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gstreamer/subprojects/gst-plugins-bad/ext/dash/gstdashsink.c
Haihua Hu fb2b64ea7f dashsink: add property to set suggested presentation delay of MPD 
add property suggested-presentation-delay to configure MPD info

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4687>
2023-06-25 15:40:18 +00:00

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/* GStreamer
* Copyright (C) 2019 Stéphane Cerveau <scerveau@collabora.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-dashsink
* @title: dashsink
*
* Dynamic Adaptive Streaming over HTTP sink/server
*
* ## Example launch line
* |[
* gst-launch-1.0 dashsink name=dashsink audiotestsrc is-live=true ! avenc_aac ! dashsink.audio_0 videotestsrc is-live=true ! x264enc ! dashsink.video_0
* ]|
*
*/
/* Implementation notes:
*
* The following section describes how dashsink works internally.
*
* Introduction:
*
* This element aims to generate the Media Pressentation Description XML based file
* used as DASH content in addition to the necessary media fragments.
* Based on splitmuxsink branches to generate the media fragments,
* the element will generate a new adaptation set for each media type (video/audio/test)
* and a new representation for each additional stream for a media type.
* ,----------------dashsink------------------,
* ; ,----------splitmuxsink--------------, ;
* ,-videotestsrc-, ,-x264enc-, ; ; ,-Queue-, ,-mpegtsmux-, ,-filesink-, ; ;
* ; o--o o---o--o ; o-o o-o , ; ;
* '--------------' '---------' ; ; '-------' '---------' '----------' ; ;
* ; '------------------------------------' ;
* ; ;
* ; ,----------splitmuxsink--------------, ;
* ,-audiotestsrc-, ,-avenc_aac-, ; ; ,-Queue-, ,-mpegtsmux-, ,-filesink-, ; ;
* ; o--o o-o--o o-o o-o ; ; ;
* '--------------' '-----------' ; ; '-------' '---------' '----------' ; ;
* ; '------------------------------------' ;
* ' -----------------------------------------'
* * "DASH Sink"
* |_ Period 1
* | |_ Video Adaptation Set
* | | |_ Representation 1 - Container/Codec - bitrate X
* | |_ Representation 2 - Container/Codec - bitrate Y
* | |_ Audio Adaptation Set
* | |_ Representation 1 - Container/Codec - bitrate X
* | |_ Representation 2 - Container/Codec - bitrate Y
*
* This element is able to generate static or dynamic MPD with multiple adaptation sets,
* multiple representations and multiple periods for three kind of
* media streams (Video/Audio/Text).
*
* It supports any kind of stream input codec
* which can be encapsulated in Transport Stream (MPEG-TS) or ISO media format (MP4).
* The current implementation is generating compliant MPDs for both static and dynamic
* profiles with https://conformance.dashif.org/
*
* Limitations:
*
* The fragments during the DASH generation does not look reliable enough to be used as
* a production solution. Some additional or fine tuning work needs to be performed to address
* these issues, especially for MP4 fragments.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdashsink.h"
#include "gstmpdparser.h"
#include <gst/pbutils/pbutils.h>
#include <gst/video/video.h>
#include <glib/gstdio.h>
#include <gio/gio.h>
#include <memory.h>
GST_DEBUG_CATEGORY_STATIC (gst_dash_sink_debug);
#define GST_CAT_DEFAULT gst_dash_sink_debug
/**
* GstDashSinkMuxerType:
* @GST_DASH_SINK_MUXER_TS: Use mpegtsmux
* @GST_DASH_SINK_MUXER_MP4: Use mp4mux
*
* Muxer type
*/
typedef enum
{
GST_DASH_SINK_MUXER_TS = 0,
GST_DASH_SINK_MUXER_MP4 = 1,
} GstDashSinkMuxerType;
typedef struct _DashSinkMuxer
{
GstDashSinkMuxerType type;
const gchar *element_name;
const gchar *mimetype;
const gchar *file_ext;
} DashSinkMuxer;
#define GST_TYPE_DASH_SINK_MUXER (gst_dash_sink_muxer_get_type())
static GType
gst_dash_sink_muxer_get_type (void)
{
static GType dash_sink_muxer_type = 0;
static const GEnumValue muxer_type[] = {
{GST_DASH_SINK_MUXER_TS, "Use mpegtsmux", "ts"},
{GST_DASH_SINK_MUXER_MP4, "Use mp4mux", "mp4"},
{0, NULL, NULL},
};
if (!dash_sink_muxer_type) {
dash_sink_muxer_type =
