Accept FS#6464 by Chris Taylor. Adds a "Play Next" playlist insertion

option which replaces the current playlist with the new selection but
keeps the current track queued so playback doesnt stop. (minor fixes by
me)


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11842 a1c6a512-1295-4272-9138-f99709370657

apps/lang/english.lang

@@ -10442,3 +10442,17 @@
     *: "Clear Time?"
   </voice>
 </phrase>
+<phrase>
+  id: LANG_REPLACE
+  desc: in onplay menu.  Replace the current playlist with a new one.
+  user:
+  <source>
+    *: "Play Next"
+  </source>
+  <dest>
+    *: "Play Next"
+  </dest>
+  <voice>
+    *: "Play Next"
+  </voice>
+</phrase>

apps/onplay.c

@@ -368,6 +368,11 @@ static bool playlist_options(void)
             args[i].position = PLAYLIST_INSERT_SHUFFLED;
             args[i].queue = true;
             i++;
+
+            items[i].desc = ID2P(LANG_REPLACE);
+            args[i].position = PLAYLIST_REPLACE;
+            args[i].queue = false;
+            i++;
         }
         else if (((selected_file_attr & TREE_ATTR_MASK) == TREE_ATTR_MPA) ||
                  (selected_file_attr & ATTR_DIRECTORY))

apps/playlist.c

@@ -560,6 +560,33 @@ exit:
     return result;
 }
 
+/*
+ * Removes all tracks, from the playlist, leaving the presently playing
+ * track queued.
+ */
+int remove_all_tracks(struct playlist_info *playlist)
+{
+    int result;
+
+    if (playlist == NULL)
+        playlist = &current_playlist;
+
+    while (playlist->index > 0)
+        if ((result = remove_track_from_playlist(playlist, 0, true)) < 0)
+            return result;
+
+    while (playlist->amount > 1)
+        if ((result = remove_track_from_playlist(playlist, 1, true)) < 0)
+            return result;
+
+    if (playlist->amount == 1) {
+        playlist->indices[0] |= PLAYLIST_QUEUED;
+    }
+
+    return 0;
+}
+
+
 /*
  * Add track to playlist at specified position.  There are five special
  * positions that can be specified:
@@ -572,6 +599,8 @@ exit:
  *     PLAYLIST_INSERT_LAST     - Add track to end of playlist
  *     PLAYLIST_INSERT_SHUFFLED - Add track at some random point between the
  *                                current playing track and end of playlist
+ *     PLAYLIST_REPLACE         - Erase current playlist, Cue the current track
+ *                                and inster this track at the end.
  */
 static int add_track_to_playlist(struct playlist_info* playlist,
                                  const char *filename, int position,
@@ -648,6 +677,12 @@ static int add_track_to_playlist(struct playlist_info* playlist,
                 position = insert_position = (rand() % (playlist->amount+1));
             break;
         }
+        case PLAYLIST_REPLACE:
+            if (remove_all_tracks(playlist) < 0)
+                return -1;
+    
+            position = insert_position = playlist->index + 1;
+            break;
     }
     
     if (queue)
@@ -2860,6 +2895,14 @@ int playlist_insert_directory(struct playlist_info* playlist,
         return -1;
     }
 
+    if (position == PLAYLIST_REPLACE)
+    {
+        if (remove_all_tracks(playlist) == 0)
+            position = PLAYLIST_INSERT_LAST;
+        else
+            return -1;
+    }
+
     if (queue)
         count_str = str(LANG_PLAYLIST_QUEUE_COUNT);
     else
@@ -2871,7 +2914,7 @@ int playlist_insert_directory(struct playlist_info* playlist,
     context.position = position;
     context.queue = queue;
     context.count = 0;
-
+    
     cpu_boost(true);
 
     result = playlist_directory_tracksearch(dirname, recurse,
@@ -2941,6 +2984,13 @@ int playlist_insert_playlist(struct playlist_info* playlist, char *filename,
 
     display_playlist_count(count, count_str);
 
+    if (position == PLAYLIST_REPLACE)
+    {
+        if (remove_all_tracks(playlist) == 0)
+            position = PLAYLIST_INSERT_LAST;
+        else return -1;
+    }
+
     cpu_boost(true);
 
     while ((max = read_line(fd, temp_buf, sizeof(temp_buf))) > 0)

apps/playlist.h

@@ -48,7 +48,8 @@ enum {
     PLAYLIST_INSERT = -2,
     PLAYLIST_INSERT_LAST = -3,
     PLAYLIST_INSERT_FIRST = -4,
-    PLAYLIST_INSERT_SHUFFLED = -5
+    PLAYLIST_INSERT_SHUFFLED = -5,
+    PLAYLIST_REPLACE = -6
 };
 
 enum {
@@ -163,5 +164,6 @@ int playlist_save(struct playlist_info* playlist, char *filename);
 int playlist_directory_tracksearch(const char* dirname, bool recurse,
                                    int (*callback)(char*, void*),
                                    void* context);
+int remove_all_tracks(struct playlist_info *playlist);
 
 #endif /* __PLAYLIST_H__ */

apps/tagtree.c

@@ -1468,6 +1468,12 @@ static bool insert_all_playlist(struct tree_context *c, int position, bool queue
         return false;
     }
     
+    if (position == PLAYLIST_REPLACE)
+    {
+        if (remove_all_tracks(NULL) == 0)
+            position = PLAYLIST_INSERT_LAST;
+        else return -1;    }
+
     if (position == PLAYLIST_INSERT_FIRST)
     {
         from = c->filesindir - 1;

docs/CREDITS

@@ -256,3 +256,4 @@ Robert Carboneau
 Ye Wei
 Bryan Childs
 Mike Schmitt
+Chris Taylor