client: add mod tracker
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Squashed commit of the following:

commit 54f0b67b25
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 21:27:15 2022 +0100

    use nextTick instead of setTimeout

commit 6998cae7e3
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 21:14:55 2022 +0100

    my absolute terrible fix to the unhide issue

commit 79f546d150
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 21:01:35 2022 +0100

    stop player on hide/unhide

commit 6b7f13e8ef
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 10:36:59 2022 +0100

    make webkit style range slider the same

commit 8a267c5cdc
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 01:16:18 2022 +0100

    restyling range inputs

commit c39e1671b2
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 00:57:47 2022 +0100

    make module seekable

commit c1762f27ae
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 00:14:35 2022 +0100

    remove accesskey attribs

commit 08f75a01f1
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 00:12:23 2022 +0100

    v-else on play button

commit 9302a9faaa
Author: Puniko <me@absturztaube.ch>
Date:   Thu Dec 29 00:08:19 2022 +0100

    replace filter with some

commit bffd15daed
Author: Puniko <me@absturztaube.ch>
Date:   Wed Dec 28 09:13:20 2022 +0100

    add chiptune2 and libopenmpt into COPYING

commit 794298c21c
Author: Puniko <me@absturztaube.ch>
Date:   Tue Dec 27 15:32:43 2022 +0100

    little cleanup

commit f383aec1cd
Author: Puniko <me@absturztaube.ch>
Date:   Tue Dec 27 15:23:25 2022 +0100

    repeat only once and proper handling of track ending

commit fdaa9614c9
Author: Puniko <me@absturztaube.ch>
Date:   Tue Dec 27 14:52:20 2022 +0100

    prevent losing connection when downloading module

commit 6c5723c795
Author: Puniko <me@absturztaube.ch>
Date:   Tue Dec 27 14:45:59 2022 +0100

    colours!!! 🌈

commit dba4f0a4a9
Author: Puniko <me@absturztaube.ch>
Date:   Tue Dec 27 13:01:06 2022 +0100

    replace  with i18n

commit 4234dfbdbc
Author: Puniko <me@absturztaube.ch>
Date:   Mon Dec 26 15:47:10 2022 +0100

    retab

commit 0cc1ea8c3e
Author: Puniko <me@absturztaube.ch>
Date:   Mon Dec 26 15:19:28 2022 +0100

    include libopenmpt tracker to foundkey

commit c2437c696a
Author: Puniko <me@absturztaube.ch>
Date:   Mon Dec 26 12:08:49 2022 +0100

    add libopenmpt

Reviewed-on: #306
Changelog: Added
This commit is contained in:
Johann150 2022-12-29 21:34:57 +01:00
parent ed9d4023d4
commit ed27f61a4d
Signed by: Johann150
GPG Key ID: 9EE6577A2A06F8F1
9 changed files with 732 additions and 1 deletions

3
.gitignore vendored
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@ -11,6 +11,9 @@
# nano
.swp
# vimlocal
.vimlocal
# Node.js
node_modules
report.*.json

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@ -13,3 +13,11 @@ https://github.com/muan/emojilib/blob/master/LICENSE
RsaSignature2017 implementation by Transmute Industries Inc
License: MIT
https://github.com/transmute-industries/RsaSignature2017/blob/master/LICENSE
Chiptune2.js by Simon Gündling
License: MIT
https://github.com/deskjet/chiptune2.js#license
libopenmpt (as part of openmpt) by OpenMPT
License: BSD 3-Clause
https://github.com/OpenMPT/openmpt/blob/master/LICENSE

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@ -36,6 +36,7 @@ html
link(rel='prefetch' href=config.images.error)
link(rel='stylesheet' href='/assets/fontawesome/css/all.css')
link(rel='modulepreload' href=`/assets/${clientEntry.file}`)
script(src='/client-assets/libopenmpt.js')
each href in clientEntry.css
link(rel='preload' href=`/assets/${href}` as='style')
@ -63,6 +64,7 @@ html
script.
var VERSION = "#{version}";
var CLIENT_ENTRY = "#{clientEntry.file}";
window.libopenmpt = window.Module;
body
noscript: p

File diff suppressed because one or more lines are too long

Binary file not shown.

