These operations can only be used in limited circumstances and have
exactly one user. bufgettail especially seems of dubious value; how
often do you need to read N bytes from the end of a file without
changing the file position?
strip_tags() was the only function using them, to strip off ID3v1
and APE tags off the end of buffered tracks. This would save only
32-192 bytes per track -- if the container format uses APE/ID3v1.
It hardly seems worth the effort.
Change-Id: I8fc3c1408517eda6126e75e76d76daea904b50eb
Internally, buffering tries to load the entire album art file into the
audio buffer, which will fail if the file is larger than the buffer.
Playback.c interprets a file failing to buffer to mean that the buffer
is full, so it waits for more space and tries again. This results in a
deadlock since the file will never fit.
Change bufopen to return a new error condition when an image file will
not fit on the buffer because it is too large: ERR_BITMAP_TOO_LARGE.
Note that we arbitrarily set "too large" to be within 64KB of the
entire buffer size or larger, this could be adjusted if needed.
Change audio_load_albumart to pass through error messages from bufopen.
In playback.c, check to see why audio_load_albumart fails. If it fails
because the file is too large to buffer, simply ignore the file. If it
fails because the file would fit but the buffer is full, try again
later.
Change-Id: I66799ae26f124b495e1522fce7285332f4cf986f
Playback checked the files' presence before attempting to buffer
the track. Just get rid of that and save an extra open/close call.
It will find out if the path is bad when the metadata fails.
Fix some size_t/off_t conflation. No need to update plugin version
because no plugin actually uses bufopen().
Change-Id: I3db112449dc0b2eeb91c546f308880ac82494fc7
Does away the statically-allocated track list which frees quite
a fair amount of in-RAM size.
There's no compile-time hard track limit.
Recommended TODO (but not right away): Have data small enough use
the handle structure as its buffer data area. Almost the entire
handle structure is unused for simple allocations without any
associated filesystem path.
Change-Id: I74a4561e5a837e049811ac421722ec00dadc0d50
HAVE_IO_PRIORITY was defined for native targets with dircache.
It is already effectively disabled for the most part since dircache no
longer lowers its thread's I/O priority. It existed primarily for the
aforementioned configuration.
Change-Id: Ia04935305397ba14df34647c8ea29c2acaea92aa
It is trivial to obtain all required information from the allocated
handles without maintaining global indexes. In fact, it is less
complicated and increases general thread safety.
Other miscellaneous changes (some are nice to do at this time due to
required alterations, with some particularly more relevant than others):
* Handle value 0 will no longer be returned as a valid handle but all
failures will still return a negative value. Creates consistency with
buflib and removes the need to explicitly initialize them.
* Linking a new handle is delayed until explicitly
added by the code that called add_handle, keeping it invisible
until every operation succeeds, which is safer thread-wise. If anything
fails, the handle itself may just be abandoned rather than reqiring it
be freed.
* Dump the special handling to slow buffering when the PCM buffer
is low that calls PCM buffer functions. It doesn't seem to help much
of anything these days and it's a bit of a nasty hack to directly
tie those bits together. It can of course be put back (again!) if
there really is a need for it.
* Make data waiters ping the buffering thread more than just once if
the request is taking too long. Somehow I figured out how the requests
could get forgotten about but can't remember why months later after
making the change in my branch. :-)
* Neaten up some code by using (inline) functions and packing down
parameters; remember handle allocation and movement attributes in the
handle itself rather than figuring it out each time they're needed.
Change-Id: Ibf863370da3dd805132fc135e0ad104953365183
Reviewed-on: http://gerrit.rockbox.org/764
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested: Michael Sevakis <jethead71@rockbox.org>
It's not useful to do it since you need to write back the code to disk to be able to load it from memory, it also requires writing to an executable directory.
Keep it for the simulator for the sake of simulating.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29261 a1c6a512-1295-4272-9138-f99709370657
Playback now has a few albumart slots. Anything (most importantly: skins) can obtain such a slot.
The slot has fields for the size which is passed to bufopen then to image_load to buffer the albumart with the proper size.
Currently there's 1 slot. We can increase it for remotes if we want. Custom statusbar will increase it.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23209 a1c6a512-1295-4272-9138-f99709370657
Fix FS#8092 by flushing the audio when a rebuffer is needed.
Also add some comments here and there.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15816 a1c6a512-1295-4272-9138-f99709370657
The cover pictures are loaded from external bitmaps. JPEG and embedded art are not supported. The pictures will only be drawn on the main display. There is no resizing but it is possible to specify the WPS bitmap size in the bitmap names (e.g. cover.100x100.bmp).
The bitmaps are stored in the main buffer and read directly from there. Currently, duplicate bitmaps will simply be present several times in the buffer, but this will be improved.
To enable for a target, #define HAVE_ALBUMART in its config file.
For more information, see the wiki page: http://www.rockbox.org/wiki/AlbumArt.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15572 a1c6a512-1295-4272-9138-f99709370657
buffering.c and buffering.h implement the new buffering API. playback.c is translated to that API. For more information about the whole concept, see http://www.rockbox.org/wiki/MetadataOnBuffer.
There should be no major visible changes, but most existing bugs remain (though fixing them should be easier now that playback.c is a bit less complex) and there probably will be new ones. Please report any problem!
Next step is to adapt cuesheet support, which is partly disabled here, and of course fix as much bugs as possible.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15306 a1c6a512-1295-4272-9138-f99709370657
