Added new shuffle repeat mode that reshuffles playlist before repeating. Also added new shuffled insert mode that randomly inserts selected track(s) somewhere between current track and end of playlist.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6861 a1c6a512-1295-4272-9138-f99709370657

10 files changed, 107 insertions, 29 deletions

diff --git a/apps/lang/english.lang b/apps/lang/english.lang
index dbeaa929e0..8464e06126 100644
--- a/apps/lang/english.lang
+++ b/apps/lang/english.lang
@@ -3111,3 +3111,8 @@ desc: in playlist menu, reshuffles the order in which songs are played
 eng: "Reshuffle"
 voice: "Reshuffle"
 new:
+
+id: LANG_INSERT_SHUFFLED
+desc: in onplay menu.  insert a track/playlist randomly into dynamic playlist
+eng: "Insert shuffled"
+new:
diff --git a/apps/onplay.c b/apps/onplay.c
index dbb2ba42b9..d1b5285faa 100644
--- a/apps/onplay.c
+++ b/apps/onplay.c
@@ -244,8 +244,8 @@ static bool view_playlist(void)
 /* Sub-menu for playlist options */
 static bool playlist_options(void)
 {
-    struct menu_item items[11]; 
-    struct playlist_args args[11]; /* increase these 2 if you add entries! */
+    struct menu_item items[12]; 
+    struct playlist_args args[12]; /* increase these 2 if you add entries! */
     int m, i=0, pstart=0, result;
     bool ret = false;
 
@@ -296,6 +296,11 @@ static bool playlist_options(void)
             args[i].queue = false;
             i++;
 
+            items[i].desc = ID2P(LANG_INSERT_SHUFFLED);
+            args[i].position = PLAYLIST_INSERT_SHUFFLED;
+            args[i].queue = false;
+            i++;
+         
             items[i].desc = ID2P(LANG_QUEUE);
             args[i].position = PLAYLIST_INSERT;
             args[i].queue = true;
diff --git a/apps/playlist.c b/apps/playlist.c
index 8c9d6d11c7..ce2818eded 100644
--- a/apps/playlist.c
+++ b/apps/playlist.c
@@ -149,7 +149,8 @@ static int randomise_playlist(struct playlist_info* playlist,
                               bool write);
 static int sort_playlist(struct playlist_info* playlist, bool start_current,
                          bool write);
-static int get_next_index(const struct playlist_info* playlist, int steps);
+static int get_next_index(struct playlist_info* playlist, int steps,
+                          int repeat_mode);
 static void find_and_set_playlist_index(struct playlist_info* playlist,
                                         unsigned int seek);
 static int compare(const void* p1, const void* p2);
@@ -399,13 +400,15 @@ static int add_indices_to_playlist(struct playlist_info* playlist,
 /*
  * Add track to playlist at specified position.  There are three special
  * positions that can be specified:
- *     PLAYLIST_PREPEND      - Add track at beginning of playlist
- *     PLAYLIST_INSERT       - Add track after current song.  NOTE: If there
- *                             are already inserted tracks then track is added
- *                             to the end of the insertion list.
- *     PLAYLIST_INSERT_FIRST - Add track immediately after current song, no
- *                             matter what other tracks have been inserted.
- *     PLAYLIST_INSERT_LAST  - Add track to end of playlist
+ *     PLAYLIST_PREPEND         - Add track at beginning of playlist
+ *     PLAYLIST_INSERT          - Add track after current song.  NOTE: If
+ *                                there are already inserted tracks then track
+ *                                is added to the end of the insertion list
+ *     PLAYLIST_INSERT_FIRST    - Add track immediately after current song, no
+ *                                matter what other tracks have been inserted
+ *     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
  */
 static int add_track_to_playlist(struct playlist_info* playlist,
                                  const char *filename, int position,
@@ -459,6 +462,24 @@ static int add_track_to_playlist(struct playlist_info* playlist,
 
             flags = PLAYLIST_INSERT_TYPE_APPEND;
             break;
+        case PLAYLIST_INSERT_SHUFFLED:
+        {
+            int offset;
+            int n = playlist->amount -
+                rotate_index(playlist, playlist->index);
+            
+            if (n > 0)
+                offset = rand() % n;
+            else
+                offset = 0;
+
+            position = playlist->index + offset + 1;
+            if (position >= playlist->amount)
+                position -= playlist->amount;
+
+            insert_position = position;
+            break;
+        }
     }
     
     if (queue)
@@ -807,7 +828,8 @@ static int sort_playlist(struct playlist_info* playlist, bool start_current,
  * returns the index of the track that is "steps" away from current playing
  * track.
  */
-static int get_next_index(const struct playlist_info* playlist, int steps)
+static int get_next_index(struct playlist_info* playlist, int steps,
+                          int repeat_mode)
 {
     int current_index = playlist->index;
     int next_index    = -1;
@@ -815,8 +837,18 @@ static int get_next_index(const struct playlist_info* playlist, int steps)
     if (playlist->amount <= 0)
         return -1;
 
