Derivative of work by RobertGabrielJakabosky
http://lua-users.org/wiki/EmergencyGarbageCollector
I've only implemented the not enough memory part and
expanded this idea to adding a mechanism to signal
the OOM condition of the plugin buffer which allows us to only
grab the playback buffer after garbage collection fails
(SO THE MUSIC KEEPS PLAYING AS LONG AS POSSIBLE)
Change-Id: I684fb98b540ffc01f7ba324ab5b761ceb59b9f9b
add defines for sound functions
SOUND_VOLUME, SOUND_BALANCE, SOUND_CHANNELS, SOUND_STEREO_WIDTH ...
defines depend on target
require "sound_defines" to add them to rb.sound_settings[]
consolidates:
sound_set, sound_current, sound_default, sound_min, sound_max,
sound_unit, sound_pitch, sound_val2phys to a single function
rb.sound("name", setting, [value])
require "sound.lua" for old functionality
Change-Id: Ice695218aa433f4fcbb48fbd6b8a9bf29c994110
This library allows events to be subscribed / recieved within a lua script
most events in rb are synchronous so flags are set and later checked by a
secondary thread to make them (semi?) asynchronous.
There are a few caveats to be aware of:
FIRST, The main lua state is halted till the lua callback(s) are finished
Yielding will not return control to your script from within a callback
Also, subsequent callbacks may be delayed by the code in your lua callback
SECOND, You must store the value returned from the event_register function
you might get away with it for a bit but gc will destroy your callback
eventually if you do not store the event
THIRD, You only get one cb per event type
["action", "button", "custom", "playback", "timer"]
(Re-registration of an event overwrites the previous one)
Usage:
possible events =["action", "button", "custom", "playback", "timer"]
local evX = rockev.register("event", cb_function, [timeout / flags])
cb_function([id] [, data]) ... end
rockev.suspend(["event"/nil][true/false]) passing nil affects all events
stops event from executing, any but the last event before
re-enabling will be lost, passing false, unregistering or re-registering
an event will clear the suspend
rockev.trigger("event", [true/false], [id])
sets an event to triggered,
NOTE!, CUSTOM_EVENT must be unset manually
id is only passed to callback by custom and playback events
rockev.unregister(evX)
Use unregister(evX) to remove an event
Unregistering is not necessary before script end, it will be
cleaned up on script exit
Change-Id: Iea12a5cc0c0295b955dcc1cdf2eec835ca7e354d
Rockbox constants are auto generated by a perl script like the majority
of the plugin functions.
Constants are contained in rb_defines.lua, if the file exists it is auto loaded
by the lua state for backwards compatibility
Frees ~1k
Change-Id: I237700576c748f468249e501c839d89effca3f39
We have quite a bit of ram tied up in lua with our c libraries
I was searching for a way to free up some of this when I came
across read only tables in e-lua but that involved a lot of patching
through the source
Instead I came up with this..
it frees about 15k ram without much slowdown in code execution
since after a function gets called it is automatically added to the table
If you have a performance issue you can call the bind method
to bind a specific function or the whole table in one shot
for instance rb table
rb("lcd_clear") -- binds/returns function rb.lcd_clear()
rb(nil) -- binds every function in rb table + removes latebind metatable ..
-- added pairs and ipairs code from lua 5.2
-- cleaned up code + made more seamless
existing fields are now saved rather than overwritten when table is bound
Change-Id: I1c20e76b736c032dedc727d2e58928641e40191d
Allows saving of ram by reusing strings already stored in the binary
and storing a pointer instead of malloc and copy to get them inside
the lua state
Saves about 1.5K overall
Derivative of work by bogdanm
RAM optimizations: pseudo RO strings, functions in Flash
d54659b572
Change-Id: I21d6dcfa32523877efd9f70fb0f88f2a02872649
track elapsed is needed to use fast-forward and rewind effectively
track length might as well be added too..
Change-Id: I906c92eb5260164c6177d8c0a8ff879b1fad7898
We don't have the functionality in the viewer to run pre-compiled chunks
plus if anyone ever wants to add it its easy enough to remove the define
frees 3K
Change-Id: I8d2086e04b51e3ce147ab8741a7d354cb9bf1ade
In newer builds line markers prevent lua helper scripts
from grabbing some inputs especially _bool
This patch adds the -P switch
Inhibit generation of linemarkers in the output from the preprocessor.
This might be useful when running the preprocessor on something that
is not C code, and will be sent to a program which might be confused
by the linemarkers.
Change-Id: I66c3b099729f6651300f9fcf4670533a20cc90c1
This is a seemingly random bug that only affects (as far as I can tell)
arm devices it isn't actually random as code changes cause it to
appear/disappear based on alignment
Change-Id: I4cbc4370677959319f8589fe454e854c45623468
When loading a file, Lua may call the reader function again after it
returned end of input
https://www.lua.org/bugs.html#5.1.5-2
Change-Id: Ic2f4d727705a0b8f48ce792f6a9f7af25a503037
String constants were already expanded in the first macro
pcm functions were looking for stack position #1 when they needed stack pos #2
Change-Id: I7b4fb90953ab2395b77cbd550fdd257fafca6aae
The auto generated utf8/16 encode/decode functions did not work.
