forked from mirrors/qmk_firmware
338 lines
11 KiB
Python
338 lines
11 KiB
Python
"""Functions that help us work with Quantum Painter's file formats.
|
|
"""
|
|
import math
|
|
import re
|
|
from string import Template
|
|
from PIL import Image, ImageOps
|
|
|
|
# The list of valid formats Quantum Painter supports
|
|
valid_formats = {
|
|
'rgb888': {
|
|
'image_format': 'IMAGE_FORMAT_RGB888',
|
|
'bpp': 24,
|
|
'has_palette': False,
|
|
'num_colors': 16777216,
|
|
'image_format_byte': 0x09, # see qp_internal_formats.h
|
|
},
|
|
'rgb565': {
|
|
'image_format': 'IMAGE_FORMAT_RGB565',
|
|
'bpp': 16,
|
|
'has_palette': False,
|
|
'num_colors': 65536,
|
|
'image_format_byte': 0x08, # see qp_internal_formats.h
|
|
},
|
|
'pal256': {
|
|
'image_format': 'IMAGE_FORMAT_PALETTE',
|
|
'bpp': 8,
|
|
'has_palette': True,
|
|
'num_colors': 256,
|
|
'image_format_byte': 0x07, # see qp_internal_formats.h
|
|
},
|
|
'pal16': {
|
|
'image_format': 'IMAGE_FORMAT_PALETTE',
|
|
'bpp': 4,
|
|
'has_palette': True,
|
|
'num_colors': 16,
|
|
'image_format_byte': 0x06, # see qp_internal_formats.h
|
|
},
|
|
'pal4': {
|
|
'image_format': 'IMAGE_FORMAT_PALETTE',
|
|
'bpp': 2,
|
|
'has_palette': True,
|
|
'num_colors': 4,
|
|
'image_format_byte': 0x05, # see qp_internal_formats.h
|
|
},
|
|
'pal2': {
|
|
'image_format': 'IMAGE_FORMAT_PALETTE',
|
|
'bpp': 1,
|
|
'has_palette': True,
|
|
'num_colors': 2,
|
|
'image_format_byte': 0x04, # see qp_internal_formats.h
|
|
},
|
|
'mono256': {
|
|
'image_format': 'IMAGE_FORMAT_GRAYSCALE',
|
|
'bpp': 8,
|
|
'has_palette': False,
|
|
'num_colors': 256,
|
|
'image_format_byte': 0x03, # see qp_internal_formats.h
|
|
},
|
|
'mono16': {
|
|
'image_format': 'IMAGE_FORMAT_GRAYSCALE',
|
|
'bpp': 4,
|
|
'has_palette': False,
|
|
'num_colors': 16,
|
|
'image_format_byte': 0x02, # see qp_internal_formats.h
|
|
},
|
|
'mono4': {
|
|
'image_format': 'IMAGE_FORMAT_GRAYSCALE',
|
|
'bpp': 2,
|
|
'has_palette': False,
|
|
'num_colors': 4,
|
|
'image_format_byte': 0x01, # see qp_internal_formats.h
|
|
},
|
|
'mono2': {
|
|
'image_format': 'IMAGE_FORMAT_GRAYSCALE',
|
|
'bpp': 1,
|
|
'has_palette': False,
|
|
'num_colors': 2,
|
|
'image_format_byte': 0x00, # see qp_internal_formats.h
|
|
}
|
|
}
|
|
|
|
license_template = """\
|
|
// Copyright ${year} QMK -- generated source code only, ${generated_type} retains original copyright
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
// This file was auto-generated by `${generator_command}`
|
|
"""
|
|
|
|
|
|
def render_license(subs):
|
|
license_txt = Template(license_template)
|
|
return license_txt.substitute(subs)
|
|
|
|
|
|
header_file_template = """\
|
|
${license}
|
|
#pragma once
|
|
|
|
#include <qp.h>
|
|
|
|
extern const uint32_t ${var_prefix}_${sane_name}_length;
|
|
extern const uint8_t ${var_prefix}_${sane_name}[${byte_count}];
|
|
"""
|
|
|
|
|
|
def render_header(subs):
|
|
header_txt = Template(header_file_template)
|
|
return header_txt.substitute(subs)
|
|
|
|
|
|
source_file_template = """\
|
|
${license}
|
|
#include <qp.h>
|
|
|
|
const uint32_t ${var_prefix}_${sane_name}_length = ${byte_count};
|
|
|
|
// clang-format off
|
|
const uint8_t ${var_prefix}_${sane_name}[${byte_count}] = {
|
|
${bytes_lines}
|
|
};
|
|
// clang-format on
|
|
"""
|
|
|
|
|
|
def render_source(subs):
|
|
source_txt = Template(source_file_template)
|
|
return source_txt.substitute(subs)
|
|
|
|
|
|
def render_bytes(bytes, newline_after=16):
|
|
lines = ''
|
|
for n in range(len(bytes)):
|
|
if n % newline_after == 0 and n > 0 and n != len(bytes):
|
|
lines = lines + "\n "
|
|
elif n == 0:
|
|
lines = lines + " "
|
|
lines = lines + " 0x{0:02X},".format(bytes[n])
|
|
return lines.rstrip()
|
|
|
|
|
|
def clean_output(str):
|
|
str = re.sub(r'\r', '', str)
|
|
str = re.sub(r'[\n]{3,}', r'\n\n', str)
|
|
return str
|
|
|
|
|
|
def rescale_byte(val, maxval):
|
|
"""Rescales a byte value to the supplied range, i.e. [0,255] -> [0,maxval].
