зеркало из https://github.com/mozilla/gecko-dev.git
112 строки
3.1 KiB
C++
112 строки
3.1 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_media_CloneableWithRangeMediaResource_h
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#define mozilla_dom_media_CloneableWithRangeMediaResource_h
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#include "BaseMediaResource.h"
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#include "nsICloneableInputStream.h"
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namespace mozilla {
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class CloneableWithRangeMediaResource : public BaseMediaResource
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{
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public:
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CloneableWithRangeMediaResource(MediaResourceCallback* aCallback,
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nsIChannel* aChannel,
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nsIURI* aURI,
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nsIInputStream* aStream,
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uint64_t aSize)
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: BaseMediaResource(aCallback, aChannel, aURI)
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, mStream(do_QueryInterface(aStream))
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, mSize(aSize)
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, mInitialized(false)
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{
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MOZ_ASSERT(mStream);
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}
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~CloneableWithRangeMediaResource()
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{
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}
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// Main thread
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nsresult Open(nsIStreamListener** aStreamListener) override;
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nsresult Close() override;
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void Suspend(bool aCloseImmediately) override {}
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void Resume() override {}
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already_AddRefed<nsIPrincipal> GetCurrentPrincipal() override;
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nsresult ReadFromCache(char* aBuffer, int64_t aOffset, uint32_t aCount) override;
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// These methods are called off the main thread.
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// Other thread
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void SetReadMode(MediaCacheStream::ReadMode aMode) override {}
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void SetPlaybackRate(uint32_t aBytesPerSecond) override {}
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nsresult ReadAt(int64_t aOffset, char* aBuffer,
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uint32_t aCount, uint32_t* aBytes) override;
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// (Probably) file-based, caching recommended.
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bool ShouldCacheReads() override { return true; }
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// Any thread
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void Pin() override {}
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void Unpin() override {}
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double GetDownloadRate(bool* aIsReliable) override
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{
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// The data's all already here
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*aIsReliable = true;
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return 100*1024*1024; // arbitray, use 100MB/s
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}
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int64_t GetLength() override
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{
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MaybeInitialize();
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return mSize;
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}
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int64_t GetNextCachedData(int64_t aOffset) override
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{
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MaybeInitialize();
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return (aOffset < (int64_t)mSize) ? aOffset : -1;
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}
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int64_t GetCachedDataEnd(int64_t aOffset) override
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{
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MaybeInitialize();
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return std::max(aOffset, (int64_t)mSize);
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}
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bool IsDataCachedToEndOfResource(int64_t aOffset) override { return true; }
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bool IsTransportSeekable() override { return true; }
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nsresult GetCachedRanges(MediaByteRangeSet& aRanges) override;
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size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override
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{
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return BaseMediaResource::SizeOfExcludingThis(aMallocSizeOf);
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}
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size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override
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{
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return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
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}
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private:
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void MaybeInitialize();
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// Input stream for the media data. This can be used from any
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// thread.
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nsCOMPtr<nsICloneableInputStreamWithRange> mStream;
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// The stream size.
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uint64_t mSize;
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bool mInitialized;
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};
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} // namespace mozilla
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#endif // mozilla_dom_media_CloneableWithRangeMediaResource_h
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