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