/* * SSA/ASS common funtions * Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org> * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; 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 * 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); /** * Initialize an AVSubtitle structure for use with ff_ass_add_rect(). * * @param sub pointer to the AVSubtitle */ void ff_ass_init(AVSubtitle *sub); /** * 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 ts_end end timestamp for this dialog (in 1/100 second unit) * @param raw when set to 1, it indicates that dialog contains a whole ASS * 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 ts_end, int raw); #endif /* AVCODEC_ASS_H */