gtkui: several fixes/improvements in playlist cover rendering

2 files changed, 6 insertions, 1 deletions

diff --git a/plugins/artwork/artwork.c b/plugins/artwork/artwork.c
index cf4b25e0..23d05886 100644
--- a/plugins/artwork/artwork.c
+++ b/plugins/artwork/artwork.c
@@ -90,7 +90,6 @@ static const char *get_default_cover (void) {
 int
 make_cache_dir_path (char *path, int size, const char *artist, int img_size) {
     const char *cache = getenv ("XDG_CACHE_HOME");
-
     int sz;
     
     if (img_size == -1) {
@@ -1484,4 +1483,5 @@ static DB_artwork_plugin_t plugin = {
     .reset = artwork_reset,
     .get_default_cover = get_default_cover,
     .get_album_art_sync = get_album_art_sync,
+    .make_cache_path = make_cache_path,
 };
diff --git a/plugins/artwork/artwork.h b/plugins/artwork/artwork.h
index 1c60475c..117e263d 100644
--- a/plugins/artwork/artwork.h
+++ b/plugins/artwork/artwork.h
@@ -10,6 +10,8 @@ typedef void (*artwork_callback) (const char *fname, const char *artist, const c
 typedef struct {
     DB_misc_t plugin;
     // returns filename of cached image, or NULL
+    // negative size has special meanings:
+    // -1: return default cover if not available (otherwise NULL will be returned)
     char* (*get_album_art) (const char *fname, const char *artist, const char *album, int size, artwork_callback callback, void *user_data);
 
     // this has to be called to clear queue on exit, before caller terminates
@@ -19,6 +21,9 @@ typedef struct {
 
     // synchronously get filename
     char* (*get_album_art_sync) (const char *fname, const char *artist, const char *album, int size);
+
+    // creates full path string for cache storage
+    void (*make_cache_path) (char *path, int size, const char *album, const char *artist, int img_size);
 } DB_artwork_plugin_t;
 
 #endif /*__ARTWORK_H*/