This patch redoes the filesystem code from the FAT driver up to the
clipboard code in onplay.c.
Not every aspect of this is finished therefore it is still "WIP". I
don't wish to do too much at once (haha!). What is left to do is get
dircache back in the sim and find an implementation for the dircache
indicies in the tagcache and playlist code or do something else that
has the same benefit. Leaving these out for now does not make anything
unusable. All the basics are done.
Phone app code should probably get vetted (and app path handling
just plain rewritten as environment expansions); the SDL app and
Android run well.
Main things addressed:
1) Thread safety: There is none right now in the trunk code. Most of
what currently works is luck when multiple threads are involved or
multiple descriptors to the same file are open.
2) POSIX compliance: Many of the functions behave nothing like their
counterparts on a host system. This leads to inconsistent code or very
different behavior from native to hosted. One huge offender was
rename(). Going point by point would fill a book.
3) Actual running RAM usage: Many targets will use less RAM and less
stack space (some more RAM because I upped the number of cache buffers
for large memory). There's very little memory lying fallow in rarely-used
areas (see 'Key core changes' below). Also, all targets may open the same
number of directory streams whereas before those with less than 8MB RAM
were limited to 8, not 12 implying those targets will save slightly
less.
4) Performance: The test_disk plugin shows markedly improved performance,
particularly in the area of (uncached) directory scanning, due partly to
more optimal directory reading and to a better sector cache algorithm.
Uncached times tend to be better while there is a bit of a slowdown in
dircache due to it being a bit heavier of an implementation. It's not
noticeable by a human as far as I can say.
Key core changes:
1) Files and directories share core code and data structures.
2) The filesystem code knows which descriptors refer to same file.
This ensures that changes from one stream are appropriately reflected
in every open descriptor for that file (fileobj_mgr.c).
3) File and directory cache buffers are borrowed from the main sector
cache. This means that when they are not in use by a file, they are not
wasted, but used for the cache. Most of the time, only a few of them
are needed. It also means that adding more file and directory handles
is less expensive. All one must do in ensure a large enough cache to
borrow from.
4) Relative path components are supported and the namespace is unified.
It does not support full relative paths to an implied current directory;
what is does support is use of "." and "..". Adding the former would
not be very difficult. The namespace is unified in the sense that
volumes may be specified several times along with relative parts, e.g.:
"/<0>/foo/../../<1>/bar" :<=> "/<1>/bar".
5) Stack usage is down due to sharing of data, static allocation and
less duplication of strings on the stack. This requires more
serialization than I would like but since the number of threads is
limited to a low number, the tradoff in favor of the stack seems
reasonable.
6) Separates and heirarchicalizes (sic) the SIM and APP filesystem
code. SIM path and volume handling is just like the target. Some
aspects of the APP file code get more straightforward (e.g. no path
hashing is needed).
Dircache:
Deserves its own section. Dircache is new but pays homage to the old.
The old one was not compatible and so it, since it got redone, does
all the stuff it always should have done such as:
1) It may be update and used at any time during the build process.
No longer has one to wait for it to finish building to do basic file
management (create, remove, rename, etc.).
2) It does not need to be either fully scanned or completely disabled;
it can be incomplete (i.e. overfilled, missing paths), still be
of benefit and be correct.
3) Handles mounting and dismounting of individual volumes which means
a full rebuild is not needed just because you pop a new SD card in the
slot. Now, because it reuses its freed entry data, may rebuild only
that volume.
4) Much more fundamental to the file code. When it is built, it is
the keeper of the master file list whether enabled or not ("disabled"
is just a state of the cache). Its must always to ready to be started
and bind all streams opened prior to being enabled.
5) Maintains any short filenames in OEM format which means that it does
not need to be rebuilt when changing the default codepage.
Miscellaneous Compatibility:
1) Update any other code that would otherwise not work such as the
hotswap mounting code in various card drivers.
2) File management: Clipboard needed updating because of the behavioral
changes. Still needs a little more work on some finer points.
3) Remove now-obsolete functionality such as the mutex's "no preempt"
flag (which was only for the prior FAT driver).
4) struct dirinfo uses time_t rather than raw FAT directory entry
time fields. I plan to follow up on genericizing everything there
(i.e. no FAT attributes).
5) unicode.c needed some redoing so that the file code does not try
try to load codepages during a scan, which is actually a problem with
the current code. The default codepage, if any is required, is now
kept in RAM separarately (bufalloced) from codepages specified to
iso_decode() (which must not be bufalloced because the conversion
may be done by playback threads).
Brings with it some additional reusable core code:
1) Revised file functions: Reusable code that does things such as
safe path concatenation and parsing without buffer limitations or
data duplication. Variants that copy or alter the input path may be
based off these.
To do:
1) Put dircache functionality back in the sim. Treating it internally
as a different kind of file system seems the best approach at this
time.
2) Restore use of dircache indexes in the playlist and database or
something effectively the same. Since the cache doesn't have to be
complete in order to be used, not getting a hit on the cache doesn't
unambiguously say if the path exists or not.
