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sysaudio: webaudio: Use device descriptor to create suitable audio

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iddev5 2022-07-14 23:30:15 +05:30 • committed by Stephen Gutekanst
parent 43936df45b
commit 94c4d3a679
1 changed files with 15 additions and 3 deletions
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18
sysaudio/src/webaudio.zig
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@ -52,12 +52,24 @@ pub fn deinit(audio: Audio) void {
pub fn waitEvents(_: Audio) void {}
const default_channel_count = 2;
const default_sample_rate = 48000;
pub fn requestDevice(audio: Audio, config: DeviceDescriptor) Error!Device {
const context = audio.context_constructor.construct(&.{});
// NOTE: WebAudio only supports F32 audio format, so config.format is unused
const mode = config.mode orelse .output;
const channels = config.channels orelse default_channel_count;
const sample_rate = config.sample_rate orelse default_sample_rate;
const context_options = js.createMap();
defer context_options.deinit();
context_options.set("sampleRate", js.createNumber(@intToFloat(f64, sample_rate)));
const context = audio.context_constructor.construct(&.{context_options.toValue()});
_ = context.call("suspend", &.{});
const input_channels = if (config.mode.? == .input) js.createNumber(@intToFloat(f64, config.channels.?)) else js.createUndefined();
const output_channels = if (config.mode.? == .output) js.createNumber(@intToFloat(f64, config.channels.?)) else js.createUndefined();
const input_channels = if (mode == .input) js.createNumber(@intToFloat(f64, channels)) else js.createUndefined();
const output_channels = if (mode == .output) js.createNumber(@intToFloat(f64, channels)) else js.createUndefined();
const node = context.call("createScriptProcessor", &.{ js.createNumber(4096), input_channels, output_channels }).view(.object);
defer node.deinit();