mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 00:02:13 +00:00
696a8c5609
This is pretty much a hack for the OSC. It will allow it to rely on a somewhat predictable style, instead of having to overwrite all user OSD settings manually with override tags.
457 lines
13 KiB
C
457 lines
13 KiB
C
/*
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* This file is part of mplayer2.
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*
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* mplayer2 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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* mplayer2 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 mplayer2. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <libavutil/common.h>
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#include "config.h"
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#include "talloc.h"
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#include "mpvcore/mp_common.h"
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#include "mpvcore/mp_msg.h"
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#include "sub.h"
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static const char osd_font_pfb[] =
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#include "sub/osd_font.h"
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;
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#include "sub/ass_mp.h"
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#include "mpvcore/options.h"
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#define ASS_USE_OSD_FONT "{\\fnmpv-osd-symbols}"
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void osd_init_backend(struct osd_state *osd)
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{
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osd->osd_ass_library = mp_ass_init(osd->opts);
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ass_add_font(osd->osd_ass_library, "mpv-osd-symbols", (void *)osd_font_pfb,
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sizeof(osd_font_pfb) - 1);
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osd->osd_render = ass_renderer_init(osd->osd_ass_library);
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mp_ass_configure_fonts(osd->osd_render, osd->opts->osd_style);
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ass_set_aspect_ratio(osd->osd_render, 1.0, 1.0);
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}
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void osd_destroy_backend(struct osd_state *osd)
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{
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for (int n = 0; n < MAX_OSD_PARTS; n++) {
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struct osd_object *obj = osd->objs[n];
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if (obj->osd_track)
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ass_free_track(obj->osd_track);
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obj->osd_track = NULL;
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}
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if (osd->osd_render)
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ass_renderer_done(osd->osd_render);
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osd->osd_render = NULL;
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ass_library_done(osd->osd_ass_library);
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osd->osd_ass_library = NULL;
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}
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static void create_osd_ass_track(struct osd_state *osd, struct osd_object *obj)
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{
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ASS_Track *track = obj->osd_track;
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if (!track)
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track = ass_new_track(osd->osd_ass_library);
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double aspect = 1.0 * obj->vo_res.w / FFMAX(obj->vo_res.h, 1) /
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obj->vo_res.display_par;
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track->track_type = TRACK_TYPE_ASS;
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track->Timer = 100.;
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track->PlayResY = MP_ASS_FONT_PLAYRESY;
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track->PlayResX = track->PlayResY * aspect;
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track->WrapStyle = 1; // end-of-line wrapping instead of smart wrapping
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if (track->n_styles == 0) {
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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->Alignment = 5; // top-title, left
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style->Name = strdup("OSD");
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mp_ass_set_style(style, MP_ASS_FONT_PLAYRESY, osd->opts->osd_style);
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// Set to neutral base direction, as opposed to VSFilter LTR default
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style->Encoding = -1;
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sid = ass_alloc_style(track);
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style = track->styles + sid;
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style->Name = strdup("Default");
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const struct osd_style_opts *def = osd_style_conf.defaults;
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mp_ass_set_style(style, MP_ASS_FONT_PLAYRESY, def);
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style->Encoding = -1;
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}
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obj->osd_track = track;
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}
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static ASS_Event *add_osd_ass_event(ASS_Track *track, const char *text)
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{
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int n = ass_alloc_event(track);
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ASS_Event *event = track->events + n;
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event->Start = 0;
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event->Duration = 100;
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event->Style = track->default_style;
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event->ReadOrder = n;
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assert(event->Text == NULL);
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if (text)
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event->Text = strdup(text);
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return event;
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}
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static void clear_obj(struct osd_object *obj)
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{
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if (obj->osd_track)
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ass_flush_events(obj->osd_track);
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}
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void osd_get_function_sym(char *buffer, size_t buffer_size, int osd_function)
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{
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// 0xFF is never valid UTF-8, so we can use it to escape OSD symbols.
