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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_CONTAINERPARSER_H_
#define MOZILLA_CONTAINERPARSER_H_
#include "mozilla/RefPtr.h"
#include "nsString.h"
#include "MediaResource.h"
#include "MediaResult.h"
namespace mozilla {
class MediaByteBuffer;
class SourceBufferResource;
class ContainerParser {
public:
explicit ContainerParser(const nsACString& aType);
virtual ~ContainerParser();
// Return true if aData starts with an initialization segment.
// The base implementation exists only for debug logging and is expected
// to be called first from the overriding implementation.
// Return NS_OK if segment is present, NS_ERROR_NOT_AVAILABLE if no sufficient
// data is currently available to make a determination. Any other value
// indicates an error.
virtual MediaResult IsInitSegmentPresent(MediaByteBuffer* aData);
// Return true if aData starts with a media segment.
// The base implementation exists only for debug logging and is expected
// to be called first from the overriding implementation.
// Return NS_OK if segment is present, NS_ERROR_NOT_AVAILABLE if no sufficient
// data is currently available to make a determination. Any other value
// indicates an error.
virtual MediaResult IsMediaSegmentPresent(MediaByteBuffer* aData);
// Parse aData to extract the start and end frame times from the media
// segment. aData may not start on a parser sync boundary. Return NS_OK
// if aStart and aEnd have been updated and NS_ERROR_NOT_AVAILABLE otherwise
// when no error were encountered.
virtual MediaResult ParseStartAndEndTimestamps(MediaByteBuffer* aData,
int64_t& aStart, int64_t& aEnd);
// Compare aLhs and rHs, considering any error that may exist in the
// timestamps from the format's base representation. Return true if aLhs
// == aRhs within the error epsilon.
bool TimestampsFuzzyEqual(int64_t aLhs, int64_t aRhs);
virtual int64_t GetRoundingError();
MediaByteBuffer* InitData();
bool HasInitData()
{
return mHasInitData;
}
// Return true if a complete initialization segment has been passed
// to ParseStartAndEndTimestamps(). The calls below to retrieve
// MediaByteRanges will be valid from when this call first succeeds.
bool HasCompleteInitData();
// Returns the byte range of the first complete init segment, or an empty
// range if not complete.
MediaByteRange InitSegmentRange();
// Returns the byte range of the first complete media segment header,
// or an empty range if not complete.
MediaByteRange MediaHeaderRange();
// Returns the byte range of the first complete media segment or an empty
// range if not complete.
MediaByteRange MediaSegmentRange();
static ContainerParser* CreateForMIMEType(const nsACString& aType);
protected:
RefPtr<MediaByteBuffer> mInitData;
RefPtr<SourceBufferResource> mResource;
bool mHasInitData;
MediaByteRange mCompleteInitSegmentRange;
MediaByteRange mCompleteMediaHeaderRange;
MediaByteRange mCompleteMediaSegmentRange;
const nsCString mType;
};
} // namespace mozilla
#endif /* MOZILLA_CONTAINERPARSER_H_ */
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