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https://github.com/mpv-player/mpv
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7a76b577d8
This is more or less a minimal hack to make _some_ text measurement functionality available to scripts. Since libass does not support such a thing, this simply uses the bounding box of the rendered text. This is far from ideal. Problems include: - using a bitmap bounding box - additional memory waste and/or flushing caches - dependency on window size - odd small deviations with different window sizes (run osd-test.lua and resize the window after each timer update; the bounding boxes aren't adjusted in an overly useful way) - inability to query the size _after_ actual rendering But I guess it's a start. Since I'm aware that it's crap, add a threat to the manpage that this may be changed/removed again. For now, I'm interested whether anyone will have use for it in its current form, as it's an often requested feature.
62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/*
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* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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
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* GNU 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 mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MPLAYER_ASS_MP_H
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#define MPLAYER_ASS_MP_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <ass/ass.h>
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#include <ass/ass_types.h>
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// This is probably arbitrary.
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// sd_lavc_conv might indirectly still assume this PlayResY, though.
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#define MP_ASS_FONT_PLAYRESY 288
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#define MP_ASS_RGBA(r, g, b, a) \
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(((unsigned)(r) << 24) | ((g) << 16) | ((b) << 8) | (0xFF - (a)))
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// m_color argument
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#define MP_ASS_COLOR(c) MP_ASS_RGBA((c).r, (c).g, (c).b, (c).a)
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struct MPOpts;
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struct mpv_global;
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struct mp_osd_res;
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struct osd_style_opts;
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void mp_ass_flush_old_events(ASS_Track *track, long long ts);
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void mp_ass_set_style(ASS_Style *style, double res_y,
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const struct osd_style_opts *opts);
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void mp_ass_configure_fonts(ASS_Renderer *priv, struct osd_style_opts *opts,
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struct mpv_global *global, struct mp_log *log);
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ASS_Library *mp_ass_init(struct mpv_global *global, struct mp_log *log);
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struct sub_bitmaps;
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struct mp_ass_packer;
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struct mp_ass_packer *mp_ass_packer_alloc(void *ta_parent);
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void mp_ass_packer_pack(struct mp_ass_packer *p, ASS_Image **image_lists,
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int num_image_lists, bool changed,
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int preferred_osd_format, struct sub_bitmaps *out);
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void mp_ass_get_bb(ASS_Image *image_list, ASS_Track *track,
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struct mp_osd_res *res, double *out_rc);
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#endif /* MPLAYER_ASS_MP_H */
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