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/* GStreamer Matroska muxer/demuxer
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* (c) 2011 Debarshi Ray <rishi@gnu.org>
*
* matroska-read-common.h: shared by matroska file/stream demuxer and parser
*
* 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_MATROSKA_READ_COMMON_H__
#define __GST_MATROSKA_READ_COMMON_H__
#include <glib.h>
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include "matroska-ids.h"
G_BEGIN_DECLS
GST_DEBUG_CATEGORY_EXTERN(matroskareadcommon_debug);
typedef enum {
GST_MATROSKA_READ_STATE_START,
GST_MATROSKA_READ_STATE_SEGMENT,
GST_MATROSKA_READ_STATE_HEADER,
GST_MATROSKA_READ_STATE_DATA,
GST_MATROSKA_READ_STATE_SEEK,
GST_MATROSKA_READ_STATE_SCANNING
} GstMatroskaReadState;
typedef struct _GstMatroskaReadCommon {
#if 0
GstIndex *element_index;
gint element_index_writer_id;
#endif
/* pads */
GstPad *sinkpad;
GPtrArray *src;
guint num_streams;
/* metadata */
gchar *muxing_app;
gchar *writing_app;
gint64 created;
/* state */
GstMatroskaReadState state;
/* stream type */
gboolean is_webm;
gboolean has_video;
/* did we parse cues/tracks/segmentinfo already? */
gboolean index_parsed;
gboolean segmentinfo_parsed;
gboolean attachments_parsed;
gboolean chapters_parsed;
GList *tags_parsed;
/* chapters stuff */
GstToc *toc;
gboolean toc_updated;
/* start-of-segment and length */
guint64 ebml_segment_start;
guint64 ebml_segment_length;
/* a cue (index) table */
GArray *index;
/* timescale in the file */
guint64 time_scale;
/* keeping track of playback position */
GstSegment segment;
GstTagList *global_tags;
/* pull mode caching */
GstBuffer *cached_buffer;
guint8 *cached_data;
GstMapInfo cached_map;
/* push and pull mode */
guint64 offset;
/* push based mode usual suspects */
GstAdapter *adapter;
} GstMatroskaReadCommon;
GstFlowReturn gst_matroska_decode_content_encodings (GArray * encodings);
gboolean gst_matroska_decode_data (GArray * encodings, gpointer * data_out,
gsize * size_out, GstMatroskaTrackEncodingScope scope, gboolean free);
gint gst_matroska_index_seek_find (GstMatroskaIndex * i1, GstClockTime * time,
gpointer user_data);
GstMatroskaIndex * gst_matroska_read_common_do_index_seek (
GstMatroskaReadCommon * common, GstMatroskaTrackContext * track, gint64
seek_pos, GArray ** _index, gint * _entry_index, GstSearchMode snap_dir);
void gst_matroska_read_common_found_global_tag (GstMatroskaReadCommon * common,
GstElement * el, GstTagList * taglist);
gint64 gst_matroska_read_common_get_length (GstMatroskaReadCommon * common);
GstMatroskaTrackContext * gst_matroska_read_common_get_seek_track (
GstMatroskaReadCommon * common, GstMatroskaTrackContext * track);
GstFlowReturn gst_matroska_read_common_parse_index (GstMatroskaReadCommon *
common, GstEbmlRead * ebml);
GstFlowReturn gst_matroska_read_common_parse_info (GstMatroskaReadCommon *
common, GstElement * el, GstEbmlRead * ebml);
GstFlowReturn gst_matroska_read_common_parse_attachments (
GstMatroskaReadCommon * common, GstElement * el, GstEbmlRead * ebml);
GstFlowReturn gst_matroska_read_common_parse_chapters (GstMatroskaReadCommon *
common, GstEbmlRead * ebml);
GstFlowReturn gst_matroska_read_common_parse_header (GstMatroskaReadCommon *
common, GstEbmlRead * ebml);
GstFlowReturn gst_matroska_read_common_parse_metadata (GstMatroskaReadCommon *
common, GstElement * el, GstEbmlRead * ebml);
GstFlowReturn gst_matroska_read_common_parse_skip (GstMatroskaReadCommon *
common, GstEbmlRead * ebml, const gchar * parent_name, guint id);
GstFlowReturn gst_matroska_read_common_peek_bytes (GstMatroskaReadCommon *
common, guint64 offset, guint size, GstBuffer ** p_buf, guint8 ** bytes);
GstFlowReturn gst_matroska_read_common_peek_id_length_pull (GstMatroskaReadCommon *
common, GstElement * el, guint32 * _id, guint64 * _length, guint *
_needed);
GstFlowReturn gst_matroska_read_common_peek_id_length_push (GstMatroskaReadCommon *
common, GstElement * el, guint32 * _id, guint64 * _length, guint *
_needed);
gint gst_matroska_read_common_stream_from_num (GstMatroskaReadCommon * common,
guint track_num);
GstFlowReturn gst_matroska_read_common_read_track_encodings (
GstMatroskaReadCommon * common, GstEbmlRead * ebml,
GstMatroskaTrackContext * context);
void gst_matroska_read_common_reset_streams (GstMatroskaReadCommon * common,
GstClockTime time, gboolean full);
void gst_matroska_read_common_free_parsed_el (gpointer mem, gpointer user_data);
void gst_matroska_read_common_init (GstMatroskaReadCommon * ctx);
void gst_matroska_read_common_finalize (GstMatroskaReadCommon * ctx);
void gst_matroska_read_common_reset (GstElement * element,
GstMatroskaReadCommon * ctx);
gboolean gst_matroska_read_common_tracknumber_unique (GstMatroskaReadCommon *
common, guint64 num);
G_END_DECLS
#endif /* __GST_MATROSKA_READ_COMMON_H__ */
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