From 8782354e6d275e2e92fc129d4358864312032e76 Mon Sep 17 00:00:00 2001 From: wm4 Date: Sun, 20 Sep 2015 18:05:06 +0200 Subject: player: rename and move find_subfiles.c This was in sub/, because the code used to be specific to subtitles. It was extended to automatically load external audio files too, and moving the file and renaming it was long overdue. --- player/external_files.c | 284 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 284 insertions(+) create mode 100644 player/external_files.c (limited to 'player/external_files.c') diff --git a/player/external_files.c b/player/external_files.c new file mode 100644 index 0000000000..77e12db066 --- /dev/null +++ b/player/external_files.c @@ -0,0 +1,284 @@ +#include +#include +#include +#include +#include + +#include "osdep/io.h" + +#include "common/common.h" +#include "common/global.h" +#include "common/msg.h" +#include "misc/ctype.h" +#include "options/options.h" +#include "options/path.h" +#include "external_files.h" + +static const char *const sub_exts[] = {"utf", "utf8", "utf-8", "idx", "sub", "srt", + "smi", "rt", "txt", "ssa", "aqt", "jss", + "js", "ass", "mks", "vtt", "sup", NULL}; + +static const char *const audio_exts[] = {"mp3", "aac", "mka", "dts", "flac", + "ogg", "m4a", "ac3", "opus", NULL}; + +static bool test_ext_list(bstr ext, const char *const *list) +{ + for (int n = 0; list[n]; n++) { + if (bstrcasecmp(bstr0(list[n]), ext) == 0) + return true; + } + return false; +} + +static int test_ext(bstr ext) +{ + if (test_ext_list(ext, sub_exts)) + return STREAM_SUB; + if (test_ext_list(ext, audio_exts)) + return STREAM_AUDIO; + return -1; +} + +static struct bstr strip_ext(struct bstr str) +{ + int dotpos = bstrrchr(str, '.'); + if (dotpos < 0) + return str; + return (struct bstr){str.start, dotpos}; +} + +static struct bstr get_ext(struct bstr s) +{ + int dotpos = bstrrchr(s, '.'); + if (dotpos < 0) + return (struct bstr){NULL, 0}; + return bstr_splice(s, dotpos + 1, s.len); +} + +bool mp_might_be_subtitle_file(const char *filename) +{ + return test_ext(get_ext(bstr0(filename))) == STREAM_SUB; +} + +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) +{ + if (name.len < 2) + return (struct bstr){NULL, 0}; + + int n = 0; + int i = name.len - 1; + + if (name.start[i] == ')' || name.start[i] == ']') + i--; + while (i >= 0 && mp_isalpha(name.start[i])) { + n++; + if (n > 3) + return (struct bstr){NULL, 0}; + i--; + } + if (n < 2) + return (struct bstr){NULL, 0}; + return (struct bstr){name.start + i + 1, n}; +} + +static void append_dir_subtitles(struct mpv_global *global, + struct subfn **slist, int *nsub, + struct bstr path, const char *fname, + int limit_fuzziness) +{ + void *tmpmem = talloc_new(NULL); + struct MPOpts *opts = global->opts; + struct mp_log *log = mp_log_new(tmpmem, global->log, "find_files"); + + if (mp_is_url(bstr0(fname))) + goto out; + + struct bstr f_fname = bstr0(mp_basename(fname)); + struct bstr f_fname_noext = bstrdup(tmpmem, strip_ext(f_fname)); + bstr_lower(f_fname_noext); + struct bstr f_fname_trim = bstr_strip(f_fname_noext); + + // 0 = nothing + // 1 = any subtitle file + // 2 = any sub file containing movie name + // 3 = sub file containing movie name and the lang extension + char *path0 = bstrdup0(tmpmem, path); + 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))) { + struct bstr dename = bstr0(de->d_name); + void *tmpmem2 = talloc_new(tmpmem); + + // retrieve various parts of the filename + struct bstr tmp_fname_noext = bstrdup(tmpmem2, strip_ext(dename)); + bstr_lower(tmp_fname_noext); + struct bstr tmp_fname_ext = get_ext(dename); + struct bstr tmp_fname_trim = bstr_strip(tmp_fname_noext); + + // check what it is (most likely) + int type = test_ext(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; + } + + if (fuzz < 0) + goto next_sub; + + // we have a (likely) subtitle file + int prio = 0; + char *found_lang = NULL; + if (langs) { + if (bstr_startswith(tmp_fname_trim, f_fname_trim)) { + struct bstr lang = guess_lang_from_filename(tmp_fname_trim); + if (lang.len) { + for (int n = 0; langs[n]; n++) { + if (bstr_startswith0(lang, langs[n])) { + prio = 4; // matches the movie name + lang extension + found_lang = langs[n]; + break; + } + } + } + } + } + if (!prio && bstrcmp(tmp_fname_trim, f_fname_trim) == 0) + prio = 3; // matches the movie name + if (!prio && bstr_find(tmp_fname_trim, f_fname_trim) >= 0 && fuzz >= 1) + prio = 2; // contains the movie name + if (!prio) { + // doesn't contain the movie name + // don't try in the mplayer subtitle directory + if (!limit_fuzziness && fuzz >= 2) { + prio = 1; + } + } + + mp_dbg(log, "Potential external file: \"%s\" Priority: %d\n", + de->d_name, prio); + + if (prio) { + prio += prio; + char *subpath = mp_path_join_bstr(*slist, path, dename); + if (mp_path_exists(subpath)) { + MP_GROW_ARRAY(*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 = found_lang; + } 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); + } +} + +// 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 = global->opts; + struct subfn *slist = talloc_array_ptrtype(NULL, slist, 1); + int n = 0; + + // Load subtitles from current media directory + append_dir_subtitles(global, &slist, &n, mp_dirname(fname), fname, 0); + + if (opts->sub_auto >= 0) { + // Load subtitles in dirs specified by sub-paths option + if (opts->sub_paths) { + for (int i = 0; opts->sub_paths[i]; i++) { + char *path = mp_path_join_bstr(slist, mp_dirname(fname), + bstr0(opts->sub_paths[i])); + append_dir_subtitles(global, &slist, &n, bstr0(path), fname, 0); + } + } + + // Load subtitles in ~/.mpv/sub limiting sub fuzziness + char *mp_subdir = mp_find_config_file(NULL, global, "sub/"); + if (mp_subdir) + append_dir_subtitles(global, &slist, &n, bstr0(mp_subdir), fname, 1); + talloc_free(mp_subdir); + } + + // 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; +} -- cgit v1.2.3