Upon implementing them correctly I found that lua handles the utf-8
form properly but I could not get utf-16 to work without crashing
maybe someone can come along later and implement utf-16 safe string
functions but for now utf-16 is removed.
Change-Id: I97a044e200dc27f683a45487cd93fce667c670c4
The way to call the pcm functions has changed
rb.pcm("option", var)
rb.pcm_set_frequency(freq) = becomes rb.pcm("pcmsetfrequency", freq)
added pcm.lua to the includes for conversion to old functions
if your script is broken by this change you simply add
`require("pcm")` to the top for the old functionality
added rb.pcm("calculatepeaks")
Change-Id: I092057b0c0b5575e567862661f122da1ca2680e8
Did not mean to wipe out these function when I consolidated audio
Made the regex for audio_ and playlist_ exact matches instead of fuzzy
Change-Id: I7537d1b494afb114c8b6333ea177b1e482f6b672
Adds %F -- %Y-%m-%d
Fixes possible buffer overflow when writing final \0
Frees a bit of code on NON-RTC targets
Change-Id: I1c2600a68ee88c6c99f411ae6646861578683f90
Rocklua was using the full fscanf implementation
to simply read %ld for the file:read("*n") function
wasting 1k on unneeded/unused functionality
Instead, I've implemented a filetol function to duplicate it
without the extra overhead using strtol which as an added bonus
ERANGE errors now resolve to LONG_MIN and LONGMAX instead of
integer overflow
filetol()
reads long int from an open file, skips preceding
whitespaces returns -1 if error, 1 on success.
*num set to LONG_MAX or LONG_MIN on overflow.
If number of digits is > than LUAI_MAXNUMBER2STR
filepointer will continue till the next non digit
but buffer will stop being filled with characters.
Preceding zero is ignored.
Change-Id: Ia42d0f73c63a894625bca4581e9b7e1cc7387fd2
Some of the lcd functions had support for multiple screens but this wasn't
very safe since the screen number wasn't bounded within the screens[] array
This adds support for all the lcd functions along with checking that screen#
is bounded properly, adds around 600 bytes to devices with a remote screen
devices without a remote screen lock to SCREEN_MAIN
Change-Id: I618bbc7b3919c7b0ff375fb2d71949d7cab43c87
rli_marshal and rli_copy allow the use of a custom lua function
instead of the built-ins, this custom function can signal to stop
before the whole image is iterated.
Originally it was checking for a return of 0
which was additional overhead for the built-in functions
(which never stop early) as well.
Now custom_transform sets the x & y deltas to 0 to indicate early
exit removing an extra 'if' per cycle and return from all of the
rli_transform functions
The lcd_xxx_bitmap functions all require x, y, w, h, screen these calls
have been consolidated into a single function get_bmp_bounds()
Change-Id: I88de3149c58d1bfb40e9d1a91341fb86cbd63b51
While luaL_addstring() works perfectly fine for the
final buffer once Lual_pushresult() is called
kbd_input doesn't display a previous input properly
since the buffer hasn't been finalized yet
Change-Id: Ic50acaa8b7b17077dec8750dd2b6382624e8a549
Removes unneeded functions from kbd_input
Consolidates message filling function for gui_syncyesno_run & do_menu
Change-Id: If3c3cea3cbf37a8dc52983c0db174de6d54b35f8
The way to call the playlist functions has changed
rb.playlist("option", var)
rb.playlist_add(filename) = becomes rb.playlist("add", filename)
added playlist.lua to the includes for conversion to old functions
if your script is broken by this change you simply add `require("playlist")`
to the top for the old functionality
added rb.playlist_tracks(dir, filename) to playlist.lua
this will allow you to add all tracks in a playlist.m3u8
to a lua table
Change-Id: I87fcc56be365d8495d214f069331b6ddbfbef1db
audio_play was removed from the rocklib I assume due to inconsistent
behavior I've readded it with a check for audio paused which instead
uses rewind/ff and then resumes audio
the way to call the audio functions has changed as well
rb.audio("option", var)
so rb.audio_play(0, 0) becomes rb.audio("play", 0, 0)
audio_audio_flush_and_reload_tracks becomes
rb.audio("flushandreloadtracks")
all functions except audio("getfilepos") return the previous (or still current)
status
added audio.lua to the includes for conversion to old functions
if your script is broken by this change you simply add `require("audio")`
to the top for the old functionality
Change-Id: I364adf0c85d9c12b98cde29c26fbe5ee05b9d331
Both of these functions modified the string in the lua stack
per lua manual:
'When a C function receives a string argument from Lua,
there are only two rules that it must observe: Not to pop the string
from the stack while accessing it and never to modify the string'
strip_extension will still work with old parameters
and is thus backwards compatible
strip_extension("filename")
create_numbered_filename has changed slightly and IS NOT backwards compatible
create_numbered_filename(path, prefix, suffix, [number])
(number defaults to -1)
Change-Id: I34cf7e2f6f691f33d5ac2b2e995855a171fb99b3
allows rocklib_img to be excluded if needed
stops rocklib_aux from generating redundant prototypes for
lcd_mono_bitmap[_part]
Change-Id: Ie208ad71ab5f9a7deb026dc01a5b0a0631a0d29c
