mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2024-11-27 12:40:05 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add possibility for disabling inlining wasm in opencv.js

Browse Source
This commit is contained in:
anderskiaer 2023-03-11 21:03:18 +01:00
parent e03e2e7f94
commit 6c763e1ea5
3 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
doc/js_tutorials/js_setup/js_setup/js_setup.markdown
View File

@ -83,6 +83,9 @@ Building OpenCV.js from Source
It requires `python` and `cmake` installed in your development environment.
-# The build script builds asm.js version by default. To build WebAssembly version, append `--build_wasm` switch.
By default everything is bundled into one JavaScript file by `base64` encoding the WebAssembly code. For production
builds you can add `--disable_single_file` which will reduce total size by writing the WebAssembly code
to a dedicated `.wasm` file which the generated JavaScript file will automatically load.
For example, to build wasm version in `build_wasm` directory:
@code{.bash}

2
modules/js/CMakeLists.txt
View File

@ -70,7 +70,7 @@ if(COMPILE_FLAGS)
endif()
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} --memory-init-file 0 -s TOTAL_MEMORY=128MB -s WASM_MEM_MAX=1GB -s ALLOW_MEMORY_GROWTH=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s MODULARIZE=1 -s SINGLE_FILE=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s MODULARIZE=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s EXPORT_NAME=\"'cv'\" -s DEMANGLE_SUPPORT=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s FORCE_FILESYSTEM=1 --use-preload-plugins --bind --post-js ${JS_HELPER} ${COMPILE_FLAGS}")
set_target_properties(${the_module} PROPERTIES LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS}")

3
platforms/js/build_js.py
View File

@ -180,6 +180,8 @@ class Builder:
flags += "-s WASM=1 "
elif self.options.disable_wasm:
flags += "-s WASM=0 "
if not self.options.disable_single_file:
flags += "-s SINGLE_FILE=1 "
if self.options.threads:
flags += "-s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=4 "
else:
@ -233,6 +235,7 @@ if __name__ == "__main__":
parser.add_argument('--emscripten_dir', default=emscripten_dir, help="Path to Emscripten to use for build (deprecated in favor of 'emcmake' launcher)")
parser.add_argument('--build_wasm', action="store_true", help="Build OpenCV.js in WebAssembly format")
parser.add_argument('--disable_wasm', action="store_true", help="Build OpenCV.js in Asm.js format")
parser.add_argument('--disable_single_file', action="store_true", help="Do not merge JavaScript and WebAssembly into one single file")
parser.add_argument('--threads', action="store_true", help="Build OpenCV.js with threads optimization")
parser.add_argument('--simd', action="store_true", help="Build OpenCV.js with SIMD optimization")
parser.add_argument('--build_test', action="store_true", help="Build tests")