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@ -6,6 +6,7 @@
<template v-for="media in mediaList.filter(media => previewable(media))">
<XVideo v-if="media.type.startsWith('video')" :key="media.id" :video="media"/>
<XImage v-else-if="media.type.startsWith('image')" :key="media.id" class="image" :data-id="media.id" :image="media" :raw="raw"/>
<XModPlayer v-else-if="isModule(media)" :key="media.id" :module="media"/>
</template>
</div>
</div>
@ -21,7 +22,8 @@ import 'photoswipe/style.css';
import XBanner from './media-banner.vue';
import XImage from './media-image.vue';
import XVideo from './media-video.vue';
import { FILE_TYPE_BROWSERSAFE } from '@/const';
import XModPlayer from './mod-player.vue';
import { FILE_TYPE_BROWSERSAFE, FILE_EXT_TRACKER_MODULES } from '@/const';
const props = defineProps<{
mediaList: foundkey.entities.DriveFile[];
@ -123,8 +125,16 @@ onMounted(() => {
const previewable = (file: foundkey.entities.DriveFile): boolean => {
if (file.type === 'image/svg+xml') return true; // svgwebpublic/thumbnailpngtrue
// FILE_TYPE_BROWSERSAFE
if (isModule(file)) return true;
return (file.type.startsWith('video') || file.type.startsWith('image')) && FILE_TYPE_BROWSERSAFE.includes(file.type);
};
const isModule = (file: foundkey.entities.DriveFile): boolean => {
return FILE_EXT_TRACKER_MODULES.some((ext) => {
return file.name.toLowerCase().endsWith("." + ext);
});
};
</script>
<style lang="scss" scoped>

