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Use ZipFS for web player asset bundle (#15924)

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* wip

* fix mount path

* Fix path for zip bundle

* fix case where idbfs sets up correctly and filesystem initializes too early

* Use partfiles to keep each zip small

* use bufferview slices instead of resize to support firefox
This commit is contained in:
Joe Osborn 2023-11-17 11:25:45 -08:00 committed by GitHub
parent 358c6946fe
commit 0f4166a59f
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 35 additions and 9 deletions
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2
pkg/emscripten/libretro/index.html
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@ -109,7 +109,7 @@
<a class="dropdown-item" href="." data-core="vice_xscpu64">VICE xscpu4</a>
<a class="dropdown-item" href="." data-core="vice_xvic">VICE xVIC</a>
<a class="dropdown-item" href="." data-core="vitaquake2">Vita Quake2</a>
<a class="dropdown-item" href="." data-core="vitaquake2-roque">Vita Quake2 (rogue)</a>
<a class="dropdown-item" href="." data-core="vitaquake2-rogue">Vita Quake2 (rogue)</a>
<a class="dropdown-item" href="." data-core="vitaquake2-xatrix">Vita Quake2 (xatrix)</a>
<a class="dropdown-item" href="." data-core="vitaquake2-zaero">Vita Quake2 (zaero)</a>
<a class="dropdown-item" href="." data-core="virtualjaguar">Virtual Jaguar</a>

42
pkg/emscripten/libretro/libretro.js
View File

@ -125,7 +125,6 @@ function idbfsInit()
//fallback to imfs
afs = new BrowserFS.FileSystem.InMemory();
console.log("WEBPLAYER: error: " + e + " falling back to in-memory filesystem");
setupFileSystem("browser");
appInitialized();
}
else
@ -137,7 +136,6 @@ function idbfsInit()
{
afs = new BrowserFS.FileSystem.InMemory();
console.log("WEBPLAYER: error: " + e + " falling back to in-memory filesystem");
setupFileSystem("browser");
appInitialized();
}
else
@ -157,17 +155,17 @@ function idbfsSyncComplete()
$('#icnLocal').addClass('fa-check');
console.log("WEBPLAYER: idbfs setup successful");
setupFileSystem("browser");
appInitialized();
}
function appInitialized()
{
/* Need to wait for both the file system and the wasm runtime
/* Need to wait for the file system, the wasm runtime, and the zip download
to complete before enabling the Run button. */
initializationCount++;
if (initializationCount == 2)
if (initializationCount == 3)
{
setupFileSystem("browser");
preLoadingComplete();
}
}
@ -183,6 +181,34 @@ function preLoadingComplete()
$('#btnRun').removeClass('disabled');
}
var zipTOC;
function zipfsInit() {
// 256 MB max bundle size
let buffer = new ArrayBuffer(256*1024*1024);
let bufferView = new Uint8Array(buffer);
let idx = 0;
// bundle should be in four parts (this can be changed later)
Promise.all([fetch("assets/frontend/bundle.zip.aa"),
fetch("assets/frontend/bundle.zip.ab"),
fetch("assets/frontend/bundle.zip.ac"),
fetch("assets/frontend/bundle.zip.ad")
]).then(function(resps) {
Promise.all(resps.map((r) => r.arrayBuffer())).then(function(buffers) {
for (let buf of buffers) {
if (idx+buf.byteLength > buffer.maxByteLength) {
console.log("WEBPLAYER: error: bundle.zip is too large");
}
bufferView.set(new Uint8Array(buf), idx, buf.byteLength);
idx += buf.byteLength;
}
BrowserFS.FileSystem.ZipFS.computeIndex(BrowserFS.BFSRequire('buffer').Buffer(new Uint8Array(buffer, 0, idx)), function(toc) {
zipTOC = toc;
appInitialized();
});
})
});
}
function setupFileSystem(backend)
{
/* create a mountable filesystem that will server as a root
@ -190,8 +216,7 @@ function setupFileSystem(backend)
var mfs = new BrowserFS.FileSystem.MountableFileSystem();
/* create an XmlHttpRequest filesystem for the bundled data */
var xfs1 = new BrowserFS.FileSystem.XmlHttpRequest
(".index-xhr", "assets/frontend/bundle/");
var xfs1 = new BrowserFS.FileSystem.ZipFS(zipTOC);
/* create an XmlHttpRequest filesystem for core assets */
var xfs2 = new BrowserFS.FileSystem.XmlHttpRequest
(".index-xhr", "assets/cores/");
@ -199,7 +224,7 @@ function setupFileSystem(backend)
console.log("WEBPLAYER: initializing filesystem: " + backend);
mfs.mount('/home/web_user/retroarch/userdata', afs);
mfs.mount('/home/web_user/retroarch/bundle', xfs1);
mfs.mount('/home/web_user/retroarch/', xfs1);
mfs.mount('/home/web_user/retroarch/userdata/content/downloads', xfs2);
BrowserFS.initialize(mfs);
var BFS = new BrowserFS.EmscriptenFS(Module.FS, Module.PATH, Module.ERRNO_CODES);
@ -363,6 +388,7 @@ function loadCore(core) {
$('#lblDrop').removeClass('active');
$('#lblLocal').addClass('active');
idbfsInit();
zipfsInit();
}).catch(err => { console.error("Couldn't instantiate module",err); throw err; });
}).catch(err => { console.error("Couldn't load script",err); throw err; });
}