-    switch (global_settings.repeat_mode)
+    if (repeat_mode == -1)
+        repeat_mode = global_settings.repeat_mode;
+
+    if (repeat_mode == REPEAT_SHUFFLE &&
+        (!global_settings.playlist_shuffle || playlist->amount <= 1))
+        repeat_mode = REPEAT_ALL;
+
+    switch (repeat_mode)
     {
+        case REPEAT_SHUFFLE:
+            /* Treat repeat shuffle just like repeat off.  At end of playlist,
+               play will be resumed in playlist_next() */
         case REPEAT_OFF:
         {
             current_index = rotate_index(playlist, current_index);
@@ -1634,7 +1666,13 @@ int playlist_start(int start_index, int offset)
 bool playlist_check(int steps)
 {
     struct playlist_info* playlist = &current_playlist;
-    int index = get_next_index(playlist, steps);
+    int index = get_next_index(playlist, steps, -1);
+
+    if (index < 0 && steps >= 0 &&
+        global_settings.repeat_mode == REPEAT_SHUFFLE)
+        /* shuffle repeat is the same as repeat all for check purposes */
+        index = get_next_index(playlist, steps, REPEAT_ALL);
+
     return (index >= 0);
 }
 
@@ -1649,7 +1687,7 @@ char* playlist_peek(int steps)
     int index;
     bool control_file;
 
-    index = get_next_index(playlist, steps);
+    index = get_next_index(playlist, steps, -1);
     if (index < 0)
         return NULL;
 
@@ -1705,7 +1743,7 @@ int playlist_next(int steps)
         /* We need to delete all the queued songs */
         for (i=0, j=steps; i<j; i++)
         {
-            index = get_next_index(playlist, i);
+            index = get_next_index(playlist, i, -1);
             
             if (playlist->indices[index] & PLAYLIST_QUEUE_MASK)
             {
@@ -1715,7 +1753,25 @@ int playlist_next(int steps)
         }
     }
 
-    index = get_next_index(playlist, steps);
+    index = get_next_index(playlist, steps, -1);
+
+    if (index < 0)
+    {
+        /* end of playlist... or is it */
+        if (global_settings.repeat_mode == REPEAT_SHUFFLE &&
+            global_settings.playlist_shuffle &&
+            playlist->amount > 1)
+        {
+            /* Repeat shuffle mode.  Re-shuffle playlist and resume play */
+            playlist->first_index = global_settings.resume_first_index = 0;
+            sort_playlist(playlist, false, false);
+            randomise_playlist(playlist, current_tick, false, true);
+            playlist_start(0, 0);
+        }
+
+        return index;
+    }
+
     playlist->index = index;
 
     if (playlist->last_insert_pos >= 0 && steps > 0)
diff --git a/apps/playlist.h b/apps/playlist.h
index b5a6e17426..5346cc8663 100644
--- a/apps/playlist.h
+++ b/apps/playlist.h
@@ -118,7 +118,8 @@ enum {
     PLAYLIST_PREPEND = -1,
     PLAYLIST_INSERT = -2,
     PLAYLIST_INSERT_LAST = -3,
-    PLAYLIST_INSERT_FIRST = -4
+    PLAYLIST_INSERT_FIRST = -4,
+    PLAYLIST_INSERT_SHUFFLED = -5
 };
 
 enum {
diff --git a/apps/screens.c b/apps/screens.c
index 1ae7030822..81366141bb 100644
--- a/apps/screens.c
+++ b/apps/screens.c
@@ -585,9 +585,13 @@ bool quick_screen(int context, int button)
                     case REPEAT_ONE:
                         ptr = str(LANG_REPEAT_ONE);
                         break;
+        
+                    case REPEAT_SHUFFLE:
+                        ptr = str(LANG_SHUFFLE);
+                        break;
                 }
         