|
|
"""
|
|
return int(round(val * maxval / 255.0))
|
|
|
|
|
|
def convert_requested_format(im, format):
|
|
"""Convert an image to the requested format.
|
|
"""
|
|
|
|
# Work out the requested format
|
|
ncolors = format["num_colors"]
|
|
image_format = format["image_format"]
|
|
|
|
# Work out where we're getting the bytes from
|
|
if image_format == 'IMAGE_FORMAT_GRAYSCALE':
|
|
# Ensure we have a valid number of colors for the palette
|
|
if ncolors <= 0 or ncolors > 256 or (ncolors & (ncolors - 1) != 0):
|
|
raise ValueError("Number of colors must be 2, 4, 16, or 256.")
|
|
# If mono, convert input to grayscale, then to RGB, then grab the raw bytes corresponding to the intensity of the red channel
|
|
im = ImageOps.grayscale(im)
|
|
im = im.convert("RGB")
|
|
elif image_format == 'IMAGE_FORMAT_PALETTE':
|
|
# Ensure we have a valid number of colors for the palette
|
|
if ncolors <= 0 or ncolors > 256 or (ncolors & (ncolors - 1) != 0):
|
|
raise ValueError("Number of colors must be 2, 4, 16, or 256.")
|
|
# If color, convert input to RGB, palettize based on the supplied number of colors, then get the raw palette bytes
|
|
im = im.convert("RGB")
|
|
im = im.convert("P", palette=Image.ADAPTIVE, colors=ncolors)
|
|
elif image_format == 'IMAGE_FORMAT_RGB565':
|
|
# Ensure we have a valid number of colors for the palette
|
|
if ncolors != 65536:
|
|
raise ValueError("Number of colors must be 65536.")
|
|
# If color, convert input to RGB
|
|
im = im.convert("RGB")
|
|
elif image_format == 'IMAGE_FORMAT_RGB888':
|
|
# Ensure we have a valid number of colors for the palette
|
|
if ncolors != 1677216:
|
|
raise ValueError("Number of colors must be 16777216.")
|
|
# If color, convert input to RGB
|
|
im = im.convert("RGB")
|
|
|
|
return im
|
|
|
|
|
|
def convert_image_bytes(im, format):
|
|
"""Convert the supplied image to the equivalent bytes required by the QMK firmware.
|
|
"""
|
|
|
|
# Work out the requested format
|
|
ncolors = format["num_colors"]
|
|
image_format = format["image_format"]
|
|
shifter = int(math.log2(ncolors))
|
|
pixels_per_byte = int(8 / math.log2(ncolors))
|
|
bytes_per_pixel = math.ceil(math.log2(ncolors) / 8)
|
|
(width, height) = im.size
|
|
if (pixels_per_byte != 0):
|
|
expected_byte_count = ((width * height) + (pixels_per_byte - 1)) // pixels_per_byte
|
|
else:
|
|
expected_byte_count = width * height * bytes_per_pixel
|
|
|
|
if image_format == 'IMAGE_FORMAT_GRAYSCALE':
|
|
# Take the red channel
|
|
image_bytes = im.tobytes("raw", "R")
|
|
image_bytes_len = len(image_bytes)
|
|
|
|
# No palette
|
|
palette = None
|
|
|
|
bytearray = []
|
|
for x in range(expected_byte_count):
|
|
byte = 0
|
|
for n in range(pixels_per_byte):
|
|
byte_offset = x * pixels_per_byte + n
|
|
if byte_offset < image_bytes_len:
|
|
# If mono, each input byte is a grayscale [0,255] pixel -- rescale to the range we want then pack together
|
|
byte = byte | (rescale_byte(image_bytes[byte_offset], ncolors - 1) << int(n * shifter))
|
|
bytearray.append(byte)
|
|
|
|
elif image_format == 'IMAGE_FORMAT_PALETTE':
|
|
# Convert each pixel to the palette bytes
|
|
image_bytes = im.tobytes("raw", "P")
|
|
image_bytes_len = len(image_bytes)
|
|
|
|
# Export the palette
|
|
palette = []
|
|
