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/* 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 */
#ifndef mozilla_dom_media_CloneableWithRangeMediaResource_h
#define mozilla_dom_media_CloneableWithRangeMediaResource_h
#include "BaseMediaResource.h"
#include "nsICloneableInputStream.h"
namespace mozilla {
class CloneableWithRangeMediaResource : public BaseMediaResource {
CloneableWithRangeMediaResource(MediaResourceCallback* aCallback,
nsIChannel* aChannel, nsIURI* aURI,
nsIInputStream* aStream, uint64_t aSize)
: BaseMediaResource(aCallback, aChannel, aURI),
mInitialized(false) {
~CloneableWithRangeMediaResource() = default;
// Main thread
nsresult Open(nsIStreamListener** aStreamListener) override;
RefPtr<GenericPromise> Close() override;
void Suspend(bool aCloseImmediately) override {}
void Resume() override {}
already_AddRefed<nsIPrincipal> GetCurrentPrincipal() override;
bool HadCrossOriginRedirects() 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; }
// 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 {
return mSize;
int64_t GetNextCachedData(int64_t aOffset) override {
return (aOffset < (int64_t)mSize) ? aOffset : -1;
int64_t GetCachedDataEnd(int64_t aOffset) override {
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);
void MaybeInitialize();
// Input stream for the media data. This can be used from any
// thread.
nsCOMPtr<nsICloneableInputStreamWithRange> mStream;
// The stream size.
uint64_t mSize;
bool mInitialized;
} // namespace mozilla
#endif // mozilla_dom_media_CloneableWithRangeMediaResource_h