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cmake: convert bmp images to c headers using python script

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A pure CMake script was too slow
This commit is contained in:
Anonymous Maarten 2023-07-16 15:50:32 +02:00 committed by Anonymous Maarten
parent 74612701bb
commit 80da0cf06d
2 changed files with 76 additions and 1 deletions
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37
cmake/xxd.py Executable file
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@ -0,0 +1,37 @@
#!/usr/bin/env python
import argparse
import os
import pathlib
import re
def main():
parser = argparse.ArgumentParser(allow_abbrev=False, description="Convert file into includable C header")
parser.add_argument("--in", "-i", type=pathlib.Path, metavar="INPUT", dest="input", required=True, help="Input file")
parser.add_argument("--out", "-o", type=pathlib.Path, metavar="OUTPUT", dest="output", required=True, help="Output header")
parser.add_argument("--columns", type=int, default=12, help="Column count")
args = parser.parse_args()
t = pathlib.Path()
varname, _ = re.subn("[^a-zA-Z0-9]", "_", str(args.input.name))
binary_data = args.input.open("rb").read()
with open(args.output, "w") as fout:
fout.write("unsigned char {}[] = {{\n".format(varname))
bytes_written = 0
while bytes_written < len(binary_data):
col = bytes_written % args.columns
if col == 0:
fout.write(" ")
column_data = binary_data[bytes_written:bytes_written+args.columns]
fout.write(", ".join("0x{:02x}".format(d) for d in column_data))
bytes_written += len(column_data)
if bytes_written < len(binary_data):
fout.write(",\n")
else:
fout.write("\n")
fout.write("}};\nunsigned int {}_len = {:d};\n".format(varname, len(binary_data)))
if __name__ == "__main__":
raise SystemExit(main())

40
test/CMakeLists.txt
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@ -208,8 +208,46 @@ if(SDL3_TESTS_SUBPROJECT)
endforeach()
endif()
set(gamepad_images
gamepad_axis_arrow.bmp
gamepad_axis.bmp
gamepad_back.bmp
gamepad_battery_empty.bmp
gamepad_battery_full.bmp
gamepad_battery_low.bmp
gamepad_battery_medium.bmp
gamepad_battery_unknown.bmp
gamepad_battery_wired.bmp
gamepad_button_background.bmp
gamepad_button.bmp
gamepad_button_small.bmp
gamepad_face_abxy.bmp
gamepad_face_bayx.bmp
gamepad_face_sony.bmp
gamepad_front.bmp
gamepad_touchpad.bmp
)
set(gamepad_image_headers)
find_package(PythonInterp)
if(PYTHONINTERP_FOUND AND NOT PYTHON_VERSION_STRING VERSION_LESS "3.2")
set(xxd "${CMAKE_CURRENT_SOURCE_DIR}/../cmake/xxd.py")
foreach(bmp ${gamepad_images})
get_filename_component(bmp_we "${bmp}" NAME_WE)
set(intermediate "${CMAKE_CURRENT_BINARY_DIR}/${bmp_we}.h")
set(final "${CMAKE_CURRENT_SOURCE_DIR}/${bmp_we}.h")
# Don't add the 'final' headers to the output, to avoid marking them as GENERATED
# (generated files are removed when running the CLEAN target)
add_custom_command(OUTPUT "${intermediate}"
COMMAND "${PYTHON_EXECUTABLE}" "${xxd}" -i "${CMAKE_CURRENT_SOURCE_DIR}/${bmp}" "-o" "${intermediate}"
COMMAND "${CMAKE_COMMAND}" -E copy_if_different "${intermediate}" "${final}"
DEPENDS "${xxd}" "${bmp}"
)
list(APPEND gamepad_image_headers "${intermediate}" "${final}")
endforeach()
endif()
add_sdl_test_executable(testfile NONINTERACTIVE SOURCES testfile.c)
add_sdl_test_executable(testcontroller TESTUTILS SOURCES testcontroller.c gamepadutils.c)
add_sdl_test_executable(testcontroller TESTUTILS SOURCES testcontroller.c gamepadutils.c ${gamepad_image_headers})
add_sdl_test_executable(testgeometry TESTUTILS SOURCES testgeometry.c)
add_sdl_test_executable(testgl SOURCES testgl.c)
add_sdl_test_executable(testgles SOURCES testgles.c)