Commit Graph

1245 Commits

Author SHA1 Message Date
Dan Halbert 80ae14202a
Merge pull request #6416 from FoamyGuy/display_brightness_pwm
display brightness pwm 500hz frequency
2022-06-05 23:52:42 -04:00
foamyguy 260994d16e Merge branch 'main' into display_brightness_pwm 2022-06-04 11:32:15 -05:00
foamyguy c9c864a4f7 fix off by one right and bottom edges of tilegrid.contains() 2022-06-03 17:51:33 -05:00
foamyguy 6831dd8aaa return expression formatting 2022-06-03 17:04:53 -05:00
foamyguy 87f4cd6bca
return expression instead of if statement
Co-authored-by: Scott Shawcroft <scott@tannewt.org>
2022-06-03 16:21:50 -05:00
foamyguy ffc451b338 argument for backlight_pwm_frequency and use it in pyportal titano build 2022-05-28 12:01:05 -05:00
foamyguy db318726a2 tilegrid.contains() function 2022-05-27 18:05:44 -05:00
Scott Shawcroft 9d10a3da66
Conditionalize LTO 2022-05-27 12:59:54 -07:00
Dan Halbert d631ec38c6
Merge pull request #6407 from tannewt/dotenv
Add dotenv read support
2022-05-26 12:11:33 -04:00
Scott Shawcroft ef3c56816a
Fix two consecutive matches 2022-05-25 15:54:26 -07:00
Dan Halbert 1fb210bd40
Merge pull request #5491 from pypewpew/remove-gamepadshift
Remove gamepadshift module
2022-05-25 13:58:06 -04:00
Radomir Dopieralski c0152e7dab Remove gamepadshift module
Everything should be using the keypad module instead.

Note: there are several boards that still had gamepadshift enabled. I
did not contact their authors to make sure they already switched to
keypad in their code and documentation. We should probably wait with
merging this for their go ahead.
2022-05-25 00:48:55 +02:00
Scott Shawcroft 22cada10fa
Fix 64bit builds 2022-05-23 11:29:30 -07:00
Scott Shawcroft a6b60d2083
Merge remote-tracking branch 'adafruit/main' into dotenv 2022-05-23 11:23:20 -07:00
foamyguy 6b04b7efc8 display brightness pwm 500hz frequency 2022-05-21 12:09:23 -05:00
Dan Halbert 309dab4c75 merge 7.3.0-rc.1 changes to main 2022-05-20 15:37:56 -04:00
Dan Halbert f63b26c534 address jepler's comments and further squeezes 2022-05-20 10:10:55 -04:00
Dan Halbert a01dec1df9 message consolidation and more use of validators 2022-05-19 15:38:37 -04:00
Scott Shawcroft a30de85d57
Add dotenv read support
os.getenv() will use it (when available) to load variables from
/.env

This will also be useful when we need secrets or config for
CircuitPython outside of the VM (like WiFi credentials.)

Fixes #4212
2022-05-18 14:01:35 -07:00
Scott Shawcroft f975c97c63
Merge pull request #6363 from FoamyGuy/hidden_vectorio
Hidden vectorio
2022-05-18 09:00:13 -07:00
Dan Halbert 4487f61404 Restore automatic gc_collect() after an import 2022-05-18 11:37:13 -04:00
foamyguy 1c564764d6 use draw protocol impl in parent hidden too 2022-05-08 12:14:28 -05:00
foamyguy b6a5f421a9 use draw protocol impl 2022-05-08 12:02:59 -05:00
foamyguy 330e01d8e0 handle groups inside of groups with vectorio hidden 2022-05-07 12:27:36 -05:00
foamyguy c77dc3c828 code format 2022-05-07 11:59:26 -05:00
foamyguy d1aab89a59 remove prints and extra whitespace 2022-05-07 11:57:27 -05:00
foamyguy b03968aee5 hide vectorio objects if their containing group is hidden 2022-05-07 11:50:40 -05:00
foamyguy c8a98d1a18 Merge branch 'adafruit_main' into hidden_vectorio 2022-05-07 10:25:34 -05:00
Jeff Epler 030d5fefa0
Ignore SH1107 quirk if not 1bpp 2022-05-03 09:23:36 -05:00
Dan Halbert 3a8fb4e956
Merge pull request #5852 from jepler/floppy
Add floppyio
2022-04-26 11:40:19 -04:00
Dan Halbert 0642917cf7
Merge pull request #6270 from FoamyGuy/tilegrid_bitmap_property
adding bitmap property to TileGrid
2022-04-25 09:09:28 -04:00
Jeff Epler df5f7bc765
MP3Decoder: better handle indicating end of mp3 audio data to caller
The old formulation
 * wouldn't work if there were ID3 tags at the end
 * would choose whether to background-refill the inbuf
   based on a check before skipping to the next sync word, which
   could be incorrect.

