mirror of
https://github.com/mpv-player/mpv
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8f8d524112
This will print compiler warnings about unused variables with older libass versions, but that's harmless.
259 lines
8.3 KiB
C
259 lines
8.3 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 MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with libass; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <inttypes.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdarg.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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#include "common/common.h"
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#include "common/global.h"
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#include "common/msg.h"
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#include "options/path.h"
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#include "ass_mp.h"
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#include "osd.h"
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#include "stream/stream.h"
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#include "options/options.h"
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// res_y should be track->PlayResY
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// It determines scaling of font sizes and more.
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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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{
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if (opts->font) {
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if (!style->FontName || strcmp(style->FontName, opts->font) != 0) {
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free(style->FontName);
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style->FontName = strdup(opts->font);
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style->treat_fontname_as_pattern = 1;
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}
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}
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// libass_font_size = FontSize * (window_height / res_y)
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// scale translates parameters from PlayResY=720 to res_y
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double scale = res_y / 720.0;
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style->FontSize = opts->font_size * scale;
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style->PrimaryColour = MP_ASS_COLOR(opts->color);
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style->SecondaryColour = style->PrimaryColour;
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#if LIBASS_VERSION >= 0x01102001
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style->OutlineColour = MP_ASS_COLOR(opts->border_color);
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if (opts->back_color.a) {
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style->BackColour = MP_ASS_COLOR(opts->back_color);
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style->BorderStyle = 4; // opaque box
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} else {
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style->BackColour = MP_ASS_COLOR(opts->shadow_color);
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style->BorderStyle = 1; // outline
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}
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#else
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if (opts->back_color.a) {
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style->OutlineColour = MP_ASS_COLOR(opts->back_color);
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style->BorderStyle = 3; // opaque box
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} else {
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style->OutlineColour = MP_ASS_COLOR(opts->border_color);
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style->BorderStyle = 1; // outline
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}
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style->BackColour = MP_ASS_COLOR(opts->shadow_color);
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#endif
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style->Outline = opts->border_size * scale;
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style->Shadow = opts->shadow_offset * scale;
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style->Spacing = opts->spacing * scale;
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style->MarginL = opts->margin_x * scale;
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style->MarginR = style->MarginL;
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style->MarginV = opts->margin_y * scale;
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style->ScaleX = 1.;
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style->ScaleY = 1.;
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#if LIBASS_VERSION >= 0x01020000
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style->Blur = opts->blur;
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#endif
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}
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// Add default styles, if the track does not have any styles yet.
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// Apply style overrides if the user provides any.
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void mp_ass_add_default_styles(ASS_Track *track, struct MPOpts *opts)
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{
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if (opts->ass_styles_file && opts->ass_style_override)
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ass_read_styles(track, opts->ass_styles_file, NULL);
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if (track->n_styles == 0) {
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if (!track->PlayResY) {
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track->PlayResY = MP_ASS_FONT_PLAYRESY;
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track->PlayResX = track->PlayResY * 4 / 3;
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}
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track->Kerning = true;
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int sid = ass_alloc_style(track);
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track->default_style = sid;
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ASS_Style *style = track->styles + sid;
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style->Name = strdup("Default");
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style->Alignment = 2;
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mp_ass_set_style(style, track->PlayResY, opts->sub_text_style);
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}
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if (opts->ass_style_override)
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ass_process_force_style(track);
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}
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ASS_Track *mp_ass_default_track(ASS_Library *library, struct MPOpts *opts)
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{
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ASS_Track *track = ass_new_track(library);
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track->track_type = TRACK_TYPE_ASS;
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track->Timer = 100.;
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mp_ass_add_default_styles(track, opts);
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return track;
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}
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void mp_ass_configure(ASS_Renderer *priv, struct MPOpts *opts,
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struct mp_osd_res *dim)
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{
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ass_set_frame_size(priv, dim->w, dim->h);
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ass_set_margins(priv, dim->mt, dim->mb, dim->ml, dim->mr);
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int set_use_margins = 0;
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int set_sub_pos = 0;
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float set_line_spacing = 0;
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float set_font_scale = 1;
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int set_hinting = 0;
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int set_force_override = 0;
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if (opts->ass_style_override) {