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@ -0,0 +1,403 @@
<template>
<div class="mod-player-disabled" v-if="hide" @click="toggleVisible()">
<div>
<b><i class="fas fa-exlamation-triangle"></i> {{ i18n.ts.sensitive }}</b>
<span>{{ i18n.ts.clickToShow }}</span>
</div>
</div>
<div class="mod-player-enabled" v-else>
<div class="pattern-display">
<canvas class="pattern-canvas" ref="displayCanvas"></canvas>
</div>
<div class="controls">
<button class="play" @click="playPause()">
<i class="fas fa-pause" v-if="playing"></i>
<i class="fas fa-play" v-else></i>
</button>
<button class="stop" @click="stop()">
<i class="fas fa-stop"></i>
</button>
<input class="progress" type="range" min="0" max="1" v-model="position" step="0.1" ref="progress" @mousedown="initSeek()" @mouseup="performSeek()"/>
<input type="range" min="0" max="1" v-model="player.context.gain.value" step="0.1"/>
<a class="download" :title="i18n.ts.download" :href="module.url" target="_blank">
<i class="fas fa-download"></i>
</a>
</div>
<i class="fas fa-eye-slash" @click="toggleVisible()"></i>
</div>
</template>
<script lang="ts" setup>
import { ref, nextTick } from 'vue';
import * as foundkey from 'foundkey-js';
import { i18n } from '@/i18n';
import { defaultStore } from '@/store';
import { ChiptuneJsPlayer, ChiptuneJsConfig } from '@/scripts/chiptune2';
const CHAR_WIDTH = 6;
const CHAR_HEIGHT = 12;
const ROW_OFFSET_Y = 10;
const colours = {
background: '#000000',
default: {
active: '#ffffff',
inactive: '#808080'
},
quarter: {
active: '#ffff00',
inactive: '#ffe135'
},
instr: {
active: '#80e0ff',
inactive: '#0099cc'
},
volume: {
active: '#80ff80',
inactive: '#008000'
},
fx: {
active: '#ff80e0',
inactive: '#800060'
},
operant: {
active: '#ffe080',
inactive: '#806000'
}
};
const props = defineProps<{
module: foundkey.entities.DriveFile
}>();
let hide = ref((defaultStore.state.nsfw === 'force') ? true : props.module.isSensitive && (defaultStore.state.nsfw !== 'ignore'));
let playing = ref(false);
let displayCanvas = ref<HTMLCanvasElement>(null);
let progress = ref<HTMLProgressElement>(null);
let position = ref(0);
const player = ref(new ChiptuneJsPlayer(new ChiptuneJsConfig()));
const rowBuffer = 24;
let buffer = null;
let isSeeking = false;
player.value.load(props.module.url).then((result) => {
buffer = result;
try {
player.value.play(buffer);
display();
} catch (e) {
console.warn(e);
}
player.value.stop();
}).catch((error) => {
console.error(error);
});
function playPause() {
player.value.addHandler('onRowChange', () => {
progress.value.max = player.value.duration();
if (!isSeeking) {
position.value = player.value.position() % player.value.duration();
}
display();
});
player.value.addHandler('onEnded', () => {
stop();
});
if (player.value.currentPlayingNode === null) {
player.value.play(buffer);
player.value.seek(position.value);
playing.value = true;
} else {
player.value.togglePause();
playing.value = !player.value.currentPlayingNode.paused;
}
}
function stop(noDisplayUpdate = false) {
player.value.stop();
playing.value = false;
if (!noDisplayUpdate) {
try {
player.value.play(buffer);
display();
} catch (e) {
console.warn(e);
}
}
player.value.stop();
position.value = 0;
player.value.handlers = [];
}
function initSeek() {
isSeeking = true;
}
function performSeek() {
player.value.seek(position.value);
display();
isSeeking = false;
}
function toggleVisible() {
hide.value = !hide.value;
nextTick(() => { stop(hide.value); });
}
function display() {
if (!displayCanvas.value) {
stop();
return;
}
const canvas = displayCanvas.value;
const pattern = player.value.getPattern();
const row = player.value.getRow();
let nbChannels = 0;
if (player.value.currentPlayingNode) {
nbChannels = player.value.currentPlayingNode.nbChannels;
}
if (canvas.width !== 12 + 84 * nbChannels + 2) {
canvas.width = 12 + 84 * nbChannels + 2;
canvas.height = 12 * rowBuffer;
}
const nbRows = player.value.getPatternNumRows(pattern);
const ctx = canvas.getContext('2d');
ctx.font = '10px monospace';
ctx.fillStyle = colours.background;
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = colours.default.inactive;
for (let rowOffset = 0; rowOffset < rowBuffer; rowOffset++) {
const rowToDraw = row - rowBuffer / 2 + rowOffset;