I think it was aspect "B" that ended up triggering the erroneous EOF
problem fixed in the prior commit. This would depend on specific data
sizes and offsets occuring in the file such that a read would be
scheduled but then the buffer would be filled and left 100% full by
find_sync_word(). It's just lucky(?) that a particular person produced
such a file, and/or many files produced by Audacity have those
characteristics.
2022-04-22 14:11:02 -05:00
Jeff Epler 1841af90e2
Don't erroneously set EOF flag if there was room to read 0 bytes 2022-04-22 14:11:01 -05:00
foamyguy 16b81c855d adding bitmap property to TileGrid 2022-04-09 11:26:36 -05:00
foamyguy 666a5ff04c trying to make vectorio shape hidable 2022-04-09 10:09:46 -05:00
Jeff Epler f7be4345d9
Merge remote-tracking branch 'origin/main' into floppy 2022-04-07 08:37:46 -05:00
Dan Halbert 2693a4cfe1
Merge pull request #6069 from gamblor21/uzlib-module
zlib Module
2022-04-06 12:06:44 -04:00
Dan Halbert 83e1b5b058
Merge pull request #6248 from jepler/refactor-keypad
refactor keypad to share more code; fix initial keys pressed
2022-04-06 09:37:43 -04:00
Dan Halbert 359d8e5773
Merge pull request #6234 from jepler/merge-7.2.x
Merge 7.2.x
2022-04-05 16:53:22 -04:00
Jeff Epler d7c86c0e3e
refactor keypad to share more code
This saves 444 bytes on the pygamer build (both commits taken together)

testing performed:
 * pygamer (samd51) with ShiftRegisterKeys
 * macropad (rp2040) with Keys
 * UM feather s2 (esp32-s2) with KeyMatrix

Result:
 * all ports still worked nicely
 * keys held down at start always registered (>2 trials all boards, >100 trials esp32-s2)
 * keys held down are immediately registered after reset() (>100 trials esp32-s2)
 * double .reset() is OK, accessing .events throws (only tested esp32-s2)
2022-04-05 14:50:30 -05:00
Jeff Epler 203dad11bf
keypad: scan immediately on construct, .reset() 2022-04-05 14:50:30 -05:00
Jeff Epler fe98248a3d
Merge remote-tracking branch 'origin/7.2.x' into merge-7.2.x 2022-04-05 08:45:13 -05:00
Reece Robinson 4b0f80f081 Enable support for extended HID usage page and usage. Related to Support HID Usage Pages and Usages >255 #5529 2022-04-05 13:54:07 +12:00
Jeff Epler 683ece76db
MP3Decoder: Accurately inform when no more data
Some audio implementations, notably samd, really don't like it when
you return 0 samples of data. This was the case when reaching the
end of an MP3 file.

Now, we read forward in an MP3 file to the next sync word during
"get_buffer", so that we can accurately return GET_BUFFER_DONE when the
NEXT call WOULD HAVE resulted in 0 samples.

Tested with @gamblor21's "laugh.mp3" file on a Trellis M4 Express.
2022-04-04 09:16:27 -05:00
Mark 8ed7b114cd
Merge branch 'main' into uzlib-module 2022-04-03 11:48:37 -05:00
gamblor21 7d7e66f60f Fix no scaled framebuffer display 2022-03-23 17:37:56 -05:00
gamblor21 f9d7f46d67 Removing DecompIO 2022-03-23 17:02:58 -05:00
foamyguy fe8b9728e7 color index for vectorio shapes. 2022-03-19 11:30:37 -05:00
foamyguy 90fadc58fd implement color_number argument for vectorio.Rectangle 2022-03-18 18:28:29 -05:00
Scott Shawcroft dcc3ec171e
Merge remote-tracking branch 'adafruit/7.2.x' into merge_7.2.2 2022-03-15 13:56:11 -07:00
Scott Shawcroft 32ac396a41
Further refine autoreload
This unifies the delay into the post-run delay that also waits
for user input and fake sleep. This ensures we always delay.
Previous code would only delay if the code.py was running when
autoreload was triggered. Now it will always delay.

