gstreamer/gst/subparse/gstsubparse.h
2020-03-16 15:47:58 +00:00

111 lines
3.2 KiB
C

/* GStreamer
* Copyright (C) <2002> David A. Schleef <ds@schleef.org>
* 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_SUBPARSE_H__
#define __GST_SUBPARSE_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
GST_DEBUG_CATEGORY_EXTERN (sub_parse_debug);
#define GST_CAT_DEFAULT sub_parse_debug
G_BEGIN_DECLS
#define GST_TYPE_SUBPARSE (gst_sub_parse_get_type ())
G_DECLARE_FINAL_TYPE (GstSubParse, gst_sub_parse, GST, SUBPARSE, GstElement)
/* format enum */
typedef enum
{
GST_SUB_PARSE_FORMAT_UNKNOWN = 0,
GST_SUB_PARSE_FORMAT_MDVDSUB = 1,
GST_SUB_PARSE_FORMAT_SUBRIP = 2,
GST_SUB_PARSE_FORMAT_MPSUB = 3,
GST_SUB_PARSE_FORMAT_SAMI = 4,
GST_SUB_PARSE_FORMAT_TMPLAYER = 5,
GST_SUB_PARSE_FORMAT_MPL2 = 6,
GST_SUB_PARSE_FORMAT_SUBVIEWER = 7,
GST_SUB_PARSE_FORMAT_DKS = 8,
GST_SUB_PARSE_FORMAT_QTTEXT = 9,
GST_SUB_PARSE_FORMAT_LRC = 10,
GST_SUB_PARSE_FORMAT_VTT = 11
} GstSubParseFormat;
typedef struct {
int state;
GString *buf;
guint64 start_time;
guint64 duration;
guint64 max_duration; /* to clamp duration, 0 = no limit (used by tmplayer parser) */
GstSegment *segment;
gpointer user_data;
gboolean have_internal_fps; /* If TRUE don't overwrite fps by property */
gint fps_n, fps_d; /* used by frame based parsers */
guint8 line_position; /* percent value */
gint line_number; /* line number, can be positive or negative */
guint8 text_position; /* percent value */
guint8 text_size; /* percent value */
gchar *vertical; /* "", "vertical", "vertical-lr" */
gchar *alignment; /* "", "start", "middle", "end" */
gconstpointer allowed_tags; /* list of markup tags allowed in the cue text. */
gboolean allows_tag_attributes;
} ParserState;
typedef gchar* (*Parser) (ParserState *state, const gchar *line);
struct _GstSubParse {
GstElement element;
GstPad *sinkpad,*srcpad;
/* contains the input in the input encoding */
GstAdapter *adapter;
/* contains the UTF-8 decoded input */
GString *textbuf;
GstSubParseFormat parser_type;
gboolean parser_detected;
const gchar *subtitle_codec;
Parser parse_line;
ParserState state;
/* seek */
guint64 offset;
/* Segment */
GstSegment segment;
gboolean need_segment;
gboolean flushing;
gboolean valid_utf8;
gchar *detected_encoding;
gchar *encoding;
gboolean first_buffer;
/* used by frame based parsers */
gint fps_n, fps_d;
};
G_END_DECLS
#endif /* __GST_SUBPARSE_H__ */