Change-Id: Ia30f3082a136253e3a0eae0784e3091d138915c8
Reviewed-on: http://gerrit.rockbox.org/566
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested: Michael Sevakis <jethead71@rockbox.org>
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>
Also move the definition to config.h
Change-Id: I36bb5020c5e06b2344292bc05e8c13ccc7a6a1ff
Reviewed-on: http://gerrit.rockbox.org/234
Reviewed-by: Nils Wallménius <nils@rockbox.org>
This fix:
-fixes when the bookmark menu and submenus are displayed and hidden
in the context menu.
-'Create Bookmark' should be hidden when tracks are queued in
the playlist or nothing is currently playing (previously it was
never hidden)
-'List Bookmarks' should be hidden if and only if no bookmark
file exists for the current playlist (previously it was hidden
if tracks were queued or nothing was playing neither of which
hinder loading bookmarks)
-'Bookmarks' main menu should be hidden if both 'Create
Bookmarks' and 'List Bookmarks' submenus are hidden
-fixes a problem where the 'Bookmark Error' message was not always
displayed on bookmarking failure
-adds BOOKMARK_USB_CONNECTED return value to the bookmark functions
to distinguish if the bookmark list was exited due to a USB
connection.
-fixes other minor logic problems in the bookmarking functions
Change-Id: If6394b2e77f027773a7c94ffdcb52dbb15e2922b
Reviewed-on: http://gerrit.rockbox.org/177
Reviewed-by: Osborne Jacobs <ozziejacks@gmail.com>
Tested-by: Osborne Jacobs <ozziejacks@gmail.com>
Reviewed-by: Jonathan Gordon <rockbox@jdgordon.info>
Custom shortcuts which give the user fast access to regularly used files/folders/settings/whatever.
Thanks to Alexander Levin for the manual part of the patch
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30990 a1c6a512-1295-4272-9138-f99709370657
The loaded flag wasn't set and skin_backdrop_show() call was missing.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30846 a1c6a512-1295-4272-9138-f99709370657
* Playlists are treated similar to directories in the browser, they now open in the viewer when selected instead of automatically starting the playlist.
* Make the "Playlists" main menu item useful, it now displays the playlist catalog (and has been renamed accordingly)
* Default to storing playlists in the catalog
* Add a UI to move the catalog directory
(other minor stuff too)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30177 a1c6a512-1295-4272-9138-f99709370657
Set using the menu item in folder context menus, clear in the filebrowser settings.
Can be abused to start selecting a *file* (or have a folder selected) instead of a starting inside a folder by removing the trailing / in the .cfg
This only affects the file browser when it would open in / before (on boot, or when entereing after backing out of the browser before (*not* when exited with the menu action)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28206 a1c6a512-1295-4272-9138-f99709370657
Skins are now more self contained in the skin manager which in the future might allow on demand skin loading (i.e smaller skin buffers)
Skin backdrops are also managed more intelegently (fixes a bug where you can get a crazy backdrop loaded if a .sbs fails to load)
the rockbox_default rescue theme is now called rockbox_failsafe to better express what it actually is.
This commit hopefully/maybe fixes the heavily reported data aborts, so please check if you are getting them
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28073 a1c6a512-1295-4272-9138-f99709370657
Use host's functions for file i/o directly (open(), close() ,etc.), not the sim_* variants.
Some dir functions need to be wrapped still because we need to cache the parents dir's path (host's dirent doesn't let us know).
For the same reason (incompatibility) with host's dirent) detach some members from Rockbox' dirent struct and put it into an extra one,
the values can be retrieved via the new dir_get_info().
Get rid of the sim_ prefix for sleep as well and change the signature to unix sleep().
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27968 a1c6a512-1295-4272-9138-f99709370657
This is to a) to cleanup firmware/common and firmware/include a bit, but also b) for Rockbox as an application which should use the host system's c library and headers, separating makes it easy to exclude our files from the build.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25850 a1c6a512-1295-4272-9138-f99709370657
- combine its two context menus to one and
- make the ACTION_STD_MENU go to the main menu as it does in all other screens
- call playlist_viewer() via root_menu to reduce call depth and to be consistent with other screens (and for the above changes to be more flexible w.r.t to the following screen)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24791 a1c6a512-1295-4272-9138-f99709370657
- simplify the setting/skin relationship. settings are used as the fallback if it's not specified in the skin
- backdrop buffers are now in the skin buffer (which has also increased slightly to accomodate 1 backdrop for each skin and 2 full colour screens for bmps (up for 1.5))
- if no %X is specified in a skin then the backdrop setting will be used. use %Xd to explicitly disable a skin from displaying a backdrop
- the base skin can now specify a backdrop.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24366 a1c6a512-1295-4272-9138-f99709370657
* viewport_set_current_vp() because if a screen wants to not use the user setting it shouldn't be dealing with the viewport manager at all (other than to disable the bars)
* viewport_ui_vp_get_state() is unused (and not needed)
* viewport_get_current_vp() because you should be using set_defaults() instead.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23606 a1c6a512-1295-4272-9138-f99709370657