g_enum_register_static ("GstDashSinkMuxerType", muxer_type);
}
return dash_sink_muxer_type;
}
static const DashSinkMuxer dash_muxer_list[] = {
{
GST_DASH_SINK_MUXER_TS,
"mpegtsmux",
"video/mp2t",
"ts"},
{
GST_DASH_SINK_MUXER_MP4,
"mp4mux",
"video/mp4",
"mp4"},
};
#define DEFAULT_SEGMENT_LIST_TPL "_%05d"
#define DEFAULT_SEGMENT_TEMPLATE_TPL "_%d"
#define DEFAULT_MPD_FILENAME "dash.mpd"
#define DEFAULT_MPD_ROOT_PATH NULL
#define DEFAULT_TARGET_DURATION 15
#define DEFAULT_SEND_KEYFRAME_REQUESTS TRUE
#define DEFAULT_MPD_NAMESPACE "urn:mpeg:dash:schema:mpd:2011"
#define DEFAULT_MPD_PROFILES "urn:mpeg:dash:profile:isoff-main:2011"
#define DEFAULT_MPD_SCHEMA_LOCATION "urn:mpeg:DASH:schema:MPD:2011 DASH-MPD.xsd"
#define DEFAULT_MPD_USE_SEGMENT_LIST FALSE
#define DEFAULT_MPD_MIN_BUFFER_TIME 2000
#define DEFAULT_MPD_PERIOD_DURATION GST_CLOCK_TIME_NONE
#define DEFAULT_MPD_SUGGESTED_PRESENTATION_DELAY 0
#define DEFAULT_DASH_SINK_MUXER GST_DASH_SINK_MUXER_TS
enum
{
ADAPTATION_SET_ID_VIDEO = 1,
ADAPTATION_SET_ID_AUDIO,
ADAPTATION_SET_ID_SUBTITLE,
};
enum
{
PROP_0,
PROP_MPD_FILENAME,
PROP_MPD_ROOT_PATH,
PROP_TARGET_DURATION,
PROP_SEND_KEYFRAME_REQUESTS,
PROP_USE_SEGMENT_LIST,
PROP_MPD_DYNAMIC,
PROP_MUXER,
PROP_MPD_MINIMUM_UPDATE_PERIOD,
PROP_MPD_MIN_BUFFER_TIME,
PROP_MPD_BASEURL,
PROP_MPD_PERIOD_DURATION,
PROP_MPD_SUGGESTED_PRESENTATION_DELAY,
};
enum
{
SIGNAL_GET_PLAYLIST_STREAM,
SIGNAL_GET_FRAGMENT_STREAM,
SIGNAL_LAST
};
static guint signals[SIGNAL_LAST];
typedef enum
{
DASH_SINK_STREAM_TYPE_VIDEO = 0,
DASH_SINK_STREAM_TYPE_AUDIO,
DASH_SINK_STREAM_TYPE_SUBTITLE,
DASH_SINK_STREAM_TYPE_UNKNOWN,
} GstDashSinkStreamType;
typedef struct _GstDashSinkStreamVideoInfo
{
gint width;
gint height;
} GstDashSinkStreamVideoInfo;
typedef struct _GstDashSinkStreamAudioInfo
{
gint channels;
gint rate;
} GstDashSinkStreamAudioInfo;
typedef struct GstDashSinkStreamSubtitleInfo
{
gchar *codec;
} GstDashSinkStreamSubtitleInfo;
typedef union _GstDashSinkStreamInfo
{
GstDashSinkStreamVideoInfo video;
GstDashSinkStreamAudioInfo audio;
GstDashSinkStreamSubtitleInfo subtitle;
} GstDashSinkStreamInfo;
struct _GstDashSink
{
GstBin bin;
GMutex mpd_lock;
gchar *location;
gchar *mpd_filename;
gchar *mpd_root_path;
gchar *mpd_profiles;
gchar *mpd_baseurl;
GstDashSinkMuxerType muxer;
GstMPDClient *mpd_client;
gchar *current_period_id;
gint target_duration;
GstClockTime running_time;
gboolean send_keyframe_requests;
gboolean use_segment_list;
gboolean is_dynamic;
gchar *segment_file_tpl;
guint index;
GList *streams;
guint64 minimum_update_period;
guint64 suggested_presentation_delay;
guint64 min_buffer_time;
gint64 period_duration;
};
typedef struct _GstDashSinkStream
{
GstDashSink *sink;
GstDashSinkStreamType type;
GstPad *pad;
gint buffer_probe;
GstElement *splitmuxsink;
gint adaptation_set_id;
gchar *representation_id;
gchar *current_segment_location;
gint current_segment_id;
gint next_segment_id;
gchar *mimetype;
gint bitrate;
gchar *codec;
GstClockTime current_running_time_start;
GstDashSinkStreamInfo info;
GstElement *giostreamsink;
} GstDashSinkStream;
static GstStaticPadTemplate video_sink_template =
GST_STATIC_PAD_TEMPLATE ("video_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate audio_sink_template =
GST_STATIC_PAD_TEMPLATE ("audio_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate subtitle_sink_template =
GST_STATIC_PAD_TEMPLATE ("subtitle_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
#define gst_dash_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstDashSink, gst_dash_sink, GST_TYPE_BIN,
GST_DEBUG_CATEGORY_INIT (gst_dash_sink_debug, "dashsink", 0, "DashSink"));
GST_ELEMENT_REGISTER_DEFINE (dashsink, "dashsink", GST_RANK_NONE,
gst_dash_sink_get_type ());
static void gst_dash_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * spec);
static void gst_dash_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * spec);
static void gst_dash_sink_handle_message (GstBin * bin, GstMessage * message);
static void gst_dash_sink_reset (GstDashSink * sink);
static GstStateChangeReturn
