Implement time-based resume and playback start.

This complements offset-based resume and playback start funcionality.
The implementation is global on both HWCODEC and SWCODEC.

Basically, if either the specified elapsed or offset are non-zero,
it indicates a mid-track resume.

To resume by time only, set elapsed to nonzero and offset to zero.
To resume by offset only, set offset to nonzero and elapsed to zero.

Which one the codec uses and which has priority is up to the codec;
however, using an elapsed time covers more cases:

* Codecs not able to use an offset such as VGM or other atomic
formats

* Starting playback at a nonzero elapsed time from a source that
contains no offset, such as a cuesheet

The change re-versions pretty much everything from tagcache to nvram.

Change-Id: Ic7aebb24e99a03ae99585c5e236eba960d163f38
Reviewed-on: http://gerrit.rockbox.org/516
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested: Michael Sevakis <jethead71@rockbox.org>

6 files changed, 7 insertions, 4 deletions

diff --git a/apps/plugins/alarmclock.c b/apps/plugins/alarmclock.c
index 79a676003a..ecafceddc7 100644
--- a/apps/plugins/alarmclock.c
+++ b/apps/plugins/alarmclock.c
@@ -109,6 +109,7 @@ static void resume_audio(void)
         if (rb->playlist_resume() != -1) {
             rb->playlist_resume_track(rb->global_status->resume_index,
                 rb->global_status->resume_crc32,
+                rb->global_status->resume_elapsed,
                 rb->global_status->resume_offset);
         }
     }
diff --git a/apps/plugins/alpine_cdc.c b/apps/plugins/alpine_cdc.c
index 653c968ffa..28bb8d8b7f 100644
--- a/apps/plugins/alpine_cdc.c
+++ b/apps/plugins/alpine_cdc.c
@@ -997,8 +997,8 @@ void set_play(void)
     }
     else
     {
-        print_scroll("audio_play(0)");
-        rb->audio_play(0);
+        print_scroll("audio_play(0, 0)");
+        rb->audio_play(0, 0);
     }
 }
 
diff --git a/apps/plugins/lib/playback_control.c b/apps/plugins/lib/playback_control.c
index 47921e52f2..1be234f70f 100644
--- a/apps/plugins/lib/playback_control.c
+++ b/apps/plugins/lib/playback_control.c
@@ -39,6 +39,7 @@ static bool play(void)
         {
             rb->playlist_resume_track(rb->global_status->resume_index,
                 rb->global_status->resume_crc32,
+                rb->global_status->resume_elapsed,
                 rb->global_status->resume_offset);
         }
     }
diff --git a/apps/plugins/lrcplayer.c b/apps/plugins/lrcplayer.c
index 6e0394fa51..392e78e77f 100644
--- a/apps/plugins/lrcplayer.c
+++ b/apps/plugins/lrcplayer.c
@@ -2684,6 +2684,7 @@ static int handle_button(void)
                 {
                     rb->playlist_resume_track(rb->global_status->resume_index,
                         rb->global_status->resume_crc32,
+                        rb->global_status->resume_elapsed,
                         rb->global_status->resume_offset);
                 }
             }
diff --git a/apps/plugins/pictureflow/pictureflow.c b/apps/plugins/pictureflow/pictureflow.c
index 51fe5ebfc5..bb7cec888f 100644
--- a/apps/plugins/pictureflow/pictureflow.c
+++ b/apps/plugins/pictureflow/pictureflow.c
@@ -2580,7 +2580,7 @@ play:
      * if shuffle, we can't predict the playing track easily, and for either
      * case the track list doesn't get auto scrolled*/
     if(!append)
-        rb->playlist_start(position, 0);
+        rb->playlist_start(position, 0, 0);
     old_playlist = center_slide.slide_index;
     old_shuffle = shuffle;
 }
diff --git a/apps/plugins/random_folder_advance_config.c b/apps/plugins/random_folder_advance_config.c
index 7f6018df4e..0b3532dde0 100644
--- a/apps/plugins/random_folder_advance_config.c
+++ b/apps/plugins/random_folder_advance_config.c
@@ -541,7 +541,7 @@ static int start_shuffled_play(void)
         }
     }
     rb->splash(HZ, "Done");
-    rb->playlist_start(0,0);
+    rb->playlist_start(0, 0, 0);
     return 1;
 }