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