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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#if !defined(OggDecoder_h_)
#define OggDecoder_h_
#include "MediaDecoder.h"
namespace mozilla {
class OggDecoder : public MediaDecoder
{
public:
explicit OggDecoder(MediaDecoderOwner* aOwner)
: MediaDecoder(aOwner)
, mShutdownBitMonitor("mShutdownBitMonitor")
, mShutdownBit(false)
{}
MediaDecoder* Clone(MediaDecoderOwner* aOwner) override {
if (!IsOggEnabled()) {
return nullptr;
}
return new OggDecoder(aOwner);
}
MediaDecoderStateMachine* CreateStateMachine() override;
// For yucky legacy reasons, the ogg decoder needs to do a cross-thread read
// to check for shutdown while it hogs its own task queue. We don't want to
// protect the general state with a lock, so we make a special copy and a
// special-purpose lock. This method may be called on any thread.
bool IsOggDecoderShutdown() override
{
MonitorAutoLock lock(mShutdownBitMonitor);
return mShutdownBit;
}
// Returns true if aMIMEType is a type that we think we can render with the
// a platform decoder backend. If aCodecs is non emtpy, it is filled
// with a comma-delimited list of codecs to check support for.
static bool CanHandleMediaType(const nsACString& aMIMETypeExcludingCodecs,
const nsAString& aCodecs);
static bool IsEnabled();
protected:
void ShutdownBitChanged() override
{
MonitorAutoLock lock(mShutdownBitMonitor);
mShutdownBit = mStateMachineIsShutdown;
}
Monitor mShutdownBitMonitor;
bool mShutdownBit;
};
} // namespace mozilla
#endif
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