mirror of
https://github.com/mpv-player/mpv
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686d57168f
Patch by Adrian Stutz (adrian sttz ch). git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@28895 b3059339-0415-0410-9bf9-f77b7e298cf2
280 lines
7.5 KiB
C
280 lines
7.5 KiB
C
// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
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// vim:ts=8:sw=8:noet:ai:
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/*
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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 libass.
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*
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* libass 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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* libass 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 "mp_msg.h"
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#include "get_path.h"
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#include "ass.h"
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#include "ass_utils.h"
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#include "ass_mp.h"
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#include "ass_library.h"
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#ifdef CONFIG_FONTCONFIG
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#include <fontconfig/fontconfig.h>
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#endif
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// libass-related command line options
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ass_library_t* ass_library;
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int ass_enabled = 0;
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float ass_font_scale = 1.;
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float ass_line_spacing = 0.;
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int ass_top_margin = 0;
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int ass_bottom_margin = 0;
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#if defined(FC_VERSION) && (FC_VERSION >= 20402)
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int extract_embedded_fonts = 1;
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#else
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int extract_embedded_fonts = 0;
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#endif
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char **ass_force_style_list = NULL;
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int ass_use_margins = 0;
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char* ass_color = NULL;
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char* ass_border_color = NULL;
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char* ass_styles_file = NULL;
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int ass_hinting = ASS_HINTING_NATIVE + 4; // native hinting for unscaled osd
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#ifdef CONFIG_FONTCONFIG
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extern int font_fontconfig;
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#else
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static int font_fontconfig = -1;
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#endif
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extern char* font_name;
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extern char* sub_font_name;
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extern float text_font_scale_factor;
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extern int subtitle_autoscale;
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#ifdef CONFIG_ICONV
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extern char* sub_cp;
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#else
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static char* sub_cp = 0;
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#endif
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void process_force_style(ass_track_t* track);
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ass_track_t* ass_default_track(ass_library_t* library) {
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ass_track_t* 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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track->PlayResY = 288;
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track->WrapStyle = 0;
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if (ass_styles_file)
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ass_read_styles(track, ass_styles_file, sub_cp);
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if (track->n_styles == 0) {
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ass_style_t* style;
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int sid;
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double fs;
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uint32_t c1, c2;
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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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style->FontName = (font_fontconfig >= 0 && sub_font_name) ? strdup(sub_font_name) : (font_fontconfig >= 0 && font_name) ? strdup(font_name) : strdup("Sans");
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style->treat_fontname_as_pattern = 1;
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fs = track->PlayResY * text_font_scale_factor / 100.;
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// approximate autoscale coefficients
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if (subtitle_autoscale == 2)
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fs *= 1.3;
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else if (subtitle_autoscale == 3)
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fs *= 1.4;
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style->FontSize = fs;
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if (ass_color) c1 = strtoll(ass_color, NULL, 16);
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else c1 = 0xFFFF0000;
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if (ass_border_color) c2 = strtoll(ass_border_color, NULL, 16);
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else c2 = 0x00000000;
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style->PrimaryColour = c1;
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style->SecondaryColour = c1;
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style->OutlineColour = c2;
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style->BackColour = 0x00000000;
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style->BorderStyle = 1;
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style->Alignment = 2;
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style->Outline = 2;
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style->MarginL = 10;
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style->MarginR = 10;
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style->MarginV = 5;
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style->ScaleX = 1.;
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style->ScaleY = 1.;
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}
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process_force_style(track);
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return track;
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}
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static int check_duplicate_plaintext_event(ass_track_t* track)
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{
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int i;
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ass_event_t* evt = track->events + track->n_events - 1;
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for (i = 0; i<track->n_events - 1; ++i) // ignoring last event, it is the one we are comparing with
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if (track->events[i].Start == evt->Start &&
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track->events[i].Duration == evt->Duration &&
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strcmp(track->events[i].Text, evt->Text) == 0)
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return 1;
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return 0;
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}
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/**
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* \brief Convert subtitle to ass_event_t for the given track
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* \param ass_track_t track
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* \param sub subtitle to convert
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* \return event id
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* note: assumes that subtitle is _not_ fps-based; caller must manually correct
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* Start and Duration in other case.
