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libcimbar/WASM.md

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Small docs updates
2021-02-04 10:26:04 +08:00
## Demo encoder
No, I'm not making a PR for docs updates
2020-10-20 20:08:57 +08:00
[cimbar.org](https://cimbar.org)
Small docs updates
2021-02-04 10:26:04 +08:00
## Releases
Update docs for mode B! Includes: * new performance numbers. Very exciting. Very cool. Ambient lighting helps! * deprecating the old 8-color mode ("mode 8C" under the new naming scheme). This simplifies things, and a newer, faster format is waiting in the wings... * misc updates based on what I've learned
2024-02-13 11:29:30 +08:00
wasm and asm.js releases are available [here](https://github.com/sz3/libcimbar/releases/latest). The wasm build is what cimbar.org uses. [cimbar_js.html](https://github.com/sz3/libcimbar/releases/latest/cimbar_js.html) can be downloaded and opened/run in a local web browser -- no install required.
Small docs updates
2021-02-04 10:26:04 +08:00
## Build
No, I'm not making a PR for docs updates
2020-10-20 20:08:57 +08:00
Update docs for mode B! Includes: * new performance numbers. Very exciting. Very cool. Ambient lighting helps! * deprecating the old 8-color mode ("mode 8C" under the new naming scheme). This simplifies things, and a newer, faster format is waiting in the wings... * misc updates based on what I've learned
2024-02-13 11:29:30 +08:00
To build, use the `package-wasm.sh` script in a docker container:
```
docker run --mount type=bind,source="$(pwd)",target="/usr/src/app" -it emscripten/emsdk:3.1.39
```
Then, inside the container:
```
bash /usr/src/app/package-wasm.sh
```
## Alternative build for the adventurous
Alternatively, if you have a local emscripten setup, you can try to run the package-wasm.sh commands piecemeal:
To build opencv.js:
More wasm* build instructions, and removing some unused variables * technically, because we're using SINGLE_FILE=1 "instead of" WASM=1, we're building asm.js and not "wasm". However, with that one change to the CMakeLists.txt, we get wasm build products, and therefore I do not see any problem using wasm as shorthand for all this nonsense!
2020-09-26 18:04:51 +08:00
```
cd /path/to/opencv
mkdir opencv-build-wasm
cd opencv-build-wasm
Update docs for mode B! Includes: * new performance numbers. Very exciting. Very cool. Ambient lighting helps! * deprecating the old 8-color mode ("mode 8C" under the new naming scheme). This simplifies things, and a newer, faster format is waiting in the wings... * misc updates based on what I've learned
2024-02-13 11:29:30 +08:00
python3 ../platforms/js/build_js.py build_wasm --build_wasm --emscripten_dir=/path/to/emscripten
More wasm* build instructions, and removing some unused variables * technically, because we're using SINGLE_FILE=1 "instead of" WASM=1, we're building asm.js and not "wasm". However, with that one change to the CMakeLists.txt, we get wasm build products, and therefore I do not see any problem using wasm as shorthand for all this nonsense!
2020-09-26 18:04:51 +08:00
```
With opencv.js built:
Very-hacky way to get the WASM build up and running Moving extractor into the non-WASM projects, and a very dubious class split (Encoder -> Encoder+FileEncoder). Not very happy with this.
2020-09-23 14:57:51 +08:00
```
mkdir build-wasm
cd build-wasm
source /path/to/emscripten/emsdk/emsdk_env.sh
No, I'm not making a PR for docs updates
2020-10-20 20:08:57 +08:00
emcmake cmake .. -DUSE_WASM=1 -DOPENCV_DIR=/path/to/opencv
Update docs for mode B! Includes: * new performance numbers. Very exciting. Very cool. Ambient lighting helps! * deprecating the old 8-color mode ("mode 8C" under the new naming scheme). This simplifies things, and a newer, faster format is waiting in the wings... * misc updates based on what I've learned
2024-02-13 11:29:30 +08:00
make -j5 install
Very-hacky way to get the WASM build up and running Moving extractor into the non-WASM projects, and a very dubious class split (Encoder -> Encoder+FileEncoder). Not very happy with this.
2020-09-23 14:57:51 +08:00
```
No, I'm not making a PR for docs updates
2020-10-20 20:08:57 +08:00
(do `-DUSE_WASM=2` to use asm.js instead of wasm)
Small docs updates
2021-02-04 10:26:04 +08:00
## What about a WASM cimbar decoder?
Some day!