third_party/web_platform_tests/media-source/mediasource-buffered.html

<!DOCTYPE html>
<html>
    <head>
        <title>SourceBuffer.buffered test cases.</title>
        <script src="/resources/testharness.js"></script>
        <script src="/resources/testharnessreport.js"></script>
        <script src="mediasource-util.js"></script>
    </head>
    <body>
        <div id="log"></div>
        <script>
            var subType = MediaSourceUtil.getSubType(MediaSourceUtil.AUDIO_ONLY_TYPE);

            var manifestFilenameA = subType + "/test-a-128k-44100Hz-1ch-manifest.json";
            var manifestFilenameB = subType + "/test-v-128k-320x240-30fps-10kfr-manifest.json";

            var expectationsA = {
              webm: "{ [0.000, 2.023) }",
              mp4: "{ [0.000, 2.043) }",
            };

            var expectationsB = {
              webm: "{ [0.000, 2.001) }",
              mp4: "{ [0.000, 2.000) }",
            };

            function mediaSourceDemuxedTest(callback, description)
            {
                mediasource_test(function(test, mediaElement, mediaSource)
                {
                    mediaElement.pause();
                    mediaElement.addEventListener("error", test.unreached_func("Unexpected event 'error'"));
                    mediaElement.addEventListener("ended", test.step_func_done());

                    MediaSourceUtil.fetchManifestAndData(test, manifestFilenameA, function(typeA, dataA)
                    {
                        MediaSourceUtil.fetchManifestAndData(test, manifestFilenameB, function(typeB, dataB)
                        {
                            mediaSource.addSourceBuffer(typeA);
                            mediaSource.addSourceBuffer(typeB);
                            assert_equals(mediaSource.sourceBuffers.length, 2);

                            callback(test, mediaElement, mediaSource, dataA, dataB);
                        });
                    });
                }, description);
            };

            function appendData(test, mediaSource, dataA, dataB, callback)
            {
                var sourceBufferA = mediaSource.sourceBuffers[0];
                var sourceBufferB = mediaSource.sourceBuffers[1];

                test.expectEvent(sourceBufferA, "update");
                test.expectEvent(sourceBufferA, "updateend");
                sourceBufferA.appendBuffer(dataA);

                test.expectEvent(sourceBufferB, "update");
                test.expectEvent(sourceBufferB, "updateend");
                sourceBufferB.appendBuffer(dataB);

                test.waitForExpectedEvents(function()
                {
                     callback();
                });
            }

            mediaSourceDemuxedTest(function(test, mediaElement, mediaSource, dataA, dataB) {
                test.expectEvent(mediaElement, "loadedmetadata");
                appendData(test, mediaSource, dataA, dataB, function()
                {
                    assertBufferedEquals(mediaSource.activeSourceBuffers[0], expectationsA[subType], "mediaSource.activeSourceBuffers[0]");
                    assertBufferedEquals(mediaSource.activeSourceBuffers[1], expectationsB[subType], "mediaSource.activeSourceBuffers[1]");
                    assertBufferedEquals(mediaElement, expectationsB[subType], "mediaElement.buffered");

                    mediaSource.endOfStream();

                    assertBufferedEquals(mediaSource.activeSourceBuffers[0], expectationsA[subType], "mediaSource.activeSourceBuffers[0]");
                    assertBufferedEquals(mediaSource.activeSourceBuffers[1], expectationsB[subType], "mediaSource.activeSourceBuffers[1]");
                    assertBufferedEquals(mediaElement, expectationsA[subType], "mediaElement.buffered");

                    test.done();
                });
            }, "Demuxed content with different lengths");

            mediasource_test(function(test, mediaElement, mediaSource)
            {
                mediaElement.pause();
                mediaElement.addEventListener("error", test.unreached_func("Unexpected event 'error'"));
                mediaElement.addEventListener("ended", test.step_func_done());

                MediaSourceUtil.fetchManifestAndData(test, subType + "/test-av-384k-44100Hz-1ch-320x240-30fps-10kfr-manifest.json", function(type, data)
                {
                    var sourceBuffer = mediaSource.addSourceBuffer(type);
                    test.expectEvent(sourceBuffer, "update");
                    test.expectEvent(sourceBuffer, "updateend");
                    sourceBuffer.appendBuffer(data);

                    test.waitForExpectedEvents(function()
                    {
                        var expectationsAV = {
                            webm: ["{ [0.000, 2.003) }", "{ [0.000, 2.023) }"],
                            mp4: ["{ [0.000, 2.000) }", "{ [0.000, 2.043) }"],
                        };

                        var expectedBeforeEndOfStream = expectationsAV[subType][0];
                        var expectedAfterEndOfStream = expectationsAV[subType][1];

                        assertBufferedEquals(mediaSource.activeSourceBuffers[0], expectedBeforeEndOfStream, "mediaSource.activeSourceBuffers[0]");
                        assertBufferedEquals(mediaElement, expectedBeforeEndOfStream, "mediaElement.buffered");