pal = im.getpalette()
|
|
for n in range(0, ncolors * 3, 3):
|
|
palette.append((pal[n + 0], pal[n + 1], pal[n + 2]))
|
|
|
|
bytearray = []
|
|
for x in range(expected_byte_count):
|
|
byte = 0
|
|
for n in range(pixels_per_byte):
|
|
byte_offset = x * pixels_per_byte + n
|
|
if byte_offset < image_bytes_len:
|
|
# If color, each input byte is the index into the color palette -- pack them together
|
|
byte = byte | ((image_bytes[byte_offset] & (ncolors - 1)) << int(n * shifter))
|
|
bytearray.append(byte)
|
|
|
|
if image_format == 'IMAGE_FORMAT_RGB565':
|
|
# Take the red, green, and blue channels
|
|
image_bytes_red = im.tobytes("raw", "R")
|
|
image_bytes_green = im.tobytes("raw", "G")
|
|
image_bytes_blue = im.tobytes("raw", "B")
|
|
image_pixels_len = len(image_bytes_red)
|
|
|
|
# No palette
|
|
palette = None
|
|
|
|
bytearray = []
|
|
for x in range(image_pixels_len):
|
|
# 5 bits of red, 3 MSb of green
|
|
byte = ((image_bytes_red[x] >> 3 & 0x1F) << 3) + (image_bytes_green[x] >> 5 & 0x07)
|
|
bytearray.append(byte)
|
|
# 3 LSb of green, 5 bits of blue
|
|
byte = ((image_bytes_green[x] >> 2 & 0x07) << 5) + (image_bytes_blue[x] >> 3 & 0x1F)
|
|
bytearray.append(byte)
|
|
|
|
if image_format == 'IMAGE_FORMAT_RGB888':
|
|
# Take the red, green, and blue channels
|
|
image_bytes_red = im.tobytes("raw", "R")
|
|
image_bytes_green = im.tobytes("raw", "G")
|
|
image_bytes_blue = im.tobytes("raw", "B")
|
|
image_pixels_len = len(image_bytes_red)
|
|
|
|
# No palette
|
|
palette = None
|
|
|
|
bytearray = []
|
|
for x in range(image_pixels_len):
|
|
byte = image_bytes_red[x]
|
|
bytearray.append(byte)
|
|
byte = image_bytes_green[x]
|
|
bytearray.append(byte)
|
|
byte = image_bytes_blue[x]
|
|
bytearray.append(byte)
|
|
|
|
if len(bytearray) != expected_byte_count:
|
|
raise Exception(f"Wrong byte count, was {len(bytearray)}, expected {expected_byte_count}")
|
|
|
|
return (palette, bytearray)
|
|
|
|
|
|
def compress_bytes_qmk_rle(bytearray):
|
|
debug_dump = False
|
|
output = []
|
|
temp = []
|
|
repeat = False
|
|
|
|
def append_byte(c):
|
|
if debug_dump:
|
|
print('Appending byte:', '0x{0:02X}'.format(int(c)), '=', c)
|
|
output.append(c)
|
|
|
|
def append_range(r):
|
|
append_byte(127 + len(r))
|
|
if debug_dump:
|
|
print('Appending {0} byte(s):'.format(len(r)), '[', ', '.join(['{0:02X}'.format(e) for e in r]), ']')
|
|
output.extend(r)
|
|
|
|
for n in range(0, len(bytearray) + 1):
|
|
end = True if n == len(bytearray) else False
|
|
if not end:
|
|
c = bytearray[n]
|
|
temp.append(c)
|
|
if len(temp) <= 1:
|
|
continue
|
|
|
|
if debug_dump:
|
|
print('Temp buffer state {0:3d} bytes:'.format(len(temp)), '[', ', '.join(['{0:02X}'.format(e) for e in temp]), ']')
|
|
|
|
if repeat:
|
|
if temp[-1] != temp[-2]:
|
|
repeat = False
|
|
if not repeat or len(temp) == 128 or end:
|
|
append_byte(len(temp) if end else len(temp) - 1)
|
|
append_byte(temp[0])
|
|
temp = [temp[-1]]
|
|
repeat = False
|
|
else:
|
|
if len(temp) >= 2 and temp[-1] == temp[-2]:
|
|
repeat = True
|
|
if len(temp) > 2:
|
|
append_range(temp[0:(len(temp) - 2)])
|
|
temp = [temp[-1], temp[-1]]
|
|
continue
|
|
if len(temp) == 128 or end:
|
|
append_range(temp)
|
|
temp = []
|
|
repeat = False
|
|
return output
|