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content / test / data / gpu / webcodecs / svc.html [blame]
<!DOCTYPE html>
<!--
Check hardware accelerated scalable video coding and decoding after dropping
some chunks.
-->
<html>
<head>
<title>SVC encoding test</title>
<script src="webcodecs_common.js"></script>
<script type="text/javascript">
'use strict';
async function main(arg) {
const width = 640;
const height = 480;
const frames_to_encode = 32;
let frames_encoded = 0;
let frames_decoded = 0;
let errors = 0;
const base_layer_decimator = ([null, null, 2, 4])[arg.layers];
let expected_dot_count = [];
const encoder_config = {
codec: arg.codec,
hardwareAcceleration: arg.acceleration,
width: width,
height: height,
bitrate: 2000000,
scalabilityMode: "L1T" + arg.layers,
latencyMode: "realtime",
};
TEST.log('Starting test with arguments: ' + JSON.stringify(arg));
let supported = false;
try {
supported = (await VideoEncoder.isConfigSupported(encoder_config)).supported;
} catch (e) {}
if (!supported) {
TEST.skip('Unsupported codec: ' + arg.codec);
return;
}
let decoder = new VideoDecoder({
output(frame) {
frames_decoded++;
let dots = expected_dot_count.shift();
// Check that we have intended number of dots and no more.
// Completely black frame shouldn't pass the test.
if(!validateBlackDots(frame, dots) ||
validateBlackDots(frame, dots + 1)) {
TEST.reportFailure(
`Unexpected dot count ts:${frame.timestamp} dots:${dots}`);
}
frame.close();
},
error(e) {
errors++;
TEST.log(e);
}
});
const encoder_init = {
output(chunk, metadata) {
let config = metadata.decoderConfig;
if (config) {
decoder.configure(config);
}
frames_encoded++;
TEST.assert(metadata.svc != null);
TEST.assert(metadata.svc.temporalLayerId < arg.layers,
"too large temporal ID");
if (metadata.svc.temporalLayerId == 0) {
decoder.decode(chunk);
}
},
error(e) {
errors++;
TEST.log(e);
}
};
let encoder = new VideoEncoder(encoder_init);
encoder.configure(encoder_config);
let source = new CanvasSource(width, height);
for (let i = 0; i < frames_to_encode; i++) {
let frame = await source.getNextFrame();
encoder.encode(frame, { keyFrame: false });
if (i % base_layer_decimator == 0)
expected_dot_count.push(i);
frame.close();
await waitForNextFrame();
}
await encoder.flush();
await decoder.flush();
encoder.close();
decoder.close();
source.close();
TEST.assert(
frames_encoded == frames_to_encode,
'frames_encoded mismatch: ' + frames_encoded);
let base_layer_frames = frames_encoded / base_layer_decimator;
TEST.assert(
frames_decoded == base_layer_frames,
'frames_decoded mismatch: ' + frames_decoded);
TEST.assert(
errors == 0, 'Decoding or encoding errors occurred during the test');
TEST.log('Test completed');
}
addManualTestButton([{
'codec': 'avc1.42001E',
'acceleration': 'prefer-software',
'layers': 2
},
{
'codec': 'avc1.42001E',
'acceleration': 'prefer-hardware',
'layers': 2
},
{
'codec': 'hvc1.1.6.L123.00',
'acceleration': 'prefer-software',
'layers': 2
},
{
'codec': 'hvc1.1.6.L123.00',
'acceleration': 'prefer-hardware',
'layers': 2
},
{
'codec': 'av01.0.04M.08',
'acceleration': 'prefer-software',
'layers': 2
}]);
</script>
</head>
<body>
</body>
</html>