mirror of
https://github.com/mpv-player/mpv
synced 2024-12-24 15:52:25 +00:00
fd135cf73e
Fixes #4626. Previously removed because the original smi entry was added by someone who did not agree to LGPL relicensing. I'm not sure if the original change was copyrightable, but this commit for sure does not fall under that author's copyright.
317 lines
10 KiB
C
317 lines
10 KiB
C
/*
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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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#include <dirent.h>
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#include <string.h>
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#include <strings.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "osdep/io.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 "misc/ctype.h"
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#include "misc/charset_conv.h"
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#include "options/options.h"
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#include "options/path.h"
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#include "external_files.h"
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static const char *const sub_exts[] = {"utf", "utf8", "utf-8", "idx", "sub",
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"srt", "rt", "ssa", "ass", "mks", "vtt",
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"sup", "scc", "smi",
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NULL};
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static const char *const audio_exts[] = {"mp3", "aac", "mka", "dts", "flac",
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"ogg", "m4a", "ac3", "opus", "wav",
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"wv",
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NULL};
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static bool test_ext_list(bstr ext, const char *const *list)
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{
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for (int n = 0; list[n]; n++) {
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if (bstrcasecmp(bstr0(list[n]), ext) == 0)
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return true;
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}
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return false;
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}
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static int test_ext(bstr ext)
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{
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if (test_ext_list(ext, sub_exts))
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return STREAM_SUB;
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if (test_ext_list(ext, audio_exts))
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return STREAM_AUDIO;
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return -1;
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}
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bool mp_might_be_subtitle_file(const char *filename)
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{
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return test_ext(bstr_get_ext(bstr0(filename))) == STREAM_SUB;
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}
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static int compare_sub_filename(const void *a, const void *b)
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{
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const struct subfn *s1 = a;
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const struct subfn *s2 = b;
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return strcoll(s1->fname, s2->fname);
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}
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static int compare_sub_priority(const void *a, const void *b)
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{
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const struct subfn *s1 = a;
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const struct subfn *s2 = b;
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if (s1->priority > s2->priority)
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return -1;
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if (s1->priority < s2->priority)
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return 1;
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return strcoll(s1->fname, s2->fname);
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}
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static struct bstr guess_lang_from_filename(struct bstr name)
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{
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if (name.len < 2)
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return (struct bstr){NULL, 0};
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int n = 0;
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int i = name.len - 1;
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if (name.start[i] == ')' || name.start[i] == ']')
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i--;
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while (i >= 0 && mp_isalpha(name.start[i])) {
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n++;
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if (n > 3)
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return (struct bstr){NULL, 0};
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i--;
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}
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if (n < 2)
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return (struct bstr){NULL, 0};
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return (struct bstr){name.start + i + 1, n};
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}
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static void append_dir_subtitles(struct mpv_global *global,
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struct subfn **slist, int *nsub,
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struct bstr path, const char *fname,
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int limit_fuzziness, int limit_type)
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{
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void *tmpmem = talloc_new(NULL);
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struct MPOpts *opts = global->opts;
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struct mp_log *log = mp_log_new(tmpmem, global->log, "find_files");
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struct bstr f_fbname = bstr0(mp_basename(fname));
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struct bstr f_fname = mp_iconv_to_utf8(log, f_fbname,
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"UTF-8-MAC", MP_NO_LATIN1_FALLBACK);
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struct bstr f_fname_noext = bstrdup(tmpmem, bstr_strip_ext(f_fname));
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bstr_lower(f_fname_noext);
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struct bstr f_fname_trim = bstr_strip(f_fname_noext);
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if (f_fbname.start != f_fname.start)
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talloc_steal(tmpmem, f_fname.start);
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// 0 = nothing
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// 1 = any subtitle file
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// 2 = any sub file containing movie name
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// 3 = sub file containing movie name and the lang extension
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char *path0 = bstrdup0(tmpmem, path);
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if (mp_is_url(bstr0(path0)))
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goto out;
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DIR *d = opendir(path0);
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if (!d)
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goto out;
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mp_verbose(log, "Loading external files in %.*s\n", BSTR_P(path));
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struct dirent *de;
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while ((de = readdir(d))) {
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void *tmpmem2 = talloc_new(tmpmem);
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struct bstr den = bstr0(de->d_name);
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struct bstr dename = mp_iconv_to_utf8(log, den,
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"UTF-8-MAC", MP_NO_LATIN1_FALLBACK);
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// retrieve various parts of the filename
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struct bstr tmp_fname_noext = bstrdup(tmpmem2, bstr_strip_ext(dename));
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bstr_lower(tmp_fname_noext);
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struct bstr tmp_fname_ext = bstr_get_ext(dename);
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struct bstr tmp_fname_trim = bstr_strip(tmp_fname_noext);
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if (den.start != dename.start)
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talloc_steal(tmpmem2, dename.start);
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// check what it is (most likely)
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int type = test_ext(tmp_fname_ext);
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char **langs = NULL;
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int fuzz = -1;
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switch (type) {
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case STREAM_SUB:
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langs = opts->stream_lang[type];
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fuzz = opts->sub_auto;
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break;
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case STREAM_AUDIO:
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langs = opts->stream_lang[type];
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fuzz = opts->audiofile_auto;
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break;
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}
