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/* 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 DOM_MEDIA_PLATFORM_WMF_MFMEDIAENGINENOTIFY_H
#define DOM_MEDIA_PLATFORM_WMF_MFMEDIAENGINENOTIFY_H
#include <wrl.h>
#include "MediaEventSource.h"
#include "MFMediaEngineExtra.h"
#include "mozilla/Maybe.h"
namespace mozilla {
const char* MediaEngineEventToStr(MF_MEDIA_ENGINE_EVENT aEvent);
// https://docs.microsoft.com/en-us/windows/win32/api/mfmediaengine/ne-mfmediaengine-mf_media_engine_event
struct MFMediaEngineEventWrapper final {
explicit MFMediaEngineEventWrapper(MF_MEDIA_ENGINE_EVENT aEvent)
: mEvent(aEvent) {}
MF_MEDIA_ENGINE_EVENT mEvent;
Maybe<DWORD_PTR> mParam1;
Maybe<DWORD> mParam2;
};
/**
* MFMediaEngineNotify is used to handle the event sent from the media engine.
* https://docs.microsoft.com/en-us/windows/win32/api/mfmediaengine/nn-mfmediaengine-imfmediaenginenotify
*/
class MFMediaEngineNotify final
: public Microsoft::WRL::RuntimeClass<
Microsoft::WRL::RuntimeClassFlags<
Microsoft::WRL::RuntimeClassType::ClassicCom>,
IMFMediaEngineNotify> {
public:
MFMediaEngineNotify() = default;
HRESULT RuntimeClassInitialize() { return S_OK; }
// Method for IMFMediaEngineNotify
IFACEMETHODIMP EventNotify(DWORD aEvent, DWORD_PTR aParam1,
DWORD aParam2) override;
MediaEventSource<MFMediaEngineEventWrapper>& MediaEngineEvent() {
return mEngineEvents;
}
private:
MediaEventProducer<MFMediaEngineEventWrapper> mEngineEvents;
};
} // namespace mozilla
#endif // DOM_MEDIA_PLATFORM_WMF_MFMEDIAENGINENOTIFY_H
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