mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 10:41:04 +00:00
138 lines
4.4 KiB
C
138 lines
4.4 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
|
|
/*
|
|
* libdvbsub - DVB subtitle decoding
|
|
* Copyright (C) Mart Raudsepp 2009 <mart.raudsepp@artecdesign.ee>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef _DVB_SUB_H_
|
|
#define _DVB_SUB_H_
|
|
|
|
#include <glib.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
typedef struct _DvbSub DvbSub;
|
|
|
|
/**
|
|
* DVBSubtitlePicture:
|
|
* @data: the data in the form of palette indices, each byte represents one pixel
|
|
* as an index into the @palette.
|
|
* @palette: the palette used for this subtitle rectangle, up to 256 items depending
|
|
* on the depth of the subpicture; each palette item is in ARGB form, 8-bits per channel.
|
|
* @palette_bits_count: the amount of bits used in indices into @palette in @data.
|
|
* @rowstride: the number of bytes between the start of a row and the start of the next row.
|
|
*
|
|
* A structure representing the contents of a subtitle rectangle.
|
|
*
|
|
* FIXME: Expose the depth of the palette, and perhaps also the height in this struct.
|
|
*/
|
|
typedef struct DVBSubtitlePicture {
|
|
guint8 *data;
|
|
guint32 *palette;
|
|
guint8 palette_bits_count;
|
|
int rowstride;
|
|
} DVBSubtitlePicture;
|
|
|
|
/**
|
|
* DVBSubtitleRect:
|
|
* @x: x coordinate of top left corner
|
|
* @y: y coordinate of top left corner
|
|
* @w: the width of this subpicture rectangle
|
|
* @h: the height of this subpicture rectangle
|
|
* @pict: the content of this subpicture rectangle
|
|
*
|
|
* A structure representing one subtitle objects position, dimension and content.
|
|
*/
|
|
typedef struct DVBSubtitleRect {
|
|
int x;
|
|
int y;
|
|
int w;
|
|
int h;
|
|
|
|
DVBSubtitlePicture pict;
|
|
} DVBSubtitleRect;
|
|
|
|
/**
|
|
* DVBSubtitleWindow
|
|
* @version: version
|
|
* @display_window_flag: window_* are valid
|
|
* @display_width: assumed width of display
|
|
* @display_height: assumed height of display
|
|
* @window_x: x coordinate of top left corner of the subtitle window
|
|
* @window_y: y coordinate of top left corner of the subtitle window
|
|
* @window_width: width of the subtitle window
|
|
* @window_height: height of the subtitle window
|
|
*
|
|
* A structure presenting display and window information
|
|
* display definition segment from ETSI EN 300 743 V1.3.1
|
|
*/
|
|
typedef struct DVBSubtitleWindow {
|
|
gint version;
|
|
gint window_flag;
|
|
|
|
gint display_width;
|
|
gint display_height;
|
|
|
|
gint window_x;
|
|
gint window_y;
|
|
gint window_width;
|
|
gint window_height;
|
|
} DVBSubtitleWindow;
|
|
|
|
/**
|
|
* DVBSubtitles:
|
|
* @num_rects: the number of #DVBSubtitleRect in @rects
|
|
* @rects: dynamic array of #DVBSubtitleRect
|
|
*
|
|
* A structure representing a set of subtitle objects.
|
|
*/
|
|
typedef struct DVBSubtitles {
|
|
guint64 pts;
|
|
guint8 page_time_out;
|
|
guint num_rects;
|
|
DVBSubtitleRect *rects;
|
|
DVBSubtitleWindow display_def;
|
|
} DVBSubtitles;
|
|
|
|
/**
|
|
* DvbSubCallbacks:
|
|
* @new_data: called when new subpicture data is available for display. @dvb_sub
|
|
* is the #DvbSub instance this callback originates from; @subs is the set of
|
|
* subtitle objects that should be display for no more than @page_time_out
|
|
* seconds at @pts; @user_data is the same user_data as was passed through
|
|
* dvb_sub_set_callbacks(); The callback handler is responsible for eventually
|
|
* cleaning up the subpicture data @subs with a call to dvb_subtitles_free()
|
|
*
|
|
* A set of callbacks that can be installed on the #DvbSub with
|
|
* dvb_sub_set_callbacks().
|
|
*/
|
|
typedef struct {
|
|
void (*new_data) (DvbSub *dvb_sub, DVBSubtitles * subs, gpointer user_data);
|
|
/*< private >*/
|
|
gpointer _dvb_sub_reserved[3];
|
|
} DvbSubCallbacks;
|
|
|
|
DvbSub *dvb_sub_new (void);
|
|
void dvb_sub_free (DvbSub * sub);
|
|
|
|
gint dvb_sub_feed_with_pts (DvbSub *dvb_sub, guint64 pts, guint8 *data, gint len);
|
|
void dvb_sub_set_callbacks (DvbSub *dvb_sub, DvbSubCallbacks *callbacks, gpointer user_data);
|
|
void dvb_subtitles_free (DVBSubtitles *sub);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* _DVB_SUB_H_ */
|