We also now suspend autoreload when a USB write starts and then
resume on completion. This should prevent reloading in between
sectors of a single write.
2022-03-14 16:49:30 -07:00
Dan Halbert e4cd9690f1 rework auto-reload delay logic 2022-03-11 14:03:04 -05:00
Scott Shawcroft 00dcf6bd03
Tweaks from review 2022-03-11 10:51:50 -08:00
Scott Shawcroft 83593a1558
Start of USB host API
This allows you to list and explore connected USB devices. It
only stubs out the methods to communicate to endpoints. That will
come in a follow up once TinyUSB has it. (It's in progress.)

Related to #5986
2022-03-07 18:07:25 -08:00
Scott Shawcroft 08b44eade5
Merge pull request #6114 from pewpew-game/displayio-9bit
Add support for 9-bit mode to displayio.FourWire
2022-03-04 16:55:02 -08:00
Radomir Dopieralski 102ee716a7 Add support for 9-bit mode to displayio.FourWire
If the ``command`` pin is None, that information will instead be
sent as a ninth bit in the SPI transactions.

Fix #6109
2022-03-04 22:59:17 +01:00
Tsutomu IKEGAMI c9aa4527a9 Fix freeze on bitmaptools.dither 2022-03-04 17:06:07 +09:00
Dan Halbert a45f9a83ea Merge remote-tracking branch 'adafruit/7.2.x' into merge-7.2.x-to-main 2022-02-24 13:07:56 -05:00
Kevin Matocha 790af2d9a6 fix REPL terminal garbled characters upon code.py finished 2022-02-21 14:58:16 -06:00
Kevin Matocha 6b2266b240 retains REPL terminal data after display.show(None) when terminal size is not changed 2022-02-21 10:33:48 -06:00
Kevin Matocha 03f42406d3 updated code so the REPL will retain its text if not resized when code stops 2022-02-21 10:33:08 -06:00
Michael Himing 4bd64885b4 msgpack.unpack requires a readable stream 2022-02-21 09:16:36 +11:00
gamblor21 664e02535b Renaming and documentation 2022-02-20 15:32:44 -06:00
gamblor21 ba229f1007 Initial commit of uzlib module 2022-02-19 10:41:42 -06:00
Dan Halbert fe6e03f504
Merge pull request #6013 from tannewt/esp_ble_gatt_client
Add S3 GATT client support
2022-02-17 16:02:11 -05:00
Tod Kurt 98ff9957fc appease ci 2022-02-10 17:14:07 -08:00
Tod Kurt 17440ec10c fix #6015 2022-02-10 16:10:05 -08:00
Scott Shawcroft 8958e7ef08
Add S3 GATT client support
This allows you to connect to GATT services on the other device.
It also adds connection initiation (GAP central).

More progress on #5926
2022-02-10 11:31:57 -08:00
Scott Gauche 3b418dbddc change half_duplex to be on spi construct 2022-02-08 21:37:38 -05:00
Jeff Epler 07e710b0a0
Merge remote-tracking branch 'origin/main' into floppy 2022-02-04 09:01:36 -06:00
Dan Halbert a39f0cfede
Merge pull request #5977 from prplz/bitbang-i2c
Bitbang i2c: switch scl to input for reading
2022-02-03 18:34:49 -05:00
Dan Halbert 4dc9b00221
Merge pull request #5954 from kmatch98/repl_wrangler
Expose display’s root_group, add function to resize REPL terminal
2022-02-02 15:36:22 -05:00
Michael Himing 5472f41860 Bitbang i2c: switch scl to input for reading 2022-02-02 22:54:35 +11:00
gamblor21 9cc470677e merge 2022-02-01 20:31:13 -06:00
gamblor21 afb04f8378 Fix to i2c code 2022-02-01 20:27:54 -06:00
Mark 5972fdc108
Merge branch 'main' into is31pixelbuf 2022-02-01 13:59:28 -06:00
Scott Shawcroft 2964e966b1
Merge pull request #5958 from dhalbert/i2c-common-hal-write-read
I2c common hal write read
2022-02-01 11:08:50 -08:00
Dan Halbert 0b26dba44d
Merge pull request #5955 from prplz/is31fl3741
Only enable is31fl3741 for led glasses board
2022-02-01 12:55:31 -05:00
Kevin Matocha 0290fc35d2 Removing some unnecessary files that were changed 2022-02-01 08:28:40 -06:00
Dan Halbert cc410ad6a3 common-hal I2C combined write_read 2022-01-31 22:03:30 -05:00
Dan Halbert d5740c8ad9 Merge remote-tracking branch 'adafruit/main' into i2c-common-hal-write-read 2022-01-31 18:51:32 -05:00
Michael Himing c92c8ac184 Only enable is31fl3741 for led glasses board
Also fix a warning in is31fl3741
2022-02-01 09:45:50 +11:00
Dan Halbert 25707d311a Track creation of board.I2C(), etc. 2022-01-30 23:20:51 -05:00
Dan Halbert 83e6e6690a wip; works on espressif 2022-01-29 22:44:27 -05:00
Dan Halbert a672ee6da5
Merge pull request #5862 from jepler/shared-module-i2c
Remove unused files
2022-01-27 22:46:34 -05:00
Scott Shawcroft 5a6f456dbb
Add BLE scanning for S3 and C3.
Everything else should raise NotImplementedError.