gst_dash_sink_change_state (GstElement * element, GstStateChange trans);
static GstPad *gst_dash_sink_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_dash_sink_release_pad (GstElement * element, GstPad * pad);
static GstDashSinkStream *
gst_dash_sink_stream_from_pad (GList * streams, GstPad * pad)
{
GList *l;
GstDashSinkStream *stream = NULL;
for (l = streams; l != NULL; l = l->next) {
stream = l->data;
if (stream->pad == pad)
return stream;
}
return NULL;
}
static GstDashSinkStream *
gst_dash_sink_stream_from_splitmuxsink (GList * streams, GstElement * element)
{
GList *l;
GstDashSinkStream *stream = NULL;
for (l = streams; l != NULL; l = l->next) {
stream = l->data;
if (stream->splitmuxsink == element)
return stream;
}
return NULL;
}
static gchar *
gst_dash_sink_stream_get_next_name (GList * streams, GstDashSinkStreamType type)
{
GList *l;
guint count = 0;
GstDashSinkStream *stream = NULL;
gchar *name = NULL;
for (l = streams; l != NULL; l = l->next) {
stream = l->data;
if (stream->type == type)
count++;
}
switch (type) {
case DASH_SINK_STREAM_TYPE_VIDEO:
name = g_strdup_printf ("video_%d", count);
break;
case DASH_SINK_STREAM_TYPE_AUDIO:
name = g_strdup_printf ("audio_%d", count);
break;
case DASH_SINK_STREAM_TYPE_SUBTITLE:
name = g_strdup_printf ("sub_%d", count);
break;
default:
name = g_strdup_printf ("unknown_%d", count);
}
return name;
}
static void
gst_dash_sink_stream_free (gpointer s)
{
GstDashSinkStream *stream = (GstDashSinkStream *) s;
g_object_unref (stream->sink);
g_free (stream->current_segment_location);
g_free (stream->representation_id);
g_free (stream->mimetype);
g_free (stream->codec);
g_free (stream);
}
static void
gst_dash_sink_dispose (GObject * object)
{
GstDashSink *sink = GST_DASH_SINK (object);
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
}
static void
gst_dash_sink_finalize (GObject * object)
{
GstDashSink *sink = GST_DASH_SINK (object);
g_free (sink->mpd_filename);
g_free (sink->mpd_root_path);
g_free (sink->mpd_profiles);
if (sink->mpd_client)
gst_mpd_client_free (sink->mpd_client);
g_mutex_clear (&sink->mpd_lock);
g_list_free_full (sink->streams, gst_dash_sink_stream_free);
G_OBJECT_CLASS (parent_class)->finalize ((GObject *) sink);
}
/* Default implementations for the signal handlers */
static GOutputStream *
gst_dash_sink_get_playlist_stream (GstDashSink * sink, const gchar * location)
{
GFile *file = g_file_new_for_path (location);
GOutputStream *ostream;
GError *err = NULL;
ostream =
G_OUTPUT_STREAM (g_file_replace (file, NULL, FALSE,
G_FILE_CREATE_REPLACE_DESTINATION, NULL, &err));
if (!ostream) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
(("Got no output stream for playlist '%s': %s."), location,
err->message), (NULL));
g_clear_error (&err);
}
g_object_unref (file);
return ostream;
}
static GOutputStream *
gst_dash_sink_get_fragment_stream (GstDashSink * sink, const gchar * location)
{
GFile *file = g_file_new_for_path (location);
GOutputStream *ostream;
GError *err = NULL;
ostream =
G_OUTPUT_STREAM (g_file_replace (file, NULL, FALSE,
G_FILE_CREATE_REPLACE_DESTINATION, NULL, &err));
if (!ostream) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
(("Got no output stream for fragment '%s': %s."), location,
err->message), (NULL));
g_clear_error (&err);
}
g_object_unref (file);
return ostream;
}
static void
gst_dash_sink_class_init (GstDashSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBinClass *bin_class;
gobject_class = (GObjectClass *) klass;
element_class = GST_ELEMENT_CLASS (klass);
bin_class = GST_BIN_CLASS (klass);
gst_element_class_add_static_pad_template (element_class,
&video_sink_template);
gst_element_class_add_static_pad_template (element_class,
&audio_sink_template);
gst_element_class_add_static_pad_template (element_class,
&subtitle_sink_template);
gst_element_class_set_static_metadata (element_class,
"DASH Sink", "Sink",
"Dynamic Adaptive Streaming over HTTP sink",
"Stéphane Cerveau <scerveau@collabora.com>");
element_class->change_state = GST_DEBUG_FUNCPTR (gst_dash_sink_change_state);
