mirror of
https://github.com/ByteWelder/Tactility.git
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0ebd471cc0
- The `/system` FAT volume is removed. Its files are embedded in the firmware as generated C arrays. - Default-size fonts are generated at build time and used from flash. - The LVGL task and the Launcher run on PSRAM-preferred stacks. A new kernel `file_ops` API takes the file work off those threads. - `MainDispatcher` is reimplemented as an on-demand task. - More long-lived state is allocated with the PSRAM-preferring helpers. - Other fixes and improvements
92 lines
3.3 KiB
Python
92 lines
3.3 KiB
Python
#!/usr/bin/env python3
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"""
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Embeds every file of an asset folder as a C byte array.
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Usage: generate-assets.py <asset-folder> <output-folder>
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Writes generated_assets.h and generated_assets.c. A file "fonts/AdwaitaSans.ttf" becomes the symbols
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asset_fonts_AdwaitaSans_ttf (the bytes) and asset_fonts_AdwaitaSans_ttf_size (the byte count).
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The size is also available as the constant asset_fonts_AdwaitaSans_ttf_SIZE for use in constant initializers.
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Text files get an extra terminating 0 byte that is not part of the size, so they can be used as C strings.
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Output files are only rewritten when their content changes, to avoid needless recompiles.
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"""
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import os
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import re
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import sys
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TEXT_EXTENSIONS = {".pem", ".csv", ".html", ".json", ".codepoints", ".i18n", ".txt"}
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def symbol_name(relative_path: str) -> str:
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return "asset_" + re.sub(r"[^A-Za-z0-9]", "_", relative_path)
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def write_if_changed(path: str, content: str):
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if os.path.exists(path):
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with open(path, "r", encoding="utf-8", newline="") as file:
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if file.read() == content:
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return
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with open(path, "w", encoding="utf-8", newline="") as file:
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file.write(content)
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def main():
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if len(sys.argv) != 3:
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print(f"Usage: {sys.argv[0]} <asset-folder> <output-folder>")
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sys.exit(1)
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asset_folder = os.path.abspath(sys.argv[1])
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output_folder = os.path.abspath(sys.argv[2])
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os.makedirs(output_folder, exist_ok=True)
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relative_paths = []
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for directory, _, file_names in os.walk(asset_folder):
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for file_name in file_names:
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relative_paths.append(os.path.relpath(os.path.join(directory, file_name), asset_folder).replace(os.sep, "/"))
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relative_paths.sort()
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header = [
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"// Generated by Buildscripts/generate-assets.py. Do not edit.",
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"#pragma once",
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"",
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"#include <stddef.h>",
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"#include <stdint.h>",
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"",
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"#ifdef __cplusplus",
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'extern "C" {',
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"#endif",
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"",
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]
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source = [
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"// Generated by Buildscripts/generate-assets.py. Do not edit.",
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'#include "generated_assets.h"',
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"",
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]
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for relative_path in relative_paths:
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with open(os.path.join(asset_folder, relative_path), "rb") as file:
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data = file.read()
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symbol = symbol_name(relative_path)
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size = len(data)
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if os.path.splitext(relative_path)[1].lower() in TEXT_EXTENSIONS:
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data += b"\0"
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header.append(f"// {relative_path}")
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header.append(f"extern const uint8_t {symbol}[];")
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header.append(f"extern const size_t {symbol}_size;")
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header.append(f"#define {symbol}_SIZE {size}")
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source.append(f"// {relative_path}")
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source.append(f"const uint8_t {symbol}[] = {{")
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for offset in range(0, len(data), 24):
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source.append(" " + ", ".join(f"0x{byte:02x}" for byte in data[offset:offset + 24]) + ",")
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if len(data) == 0:
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source.append(" 0")
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source.append("};")
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source.append(f"const size_t {symbol}_size = {size};")
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source.append("")
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header += ["", "#ifdef __cplusplus", "}", "#endif", ""]
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write_if_changed(os.path.join(output_folder, "generated_assets.h"), "\n".join(header))
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write_if_changed(os.path.join(output_folder, "generated_assets.c"), "\n".join(source))
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if __name__ == "__main__":
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main()
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