player: make resuming playlists less noisy in verbose mode

mp_find_config_file() will print the filename lookup and its result in
verbose mode. This is wanted, but gets inconvenient when it is done for
every playlist entry (for resuming).

Lookup the watch_later subdir only once and cache the result instead.

This drops the logic for loading the resume file from other locations,
which should generally be unnecessary, though might lead to confusion if
the user has mixed old and new config paths (which the user shouldn't).

Also add a mp_find_user_config_file() function for a more
straightforward and reliable way to get actual local configpaths,
instead of possibly global and unwritable locations.

Also, for symmetry, check the resume option in mp_load_playback_resume()
just like mp_check_playlist_resume() does.

3 files changed, 16 insertions, 15 deletions

diff --git a/player/configfiles.c b/player/configfiles.c
index 6806938a1a..0cd1d0d523 100644
--- a/player/configfiles.c
+++ b/player/configfiles.c
@@ -166,10 +166,10 @@ void mp_load_auto_profiles(struct MPContext *mpctx)
 
 #define MP_WATCH_LATER_CONF "watch_later"
 
-static char *mp_get_playback_resume_config_filename(struct mpv_global *global,
+static char *mp_get_playback_resume_config_filename(struct MPContext *mpctx,
                                                     const char *fname)
 {
-    struct MPOpts *opts = global->opts;
+    struct MPOpts *opts = mpctx->opts;
     char *res = NULL;
     void *tmp = talloc_new(NULL);
     const char *realpath = fname;
@@ -195,15 +195,14 @@ static char *mp_get_playback_resume_config_filename(struct mpv_global *global,
     for (int i = 0; i < 16; i++)
         conf = talloc_asprintf_append(conf, "%02X", md5[i]);
 
-    res = talloc_asprintf(tmp, MP_WATCH_LATER_CONF "/%s", conf);
-    res = mp_find_config_file(NULL, global, res);
-
-    if (!res) {
-        res = mp_find_config_file(tmp, global, MP_WATCH_LATER_CONF);
-        if (res)
-            res = talloc_asprintf(NULL, "%s/%s", res, conf);
+    if (!mpctx->cached_watch_later_configdir) {
+        mpctx->cached_watch_later_configdir =
+            mp_find_user_config_file(mpctx, mpctx->global, MP_WATCH_LATER_CONF);
     }
 
+    if (mpctx->cached_watch_later_configdir)
+        res = mp_path_join(NULL, mpctx->cached_watch_later_configdir, conf);
+
 exit:
     talloc_free(tmp);
     return res;
@@ -298,7 +297,7 @@ void mp_write_watch_later_conf(struct MPContext *mpctx)
 
     mp_mk_config_dir(mpctx->global, MP_WATCH_LATER_CONF);
 
-    conffile = mp_get_playback_resume_config_filename(mpctx->global, filename);
+    conffile = mp_get_playback_resume_config_filename(mpctx, filename);
     if (!conffile)
         goto exit;
 
@@ -342,7 +341,9 @@ exit:
 
 void mp_load_playback_resume(struct MPContext *mpctx, const char *file)
 {
-    char *fname = mp_get_playback_resume_config_filename(mpctx->global, file);
+    if (!mpctx->opts->position_resume)
+        return;
+    char *fname = mp_get_playback_resume_config_filename(mpctx, file);
     if (fname && mp_path_exists(fname)) {
         // Never apply the saved start position to following files
         m_config_backup_opt(mpctx->mconfig, "start");
@@ -365,8 +366,7 @@ struct playlist_entry *mp_check_playlist_resume(struct MPContext *mpctx,
     if (!mpctx->opts->position_resume)
         return NULL;
     for (struct playlist_entry *e = playlist->first; e; e = e->next) {
-        char *conf = mp_get_playback_resume_config_filename(mpctx->global,
-                                                            e->filename);
+        char *conf = mp_get_playback_resume_config_filename(mpctx, e->filename);
         bool exists = conf && mp_path_exists(conf);
         talloc_free(conf);
         if (exists)
diff --git a/player/core.h b/player/core.h
index ea7694d02a..055a48bda4 100644
--- a/player/core.h
+++ b/player/core.h
@@ -335,6 +335,8 @@ typedef struct MPContext {
     // playback rate. Used to avoid showing it multiple times.
     bool drop_message_shown;
 
+    char *cached_watch_later_configdir;
+
     struct screenshot_ctx *screenshot_ctx;
     struct command_ctx *command_ctx;
     struct encode_lavc_context *encode_lavc_ctx;
diff --git a/player/loadfile.c b/player/loadfile.c
index 40ed71d5fd..3dc0e0318a 100644
--- a/player/loadfile.c
+++ b/player/loadfile.c
@@ -1063,8 +1063,7 @@ static void play_current_file(struct MPContext *mpctx)
 
     mp_load_auto_profiles(mpctx);
 
-    if (opts->position_resume)
-        mp_load_playback_resume(mpctx, mpctx->filename);
+    mp_load_playback_resume(mpctx, mpctx->filename);
 
     load_per_file_options(mpctx->mconfig, mpctx->playing->params,
                           mpctx->playing->num_params);