element_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_dash_sink_request_new_pad);
element_class->release_pad = GST_DEBUG_FUNCPTR (gst_dash_sink_release_pad);
bin_class->handle_message = gst_dash_sink_handle_message;
gobject_class->dispose = gst_dash_sink_dispose;
gobject_class->finalize = gst_dash_sink_finalize;
gobject_class->set_property = gst_dash_sink_set_property;
gobject_class->get_property = gst_dash_sink_get_property;
g_object_class_install_property (gobject_class, PROP_MPD_FILENAME,
g_param_spec_string ("mpd-filename", "MPD filename",
"filename of the mpd to write", DEFAULT_MPD_FILENAME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MPD_ROOT_PATH,
g_param_spec_string ("mpd-root-path", "MPD Root Path",
"Path where the MPD and its fragents will be written",
DEFAULT_MPD_ROOT_PATH, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MPD_BASEURL,
g_param_spec_string ("mpd-baseurl", "MPD BaseURL",
"BaseURL to set in the MPD", DEFAULT_MPD_ROOT_PATH,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TARGET_DURATION,
g_param_spec_uint ("target-duration", "Target duration",
"The target duration in seconds of a segment/file. "
"(0 - disabled, useful for management of segment duration by the "
"streaming server)", 0, G_MAXUINT, DEFAULT_TARGET_DURATION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SEND_KEYFRAME_REQUESTS,
g_param_spec_boolean ("send-keyframe-requests", "Send Keyframe Requests",
"Send keyframe requests to ensure correct fragmentation. If this is disabled "
"then the input must have keyframes in regular intervals",
DEFAULT_SEND_KEYFRAME_REQUESTS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_USE_SEGMENT_LIST,
g_param_spec_boolean ("use-segment-list", "Use segment list",
"Use segment list instead of segment template to create the segments",
DEFAULT_MPD_USE_SEGMENT_LIST,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MPD_DYNAMIC,
g_param_spec_boolean ("dynamic", "dynamic", "Provides a dynamic mpd",
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MUXER,
g_param_spec_enum ("muxer", "Muxer",
"Muxer type to be used by dashsink to generate the fragment",
GST_TYPE_DASH_SINK_MUXER, DEFAULT_DASH_SINK_MUXER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_MPD_MINIMUM_UPDATE_PERIOD,
g_param_spec_uint64 ("minimum-update-period", "Minimum update period",
"Provides to the manifest a minimum update period in milliseconds", 0,
G_MAXUINT64, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_MPD_MIN_BUFFER_TIME,
g_param_spec_uint64 ("min-buffer-time", "Mininim buffer time",
"Provides to the manifest a minimum buffer time in milliseconds", 0,
G_MAXUINT64, DEFAULT_MPD_MIN_BUFFER_TIME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_MPD_PERIOD_DURATION,
g_param_spec_uint64 ("period-duration", "period duration",
"Provides the explicit duration of a period in milliseconds", 0,
G_MAXUINT64, DEFAULT_MPD_PERIOD_DURATION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstDashSink:suggested-presentation-delay
*
* set suggested presentation delay of MPD file in milliseconds
*
* Since: 1.24
*/
g_object_class_install_property (gobject_class,
PROP_MPD_SUGGESTED_PRESENTATION_DELAY,
g_param_spec_uint64 ("suggested-presentation-delay",
"suggested presentation delay",
"Provides to the manifest a suggested presentation delay in milliseconds",
0, G_MAXUINT64, DEFAULT_MPD_SUGGESTED_PRESENTATION_DELAY,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstDashSink::get-playlist-stream:
* @sink: the #GstDashSink
* @location: Location for the playlist file
*
* Returns: #GOutputStream for writing the playlist file.
*
* Since: 1.20
*/
signals[SIGNAL_GET_PLAYLIST_STREAM] =
g_signal_new_class_handler ("get-playlist-stream",
G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_CALLBACK (gst_dash_sink_get_playlist_stream), NULL, NULL, NULL,
G_TYPE_OUTPUT_STREAM, 1, G_TYPE_STRING);
/**
* GstDashSink::get-fragment-stream:
* @sink: the #GstDashSink
* @location: Location for the fragment file
*
* Returns: #GOutputStream for writing the fragment file.
