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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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db57a3b04f
The previous code was handling both as separate steps and then tried to combine the results, but this resulted in all kinds of bugs which showed themselves as failures during seeking and offset tracking getting wrong. This also showed itself with gst-validate on the sample stream. The rewritten code now parses everything in one go and tracks the current offset only once, and as a side effect simplifies the code a lot. Also added is detection of SIDX that point to other SIDX instead of actual media segments, e.g. with this stream: http://dash.akamaized.net/dash264/TestCases/1a/sony/SNE_DASH_SD_CASE1A_REVISED.mpd Support for this will have to be added at some point but that should also be easier with the rewritten code. https://bugzilla.gnome.org/show_bug.cgi?id=781233
144 lines
4.1 KiB
C
144 lines
4.1 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/adaptivedemux/gstadaptivedemux.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 "gstisoff.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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#define GST_DASH_DEMUX_CAST(obj) \
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((GstDashDemux *)obj)
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typedef struct _GstDashDemuxClockDrift GstDashDemuxClockDrift;
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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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GstAdaptiveDemuxStream parent;
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gint index;
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GstActiveStream *active_stream;
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GstMediaFragmentInfo current_fragment;
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/* index parsing */
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GstSidxParser sidx_parser;
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GstClockTime sidx_position;
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gint64 sidx_base_offset;
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gboolean allow_sidx;
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GstClockTime pending_seek_ts;
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GstAdapter *adapter;
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/* current offset of the first byte in the adapter / last byte we pushed or
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* dropped*/
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guint64 current_offset;
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/* index = 1, header = 2, data = 3 */
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guint current_index_header_or_data;
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/* ISOBMFF box parsing */
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gboolean is_isobmff;
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struct {
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/* index = 1, header = 2, data = 3 */
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guint32 current_fourcc;
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guint64 current_start_offset;
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guint64 current_size;
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} isobmff_parser;
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GstMoofBox *moof;
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guint64 moof_offset, moof_size;
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GArray *moof_sync_samples;
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guint current_sync_sample;
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guint64 moof_average_size, first_sync_sample_average_size;
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gboolean first_sync_sample_after_moof, first_sync_sample_always_after_moof;
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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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GstAdaptiveDemux parent;
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GSList *next_periods;
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GstMpdClient *client; /* MPD client */
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GMutex client_lock;
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GstDashDemuxClockDrift *clock_drift;
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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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guint64 max_bitrate; /* max of bitrate supported by target decoder */
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gint max_video_width, max_video_height;
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gint max_video_framerate_n, max_video_framerate_d;
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gchar* default_presentation_delay; /* presentation time delay if MPD@suggestedPresentationDelay is not present */
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gint n_audio_streams;
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gint n_video_streams;
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gint n_subtitle_streams;
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gboolean trickmode_no_audio;
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gboolean allow_trickmode_key_units;
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};
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struct _GstDashDemuxClass
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{
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GstAdaptiveDemuxClass 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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