LNXSDK/Kha/Backends/HTML5/kha/LoaderImpl.hx
2025-01-22 16:18:30 +01:00

237 lines
7.1 KiB
Haxe

package kha;
import js.html.FileReader;
import js.Syntax;
import js.Browser;
import js.html.ImageElement;
import js.html.XMLHttpRequest;
import haxe.io.Bytes;
import kha.Blob;
import kha.js.WebAudioSound;
import kha.js.MobileWebAudioSound;
import kha.graphics4.TextureFormat;
import kha.graphics4.Usage;
using StringTools;
class LoaderImpl {
@:allow(kha.SystemImpl)
static var dropFiles = new Map<String, js.html.File>();
public static function getImageFormats(): Array<String> {
return ["png", "jpg", "hdr"];
}
public static function loadImageFromDescription(desc: Dynamic, done: kha.Image->Void, failed: AssetError->Void) {
var readable = Reflect.hasField(desc, "readable") ? desc.readable : false;
if (StringTools.endsWith(desc.files[0], ".hdr")) {
loadBlobFromDescription(desc, function(blob) {
var hdrImage = kha.internal.HdrFormat.parse(blob.toBytes());
done(Image.fromBytes(hdrImage.data.view.buffer, hdrImage.width, hdrImage.height, TextureFormat.RGBA128,
readable ? Usage.DynamicUsage : Usage.StaticUsage));
}, failed);
}
else {
var img: ImageElement = cast Browser.document.createElement("img");
img.onerror = function(event: Dynamic) failed({url: desc.files[0], error: event});
img.onload = function(event: Dynamic) done(Image.fromImage(img, readable));
img.crossOrigin = "";
img.src = desc.files[0];
}
}
public static function getSoundFormats(): Array<String> {
var element = Browser.document.createAudioElement();
var formats = new Array<String>();
#if !kha_debug_html5
if (element.canPlayType("audio/mp4") != "")
formats.push("mp4");
if (element.canPlayType("audio/mp3") != "")
formats.push("mp3");
if (element.canPlayType("audio/wav") != "")
formats.push("wav");
#end
if (SystemImpl._hasWebAudio || element.canPlayType("audio/ogg") != "")
formats.push("ogg");
return formats;
}
public static function loadSoundFromDescription(desc: Dynamic, done: kha.Sound->Void, failed: AssetError->Void) {
if (SystemImpl._hasWebAudio) {
#if !kha_debug_html5
var element = Browser.document.createAudioElement();
if (element.canPlayType("audio/mp4") != "") {
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".mp4")) {
new WebAudioSound(file, done, failed);
return;
}
}
}
if (element.canPlayType("audio/mp3") != "") {
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".mp3")) {
new WebAudioSound(file, done, failed);
return;
}
}
}
if (element.canPlayType("audio/wav") != "") {
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".wav")) {
new WebAudioSound(file, done, failed);
return;
}
}
}
#end
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".ogg")) {
new WebAudioSound(file, done, failed);
return;
}
}
failed({
url: desc.files.join(","),
error: "Unable to find sound files with supported audio formats",
});
}
else if (SystemImpl.mobile) {
var element = Browser.document.createAudioElement();
if (element.canPlayType("audio/mp4") != "") {
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".mp4")) {
new MobileWebAudioSound(file, done, failed);
return;
}
}
}
if (element.canPlayType("audio/mp3") != "") {
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".mp3")) {
new MobileWebAudioSound(file, done, failed);
return;
}
}
}
if (element.canPlayType("audio/wav") != "") {
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".wav")) {
new MobileWebAudioSound(file, done, failed);
return;
}
}
}
for (i in 0...desc.files.length) {
var file: String = desc.files[i];
if (file.endsWith(".ogg")) {
new MobileWebAudioSound(file, done, failed);
return;
}
}
failed({
url: desc.files.join(","),
error: "Unable to find sound files with supported audio formats",
});
}
else {
new kha.js.Sound(desc.files, done, failed);
}
}
public static function getVideoFormats(): Array<String> {
#if kha_debug_html5
return ["webm"];
#else
return ["mp4", "webm"];
#end
}
public static function loadVideoFromDescription(desc: Dynamic, done: kha.Video->Void, failed: AssetError->Void): Void {
kha.js.Video.fromFile(desc.files, done);
}
public static function loadRemote(desc: Dynamic, done: Blob->Void, failed: AssetError->Void) {
var request = untyped new XMLHttpRequest();
request.open("GET", desc.files[0], true);
request.responseType = "arraybuffer";
request.onreadystatechange = function() {
if (request.readyState != 4)
return;
if ((request.status >= 200 && request.status < 400)
|| (request.status == 0 && request.statusText == "")) { // Blobs loaded using --allow-file-access-from-files
var bytes: Bytes = null;
var arrayBuffer = request.response;
if (arrayBuffer != null) {
var byteArray: Dynamic = Syntax.code("new Uint8Array(arrayBuffer)");
bytes = Bytes.ofData(byteArray);
}
else if (request.responseBody != null) {
var data: Dynamic = untyped Syntax.code("VBArray(request.responseBody).toArray()");
bytes = Bytes.alloc(data.length);
for (i in 0...data.length)
bytes.set(i, data[i]);
}
else {
failed({url: desc.files[0]});
return;
}
done(new Blob(bytes));
}
else {
failed({url: desc.files[0]});
}
}
request.send(null);
}
public static function loadBlobFromDescription(desc: Dynamic, done: Blob->Void, failed: AssetError->Void) {
#if kha_debug_html5
var file: String = desc.files[0];
if (file.startsWith("http://") || file.startsWith("https://")) {
loadRemote(desc, done, failed);
}
else if (file.startsWith("drop://")) {
var dropFile = dropFiles.get(file.substring(7));
if (dropFile == null)
failed({url: file, error: 'file not found'});
else {
var reader = new FileReader();
reader.onloadend = () -> {
done(new Blob(Bytes.ofData(reader.result)));
};
reader.onerror = () -> failed({url: file, error: reader.error});
reader.readAsArrayBuffer(dropFile);
}
}
else {
var loadBlob = Syntax.code("window.electron.loadBlob");
loadBlob(desc, (byteArray: Dynamic) -> {
var bytes = Bytes.alloc(byteArray.byteLength);
for (i in 0...byteArray.byteLength)
bytes.set(i, byteArray[i]);
done(new Blob(bytes));
}, failed);
}
#else
loadRemote(desc, done, failed);
#end
}
public static function loadFontFromDescription(desc: Dynamic, done: Font->Void, failed: AssetError->Void): Void {
loadBlobFromDescription(desc, function(blob: Blob) {
done(new Font(blob));
}, failed);
}
}