First step in #5926
2022-01-25 16:28:46 -08:00
Dan Kulinski 19f9163892 Bringing branch up to date with current main 2022-01-25 11:02:00 -07:00
gamblor21 af93817552 Fixing bad merge 2022-01-23 14:57:06 -06:00
Mark 21c8ac9d4c
Merge branch 'main' into is31pixelbuf 2022-01-23 13:41:10 -06:00
gamblor21 563d8f297c Major refractor to make a common base object 2022-01-23 13:12:37 -06:00
microDev 67293c265c
Merge branch 'main' into board-bus 2022-01-21 10:08:39 +05:30
microDev 30c0891fba
cleanup post instance parameter removal 2022-01-20 20:07:42 +05:30
Jeff Epler 8e895e1986
Add floppyio for rp2040
Tested on RP2040 Feather with a 3.5" Prodigy diskette, the whole
surface reads 100% across 3+ trials.
2022-01-17 16:34:47 -06:00
gamblor21 cf2c8eeec4 Moved init functions to helper python library 2022-01-17 16:13:27 -06:00
Dan Kulinski ca8299e51b Update logic for offset 2022-01-14 15:25:40 -07:00
Dan Kulinski fbd9e3284b Add two byte length check 2022-01-14 15:25:40 -07:00
Jeff Epler ab4e1481fc
Are these files even used? 2022-01-14 15:22:30 -06:00
Jeff Epler 6c53b06a3c
Update adafruit floppy submodule 2022-01-14 14:11:12 -06:00
Jeff Epler d816a4f19d
Add floppyio
Initially enabled for samd51, this enables reading raw flux data as well
as DOS/MFM formatted media.

This is only the low-level code for reading & decoding flux pulses from a floppy drive.
high level details will live in a Python library.

adafruit-circuitpython-floppy will take care of details like stepping
from track to track, etc.
2022-01-13 15:37:36 -06:00
Ben Combee 131b94540e audiomp3: reset decoded_samples when file resets
In testing, I saw that the decoded_samples value kept increasing when I
stopped and restarted playback, as I'd missed setting it back to zero
during the reset operation.
2022-01-02 15:19:25 -06:00
Ben Combee 98b0029a29 audiomp3: add decoded_samples property
In my testing, there is no way to accurately know how far into a MP3 file
you're currently playing. You can use monotonic time, but that can have
drift versus the audio playback system, which may not be running at exactly
the expected sample rate.

To allow syncing animation with timestamps in a MP3 file, this presents a
new property, decoded_samples, that records the number of audio samples
sent out of the decoder. While this may not be a completely accurate time,
due to mixer delays, it's much better position that the monotonic clock
difference.

Implementation is keeping track of this value in the mp3file structure and
adding to it whenever data is sent out of the decoder. The property
implementation was a copy/paste from current properties in the audiomp3
files.
2022-01-01 23:28:43 -06:00
Jeff Epler 8a94d9a255
Merge pull request #5784 from WarriorOfWire/vectorio_contains
vectorio contains(x, y)
2021-12-31 16:11:24 -07:00
Dan Halbert 2c4e3aa880
Merge pull request #5786 from prplz/fix-busdevice-stub-path
Fix busdevice stub path
2021-12-28 10:43:54 -05:00
Michael Himing fe71ee0812 Fix busdevice stub path 2021-12-28 19:31:40 +11:00
Dan Halbert 41d494df0b go into safe mode if not CIRCUITPY available 2021-12-27 18:58:24 -05:00
Kenny 8de5f90086 vectorio contains(x, y)
new utility function for all vectorio shape specializations for testing
whether a screen-space x,y point falls within a shape's x,y.