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set_use_margins = opts->ass_use_margins;
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set_sub_pos = 100 - opts->sub_pos;
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set_line_spacing = opts->ass_line_spacing;
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set_hinting = opts->ass_hinting;
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set_force_override = opts->ass_style_override == 3;
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set_font_scale = opts->sub_scale;
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if (opts->sub_scale_with_window) {
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int vidh = dim->h - (dim->mt + dim->mb);
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set_font_scale *= dim->h / (float)MPMAX(vidh, 1);
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}
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}
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ass_set_use_margins(priv, set_use_margins);
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#if LIBASS_VERSION >= 0x01010000
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ass_set_line_position(priv, set_sub_pos);
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#endif
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#if LIBASS_VERSION >= 0x01000000
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ass_set_shaper(priv, opts->ass_shaper);
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#endif
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#if LIBASS_VERSION >= 0x01103000
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ass_set_selective_style_override_enabled(priv, set_force_override);
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ASS_Style style = {0};
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mp_ass_set_style(&style, 288, opts->sub_text_style);
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ass_set_selective_style_override(priv, &style);
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free(style.FontName);
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#endif
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ass_set_font_scale(priv, set_font_scale);
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ass_set_hinting(priv, set_hinting);
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ass_set_line_spacing(priv, set_line_spacing);
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}
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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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{
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void *tmp = talloc_new(NULL);
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char *default_font = mp_find_config_file(tmp, global, "subfont.ttf");
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char *config = mp_find_config_file(tmp, global, "fonts.conf");
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if (default_font && !mp_path_exists(default_font))
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default_font = NULL;
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mp_verbose(log, "Setting up fonts...\n");
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ass_set_fonts(priv, default_font, opts->font, 1, config, 1);
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mp_verbose(log, "Done.\n");
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talloc_free(tmp);
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}
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void mp_ass_render_frame(ASS_Renderer *renderer, ASS_Track *track, double time,
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struct sub_bitmap **parts, struct sub_bitmaps *res)
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{
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int changed;
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ASS_Image *imgs = ass_render_frame(renderer, track, time, &changed);
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if (changed == 2)
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res->bitmap_id = ++res->bitmap_pos_id;
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else if (changed)
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res->bitmap_pos_id++;
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res->format = SUBBITMAP_LIBASS;
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res->parts = *parts;
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res->num_parts = 0;
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int num_parts_alloc = MP_TALLOC_ELEMS(res->parts);
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for (struct ass_image *img = imgs; img; img = img->next) {
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if (img->w == 0 || img->h == 0)
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continue;
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if (res->num_parts >= num_parts_alloc) {
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num_parts_alloc = MPMAX(num_parts_alloc * 2, 32);
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res->parts = talloc_realloc(NULL, res->parts, struct sub_bitmap,
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num_parts_alloc);
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}
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struct sub_bitmap *p = &res->parts[res->num_parts];
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p->bitmap = img->bitmap;
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p->stride = img->stride;
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p->libass.color = img->color;
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p->dw = p->w = img->w;
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p->dh = p->h = img->h;
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p->x = img->dst_x;
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p->y = img->dst_y;
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res->num_parts++;
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}
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*parts = res->parts;
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}
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static const int map_ass_level[] = {
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MSGL_ERR, // 0 "FATAL errors"
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MSGL_WARN,
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MSGL_INFO,
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MSGL_V,
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MSGL_V,
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MSGL_V, // 5 application recommended level
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MSGL_DEBUG,
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MSGL_TRACE, // 7 "verbose DEBUG"
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};
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static void message_callback(int level, const char *format, va_list va, void *ctx)
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{
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struct mp_log *log = ctx;
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if (!log)
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return;
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level = map_ass_level[level];
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mp_msg_va(log, level, format, va);
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// libass messages lack trailing \n
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mp_msg(log, level, "\n");
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}
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ASS_Library *mp_ass_init(struct mpv_global *global, struct mp_log *log)
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{
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char *path = mp_find_config_file(NULL, global, "fonts");
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ASS_Library *priv = ass_library_init();
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if (!priv)
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abort();
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ass_set_message_cb(priv, message_callback, log);
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if (path)
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ass_set_fonts_dir(priv, path);
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ass_set_extract_fonts(priv, global->opts->use_embedded_fonts);
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talloc_free(path);
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return priv;
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}
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