gstreamer/gst/isomp4/qtdemux.h
Thiago Santos 33cf8b679d qtdemux: preserve stop of segment when doing seeks in push mode
When handling seeks in push mode, qtdemux converts the seek to bytes
and pushes upstream. It needs to keep track of the seek and the
subsequent segment to be able to map them back to the requested
seek time and properly preserve the segment stop of the seek.

This is done by using the start offset in bytes of the seek,
that should be the same of the segment from upstream. And this
is also backwards compatible with what qtdemux already was using.

https://bugzilla.gnome.org/show_bug.cgi?id=707530
2013-09-10 16:42:36 -03:00

141 lines
3.5 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#ifndef __GST_QTDEMUX_H__
#define __GST_QTDEMUX_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
GST_DEBUG_CATEGORY_EXTERN (qtdemux_debug);
#define GST_CAT_DEFAULT qtdemux_debug
#define GST_TYPE_QTDEMUX \
(gst_qtdemux_get_type())
#define GST_QTDEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QTDEMUX,GstQTDemux))
#define GST_QTDEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QTDEMUX,GstQTDemuxClass))
#define GST_IS_QTDEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QTDEMUX))
#define GST_IS_QTDEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QTDEMUX))
#define GST_QTDEMUX_CAST(obj) ((GstQTDemux *)(obj))
/* qtdemux produces these for atoms it cannot parse */
#define GST_QT_DEMUX_PRIVATE_TAG "private-qt-tag"
#define GST_QT_DEMUX_CLASSIFICATION_TAG "classification"
#define GST_QTDEMUX_MAX_STREAMS 32
typedef struct _GstQTDemux GstQTDemux;
typedef struct _GstQTDemuxClass GstQTDemuxClass;
typedef struct _QtDemuxStream QtDemuxStream;
struct _GstQTDemux {
GstElement element;
/* pads */
GstPad *sinkpad;
QtDemuxStream *streams[GST_QTDEMUX_MAX_STREAMS];
gint n_streams;
gint n_video_streams;
gint n_audio_streams;
gint n_sub_streams;
gboolean have_group_id;
guint group_id;
guint major_brand;
GstBuffer *comp_brands;
GNode *moov_node;
GNode *moov_node_compressed;
guint32 timescale;
guint64 duration;
gboolean fragmented;
/* offset of the mfra atom */
guint64 mfra_offset;
guint64 moof_offset;
gint state;
gboolean pullbased;
gboolean posted_redirect;
/* push based variables */
guint neededbytes;
guint todrop;
GstAdapter *adapter;
GstBuffer *mdatbuffer;
guint64 mdatleft;
guint64 offset;
/* offset of the mdat atom */
guint64 mdatoffset;
guint64 first_mdat;
gboolean got_moov;
guint header_size;
GstTagList *tag_list;
/* configured playback region */
GstSegment segment;
GstEvent *pending_newsegment;
gboolean upstream_newsegment;
gint64 seek_offset;
gint64 push_seek_start;
gint64 push_seek_stop;
#if 0
/* gst index support */
GstIndex *element_index;
gint index_id;
#endif
gboolean upstream_seekable;
gint64 upstream_size;
/* MSS streams have a single media that is unspecified at the atoms, so
* upstream provides it at the caps */
GstCaps *media_caps;
gboolean exposed;
gboolean mss_mode; /* flag to indicate that we're working with a smoothstreaming fragment */
guint64 fragment_start;
gint64 chapters_track_id;
GstClockTime min_elst_offset;
};
struct _GstQTDemuxClass {
GstElementClass parent_class;
};
GType gst_qtdemux_get_type (void);
G_END_DECLS
#endif /* __GST_QTDEMUX_H__ */