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44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
// META: global=window
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// META: script=/common/media.js
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// META: script=/webcodecs/utils.js
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var defaultInit = {
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timestamp: 1234,
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channels: 2,
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sampleRate: 8000,
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frames: 1,
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};
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function testAudioData(useView) {
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let localData =
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new SharedArrayBuffer(defaultInit.channels * defaultInit.frames * 4);
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let view = new Float32Array(localData);
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view[0] = -1.0;
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view[1] = 1.0;
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let audio_data_init = {
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timestamp: defaultInit.timestamp,
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data: useView ? view : localData,
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numberOfFrames: defaultInit.frames,
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numberOfChannels: defaultInit.channels,
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sampleRate: defaultInit.sampleRate,
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format: 'f32-planar',
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}
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let data = new AudioData(audio_data_init);
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let copyDest = new SharedArrayBuffer(data.allocationSize({planeIndex: 0}));
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let destView = new Float32Array(copyDest);
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data.copyTo(useView ? destView : copyDest, {planeIndex: 0});
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assert_equals(destView[0], -1.0, 'copyDest[0]');
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data.copyTo(useView ? destView : copyDest, {planeIndex: 1});
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assert_equals(destView[0], 1.0, 'copyDest[1]');
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}
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test(t => {
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testAudioData(/*useView=*/ false);
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}, 'Test construction and copyTo() using a SharedArrayBuffer');
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test(t => {
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testAudioData(/*useView=*/ true);
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}, 'Test construction and copyTo() using a Uint8Array(SharedArrayBuffer)');
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