Doesn't the current XHR2 spec address this use case?
Browsers don't seem to implement it yet, but shouldn't something like
this work for the original poster?
x = new XMLHttpRequest()
x.open("GET", "http://my-media-file";);
x.responseType = "blob";
x.send();
var nbytes = 0;
x.onprogress = function(e) {
var blob = x.response.slice(nbytes, e.loaded-nbytes);
nbytes += blob.size;
var reader = new FileReader();
reader.readAsArrayBuffer(blob, function() {
// process blob content here
});
}
David Flanagan
On 01/21/2011 02:02 AM, Jeremy Orlow wrote:
Would something like this tie in to the<device> work that's being done
maybe?
---------- Forwarded message ----------
From: Adam Malcontenti-Wilson<[email protected]>
Date: Fri, Jan 21, 2011 at 6:21 AM
Subject: [chromium-html5] File API Streaming Blobs
To: Chromium HTML5<[email protected]>
Hi.
I'm trying to make an application which will download media files from
a server and cache them locally, as well as playing them back but I'm
trying to figure out how I could do so without making the user wait
for the entire file to be downloaded, converted to a blob, then
saved.
For example, suppose that I create a new BlobBuilder, append "hello",
get the Blob, and then create an object url from that blob, and then
open the object url. Any other text that I append to the BlobBuilder
would not go into the old blob that I created a url for, and hence not
shown making "streaming" impossible.
Is there any other methods in the spec(s) to implement such
streaming?
If not, perhaps there needs to be yet another object to have a way of
creating a "StreamingBlob" that doesn't "close" the virtual connection
to the browser until a close method is called, thereby facilitating
streaming.
Thanks,