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**/
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int ass_process_subtitle(ass_track_t* track, subtitle* sub)
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{
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int eid;
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ass_event_t* event;
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int len = 0, j;
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char* p;
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char* end;
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eid = ass_alloc_event(track);
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event = track->events + eid;
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event->Start = sub->start * 10;
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event->Duration = (sub->end - sub->start) * 10;
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event->Style = 0;
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for (j = 0; j < sub->lines; ++j)
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len += sub->text[j] ? strlen(sub->text[j]) : 0;
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len += 2 * sub->lines; // '\N', including the one after the last line
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len += 6; // {\anX}
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len += 1; // '\0'
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event->Text = malloc(len);
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end = event->Text + len;
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p = event->Text;
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if (sub->alignment)
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p += snprintf(p, end - p, "{\\an%d}", sub->alignment);
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for (j = 0; j < sub->lines; ++j)
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p += snprintf(p, end - p, "%s\\N", sub->text[j]);
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if (sub->lines > 0) p-=2; // remove last "\N"
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*p = 0;
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if (check_duplicate_plaintext_event(track)) {
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ass_free_event(track, eid);
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track->n_events--;
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return -1;
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}
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mp_msg(MSGT_ASS, MSGL_V, "plaintext event at %" PRId64 ", +%" PRId64 ": %s \n",
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(int64_t)event->Start, (int64_t)event->Duration, event->Text);
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return eid;
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}
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/**
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* \brief Convert subdata to ass_track
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* \param subdata subtitles struct from subreader
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* \param fps video framerate
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* \return newly allocated ass_track, filled with subtitles from subdata
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*/
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ass_track_t* ass_read_subdata(ass_library_t* library, sub_data* subdata, double fps) {
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ass_track_t* track;
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int i;
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track = ass_default_track(library);
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track->name = subdata->filename ? strdup(subdata->filename) : 0;
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for (i = 0; i < subdata->sub_num; ++i) {
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int eid = ass_process_subtitle(track, subdata->subtitles + i);
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if (eid < 0)
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continue;
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if (!subdata->sub_uses_time) {
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track->events[eid].Start *= 100. / fps;
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track->events[eid].Duration *= 100. / fps;
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}
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}
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return track;
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}
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void ass_configure(ass_renderer_t* priv, int w, int h, int unscaled) {
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int hinting;
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ass_set_frame_size(priv, w, h);
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ass_set_margins(priv, ass_top_margin, ass_bottom_margin, 0, 0);
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ass_set_use_margins(priv, ass_use_margins);
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ass_set_font_scale(priv, ass_font_scale);
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if (!unscaled && (ass_hinting & 4))
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hinting = 0;
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else
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hinting = ass_hinting & 3;
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ass_set_hinting(priv, hinting);
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ass_set_line_spacing(priv, ass_line_spacing);
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}
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void ass_configure_fonts(ass_renderer_t* priv) {
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char *dir, *path, *family;
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dir = get_path("fonts");
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if (font_fontconfig < 0 && sub_font_name) path = strdup(sub_font_name);
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else if (font_fontconfig < 0 && font_name) path = strdup(font_name);
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else path = get_path("subfont.ttf");
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if (font_fontconfig >= 0 && sub_font_name) family = strdup(sub_font_name);
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else if (font_fontconfig >= 0 && font_name) family = strdup(font_name);
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else family = 0;
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if (font_fontconfig >= 0)
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ass_set_fonts(priv, path, family);
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else
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ass_set_fonts_nofc(priv, path, family);
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free(dir);
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free(path);
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free(family);
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}
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ass_library_t* ass_init(void) {
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ass_library_t* priv;
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char* path = get_path("fonts");
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priv = ass_library_init();
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ass_set_fonts_dir(priv, path);
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ass_set_extract_fonts(priv, extract_embedded_fonts);
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ass_set_style_overrides(priv, ass_force_style_list);
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free(path);
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return priv;
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}
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int ass_force_reload = 0; // flag set if global ass-related settings were changed
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ass_image_t* ass_mp_render_frame(ass_renderer_t *priv, ass_track_t* track, long long now, int* detect_change) {
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if (ass_force_reload) {
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ass_set_margins(priv, ass_top_margin, ass_bottom_margin, 0, 0);
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ass_set_use_margins(priv, ass_use_margins);
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ass_set_font_scale(priv, ass_font_scale);
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ass_force_reload = 0;
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}
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return ass_render_frame(priv, track, now, detect_change);
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}
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