if (rowToDraw >= 0 && rowToDraw < nbRows) {
const active = (rowToDraw === row) ? 'active' : 'inactive';
let rowText = parseInt(rowToDraw).toString(16);
if (rowText.length === 1) {
rowText = '0' + rowText;
}
ctx.fillStyle = colours.default[active];
if (rowToDraw % 4 === 0) {
ctx.fillStyle = colours.quarter[active];
}
ctx.fillText(rowText, 0, 10 + rowOffset * 12);
for (let channel = 0; channel < nbChannels; channel++) {
const part = player.value.getPatternRowChannel(pattern, rowToDraw, channel);
const baseOffset = (2 + (part.length + 1) * channel) * CHAR_WIDTH;
const baseRowOffset = ROW_OFFSET_Y + rowOffset * CHAR_HEIGHT;
ctx.fillStyle = colours.default[active];
ctx.fillText("|", baseOffset, baseRowOffset);
const note = part.substring(0, 3);
ctx.fillStyle = colours.default[active];
ctx.fillText(note, baseOffset + CHAR_WIDTH, baseRowOffset);
const instr = part.substring(4, 6);
ctx.fillStyle = colours.instr[active];
ctx.fillText(instr, baseOffset + CHAR_WIDTH * 5, baseRowOffset);
const volume = part.substring(6, 9);
ctx.fillStyle = colours.volume[active];
ctx.fillText(volume, baseOffset + CHAR_WIDTH * 7, baseRowOffset);
const fx = part.substring(10, 11);
ctx.fillStyle = colours.fx[active];
ctx.fillText(fx, baseOffset + CHAR_WIDTH * 11, baseRowOffset);
const op = part.substring(11, 13);
ctx.fillStyle = colours.operant[active];
ctx.fillText(op, baseOffset + CHAR_WIDTH * 12, baseRowOffset);
}
}
}
}
</script>
<style lang="scss" scoped>
.mod-player-enabled {
position: relative;
display: flex;
flex-direction: column;
> i {
display: block;
position: absolute;
border-radius: 6px;
background-color: var(--fg);
color: var(--accentLighten);
font-size: 14px;
opacity: .5;
padding: 3px 6px;
text-align: center;
cursor: pointer;
top: 12px;
right: 12px;
}
> .pattern-display {
width: 100%;
height: 100%;
overflow-x: scroll;
overflow-y: hidden;
background-color: black;
text-align: center;
.pattern-canvas {
background-color: black;
height: 100%;
}
}
> .controls {
display: flex;
width: 100%;
background-color: var(--bg);
> * {
padding: 4px 8px;
}
> button, a {
border: none;
background-color: transparent;
color: var(--accent);
cursor: pointer;
&:hover {
background-color: var(--fg);
}
}
> input[type=range] {
height: 21px;
-webkit-appearance: none;
width: 90px;
padding: 0;
margin: 4px 8px;
overflow-x: hidden;
&:focus {
outline: none;
&::-webkit-slider-runnable-track {
background: var(--bg);
}
&::-ms-fill-lower, &::-ms-fill-upper {
background: var(--bg);
}
}
&::-webkit-slider-runnable-track {
width: 100%;
height: 100%;
cursor: pointer;
border-radius: 0;
animate: 0.2s;
background: var(--bg);
border: 1px solid var(--fg);
overflow-x: hidden;
}
&::-webkit-slider-thumb {
border: none;
height: 100%;
width: 14px;
border-radius: 0;
background: var(--accentLighten);
cursor: pointer;
-webkit-appearance: none;
box-shadow: calc(-100vw - 14px) 0 0 100vw var(--accent);
clip-path: polygon(1px 0, 100% 0, 100% 100%, 1px 100%, 1px calc(50% + 10.5px), -100vw calc(50% + 10.5px), -100vw calc(50% - 10.5px), 0 calc(50% - 10.5px));
z-index: 1;
}
&::-moz-range-track {
width: 100%;
height: 100%;
cursor: pointer;
border-radius: 0;
animate: 0.2s;
background: var(--bg);
border: 1px solid var(--fg);
}
&::-moz-range-progress {
cursor: pointer;
height: 100%;
background: var(--accent);
}
&::-moz-range-thumb {
border: none;
height: 100%;
border-radius: 0;
width: 14px;
background: var(--accentLighten);
cursor: pointer;
}
&::-ms-track {
width: 100%;
height: 100%;
cursor: pointer;
border-radius: 0;
animate: 0.2s;
background: transparent;
border-color: transparent;
color: transparent;
}
&::-ms-fill-lower {
background: var(--accent);
border: 1px solid var(--fg);
border-radius: 0;
}
&::-ms-fill-upper {
background: var(--bg);
border: 1px solid var(--fg);
border-radius: 0;
}
&::-ms-thumb {
margin-top: 1px;
border: none;
height: 100%;
width: 14px;
border-radius: 0;
background: var(--accentLighten);
cursor: pointer;
}
&.progress {
flex-grow: 1;
min-width: 0;
}
}
}
}
.mod-player-disabled {
display: flex;
justify-content: center;
align-items: center;
background: #111;
color: #fff;
> div {
display: table-cell;
text-align: center;
font-size: 12px;
> b {
display: block;
}
}
}
</style>