                        mediaSource.endOfStream();

                        assertBufferedEquals(mediaSource.activeSourceBuffers[0], expectedAfterEndOfStream, "mediaSource.activeSourceBuffers[0]");
                        assertBufferedEquals(mediaElement, expectedAfterEndOfStream, "mediaElement.buffered");

                        test.done();
                    });
                });
            }, "Muxed content with different lengths");

            mediaSourceDemuxedTest(function(test, mediaElement, mediaSource, dataA, dataB) {
                var dataBSize = {
                    webm: 318,
                    mp4: 835,
                };
                test.expectEvent(mediaElement, "loadedmetadata");
                appendData(test, mediaSource, dataA, dataB.subarray(0, dataBSize[subType]), function()
                {
                    assertBufferedEquals(mediaSource.activeSourceBuffers[0], expectationsA[subType], "mediaSource.activeSourceBuffers[0]");
                    assertBufferedEquals(mediaSource.activeSourceBuffers[1], "{ }", "mediaSource.activeSourceBuffers[1]");
                    assertBufferedEquals(mediaElement, "{ }", "mediaElement.buffered");

                    mediaSource.endOfStream();

                    assertBufferedEquals(mediaSource.activeSourceBuffers[0], expectationsA[subType], "mediaSource.activeSourceBuffers[0]");
                    assertBufferedEquals(mediaSource.activeSourceBuffers[1], "{ }", "mediaSource.activeSourceBuffers[1]");
                    assertBufferedEquals(mediaElement, "{ }", "mediaElement.buffered");

                    test.done();
                });
            }, "Demuxed content with an empty buffered range on one SourceBuffer");

            mediasource_test(function(test, mediaElement, mediaSource)
            {
                mediaElement.pause();
                mediaElement.addEventListener("error", test.unreached_func("Unexpected event 'error'"));
                mediaElement.addEventListener("ended", test.step_func_done());

                MediaSourceUtil.fetchManifestAndData(test, subType + "/test-av-384k-44100Hz-1ch-320x240-30fps-10kfr-manifest.json", function(type, data)
                {
                    var sourceBuffer = mediaSource.addSourceBuffer(type);
                    test.expectEvent(mediaElement, "loadedmetadata");
                    test.expectEvent(sourceBuffer, "update");
                    test.expectEvent(sourceBuffer, "updateend");
                    sourceBuffer.appendBuffer(data.subarray(0, 4052));

                    test.waitForExpectedEvents(function()
                    {
                        assertBufferedEquals(mediaSource.activeSourceBuffers[0], "{ }", "mediaSource.activeSourceBuffers[0]");
                        assertBufferedEquals(mediaElement, "{ }", "mediaElement.buffered");

                        mediaSource.endOfStream();

                        assertBufferedEquals(mediaSource.activeSourceBuffers[0], "{ }", "mediaSource.activeSourceBuffers[0]");
                        assertBufferedEquals(mediaElement, "{ }", "mediaElement.buffered");

                        test.done();
                    });
                });
            }, "Muxed content empty buffered ranges.");

            mediasource_test(function(test, mediaElement, mediaSource)
            {
                mediaElement.pause();
                mediaElement.addEventListener("error", test.unreached_func("Unexpected event 'error'"));
                mediaElement.addEventListener("ended", test.step_func_done());

                var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_ONLY_TYPE);

                assertBufferedEquals(mediaSource.sourceBuffers[0], "{ }", "mediaSource.sourceBuffers[0]");
                assertBufferedEquals(mediaElement, "{ }", "mediaElement.buffered");
                test.done();

            }, "Get buffered range when sourcebuffer is empty.");

            mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
            {
                var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);

                test.expectEvent(mediaElement, "loadedmetadata");
                test.expectEvent(sourceBuffer, "updateend", "initSegment append ended.");
                sourceBuffer.appendBuffer(initSegment);
                test.waitForExpectedEvents(function()
                {
                    assertBufferedEquals(mediaSource.sourceBuffers[0], "{ }", "mediaSource.sourceBuffers[0]");
                    assertBufferedEquals(mediaSource.activeSourceBuffers[0], "{ }", "mediaSource.activeSourceBuffers[0]");
                    assertBufferedEquals(mediaElement, "{ }", "mediaElement.buffered");
                    test.done();
                });

            }, "Get buffered range when only init segment is appended.");

            mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
            {
                test.expectEvent(mediaSource.sourceBuffers, "removesourcebuffer", "SourceBuffer removed.");
                mediaSource.removeSourceBuffer(sourceBuffer);

                test.waitForExpectedEvents(function()
                {
                    assert_throws("InvalidStateError",
                        function() { sourceBuffer.buffered; },
                        "get sourceBuffer.buffered throws an exception for InvalidStateError.");
                    test.done();
                });
            }, "Get buffered range after removing sourcebuffer.");
        </script>
    </body>
</html>