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Issue #1536 - Part 3: Parse content to decide whether it's an init segment.

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Moonchild 2020-05-05 23:04:10 +03:00 • committed by Roy Tam
commit 2d3f069ae8
1 changed files with 8 additions and 18 deletions
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26
dom/media/mediasource/ContainerParser.cpp
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@ -127,28 +127,18 @@ public:
MediaResult IsInitSegmentPresent(MediaByteBuffer* aData) override
{
ContainerParser::IsInitSegmentPresent(aData);
// XXX: This is overly primitive, needs to collect data as it's appended
// to the SB and handle, rather than assuming everything is present in a
// single aData segment.
// 0x1a45dfa3 // EBML
// ...
// DocType == "webm"
// ...
// 0x18538067 // Segment (must be "unknown" size or contain a value large
// enough to include the Segment Information and Tracks
// elements that follow)
// 0x1549a966 // -> Segment Info
// 0x1654ae6b // -> One or more Tracks
// 0x1a45dfa3 // EBML
if (aData->Length() < 4) {
return NS_ERROR_NOT_AVAILABLE;
}
if ((*aData)[0] == 0x1a && (*aData)[1] == 0x45 && (*aData)[2] == 0xdf &&
(*aData)[3] == 0xa3) {
return NS_OK;
WebMBufferedParser parser(0);
nsTArray<WebMTimeDataOffset> mapping;
ReentrantMonitor dummy("dummy");
bool result = parser.Append(aData->Elements(), aData->Length(), mapping,
dummy);
if (!result) {
return MediaResult(NS_ERROR_FAILURE, RESULT_DETAIL("Invalid webm content"));
}
return MediaResult(NS_ERROR_FAILURE, RESULT_DETAIL("Invalid webm content"));
return parser.mInitEndOffset > 0 ? NS_OK : NS_ERROR_NOT_AVAILABLE;
}
MediaResult IsMediaSegmentPresent(MediaByteBuffer* aData) override