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anticore 2024-04-08 15:29:55 +01:00
parent 70c021fdf3
commit a2d5d39ec4
1 changed files with 12 additions and 18 deletions
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30
examples/code/wasm/index.html
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@ -17,31 +17,25 @@
.then((response) => response.arrayBuffer()) .then((response) => response.arrayBuffer())
.then((bytes) => WebAssembly.instantiate(bytes, { m: Math })) .then((bytes) => WebAssembly.instantiate(bytes, { m: Math }))
.then(({ instance }) => { .then(({ instance }) => {
const context = new AudioContext(); const context = new AudioContext({ sampleRate: 44100 });
let wasmBuffer = instance.exports.t.value let frames = instance.exports.t.value
? new Int16Array( ? instance.exports.l.value / 4
instance.exports.m.buffer, : instance.exports.l.value / 8;
instance.exports.s.value,
instance.exports.l.value / 2
)
: new Float32Array(
instance.exports.m.buffer,
instance.exports.s.value,
instance.exports.l.value / 4
);
const buffer = context.createBuffer( let wasmBuffer = new Float32Array(
2, instance.exports.m.buffer,
context.sampleRate * 2, instance.exports.s.value,
context.sampleRate frames * 2
); );
const buffer = context.createBuffer(2, frames, context.sampleRate);
// convert wasm buffer to audio buffer // convert wasm buffer to audio buffer
for (let channel = 0; channel < 2; channel++) { for (let channel = 0; channel < 2; channel++) {
const buffering = buffer.getChannelData(channel); const buffering = buffer.getChannelData(channel);
for (let i = 0; i < context.sampleRate * 2; i++) { for (let i = 0; i < frames; i++) {
buffering[i] = wasmBuffer[i]; buffering[i] = wasmBuffer[i * 2 + channel];
} }
} }