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Javascript bindings (#14)

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* Initial version ready

- bindings are in `bindings/emscripten.cpp`
- minimal Javascript example is in `examples/ggwave-js`

* add npm package + add test-ggwave.js

* js : rename export name to "ggwave_factory"

* update to v0.1.5

* Update README.md

* npm : add npm-publish target
This commit is contained in:
Georgi Gerganov
2021-01-24 17:25:58 +02:00
committed by GitHub
parent 105e0fd48d
commit 19f353018d
19 changed files with 485 additions and 57 deletions
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65
bindings/javascript/emscripten.cpp Normal file
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#include "ggwave/ggwave.h"
#include <emscripten.h>
#include <emscripten/bind.h>
EMSCRIPTEN_BINDINGS(ggwave) {
emscripten::enum_<ggwave_SampleFormat>("SampleFormat")
.value("GGWAVE_SAMPLE_FORMAT_UNDEFINED", GGWAVE_SAMPLE_FORMAT_UNDEFINED)
.value("GGWAVE_SAMPLE_FORMAT_U8", GGWAVE_SAMPLE_FORMAT_U8)
.value("GGWAVE_SAMPLE_FORMAT_I8", GGWAVE_SAMPLE_FORMAT_I8)
.value("GGWAVE_SAMPLE_FORMAT_U16", GGWAVE_SAMPLE_FORMAT_U16)
.value("GGWAVE_SAMPLE_FORMAT_I16", GGWAVE_SAMPLE_FORMAT_I16)
.value("GGWAVE_SAMPLE_FORMAT_F32", GGWAVE_SAMPLE_FORMAT_F32)
;
emscripten::enum_<ggwave_TxProtocolId>("TxProtocolId")
.value("GGWAVE_TX_PROTOCOL_AUDIBLE_NORMAL", GGWAVE_TX_PROTOCOL_AUDIBLE_NORMAL)
.value("GGWAVE_TX_PROTOCOL_AUDIBLE_FAST", GGWAVE_TX_PROTOCOL_AUDIBLE_FAST)
.value("GGWAVE_TX_PROTOCOL_AUDIBLE_FASTEST", GGWAVE_TX_PROTOCOL_AUDIBLE_FASTEST)
.value("GGWAVE_TX_PROTOCOL_ULTRASOUND_NORMAL", GGWAVE_TX_PROTOCOL_ULTRASOUND_NORMAL)
.value("GGWAVE_TX_PROTOCOL_ULTRASOUND_FAST", GGWAVE_TX_PROTOCOL_ULTRASOUND_FAST)
.value("GGWAVE_TX_PROTOCOL_ULTRASOUND_FASTEST", GGWAVE_TX_PROTOCOL_ULTRASOUND_FASTEST)
;
emscripten::class_<ggwave_Parameters>("Parameters")
.constructor<>()
.property("sampleRateInp", &ggwave_Parameters::sampleRateInp)
.property("sampleRateOut", &ggwave_Parameters::sampleRateOut)
.property("samplesPerFrame", &ggwave_Parameters::samplesPerFrame)
.property("sampleFormatInp", &ggwave_Parameters::sampleFormatInp)
.property("sampleFormatOut", &ggwave_Parameters::sampleFormatOut)
;
emscripten::function("getDefaultParameters", &ggwave_getDefaultParameters);
emscripten::function("init", &ggwave_init);
emscripten::function("free", &ggwave_free);
emscripten::function("encode", emscripten::optional_override(
[](ggwave_Instance instance,
const std::string & data,
ggwave_TxProtocolId txProtocolId,
int volume) {
auto n = ggwave_encode(instance, data.data(), data.size(), txProtocolId, volume, nullptr, 1);
std::vector<char> result(n);
result.resize(n);
ggwave_encode(instance, data.data(), data.size(), txProtocolId, volume, result.data(), 0);
return emscripten::val(
emscripten::typed_memory_view(result.size(),
result.data()));
}));
emscripten::function("decode", emscripten::optional_override(
[](ggwave_Instance instance,
const std::string & data) {
char output[256];
auto n = ggwave_decode(instance, data.data(), data.size(), output);
if (n > 0) {
return std::string(output, n);
}
return std::string();
}));
}