*
* Since: 1.20
*/
signals[SIGNAL_GET_FRAGMENT_STREAM] =
g_signal_new_class_handler ("get-fragment-stream",
G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_CALLBACK (gst_dash_sink_get_fragment_stream), NULL, NULL, NULL,
G_TYPE_OUTPUT_STREAM, 1, G_TYPE_STRING);
gst_type_mark_as_plugin_api (GST_TYPE_DASH_SINK_MUXER, 0);
}
static gchar *
on_format_location (GstElement * splitmuxsink, guint fragment_id,
GstDashSinkStream * dash_stream)
{
GOutputStream *stream = NULL;
GstDashSink *sink = dash_stream->sink;
gchar *segment_tpl_path;
dash_stream->current_segment_id = dash_stream->next_segment_id;
g_free (dash_stream->current_segment_location);
if (sink->use_segment_list)
dash_stream->current_segment_location =
g_strdup_printf ("%s" DEFAULT_SEGMENT_LIST_TPL ".%s",
dash_stream->representation_id, dash_stream->current_segment_id,
dash_muxer_list[sink->muxer].file_ext);
else {
dash_stream->current_segment_location =
g_strdup_printf ("%s" DEFAULT_SEGMENT_TEMPLATE_TPL ".%s",
dash_stream->representation_id, dash_stream->current_segment_id,
dash_muxer_list[sink->muxer].file_ext);
}
dash_stream->next_segment_id++;
if (sink->mpd_root_path)
segment_tpl_path =
g_build_path (G_DIR_SEPARATOR_S, sink->mpd_root_path,
dash_stream->current_segment_location, NULL);
else
segment_tpl_path = g_strdup (dash_stream->current_segment_location);
g_signal_emit (sink, signals[SIGNAL_GET_FRAGMENT_STREAM], 0, segment_tpl_path,
&stream);
if (!stream)
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
(("Got no output stream for fragment '%s'."), segment_tpl_path),
(NULL));
else
g_object_set (dash_stream->giostreamsink, "stream", stream, NULL);
if (stream)
g_object_unref (stream);
g_free (segment_tpl_path);
return NULL;
}
static gboolean
gst_dash_sink_add_splitmuxsink (GstDashSink * sink, GstDashSinkStream * stream)
{
GstElement *mux =
gst_element_factory_make (dash_muxer_list[sink->muxer].element_name,
NULL);
if (sink->muxer == GST_DASH_SINK_MUXER_MP4)
g_object_set (mux, "fragment-duration", sink->target_duration * GST_MSECOND,
NULL);
g_return_val_if_fail (mux != NULL, FALSE);
stream->splitmuxsink = gst_element_factory_make ("splitmuxsink", NULL);
if (!stream->splitmuxsink) {
gst_object_unref (mux);
return FALSE;
}
stream->giostreamsink = gst_element_factory_make ("giostreamsink", NULL);
if (!stream->giostreamsink) {
gst_object_unref (stream->splitmuxsink);
gst_object_unref (mux);
return FALSE;
}
gst_bin_add (GST_BIN (sink), stream->splitmuxsink);
if (!sink->use_segment_list)
stream->current_segment_id = 1;
else
stream->current_segment_id = 0;
stream->next_segment_id = stream->current_segment_id;
g_object_set (stream->splitmuxsink, "location", NULL,
"max-size-time", ((GstClockTime) sink->target_duration * GST_SECOND),
"send-keyframe-requests", TRUE, "muxer", mux, "sink",
stream->giostreamsink, "reset-muxer", FALSE, "send-keyframe-requests",
sink->send_keyframe_requests, NULL);
g_signal_connect (stream->splitmuxsink, "format-location",
G_CALLBACK (on_format_location), stream);
return TRUE;
}
static void
gst_dash_sink_init (GstDashSink * sink)
{
sink->mpd_filename = g_strdup (DEFAULT_MPD_FILENAME);
sink->mpd_root_path = g_strdup (DEFAULT_MPD_ROOT_PATH);
sink->mpd_client = NULL;
sink->target_duration = DEFAULT_TARGET_DURATION;
sink->send_keyframe_requests = DEFAULT_SEND_KEYFRAME_REQUESTS;
sink->mpd_profiles = g_strdup (DEFAULT_MPD_PROFILES);
sink->use_segment_list = DEFAULT_MPD_USE_SEGMENT_LIST;
sink->min_buffer_time = DEFAULT_MPD_MIN_BUFFER_TIME;
sink->period_duration = DEFAULT_MPD_PERIOD_DURATION;
sink->suggested_presentation_delay = DEFAULT_MPD_SUGGESTED_PRESENTATION_DELAY;
g_mutex_init (&sink->mpd_lock);
GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
gst_dash_sink_reset (sink);
}
static void
gst_dash_sink_reset (GstDashSink * sink)
{
sink->index = 0;
}
static void
gst_dash_sink_get_stream_metadata (GstDashSink * sink,
GstDashSinkStream * stream)
{
GstStructure *s;
GstCaps *caps = gst_pad_get_current_caps (stream->pad);
GST_DEBUG_OBJECT (sink, "stream caps %s", gst_caps_to_string (caps));
s = gst_caps_get_structure (caps, 0);
switch (stream->type) {
case DASH_SINK_STREAM_TYPE_VIDEO:
{
gst_structure_get_int (s, "width", &stream->info.video.width);
gst_structure_get_int (s, "height", &stream->info.video.height);
g_free (stream->codec);
stream->codec =
g_strdup (gst_mpd_helper_get_video_codec_from_mime (caps));
break;
}
case DASH_SINK_STREAM_TYPE_AUDIO:
{
