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gstreamer/subprojects/gst-plugins-bad/ext/dash/gstdashsink.c
David Svensson Fors 82a06a36cc dashsink: Use gst_codec_utils_caps_get_mime_codec() 
Use gst_codec_utils_caps_get_mime_codec() in pbutils for codec
strings. That function gives more elaborate RFC 6381 compatible
strings than the helper functions in gstmdphelper.c, such as
"avc1.F4000D".

Remove the helper functions, as they were only used from dashsink.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5404>
2023-09-28 18:31:07 +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);
g_free (stream->codec);
stream->codec = gst_codec_utils_caps_get_mime_codec (caps);
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);
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);
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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