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* qatar/release/0.7: (65 commits) riff: Add mpgv MPEG-2 fourcc Update Changelog matroskadec: fix integer underflow if header length < probe length. ffmpeg: fix operation with --disable-avfilter vf_libopencv: replace opencv/cxtypes.h #include by opencv/cxcore.h build: Create mlib optimization directories during out-of-tree builds. changelog: misc typo and wording fixes (cherry picked from commitb047941d7d) doc: Remove outdated comments about gcc 2.95 and gcc 3.3 support. (cherry picked from commit5ccbf80963) matroskadec: matroska_read_seek after after EBML_STOP leads to failure. Update RELEASE file update Changelog mt: proper locking around release_buffer calls. vp8/mt: flush worker thread, not application thread context, on seek. docs: Mention the upstream bugzilla url about the dlltool vs MSVC issue docs: Use proper markup for a literal command line option docs: Don't recommend adding --enable-memalign-hack docs: Remove needless configure options oggdec: prevent heap corruption. oggdec: Abort Ogg header parsing when encountering a data packet. Add LGPL license boilerplate to files lacking it. ... Conflicts: Changelog configure doc/developer.texi libavcodec/libvpxenc.c libavcodec/rawdec.c libavfilter/x86/gradfun.c libavformat/Makefile libavformat/isom.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
/*
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* SSA/ASS common funtions
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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 ts_end end timestamp for this dialog (in 1/100 second unit)
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* @param raw when set to 1, it indicates that dialog contains a whole ASS
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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 ts_end, int raw);
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#endif /* AVCODEC_ASS_H */
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