gecko-dev/dom/media/mediasource/ResourceQueue.h
Nathan Froyd 01583602a9 Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout.  The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.

CLOSED TREE makes big refactorings like this a piece of cake.

 # The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
    xargs perl -p -i -e '
 s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
 s/nsRefPtr ?</RefPtr</g;   # handle declarations and variables
'

 # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h

 # Handle nsRefPtr.h itself, a couple places that define constructors
 # from nsRefPtr, and code generators specially.  We do this here, rather
 # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
 # things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
     mfbt/nsRefPtr.h \
     xpcom/glue/nsCOMPtr.h \
     xpcom/base/OwningNonNull.h \
     ipc/ipdl/ipdl/lower.py \
     ipc/ipdl/ipdl/builtin.py \
     dom/bindings/Codegen.py \
     python/lldbutils/lldbutils/utils.py

 # In our indiscriminate substitution above, we renamed
 # nsRefPtrGetterAddRefs, the class behind getter_AddRefs.  Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
    xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'

if [ -d .git ]; then
    git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
    hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi

--HG--
rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 01:24:48 -04:00

87 lines
2.7 KiB
C++

/* -*- 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_RESOURCEQUEUE_H_
#define MOZILLA_RESOURCEQUEUE_H_
#include "nsDeque.h"
#include "MediaData.h"
namespace mozilla {
class ErrorResult;
// A SourceBufferResource has a queue containing the data that is appended
// to it. The queue holds instances of ResourceItem which is an array of the
// bytes. Appending data to the SourceBufferResource pushes this onto the
// queue.
// Data is evicted once it reaches a size threshold. This pops the items off
// the front of the queue and deletes it. If an eviction happens then the
// MediaSource is notified (done in SourceBuffer::AppendData) which then
// requests all SourceBuffers to evict data up to approximately the same
// timepoint.
struct ResourceItem {
explicit ResourceItem(MediaByteBuffer* aData);
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
RefPtr<MediaByteBuffer> mData;
};
class ResourceQueue : private nsDeque {
public:
ResourceQueue();
// Returns the logical byte offset of the start of the data.
uint64_t GetOffset();
// Returns the length of all items in the queue plus the offset.
// This is the logical length of the resource.
uint64_t GetLength();
// Copies aCount bytes from aOffset in the queue into aDest.
void CopyData(uint64_t aOffset, uint32_t aCount, char* aDest);
void AppendItem(MediaByteBuffer* aData);
// Tries to evict at least aSizeToEvict from the queue up until
// aOffset. Returns amount evicted.
uint32_t Evict(uint64_t aOffset, uint32_t aSizeToEvict,
ErrorResult& aRv);
uint32_t EvictBefore(uint64_t aOffset, ErrorResult& aRv);
uint32_t EvictAll();
size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const;
#if defined(DEBUG)
void Dump(const char* aPath);
#endif
private:
ResourceItem* ResourceAt(uint32_t aIndex) const;
// Returns the index of the resource that contains the given
// logical offset. aResourceOffset will contain the offset into
// the resource at the given index returned if it is not null. If
// no such resource exists, returns GetSize() and aOffset is
// untouched.
uint32_t GetAtOffset(uint64_t aOffset, uint32_t *aResourceOffset);
ResourceItem* PopFront();
// Logical length of the resource.
uint64_t mLogicalLength;
// Logical offset into the resource of the first element in the queue.
uint64_t mOffset;
};
} // namespace mozilla
#endif /* MOZILLA_RESOURCEQUEUE_H_ */