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snprintf(buffer, buffer_size, "\xFF%c", osd_function);
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}
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static char *mangle_ass(const char *in)
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{
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char *res = talloc_strdup(NULL, "");
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while (*in) {
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// As used by osd_get_function_sym().
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if (in[0] == '\xFF' && in[1]) {
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res = talloc_strdup_append_buffer(res, ASS_USE_OSD_FONT);
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res = mp_append_utf8_buffer(res, OSD_CODEPOINTS + in[1]);
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res = talloc_strdup_append_buffer(res, "{\\r}");
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in += 2;
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continue;
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}
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if (*in == '{')
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res = talloc_strdup_append_buffer(res, "\\");
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res = talloc_strndup_append_buffer(res, in, 1);
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// Break ASS escapes with U+2060 WORD JOINER
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if (*in == '\\')
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res = mp_append_utf8_buffer(res, 0x2060);
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in++;
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}
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return res;
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}
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static void update_osd(struct osd_state *osd, struct osd_object *obj)
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{
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struct MPOpts *opts = osd->opts;
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create_osd_ass_track(osd, obj);
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clear_obj(obj);
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if (!osd->osd_text[0])
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return;
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struct osd_style_opts font = *opts->osd_style;
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font.font_size *= opts->osd_scale;
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ASS_Style *style = obj->osd_track->styles + obj->osd_track->default_style;
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mp_ass_set_style(style, obj->osd_track->PlayResY, &font);
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char *text = mangle_ass(osd->osd_text);
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add_osd_ass_event(obj->osd_track, text);
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talloc_free(text);
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}
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// align: -1 .. +1
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// frame: size of the containing area
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// obj: size of the object that should be positioned inside the area
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// margin: min. distance from object to frame (as long as -1 <= align <= +1)
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static float get_align(float align, float frame, float obj, float margin)
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{
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frame -= margin * 2;
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return margin + frame / 2 - obj / 2 + (frame - obj) / 2 * align;
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}
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struct ass_draw {
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int scale;
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char *text;
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};
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static void ass_draw_start(struct ass_draw *d)
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{
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d->scale = FFMAX(d->scale, 1);
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d->text = talloc_asprintf_append(d->text, "{\\p%d}", d->scale);
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}
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static void ass_draw_stop(struct ass_draw *d)
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{
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d->text = talloc_strdup_append(d->text, "{\\p0}");
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}
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static void ass_draw_c(struct ass_draw *d, float x, float y)
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{
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int ix = round(x * (1 << (d->scale - 1)));
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int iy = round(y * (1 << (d->scale - 1)));
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d->text = talloc_asprintf_append(d->text, " %d %d", ix, iy);
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}
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static void ass_draw_append(struct ass_draw *d, const char *t)
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{
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d->text = talloc_strdup_append(d->text, t);
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}
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static void ass_draw_move_to(struct ass_draw *d, float x, float y)
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{
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ass_draw_append(d, " m");
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ass_draw_c(d, x, y);
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}
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static void ass_draw_line_to(struct ass_draw *d, float x, float y)
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{
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ass_draw_append(d, " l");
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ass_draw_c(d, x, y);
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}
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static void ass_draw_rect_ccw(struct ass_draw *d, float x0, float y0,
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float x1, float y1)
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{
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ass_draw_move_to(d, x0, y0);
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ass_draw_line_to(d, x0, y1);
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ass_draw_line_to(d, x1, y1);
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ass_draw_line_to(d, x1, y0);
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}
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static void ass_draw_rect_cw(struct ass_draw *d, float x0, float y0,
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float x1, float y1)
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{
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ass_draw_move_to(d, x0, y0);
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ass_draw_line_to(d, x1, y0);
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ass_draw_line_to(d, x1, y1);
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ass_draw_line_to(d, x0, y1);
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}
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static void ass_draw_reset(struct ass_draw *d)
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{
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talloc_free(d->text);
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d->text = NULL;
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}
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static void get_osd_bar_box(struct osd_state *osd, struct osd_object *obj,
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float *o_x, float *o_y, float *o_w, float *o_h,
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float *o_border)
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{