gst_structure_get_int (s, "channels", &stream->info.audio.channels);
gst_structure_get_int (s, "rate", &stream->info.audio.rate);
g_free (stream->codec);
stream->codec =
g_strdup (gst_mpd_helper_get_audio_codec_from_mime (caps));
break;
}
case DASH_SINK_STREAM_TYPE_SUBTITLE:
{
break;
}
default:
break;
}
gst_caps_unref (caps);
}
static void
gst_dash_sink_generate_mpd_content (GstDashSink * sink,
GstDashSinkStream * stream)
{
if (!sink->mpd_client) {
GList *l;
sink->mpd_client = gst_mpd_client_new ();
/* Add or set root node with stream ids */
gst_mpd_client_set_root_node (sink->mpd_client,
"profiles", sink->mpd_profiles,
"default-namespace", DEFAULT_MPD_NAMESPACE,
"min-buffer-time", sink->min_buffer_time, NULL);
if (sink->is_dynamic) {
GstDateTime *now = gst_date_time_new_now_utc ();
gst_mpd_client_set_root_node (sink->mpd_client,
"type", GST_MPD_FILE_TYPE_DYNAMIC,
"availability-start-time", now, "publish-time", now, NULL);
gst_date_time_unref (now);
}
if (sink->minimum_update_period)
gst_mpd_client_set_root_node (sink->mpd_client,
"minimum-update-period", sink->minimum_update_period, NULL);
if (sink->suggested_presentation_delay)
gst_mpd_client_set_root_node (sink->mpd_client,
"suggested-presentation-delay", sink->suggested_presentation_delay,
NULL);
if (sink->mpd_baseurl)
gst_mpd_client_add_baseurl_node (sink->mpd_client, "url",
sink->mpd_baseurl, NULL);
/* Add or set period node with stream ids
* TODO support multiple period
* */
sink->current_period_id =
gst_mpd_client_set_period_node (sink->mpd_client,
sink->current_period_id, NULL);
for (l = sink->streams; l != NULL; l = l->next) {
GstDashSinkStream *stream = (GstDashSinkStream *) l->data;
/* Add or set adaptation_set node with stream ids
* AdaptationSet per stream type
* */
gst_mpd_client_set_adaptation_set_node (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id, NULL);
/* Add or set representation node with stream ids */
gst_mpd_client_set_representation_node (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id,
stream->representation_id, "bandwidth", stream->bitrate, "mime-type",
stream->mimetype, "codecs", stream->codec, NULL);
/* Set specific to stream type */
if (stream->type == DASH_SINK_STREAM_TYPE_VIDEO) {
gst_mpd_client_set_adaptation_set_node (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id, "content-type",
"video", NULL);
gst_mpd_client_set_representation_node (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id,
stream->representation_id, "width", stream->info.video.width,
"height", stream->info.video.height, NULL);
} else if (stream->type == DASH_SINK_STREAM_TYPE_AUDIO) {
gst_mpd_client_set_adaptation_set_node (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id, "content-type",
"audio", NULL);
gst_mpd_client_set_representation_node (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id,
stream->representation_id, "audio-sampling-rate",
stream->info.audio.rate, NULL);
}
if (sink->use_segment_list) {
/* Add a default segment list */
gst_mpd_client_set_segment_list (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id,
stream->representation_id, "duration", sink->target_duration, NULL);
} else {
gchar *media_segment_template =
g_strconcat (stream->representation_id, "_$Number$",
".", dash_muxer_list[sink->muxer].file_ext, NULL);
gst_mpd_client_set_segment_template (sink->mpd_client,
sink->current_period_id, stream->adaptation_set_id,
stream->representation_id, "media", media_segment_template,
"duration", sink->target_duration, NULL);
g_free (media_segment_template);
}
}
}
/* MPD updates */
if (sink->use_segment_list) {
GST_INFO_OBJECT (sink, "Add segment URL: %s",
stream->current_segment_location);
gst_mpd_client_add_segment_url (sink->mpd_client, sink->current_period_id,
stream->adaptation_set_id, stream->representation_id, "media",
stream->current_segment_location, NULL);
} else {
if (!sink->is_dynamic) {
if (sink->period_duration != DEFAULT_MPD_PERIOD_DURATION)
gst_mpd_client_set_period_node (sink->mpd_client,
sink->current_period_id, "duration", sink->period_duration, NULL);
else
gst_mpd_client_set_period_node (sink->mpd_client,
sink->current_period_id, "duration",
gst_util_uint64_scale (sink->running_time, 1, GST_MSECOND), NULL);
}
if (!sink->minimum_update_period) {
if (sink->period_duration != DEFAULT_MPD_PERIOD_DURATION)
gst_mpd_client_set_root_node (sink->mpd_client,
"media-presentation-duration", sink->period_duration, NULL);
else
