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90a5565229
Make sure empty segments are used and pushed with a gap event to represent its data (or lack of it) Each QtSegment is mapped into a GstSegment with the corresponding media range. For empty QtSegments a gap event is pushed instead of GstBuffers and it advances to the next QtSegment. To make this work with seeks, need to keep track of the starting 'base' to make sure it remains consistently increasing when pushing new segment events. For example: if a seek makes qtdemux start from 5s, the first segment will have a base=0. When the next segment is activated, its base time will be QtSegment.time - qtdemux.segment_base so that it doesn't include the first 5s that weren't played and shouldn't be accounted on the running time This purposedly will remove the fix made for https://bugzilla.gnome.org/show_bug.cgi?id=700264, at this point it was decided to respect the gaps, even if they cause a delay on playback, because that's the way the file was crafted. https://bugzilla.gnome.org/show_bug.cgi?id=345830
160 lines
4.6 KiB
C
160 lines
4.6 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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 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; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_QTDEMUX_H__
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#define __GST_QTDEMUX_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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G_BEGIN_DECLS
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GST_DEBUG_CATEGORY_EXTERN (qtdemux_debug);
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#define GST_CAT_DEFAULT qtdemux_debug
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#define GST_TYPE_QTDEMUX \
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(gst_qtdemux_get_type())
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#define GST_QTDEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QTDEMUX,GstQTDemux))
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#define GST_QTDEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QTDEMUX,GstQTDemuxClass))
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#define GST_IS_QTDEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QTDEMUX))
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#define GST_IS_QTDEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QTDEMUX))
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#define GST_QTDEMUX_CAST(obj) ((GstQTDemux *)(obj))
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/* qtdemux produces these for atoms it cannot parse */
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#define GST_QT_DEMUX_PRIVATE_TAG "private-qt-tag"
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#define GST_QT_DEMUX_CLASSIFICATION_TAG "classification"
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#define GST_QTDEMUX_MAX_STREAMS 32
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typedef struct _GstQTDemux GstQTDemux;
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typedef struct _GstQTDemuxClass GstQTDemuxClass;
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typedef struct _QtDemuxStream QtDemuxStream;
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struct _GstQTDemux {
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GstElement element;
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/* pads */
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GstPad *sinkpad;
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QtDemuxStream *streams[GST_QTDEMUX_MAX_STREAMS];
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gint n_streams;
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gint n_video_streams;
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gint n_audio_streams;
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gint n_sub_streams;
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gboolean have_group_id;
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guint group_id;
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guint major_brand;
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GstBuffer *comp_brands;
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GNode *moov_node;
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GNode *moov_node_compressed;
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guint32 timescale;
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guint64 duration;
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gboolean fragmented;
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/* offset of the mfra atom */
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guint64 mfra_offset;
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guint64 moof_offset;
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gint state;
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gboolean pullbased;
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gboolean posted_redirect;
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/* push based variables */
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guint neededbytes;
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guint todrop;
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GstAdapter *adapter;
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GstBuffer *mdatbuffer;
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guint64 mdatleft;
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/* When restoring the mdat to the adatpter, this buffer
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* stores any trailing data that was after the last atom parsed as it
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* has to be restored later along with the correct offset. Used in
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* fragmented scenario where mdat/moof are one after the other
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* in any order.
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*
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* Check https://bugzilla.gnome.org/show_bug.cgi?id=710623 */
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GstBuffer *restoredata_buffer;
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guint64 restoredata_offset;
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guint64 offset;
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/* offset of the mdat atom */
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guint64 mdatoffset;
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guint64 first_mdat;
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gboolean got_moov;
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guint64 last_moov_offset;
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guint header_size;
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GstTagList *tag_list;
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/* configured playback region */
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GstSegment segment;
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GstEvent *pending_newsegment;
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gboolean upstream_newsegment; /* qtdemux received upstream
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* newsegment in TIME format which likely
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* means that upstream is driving the pipeline
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* (adaptive demuxers) */
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gint64 seek_offset;
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gint64 push_seek_start;
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gint64 push_seek_stop;
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guint64 segment_base; /* The offset from which playback was started, needs to
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* be subtracted from GstSegment.base to get a correct
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* running time whenever a new QtSegment is activated */
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#if 0
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/* gst index support */
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GstIndex *element_index;
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gint index_id;
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#endif
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gboolean upstream_seekable;
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gint64 upstream_size;
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/* MSS streams have a single media that is unspecified at the atoms, so
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* upstream provides it at the caps */
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GstCaps *media_caps;
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gboolean exposed;
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gboolean mss_mode; /* flag to indicate that we're working with a smoothstreaming fragment
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* Mss doesn't have 'moov' or any information about the streams format,
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* requiring qtdemux to expose and create the streams */
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guint64 fragment_start;
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guint64 fragment_start_offset;
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gint64 chapters_track_id;
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GstClockTime min_elst_offset;
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};
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struct _GstQTDemuxClass {
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GstElementClass parent_class;
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};
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GType gst_qtdemux_get_type (void);
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G_END_DECLS
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#endif /* __GST_QTDEMUX_H__ */
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