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94dcb60127
Do not use a global bitrate as the sizes of the fragments matter when calculating the download rate as the connection setup time is also being taken into the download duration, a smaller fragment will have a lower bitrate than a larger one. This avoids switching the bitrates for streams frequently because of bitrate mismatches
154 lines
4.2 KiB
C
154 lines
4.2 KiB
C
/*
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* DASH demux plugin for GStreamer
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*
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* gstdashdemux.h
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*
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* Copyright (C) 2012 Orange
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* Authors:
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* David Corvoysier <david.corvoysier@orange.com>
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* Hamid Zakari <hamid.zakari@gmail.com>
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*
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* Copyright (C) 2013 Smart TV Alliance
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* Author: Thiago Sousa Santos <thiago.sousa.santos@collabora.com>, Collabora Ltd.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library (COPYING); if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_DASH_DEMUX_H__
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#define __GST_DASH_DEMUX_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <gst/base/gstdataqueue.h>
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#include "gstmpdparser.h"
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#include <gst/uridownloader/gsturidownloader.h>
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G_BEGIN_DECLS
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#define GST_TYPE_DASH_DEMUX \
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(gst_dash_demux_get_type())
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#define GST_DASH_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DASH_DEMUX,GstDashDemux))
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#define GST_DASH_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DASH_DEMUX,GstDashDemuxClass))
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#define GST_IS_DASH_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DASH_DEMUX))
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#define GST_IS_DASH_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DASH_DEMUX))
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typedef struct _GstDashDemuxStream GstDashDemuxStream;
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typedef struct _GstDashDemux GstDashDemux;
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typedef struct _GstDashDemuxClass GstDashDemuxClass;
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struct _GstDashDemuxStream
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{
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GstPad *pad;
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gint index;
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GstCaps *input_caps;
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/*
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* Need to store the status for the download and
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* stream tasks separately as they are working at
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* different points of the stream timeline.
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* The download task is ahead of the stream.
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*
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* The download_end_of_period is set when a stream
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* has already downloaded all fragments for the current
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* period.
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*
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* The stream_end_of_period is set when a stream
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* has pushed all fragments for the current period
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*/
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gboolean download_end_of_period;
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gboolean stream_end_of_period;
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gboolean stream_eos;
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gboolean need_header;
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gboolean need_segment;
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/* tracks if a stream has enqueued data
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* after a pad switch.
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* This is required to prevent pads being
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* added to the demuxer and having no data
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* pushed to it before another pad switch
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* as this might make downstream elements
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* unhappy and error out if they get
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* an EOS without receiving any input
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*/
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gboolean has_data_queued;
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GstDataQueue *queue;
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/* Download rate */
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guint64 dnl_rate;
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};
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/**
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* GstDashDemux:
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*
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* Opaque #GstDashDemux data structure.
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*/
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struct _GstDashDemux
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{
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GstElement parent;
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GstPad *sinkpad;
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GSList *streams;
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GstSegment segment;
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GstBuffer *manifest;
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GstUriDownloader *downloader;
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GstMpdClient *client; /* MPD client */
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gboolean end_of_period;
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gboolean end_of_manifest;
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/* Properties */
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GstClockTime max_buffering_time; /* Maximum buffering time accumulated during playback */
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gfloat bandwidth_usage; /* Percentage of the available bandwidth to use */
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guint64 max_bitrate; /* max of bitrate supported by target decoder */
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/* Streaming task */
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GstTask *stream_task;
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GStaticRecMutex stream_lock;
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GMutex *stream_timed_lock;
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/* Download task */
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GstTask *download_task;
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GStaticRecMutex download_lock;
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gboolean cancelled;
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GMutex *download_timed_lock;
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/* Manifest update */
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GstClockTime last_manifest_update;
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/* Position in the stream */
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GstClockTime position;
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GstClockTime position_shift;
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GstClockTime last_position_shift;
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};
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struct _GstDashDemuxClass
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{
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GstElementClass parent_class;
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};
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GType gst_dash_demux_get_type (void);
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G_END_DECLS
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#endif /* __GST_DASH_DEMUX_H__ */
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