gst_mpd_client_set_root_node (sink->mpd_client,
"media-presentation-duration",
gst_util_uint64_scale (sink->running_time, 1, GST_MSECOND), NULL);
}
}
}
static void
gst_dash_sink_write_mpd_file (GstDashSink * sink,
GstDashSinkStream * current_stream)
{
char *mpd_content = NULL;
gint size;
GError *error = NULL;
gchar *mpd_filepath = NULL;
GOutputStream *file_stream = NULL;
gsize bytes_to_write;
g_mutex_lock (&sink->mpd_lock);
gst_dash_sink_generate_mpd_content (sink, current_stream);
if (!gst_mpd_client_get_xml_content (sink->mpd_client, &mpd_content, &size)) {
g_mutex_unlock (&sink->mpd_lock);
return;
}
g_mutex_unlock (&sink->mpd_lock);
if (sink->mpd_root_path)
mpd_filepath =
g_build_path (G_DIR_SEPARATOR_S, sink->mpd_root_path,
sink->mpd_filename, NULL);
else
mpd_filepath = g_strdup (sink->mpd_filename);
GST_DEBUG_OBJECT (sink, "a new mpd content is available: %s", mpd_content);
GST_DEBUG_OBJECT (sink, "write mpd to %s", mpd_filepath);
g_signal_emit (sink, signals[SIGNAL_GET_PLAYLIST_STREAM], 0, mpd_filepath,
&file_stream);
if (!file_stream) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
(("Got no output stream for fragment '%s'."), mpd_filepath), (NULL));
}
bytes_to_write = strlen (mpd_content);
if (!g_output_stream_write_all (file_stream, mpd_content, bytes_to_write,
NULL, NULL, &error)) {
GST_ERROR ("Failed to write mpd content: %s", error->message);
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
(("Failed to write playlist '%s'."), error->message), (NULL));
g_error_free (error);
error = NULL;
}
g_free (mpd_content);
g_free (mpd_filepath);
g_object_unref (file_stream);
}
static void
gst_dash_sink_handle_message (GstBin * bin, GstMessage * message)
{
GstDashSink *sink = GST_DASH_SINK (bin);
GstDashSinkStream *stream = NULL;
switch (message->type) {
case GST_MESSAGE_ELEMENT:
{
const GstStructure *s = gst_message_get_structure (message);
GST_DEBUG_OBJECT (sink, "Received message with name %s",
gst_structure_get_name (s));
stream =
gst_dash_sink_stream_from_splitmuxsink (sink->streams,
GST_ELEMENT (message->src));
if (stream) {
if (gst_structure_has_name (s, "splitmuxsink-fragment-opened")) {
gst_dash_sink_get_stream_metadata (sink, stream);
gst_structure_get_clock_time (s, "running-time",
&stream->current_running_time_start);
} else if (gst_structure_has_name (s, "splitmuxsink-fragment-closed")) {
GstClockTime running_time;
gst_structure_get_clock_time (s, "running-time", &running_time);
if (sink->running_time < running_time)
sink->running_time = running_time;
gst_dash_sink_write_mpd_file (sink, stream);
}
}
break;
}
case GST_MESSAGE_EOS:{
gst_dash_sink_write_mpd_file (sink, NULL);
break;
}
default:
break;
}
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
}
static GstPadProbeReturn
_dash_sink_buffers_probe (GstPad * pad, GstPadProbeInfo * probe_info,
gpointer user_data)
{
GstBuffer *buffer = GST_PAD_PROBE_INFO_BUFFER (probe_info);
GstDashSinkStream *stream = (GstDashSinkStream *) user_data;
if (GST_BUFFER_DURATION (buffer))
stream->bitrate =
gst_buffer_get_size (buffer) * GST_SECOND /
GST_BUFFER_DURATION (buffer);
return GST_PAD_PROBE_OK;
}
static GstPad *
gst_dash_sink_request_new_pad (GstElement * element, GstPadTemplate * templ,
const gchar * pad_name, const GstCaps * caps)
{
GstDashSink *sink = GST_DASH_SINK (element);
GstDashSinkStream *stream = NULL;
GstPad *pad = NULL;
GstPad *peer = NULL;
const gchar *split_pad_name = pad_name;
stream = g_new0 (GstDashSinkStream, 1);
stream->sink = g_object_ref (sink);
if (g_str_has_prefix (templ->name_template, "video")) {
stream->type = DASH_SINK_STREAM_TYPE_VIDEO;
stream->adaptation_set_id = ADAPTATION_SET_ID_VIDEO;
split_pad_name = "video";
} else if (g_str_has_prefix (templ->name_template, "audio")) {
stream->type = DASH_SINK_STREAM_TYPE_AUDIO;
stream->adaptation_set_id = ADAPTATION_SET_ID_AUDIO;
} else if (g_str_has_prefix (templ->name_template, "subtitle")) {
stream->type = DASH_SINK_STREAM_TYPE_SUBTITLE;
stream->adaptation_set_id = ADAPTATION_SET_ID_SUBTITLE;
}
if (pad_name)
stream->representation_id = g_strdup (pad_name);
else
stream->representation_id =
gst_dash_sink_stream_get_next_name (sink->streams, stream->type);
stream->mimetype = g_strdup (dash_muxer_list[sink->muxer].mimetype);
if (!gst_dash_sink_add_splitmuxsink (sink, stream)) {
GST_ERROR_OBJECT (sink,
"Unable to create splitmuxsink element for pad template name %s",
templ->name_template);
gst_dash_sink_stream_free (stream);