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@ -46,6 +46,44 @@ export const FILE_TYPE_BROWSERSAFE = [
'audio/x-flac',
'audio/vnd.wave',
];
export const FILE_EXT_TRACKER_MODULES = [
'mod',
's3m',
'xm',
'it',
'mptm',
'stm',
'nst',
'm15',
'stk',
'wow',
'ult',
'669',
'mtm',
'med',
'far',
'mdl',
'ams',
'dsm',
'amf',
'okt',
'dmf',
'ptm',
'psm',
'mt2',
'dbm',
'digi',
'imf',
'j2b',
'gdm',
'umx',
'plm',
'mo3',
'xpk',
'ppm',
'mmcmp'
];
/*
https://github.com/sindresorhus/file-type/blob/main/supported.js
https://github.com/sindresorhus/file-type/blob/main/core.js

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@ -0,0 +1,266 @@
/* global libopenmpt UTF8ToString writeAsciiToMemory */
const ChiptuneAudioContext = window.AudioContext || window.webkitAudioContext;
export function ChiptuneJsConfig (repeatCount: number, context: AudioContext) {
this.repeatCount = repeatCount;
this.context = context;
}
ChiptuneJsConfig.prototype.constructor = ChiptuneJsConfig;
export function ChiptuneJsPlayer (config: object) {
this.config = config;
this.audioContext = config.context || new ChiptuneAudioContext();
this.context = this.audioContext.createGain();
this.currentPlayingNode = null;
this.handlers = [];
this.touchLocked = true;
this.volume = 1;
}
ChiptuneJsPlayer.prototype.constructor = ChiptuneJsPlayer;
ChiptuneJsPlayer.prototype.fireEvent = function (eventName: string, response) {
const handlers = this.handlers;
if (handlers.length > 0) {
for(const handler of handlers) {
if (handler.eventName === eventName) {
handler.handler(response);
}
}
}
};
ChiptuneJsPlayer.prototype.addHandler = function (eventName: string, handler: Function) {
this.handlers.push({ eventName, handler });
};
ChiptuneJsPlayer.prototype.onEnded = function (handler: Function) {
this.addHandler('onEnded', handler);
};
ChiptuneJsPlayer.prototype.onError = function (handler: Function) {
this.addHandler('onError', handler);
};
ChiptuneJsPlayer.prototype.duration = function () {
return libopenmpt._openmpt_module_get_duration_seconds(this.currentPlayingNode.modulePtr);
};
ChiptuneJsPlayer.prototype.position = function () {
return libopenmpt._openmpt_module_get_position_seconds(this.currentPlayingNode.modulePtr);
};
ChiptuneJsPlayer.prototype.seek = function (position: number) {
if (this.currentPlayingNode) {
libopenmpt._openmpt_module_set_position_seconds(this.currentPlayingNode.modulePtr, position);
}
};
ChiptuneJsPlayer.prototype.metadata = function () {
const data = {};
const keys = UTF8ToString(libopenmpt._openmpt_module_get_metadata_keys(this.currentPlayingNode.modulePtr)).split(';');
let keyNameBuffer = 0;
for (const key of keys) {
keyNameBuffer = libopenmpt._malloc(key.length + 1);
writeAsciiToMemory(key, keyNameBuffer);
data[key] = UTF8ToString(libopenmpt._openmpt_module_get_metadata(this.currentPlayingNode.modulePtr, keyNameBuffer));
libopenmpt._free(keyNameBuffer);
}
return data;
};
ChiptuneJsPlayer.prototype.unlock = function () {
const context = this.audioContext;
const buffer = context.createBuffer(1, 1, 22050);
const unlockSource = context.createBufferSource();
unlockSource.buffer = buffer;
unlockSource.connect(this.context);
this.context.connect(context.destination);
unlockSource.start(0);
this.touchLocked = false;
};
ChiptuneJsPlayer.prototype.load = function (input) {
return new Promise((resolve, reject) => {
if(this.touchLocked) {
this.unlock();
}
const player = this;
if (input instanceof File) {
const reader = new FileReader();
reader.onload = () => {
resolve(reader.result);
};
reader.readAsArrayBuffer(input);
} else {
window.fetch(input).then((response) => {
response.arrayBuffer().then((arrayBuffer) => {
resolve(arrayBuffer);
}).catch((error) => {
reject(error);
});
}).catch((error) => {
reject(error);
});
}
});
};
ChiptuneJsPlayer.prototype.play = function (buffer: ArrayBuffer) {
this.unlock();
this.stop();
const processNode = this.createLibopenmptNode(buffer, this.buffer);
if (processNode === null) {
return;
}
libopenmpt._openmpt_module_set_repeat_count(processNode.modulePtr, this.config.repeatCount || 0);
this.currentPlayingNode = processNode;
processNode.connect(this.context);
this.context.connect(this.audioContext.destination);
};
ChiptuneJsPlayer.prototype.stop = function () {
if (this.currentPlayingNode != null) {
this.currentPlayingNode.disconnect();
this.currentPlayingNode.cleanup();
this.currentPlayingNode = null;
}
};
ChiptuneJsPlayer.prototype.togglePause = function () {
if (this.currentPlayingNode != null) {
this.currentPlayingNode.togglePause();
}
