mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
112 lines
3.7 KiB
C
112 lines
3.7 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"
|
|
#include "libavutil/bprint.h"
|
|
|
|
#define ASS_DEFAULT_PLAYRESX 384
|
|
#define ASS_DEFAULT_PLAYRESY 288
|
|
|
|
/**
|
|
* @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
|
|
#define ASS_DEFAULT_BORDERSTYLE 1
|
|
/** @} */
|
|
|
|
typedef struct FFASSDecoderContext {
|
|
int readorder;
|
|
} FFASSDecoderContext;
|
|
|
|
/**
|
|
* 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 border_style, 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);
|
|
|
|
/**
|
|
* Craft an ASS dialog string.
|
|
*/
|
|
char *ff_ass_get_dialog(int readorder, int layer, const char *style,
|
|
const char *speaker, const char *text);
|
|
|
|
/**
|
|
* Add an ASS dialog to a subtitle.
|
|
*/
|
|
int ff_ass_add_rect(AVSubtitle *sub, const char *dialog,
|
|
int readorder, int layer, const char *style,
|
|
const char *speaker);
|
|
|
|
/**
|
|
* Helper to flush a text subtitles decoder making use of the
|
|
* FFASSDecoderContext.
|
|
*/
|
|
void ff_ass_decoder_flush(AVCodecContext *avctx);
|
|
|
|
/**
|
|
* Escape a text subtitle using ASS syntax into an AVBPrint buffer.
|
|
* Newline characters will be escaped to \N.
|
|
*
|
|
* @param buf pointer to an initialized AVBPrint buffer
|
|
* @param p source text
|
|
* @param size size of the source text
|
|
* @param linebreaks additional newline chars, which will be escaped to \N
|
|
* @param keep_ass_markup braces and backslash will not be escaped if set
|
|
*/
|
|
void ff_ass_bprint_text_event(AVBPrint *buf, const char *p, int size,
|
|
const char *linebreaks, int keep_ass_markup);
|
|
#endif /* AVCODEC_ASS_H */
|