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Diffstat (limited to '')
| -rw-r--r-- | player/external_files.c | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/player/external_files.c b/player/external_files.c new file mode 100644 index 0000000..e9a6081 --- /dev/null +++ b/player/external_files.c @@ -0,0 +1,359 @@ +/* + * This file is part of mpv. + * + * mpv is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * mpv is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with mpv. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <dirent.h> +#include <string.h> +#include <strings.h> +#include <stdlib.h> +#include <assert.h> + +#include "osdep/io.h" + +#include "common/common.h" +#include "common/global.h" +#include "common/msg.h" +#include "misc/ctype.h" +#include "misc/charset_conv.h" +#include "options/options.h" +#include "options/path.h" +#include "external_files.h" + +// Stolen from: vlc/-/blob/master/modules/meta_engine/folder.c#L40 +// sorted by priority (descending) +static const char *const cover_files[] = { + "AlbumArt", + "Album", + "cover", + "front", + "AlbumArtSmall", + "Folder", + ".folder", + "thumb", + NULL +}; + +// Needed for mp_might_be_subtitle_file +char **sub_exts; + +static bool test_ext_list(bstr ext, char **list) +{ + if (!list) + goto done; + for (int n = 0; list[n]; n++) { + if (bstrcasecmp(bstr0(list[n]), ext) == 0) + return true; + } +done: + return false; +} + +static int test_ext(MPOpts *opts, bstr ext) +{ + if (test_ext_list(ext, opts->sub_auto_exts)) + return STREAM_SUB; + if (test_ext_list(ext, opts->audiofile_auto_exts)) + return STREAM_AUDIO; + if (test_ext_list(ext, opts->coverart_auto_exts)) + return STREAM_VIDEO; + return -1; +} + +static int test_cover_filename(bstr fname) +{ + for (int n = 0; cover_files[n]; n++) { + if (bstrcasecmp(bstr0(cover_files[n]), fname) == 0) { + return MP_ARRAY_SIZE(cover_files) - n; + } + } + return 0; +} + +bool mp_might_be_subtitle_file(const char *filename) +{ + return test_ext_list(bstr_get_ext(bstr0(filename)), sub_exts); +} + +void mp_update_subtitle_exts(struct MPOpts *opts) +{ + sub_exts = opts->sub_auto_exts; +} + +static int compare_sub_filename(const void *a, const void *b) +{ + const struct subfn *s1 = a; + const struct subfn *s2 = b; + return strcoll(s1->fname, s2->fname); +} + +static int compare_sub_priority(const void *a, const void *b) +{ + const struct subfn *s1 = a; + const struct subfn *s2 = b; + if (s1->priority > s2->priority) + return -1; + if (s1->priority < s2->priority) + return 1; + return strcoll(s1->fname, s2->fname); +} + +static struct bstr guess_lang_from_filename(struct bstr name, int *fn_start) +{ + if (name.len < 2) + return (struct bstr){NULL, 0}; + + int n = 0; + int i = name.len - 1; + + char thing = '.'; + if (name.start[i] == ')') { + thing = '('; + i--; + } + if (name.start[i] == ']') { + thing = '['; + i--; + } + + while (i >= 0 && mp_isalpha(name.start[i])) { + n++; + if (n > 3) + return (struct bstr){NULL, 0}; + i--; + } + + if (n < 2 || i == 0 || name.start[i] != thing) + return (struct bstr){NULL, 0}; + + *fn_start = i; + return (struct bstr){name.start + i + 1, n}; +} + +static void append_dir_subtitles(struct mpv_global *global, struct MPOpts *opts, + struct subfn **slist, int *nsub, + struct bstr path, const char *fname, + int limit_fuzziness, int limit_type) +{ + void *tmpmem = talloc_new(NULL); + struct mp_log *log = mp_log_new(tmpmem, global->log, "find_files"); + + struct bstr f_fbname = bstr0(mp_basename(fname)); + struct bstr f_fname = mp_iconv_to_utf8(log, f_fbname, + "UTF-8-MAC", MP_NO_LATIN1_FALLBACK); + struct bstr f_fname_noext = bstrdup(tmpmem, bstr_strip_ext(f_fname)); + bstr_lower(f_fname_noext); + struct bstr f_fname_trim = bstr_strip(f_fname_noext); + + if (f_fbname.start != f_fname.start) + talloc_steal(tmpmem, f_fname.start); + + char *path0 = bstrdup0(tmpmem, path); + + if (mp_is_url(bstr0(path0))) + goto out; + + DIR *d = opendir(path0); + if (!d) + goto out; + mp_verbose(log, "Loading external files in %.