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45 lines
1.3 KiB
45 lines
1.3 KiB
/*
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* Copyright 2019 Google LLC
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef WasmCommon_DEFINED
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#define WasmCommon_DEFINED
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#include <emscripten.h>
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#include <emscripten/bind.h>
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#include "include/core/SkColor.h"
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using namespace emscripten;
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// Self-documenting types
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using JSArray = emscripten::val;
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using JSObject = emscripten::val;
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using JSString = emscripten::val;
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using SkPathOrNull = emscripten::val;
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using TypedArray = emscripten::val;
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using Uint8Array = emscripten::val;
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using Uint16Array = emscripten::val;
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using Uint32Array = emscripten::val;
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using Float32Array = emscripten::val;
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/**
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* Create a typed-array (in the JS heap) and initialize it with the provided
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* data (from the wasm heap). The caller is responsible for matching the type of data
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* with the specified arrayType.
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*
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* TODO: can we specialize this on T and provide the correct string?
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* e.g. T==uint8_t --> "Uint8Array"
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*/
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template <typename T>
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TypedArray MakeTypedArray(int count, const T src[], const char arrayType[]) {
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emscripten::val length = emscripten::val(count);
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emscripten::val jarray = emscripten::val::global(arrayType).new_(count);
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jarray.call<void>("set", val(typed_memory_view(count, src)));
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return jarray;
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}
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#endif
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