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Diffstat (limited to 'scripts/py/gen_rgb_cpp.py')
| -rw-r--r-- | scripts/py/gen_rgb_cpp.py | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/scripts/py/gen_rgb_cpp.py b/scripts/py/gen_rgb_cpp.py new file mode 100644 index 0000000..1a2e09b --- /dev/null +++ b/scripts/py/gen_rgb_cpp.py @@ -0,0 +1,135 @@ +# Copyright (c) 2021 Arm Limited. All rights reserved. +# SPDX-License-Identifier: Apache-2.0 +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +""" +Utility script to convert a set of RGB images in a given location into +corresponding cpp files and a single hpp file referencing the vectors +from the cpp files. +""" +import datetime +import glob +import math +import os +import numpy as np + +from argparse import ArgumentParser +from PIL import Image, UnidentifiedImageError +from jinja2 import Environment, FileSystemLoader + +parser = ArgumentParser() +parser.add_argument("--image_path", type=str, help="path to images folder or image file to convert.") +parser.add_argument("--source_folder_path", type=str, help="path to source folder to be generated.") +parser.add_argument("--header_folder_path", type=str, help="path to header folder to be generated.") +parser.add_argument("--image_size", type=int, nargs=2, help="Size (width and height) of the converted images.") +parser.add_argument("--license_template", type=str, help="Header template file", + default="header_template.txt") +args = parser.parse_args() + +env = Environment(loader=FileSystemLoader(os.path.join(os.path.dirname(__file__), 'templates')), + trim_blocks=True, + lstrip_blocks=True) + + +def write_hpp_file(header_file_path, cc_file_path, header_template_file, num_images, image_filenames, + image_array_names, image_size): + print(f"++ Generating {header_file_path}") + header_template = env.get_template(header_template_file) + hdr = header_template.render(script_name=os.path.basename(__file__), + gen_time=datetime.datetime.now(), + year=datetime.datetime.now().year) + env.get_template('Images.hpp.template').stream(common_template_header=hdr, + imgs_count=num_images, + img_size=str(image_size[0] * image_size[1] * 3), + var_names=image_array_names) \ + .dump(str(header_file_path)) + + env.get_template('Images.cc.template').stream(common_template_header=hdr, + var_names=image_array_names, + img_names=image_filenames) \ + .dump(str(cc_file_path)) + + +def write_individual_img_cc_file(image_filename, cc_filename, header_template_file, original_image, + image_size, array_name): + print(f"++ Converting {image_filename} to {os.path.basename(cc_filename)}") + + header_template = env.get_template(header_template_file) + hdr = header_template.render(script_name=os.path.basename(__file__), + gen_time=datetime.datetime.now(), + file_name=os.path.basename(image_filename), + year=datetime.datetime.now().year) + + original_image.thumbnail(image_size) + delta_w = abs(image_size[0] - original_image.size[0]) + delta_h = abs(image_size[1] - original_image.size[1]) + resized_image = Image.new('RGB', args.image_size, (255, 255, 255, 0)) + resized_image.paste(original_image, (int(delta_w / 2), int(delta_h / 2))) + + # Convert the image and write it to the cc file + rgb_data = np.array(resized_image, dtype=np.uint8).flatten() + hex_line_generator = (', '.join(map(hex, sub_arr)) + for sub_arr in np.array_split(rgb_data, math.ceil(len(rgb_data) / 20))) + env.get_template('image.cc.template').stream(common_template_header=hdr, + var_name=array_name, + img_data=hex_line_generator) \ + .dump(str(cc_filename)) + + +def main(args): + # Keep the count of the images converted + image_idx = 0 + image_filenames = [] + image_array_names = [] + + + if os.path.isdir(args.image_path): + filepaths = sorted(glob.glob(os.path.join(args.image_path, '**/*.*'), recursive=True)) + elif os.path.isfile(args.image_path): + filepaths = [args.image_path] + else: + raise OSError("Directory or file does not exist.") + + for filepath in filepaths: + filename = os.path.basename(filepath) + + try: + original_image = Image.open(filepath).convert("RGB") + except UnidentifiedImageError: + print(f"-- Skipping file {filepath} due to unsupported image format.") + continue + + image_filenames.append(filename) + + # Save the cc file + cc_filename = os.path.join(args.source_folder_path, + (filename.rsplit(".")[0]).replace(" ", "_") + ".cc") + array_name = "im" + str(image_idx) + image_array_names.append(array_name) + write_individual_img_cc_file(filename, cc_filename, args.license_template, + original_image, args.image_size, array_name) + + # Increment image index + image_idx = image_idx + 1 + + header_filename = "InputFiles.hpp" + header_filepath = os.path.join(args.header_folder_path, header_filename) + common_cc_filename = "InputFiles.cc" + common_cc_filepath = os.path.join(args.source_folder_path, common_cc_filename) + write_hpp_file(header_filepath, common_cc_filepath, args.license_template, + image_idx, image_filenames, image_array_names, args.image_size) + + +if __name__ == '__main__': + main(args) |