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Impl. font compression demo

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This commit is contained in:
Alvin Wong
2021-04-17 05:18:19 +08:00
parent 6f4f4d9733
commit fadb25273e
2 changed files with 97 additions and 14 deletions
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92
Translations/make_translation.py
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@@ -430,13 +430,26 @@ def get_font_map_and_table(
def make_font_table_cpp(
sym_list: List[str], font_map: FontMap, symbol_map: Dict[str, bytes]
) -> str:
output_table = make_font_table_12_cpp(sym_list, font_map, symbol_map)
output_table += make_font_table_06_cpp(sym_list, font_map, symbol_map)
return output_table
def make_font_table_12_cpp(
sym_list: List[str], font_map: FontMap, symbol_map: Dict[str, bytes]
) -> str:
output_table = "const uint8_t USER_FONT_12[] = {\n"
for sym in sym_list:
output_table += f"{bytes_to_c_hex(font_map.font12[sym])}//{bytes_to_escaped(symbol_map[sym])} -> {sym}\n"
output_table += "};\n"
return output_table
output_table += "const uint8_t USER_FONT_6x8[] = {\n"
def make_font_table_06_cpp(
sym_list: List[str], font_map: FontMap, symbol_map: Dict[str, bytes]
) -> str:
output_table = "const uint8_t USER_FONT_6x8[] = {\n"
for sym in sym_list:
font_bytes = font_map.font06[sym]
if font_bytes:
@@ -506,7 +519,10 @@ def prepare_language(lang: dict, defs: dict, build_version: str) -> LanguageData
def write_language(
data: LanguageData, f: TextIO, strings_bin: Optional[bytes] = None
data: LanguageData,
f: TextIO,
strings_bin: Optional[bytes] = None,
compress_font: bool = False,
) -> None:
lang = data.lang
defs = data.defs
@@ -517,18 +533,36 @@ def write_language(
language_code: str = lang["languageCode"]
logging.info(f"Generating block for {language_code}")
font_table_text = make_font_table_cpp(sym_list, font_map, symbol_conversion_table)
try:
lang_name = lang["languageLocalName"]
except KeyError:
lang_name = language_code
if strings_bin:
if strings_bin or compress_font:
f.write('#include "lzfx.h"\n')
f.write(f"\n// ---- {lang_name} ----\n\n")
f.write(font_table_text)
if not compress_font:
font_table_text = make_font_table_cpp(
sym_list, font_map, symbol_conversion_table
)
f.write(font_table_text)
else:
font12_uncompressed = bytearray()
for sym in sym_list:
font12_uncompressed.extend(font_map.font12[sym])
font12_compressed = lzfx.compress(bytes(font12_uncompressed))
logging.info(
f"Font table 12x16 compressed from {len(font12_uncompressed)} to {len(font12_compressed)} bytes (ratio {len(font12_compressed) / len(font12_uncompressed):.3})"
)
write_bytes_as_c_array(f, "font_12x16_lzfx", font12_compressed)
font_table_text = make_font_table_06_cpp(
sym_list, font_map, symbol_conversion_table
)
f.write(font_table_text)
f.write(f"\n// ---- {lang_name} ----\n\n")
translation_common_text = get_translation_common_text(
@@ -537,10 +571,17 @@ def write_language(
f.write(translation_common_text)
f.write(
f"const bool HasFahrenheit = {('true' if lang.get('tempUnitFahrenheit', True) else 'false')};\n\n"
"extern const uint8_t *const Font_12x16 = USER_FONT_12;\n"
"extern const uint8_t *const Font_6x8 = USER_FONT_6x8;\n\n"
)
if not compress_font:
f.write("extern const uint8_t *const Font_12x16 = USER_FONT_12;\n")
else:
f.write(
f"static uint8_t font_out_buffer[{len(font12_uncompressed)}];\n\n"
"extern const uint8_t *const Font_12x16 = font_out_buffer;\n"
)
f.write("extern const uint8_t *const Font_6x8 = USER_FONT_6x8;\n\n")
if not strings_bin:
translation_strings_and_indices_text = get_translation_strings_and_indices_text(
lang, defs, symbol_conversion_table
@@ -549,7 +590,6 @@ def write_language(
f.write(
"const TranslationIndexTable *const Tr = &TranslationIndices;\n"
"const char *const TranslationStrings = TranslationStringsData;\n\n"
"void prepareTranslations() {}\n\n"
)
else:
compressed = lzfx.compress(strings_bin)
@@ -561,12 +601,24 @@ def write_language(
f"static uint8_t translation_data_out_buffer[{len(strings_bin)}] __attribute__((__aligned__(2)));\n\n"
"const TranslationIndexTable *const Tr = reinterpret_cast<const TranslationIndexTable *>(translation_data_out_buffer);\n"
"const char *const TranslationStrings = reinterpret_cast<const char *>(translation_data_out_buffer) + sizeof(TranslationIndexTable);\n\n"
"void prepareTranslations() {\n"
" unsigned int outsize = sizeof(translation_data_out_buffer);\n"
" lzfx_decompress(translation_data_lzfx, sizeof(translation_data_lzfx), translation_data_out_buffer, &outsize);\n"
"}\n\n"
)
if not strings_bin and not compress_font:
f.write("void prepareTranslations() {}\n\n")
else:
f.write("void prepareTranslations() {\n" " unsigned int outsize;\n")
if compress_font:
f.write(
" outsize = sizeof(font_out_buffer);\n"
" lzfx_decompress(font_12x16_lzfx, sizeof(font_12x16_lzfx), font_out_buffer, &outsize);\n"
)
if strings_bin:
f.write(
" outsize = sizeof(translation_data_out_buffer);\n"
" lzfx_decompress(translation_data_lzfx, sizeof(translation_data_lzfx), translation_data_out_buffer, &outsize);\n"
)
f.write("}\n\n")
sanity_checks_text = get_translation_sanity_checks_text(defs)
f.write(sanity_checks_text)
@@ -858,6 +910,13 @@ def parse_args() -> argparse.Namespace:
required=False,
dest="strings_bin",
)
parser.add_argument(
"--compress-font",
help="Compress the font table",
action="store_true",
required=False,
dest="compress_font",
)
parser.add_argument(
"--output", "-o", help="Target file", type=argparse.FileType("w"), required=True
)
@@ -901,9 +960,14 @@ def main() -> None:
out_ = args.output
write_start(out_)
if args.strings_bin:
write_language(language_data, out_, args.strings_bin.read())
write_language(
language_data,
out_,
args.strings_bin.read(),
compress_font=args.compress_font,
)
else:
write_language(language_data, out_)
write_language(language_data, out_, compress_font=args.compress_font)
if args.output_pickled:
logging.info(f"Writing pickled data to {args.output_pickled.name}")