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Update lib/aura/Sources/aura/channels/Html5StreamChannel.hx

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Onek8 2025-06-04 19:10:07 +00:00
parent 074962d158
commit 2a1235b3d8
1 changed files with 128 additions and 4 deletions
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132
lib/aura/Sources/aura/channels/Html5StreamChannel.hx
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@ -4,9 +4,15 @@ package aura.channels;
import js.Browser;
import js.html.AudioElement;
import js.html.audio.AudioContext;
import js.html.audio.ChannelSplitterNode;
import js.html.audio.ChannelMergerNode;
import js.html.audio.GainNode;
import js.html.audio.MediaElementAudioSourceNode;
import js.html.URL;
import kha.SystemImpl;
import kha.js.MobileWebAudio;
import kha.js.MobileWebAudioChannel;
import aura.threading.Message;
@ -30,20 +36,67 @@ import aura.types.AudioBuffer;
class Html5StreamChannel extends BaseChannel {
static final virtualChannels: Array<Html5StreamChannel> = [];
final audioContext: AudioContext;
final audioElement: AudioElement;
final source: MediaElementAudioSourceNode;
final gain: GainNode;
final leftGain: GainNode;
final rightGain: GainNode;
final attenuationGain: GainNode;
final splitter: ChannelSplitterNode;
final merger: ChannelMergerNode;
var virtualPosition: Float;
var lastUpdateTime: Float;
var dopplerRatio: Float = 1.0;
var pitch: Float = 1.0;
public function new(sound: kha.Sound, loop: Bool) {
audioContext = new AudioContext();
audioElement = Browser.document.createAudioElement();
source = audioContext.createMediaElementSource(audioElement);
final mimeType = #if kha_debug_html5 "audio/ogg" #else "audio/mp4" #end;
final blob = new js.html.Blob([sound.compressedData.getData()], {type: mimeType});
final soundData: js.lib.ArrayBuffer = sound.compressedData.getData();
final blob = new js.html.Blob([soundData], {type: mimeType});
// TODO: if removing channels, use revokeObjectUrl() ?
// see https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL
audioElement.src = URL.createObjectURL(blob);
audioElement.loop = loop;
untyped audioElement.preservesPitch = false;
splitter = audioContext.createChannelSplitter(2);
leftGain = audioContext.createGain();
rightGain = audioContext.createGain();
attenuationGain = audioContext.createGain();
merger = audioContext.createChannelMerger(2);
gain = audioContext.createGain();
source.connect(splitter);
// The sound data needs to be decoded because `sounds.channels` returns `0`.
audioContext.decodeAudioData(soundData, function (buffer) {
// TODO: add more cases for Quad and 5.1 ? - https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Basic_concepts_behind_Web_Audio_API#audio_channels
switch (buffer.numberOfChannels) {
case 1:
splitter.connect(leftGain, 0);
splitter.connect(rightGain, 0);
case 2:
splitter.connect(leftGain, 0);
splitter.connect(rightGain, 1);
default:
}
});
leftGain.connect(merger, 0, 0);
rightGain.connect(merger, 0, 1);
merger.connect(attenuationGain);
attenuationGain.connect(gain);
gain.connect(audioContext.destination);
if (isVirtual()) {
virtualChannels.push(this);
@ -130,15 +183,32 @@ class Html5StreamChannel extends BaseChannel {
switch (message.id) {
// Because we're using a HTML implementation here, we cannot use the
// LinearInterpolator parameters
case ChannelMessageID.PVolume: audioElement.volume = cast message.data;
case ChannelMessageID.PVolume: attenuationGain.gain.value = cast message.data;
case ChannelMessageID.PPitch:
pitch = cast message.data;
updatePlaybackRate();
case ChannelMessageID.PDopplerRatio:
case ChannelMessageID.PDstAttenuation:
dopplerRatio = cast message.data;
updatePlaybackRate();
case ChannelMessageID.PDstAttenuation: gain.gain.value = cast message.data;
case ChannelMessageID.PVolumeLeft: leftGain.gain.value = cast message.data;
case ChannelMessageID.PVolumeRight: rightGain.gain.value = cast message.data;
default:
super.parseMessage(message);
}
}
function updatePlaybackRate() {
try {
audioElement.playbackRate = pitch * dopplerRatio;
}
catch (e) {
// Ignore. Unfortunately some browsers only support a certain range
// of playback rates, but this is not explicitly specified, so there's
// not much we can do here.
}
}
}
/**
@ -147,10 +217,50 @@ class Html5StreamChannel extends BaseChannel {
https://github.com/Kode/Kha/commit/12494b1112b64e4286b6a2fafc0f08462c1e7971
**/
class Html5MobileStreamChannel extends BaseChannel {
final audioContext: AudioContext;
final khaChannel: kha.js.MobileWebAudioChannel;
final leftGain: GainNode;
final rightGain: GainNode;
final attenuationGain: GainNode;
final splitter: ChannelSplitterNode;
final merger: ChannelMergerNode;
var dopplerRatio: Float = 1.0;
var pitch: Float = 1.0;
public function new(sound: kha.Sound, loop: Bool) {
audioContext = MobileWebAudio._context;
khaChannel = new kha.js.MobileWebAudioChannel(cast sound, loop);
@:privateAccess khaChannel.gain.disconnect(audioContext.destination);
@:privateAccess khaChannel.source.disconnect(@:privateAccess khaChannel.gain);
splitter = audioContext.createChannelSplitter(2);
leftGain = audioContext.createGain();
rightGain = audioContext.createGain();
merger = audioContext.createChannelMerger(2);
attenuationGain = audioContext.createGain();
@:privateAccess khaChannel.source.connect(splitter);
// TODO: add more cases for Quad and 5.1 ? - https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Basic_concepts_behind_Web_Audio_API#audio_channels
switch (sound.channels) {
case 1:
splitter.connect(leftGain, 0);
splitter.connect(rightGain, 0);
case 2:
splitter.connect(leftGain, 0);
splitter.connect(rightGain, 1);
default:
}
leftGain.connect(merger, 0, 0);
rightGain.connect(merger, 0, 1);
merger.connect(attenuationGain);
attenuationGain.connect(@:privateAccess khaChannel.gain);
@:privateAccess khaChannel.gain.connect(audioContext.destination);
}
public function play(retrigger: Bool) {
@ -181,12 +291,26 @@ class Html5MobileStreamChannel extends BaseChannel {
// LinearInterpolator parameters
case ChannelMessageID.PVolume: khaChannel.volume = cast message.data;
case ChannelMessageID.PPitch:
pitch = cast message.data;
updatePlaybackRate();
case ChannelMessageID.PDopplerRatio:
case ChannelMessageID.PDstAttenuation:
dopplerRatio = cast message.data;
updatePlaybackRate();
case ChannelMessageID.PDstAttenuation: attenuationGain.gain.value = cast message.data;
case ChannelMessageID.PVolumeLeft: leftGain.gain.value = cast message.data;
case ChannelMessageID.PVolumeRight: rightGain.gain.value = cast message.data;
default:
super.parseMessage(message);
}
}
function updatePlaybackRate() {
try {
@:privateAccess khaChannel.source.playbackRate.value = pitch * dopplerRatio;
}
catch (e) {}
}
}
#end