};
ChiptuneJsPlayer.prototype.getPattern = function () {
if (this.currentPlayingNode && this.currentPlayingNode.modulePtr) {
return libopenmpt._openmpt_module_get_current_pattern(this.currentPlayingNode.modulePtr);
}
return 0;
};
ChiptuneJsPlayer.prototype.getRow = function () {
if (this.currentPlayingNode && this.currentPlayingNode.modulePtr) {
return libopenmpt._openmpt_module_get_current_row(this.currentPlayingNode.modulePtr);
}
return 0;
};
ChiptuneJsPlayer.prototype.getPatternNumRows = function (pattern: number) {
if (this.currentPlayingNode && this.currentPlayingNode.modulePtr) {
return libopenmpt._openmpt_module_get_pattern_num_rows(this.currentPlayingNode.modulePtr, pattern);
}
return 0;
};
ChiptuneJsPlayer.prototype.getPatternRowChannel = function (pattern: number, row: number, channel: number) {
if (this.currentPlayingNode && this.currentPlayingNode.modulePtr) {
return UTF8ToString(libopenmpt._openmpt_module_format_pattern_row_channel(this.currentPlayingNode.modulePtr, pattern, row, channel, 0, true));
}
return '';
};
ChiptuneJsPlayer.prototype.createLibopenmptNode = function (buffer, config: object) {
const maxFramesPerChunk = 4096;
const processNode = this.audioContext.createScriptProcessor(2048, 0, 2);
processNode.config = config;
processNode.player = this;
const byteArray = new Int8Array(buffer);
const ptrToFile = libopenmpt._malloc(byteArray.byteLength);
libopenmpt.HEAPU8.set(byteArray, ptrToFile);
processNode.modulePtr = libopenmpt._openmpt_module_create_from_memory(ptrToFile, byteArray.byteLength, 0, 0, 0);
processNode.nbChannels = libopenmpt._openmpt_module_get_num_channels(processNode.modulePtr);
processNode.patternIndex = -1;
processNode.paused = false;
processNode.leftBufferPtr = libopenmpt._malloc(4 * maxFramesPerChunk);
processNode.rightBufferPtr = libopenmpt._malloc(4 * maxFramesPerChunk);
processNode.cleanup = function () {
if (this.modulePtr !== 0) {
libopenmpt._openmpt_module_destroy(this.modulePtr);
this.modulePtr = 0;
}
if (this.leftBufferPtr !== 0) {
libopenmpt._free(this.leftBufferPtr);
this.leftBufferPtr = 0;
}
if (this.rightBufferPtr !== 0) {
libopenmpt._free(this.rightBufferPtr);
this.rightBufferPtr = 0;
}
};
processNode.stop = function () {
this.disconnect();
this.cleanup();
};
processNode.pause = function () {
this.paused = true;
};
processNode.unpause = function () {
this.paused = false;
};
processNode.togglePause = function () {
this.paused = !this.paused;
};
processNode.onaudioprocess = function (e) {
const outputL = e.outputBuffer.getChannelData(0);
const outputR = e.outputBuffer.getChannelData(1);
let framesToRender = outputL.length;
if (this.ModulePtr === 0) {
for (let i = 0; i < framesToRender; ++i) {
outputL[i] = 0;
outputR[i] = 0;
}
this.disconnect();
this.cleanup();
return;
}
if (this.paused) {
for (let i = 0; i < framesToRender; ++i) {
outputL[i] = 0;
outputR[i] = 0;
}
return;
}
let framesRendered = 0;
let ended = false;
let error = false;
const currentPattern = libopenmpt._openmpt_module_get_current_pattern(this.modulePtr);
const currentRow = libopenmpt._openmpt_module_get_current_row(this.modulePtr);
if (currentPattern !== this.patternIndex) {
processNode.player.fireEvent('onPatternChange');
}
processNode.player.fireEvent('onRowChange', { index: currentRow });
while (framesToRender > 0) {
const framesPerChunk = Math.min(framesToRender, maxFramesPerChunk);
const actualFramesPerChunk = libopenmpt._openmpt_module_read_float_stereo(this.modulePtr, this.context.sampleRate, framesPerChunk, this.leftBufferPtr, this.rightBufferPtr);
if (actualFramesPerChunk === 0) {
ended = true;
// modulePtr will be 0 on openmpt: error: openmpt_module_read_float_stereo: ERROR: module * not valid or other openmpt error
error = !this.modulePtr;
}
const rawAudioLeft = libopenmpt.HEAPF32.subarray(this.leftBufferPtr / 4, this.leftBufferPtr / 4 + actualFramesPerChunk);
const rawAudioRight = libopenmpt.HEAPF32.subarray(this.rightBufferPtr / 4, this.rightBufferPtr / 4 + actualFramesPerChunk);
for (let i = 0; i < actualFramesPerChunk; ++i) {
outputL[framesRendered + i] = rawAudioLeft[i];
outputR[framesRendered + i] = rawAudioRight[i];
}
for (let i = actualFramesPerChunk; i < framesPerChunk; ++i) {
outputL[framesRendered + i] = 0;
outputR[framesRendered + i] = 0;
}
framesToRender -= framesPerChunk;
framesRendered += framesPerChunk;
}
if (ended) {
this.disconnect();
this.cleanup();
error ? processNode.player.fireEvent('onError', { type: 'openmpt' }) : processNode.player.fireEvent('onEnded');
}
};
return processNode;
};