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Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-start.html')
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diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-start.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-start.html new file mode 100644 index 0000000000..19331954b0 --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-start.html @@ -0,0 +1,174 @@ +<!DOCTYPE html> +<html> + <head> + <title> + audiobuffersource-start.html + </title> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + <script src="/webaudio/resources/audit-util.js"></script> + <script src="/webaudio/resources/audit.js"></script> + <script src="/webaudio/resources/audiobuffersource-testing.js"></script> + </head> + <body> + <script id="layout-test-code"> + let audit = Audit.createTaskRunner(); + + // The following test cases assume an AudioBuffer of length 8 whose PCM + // data is a linear ramp, 0, 1, 2, 3,... + + let tests = [ + + { + description: + 'start(when): implicitly play whole buffer from beginning to end', + offsetFrame: 'none', + durationFrames: 'none', + renderFrames: 16, + playbackRate: 1, + expected: [0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + { + description: + 'start(when, 0): play whole buffer from beginning to end explicitly giving offset of 0', + offsetFrame: 0, + durationFrames: 'none', + renderFrames: 16, + playbackRate: 1, + expected: [0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + { + description: + 'start(when, 0, 8_frames): play whole buffer from beginning to end explicitly giving offset of 0 and duration of 8 frames', + offsetFrame: 0, + durationFrames: 8, + renderFrames: 16, + playbackRate: 1, + expected: [0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + { + description: + 'start(when, 4_frames): play with explicit non-zero offset', + offsetFrame: 4, + durationFrames: 'none', + renderFrames: 16, + playbackRate: 1, + expected: [4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + { + description: + 'start(when, 4_frames, 4_frames): play with explicit non-zero offset and duration', + offsetFrame: 4, + durationFrames: 4, + renderFrames: 16, + playbackRate: 1, + expected: [4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + { + description: + 'start(when, 7_frames): play with explicit non-zero offset near end of buffer', + offsetFrame: 7, + durationFrames: 1, + renderFrames: 16, + playbackRate: 1, + expected: [7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + { + description: + 'start(when, 8_frames): play with explicit offset at end of buffer', + offsetFrame: 8, + durationFrames: 0, + renderFrames: 16, + playbackRate: 1, + expected: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + { + description: + 'start(when, 9_frames): play with explicit offset past end of buffer', + offsetFrame: 8, + durationFrames: 0, + renderFrames: 16, + playbackRate: 1, + expected: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + // When the duration exceeds the buffer, just play to the end of the + // buffer. (This is different from the case when we're looping, which is + // tested in loop-comprehensive.) + { + description: + 'start(when, 0, 15_frames): play with whole buffer, with long duration (clipped)', + offsetFrame: 0, + durationFrames: 15, + renderFrames: 16, + playbackRate: 1, + expected: [0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0] + }, + + // Enable test when AudioBufferSourceNode hack is fixed: + // https://bugs.webkit.org/show_bug.cgi?id=77224 { description: + // "start(when, 3_frames, 3_frames): play a middle section with explicit + // offset and duration", + // offsetFrame: 3, durationFrames: 3, renderFrames: 16, playbackRate: + // 1, expected: [4,5,6,7,0,0,0,0,0,0,0,0,0,0,0,0] }, + + ]; + + let sampleRate = 44100; + let buffer; + let bufferFrameLength = 8; + let testSpacingFrames = 32; + let testSpacingSeconds = testSpacingFrames / sampleRate; + let totalRenderLengthFrames = tests.length * testSpacingFrames; + + function runLoopTest(context, testNumber, test) { + let source = context.createBufferSource(); + + source.buffer = buffer; + source.playbackRate.value = test.playbackRate; + + source.connect(context.destination); + + // Render each test one after the other, spaced apart by + // testSpacingSeconds. + let startTime = testNumber * testSpacingSeconds; + + if (test.offsetFrame == 'none' && test.durationFrames == 'none') { + source.start(startTime); + } else if (test.durationFrames == 'none') { + let offset = test.offsetFrame / context.sampleRate; + source.start(startTime, offset); + } else { + let offset = test.offsetFrame / context.sampleRate; + let duration = test.durationFrames / context.sampleRate; + source.start(startTime, offset, duration); + } + } + + audit.define( + 'Tests AudioBufferSourceNode start()', function(task, should) { + // Create offline audio context. + let context = + new OfflineAudioContext(1, totalRenderLengthFrames, sampleRate); + buffer = createTestBuffer(context, bufferFrameLength); + + for (let i = 0; i < tests.length; ++i) + runLoopTest(context, i, tests[i]); + + context.startRendering().then(function(audioBuffer) { + checkAllTests(audioBuffer, should); + task.done(); + }); + }); + + audit.run(); + </script> + </body> +</html> |