root/modules/videoio/src/cap_winrt/MediaStreamSink.hpp

INCLUDED FROM

DEFINITIONS

1. _VerifyNotShutdown

// Copyright (c) Microsoft. All rights reserved.
//
// The MIT License (MIT)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files(the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions :
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma once

#include "MFIncludes.hpp"

namespace Media {

class MediaStreamSink WrlSealed :
    public Microsoft::WRL::RuntimeClass<
    Microsoft::WRL::RuntimeClassFlags<Microsoft::WRL::ClassicCom>,
    IMFStreamSink,
    IMFMediaEventGenerator,
    IMFMediaTypeHandler
    >
{
public:

    MediaStreamSink(
        __in const MW::ComPtr<IMFMediaSink>& sink,
        __in DWORD id,
        __in const MW::ComPtr<IMFMediaType>& mt,
        __in MediaSampleHandler^ sampleHandler
    );

    //
    // IMFStreamSink
    //

    IFACEMETHODIMP GetMediaSink(__deref_out IMFMediaSink **sink);
    IFACEMETHODIMP GetIdentifier(__out DWORD *identifier);
    IFACEMETHODIMP GetMediaTypeHandler(__deref_out IMFMediaTypeHandler **handler);
    IFACEMETHODIMP ProcessSample(__in_opt IMFSample *sample);
    IFACEMETHODIMP PlaceMarker(__in MFSTREAMSINK_MARKER_TYPE markerType, __in const PROPVARIANT * markerValue, __in const PROPVARIANT * contextValue);
    IFACEMETHODIMP Flush();

    //
    // IMFMediaEventGenerator
    //

    IFACEMETHODIMP GetEvent(__in DWORD flags, __deref_out IMFMediaEvent **event);
    IFACEMETHODIMP BeginGetEvent(__in IMFAsyncCallback *callback, __in_opt IUnknown *state);
    IFACEMETHODIMP EndGetEvent(__in IMFAsyncResult *result, __deref_out IMFMediaEvent **event);
    IFACEMETHODIMP QueueEvent(__in MediaEventType met, __in REFGUID extendedType, __in HRESULT status, __in_opt const PROPVARIANT *value);

    //
    // IMFMediaTypeHandler
    //

    IFACEMETHODIMP IsMediaTypeSupported(__in IMFMediaType *mediaType, __deref_out_opt  IMFMediaType **closestMediaType);
    IFACEMETHODIMP GetMediaTypeCount(__out DWORD *typeCount);
    IFACEMETHODIMP GetMediaTypeByIndex(__in DWORD index, __deref_out  IMFMediaType **mediaType);
    IFACEMETHODIMP SetCurrentMediaType(__in IMFMediaType *mediaType);
    IFACEMETHODIMP GetCurrentMediaType(__deref_out_opt IMFMediaType **mediaType);
    IFACEMETHODIMP GetMajorType(__out GUID *majorType);

    //
    // Misc
    //

    void InternalSetCurrentMediaType(__in const MW::ComPtr<IMFMediaType>& mediaType);
    void RequestSample();
    void Shutdown();

private:

    bool _IsMediaTypeSupported(__in const MW::ComPtr<IMFMediaType>& mt) const;
    void _UpdateMediaType(__in const MW::ComPtr<IMFMediaType>& mt);

    void _VerifyNotShutdown()
    {
        if (_shutdown)
        {
            CHK(MF_E_SHUTDOWN);
        }
    }

    MW::ComPtr<IMFMediaSink> _sink;
    MW::ComPtr<IMFMediaEventQueue> _eventQueue;
    MW::ComPtr<IMFMediaType> _curMT;

    MediaSampleHandler^ _sampleHandler;

    GUID _majorType;
    GUID _subType;
    unsigned int _width;
    unsigned int _height;
    DWORD _id;
    bool _shutdown;

    MWW::SRWLock _lock;
};