1 files changed, 97 insertions, 0 deletions
diff --git a/dom/media/mediasource/ContainerParser.h b/dom/media/mediasource/ContainerParser.h
new file mode 100644
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+++ b/dom/media/mediasource/ContainerParser.h
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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 "mozilla/UniquePtr.h"
+#include "MediaSpan.h"
+#include "MediaContainerType.h"
+#include "MediaResource.h"
+#include "MediaResult.h"
+
+namespace mozilla {
+
+class MediaByteBuffer;
+class SourceBufferResource;
+
+DDLoggedTypeDeclName(ContainerParser);
+
+class ContainerParser : public DecoderDoctorLifeLogger<ContainerParser> {
+ public:
+  explicit ContainerParser(const MediaContainerType& 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(const MediaSpan& 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(const MediaSpan& 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(const MediaSpan& aData,
+                                                 media::TimeUnit& aStart,
+                                                 media::TimeUnit& 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 UniquePtr<ContainerParser> CreateForMIMEType(
+      const MediaContainerType& aType);
+
+  const MediaContainerType& ContainerType() const { return mType; }
+
+ protected:
+  RefPtr<MediaByteBuffer> mInitData;
+  RefPtr<SourceBufferResource> mResource;
+  bool mHasInitData;
+  uint64_t mTotalParsed;
+  uint64_t mGlobalOffset;
+  MediaByteRange mCompleteInitSegmentRange;
+  MediaByteRange mCompleteMediaHeaderRange;
+  MediaByteRange mCompleteMediaSegmentRange;
+  const MediaContainerType mType;
+};
+
+}  // namespace mozilla
+
+#endif /* MOZILLA_CONTAINERPARSER_H_ */