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struct MPOpts *opts = osd->opts;
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bool new_track = !obj->osd_track;
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create_osd_ass_track(osd, obj);
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ASS_Track *track = obj->osd_track;
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ASS_Style *style = track->styles + track->default_style;
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*o_w = track->PlayResX * (opts->osd_bar_w / 100.0);
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*o_h = track->PlayResY * (opts->osd_bar_h / 100.0);
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if (new_track) {
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float base_size = 0.03125;
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style->Outline *= *o_h / track->PlayResY / base_size;
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// So that the chapter marks have space between them
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style->Outline = FFMIN(style->Outline, *o_h / 5.2);
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// So that the border is not 0
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style->Outline = FFMAX(style->Outline, *o_h / 32.0);
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// Rendering with shadow is broken (because there's more than one shape)
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style->Shadow = 0;
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}
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*o_border = style->Outline;
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*o_x = get_align(opts->osd_bar_align_x, track->PlayResX, *o_w, *o_border);
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*o_y = get_align(opts->osd_bar_align_y, track->PlayResY, *o_h, *o_border);
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}
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static void update_progbar(struct osd_state *osd, struct osd_object *obj)
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{
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float px, py, width, height, border;
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get_osd_bar_box(osd, obj, &px, &py, &width, &height, &border);
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clear_obj(obj);
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if (osd->progbar_type < 0)
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return;
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float sx = px - border * 2 - height / 4; // includes additional spacing
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float sy = py + height / 2;
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char *text = talloc_asprintf(NULL, "{\\an6\\pos(%f,%f)}", sx, sy);
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if (osd->progbar_type == 0 || osd->progbar_type >= 256) {
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// no sym
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} else if (osd->progbar_type >= 32) {
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text = mp_append_utf8_buffer(text, osd->progbar_type);
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} else {
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text = talloc_strdup_append_buffer(text, ASS_USE_OSD_FONT);
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text = mp_append_utf8_buffer(text, OSD_CODEPOINTS + osd->progbar_type);
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text = talloc_strdup_append_buffer(text, "{\\r}");
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}
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add_osd_ass_event(obj->osd_track, text);
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talloc_free(text);
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struct ass_draw *d = &(struct ass_draw) { .scale = 4 };
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// filled area
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d->text = talloc_asprintf_append(d->text, "{\\bord0\\pos(%f,%f)}", px, py);
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ass_draw_start(d);
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float pos = osd->progbar_value * width - border / 2;
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ass_draw_rect_cw(d, 0, 0, pos, height);
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ass_draw_stop(d);
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add_osd_ass_event(obj->osd_track, d->text);
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ass_draw_reset(d);
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// position marker
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d->text = talloc_asprintf_append(d->text, "{\\bord%f\\pos(%f,%f)}",
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border / 2, px, py);
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ass_draw_start(d);
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ass_draw_move_to(d, pos + border / 2, 0);
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ass_draw_line_to(d, pos + border / 2, height);
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ass_draw_stop(d);
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add_osd_ass_event(obj->osd_track, d->text);
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ass_draw_reset(d);
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d->text = talloc_asprintf_append(d->text, "{\\pos(%f,%f)}", px, py);
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ass_draw_start(d);
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// the box
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ass_draw_rect_cw(d, -border, -border, width + border, height + border);
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// the "hole"
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ass_draw_rect_ccw(d, 0, 0, width, height);
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// chapter marks
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for (int n = 0; n < osd->progbar_num_stops; n++) {
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float s = osd->progbar_stops[n] * width;
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float dent = border * 1.3;
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if (s > dent && s < width - dent) {
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ass_draw_move_to(d, s + dent, 0);
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ass_draw_line_to(d, s, dent);
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ass_draw_line_to(d, s - dent, 0);
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ass_draw_move_to(d, s - dent, height);
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ass_draw_line_to(d, s, height - dent);
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ass_draw_line_to(d, s + dent, height);
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}
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}
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ass_draw_stop(d);
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add_osd_ass_event(obj->osd_track, d->text);
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ass_draw_reset(d);
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}
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static void update_external(struct osd_state *osd, struct osd_object *obj)
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{
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create_osd_ass_track(osd, obj);
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clear_obj(obj);
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if (osd->external_res_x < 1 || osd->external_res_y < 1)
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return;
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ASS_Track *track = obj->osd_track;
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if (track->PlayResX != osd->external_res_x ||
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track->PlayResY != osd->external_res_y)
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{
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track->PlayResX = osd->external_res_x;
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track->PlayResY = osd->external_res_y;
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// Force libass to clear its internal cache - it doesn't check for
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// PlayRes changes itself.
