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cced65ee21
This takes the timestamp of the earliest stream and offsets it so that it starts at 0. Some software (VLC, ffmpeg-based) does not properly handle Matroska files that start at timestamps much bigger than zero. Closes https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/issues/449
156 lines
4.3 KiB
C
156 lines
4.3 KiB
C
/* GStreamer Matroska muxer/demuxer
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* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* (c) 2005 Michal Benes <michal.benes@xeris.cz>
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*
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* matroska-mux.h: matroska file/stream muxer object types
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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_MATROSKA_MUX_H__
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#define __GST_MATROSKA_MUX_H__
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads.h>
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#include "ebml-write.h"
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#include "matroska-ids.h"
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G_BEGIN_DECLS
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#define GST_TYPE_MATROSKA_MUX \
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(gst_matroska_mux_get_type ())
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#define GST_MATROSKA_MUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_MATROSKA_MUX, GstMatroskaMux))
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#define GST_MATROSKA_MUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_MATROSKA_MUX, GstMatroskaMuxClass))
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#define GST_IS_MATROSKA_MUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_MATROSKA_MUX))
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#define GST_IS_MATROSKA_MUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_MATROSKA_MUX))
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typedef enum {
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GST_MATROSKA_MUX_STATE_START,
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GST_MATROSKA_MUX_STATE_HEADER,
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GST_MATROSKA_MUX_STATE_DATA,
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} GstMatroskaMuxState;
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typedef struct _GstMatroskaMetaSeekIndex {
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guint32 id;
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guint64 pos;
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} GstMatroskaMetaSeekIndex;
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typedef gboolean (*GstMatroskaCapsFunc) (GstPad *pad, GstCaps *caps);
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typedef struct _GstMatroskaMux GstMatroskaMux;
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/* all information needed for one matroska stream */
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typedef struct
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{
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GstCollectData collect; /* we extend the CollectData */
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GstMatroskaCapsFunc capsfunc;
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GstMatroskaTrackContext *track;
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GstMatroskaMux *mux;
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GstTagList *tags;
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GstClockTime start_ts;
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GstClockTime end_ts; /* last timestamp + (if available) duration */
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guint64 default_duration_scaled;
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}
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GstMatroskaPad;
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struct _GstMatroskaMux {
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GstElement element;
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/* < private > */
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/* pads */
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GstPad *srcpad;
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GstCollectPads *collect;
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GstEbmlWrite *ebml_write;
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guint num_streams,
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num_v_streams, num_a_streams, num_t_streams;
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/* Application name (for the writing application header element) */
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gchar *writing_app;
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/* EBML DocType. */
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const gchar *doctype;
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/* DocType version. */
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guint doctype_version;
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/* state */
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GstMatroskaMuxState state;
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/* a cue (index) table */
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GstMatroskaIndex *index;
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guint num_indexes;
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GstClockTimeDiff min_index_interval;
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/* timescale in the file */
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guint64 time_scale;
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/* minimum and maximum limit of nanoseconds you can have in a cluster */
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guint64 max_cluster_duration;
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guint64 min_cluster_duration;
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/* earliest timestamp (time, ns) if offsetting to zero */
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gboolean offset_to_zero;
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guint64 earliest_time;
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/* length, position (time, ns) */
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guint64 duration;
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/* byte-positions of master-elements (for replacing contents) */
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guint64 segment_pos,
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seekhead_pos,
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cues_pos,
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chapters_pos,
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tags_pos,
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info_pos,
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tracks_pos,
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duration_pos,
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meta_pos;
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guint64 segment_master;
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/* current cluster */
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guint64 cluster,
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cluster_time,
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cluster_pos,
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prev_cluster_size;
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/* GstForceKeyUnit event */
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GstEvent *force_key_unit_event;
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/* Internal Toc (adjusted UIDs and title tags removed when processed) */
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GstToc *internal_toc;
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/* Flag to ease handling of WebM specifics */
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gboolean is_webm;
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};
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typedef struct _GstMatroskaMuxClass {
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GstElementClass parent;
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} GstMatroskaMuxClass;
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GType gst_matroska_mux_get_type (void);
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G_END_DECLS
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#endif /* __GST_MATROSKA_MUX_H__ */
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