gstreamer/ext/dash/gstdashdemux.h
2013-05-08 18:14:46 -03:00

150 lines
4.1 KiB
C

/*
* DASH demux plugin for GStreamer
*
* gstdashdemux.h
*
* Copyright (C) 2012 Orange
* Authors:
* David Corvoysier <david.corvoysier@orange.com>
* Hamid Zakari <hamid.zakari@gmail.com>
*
* Copyright (C) 2013 Smart TV Alliance
* Author: Thiago Sousa Santos <thiago.sousa.santos@collabora.com>, Collabora Ltd.
*
* 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 2.1 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 (COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_DASH_DEMUX_H__
#define __GST_DASH_DEMUX_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/base/gstdataqueue.h>
#include "gstmpdparser.h"
#include "gstdownloadrate.h"
#include <gst/uridownloader/gsturidownloader.h>
G_BEGIN_DECLS
#define GST_TYPE_DASH_DEMUX \
(gst_dash_demux_get_type())
#define GST_DASH_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DASH_DEMUX,GstDashDemux))
#define GST_DASH_DEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DASH_DEMUX,GstDashDemuxClass))
#define GST_IS_DASH_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DASH_DEMUX))
#define GST_IS_DASH_DEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DASH_DEMUX))
typedef struct _GstDashDemuxStream GstDashDemuxStream;
typedef struct _GstDashDemux GstDashDemux;
typedef struct _GstDashDemuxClass GstDashDemuxClass;
struct _GstDashDemuxStream
{
GstPad *pad;
gint index;
GstCaps *input_caps;
/*
* Need to store the status for the download and
* stream tasks separately as they are working at
* different points of the stream timeline.
* The download task is ahead of the stream.
*
* The download_end_of_period is set when a stream
* has already downloaded all fragments for the current
* period.
*
* The stream_end_of_period is set when a stream
* has pushed all fragments for the current period
*/
gboolean download_end_of_period;
gboolean stream_end_of_period;
gboolean stream_eos;
gboolean need_header;
/* tracks if a stream has enqueued data
* after a pad switch.
* This is required to prevent pads being
* added to the demuxer and having no data
* pushed to it before another pad switch
* as this might make downstream elements
* unhappy and error out if they get
* an EOS without receiving any input
*/
gboolean has_data_queued;
GstDataQueue *queue;
GstDownloadRate dnl_rate;
};
/**
* GstDashDemux:
*
* Opaque #GstDashDemux data structure.
*/
struct _GstDashDemux
{
GstElement parent;
GstPad *sinkpad;
GSList *streams;
GSList *next_periods;
GMutex streams_lock;
GstSegment segment;
gboolean need_segment;
GstClockTime timestamp_offset;
GstBuffer *manifest;
GstUriDownloader *downloader;
GstMpdClient *client; /* MPD client */
gboolean end_of_period;
gboolean end_of_manifest;
/* Properties */
GstClockTime max_buffering_time; /* Maximum buffering time accumulated during playback */
gfloat bandwidth_usage; /* Percentage of the available bandwidth to use */
guint64 max_bitrate; /* max of bitrate supported by target decoder */
/* Streaming task */
GstTask *stream_task;
GRecMutex stream_task_lock;
/* Download task */
GstTask *download_task;
GRecMutex download_task_lock;
gboolean cancelled;
/* Manifest update */
GstClockTime last_manifest_update;
};
struct _GstDashDemuxClass
{
GstElementClass parent_class;
};
GType gst_dash_demux_get_type (void);
G_END_DECLS
#endif /* __GST_DASH_DEMUX_H__ */