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ass_set_frame_size(osd->osd_render, 1, 1);
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}
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bstr t = bstr0(osd->external);
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while (t.len) {
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bstr line;
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bstr_split_tok(t, "\n", &line, &t);
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if (line.len) {
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char *tmp = bstrdup0(NULL, line);
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add_osd_ass_event(obj->osd_track, tmp);
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talloc_free(tmp);
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}
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}
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}
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static void update_sub(struct osd_state *osd, struct osd_object *obj)
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{
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struct MPOpts *opts = osd->opts;
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clear_obj(obj);
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if (!osd->sub_text || !osd->sub_text[0])
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return;
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if (!obj->osd_track)
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obj->osd_track = mp_ass_default_track(osd->osd_ass_library, osd->opts);
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struct osd_style_opts font = *opts->sub_text_style;
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font.font_size *= opts->sub_scale;
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ASS_Style *style = obj->osd_track->styles + obj->osd_track->default_style;
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mp_ass_set_style(style, obj->osd_track->PlayResY, &font);
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#if LIBASS_VERSION >= 0x01010000
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ass_set_line_position(osd->osd_render, 100 - opts->sub_pos);
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#endif
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char *escaped_text = mangle_ass(osd->sub_text);
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add_osd_ass_event(obj->osd_track, escaped_text);
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talloc_free(escaped_text);
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}
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static void update_object(struct osd_state *osd, struct osd_object *obj)
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{
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switch (obj->type) {
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case OSDTYPE_OSD:
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update_osd(osd, obj);
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break;
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case OSDTYPE_SUBTEXT:
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update_sub(osd, obj);
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break;
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case OSDTYPE_PROGBAR:
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update_progbar(osd, obj);
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break;
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case OSDTYPE_EXTERNAL:
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update_external(osd, obj);
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break;
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}
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}
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void osd_object_get_bitmaps(struct osd_state *osd, struct osd_object *obj,
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struct sub_bitmaps *out_imgs)
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{
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if (obj->force_redraw)
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update_object(osd, obj);
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*out_imgs = (struct sub_bitmaps) {0};
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if (!obj->osd_track)
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return;
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ass_set_frame_size(osd->osd_render, obj->vo_res.w, obj->vo_res.h);
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ass_set_aspect_ratio(osd->osd_render, obj->vo_res.display_par, 1.0);
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mp_ass_render_frame(osd->osd_render, obj->osd_track, 0,
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&obj->parts_cache, out_imgs);
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talloc_steal(obj, obj->parts_cache);
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}
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void osd_object_get_resolution(struct osd_state *osd, struct osd_object *obj,
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int *out_w, int *out_h)
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{
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*out_w = obj->osd_track ? obj->osd_track->PlayResX : 0;
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*out_h = obj->osd_track ? obj->osd_track->PlayResY : 0;
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}
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