*s\n", BSTR_P(path)); + struct dirent *de; + while ((de = readdir(d))) { + void *tmpmem2 = talloc_new(tmpmem); + struct bstr den = bstr0(de->d_name); + struct bstr dename = mp_iconv_to_utf8(log, den, + "UTF-8-MAC", MP_NO_LATIN1_FALLBACK); + // retrieve various parts of the filename + struct bstr tmp_fname_noext = bstrdup(tmpmem2, bstr_strip_ext(dename)); + bstr_lower(tmp_fname_noext); + struct bstr tmp_fname_ext = bstr_get_ext(dename); + struct bstr tmp_fname_trim = bstr_strip(tmp_fname_noext); + + if (den.start != dename.start) + talloc_steal(tmpmem2, dename.start); + + // check what it is (most likely) + int type = test_ext(opts, tmp_fname_ext); + char **langs = NULL; + int fuzz = -1; + switch (type) { + case STREAM_SUB: + langs = opts->stream_lang[type]; + fuzz = opts->sub_auto; + break; + case STREAM_AUDIO: + langs = opts->stream_lang[type]; + fuzz = opts->audiofile_auto; + break; + case STREAM_VIDEO: + fuzz = opts->coverart_auto; + break; + } + + if (fuzz < 0 || (limit_type >= 0 && limit_type != type)) + goto next_sub; + + // we have a (likely) subtitle file + // higher prio -> auto-selection may prefer it (0 = not loaded) + int prio = 0; + + if (bstrcmp(tmp_fname_trim, f_fname_trim) == 0) + prio |= 32; // exact movie name match + + bstr lang = {0}; + int start = 0; + lang = guess_lang_from_filename(tmp_fname_trim, &start); + if (bstr_startswith(tmp_fname_trim, f_fname_trim)) { + if (lang.len && start == f_fname_trim.len) + prio |= 16; // exact movie name + followed by lang + + if (lang.len && fuzz >= 1) + prio |= 4; // matches the movie name + a language was matched + + for (int n = 0; langs && langs[n]; n++) { + if (lang.len && bstr_case_startswith(lang, bstr0(langs[n]))) { + if (fuzz >= 1) + prio |= 8; // known language -> boost priority + break; + } + } + } + + if (bstr_find(tmp_fname_trim, f_fname_trim) >= 0 && fuzz >= 1) + prio |= 2; // contains the movie name + + if (type == STREAM_VIDEO && opts->coverart_whitelist && prio == 0) + prio = test_cover_filename(tmp_fname_trim); + + // doesn't contain the movie name + // don't try in the mplayer subtitle directory + if (!limit_fuzziness && fuzz >= 2) + prio |= 1; + + mp_trace(log, "Potential external file: \"%s\" Priority: %d\n", + de->d_name, prio); + + if (prio) { + char *subpath = mp_path_join_bstr(*slist, path, dename); + if (mp_path_exists(subpath)) { + MP_TARRAY_GROW(NULL, *slist, *nsub); + struct subfn *sub = *slist + (*nsub)++; + + // annoying and redundant + if (strncmp(subpath, "./", 2) == 0) + subpath += 2; + + sub->type = type; + sub->priority = prio; + sub->fname = subpath; + sub->lang = lang.len ? bstrdup0(*slist, lang) : NULL; + } else + talloc_free(subpath); + } + + next_sub: + talloc_free(tmpmem2); + } + closedir(d); + + out: + talloc_free(tmpmem); +} + +static bool case_endswith(const char *s, const char *end) +{ + size_t len = strlen(s); + size_t elen = strlen(end); + return len >= elen && strcasecmp(s + len - elen, end) == 0; +} + +// Drop .sub file if .idx file exists. +// Assumes slist is sorted by compare_sub_filename. +static void filter_subidx(struct subfn **slist, int *nsub) +{ + const char *prev = NULL; + for (int n = 0; n < *nsub; n++) { + const char *fname = (*slist)[n].fname; + if (case_endswith(fname, ".idx")) { + prev = fname; + } else if (case_endswith(fname, ".sub")) { + if (prev && strncmp(prev, fname, strlen(fname) - 4) == 0) + (*slist)[n].priority = -1; + } + } + for (int n = *nsub - 1; n >= 0; n--) { + if ((*slist)[n].priority < 0) + MP_TARRAY_REMOVE_AT(*slist, *nsub, n); + } +} + +static void load_paths(struct mpv_global *global, struct MPOpts *opts, + struct subfn **slist, int *nsubs, const char *fname, + char **paths, char *cfg_path, int type) +{ + for (int i = 0; paths && paths[i]; i++) { + char *expanded_path = mp_get_user_path(NULL, global, paths[i]); + char *path = mp_path_join_bstr( + *slist, mp_dirname(fname), + bstr0(expanded_path ? expanded_path : paths[i])); + append_dir_subtitles(global, opts, slist, nsubs, bstr0(path), + fname, 0, type); + talloc_free(expanded_path); + } + + // Load subtitles in ~/.mpv/sub (or similar) limiting sub fuzziness + char *mp_subdir = mp_find_config_file(NULL, global, cfg_path); + if (mp_subdir) { + append_dir_subtitles(global, opts, slist, nsubs, bstr0(mp_subdir), + fname, 1, type); + } + talloc_free(mp_subdir); +} + +// Return a list of subtitles and audio files found, sorted by priority. +// Last element is terminated with a fname==NULL entry. +struct subfn *find_external_files(struct mpv_global *global, const char *fname, + struct MPOpts *opts) +{ + struct subfn *slist = talloc_array_ptrtype(NULL, slist, 1); + int n = 0; + + // Load subtitles from current media directory + append_dir_subtitles(global, opts, &slist, &n, mp_dirname(fname), fname, 0, -1); + + // Load subtitles in dirs specified by sub-paths option + if (opts->sub_auto >= 0) { + load_paths(global, opts, &slist, &n, fname, opts->sub_paths, "sub", + STREAM_SUB); + } + + if (opts->audiofile_auto >= 0) { + load_paths(global, opts, &slist, &n, fname, opts->audiofile_paths, + "audio", STREAM_AUDIO); + } + + // Sort by name for filter_subidx() + qsort(slist, n, sizeof(*slist), compare_sub_filename); + + filter_subidx(&slist, &n); + + // Sort subs by priority and append them + qsort(slist, n, sizeof(*slist), compare_sub_priority); + + struct subfn z = {0}; + MP_TARRAY_APPEND(NULL, slist, n, z); + + return slist; +} |