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<!DOCTYPE HTML>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<canvas id="canvas">
</canvas>
<script>
function createAudioTrack() {
ac = new AudioContext();
var osc = ac.createOscillator();
var dest = ac.createMediaStreamDestination();
osc.connect(dest);
audio_track = dest.stream.getAudioTracks()[0];
assert_equals(audio_track.kind, "audio");
return audio_track;
}
function createVideoTrack() {
canvas = document.getElementById("canvas");
video_track = canvas.captureStream().getVideoTracks()[0];
assert_equals(video_track.kind, "video");
return video_track;
}
test(t => {
audio_track = createAudioTrack();
assert_equals("", audio_track.contentHint);
video_track = createVideoTrack();
assert_equals("", video_track.contentHint);
}, "Tracks have empty default content hint");
test(t => {
audio_track = createAudioTrack();
audio_track.contentHint = "speech";
assert_equals(audio_track.contentHint, "speech");
audio_track.contentHint = "music";
assert_equals(audio_track.contentHint, "music");
audio_track.contentHint = "";
assert_equals(audio_track.contentHint, "");
}, "Accepts valid audio contentHints");
test(t => {
audio_track = createAudioTrack();
audio_track.contentHint = "speech";
assert_equals(audio_track.contentHint, "speech");
audio_track.contentHint = "motion";
assert_equals(audio_track.contentHint, "speech",
"Audio tracks should ignore video-only contentHints.");
audio_track.contentHint = "bogus";
assert_equals(audio_track.contentHint, "speech",
"Audio tracks should ignore garbage contentHints");
}, "Audio tracks ignore invalid/video contentHints");
test(t => {
video_track = createVideoTrack();
video_track.contentHint = "motion";
assert_equals(video_track.contentHint, "motion");
video_track.contentHint = "detail";
assert_equals(video_track.contentHint, "detail");
video_track.contentHint = "text";
assert_equals(video_track.contentHint, "text");
video_track.contentHint = "";
assert_equals(video_track.contentHint, "");
}, "Accepts valid video contentHints");
test(t => {
video_track = createVideoTrack();
video_track.contentHint = "motion";
assert_equals(video_track.contentHint, "motion");
video_track.contentHint = "speech";
assert_equals(video_track.contentHint, "motion",
"Video tracks should ignore audio-only contentHints.");
video_track.contentHint = "bogus";
assert_equals(video_track.contentHint, "motion",
"Video tracks should ignore garbage contentHints");
}, "Video tracks ignore invalid/audio contentHints");
test(t => {
video_track = createVideoTrack();
video_track.contentHint = "motion";
assert_equals(video_track.contentHint, "motion");
// Cloning a track should preserve contentHint.
video_track_clone = video_track.clone();
assert_equals(video_track_clone.contentHint, "motion");
// Changing a cloned track's contentHint should not change the original.
video_track_clone.contentHint = "detail";
assert_equals(video_track_clone.contentHint, "detail");
assert_equals(video_track.contentHint, "motion");
}, "Cloned video tracks have separate contentHints");
test(t => {
audio_track = createAudioTrack();
audio_track.contentHint = "speech";
assert_equals(audio_track.contentHint, "speech");
// Cloning a track should preserve contentHint.
audio_track_clone = audio_track.clone();
assert_equals(audio_track_clone.contentHint, "speech");
// Changing a cloned track's contentHint should not change the original.
audio_track_clone.contentHint = "music";
assert_equals(audio_track_clone.contentHint, "music");
assert_equals(audio_track.contentHint, "speech");
}, "Cloned audio tracks have separate contentHints");
</script>
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