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mpv/sub/ass_mp.h
wm4 485d033b5f sub: fix undefined behavior in ASS color calculation
This might shift bits into the sign, which is undefined behavior. Making
the right operand unsigned was supposed to help with this, but it seems
it did nothing, and C99 makes the result type dependent on the left
operand only.
2014-05-10 10:44:16 +02:00

69 lines
2.3 KiB
C

/*
* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with libass; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_ASS_MP_H
#define MPLAYER_ASS_MP_H
#include <stdint.h>
#include <stdbool.h>
#include "config.h"
// This is probably arbitrary.
// sd_lavc_conv might indirectly still assume this PlayResY, though.
#define MP_ASS_FONT_PLAYRESY 288
#define MP_ASS_RGBA(r, g, b, a) \
(((unsigned)(r) << 24) | ((g) << 16) | ((b) << 8) | (0xFF - (a)))
// m_color argument
#define MP_ASS_COLOR(c) MP_ASS_RGBA((c).r, (c).g, (c).b, (c).a)
#if HAVE_LIBASS
#include <ass/ass.h>
#include <ass/ass_types.h>
struct MPOpts;
struct mpv_global;
struct mp_osd_res;
struct osd_style_opts;
void mp_ass_set_style(ASS_Style *style, double res_y,
const struct osd_style_opts *opts);
void mp_ass_add_default_styles(ASS_Track *track, struct MPOpts *opts);
ASS_Track *mp_ass_default_track(ASS_Library *library, struct MPOpts *opts);
struct MPOpts;
void mp_ass_configure(ASS_Renderer *priv, struct MPOpts *opts,
struct mp_osd_res *dim);
void mp_ass_configure_fonts(ASS_Renderer *priv, struct osd_style_opts *opts,
struct mpv_global *global, struct mp_log *log);
ASS_Library *mp_ass_init(struct mpv_global *global, struct mp_log *log);
struct sub_bitmap;
struct sub_bitmaps;
void mp_ass_render_frame(ASS_Renderer *renderer, ASS_Track *track, double time,
struct sub_bitmap **parts, struct sub_bitmaps *res);
#endif /* HAVE_LIBASS */
#endif /* MPLAYER_ASS_MP_H */