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drivers/video/fb.c: Add startup splashscreen option
Adds Kconfig-selected splashscreen options used when the driver is first registered * Includes a new Python script in ./tools to create RLE bitmap files * Includes default NS logo btimaps in 320x320, 160x160 and 80x80 resolutions along with their PNG files Signed-off-by: Tim Hardisty timh@jti.uk.com>
This commit is contained in:
Tim Hardisty
committed by
Alan C. Assis
Alan C. Assis
parent
b333ad3ab5
commit
ed0c18c66c
256
tools/splashscreen_converter.py
Executable file
256
tools/splashscreen_converter.py
Executable file
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#!/usr/bin/env python3
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# tools/splashscreen_converter.py
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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"""This script converts from any image type supported by
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Python imaging library to the RLE-encoded format used by
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the framebuffer splashscreen feature.
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"""
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from PIL import Image
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def get_palette(img, maxcolors=256):
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"""Returns a list of colours. If there are too many colours in the image,
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the least used are removed.
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"""
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colors = img.getcolors(65536)
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colors.sort(key=lambda c: -c[0])
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return [c[1] for c in colors[:maxcolors]]
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def write_palette(outfile, palette, type):
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"""Write the palette to the output file."""
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if type == "ARGB":
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outfile.write("#ifdef CONFIG_VIDEO_FB_SPLASHSCREEN_BPP32\n")
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outfile.write("static const fb_pixel_t palette[] =\n")
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outfile.write("{\n")
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for i in range(0, len(palette), 4):
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for r, g, b, a in palette[i : i + 4]:
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outfile.write(" MKRGB(%d, %d, %d, %d),\n" % (a, r, g, b))
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outfile.write("};\n")
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outfile.write("#endif\n\n")
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elif type == "RGB":
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outfile.write("#if defined(CONFIG_VIDEO_FB_SPLASHSCREEN_BPP24) || \\\n")
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outfile.write(" defined(CONFIG_VIDEO_FB_SPLASHSCREEN_BPP16) || \\\n")
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outfile.write(" defined(CONFIG_VIDEO_FB_SPLASHSCREEN_BPP8)\n")
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outfile.write("static const fb_pixel_t palette[] =\n")
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outfile.write("{\n")
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for i in range(0, len(palette), 4):
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for r, g, b in palette[i : i + 4]:
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outfile.write(" MKRGB(%d, %d, %d),\n" % (r, g, b))
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outfile.write("};\n")
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outfile.write("#endif\n\n")
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else:
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outfile.write("#if defined(CONFIG_VIDEO_FB_SPLASHSCREEN_GREY) || \\\n")
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outfile.write(" defined(CONFIG_VIDEO_FB_SPLASHSCREEN_MONO)\n")
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outfile.write("static const fb_pixel_t palette[] =\n{\n};\n")
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outfile.write("#endif\n\n")
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def quantize(color, palette):
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"""Return the color index to closest match in the palette."""
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try:
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return palette.index(color)
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except ValueError:
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# No exact match, search for the closest
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def distance(color2):
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return sum([(a - b) ** 2 for a, b in zip(color, color2)])
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return palette.index(min(palette, key=distance))
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def encode_row(img, palette, y, type):
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"""RLE-encode one row of image data."""
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color = None
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entries = []
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repeats = 0
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for x in range(0, img.width):
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if type == "BPP32" or type == "BPP24" or type == "BPP16":
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c = quantize(img.getpixel((x, y)), palette)
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else:
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c = img.getpixel((x, y))
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if c == color and repeats < 255:
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repeats += 1
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else:
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if color is not None:
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entries.append((repeats, color))
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repeats = 1
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color = c
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if color is not None:
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entries.append((repeats, color))
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return entries
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def write_image(outfile, img, palette, suffix):
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"""Write the image contents to the output file."""
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if suffix == "BPP24" or suffix == "BPP16":
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outfile.write("#if defined(CONFIG_VIDEO_FB_SPLASHSCREEN_BPP24) || \\")
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outfile.write("\n defined(CONFIG_VIDEO_FB_SPLASHSCREEN_BPP16)\n")
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else:
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outfile.write("#ifdef CONFIG_VIDEO_FB_SPLASHSCREEN_%s\n" % suffix)
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outfile.write("static const struct splscr_bitmap_s bitmap[] =\n")
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outfile.write("{")
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for y in range(0, img.height):
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entries = encode_row(img, palette, y, suffix)
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for r, c in entries:
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outfile.write("\n")
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row = " {%d, %d}," % (r, c)
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outfile.write(row)
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outfile.write(("/* End of row %3d */" % (y + 1)).rjust(78 - len(row), " "))
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outfile.write("\n};\n")
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outfile.write("#endif /* CONFIG_VIDEO_FB_SPLASHSCREEN_%s */\n\n" % suffix)
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def write_descriptor(outfile, name):
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outfile.write("const struct palette_bitmap_s g_%s =\n" % name)
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outfile.write("{\n")
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lw = len(str(img.width))
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lh = len(str(img.height))
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outfile.write(" %d," % img.width)
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outfile.write(
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("/* width in pixels */\n").rjust(
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76 - lw, " "
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)
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)
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outfile.write(" %d," % img.height)
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outfile.write(
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("/* height in pixels */\n").rjust(
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76 - lh, " "
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)
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)
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outfile.write(
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(
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" palette, /* Colour palette */\n"
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).rjust(76, " ")
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)
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outfile.write(
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(
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" bitmap, /* Pointer to the start of the RLE data */\n"
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).rjust(76, " ")
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)
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outfile.write("};\n")
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if __name__ == "__main__":
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import os.path
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import sys
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if len(sys.argv) < 3:
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print("Usage: splashscreen_converter.py image.xxx output_directory out.c")
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print(
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"\t- image.xxx\t\tis the image file (e.g. logo.png) in a format supported by PIL"
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)
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print("\t- output_directory\tis where the output file will be saved.")
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print("\t- out.c\t\t\tis the name of the output file.")
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print("\t\t\t\t- If out.c is not specified it will default to fb_splash.c,")
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print("\t\t\t\t which is the name required for custom splashscreens")
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sys.exit(1)
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elif len(sys.argv) == 3:
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path = sys.argv[2]
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filename = "fb_splash.c"
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else:
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path = os.path.relpath(sys.argv[2])
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filename = sys.argv[3]
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img = Image.open(sys.argv[1]).convert("RGBA")
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file = os.path.realpath(path + "/" + filename)
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outfile = open(file, "w")
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palette_argb = get_palette(img)
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palette_rgb = get_palette(img.convert("RGB"))
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outfile.write(
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"""/****************************************************************************
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* %(file)s
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* Script-generated framebuffer splashscreen bitmap file.
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* Generated from %(src)s
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* by splashscreen_converter.py
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/video/fb.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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"""
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% {"file": path + "/" + filename, "src": os.path.relpath(sys.argv[1])}
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)
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name = "splscr"
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write_palette(outfile, palette_argb, "ARGB")
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write_palette(outfile, palette_rgb, "RGB")
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write_palette(outfile, None, None)
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write_image(outfile, img, palette_argb, "BPP32")
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write_image(outfile, img.convert("RGB"), palette_rgb, "BPP24")
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write_image(outfile, img.convert("L"), None, "GREY")
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write_image(outfile, img.convert("1"), None, "MONO")
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write_descriptor(outfile, name)
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outfile.write(
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"""
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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"""
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)
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print("Created %s from %s" % (file, sys.argv[1]))
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