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// META: global=window,dedicatedworker
// META: script=/webcodecs/video-encoder-utils.js
// META: variant=?av1
// META: variant=?vp9_p0
// META: variant=?vp9_p2
function get_config() {
const config = {
'?av1': {codec: 'av01.0.04M.08'},
'?vp8': {codec: 'vp8'},
'?vp9_p0': {codec: 'vp09.00.10.08'},
'?vp9_p2': {codec: 'vp09.02.10.10'},
'?h264': {codec: 'avc1.42001E', avc: {format: 'annexb'}}
}[location.search];
config.width = 320;
config.height = 200;
config.bitrate = 1000000;
config.bitrateMode = 'quantizer';
config.framerate = 30;
return config;
}
function get_qp_range() {
switch (location.search) {
case '?av1':
return {min: 1, max: 63};
case '?vp9_p0':
return {min: 1, max: 63};
case '?vp9_p2':
return {min: 1, max: 63};
case '?h264':
return {min: 1, max: 51};
}
return null;
}
function set_qp(options, value) {
switch (location.search) {
case '?av1':
options.av1 = {quantizer: value};
return;
case '?vp9_p0':
options.vp9 = {quantizer: value};
return;
case '?vp9_p2':
options.vp9 = {quantizer: value};
return;
case '?h264':
options.avc = {quantizer: value};
return;
}
}
async function per_frame_qp_test(t, encoder_config, qp_range, validate_result) {
const w = encoder_config.width;
const h = encoder_config.height;
await checkEncoderSupport(t, encoder_config);
const frames_to_encode = 12;
let frames_decoded = 0;
let frames_encoded = 0;
let chunks = [];
let corrupted_frames = [];
const encoder_init = {
output(chunk, metadata) {
frames_encoded++;
chunks.push(chunk);
},
error(e) {
assert_unreached(e.message);
}
};
let encoder = new VideoEncoder(encoder_init);
encoder.configure(encoder_config);
let qp = qp_range.min;
for (let i = 0; i < frames_to_encode; i++) {
let frame = createDottedFrame(w, h, i);
let encode_options = {keyFrame: false};
set_qp(encode_options, qp);
encoder.encode(frame, encode_options);
frame.close();
qp += 3;
if (qp > qp_range.max) {
qp = qp_range.min
}
}
await encoder.flush();
let decoder = new VideoDecoder({
output(frame) {
frames_decoded++;
// Check that we have intended number of dots and no more.
// Completely black frame shouldn't pass the test.
if (validate_result && !validateBlackDots(frame, frame.timestamp) ||
validateBlackDots(frame, frame.timestamp + 1)) {
corrupted_frames.push(frame.timestamp)
}
frame.close();
},
error(e) {
assert_unreached(e.message);
}
});
let decoder_config = {
codec: encoder_config.codec,
codedWidth: w,
codedHeight: h,
};
decoder.configure(decoder_config);
for (let chunk of chunks) {
decoder.decode(chunk);
}
await decoder.flush();
encoder.close();
decoder.close();
assert_equals(frames_encoded, frames_to_encode);
assert_equals(chunks.length, frames_to_encode);
assert_equals(frames_decoded, frames_to_encode);
assert_equals(
corrupted_frames.length, 0, `corrupted_frames: ${corrupted_frames}`);
}
promise_test(async t => {
let config = get_config();
let range = get_qp_range();
return per_frame_qp_test(t, config, range, false);
}, 'Frame QP encoding, full range');
promise_test(async t => {
let config = get_config();
return per_frame_qp_test(t, config, {min: 1, max: 20}, true);
}, 'Frame QP encoding, good range with validation');
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