зеркало из https://github.com/mozilla/gecko-dev.git
117 строки
3.3 KiB
C++
117 строки
3.3 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et cindent: */
|
|
/* 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_dom_media_CloneableWithRangeMediaResource_h
|
|
#define mozilla_dom_media_CloneableWithRangeMediaResource_h
|
|
|
|
#include "BaseMediaResource.h"
|
|
#include "nsICloneableInputStream.h"
|
|
|
|
namespace mozilla {
|
|
|
|
class CloneableWithRangeMediaResource : public BaseMediaResource
|
|
{
|
|
public:
|
|
CloneableWithRangeMediaResource(MediaResourceCallback* aCallback,
|
|
nsIChannel* aChannel,
|
|
nsIURI* aURI,
|
|
nsIInputStream* aStream,
|
|
uint64_t aSize)
|
|
: BaseMediaResource(aCallback, aChannel, aURI)
|
|
, mStream(do_QueryInterface(aStream))
|
|
, mSize(aSize)
|
|
, mCurrentPosition(0)
|
|
, mInitialized(false)
|
|
{
|
|
MOZ_ASSERT(mStream);
|
|
}
|
|
|
|
~CloneableWithRangeMediaResource()
|
|
{
|
|
}
|
|
|
|
// Main thread
|
|
nsresult Open(nsIStreamListener** aStreamListener) override;
|
|
nsresult Close() override;
|
|
void Suspend(bool aCloseImmediately) override {}
|
|
void Resume() override {}
|
|
already_AddRefed<nsIPrincipal> GetCurrentPrincipal() override;
|
|
nsresult ReadFromCache(char* aBuffer, int64_t aOffset, uint32_t aCount) override;
|
|
|
|
// These methods are called off the main thread.
|
|
|
|
// Other thread
|
|
void SetReadMode(MediaCacheStream::ReadMode aMode) override {}
|
|
void SetPlaybackRate(uint32_t aBytesPerSecond) override {}
|
|
nsresult ReadAt(int64_t aOffset, char* aBuffer,
|
|
uint32_t aCount, uint32_t* aBytes) override;
|
|
// (Probably) file-based, caching recommended.
|
|
bool ShouldCacheReads() override { return true; }
|
|
int64_t Tell() override;
|
|
|
|
// Any thread
|
|
void Pin() override {}
|
|
void Unpin() override {}
|
|
|
|
double GetDownloadRate(bool* aIsReliable) override
|
|
{
|
|
// The data's all already here
|
|
*aIsReliable = true;
|
|
return 100*1024*1024; // arbitray, use 100MB/s
|
|
}
|
|
|
|
int64_t GetLength() override
|
|
{
|
|
MaybeInitialize();
|
|
return mSize;
|
|
}
|
|
|
|
int64_t GetNextCachedData(int64_t aOffset) override
|
|
{
|
|
MaybeInitialize();
|
|
return (aOffset < (int64_t)mSize) ? aOffset : -1;
|
|
}
|
|
|
|
int64_t GetCachedDataEnd(int64_t aOffset) override
|
|
{
|
|
MaybeInitialize();
|
|
return std::max(aOffset, (int64_t)mSize);
|
|
}
|
|
|
|
bool IsDataCachedToEndOfResource(int64_t aOffset) override { return true; }
|
|
bool IsTransportSeekable() override { return true; }
|
|
|
|
nsresult GetCachedRanges(MediaByteRangeSet& aRanges) override;
|
|
|
|
size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override
|
|
{
|
|
return BaseMediaResource::SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override
|
|
{
|
|
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
private:
|
|
void MaybeInitialize();
|
|
|
|
// Input stream for the media data. This can be used from any
|
|
// thread.
|
|
nsCOMPtr<nsICloneableInputStreamWithRange> mStream;
|
|
|
|
// The stream size.
|
|
uint64_t mSize;
|
|
|
|
// The current position.
|
|
uint64_t mCurrentPosition;
|
|
|
|
bool mInitialized;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_dom_media_CloneableWithRangeMediaResource_h
|