forked from KolibriOS/kolibrios
94 lines
3.6 KiB
C
94 lines
3.6 KiB
C
/*
|
|
* SSA/ASS common functions
|
|
* Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_ASS_H
|
|
#define AVCODEC_ASS_H
|
|
|
|
#include "avcodec.h"
|
|
|
|
/**
|
|
* @name Default values for ASS style
|
|
* @{
|
|
*/
|
|
#define ASS_DEFAULT_FONT "Arial"
|
|
#define ASS_DEFAULT_FONT_SIZE 16
|
|
#define ASS_DEFAULT_COLOR 0xffffff
|
|
#define ASS_DEFAULT_BACK_COLOR 0
|
|
#define ASS_DEFAULT_BOLD 0
|
|
#define ASS_DEFAULT_ITALIC 0
|
|
#define ASS_DEFAULT_UNDERLINE 0
|
|
#define ASS_DEFAULT_ALIGNMENT 2
|
|
/** @} */
|
|
|
|
/**
|
|
* Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS.
|
|
*
|
|
* @param avctx pointer to the AVCodecContext
|
|
* @param font name of the default font face to use
|
|
* @param font_size default font size to use
|
|
* @param color default text color to use (ABGR)
|
|
* @param back_color default background color to use (ABGR)
|
|
* @param bold 1 for bold text, 0 for normal text
|
|
* @param italic 1 for italic text, 0 for normal text
|
|
* @param underline 1 for underline text, 0 for normal text
|
|
* @param alignment position of the text (left, center, top...), defined after
|
|
* the layout of the numpad (1-3 sub, 4-6 mid, 7-9 top)
|
|
* @return >= 0 on success otherwise an error code <0
|
|
*/
|
|
int ff_ass_subtitle_header(AVCodecContext *avctx,
|
|
const char *font, int font_size,
|
|
int color, int back_color,
|
|
int bold, int italic, int underline,
|
|
int alignment);
|
|
|
|
/**
|
|
* Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS
|
|
* with default style.
|
|
*
|
|
* @param avctx pointer to the AVCodecContext
|
|
* @return >= 0 on success otherwise an error code <0
|
|
*/
|
|
int ff_ass_subtitle_header_default(AVCodecContext *avctx);
|
|
|
|
/**
|
|
* Add an ASS dialog line to an AVSubtitle as a new AVSubtitleRect.
|
|
*
|
|
* @param sub pointer to the AVSubtitle
|
|
* @param dialog ASS dialog to add to sub
|
|
* @param ts_start start timestamp for this dialog (in 1/100 second unit)
|
|
* @param duration duration for this dialog (in 1/100 second unit), can be -1
|
|
* to last until the end of the presentation
|
|
* @param raw when set to 2, it indicates that dialog contains an ASS
|
|
* dialog line as muxed in Matroska
|
|
* when set to 1, it indicates that dialog contains a whole SSA
|
|
* dialog line which should be copied as is.
|
|
* when set to 0, it indicates that dialog contains only the Text
|
|
* part of the ASS dialog line, the rest of the line
|
|
* will be generated.
|
|
* @return number of characters read from dialog. It can be less than the whole
|
|
* length of dialog, if dialog contains several lines of text.
|
|
* A negative value indicates an error.
|
|
*/
|
|
int ff_ass_add_rect(AVSubtitle *sub, const char *dialog,
|
|
int ts_start, int duration, int raw);
|
|
|
|
#endif /* AVCODEC_ASS_H */
|