<!DOCTYPE html>
<html>
    <head>
        <script src="/media-resources/video-test.js"></script>
        <script src="/media/resources/media-source/webm/segment-info.js"></script>
        <script src="media-source.js"></script>
        <script>
            var segmentHelper = new MediaSourceTest.SegmentHelper(WebMSegmentInfo.testWebM);

            function onSourceOpen(event)
            {
                consoleWrite("Test MediaSource object type");
                testExpected("mediaSource", event.target);
                testExpected("mediaSource instanceof window.WebKitMediaSource", true);

                consoleWrite("");
                consoleWrite("Add a SourceBuffer");

                testExpected("mediaSource.sourceBuffers.length", 0);

                mediaSource.sourceBuffers.addEventListener('webkitaddsourcebuffer', onSourceBufferAdded);

                run("segmentHelper.addSourceBuffer()");
            }

            function afterSourceBufferAdded()
            {
                consoleWrite("");
                consoleWrite("Test SourceBuffer object type");
                testExpected("segmentHelper.sourceBuffer instanceof window.WebKitSourceBuffer", true);
                testExpected("mediaSource.sourceBuffers[0] instanceof window.WebKitSourceBuffer", true);

                consoleWrite("");
                consoleWrite("Append init segment");
                testExpected("mediaSource.sourceBuffers[0].buffered.length", 0);
                segmentHelper.appendInitSegment();

                // Append just enough segments to include at least 1 second of media data.
                consoleWrite("");
                consoleWrite("Append 1 second of data.");
                var endIndex = segmentHelper.getMediaSegmentIndexForTimestamp(1);
                for (var i = 0; i <= endIndex; i++)
                    segmentHelper.appendMediaSegment(i);
                testExpected("mediaSource.sourceBuffers[0].buffered.length", 1);
                testExpected("mediaSource.sourceBuffers[0].buffered.start(0)", 0);
                testExpected("mediaSource.sourceBuffers[0].buffered.end(0)", 1, '>');

                consoleWrite("");
                consoleWrite("Set timestampOffset.");
                testExpected("segmentHelper.sourceBuffer.timestampOffset", 0);
                run("segmentHelper.sourceBuffer.timestampOffset = 5");
                testExpected("segmentHelper.sourceBuffer.timestampOffset", 5);

                // Append another 1 second of media data.
                consoleWrite("");
                consoleWrite("Append 1 second of data.");
                var endIndex = segmentHelper.getMediaSegmentIndexForTimestamp(1);
                for (var i = 0; i <= endIndex; i++)
                    segmentHelper.appendMediaSegment(i);
                testExpected("mediaSource.sourceBuffers[0].buffered.length", 2);
                testExpected("mediaSource.sourceBuffers[0].buffered.start(1)", 5);
                testExpected("mediaSource.sourceBuffers[0].buffered.end(1)", 5, '>');

                consoleWrite("");
                consoleWrite("Remove SourceBuffer");

                mediaSource.sourceBuffers.addEventListener('webkitremovesourcebuffer', onSourceBufferRemoved);

                run("mediaSource.removeSourceBuffer(segmentHelper.sourceBuffer)");
            }

            function afterSourceBufferRemoved()
            {
                consoleWrite("Test that addSourceBuffer() throws and error when the MediaSource is not associated with a media element.");
                var mediaSource2 = new WebKitMediaSource();
                video.src = webkitURL.createObjectURL(mediaSource2);
                try {
                    mediaSource.addSourceBuffer('video/webm; codecs="vorbis,vp8"');
                } catch (e) {
                    consoleWrite("Got expected exception " + e);
                }

                consoleWrite("Test that setting timestampOffset throws an error when the MediaSource is not associated with a media element.");
                try {
                    segmentHelper.sourceBuffer.timestampOffset = 10;
                } catch (e) {
                    consoleWrite("Got expected exception " + e);
                }

                endTest();
            }

            function onSourceBufferAdded(event)
            {
                testExpected("mediaSource.sourceBuffers.length", 1);

                consoleWrite("");
                consoleWrite("Test SourceBufferList object type:");
                testExpected("mediaSource.sourceBuffers", event.target);
                testExpected("mediaSource.sourceBuffers instanceof window.WebKitSourceBufferList", true);

                afterSourceBufferAdded();
            }

            function onSourceBufferRemoved(event)
            {
                testExpected("mediaSource.sourceBuffers.length", 0);
                testExpected("mediaSource.sourceBuffers", event.target);

                consoleWrite("");
                consoleWrite("Test that append() throws an error after SourceBuffer has been removed.");
                try {
                    segmentHelper.appendMediaSegment(0);
                } catch (e) {
                    consoleWrite("Got expected exception " + e);
                }

                consoleWrite("Test that buffered throws an error after SourceBuffer has been removed.");
                try {
                    testExpected(segmentHelper.sourceBuffer.buffered, 0);
                } catch (e) {
                    consoleWrite("Got expected exception " + e);
                }
                testExpected("mediaSource.sourceBuffers.length", 0);

                afterSourceBufferRemoved();
            }

            function onLoad()
            {
                findMediaElement();

                mediaSource = new WebKitMediaSource();

                waitForEventAndFail('error');
                waitForEvent('webkitsourceopen', "", false, false, mediaSource);
                waitForEvent('webkitsourceended', "", false, false, mediaSource);

                mediaSource.addEventListener('webkitsourceopen', onSourceOpen);

                segmentHelper.init(video, function(success)
                {
                    if (!success) {
                        failTest("Failed to load segment data");
                        return;
                    }

                    MediaSourceTest.setSrcToMediaSourceTestURL(video);
                });
            }
        </script>
    </head>
    <body onload="onLoad()">
        <video> </video>
        <p>Tests MediaSource, SourceBuffer, and SourceBufferList objects.</p>
    </body>
</html>