst_mss_manifest_get_protection_system_id (mssdemux->manifest);
|
|
const gchar *protection_data =
|
|
gst_mss_manifest_get_protection_data (mssdemux->manifest);
|
|
gboolean protected = protection_system_id && protection_data;
|
|
|
|
caps = gst_mss_stream_get_caps (mssstream->manifest_stream);
|
|
|
|
GST_DEBUG_OBJECT (stream->pad,
|
|
"Starting streams reconfiguration due to bitrate changes");
|
|
|
|
if (protected) {
|
|
const gchar *sys_ids[2] = { protection_system_id, NULL };
|
|
const gchar *selected_system = gst_protection_select_system (sys_ids);
|
|
|
|
if (!selected_system) {
|
|
GST_ERROR_OBJECT (mssdemux, "stream is protected, but no "
|
|
"suitable decryptor element has been found");
|
|
gst_caps_unref (caps);
|
|
return FALSE;
|
|
}
|
|
|
|
gst_mss_demux_apply_protection_system (caps, selected_system);
|
|
}
|
|
|
|
msscaps = create_mss_caps (mssstream, caps);
|
|
|
|
GST_DEBUG_OBJECT (stream->pad,
|
|
"Stream changed bitrate to %" G_GUINT64_FORMAT " caps: %"
|
|
GST_PTR_FORMAT,
|
|
gst_mss_stream_get_current_bitrate (mssstream->manifest_stream), caps);
|
|
|
|
gst_caps_unref (caps);
|
|
|
|
gst_adaptive_demux_stream_set_caps (stream, msscaps);
|
|
ret = TRUE;
|
|
GST_DEBUG_OBJECT (stream->pad, "Finished streams reconfiguration");
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#define SEEK_UPDATES_PLAY_POSITION(r, start_type, stop_type) \
|
|
((r >= 0 && start_type != GST_SEEK_TYPE_NONE) || \
|
|
(r < 0 && stop_type != GST_SEEK_TYPE_NONE))
|
|
|
|
static gboolean
|
|
gst_mss_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek)
|
|
{
|
|
gdouble rate;
|
|
GstFormat format;
|
|
GstSeekFlags flags;
|
|
GstSeekType start_type, stop_type;
|
|
gint64 start, stop;
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
|
|
gst_event_parse_seek (seek, &rate, &format, &flags, &start_type, &start,
|
|
&stop_type, &stop);
|
|
|
|
GST_DEBUG_OBJECT (mssdemux,
|
|
"seek event, rate: %f start: %" GST_TIME_FORMAT " stop: %"
|
|
GST_TIME_FORMAT, rate, GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
|
|
|
|
if (SEEK_UPDATES_PLAY_POSITION (rate, start_type, stop_type)) {
|
|
if (rate >= 0)
|
|
gst_mss_manifest_seek (mssdemux->manifest, rate >= 0, start);
|
|
else
|
|
gst_mss_manifest_seek (mssdemux->manifest, rate >= 0, stop);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mss_demux_stream_has_next_fragment (GstAdaptiveDemuxStream * stream)
|
|
{
|
|
GstMssDemuxStream *mssstream = (GstMssDemuxStream *) stream;
|
|
|
|
return gst_mss_stream_has_next_fragment (mssstream->manifest_stream);
|
|
}
|
|
|
|
static gint64
|
|
gst_mss_demux_get_manifest_update_interval (GstAdaptiveDemux * demux)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
GstClockTime interval;
|
|
|
|
/* Not much information about this in the MSS spec. It seems that
|
|
* the fragments contain an UUID box that should tell the next
|
|
* fragments time and duration so one wouldn't need to fetch
|
|
* the Manifest again, but we need a fallback here. So use 2 times
|
|
* the current fragment duration */
|
|
|
|
interval = gst_mss_manifest_get_min_fragment_duration (mssdemux->manifest);
|
|
if (!GST_CLOCK_TIME_IS_VALID (interval))
|
|
interval = 2 * GST_SECOND; /* default to 2 seconds */
|
|
|
|
interval = 2 * (interval / GST_USECOND);
|
|
|
|
return interval;
|
|
}
|
|
|
|
static gint64
|
|
gst_mss_demux_stream_get_fragment_waiting_time (GstAdaptiveDemuxStream * stream)
|
|
{
|
|
/* Wait a second for live streams so we don't try premature fragments downloading */
|
|
return GST_SECOND;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mss_demux_update_manifest_data (GstAdaptiveDemux * demux,
|
|
GstBuffer * buffer)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
|
|
gst_mss_demux_update_base_url (mssdemux);
|
|
|
|
gst_mss_manifest_reload_fragments (mssdemux->manifest, buffer);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mss_demux_get_live_seek_range (GstAdaptiveDemux * demux, gint64 * start,
|
|
gint64 * stop)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
|
|
return gst_mss_manifest_get_live_seek_range (mssdemux->manifest, start, stop);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mss_demux_data_received (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemuxStream * stream, GstBuffer * buffer)
|
|
{
|
|
GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
|
|
GstMssDemuxStream *mssstream = (GstMssDemuxStream *) stream;
|
|
gsize available;
|
|
|
|
if (!gst_mss_manifest_is_live (mssdemux->manifest)) {
|
|
return GST_ADAPTIVE_DEMUX_CLASS (parent_class)->data_received (demux,
|
|
stream, buffer);
|
|
}
|
|
|
|
if (gst_mss_stream_fragment_parsing_needed (mssstream->manifest_stream)) {
|
|
gst_mss_manifest_live_adapter_push (mssstream->manifest_stream, buffer);
|
|
available =
|
|
gst_mss_manifest_live_adapter_available (mssstream->manifest_stream);
|
|
// FIXME: try to reduce this minimal size.
|
|
if (available < 4096) {
|
|
return GST_FLOW_OK;
|
|
} else {
|
|
GST_LOG_OBJECT (stream->pad, "enough data, parsing fragment.");
|
|
buffer =
|
|
gst_mss_manifest_live_adapter_take_buffer (mssstream->manifest_stream,
|
|
available);
|
|
gst_mss_stream_parse_fragment (mssstream->manifest_stream, buffer);
|
|
}
|
|
}
|
|
|
|
return GST_ADAPTIVE_DEMUX_CLASS (parent_class)->data_received (demux, stream,
|
|
buffer);
|
|
}
|
|
|
|
static gboolean
|
|
gst_mss_demux_requires_periodical_playlist_update (GstAdaptiveDemux * demux)
|
|
{
|
|
return TRUE;
|
|
}
|