This respects the current orientation of the screen in the manner of
displayio and vectorio - so your x,y requests are in the same coordinate
domain as your x,y locations and your width/height etc. properties that
ou set on other shapes. I.e., if you're using this for touch points then
you will need to make sure the touch events are in the same x,y domain as
your display.

```
contains(2, 4) -> true
------------------
|                |
|                |
| --             |
| | \            |
| |. \           |
| |   \          |
| |____\         |
|                |
------------------

contains(5, 4) -> false
------------------
|                |
|                |
| --             |
| | \            |
| |  \.          |
| |   \          |
| |____\         |
|                |
------------------
```

This helps provide low overhead introspection of shape coverage on screen.
It's envisioned that this will be used for things like touch-and-drag
widget controls, touch "areas" and may help with random ornament placement
on toy Christmas trees.
2021-12-27 12:01:19 -10:00
foamyguy 2ce9dc7680 Merge branch 'adafruit_main' into tilegrid_size_props 2021-12-20 07:31:08 -06:00
George Waters c615daff30
Explicitly cast float to mp_int_t
Not sure why this is necessary, but it prevents an off-by-one error in
some (rare?) circumstances.
2021-12-17 16:23:58 -05:00
Scott Shawcroft 01f8cffdae
Support 32 bit color with vectorio
Fixes #5639
2021-12-14 17:13:11 -08:00
gamblor21 7c1afb070a Documentation fixes 2021-12-13 22:31:29 -06:00
gamblor21 11ef0b48c0 Change map to tuple to save memory and match _write 2021-12-13 22:31:29 -06:00
gamblor21 9fafd7d7fd Initial commit 2021-12-13 22:31:29 -06:00
foamyguy c4be8a5c94 tilegrid size properties 2021-12-13 09:44:08 -06:00
Kenny 17b53c7ebe vectorio: Add width and height properties to rectangle
Closes: https://github.com/adafruit/circuitpython/issues/5695
2021-12-12 19:50:00 -08:00
microDev b6858e4ca7
allow multiple board buses
Co-authored-by: Neradoc <neraOnGit@ri1.fr>
2021-12-11 23:07:21 +05:30
Jeff Epler bc9ef87d05
print addl debug message 2021-12-08 21:03:06 -06:00
Jeff Epler 11c573ef95
sdcardio: Don't require reaching idle state during early init
.. which is what the addition of cmd25 made happen. We still signal
an error when failing to reach the idle state at any other time,
which _is_ different than adafruit_sdcard but I think that it is
correct.

This fixed #5600 according to Dan's testing on a GCM4 on the internal
SD card slot. There are still some ambiguous results on the MM4 with
external SD card slot on 6" jumper wires.
2021-12-08 21:03:03 -06:00
Scott Shawcroft ee5536386d
Merge remote-tracking branch 'adafruit/main' into rpi 2021-11-24 14:23:23 -08:00
Scott Shawcroft 153ff6031e
Merge pull request #5616 from jepler/bitmaptools-bugfixes
Bitmaptools bugfixes
2021-11-24 11:50:29 -08:00
Scott Shawcroft b09c777d0a
Merge pull request #5584 from gamblor21/is31
IS31FL3741 Framebuffer Driver
2021-11-24 11:41:51 -08:00
Jeff Epler 30c07a772f
bitmaptools: dither: get rid of shifts
this happens to make the occasional FS dither artifact disappear.
I guess `a * b >> 8` and `(a * b) / 256` are not identical.  I'm not
sure if it was just the parens or not, but write the clearer code and
rely on the compiler to substitute an appropriate shift if possible.
2021-11-24 09:51:24 -06:00
Jeff Epler 9af76a2f03
bitmaptools dither: Fix off-by-one error filling row data 2021-11-24 09:51:23 -06:00
Scott Shawcroft 927a720de9
Fix I2C and feedback from Dan 2021-11-23 17:23:13 -08:00
gamblor21 97032fdbd0 Renaming files 2021-11-23 17:21:13 -06:00
gamblor21 9f2660f6ac Capitalization changes 2021-11-23 17:06:39 -06:00
gamblor21 fc3b0340b5 Remove hard coded mapping of LEDs 2021-11-23 13:21:09 -06:00
Timon a1052d5f73
Initial broadcom port for Raspberry Pi
This targets the 64-bit CPU Raspberry Pis. The BCM2711 on the Pi 4
and the BCM2837 on the Pi 3 and Zero 2W. There are 64-bit fixes
outside of the ports directory for it.