goto done;
}
peer = gst_element_request_pad_simple (stream->splitmuxsink, split_pad_name);
if (!peer) {
GST_ERROR_OBJECT (sink, "Unable to request pad name %s", split_pad_name);
return NULL;
}
pad = gst_ghost_pad_new_from_template (pad_name, peer, templ);
gst_pad_set_active (pad, TRUE);
gst_element_add_pad (element, pad);
gst_object_unref (peer);
stream->pad = pad;
stream->buffer_probe = gst_pad_add_probe (stream->pad,
GST_PAD_PROBE_TYPE_BUFFER, _dash_sink_buffers_probe, stream, NULL);
sink->streams = g_list_append (sink->streams, stream);
GST_DEBUG_OBJECT (sink, "Adding a new stream with id %s",
stream->representation_id);
done:
return pad;
}
static void
gst_dash_sink_release_pad (GstElement * element, GstPad * pad)
{
GstDashSink *sink = GST_DASH_SINK (element);
GstPad *peer;
GstDashSinkStream *stream =
gst_dash_sink_stream_from_pad (sink->streams, pad);
g_return_if_fail (stream != NULL);
peer = gst_pad_get_peer (pad);
if (peer) {
gst_element_release_request_pad (stream->splitmuxsink, pad);
gst_object_unref (peer);
}
if (stream->buffer_probe > 0) {
gst_pad_remove_probe (pad, stream->buffer_probe);
stream->buffer_probe = 0;
}
gst_object_ref (pad);
gst_element_remove_pad (element, pad);
gst_pad_set_active (pad, FALSE);
stream->pad = NULL;
gst_object_unref (pad);
}
static GstStateChangeReturn
gst_dash_sink_change_state (GstElement * element, GstStateChange trans)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstDashSink *sink = GST_DASH_SINK (element);
switch (trans) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!g_list_length (sink->streams)) {
return GST_STATE_CHANGE_FAILURE;
}
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, trans);
switch (trans) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
case GST_STATE_CHANGE_READY_TO_NULL:
gst_dash_sink_reset (sink);
break;
default:
break;
}
return ret;
}
static void
gst_dash_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDashSink *sink = GST_DASH_SINK (object);
switch (prop_id) {
case PROP_MPD_FILENAME:
g_free (sink->mpd_filename);
sink->mpd_filename = g_value_dup_string (value);
break;
case PROP_MPD_ROOT_PATH:
g_free (sink->mpd_root_path);
sink->mpd_root_path = g_value_dup_string (value);
break;
case PROP_MPD_BASEURL:
g_free (sink->mpd_baseurl);
sink->mpd_baseurl = g_value_dup_string (value);
break;
case PROP_TARGET_DURATION:
sink->target_duration = g_value_get_uint (value);
break;
case PROP_SEND_KEYFRAME_REQUESTS:
sink->send_keyframe_requests = g_value_get_boolean (value);
break;
case PROP_USE_SEGMENT_LIST:
sink->use_segment_list = g_value_get_boolean (value);
break;
case PROP_MPD_DYNAMIC:
sink->is_dynamic = g_value_get_boolean (value);
break;
case PROP_MUXER:
sink->muxer = g_value_get_enum (value);
break;
case PROP_MPD_MINIMUM_UPDATE_PERIOD:
sink->minimum_update_period = g_value_get_uint64 (value);
break;
case PROP_MPD_SUGGESTED_PRESENTATION_DELAY:
sink->suggested_presentation_delay = g_value_get_uint64 (value);
break;
case PROP_MPD_MIN_BUFFER_TIME:
sink->min_buffer_time = g_value_get_uint64 (value);
break;
case PROP_MPD_PERIOD_DURATION:
sink->period_duration = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_dash_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstDashSink *sink = GST_DASH_SINK (object);
switch (prop_id) {
case PROP_MPD_FILENAME:
g_value_set_string (value, sink->mpd_filename);
break;
case PROP_MPD_ROOT_PATH:
g_value_set_string (value, sink->mpd_root_path);
break;
case PROP_MPD_BASEURL:
g_value_set_string (value, sink->mpd_baseurl);
break;
case PROP_TARGET_DURATION:
g_value_set_uint (value, sink->target_duration);
break;
case PROP_SEND_KEYFRAME_REQUESTS:
g_value_set_boolean (value, sink->send_keyframe_requests);
break;
case PROP_USE_SEGMENT_LIST:
g_value_set_boolean (value, sink->use_segment_list);
break;
case PROP_MPD_DYNAMIC:
g_value_set_boolean (value, sink->is_dynamic);
break;
case PROP_MUXER:
g_value_set_enum (value, sink->muxer);
break;
case PROP_MPD_MINIMUM_UPDATE_PERIOD:
g_value_set_uint64 (value, sink->minimum_update_period);
break;
case PROP_MPD_SUGGESTED_PRESENTATION_DELAY:
g_value_set_uint64 (value, sink->suggested_presentation_delay);
break;
case PROP_MPD_MIN_BUFFER_TIME:
g_value_set_uint64 (value, sink->min_buffer_time);
break;
case PROP_MPD_PERIOD_DURATION:
g_value_set_uint64 (value, sink->period_duration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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