summaryrefslogtreecommitdiffstats
path: root/dom/media/mediasource/ContainerParser.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/media/mediasource/ContainerParser.h')
-rw-r--r--dom/media/mediasource/ContainerParser.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/dom/media/mediasource/ContainerParser.h b/dom/media/mediasource/ContainerParser.h
new file mode 100644
index 000000000..e31ed7579
--- /dev/null
+++ b/dom/media/mediasource/ContainerParser.h
@@ -0,0 +1,90 @@
+/* -*- 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_ */