There are a couple other cleanups that were incidental:
* Use const mcu_pin_obj_t instead of omitting the const. The structs
  themselves are const because they are in ROM.
* Use PTR <-> OBJ conversions in more places. They were found when
  mp_obj_t was set to an integer type rather than pointer.
* Optimize submodule checkout because the Pi submodules are heavy
  and unnecessary for the vast majority of builds.

Fixes #4314
2021-11-22 14:54:44 -08:00
gamblor21 5243a33584 Check map to display size 2021-11-20 14:04:49 -06:00
gamblor21 6b2d43d3c8 Mapping for LEDs to diplay 2021-11-20 14:04:49 -06:00
gamblor21 9fa3feffb1 Cleanup 2021-11-20 13:46:12 -06:00
gamblor21 2f277eba3e Cleanup and i2c fix 2021-11-20 13:46:12 -06:00
gamblor21 e877449ae0 Cleanup 2021-11-20 13:46:12 -06:00
gamblor21 aa92d3a476 Cleanup and scaling addition 2021-11-20 13:46:11 -06:00
gamblor21 29c58575b0 Removed prints updated brightness 2021-11-20 13:46:11 -06:00
gamblor21 d063bf2675 Initial commit for IS31 2021-11-20 13:46:11 -06:00
Jeff Epler f4e68e8fae
use mp_get_stream_raise, it's more specific 2021-11-20 08:53:04 -05:00
Jeff Epler ee5e7161af
bitmaptools: use stream API
this allows `readinto` to succeed in the unix port, where the VFS
is not FAT
2021-11-20 08:51:40 -05:00
Jeff Epler edac675c48
rainbowio: optimize for code size
.. this saves 76 bytes on trinket_m0
2021-11-12 17:31:22 -06:00
Jeff Epler c91901dc37
rainbowio: Fix some things the unix build errors about 2021-11-12 17:31:13 -06:00
Jeff Epler d55388a17d
Add bitmaptools to unix build 2021-11-12 10:47:18 -06:00
Jeff Epler c6dbc7df3a
Add displayio bitmaps to unix build 2021-11-12 10:47:17 -06:00
Jeff Epler 340d6b9213
more missing-prototypes fixes 2021-11-10 21:00:17 -06:00
Jeff Epler c9475adb00
Enable -Werror=missing-prototypes on espressif port 2021-11-10 11:07:45 -06:00
Jeff Epler 621953c960
Additional missing-prototypes fixes
I think this correctly enables missing-prototypes in atmel-samd
and raspberrypi ports.
2021-11-10 10:55:53 -06:00
Jeff Epler 63fbf98186
Enable -Wmissing-prototypes for atmel-samd 2021-11-09 20:05:00 -06:00
Jeff Epler cbfa41f238 Merge remote-tracking branch 'origin/main' into dither3 2021-11-08 16:46:36 -06:00
Jeff Epler eaf8bc0abe bitmaptools: add dither
This can convert a BGR565_SWAPPED bitmap to B&W in about 82ms on
esp32-s2.
2021-11-08 10:35:44 -06:00
Jeff Epler dfafab675f Enable L8 mode for alphablend 2021-11-05 11:26:07 -05:00
Jeff Epler 8e8c44afea Merge remote-tracking branch 'origin/main' into alphablend 2021-11-05 11:24:51 -05:00
Jeff Epler 2ec2761ce0 bitmaptools: add alphablend
This blends two "565"-format bitmaps, including byteswapped ones. All
the bitmaps have to have the same memory format.

The routine takes about 63ms on a Kaluga when operating on 320x240 bitmaps.
Of course, displaying the bitmap also takes time.

There's untested code for the L8 (8-bit greyscale) case. This can be
enabled once gifio is merged.
2021-11-05 08:16:48 -05:00