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if (fuzz < 0 || (limit_type >= 0 && limit_type != type))
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goto next_sub;
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// we have a (likely) subtitle file
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int prio = 0;
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char *found_lang = NULL;
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if (langs) {
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if (bstr_startswith(tmp_fname_trim, f_fname_trim)) {
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struct bstr lang = guess_lang_from_filename(tmp_fname_trim);
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if (lang.len) {
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for (int n = 0; langs[n]; n++) {
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if (bstr_startswith0(lang, langs[n])) {
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prio = 4; // matches the movie name + lang extension
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found_lang = langs[n];
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break;
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}
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}
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}
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}
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}
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if (!prio && bstrcmp(tmp_fname_trim, f_fname_trim) == 0)
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prio = 3; // matches the movie name
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if (!prio && bstr_find(tmp_fname_trim, f_fname_trim) >= 0 && fuzz >= 1)
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prio = 2; // contains the movie name
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if (!prio) {
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// doesn't contain the movie name
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// don't try in the mplayer subtitle directory
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if (!limit_fuzziness && fuzz >= 2) {
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prio = 1;
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}
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}
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mp_dbg(log, "Potential external file: \"%s\" Priority: %d\n",
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de->d_name, prio);
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if (prio) {
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prio += prio;
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char *subpath = mp_path_join_bstr(*slist, path, dename);
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if (mp_path_exists(subpath)) {
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MP_TARRAY_GROW(NULL, *slist, *nsub);
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struct subfn *sub = *slist + (*nsub)++;
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// annoying and redundant
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if (strncmp(subpath, "./", 2) == 0)
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subpath += 2;
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sub->type = type;
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sub->priority = prio;
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sub->fname = subpath;
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sub->lang = found_lang;
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} else
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talloc_free(subpath);
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}
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next_sub:
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talloc_free(tmpmem2);
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}
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closedir(d);
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out:
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talloc_free(tmpmem);
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}
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static bool case_endswith(const char *s, const char *end)
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{
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size_t len = strlen(s);
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size_t elen = strlen(end);
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return len >= elen && strcasecmp(s + len - elen, end) == 0;
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}
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// Drop .sub file if .idx file exists.
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// Assumes slist is sorted by compare_sub_filename.
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static void filter_subidx(struct subfn **slist, int *nsub)
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{
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const char *prev = NULL;
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for (int n = 0; n < *nsub; n++) {
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const char *fname = (*slist)[n].fname;
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if (case_endswith(fname, ".idx")) {
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prev = fname;
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} else if (case_endswith(fname, ".sub")) {
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if (prev && strncmp(prev, fname, strlen(fname) - 4) == 0)
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(*slist)[n].priority = -1;
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}
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}
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for (int n = *nsub - 1; n >= 0; n--) {
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if ((*slist)[n].priority < 0)
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MP_TARRAY_REMOVE_AT(*slist, *nsub, n);
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}
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}
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static void load_paths(struct mpv_global *global, struct subfn **slist,
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int *nsubs, const char *fname, char **paths,
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char *cfg_path, int type)
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{
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for (int i = 0; paths && paths[i]; i++) {
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char *expanded_path = mp_get_user_path(NULL, global, paths[i]);
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char *path = mp_path_join_bstr(
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*slist, mp_dirname(fname),
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bstr0(expanded_path ? expanded_path : paths[i]));
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append_dir_subtitles(global, slist, nsubs, bstr0(path),
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fname, 0, type);
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talloc_free(expanded_path);
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}
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// Load subtitles in ~/.mpv/sub (or similar) limiting sub fuzziness
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char *mp_subdir = mp_find_config_file(NULL, global, cfg_path);
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if (mp_subdir) {
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append_dir_subtitles(global, slist, nsubs, bstr0(mp_subdir), fname, 1,
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type);
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}
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talloc_free(mp_subdir);
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}
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// Return a list of subtitles and audio files found, sorted by priority.
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// Last element is terminated with a fname==NULL entry.
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struct subfn *find_external_files(struct mpv_global *global, const char *fname)
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{
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struct MPOpts *opts = global->opts;
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struct subfn *slist = talloc_array_ptrtype(NULL, slist, 1);
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int n = 0;
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// Load subtitles from current media directory
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append_dir_subtitles(global, &slist, &n, mp_dirname(fname), fname, 0, -1);
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// Load subtitles in dirs specified by sub-paths option
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if (opts->sub_auto >= 0) {
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load_paths(global, &slist, &n, fname, opts->sub_paths, "sub",
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STREAM_SUB);
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}
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if (opts->audiofile_auto >= 0) {
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load_paths(global, &slist, &n, fname, opts->audiofile_paths, "audio",
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STREAM_AUDIO);
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}
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// Sort by name for filter_subidx()
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qsort(slist, n, sizeof(*slist), compare_sub_filename);
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filter_subidx(&slist, &n);
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// Sort subs by priority and append them
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qsort(slist, n, sizeof(*slist), compare_sub_priority);
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struct subfn z = {0};
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MP_TARRAY_APPEND(NULL, slist, n, z);
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return slist;
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}
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