-                lcd_getstringsize(str(LANG_REPEAT),&w,&h);
+                lcd_getstringsize(str(LANG_SHUFFLE),&w,&h);
                 lcd_putsxy(LCD_WIDTH - w, LCD_HEIGHT/2 - h*2, str(LANG_REPEAT));
                 lcd_putsxy(LCD_WIDTH - w, LCD_HEIGHT/2 - h, str(LANG_F2_MODE));
                 lcd_putsxy(LCD_WIDTH - w, LCD_HEIGHT/2, ptr);
diff --git a/apps/settings.c b/apps/settings.c
index 77bb4cdbf4..60e41fcfdd 100644
--- a/apps/settings.c
+++ b/apps/settings.c
@@ -203,7 +203,7 @@ static const struct bit_entry rtc_bits[] =
     {16 | SIGNED, S_O(resume_first_index), 0, NULL, NULL },
     {32 | SIGNED, S_O(resume_offset), -1, NULL, NULL },
     {32 | SIGNED, S_O(resume_seed), -1, NULL, NULL },
-    {2, S_O(repeat_mode), REPEAT_ALL, "repeat", "off,all,one" },
+    {2, S_O(repeat_mode), REPEAT_ALL, "repeat", "off,all,one,shuffle" },
     /* LCD */
     {6, S_O(contrast), 40, "contrast", NULL },
 #ifdef CONFIG_BACKLIGHT
diff --git a/apps/settings.h b/apps/settings.h
index 7e0be44c41..bb4f5fbf32 100644
--- a/apps/settings.h
+++ b/apps/settings.h
@@ -224,7 +224,7 @@ struct user_settings
 
     /* misc options */
 
-    int repeat_mode;   /* 0=off 1=repeat all 2=repeat one  */
+    int repeat_mode;   /* 0=off 1=repeat all 2=repeat one 3=shuffle */
     int dirfilter;     /* 0=display all, 1=only supported, 2=only music,
                           3=dirs+playlists, 4=ID3 database */
     bool sort_case;    /* dir sort order: 0=case insensitive, 1=sensitive */
@@ -387,7 +387,8 @@ extern const char rec_base_directory[];
 #define SETTINGS_ALL 3 /* both */
 
 /* repeat mode options */
-enum { REPEAT_OFF, REPEAT_ALL, REPEAT_ONE, NUM_REPEAT_MODES };
+enum { REPEAT_OFF, REPEAT_ALL, REPEAT_ONE, REPEAT_SHUFFLE,
+NUM_REPEAT_MODES };
 
 /* dir filter options */
 /* Note: Any new filter modes need to be added before NUM_FILTER_MODES.
diff --git a/apps/settings_menu.c b/apps/settings_menu.c
index efca1a85fb..b10c7d32ab 100644
--- a/apps/settings_menu.c
+++ b/apps/settings_menu.c
@@ -584,12 +584,13 @@ static bool repeat_mode(void)
     static const struct opt_items names[] = { 
         { STR(LANG_OFF) },
         { STR(LANG_REPEAT_ALL) },
-        { STR(LANG_REPEAT_ONE) }
+        { STR(LANG_REPEAT_ONE) },
+        { STR(LANG_SHUFFLE) },
     };
     int old_repeat = global_settings.repeat_mode;
 
     result = set_option( str(LANG_REPEAT), &global_settings.repeat_mode,
-                         INT, names, 3, NULL );
+                         INT, names, 4, NULL );
 
     if (old_repeat != global_settings.repeat_mode)
         audio_flush_and_reload_tracks();
diff --git a/apps/status.c b/apps/status.c
index ac11c17e1b..535337e8c1 100644
--- a/apps/status.c
+++ b/apps/status.c
@@ -260,6 +260,7 @@ void status_draw(bool force_redraw)
                 break;
 
             case REPEAT_ALL:
+            case REPEAT_SHUFFLE:
                 statusbar_icon_play_mode(Icon_Repeat);
                 break;
         }
diff --git a/firmware/mpeg.c b/firmware/mpeg.c
index e4ea8d67e7..092447fe2d 100644
--- a/firmware/mpeg.c
+++ b/firmware/mpeg.c
@@ -862,14 +862,15 @@ static void stop_playing(void)
 
 static void update_playlist(void)
 {
-    int index;
-    struct trackdata *track;
-
     if (num_tracks_in_memory() > 0)
     {
-        track = get_trackdata(0);
-        index = playlist_next(track->id3.index);
-        track->id3.index = index;
+        struct trackdata *track = get_trackdata(0);
+        track->id3.index = playlist_next(track->id3.index);
+    }
+    else
+    {
+        /* End of playlist */
+        playlist_next(playlist_amount());
     }
 }
 
@@ -1189,6 +1190,9 @@ static void mpeg_thread(void)
                     if (new_file(1) < 0) {
                         DEBUGF("No more files to play\n");
                         filling = false;
+
+                        update_playlist();
+                        current_track_counter++;
                     } else {
                         /* Make it read more data */
                         filling = true;