mediasource-sourcebuffer-mode.html

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<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->

<html>

    <head>

        <meta charset="utf-8">

        <title>SourceBuffer.mode 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>

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)

              assert_equals(sourceBuffer.mode, 'segments', 'default append mode should be \'segments\'');

              test.done();

          }, 'Test initial value of SourceBuffer.mode is "segments"');

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)

              sourceBuffer.mode = 'sequence';

              assert_equals(sourceBuffer.mode, 'sequence', 'mode after setting it to \'sequence\'');

              // Setting a mode that is not in AppendMode IDL enum should be ignored and not cause exception.

              sourceBuffer.mode = 'invalidmode';

              sourceBuffer.mode = null;

              sourceBuffer.mode = '';

              sourceBuffer.mode = 'Segments';

              assert_equals(sourceBuffer.mode, 'sequence', 'mode unchanged by attempts to set invalid modes');

              sourceBuffer.mode = 'segments';

              assert_equals(sourceBuffer.mode, 'segments', 'mode after setting it to \'segments\'');

              test.done();

          }, 'Test setting SourceBuffer.mode');

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)

              mediaSource.removeSourceBuffer(sourceBuffer);

              assert_throws_dom('InvalidStateError',

                  function() { sourceBuffer.mode = 'segments'; },

                  'Setting valid sourceBuffer.mode on removed SourceBuffer should throw InvalidStateError.');

              test.done();

          }, 'Test setting a removed SourceBuffer\'s mode');

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)

              sourceBuffer.appendBuffer(mediaData);

              assert_true(sourceBuffer.updating, 'updating attribute is true');

              assert_throws_dom('InvalidStateError',

                  function() { sourceBuffer.mode = 'segments'; },

                  'Setting valid sourceBuffer.mode on updating SourceBuffer threw InvalidStateError.');

              test.done();

          }, 'Test setting SourceBuffer.mode while still updating');

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)

              test.expectEvent(sourceBuffer, 'updateend', 'Append ended.');

              sourceBuffer.appendBuffer(mediaData);

              test.waitForExpectedEvents(function()

                  assert_false(sourceBuffer.updating, 'updating attribute is false');

                  test.expectEvent(mediaSource, 'sourceended', 'MediaSource sourceended event');

                  mediaSource.endOfStream();

                  assert_equals(mediaSource.readyState, 'ended', 'MediaSource readyState is \'ended\'');

});

              test.waitForExpectedEvents(function()

                  assert_equals(mediaSource.readyState, 'ended', 'MediaSource readyState is \'ended\'');

                  test.expectEvent(mediaSource, 'sourceopen', 'MediaSource sourceopen event');

                  sourceBuffer.mode = 'segments';

                  assert_equals(mediaSource.readyState, 'open', 'MediaSource readyState is \'open\'');

});

              test.waitForExpectedEvents(function()

                  assert_equals(mediaSource.readyState, 'open', 'MediaSource readyState is \'open\'');

                  test.done();

});

          }, 'Test setting SourceBuffer.mode triggers parent MediaSource \'ended\' to \'open\' transition.');

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)

              var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);

              var fullMediaSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.media[0]);

              var truncateAt = Math.floor(segmentInfo.media[0].size * 0.5);  // Pick first 50% of segment bytes.

              var partialMediaSegment = fullMediaSegment.subarray(0, truncateAt);

              var mediaSegmentRemainder = fullMediaSegment.subarray(truncateAt);

              // Append init segment.

              test.expectEvent(sourceBuffer, 'updateend', 'Init segment append ended.');

              sourceBuffer.appendBuffer(initSegment);

              test.waitForExpectedEvents(function()

                  assert_false(sourceBuffer.updating, 'updating attribute is false');

                  assert_equals(sourceBuffer.mode, 'segments');

                  sourceBuffer.mode = 'segments';  // No exception should occur.

                  assert_equals(sourceBuffer.timestampOffset, 0.0);

                  sourceBuffer.timestampOffset = 10.123456789;  // No exception should occur.

                  assert_equals(sourceBuffer.timestampOffset, 10.123456789);  // Super-precise offsets should round-trip.

                  // Append first part of media segment.

                  test.expectEvent(sourceBuffer, 'updateend', 'Partial media segment append ended.');

                  sourceBuffer.appendBuffer(partialMediaSegment);

});

              test.waitForExpectedEvents(function()

                  assert_false(sourceBuffer.updating, 'updating attribute is false');

                  assert_equals(sourceBuffer.mode, 'segments');

                  assert_throws_dom('InvalidStateError',

                      function() { sourceBuffer.mode = 'segments'; },

                      'Setting valid sourceBuffer.mode while still parsing media segment threw InvalidStateError.');

                  assert_equals(sourceBuffer.timestampOffset, 10.123456789);

                  assert_throws_dom('InvalidStateError',

                      function() { sourceBuffer.timestampOffset = 20.0; },

                      'Setting valid sourceBuffer.timestampOffset while still parsing media segment threw InvalidStateError.');

                  // Append remainder of media segment.

                  test.expectEvent(sourceBuffer, 'updateend', 'Append ended of remainder of media segment.');

                  sourceBuffer.appendBuffer(mediaSegmentRemainder);

});

              test.waitForExpectedEvents(function()

                  assert_false(sourceBuffer.updating, 'updating attribute is false');

                  assert_equals(sourceBuffer.mode, 'segments');

                  sourceBuffer.mode = 'segments';  // No exception should occur.

                  assert_equals(sourceBuffer.timestampOffset, 10.123456789);

                  sourceBuffer.timestampOffset = 20.0;  // No exception should occur.

                  test.done();

});

          }, 'Test setting SourceBuffer.mode and SourceBuffer.timestampOffset while parsing media segment.');

        </script>

    </body>

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