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93 lines
3.6 KiB
93 lines
3.6 KiB
/* |
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* SSA/ASS common functions |
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* Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_ASS_H |
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#define AVCODEC_ASS_H |
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#include "avcodec.h" |
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/** |
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* @name Default values for ASS style |
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* @{ |
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*/ |
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#define ASS_DEFAULT_FONT "Arial" |
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#define ASS_DEFAULT_FONT_SIZE 16 |
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#define ASS_DEFAULT_COLOR 0xffffff |
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#define ASS_DEFAULT_BACK_COLOR 0 |
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#define ASS_DEFAULT_BOLD 0 |
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#define ASS_DEFAULT_ITALIC 0 |
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#define ASS_DEFAULT_UNDERLINE 0 |
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#define ASS_DEFAULT_ALIGNMENT 2 |
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/** @} */ |
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/** |
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* Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS. |
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* |
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* @param avctx pointer to the AVCodecContext |
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* @param font name of the default font face to use |
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* @param font_size default font size to use |
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* @param color default text color to use (ABGR) |
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* @param back_color default background color to use (ABGR) |
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* @param bold 1 for bold text, 0 for normal text |
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* @param italic 1 for italic text, 0 for normal text |
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* @param underline 1 for underline text, 0 for normal text |
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* @param alignment position of the text (left, center, top...), defined after |
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* the layout of the numpad (1-3 sub, 4-6 mid, 7-9 top) |
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* @return >= 0 on success otherwise an error code <0 |
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*/ |
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int ff_ass_subtitle_header(AVCodecContext *avctx, |
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const char *font, int font_size, |
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int color, int back_color, |
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int bold, int italic, int underline, |
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int alignment); |
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/** |
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* Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS |
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* with default style. |
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* |
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* @param avctx pointer to the AVCodecContext |
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* @return >= 0 on success otherwise an error code <0 |
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*/ |
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int ff_ass_subtitle_header_default(AVCodecContext *avctx); |
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/** |
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* Add an ASS dialog line to an AVSubtitle as a new AVSubtitleRect. |
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* |
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* @param sub pointer to the AVSubtitle |
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* @param dialog ASS dialog to add to sub |
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* @param ts_start start timestamp for this dialog (in 1/100 second unit) |
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* @param duration duration for this dialog (in 1/100 second unit), can be -1 |
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* to last until the end of the presentation |
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* @param raw when set to 2, it indicates that dialog contains an ASS |
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* dialog line as muxed in Matroska |
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* when set to 1, it indicates that dialog contains a whole SSA |
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* dialog line which should be copied as is. |
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* when set to 0, it indicates that dialog contains only the Text |
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* part of the ASS dialog line, the rest of the line |
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* will be generated. |
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* @return number of characters read from dialog. It can be less than the whole |
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* length of dialog, if dialog contains several lines of text. |
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* A negative value indicates an error. |
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*/ |
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int ff_ass_add_rect(AVSubtitle *sub, const char *dialog, |
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int ts_start, int duration, int raw); |
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#endif /* AVCODEC_ASS_H */
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