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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| #!/bin/bash | ||
| set -e | ||
| mkdir -p build | ||
| cd build | ||
|
|
||
| cat > wasmapi.c <<-EOF | ||
| #include "rtl_433.h" | ||
| #include "r_private.h" | ||
| #include "r_api.h" | ||
| uint32_t analyseBuffer[1024]; | ||
| int analyse(uint32_t* pulse, int count) | ||
| { | ||
| r_cfg_t g_cfg; | ||
| r_cfg_t* cfg = &g_cfg; | ||
| r_init_cfg(cfg); | ||
| cfg->report_time = REPORT_TIME_OFF; | ||
| register_all_protocols(cfg, 0); | ||
| pulse_data_t data = {0}; | ||
| data.sample_rate = 1000000; | ||
| for (int i=0; i<count; i+=2) | ||
| { | ||
| data.pulse[i/2] = pulse[i]; | ||
| data.gap[i/2] = i < count ? pulse[i+1] : 0; | ||
| data.num_pulses++; | ||
| } | ||
| add_json_output(cfg, NULL); | ||
| return run_ook_demods(&cfg->demod->r_devs, &data); | ||
| } | ||
| EOF | ||
|
|
||
| cat > wasmtest.html <<-EOF | ||
| <script src="wasm.js"></script> | ||
| <script> | ||
| var HEAPU8; | ||
| var HEAPU32; | ||
| var TOTAL_MEMORY = 67108864; | ||
| var WASM_PAGE_SIZE = 4096; | ||
| var env = { | ||
| emscripten_memcpy_big: (dest, src, num) => { | ||
| HEAPU8.copyWithin(dest, src, src + num); | ||
| }, | ||
| emscripten_date_now: () => { return Date.now(); }, | ||
| fd_write:(fd, iov, iovcnt, pnum) => { | ||
| var ret = 0; | ||
| for (var i = 0; i < iovcnt; i++) { | ||
| var ptr = HEAPU32[iov>>2]; | ||
| var len = HEAPU32[(iov+4)>>2]; | ||
| iov += 8; | ||
| var msg = ""; | ||
| for (var j=ptr; j<ptr+len; j++) | ||
| msg += String.fromCharCode(HEAPU8[j]); | ||
| if (msg != "" && msg != "\n") | ||
| console.log(msg); | ||
| ret += len; | ||
| } | ||
| HEAPU32[pnum>>2] = ret; | ||
| return 0; | ||
| }, | ||
| emscripten_resize_heap: () => { throw "emscripten_resize_heap not implemented" }, | ||
| memory:new WebAssembly.Memory({ 'initial': TOTAL_MEMORY / WASM_PAGE_SIZE, 'maximum': TOTAL_MEMORY / WASM_PAGE_SIZE }), | ||
| }; | ||
| for (var i of ["__assert_fail", "exit", "strftime", "fd_close", "_tzset_js", "_mktime_js", | ||
| "_localtime_js", "__syscall_fcntl64", "__syscall_openat", "__syscall_ioctl", "fd_read", | ||
| "emscripten_resize_heap", "fd_seek"]) | ||
| { | ||
| env[i] = () => { throw "not implemented" }; | ||
| } | ||
| WebAssembly.instantiate(wasmBinary, {env:env, wasi_snapshot_preview1: env}).then(obj => | ||
| { | ||
| var exports = obj.instance.exports; | ||
| HEAPU8 = new Uint8Array(exports.memory.buffer); | ||
| HEAPU32 = new Uint32Array(exports.memory.buffer); | ||
| exports.__wasm_call_ctors(); | ||
| var analyseBuffer = new Uint32Array( | ||
| exports.memory.buffer, | ||
| exports.analyseBuffer.value, | ||
| 1024*4 | ||
| ); | ||
| var testSignal = [520, 500, 420, 520, 400, 520, 440, 520, 400, 520, 400, 540, 400, 520, 440, 500, 440, 480, 440, 500, 440, 500, 460, 440, 460, 500, 420, 500, 440, 520, 420, 520, 420, 500, 460, 460, 480, 440, 480, 440, 500, 460, 480, 460, 460, 460, 480, 920, 980, 940, 960, 460, 500, 440, 500, 440, 480, 460, 480, 920, 500, 460, 500, 420, 980, 920, 980, 940, 480, 440, 500, 460, 460, 460, 960, 940, 980, 920, 500, 460, 480, 440, 480, 440, 960, 460, 520, 920, 960, 480, 480, 420, 500, 460, 480, 440, 500, 920, 480, 440, 500, 440, 500, 420, 500, 440, 500, 440, 980, 960, 440, 460, 480, 460, 500, 420, 520, 440, 480, 460, 480, 420, 500, 460, 480, 440, 500, 440, 500, 440, 480, 440, 480, 460, 980, 440, 480, 960, 960, 440, 500, 460, 460, 960, 460, 460, 500, 420, 980, 440, 500, 440, 500, 920, 960, 960, 960, 940, 980, 920, 960, 460, 500, 940, 960, 960, 460, 460, 960, 460, 480, 0] | ||
| for (var i=0; i<testSignal.length; i++) | ||
| analyseBuffer[i] = testSignal[i]; | ||
| console.log("result", exports.analyse(exports.analyseBuffer.value, testSignal.length)); | ||
| }); | ||
| </script> | ||
| EOF | ||
|
|
||
| INCLUDES="-I ../include" | ||
| SOURCES1=$(find ../src -maxdepth 1 -name '*.c' -print) | ||
| SOURCES2=$(find ../src/devices -maxdepth 1 -name '*.c' -print) | ||
| SOURCES="$SOURCES1 $SOURCES2 wasmapi.c" | ||
| EXPORTED="['_analyse', '_analyseBuffer']" | ||
| emcc ${INCLUDES} ${SOURCES} -gsource-map -g3 -O3 -s TOTAL_STACK=1048576 -s TOTAL_MEMORY=67108864 -s MINIMAL_RUNTIME=1 -s WASM=1 -s EXPORTED_FUNCTIONS="${EXPORTED}" -o rtl433.js -DEMSCRIPTEN -s ERROR_ON_UNDEFINED_SYMBOLS=0 --source-map-base http://localhost:8081/build/ | ||
|
|
||
| node <<-EOF | ||
| var fs = require("fs"); | ||
| var prefix = 'wasmBinary = (() => { var wasmcode="'; | ||
| var suffix = '"; return Uint8Array.from(atob(wasmcode), c => c.charCodeAt(0));})();'; | ||
| fs.writeFileSync("wasm.js", prefix + fs.readFileSync("rtl433.wasm").toString("base64") + suffix); | ||
| EOF |
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