gstreamer/gst/matroska/matroska-read-common.h

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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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_MATROSKA_READ_COMMON_H__
#define __GST_MATROSKA_READ_COMMON_H__
#include <glib.h>
#include <gst/gst.h>
#include "matroska-ids.h"
G_BEGIN_DECLS
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 {
GstIndex *element_index;
gint element_index_writer_id;
/* pads */
GstPad *sinkpad;
GPtrArray *src;
guint num_streams;
/* state */
GstMatroskaReadState state;
/* did we parse cues/tracks/segmentinfo already? */
gboolean index_parsed;
/* start-of-segment */
guint64 ebml_segment_start;
/* a cue (index) table */
GArray *index;
/* timescale in the file */
guint64 time_scale;
/* pull mode caching */
GstBuffer *cached_buffer;
/* push and pull mode */
guint64 offset;
} GstMatroskaReadCommon;
GstFlowReturn gst_matroska_decode_content_encodings (GArray * encodings);
gboolean gst_matroska_decompress_data (GstMatroskaTrackEncoding * enc,
guint8 ** data_out, guint * size_out,
GstMatroskaTrackCompressionAlgorithm algo);
GstFlowReturn gst_matroska_read_common_parse_index (GstMatroskaReadCommon *
common, 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);
const guint8 * gst_matroska_read_common_peek_pull (GstMatroskaReadCommon *
common, guint peek);
gint gst_matroska_read_common_stream_from_num (GstMatroskaReadCommon * common,
guint track_num);
GstFlowReturn gst_matroska_read_common_read_track_encoding (
GstMatroskaReadCommon * common, GstEbmlRead * ebml,
GstMatroskaTrackContext * context);
G_END_DECLS
#endif /* __GST_MATROSKA_READ_COMMON_H__ */