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https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Jacob Trimble
7ae6fc7d93
The 'webkitkeyneeded' and 'encrypted' events send similar data, but they were incompatible with each other and our transform handling. This makes our polyfill produce the same format as the browser for cases where the browser may only fire the old event. This also makes our utilities work with the new format. The 'webkitkeyneeded' event was a length-prefixed UTF-16 string while the 'encrypted' event was just a UTF-8 string. This also makes a breaking change in the transform callback to pass the init data type. This shouldn't break anyone that only uses the first argument; the second argument was mainly added so we could have the default transform work without knowing anything. This change could also break people who use custom transform functions. The init data format is changing, which could break people who read it directly. If they follow the tutorial and use our utilities, it shouldn't break. This also updates the tutorial to match the new format and be more clear about the format. Fixes #2214 Change-Id: I006382028e828e31e20e085114fd7fd85c0e1eaa
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FairPlay Support
When using native src= playback, we support using FairPlay on Safari.
Adding FairPlay support involves a bit more work than other key systems.
Server certificate
All FairPlay content requires setting a server certificate. This is set in the Player configuration:
const req = await fetch('https://example.com/cert.der');
const cert = await req.arrayBuffer();
player.configure('drm.advanced.com\\.apple\\.fps\\.1_0.serverCertificate',
new Uint8Array(cert));
Content ID
Some FairPlay content use custom signaling for the content ID. The content ID is used by the browser to generate the license request. If you don't use the default content ID derivation, you need to specify a custom init data transform:
player.configure('drm.initDataTransform', (initData, initDataType) => {
if (initDataType != 'skd')
return initData;
// 'initData' is a buffer containing an 'skd://' URL as a UTF-8 string.
const skdUri = shaka.util.StringUtils.fromBytesAutoDetect(initData);
const contentId = getMyContentId(sdkUri);
const cert = player.drmInfo().serverCertificate;
return shaka.util.FairPlayUtils.initDataTransform(initData, contentId, cert);
});
License wrapping
Some FairPlay servers need to accept the license request in a different format or give the response in a different format. For more info, see the general {@tutorial license-wrapping} tutorial:
player.getNetworkingEngine().registerRequestFilter((type, request) => {
if (type != shaka.net.NetworkingEngine.RequestType.LICENSE) {
return;
}
const originalPayload = new Uint8Array(request.body);
const base64Payload =
shaka.util.Uint8ArrayUtils.toStandardBase64(originalPayload);
const params = 'spc=' + base64Payload;
request.headers['Content-Type'] = 'application/x-www-form-urlencoded';
request.body = shaka.util.StringUtils.toUTF8(encodeURIComponent(params));
});
player.getNetworkingEngine().registerResponseFilter((type, response) => {
if (type != shaka.net.NetworkingEngine.RequestType.LICENSE) {
return;
}
let responseText = shaka.util.StringUtils.fromUTF8(response.data);
// Trim whitespace.
responseText = responseText.trim();
// Look for <ckc> wrapper and remove it.
if (responseText.substr(0, 5) === '<ckc>' &&
responseText.substr(-6) === '</ckc>') {
responseText = responseText.slice(5, -6);
}
// Decode the base64-encoded data into the format the browser expects.
response.data = shaka.util.Uint8ArrayUtils.fromBase64(responseText).buffer;
});